Embedded anti-leakage V-type pressure vessel head, pressure vessel and manufacturing method

Abstract

The present invention provides an embedded anti-leakage V-type pressure vessel head, a pressure vessel and a manufacturing method, which belong to the technical field of composite material molding. An alternating structure is formed by three groups of metal components and fiber-resin composite material layers, and the fiber-resin composite material layers are interspersed therein, which significantly improves the bonding strength between the metal valve seat and the fiber-resin composite material layer in the V-type composite material pressure vessel. In addition, this structure can extend the gas leakage path and effectively block gas leakage.

Description

Technical Field

[0001] The invention belongs to the technical field of composite material molding, and specifically discloses an embedded anti-leakage V-shaped pressure vessel head, a pressure vessel and a manufacturing method. Background Art

[0002] The development of pressure vessels has gone through five stages: all-metal pressure vessels (Type I), pressure vessels with a metal liner wrapped in a fiber-resin composite material around the barrel (Type II), pressure vessels with a metal liner wrapped in a fiber-resin composite material around the head and barrel (Type III), pressure vessels with a plastic liner and a metal valve seat, with a fiber-resin composite material wrapped around the head and barrel (Type IV), and pressure vessels combining a metal valve seat with a fiber-resin composite material (Type V). With the development of pressure vessels, the proportion of fiber-resin composite materials used in pressure vessels has increased, and their products have gradually developed towards lighter weight, higher strength, and better fatigue performance. They are widely used in aviation energy storage, hydrogen storage and transportation, breathing cylinders, and other applications for the storage of high-pressure gases and liquids. Type V composite pressure vessels offer a higher weight-to-performance ratio than other vessels, with more storage capacity for the same weight. Furthermore, the vessel body does not suffer from the interface bonding issues between the metal or plastic and fiber-resin composite layers, resulting in better fatigue resistance.

[0003] However, existing Type V composite pressure vessels wrap metal valve seats between fiber-resin composite layers, as described in "Design and manufacture of a Type V composite pressure vessel using automated fiber placement." This structure is bulky and prone to stress concentration within the fiber-resin composite layers, resulting in low bonding strength and poor bonding quality. This can easily lead to gas leakage, impacting the fiber-resin composite's strength. It also suffers from slow heat dissipation, making it prone to localized overheating and overheating, limiting the service life of Type V composite pressure vessels. Therefore, it is necessary to develop a Type V pressure vessel head to address these issues. Summary of the Invention

[0004] The present invention provides an embedded anti-leakage V-type pressure vessel head, a pressure vessel and a manufacturing method. Through three connected components, the metal valve seat is embedded in the fiber resin composite material layer, which can improve the bonding strength between the metal valve seat and the fiber resin composite material layer, effectively block gas leakage, and have a good heat dissipation speed.

[0005] The present invention provides an embedded anti-leakage V-type pressure vessel head, comprising a metal valve seat and a head fiber resin composite material layer; the metal valve seat comprises component I, component II, and component III; component I comprises a disc I, a through hole I being provided at the center of disc I, and a thickness of disc I gradually decreasing from through hole I to the edge; component II comprises an integrally formed disc II and a lower connecting pipe II, a through hole II being provided at the center of disc II, a thickness of disc II gradually decreasing from through hole II to the edge, and the lower connecting pipe II being located below through hole II; component III comprises an integrally formed upper connecting pipe III, disc III, and a lower connecting pipe III, a through hole III being provided at the center of disc III, a thickness of disc III gradually decreasing from through hole III to the edge, the upper connecting pipe III being located above through hole III, and the lower connecting pipe III being located below through hole III;

[0006] The number of component II is one, the lower connecting pipe II is inserted into the through hole I, the lower connecting pipe III is inserted into the through hole II, and the space between disk II and disk I, as well as between disk III and disk II, is covered with a head fiber resin composite material layer;

[0007] Alternatively, there are multiple components II, the lower connecting pipe II of the upper component II is inserted into the through hole II of the next component II, the lower connecting pipe II at the bottom is inserted into the through hole I, the lower connecting pipe III is inserted into the through hole II at the top, and the space between the bottom disk II and disk I, between the disk IIs of two adjacent components II, and between the disk III and the top disk II are all covered with a head fiber resin composite material layer.

