Mobile pressure vessel and manufacturing method

Abstract

The present invention provides a mobile pressure vessel and a manufacturing method thereof, wherein the mobile pressure vessel comprises a cylinder and a wave-proof assembly. The cylinder is provided with a coating of a stainless steel layer and a base layer of a carbon steel layer, and the base layer is wrapped on the outer side of the coating. The wave-proof assembly comprises a pad and a wave-proof plate, one side of the pad is attached to the inner wall of the base layer, and a avoidance hole for avoiding the pad is provided on the coating, so that the pad can be connected to the base layer and extend toward the inside of the cylinder. A plug welding through hole is provided on the pad, and when the pad is welded to the base layer, the welding point is filled in the plug welding through hole to improve the connection strength between the pad and the base layer. The wave-proof plate is connected to the pad and is located inside the cylinder, so that the wave-proof assembly can be connected to the base layer to improve the connection strength between the wave-proof assembly and the cylinder.

Description

Technical Field

[0001] The present invention relates to the technical field of tank manufacturing, and in particular to a mobile pressure vessel and a manufacturing method thereof. Background Art

[0002] Mobile tanks, such as mobile pressure vessels, are primarily used for storing and transporting various gases, liquids, or solid materials. Their flexible mobility allows for easy relocation to accommodate diverse workloads. Furthermore, mobile tanks can be combined or separated for easy transport and operation.

[0003] The tank body of an existing mobile pressure vessel is generally made of a single material such as carbon steel or stainless steel.

[0004] However, although carbon steel is relatively strong, tanks made from it are prone to rust and stress corrosion, which affects the tank's service life. Stainless steel tanks are generally weaker than carbon steel tanks. To ensure the safety of pressurized media transported in stainless steel tanks, the tanks must have thicker walls, resulting in a heavier overall mass, which is not conducive to lightweighting mobile pressure vessels. Furthermore, due to regulatory restrictions on total weight, the volume of stainless steel tanks is limited, limiting their application. Summary of the Invention

[0005] The object of the present invention is to provide a mobile pressure vessel, which adopts carbon steel material and stainless steel material to make a composite tank body, so as to solve the defects caused by the tank body made of a single material.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0007] According to one aspect of the present application, the present application provides a mobile pressure vessel, which includes: a cylinder, which is provided with a covering and a base layer; the covering is a stainless steel layer, and the base layer is a carbon steel layer; the base layer is wrapped around the outside of the covering; a wave-breaking component, which is arranged in the cylinder; the wave-breaking component includes a pad and a wave-breaking plate; the side of the pad facing the outside of the cylinder is affixed to the inner wall of the base layer; an avoidance hole is opened on the covering corresponding to the pad, so that the avoidance hole can be passed through the side of the pad facing the inside of the cylinder; the wave-breaking plate is connected to the side of the pad facing the inside of the cylinder; wherein a plug-weld through-hole is opened on the pad, and the axial direction of the plug-weld through-hole extends along the radial direction of the cylinder; the pad is fixed to the inner wall of the base layer by a welding structure, and the welding structure is located in the plug-weld through-hole.

[0008] In one embodiment of the present application, the mobile pressure vessel further includes a surfacing layer; the surfacing layer is arranged in the avoidance hole to fill between the pad and the covering layer and cover the base layer in the avoidance hole.

[0009] In one embodiment of the present application, the surfacing layer is a structure formed by a stainless steel surfacing layer.

[0010] In one embodiment of the present application, a connecting portion is protruded from one side of the pad toward the center of the cylinder; the wave-breaking plate is fixedly connected to the pad via the connecting portion.

[0011] In one embodiment of the present application, the mobile pressure vessel further includes two heads; the two heads are respectively connected to the two axial ends of the cylinder.

[0012] In one embodiment of the present application, the head includes an inner layer and an outer layer; the inner layer is a stainless steel layer; the outer layer is a carbon steel layer, and the outer layer is wrapped around the outer side of the inner layer; wherein, when the head is installed on the cylinder, the inner layer is welded to the covering layer, and the outer layer is welded to the base layer.

