CN114406613B - Laminated egg-shaped pressure-resistant shell and processing method thereof - Google Patents
Laminated egg-shaped pressure-resistant shell and processing method thereof Download PDFInfo
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- B—PERFORMING OPERATIONS; TRANSPORTING
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Abstract
The invention discloses a laminated egg-shaped pressure-resistant shell and a processing method thereof, wherein the laminated egg-shaped pressure-resistant shell comprises an inner layer pressure-resistant shell and an outer layer pressure-resistant shell, one end of the inner layer pressure-resistant shell and one end of the outer layer pressure-resistant shell are respectively fixedly connected with a small-end sealing head, the other end of the inner layer pressure-resistant shell and the other end of the outer layer pressure-resistant shell are respectively fixedly connected with a large-end sealing head, a plurality of supports are connected between the inner layer pressure-resistant shell and the outer layer pressure-resistant shell, and composite materials are filled between the inner layer pressure-resistant shell and the outer layer pressure-resistant shell. The laminated egg-shaped pressure-resistant shell structure is adopted, the composite material is filled between the two layers, the comprehensive performance of the laminated egg-shaped pressure-resistant shell structure is optimally coordinated, the overall quality of the pressure-resistant shell is greatly reduced on the premise of ensuring the strength and the safety performance, the functions of heat insulation and noise reduction are achieved, the working environment is improved, the composite material layer between the two layers of metal shells is well protected, the composite material is prevented from being sheared and damaged under the action of external force, and the safety is ensured; by adopting the dieless internal pressure forming, the mechanical property distribution of the shell is more uniform, the initial geometric defect is obviously reduced, and the yield strength and the pressure resistance of the material are improved.
Description
Technical Field
The invention relates to a pressure-resistant shell and a processing method thereof, in particular to a laminated egg-shaped pressure-resistant shell and a processing method thereof.
Background
Ocean engineering equipment is an important support for human development, utilization and ocean protection, and is also an important component of strategic emerging industries and high-end equipment manufacturing industries in China. The submersible is an important device for ocean exploration and deep sea research, and plays a role in lifting the weight. The pressure shell is an important part of the submersible, and can ensure that internal equipment is not damaged and the safety of workers in the diving process of the submersible. The patent number is ZL2015100738034, the invention patent of a deep sea bionic pressure-resistant shell provides a conceptual egg-shaped bionic pressure-resistant shell, and indicates that the egg-shaped bionic shell can comprehensively coordinate functions such as strength, stability, space utilization rate, streamline and the like, is an excellent bionic prototype, but does not relate to a processing method of the egg-shaped pressure-resistant shell. The patent number is ZL2016100382274, and the egg-shaped pressure-resistant shell manufacturing device and the egg-shaped pressure-resistant shell manufacturing method are introduced, but the egg-shaped pressure-resistant shell manufacturing device and the egg-shaped pressure-resistant shell manufacturing method are not related to the egg-shaped pressure-resistant shell made of various materials.
As an excellent novel deep sea pressure-resistant device, the egg-shaped pressure-resistant shell has a wide engineering application prospect, but because the material is single and the multi-curvature positive Gaussian structure is difficult to manufacture, the following four problems exist in the final conclusion:
1. the traditional egg-shaped pressure-resistant shell is of a single-layer structure, the material design needs to meet the mechanical and use requirements at the same time, the design difficulty is high, the mechanical property of the material is not fully utilized, the internal stress cannot be effectively released during working, the bearing capacity is reduced, and the safety performance is not high due to the fact that the laminated egg-shaped pressure-resistant shell is not provided. Meanwhile, due to the single-layer structure, the heat insulation and noise reduction effects cannot be well achieved, and the working environment is not superior enough.
2. According to the existing manufacturing technology, the egg-shaped pressure-resistant shell is manufactured by adopting the traditional die forming method, and a large-tonnage large-scale forming press, a large-scale forming die and a spatial curved surface are required to be welded, so that the processing cost is high, the difficulty is high, the period is long, and the residual stress and the deformation resilience are large.
3. The egg-shaped pressure-resistant shell is manufactured by adopting the traditional die forming, the initial geometric defects caused by processing and manufacturing are large, and the yield strength of the material cannot be improved.