[0008] In the above-mentioned embedded anti-leakage V-type pressure vessel head, the inner wall of the through hole I is provided with an internal thread; the inner wall of the through hole II is provided with an internal thread, and the outer wall of the lower connecting pipe II is provided with an external thread, and the external thread of the lower connecting pipe II is matched with the internal thread of the through hole I and the internal thread of the through hole II; the through hole III and the upper connecting pipe III have the same inner diameter, and the inner walls of the through hole III and the upper connecting pipe III are both provided with internal threads, the outer wall of the lower connecting pipe III is provided with an external thread, and the external thread of the lower connecting pipe III is matched with the internal thread of the through hole II.

[0009] In the above-mentioned embedded anti-leakage V-type pressure vessel head, the external thread of the lower connecting pipe III cooperates with the internal threads of the through hole III and the upper connecting pipe III.

[0010] In the above-mentioned embedded anti-leakage V-type pressure vessel head, the taper of the external thread and the internal thread is 1:16.

[0011] In the above-mentioned embedded anti-leakage V-type pressure vessel head, the upper and lower surfaces of disk I are rough, and the lower surface is provided with an anti-slip pattern; the upper surface of disk II is rough and the lower surface is smooth; the lower surface of disk III is smooth.

[0012] The pressure vessel provided by the present invention includes a cylinder body and the above-mentioned embedded anti-leakage V-type pressure vessel head; the embedded anti-leakage V-type pressure vessel head is located at both ends of the cylinder body; the cylinder body includes a cylinder body fiber resin composite material layer, and the cylinder body fiber resin composite material layer and the corresponding head fiber resin composite material layer are integrally formed during winding.

[0013] The method for manufacturing the pressure vessel comprises the following steps:

[0014] S1, making a core mold, opening a groove at the pole hole of the core mold, inserting component I into the groove so that component I and the core mold cannot rotate relative to each other, connecting the connecting rod to the through hole I of component I, and then installing it on the winding equipment;

[0015] S2, calculating the thickness of the fiber-resin composite material layer of the head between disk II and disk I and the thickness of the fiber-resin composite material layer of the barrel, and performing winding;

[0016] S3, removing the semi-finished product completed in step S2 from the winding equipment and disassembling the connecting rod;

[0017] S4, if the number of component II is one, assemble component II, connect the connecting rod to through hole II, and then install it on the winding equipment. Calculate the thickness of the fiber-resin composite material layer of the head between disk III and disk II and the thickness of the fiber-resin composite material layer of the barrel, and then perform winding.

[0018] If there are multiple components II, the following steps are included:

[0019] t1, calculate the thickness of the fiber-resin composite material layer of the head between the disk II of two adjacent components II and the thickness of the fiber-resin composite material layer of the barrel;

[0020] t2, assemble the component II at the bottom, connect the connecting rod to the through hole II of the component II, and then install it on the winding equipment. Wind it according to the thickness calculated in step t1. After winding is completed, remove the semi-finished product from the winding equipment and disassemble the connecting rod;

[0021] t3, continue to assemble component II, connect the connecting rod to the through hole II of component II, and then install it on the winding equipment. Wind it according to the thickness calculated in step t1. After winding is completed, remove the semi-finished product from the winding equipment and disassemble the connecting rod;

[0022] At step t4, repeat step t3 until the assembly of the uppermost component II is completed. Connect the connecting rod to the through hole II of the component II and install it on the winding equipment. Calculate the thickness of the fiber-resin composite material layer of the head between disks III and II and the thickness of the fiber-resin composite material layer of the barrel, and then start winding.

[0023] S5, remove the semi-finished product completed in step S4 from the winding equipment, disassemble the connecting rod, assemble component III, connect the connecting rod with the through hole III, place it in a curing furnace for rotation and curing, and demold it to obtain a pressure vessel.

[0024] Compared with the prior art, the present invention has the following beneficial effects.

[0025] 1. Strong Structure: The embedded, leak-proof Type V pressure vessel head provided by the present invention consists of a three-part metal head, comprising three disc-shaped metal components interspersed with fiber-resin composite materials. Near the pole hole, the structure is an overlapped structure: Component I - head fiber-resin composite layer - Component II - head fiber-resin composite layer - Component III. The components are mechanically connected via threads, forming a high-strength, stable connection. The alternating structure of components and head fiber-resin composite layers solves the problem of difficult bonding between the metal valve seat and the fiber-resin composite layer, achieving a high-strength connection for the Type V pressure vessel head.