4. The medium-thickness shell has no die bulging, double-sided welding is needed, and welding seam cracking and local pinhole leakage are easy to occur during bulging, so that the processing quality is low and the difficulty is high.
Disclosure of Invention
The purpose of the invention is as follows: the invention aims to provide a laminated egg-shaped pressure-resistant shell which is simple and reliable in structure and convenient to manufacture and a processing method thereof.
The technical scheme is as follows: the invention comprises an inner pressure-resistant shell and an outer pressure-resistant shell, wherein one end of the inner pressure-resistant shell and one end of the outer pressure-resistant shell are respectively fixedly connected with a small-end sealing head, the other end of the inner pressure-resistant shell and the other end of the outer pressure-resistant shell are respectively fixedly connected with a large-end sealing head, a plurality of supports are connected between the inner pressure-resistant shell and the outer pressure-resistant shell, and a composite material is filled between the inner pressure-resistant shell and the outer pressure-resistant shell.
The small end sealing head is provided with a first exhaust port and a second exhaust port.
The first exhaust port is communicated with the inner cavity of the inner pressure-resistant shell, and the second exhaust port is communicated with the cavity between the inner shell and the outer shell.
The big end sealing head is provided with a water inlet and a water outlet and a composite material injection port.
The water inlet and outlet are communicated with the inner cavity of the inner pressure-resistant shell, and the composite material injection opening is communicated with the cavity between the inner shell and the outer shell.
The composite material adopts resin and nano composite material.
The inner-layer pressure-resistant shell adopts an inner-layer egg-shaped pressure-resistant shell, and the outer-layer pressure-resistant shell adopts an outer-layer egg-shaped pressure-resistant shell.
A processing method of a laminated egg-shaped pressure-resistant shell comprises the following steps:
(1) Determining the bus equation of the inner shell and the outer shell of the laminated egg-shaped pressure-resistant shell;
(2) Determining the expansion equation of the shell sheet bodies in the laminated egg-shaped prefabricated body;
(3) Scribing, cutting and blanking according to an expansion equation;
(4) Bending the sheet bodies in the laminated egg-shaped prefabricated body and the shell;
(5) Assembling and spot-welding the bent inner shell bodies;
(6) Respectively welding the small end sealing head and the large end sealing head with the assembled spot-welded inner-layer prefabricated body;
(7) Welding supports on two adjacent sheet bodies of the inner-layer prefabricated body;
(8) Attaching the single sheet body of the outer-layer prefabricated body to the support, ensuring that the position of the single sheet body of the outer-layer prefabricated body corresponds to the corresponding sheet body of the inner-layer prefabricated body one by one, and finally finishing the manufacturing of the laminated egg-shaped prefabricated body;
(9) Injecting water into the inner-layer prefabricated body of the laminated egg-shaped prefabricated body, pressurizing and expanding;
(10) Injecting a composite material between the inner and outer layer preforms of the laminated egg-shaped preform;
(11) And heating the water in the inner egg-shaped pressure shell until the composite material between the interlayers is completely cured, and completely discharging the water in the inner egg-shaped pressure shell.
And (3) dividing the inner and outer egg-shaped preforms into a plurality of pieces respectively before determining the expansion equations of the inner and outer shell sheets of the laminated egg-shaped preform in the step (2).
The unfolding equation of the shell sheets in the laminated egg-shaped prefabricated body in the step (2) is determined in the following way: 1) Firstly, the arc length of the inner and outer shell buses is expressed according to an arc length formula, namely, the expression of the outer shell arc length S1 is as follows:
in the formula (f) 1 (x) The arc length S of the inner shell is the profile equation of the outer shell 2 The expression is as follows:
in the formula (f) 2 (x) An inner shell profile equation;
2) Determining the height of the equation of the development of the inner and outer shells, i.e. the height h of the development of the shell 1 Comprises the following steps:
h 1 ＝f 1 (x)sinθ
unfolding height h of inner shell body 2 Comprises the following steps:
h 2 ＝f 2 (x)sinθ
wherein theta is half of an included angle formed between each sheet body of the shell;
3) Obtaining a complete expression of the inner shell and the outer shell, namely an expansion equation of the outer shell is as follows:
in the formula, S 1 Is arc length of shell generatrix，f 1 (x) In the form of an equation for the profile of the shell,
the inner shell expansion equation is:
in the formula, S 2 Is the arc length of the generatrix of the inner shell, f 2 (x) Is an inner shell profile equation.
Has the advantages that:
(1) The laminated egg-shaped pressure-resistant shell structure is adopted, the composite material is filled between the two layers, the comprehensive performance of the laminated egg-shaped pressure-resistant shell structure is optimally coordinated, the overall quality of the pressure-resistant shell is greatly reduced on the premise of ensuring the strength and the safety performance, the functions of heat insulation and noise reduction are achieved, the working environment is improved, the composite material layer between the two layers of metal shells is well protected, the composite material is prevented from being sheared and damaged under the action of external force, and the safety is ensured;
(2) Compared with the traditional die forming and welding assembly, the large-tonnage large-scale forming press, the large-scale forming die and the space curved surface welding are not needed, so the processing cost is low, the difficulty is low, the period is short, and the residual stress and the deformation resilience are small;
(3) By adopting a manufacturing process of forming without mould internal pressure and more uniform expansion of the mechanical property distribution of the shell, the initial geometric defects are obviously reduced, the yield strength of the material is improved, and the pressure resistance is further improved;
(4) The medium-thickness shell is replaced by the medium-thickness shell without die bulging, double-side welding is not needed, bulging weld joint cracking and local pinhole leakage are avoided, and therefore machining quality is high and machining difficulty is low.
Drawings
FIG. 1 is a schematic diagram of a laminated egg-shaped pressure housing according to the present invention;
FIG. 2 is a cross-sectional view of FIG. 1;
FIG. 3 is a schematic view of a small end seal structure of a laminated egg-shaped pressure shell;
FIG. 4 is a schematic view of a large-end sealing structure of a laminated egg-shaped pressure housing;
FIG. 5 is a schematic diagram of the bus equation of the inner shell of the laminated egg-shaped pressure housing;
FIG. 6 is a schematic diagram of the bus equation of the laminated egg-shaped pressure shell housing;
FIG. 7 is a schematic diagram of the expansion equation of a single plate of the inner shell of the laminated egg-shaped pressure shell;
FIG. 8 is a schematic diagram of the expansion equation of the single sheet of the laminated egg-shaped pressure shell case;
FIG. 9 is a schematic diagram of laser cutting of inner and outer shell pieces of a laminated egg-shaped pressure shell, wherein FIG. 9 (a) is a schematic diagram of laser cutting of inner shell pieces of a laminated egg-shaped pressure shell, and FIG. 9 (b) is a schematic diagram of laser cutting of outer shell pieces of a laminated egg-shaped pressure shell;
FIG. 10 is a schematic view of the bending of the inner and outer shells of the laminated egg-shaped pressure housing;
FIG. 11 is a schematic view of assembly welding of inner layer preforms of a laminated egg-shaped pressure shell;
FIG. 12 is a schematic view of a structure of a flat plate welded at two ends of a sealing head;
FIG. 13 is a schematic view showing the completion of the support welding of the inner and outer preforms of the laminated egg-shaped pressure hull;
FIG. 14 is a schematic view of the overall welded structure of the laminated egg-shaped pressure housing;
FIG. 15 is a schematic diagram illustrating the inner shell bulging process of the laminated egg-shaped pressure housing;
FIG. 16 is a schematic diagram of the bulging process of the laminated egg-shaped pressure housing shells;
FIG. 17 is a schematic diagram of a laminated egg-shaped pressure housing;
FIG. 18 is a flow chart of the present invention.
Detailed Description
The invention will be further explained with reference to the drawings.
As shown in fig. 1 and 2, the present invention comprises a small end seal head 1, an inner egg-shaped pressure housing 2, an outer egg-shaped pressure housing 3 and a large end seal head 5, wherein one end of the inner egg-shaped pressure housing 2 and one end of the outer egg-shaped pressure housing 3 are respectively welded with the small end seal head 1, and the other end of the inner egg-shaped pressure housing 2 and the other end of the outer egg-shaped pressure housing 3 are respectively welded with the large end seal head 5, wherein the small end seal head 1 and the large end seal head 5 both adopt a flat plate structure. A plurality of supports 4 are connected between the inner egg-shaped pressure shell 2 and the outer egg-shaped pressure shell 3, the thickness of the whole laminated egg-shaped pressure shell is t, and resin and nano composite material 6 is filled between the inner egg-shaped pressure shell 2 and the outer egg-shaped pressure shell 3 for improving the pressure resistance.