[0026] 2. Airtightness: The embedded, leak-proof Type V pressure vessel head provided by this invention features a threaded connection on the inside of the metal valve seat to prevent gas leakage. On the outside, alternating discs and fiber-resin composite layers on the head create a Z-shaped gas leakage path, extending the gas leakage path. The threaded metal components prevent separation of the fiber-resin composite layer from the metal valve seat, effectively preventing gas leakage and enhancing the airtightness of the Type V pressure vessel.

[0027] 3. Heat dissipation: Different from the existing V-type composite material winding technology that buries the metal valve seat in the fiber resin composite material, the present invention uses three threaded metal components as heat-conducting elements to penetrate the inside, middle and outside of the pressure vessel. With the good thermal conductivity of metal, the temperature changes caused by filling and deflating are released in time, ensuring the temperature stability of the pressure vessel during use and improving the fatigue performance during actual use. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0029] Figure 1 This is a schematic diagram of the structure of an embedded anti-leakage Type V pressure vessel head;

[0030] Figure 2 This is the assembly drawing of the metal valve seat;

[0031] Figure 3 This is a cross-sectional view of the metal valve seat in the assembled state;

[0032] Figure 4 It is a top view of the metal valve seat;

[0033] Figure 5 This is an exploded view of the metal valve seat;

[0034] Figure 6 It is a cross-sectional view of the exploded state of the metal valve seat;

[0035] Figure 7 This is the calculation result of the thickness of the fiber-resin composite material layer of the head using the cubic spline method.

[0036] In the figure: 1-component I; 2-component II; 3-component III; 4-head fiber resin composite material layer. DETAILED DESCRIPTION

[0037] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0038] Example 1

[0039] This embodiment provides an embedded anti-leakage V-type pressure vessel head, including a metal valve seat and a head fiber resin composite material layer 4; the metal valve seat includes component I1, component II2 and component III3.

[0040] Component I1 includes a disk I, a through hole I is provided at the center of the disk I, and the thickness of the disk I gradually decreases from the through hole I to the edge.

[0041] Component II2 includes an integrally formed disc II and a lower connecting tube II. A through hole II is provided at the center of the disc II. The thickness of the disc II gradually decreases from the through hole II to the edge. The lower connecting tube II is located below the through hole II.

[0042] Component III3 includes an integrally formed upper connecting tube III, a disc III and a lower connecting tube III. A through hole III is provided in the center of the disc III. The thickness of the disc III gradually decreases from the through hole III to the edge. The upper connecting tube III is located above the through hole III, and the lower connecting tube III is located below the through hole III.

[0043] The metal valve seat is assembled sequentially along with the winding, and different components are connected by threads. The number of component II2 can be increased or decreased according to demand, and the number of component II2 is at least one.

[0044] When the number of component II2 is one, the connection method of components I1, II2 and III3 is: the lower connecting pipe II is inserted into the through hole I, the lower connecting pipe III is inserted into the through hole II, and the space between disk II and disk I and between disk III and disk II are all covered with the head fiber resin composite material layer 4.

[0045] When there are multiple components II2, the connection method of components I1, component II2 and component III3 is: the lower connecting pipe II of the upper component II2 is inserted into the through hole II of the next component II2, the lower connecting pipe II located at the bottom is inserted into the through hole I, and the lower connecting pipe III is inserted into the through hole II located at the top, and the space between the lowest disk II and disk I, between the disk IIs of two adjacent components II2, and between the disk III and the uppermost disk II are all covered with a head fiber resin composite material layer.

[0046] The above-mentioned components I1, II2 and III3 adopt a high-strength and stable threaded connection method: the inner wall of the through hole I is provided with an internal thread; the inner wall of the through hole II is provided with an internal thread, and the outer wall of the lower connecting pipe II is provided with an external thread, and the external thread of the lower connecting pipe II is matched with the internal thread of the through hole I and the internal thread of the through hole II; the through hole III and the upper connecting pipe III have the same inner diameter, and the inner walls of the through hole III and the upper connecting pipe III are provided with internal threads, the outer wall of the lower connecting pipe III is provided with an external thread, and the external thread of the lower connecting pipe III is matched with the internal thread of the through hole II.