As shown in fig. 3, the small-end sealing head 1 is provided with a first exhaust port 11 and a second exhaust port 12, wherein the first exhaust port 11 is arranged at the center of the small-end sealing head 1 and is communicated with the inner cavity of the inner egg-shaped pressure-resistant shell 2, and the second exhaust port 12 is arranged between the two pressure-resistant shells, so that the air between the shells can be conveniently exhausted while the composite material is injected.
As shown in fig. 4, the large-end cap 5 is provided with a water inlet and outlet 51 and a composite material inlet 52, wherein the water inlet and outlet 51 is communicated with the inner cavity of the inner egg-shaped pressure shell 2, and the composite material inlet 52 is arranged between the two pressure shells, so as to facilitate the injection of the composite material.
The laminated egg-shaped pressure-resistant shell structure is adopted, the composite material is filled between the two layers, the comprehensive performance of the laminated egg-shaped pressure-resistant shell structure is optimally coordinated, the overall quality of the pressure-resistant shell is greatly reduced on the premise of ensuring the strength and the safety performance, the effects of heat insulation and noise reduction are achieved, and the working environment is improved. Meanwhile, the two layers of metal shells can well protect the composite material layer between the two layers of metal shells, prevent the composite material from being sheared and damaged under the action of external force, and ensure the safety.
The processing method of the laminated egg-shaped pressure shell, as shown in FIG. 18, comprises the following steps:
the first step is as follows: and determining the bus equations of the inner shell and the outer shell of the laminated egg-shaped pressure shell, wherein schematic diagrams of the bus equations of the inner shell and the outer shell are shown in figures 5 and 6. Firstly, the egg-shaped preform is designed in a long and short axis mode, the long axis of the inner egg-shaped preform P2 is determined to be L, the short axis is determined to be B, the long axis of the outer egg-shaped preform P3 is determined to be L, and the short axis is determined to be B. The egg-shaped prefabricated body is designed by adopting an N-R equation, and the shell bus equation is shown as the formula (1):
in the formula, f 1 (x) Is a shell profile equation, L is the long axis of the outer egg-shaped pressure shell, B is the short axis of the outer egg-shaped pressure shell, a 1 And b 1 The equivalent replacement is shown in the formula (1), and SI is the egg-shaped coefficient of the outer egg-shaped pressure shell.
The inner shell bus equation is shown in equation (2):
in the formula (f) 2 (x) Is the inner shell profile equation, i is the major axis of the inner egg-shaped pressure shell, b is the minor axis of the inner egg-shaped pressure shell, a 2 And b 2 Is an equivalent substitution in formula (2).
Wherein the major and minor axes of the inner and outer egg-shaped preforms have the following relationship, as shown in formula (3):
in the formula (2), the equation of the inner layer bus can be obtained as shown in the formula (4):
in the formula (f) 2 (x) Is an inner shell profile equation, L is the long axis of the outer egg-shaped pressure shell, B is the short axis of the outer egg-shaped pressure shell, a 1 And b 1 Equivalent substitution in the formula (2) is performed, and t is the thickness of the laminated egg-shaped pressure-resistant shell.
The second step: and determining the expansion equation of the shell sheets in the laminated egg-shaped prefabricated body. The egg-shaped prefabricated bodies on the inner layer and the outer layer are divided into 8 pieces, namely the cross sections of the egg-shaped prefabricated bodies are regular octagons. The schematic diagrams of the expansion equations of the inner and outer shell sheets are shown in fig. 7 and 8. Firstly, the arc length of the generatrix of the inner shell and the outer shell is expressed according to an arc length formula, namely the arc length S of the outer shell 1 The expression is shown in formula (5):
in the formula (f) 1 (x) Is the shell profile equation, a 1 And b 1 Are equivalent alternatives in formula (1).
Arc length S of inner shell 2 The expression is shown in formula (6):
in the formula (f) 2 (x) Is an inner shell profile equation, a 2 And b 2 Is an equivalent substitution in equation (2).
Determining the height of the equation of the development of the inner and outer shells, i.e. the height h of the development of the shell 1 As shown in formula (7):
h 1 ＝f 1 (x)sinθ (7)
wherein θ is half of the angle formed between each sheet of the housing, and because there are 8 sheets in total, the angle is equal to
Unfolding height h of inner shell body 2 As shown in formula (8):
h 2 ＝f 2 (x)sinθ,
finally, a complete expression of the inner and outer shells can be obtained, namely, the outer shell expansion equation is shown as formula (9):
in the formula, S 1 Is the arc length of the generatrix of the housing, f 1 (x) Is the shell profile equation, a 1 And b 1 The equivalent replacement is shown in the formula (1), and theta is half of an included angle formed between each sheet body of the shell.
The inner shell expansion equation is shown in equation (10):
in the formula, S 2 Is the arc length of the generatrix of the inner shell, f 2 (x) Is an inner shell profile equation, a 2 And b 2 The equivalent substitution in the formula (2) is that theta is half of an included angle formed between each sheet body of the shell.
The third step: the blanking is scribed, cut according to the expansion equation, as shown in fig. 9 (a) and (b). According to the expansion equation, a rectangular plate is scribed, and then the two expanded sheet bodies are cut into 8 pieces respectively through laser cutting.
The fourth step: the individual pieces of the shell and the laminated egg-shaped preform are bent as shown in fig. 10. And bending the cut inner shell sheet body and the cut outer shell sheet body by using a manual plate bending machine.
The fifth step: and assembling and welding the inner layer prefabricated body, and assembling and spot-welding the bent inner shell bodies as shown in figure 11.
And a sixth step: and assembling and welding the end socket flat plates at two ends as shown in figure 12. And welding the small end head 1, the large end head 5 and the assembled spot-welded inner-layer prefabricated body together to form a welding seam 7. The advantage of welding the end socket flat plates at the two ends firstly is that the processing precision can be fully ensured, and the error caused by processing and manufacturing is reduced.
The seventh step: the backing weld between the inner and outer layers is shown in fig. 13. In order to ensure the rigidity between the inner layer prefabricated body and the outer layer prefabricated body, the inner layer prefabricated body and the outer layer prefabricated body need to be connected by a support. Therefore, after the inner-layer prefabricated body is assembled and welded, rigid supports need to be welded on two adjacent sheet bodies of the inner-layer prefabricated body, and meanwhile, due to the existence of the supports 4, the better welding of the sheet bodies of the outer-layer prefabricated body can be realized, and the size precision between the two layers can be ensured.
Eighth step: and assembling and welding the outer layer prefabricated bodies as shown in fig. 14. And (3) laminating the single sheet body of the outer-layer prefabricated body on the support, ensuring that the position of the single sheet body of the outer-layer prefabricated body corresponds to the corresponding sheet body of the inner-layer prefabricated body one by one, welding the single sheet body of the inner-layer prefabricated body, and repeating the operation for 8 times to complete the assembly welding of the outer-layer prefabricated body. Thus, the manufacture of the laminated egg-shaped preform is completed.
The ninth step: the inner layer is inflated by water and expanded by pressure, as shown in figure 15. And (4) connecting the laminated egg-shaped preform welded in the step eight with a water pump through a water inlet 51 and a water outlet 51, and continuously injecting water. After the device is fixedly installed, the inner-layer prefabricated body slowly expands under the action of the internal pressure of water, water injection is stopped after a certain pressure value is reached, and the inner-layer prefabricated body expands into the inner-layer egg-shaped pressure-resistant shell under the action of the internal pressure of water. However, the inner egg-shaped pressure shell cannot be drained after being formed, and the outer egg-shaped pressure shell cannot be drained after being formed and the composite material between the interlayers is cured.
The tenth step: the inner layer pressure maintaining and the sandwich injection composite material pressure bulging are shown in figure 16. The laminated egg-shaped preform after completion of the ninth step is connected to a pump by a composite injection pipe through a composite injection port 52 and continuously injected with the resin and the nanocomposite 6. Similarly, after the device is fixedly installed, the outer-layer prefabricated body slowly expands under the action of the internal pressure of the composite material, and the composite material is stopped injecting after a certain pressure value is reached, so that the outer-layer prefabricated body also expands into an outer egg-shaped pressure shell under the action of the internal pressure of the composite material. The composite material is liquid filler, is not injected into the inner egg-shaped pressure shell, and is only injected into the interlayer between the inner layer and the outer layer.