[0047] Preferably, the external threads of lower connecting tube III mate with the internal threads of both through-hole III and upper connecting tube III. This means that the internal threads of components I1, II2, and III3 all match. During the filament winding process, the connecting rods need to be plugged into the through-holes of the components. The internal threads of components I1, II2, and III3 all match, eliminating the need to replace different types of connecting rods.

[0048] In the above metal valve seat, the taper of the external thread and the internal thread is 1:16.

[0049] In the above-mentioned metal valve seat, the upper surface of disk I is rough to increase the bonding force between it and the fiber-resin composite material layer 4 of the head, preventing the entire structural component from rotating in the fiber, and the lower surface is rough and provided with an anti-slip pattern for connection with the core mold; the upper surface of disk II is rough to increase the bonding force between it and the fiber-resin composite material layer 4 of the head, and the lower surface is smooth. The lower surface contacts the fiber and needs to be rotated to tighten the thread. The use of a smooth surface can prevent the fiber from being worn; the lower surface of disk III is smooth.

[0050] In the above-mentioned embedded anti-leakage V-type pressure vessel head, component I1 is located inside the fiber resin composite material layer 4 of the head; component II2 is embedded in the fiber resin composite material layer 4 of the head; component III3 is located outside the fiber resin composite material layer 4 of the head, and the components are connected by threads.

[0051] Although fiber-resin composite materials are lightweight, high-strength, and have good heat resistance, their thermal conductivity is less than one-tenth of that of steel and one-hundredth of that of aluminum. For example, the thermal conductivity of the carbon fiber composite layer is 1.0-3.0W / (m•K), while the thermal conductivity of aluminum is 237W / (m•K), the thermal conductivity of tool steel (W18Cr4V) is 25.1W / (m•K), and the thermal conductivity of manganese steel is generally between 26-42W / (m•K). Temperature changes in the container caused by gas charging and discharging will greatly affect the service life of the fiber-resin composite material if they are not released in time. The head structure designed in this embodiment is connected by metal components that penetrate the interior and exterior of the head and the fiber-resin composite material layer 4 of the head. Through the high thermal conductivity of the metal, the temperature changes caused by gas charging and discharging are released in time, so that the internal temperature of the pressure vessel is maintained within the room temperature range, avoiding low and high temperature phenomena caused by long-term degassing or inflation, improving the fatigue performance of the composite material, and extending the service life of the composite pressure vessel.

[0052] The components are connected by threads to prevent gas leakage. The alternating structure of the disc and the fiber resin composite material layer 4 of the head ensures close connection while also extending the gas leakage path to achieve the purpose of blocking gas leakage.

[0053] Example 2

[0054] This embodiment provides a pressure vessel, including a cylinder body and the above-mentioned embedded anti-leakage V-type pressure vessel head; the embedded anti-leakage V-type pressure vessel head is located at both ends of the cylinder body; the cylinder body includes a cylinder body fiber resin composite material layer, and the cylinder body fiber resin composite material layer and the corresponding head fiber resin composite material layer are integrally formed during winding.

[0055] The method for manufacturing the pressure vessel comprises the following steps:

[0056] S1, making a core mold, opening a groove at the pole hole of the core mold, inserting component I1 into the groove so that component I1 and the core mold cannot rotate relative to each other, connecting the connecting rod to the through hole I of component I1 and then installing it on the winding equipment;

[0057] S2, calculating the thickness of the fiber-resin composite material layer 4 of the end cap between disk II and disk I and the thickness of the fiber-resin composite material layer of the barrel, and performing winding;

[0058] S3, removing the semi-finished product completed in step S2 from the winding equipment and disassembling the connecting rod;

[0059] S4, if the number of component II2 is one, assemble component II2, connect the connecting rod to the through hole II, and then install it on the winding equipment. Calculate the thickness of the fiber-resin composite material layer 4 of the head between disk III and disk II and the thickness of the fiber-resin composite material layer of the barrel, and then perform winding.