The eleventh step: after the composite material in the interlayer is cured and formed, the pressure of the inner layer is relieved and water is drained, as shown in figure 17. And heating the water in the inner egg-shaped pressure-resistant shell until the composite material between the interlayers is completely cured. The water in the inner egg-shaped pressure shell is completely discharged through the water inlet and outlet 51.
Finally, the processing of the laminated egg-shaped pressure shell is finished. Compared with the traditional die forming and welding assembly, the method does not need a large-tonnage large forming press, a large-size forming die and space curved surface welding, so that the processing cost is low, the difficulty is low, the period is short, and the residual stress and the deformation rebound are small. By adopting the manufacturing process of forming without mould internal pressure and more uniform expansion of the mechanical property distribution of the shell, the initial geometric defects are obviously reduced, the yield strength of the material is improved, and the pressure resistance is further improved. Meanwhile, the medium-thickness shell is replaced by the medium-thickness shell without die bulging, double-side welding is not needed, bulging weld joint cracking and local pinhole leakage are avoided, and therefore machining quality is high and machining difficulty is low.
Claims (9)
1. The processing method of the laminated egg-shaped pressure-resistant shell is characterized by firstly constructing the laminated egg-shaped pressure-resistant shell which comprises an inner layer pressure-resistant shell and an outer layer pressure-resistant shell, wherein one ends of the inner layer pressure-resistant shell and the outer layer pressure-resistant shell are respectively and fixedly connected with a small end seal (1), the other ends of the inner layer pressure-resistant shell and the outer layer pressure-resistant shell are respectively and fixedly connected with a large end seal (5), a plurality of supports (4) are connected between the inner layer pressure-resistant shell and the outer layer pressure-resistant shell, and a composite material is filled between the inner layer pressure-resistant shell and the outer layer pressure-resistant shell, and specifically comprises the following steps:
(1) Determining the bus equation of the inner shell and the outer shell of the laminated egg-shaped pressure-resistant shell;
(2) Determining the expansion equation of the shell sheet bodies in the laminated egg-shaped prefabricated body;
(3) Scribing, cutting and blanking according to an expansion equation;
(4) Bending the sheet bodies in the laminated egg-shaped prefabricated body and the shell;
(5) Assembling and spot-welding the bent inner shell bodies;
(6) Respectively welding the small end sealing head and the large end sealing head with the assembled spot-welded inner-layer prefabricated body;
(7) Welding supports on two adjacent sheet bodies of the inner-layer prefabricated body;
(8) Attaching the single sheet body of the outer-layer prefabricated body to the support, ensuring that the position of the single sheet body of the outer-layer prefabricated body corresponds to the corresponding sheet body of the inner-layer prefabricated body one by one, and finally finishing the manufacturing of the laminated egg-shaped prefabricated body;
(9) Continuously injecting water into the inner-layer preform of the laminated egg-shaped preform for pressurization and bulging: the inner-layer prefabricated body slowly expands under the action of the internal pressure of water, water injection is stopped after a certain pressure value is reached, and the inner-layer prefabricated body expands into an inner-layer egg-shaped pressure-resistant shell under the action of the internal pressure of the water;
(10) Inner layer pressure maintaining and composite material injection between the inner and outer layer prefabricated bodies of the laminated egg-shaped prefabricated body: the outer-layer prefabricated body expands under the action of the internal pressure of the composite material, the composite material is stopped being injected after a certain pressure value is reached, and the outer-layer prefabricated body expands into an outer egg-shaped pressure-resistant shell under the action of the internal pressure of the composite material;
(11) And heating the water in the inner egg-shaped pressure shell until the composite material between the interlayers is completely cured, and completely discharging the water in the inner egg-shaped pressure shell.
2. The method of manufacturing a laminated pressure hull according to claim 1, wherein the small end closure (1) has a first exhaust port (11) and a second exhaust port (12).
3. The method of claim 2, wherein the first exhaust port (11) is in communication with the inner chamber of the inner pressure shell, and the second exhaust port (12) is in communication with the cavity between the inner and outer shells.
4. The method for manufacturing a laminated pressure-resistant housing as claimed in claim 1, wherein the large-end closure head (5) is provided with a water inlet/outlet (51) and a composite material inlet (52).
5. The method of fabricating a laminated pressure hull according to claim 4, wherein the inlet/outlet (51) is connected to the inner cavity of the inner pressure hull, and the inlet (52) is connected to the cavity between the inner and outer hulls.
6. The method of claim 1, wherein said composite material is a resin plus nanocomposite (6).
7. The method of claim 1, wherein the inner pressure hull is an inner egg-shaped pressure hull (2) and the outer pressure hull is an outer egg-shaped pressure hull (3).
8. The method as claimed in claim 1, wherein the step (2) of dividing the inner and outer egg-shaped preforms into a plurality of pieces before determining the equations for the development of the shell pieces.
9. The method for manufacturing a laminated egg-shaped pressure shell according to claim 1 or 8, wherein the unfolding equation of the shell sheets in the laminated egg-shaped preform in step (2) is determined by:
1) Firstly, the arc length of the generatrix of the inner shell and the outer shell is expressed according to an arc length formula, namely the arc length S of the outer shell 1 The expression is as follows:
in the formula (f) 1 (x) In the form of an equation for the profile of the shell,
arc length S of inner shell 2 The expression is as follows:
in the formula (f) 2 (x) An inner shell profile equation;
2) Determining the height of the equation of the development of the inner and outer shells, i.e. the height h of the development of the shell 1 Comprises the following steps:
h 1 ＝f 1 (x)sinθ
unfolding height h of inner shell body 2 Comprises the following steps:
h 2 ＝f 2 (x)sinθ
wherein theta is half of an included angle formed between each sheet body of the shell;
3) Obtaining a complete expression of the inner shell and the outer shell, namely an expansion equation of the outer shell is as follows:
in the formula, S 1 Is the arc length of the generatrix of the housing, f 1 (x) In the form of an equation for the profile of the shell,
the inner shell expansion equation is:
in the formula, S 2 Is the arc length of the generatrix of the inner shell, f 2 (x) Is an inner shell profile equation.
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| PCT/CN2022/077491 WO2023137822A1 (en) | 2022-01-21 | 2022-02-23 | Laminated egg-shaped pressure shell and method for processing same |
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| CN114852247B (en) * | 2022-05-23 | 2023-05-26 | 江苏科技大学 | Corrugated cylindrical pressure-resistant shell and forming device and method thereof |
| CN115195934B (en) * | 2022-06-27 | 2023-08-22 | 江苏科技大学 | Ribbed corrugated egg-shaped pressure-resistant shell and processing method thereof |
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|---|---|---|---|---|
| CN1026470C (en) * | 1991-04-10 | 1994-11-09 | 哈尔滨工业大学 | Double-layer spherical container integral expansion making method |
| RU2115583C1 (en) * | 1996-01-31 | 1998-07-20 | Товарищество с ограниченной ответственностью "КОРА" | Cargo submarine |
| WO2009119421A1 (en) * | 2008-03-28 | 2009-10-01 | 独立行政法人海洋研究開発機構 | Pressure container, and buoyant body and exploring device which are provided with the same |
| CN102268544B (en) * | 2011-07-05 | 2012-12-26 | 四川蓝星机械有限公司 | Preparation method of leaching pellet |
| CN104648638B (en) * | 2015-02-11 | 2016-11-02 | 江苏科技大学 | The bionical pressure hull in a kind of deep-sea |
| CN105947153A (en) * | 2016-05-10 | 2016-09-21 | 中国科学院力学研究所 | Layered pressure regulating submersible and manufacturing method thereof |
| CN111009232A (en) * | 2019-12-13 | 2020-04-14 | 中国舰船研究设计中心 | Sound stealth covering layer and application thereof |
| CN111301605B (en) * | 2020-02-28 | 2022-04-15 | 江苏科技大学 | Large-depth submersible vehicle, pressure-resistant shell for large-depth submersible vehicle and assembling method of pressure-resistant shell |
-
2022
- 2022-01-21 CN CN202210071068.3A patent/CN114406613B/en active Active
- 2022-02-23 WO PCT/CN2022/077491 patent/WO2023137822A1/en unknown
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| WO2023137822A1 (en) | 2023-07-27 |
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