[0060] If there are multiple components II2, the following steps are included:

[0061] t1, calculate the thickness of the fiber-resin composite material layer 4 of the head between the disks II of two adjacent components II2 and the thickness of the fiber-resin composite material layer of the barrel;

[0062] Step 2: Assemble component II2 at the bottom, connect the connecting rod to the through hole II of component II2, and then install it on the winding equipment. Wind it according to the thickness calculated in step t1. After winding, remove the semi-finished product from the winding equipment and disassemble the connecting rod.

[0063] t3, continue to assemble component II2, connect the connecting rod to the through hole II of component II2, and then install it on the winding equipment. Wind it according to the thickness calculated in step t1. After winding is completed, remove the semi-finished product from the winding equipment and disassemble the connecting rod;

[0064] At step t4, step t3 is repeated until the uppermost component II2 is assembled. The connecting rod is connected to the through hole II of the component II2 and then installed on the winding equipment. The thickness of the fiber-resin composite material layer 4 of the end cap between disks III and II and the thickness of the fiber-resin composite material layer of the barrel are calculated, and winding is performed.

[0065] S5, remove the semi-finished product completed in step S4 from the winding equipment, disassemble the connecting rod, assemble component III3, connect the connecting rod with the through hole III, place it in a curing furnace for rotation curing and molding, and demold to obtain a pressure vessel.

[0066] In step S1, a groove pattern that cooperates with the anti-slip pattern is provided on the groove, and the component I1 and the core mold cannot rotate relative to each other through the cooperation of the anti-slip pattern and the groove pattern.

[0067] In steps S2 and S4, the thickness parameters of the fiber-resin composite material layer 4 of the end cap are calculated by the cubic spline method, and the thickness stacking control of the fiber-resin composite material layer 4 of the end cap is achieved by multiple hole expansion and winding to make it fit the component.

[0068] Example 3

[0069] The parameters in this embodiment are as follows: the minimum hole radius of the metal head ( Figure 6 The diameter of the core mold is 18mm, the radius of the core mold is 200mm, the short semi-axis of the head is 120mm, six bundles of 12k fibers are wet wound, the yarn width is 30mm, the fiber layer thickness is 0.2mm, and the geodesic spiral process is used for winding.

[0070] The cubic spline method is used to calculate the thickness of the composite material layer. Figure 7 Medium results.

[0071] It contains six layers of fiber-resin composite materials with different pore sizes, and is wound with five times of hole expansion. The layup parameters are:

[0072] (1) The pole hole radius is 18 mm and the winding is 6 layers, and the hole in this layer is not expanded;

[0073] (2) The pole hole radius is 32mm, wound in 2 layers, and the hole is expanded to 14mm;

[0074] (3) The pole hole radius is 44mm, wound in 2 layers, and the hole is expanded to 26mm;

[0075] (4) The pole hole radius is 50mm, wound in 2 layers, and the hole is expanded to 32mm;

[0076] (5) The pole hole radius is 52mm, wound in one layer, and the hole is expanded to 34mm;

[0077] (6) The pole hole radius is 80mm, wound in 5 layers, and the hole is expanded to 62mm.

[0078] This calculation is the total number of layers. During actual winding, different hole expansion processes are flexibly combined and matched with each other.

[0079] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An embedded anti-leakage V-type pressure vessel head, characterized in that: Including metal valve seat and head fiber resin composite material layer; The metal valve seat includes component I, component II and component III; The component I comprises a disk I, a through hole I is provided at the center of the disk I, and the thickness of the disk I gradually decreases from the through hole I to the edge; The component II includes an integrally formed disc II and a lower connecting pipe II. A through hole II is provided at the center of the disc II. The thickness of the disc II gradually decreases from the through hole II to the edge. The lower connecting pipe II is located below the through hole II. The component III includes an upper connecting tube III, a disc III, and a lower connecting tube III, which are integrally formed. A through hole III is provided at the center of the disc III. The thickness of the disc III gradually decreases from the through hole III to the edge. The upper connecting tube III is located above the through hole III, and the lower connecting tube III is located below the through hole III. The number of component II is one, the lower connecting pipe II is inserted into the through hole I, the lower connecting pipe III is inserted into the through hole II, and the space between disk II and disk I, as well as between disk III and disk II, is covered with a head fiber resin composite material layer; Alternatively, there are multiple components II, the lower connecting pipe II of the upper component II is inserted into the through hole II of the next component II, the lower connecting pipe II at the bottom is inserted into the through hole I, and the lower connecting pipe III is inserted into the through hole II at the top, and the space between the bottom disk II and disk I, between the disk IIs of two adjacent components II, and between the disk III and the top disk II are all covered with a head fiber resin composite material layer.

2. The embedded anti-leakage V-type pressure vessel head according to claim 1, characterized in that: The inner wall of the through hole I is provided with an internal thread; The inner wall of the through hole II is provided with an internal thread, the outer wall of the lower connecting pipe II is provided with an external thread, and the external thread of the lower connecting pipe II matches the internal thread of the through hole I and the internal thread of the through hole II; The inner diameters of the through hole III and the upper connecting tube III are the same, and the inner walls of the through hole III and the upper connecting tube III are both provided with internal threads. The outer wall of the lower connecting tube III is provided with external threads, and the external threads of the lower connecting tube III cooperate with the internal threads of the through hole II.

3. The embedded anti-leakage V-type pressure vessel head according to claim 2, characterized in that: The external thread of the lower connecting pipe III matches the internal threads of the through hole III and the upper connecting pipe III.

4. The embedded anti-leakage V-type pressure vessel head according to claim 3, characterized in that: The taper of the external and internal threads is 1:

16.

5. The embedded anti-leakage V-type pressure vessel head according to any one of claims 1 to 4, characterized in that: The upper and lower surfaces of disk I are both rough, and the lower surface is provided with anti-slip patterns; The upper surface of disk II is rough, and the lower surface is smooth; The lower surface of disk III is smooth.

6. A pressure vessel, characterized in that: It comprises a barrel and the embedded anti-leakage V-type pressure vessel head according to any one of claims 1 to 5; The embedded anti-leakage V-type pressure vessel heads are located at both ends of the cylinder body; The barrel comprises a barrel fiber resin composite material layer, and the barrel fiber resin composite material layer and the corresponding head fiber resin composite material layer are integrally formed during winding.

7. A method for manufacturing the pressure vessel according to claim 6, characterized in that: The steps include: S1, making a core mold, opening a groove at the pole hole of the core mold, inserting component I into the groove so that component I and the core mold cannot rotate relative to each other, connecting the connecting rod to the through hole I of component I, and then installing it on the winding equipment; S2, calculating the thickness of the fiber-resin composite material layer of the head between disk II and disk I and the thickness of the fiber-resin composite material layer of the barrel, and performing winding; S3, removing the semi-finished product completed in step S2 from the winding equipment and disassembling the connecting rod; S4, if the number of component II is one, assemble component II, connect the connecting rod to through hole II, and then install it on the winding equipment. Calculate the thickness of the fiber-resin composite material layer of the head between disk III and disk II and the thickness of the fiber-resin composite material layer of the barrel, and then perform winding. If there are multiple components II, the following steps are included: t1, calculate the thickness of the fiber-resin composite material layer of the head between the disk II of two adjacent components II and the thickness of the fiber-resin composite material layer of the barrel; t2, assemble the component II at the bottom, connect the connecting rod to the through hole II of the component II, and then install it on the winding equipment. Wind it according to the thickness calculated in step t1. After winding is completed, remove the semi-finished product from the winding equipment and disassemble the connecting rod; t3, continue to assemble component II, connect the connecting rod to the through hole II of component II, and then install it on the winding equipment. Wind it according to the thickness calculated in step t1. After winding is completed, remove the semi-finished product from the winding equipment and disassemble the connecting rod; At step t4, repeat step t3 until the assembly of the uppermost component II is completed. Connect the connecting rod to the through hole II of the component II and install it on the winding equipment. Calculate the thickness of the fiber-resin composite material layer of the head between disks III and II and the thickness of the fiber-resin composite material layer of the barrel, and then start winding. S5, remove the semi-finished product completed in step S4 from the winding equipment, disassemble the connecting rod, assemble component III, connect the connecting rod with the through hole III, place it in a curing furnace for rotation and curing, and demold it to obtain a pressure vessel.

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