[0013] In one embodiment of the present application, the thickness of the base layer is greater than the thickness of the covering layer.

[0014] In one embodiment of the present application, the mobile pressure vessel further includes a flange member; the flange member is passed through the cylinder to connect the inside and outside of the cylinder.

[0015] In one embodiment of the present application, the mobile pressure vessel further includes a support seat; the support seat is fixed on the base layer and is located at the bottom of the cylinder to support the pressure vessel.

[0016] In one embodiment of the present application, a plurality of the wave-breaking components are provided; the plurality of the wave-breaking components are axially spaced apart and arranged in the cylinder.

[0017] The present application also provides a method for manufacturing a mobile pressure vessel, providing any of the mobile pressure vessels described above, the manufacturing method comprising:

[0018] Slicing away the covering layer at a preset position inside the cylinder so that the base layer is exposed inside the cylinder, thereby forming the avoidance hole at the slicing position;

[0019] A through plug welding hole is opened on the pad, and the pad is attached to the base layer at the avoidance hole; the pad is welded in the plug welding hole to weld and fix the pad to the base layer at the avoidance hole, and a welding structure is formed in the plug welding hole.

[0020] It can be seen from the above technical solutions that the present invention has at least the following advantages and positive effects:

[0021] In the present invention, the mobile pressure vessel includes a cylinder and a wave-proof assembly. The cylinder is provided with a coating of a stainless steel layer and a base layer of a carbon steel layer, and the base layer is wrapped on the outer side of the coating. The wave-proof assembly includes a pad and a wave-proof plate, one side of the pad is attached to the inner wall of the base layer, and a avoidance hole for avoiding the pad is provided on the coating, so that the pad can be connected to the base layer and extend toward the inside of the cylinder. A plug welding through hole is provided on the pad, and when the pad is welded to the base layer, the welding point is filled in the plug welding through hole to improve the connection strength between the pad and the base layer. The wave-proof plate is connected to the pad and is located inside the cylinder, so that the wave-proof assembly can be connected to the base layer to improve the connection strength between the wave-proof assembly and the cylinder.

[0022] Because the cylinder is provided with a stainless steel cladding layer and a carbon steel base layer, and the base layer is wrapped around the outside of the cladding, the medium inside the cylinder directly contacts the cladding, which can prevent the medium from corroding the cladding and increase the service life of the cladding. At the same time, the base layer wrapped around the outside of the cladding can not only prevent the medium inside the cylinder from corroding the base layer, but also improve the overall structural strength of the cylinder, thereby ensuring that the cylinder meets actual usage requirements and reducing the overall production cost of the cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic cross-sectional view of a mobile pressure vessel according to an embodiment of the present invention.

[0024] Figure 2 yes Figure 1 Magnified view of point A.

[0025] Figure 3 yes Figure 1 Another cross-sectional schematic diagram of a mobile pressure vessel.

[0026] Figure 4 yes Figure 1 A partial schematic diagram of the cylinder of a mobile pressure vessel.

[0027] Figure 5 yes Figure 1 A partial schematic diagram of the wave-proof components of the mobile pressure vessel.

[0028] Figure 6 yes Figure 1 Schematic diagram of the base plate of a mobile pressure vessel.

[0029] The following are the descriptions of the reference numerals:

[0030] 10-cylinder; 11-coating; 12-base layer; 20-wave-breaking assembly; 21-pad; 22-wave-breaking plate; 31-surfacing layer; 40-head; 41-inner layer; 42-outer layer; 51-flange; 52-support seat; 53-traction seat; 111-avoidance hole; 211-plug welding through hole; 212-connecting part; 213-reinforcement part. DETAILED DESCRIPTION

[0031] Typical embodiments embodying the features and advantages of the present invention are described in detail in the following description. It should be understood that the present invention is capable of various variations in different embodiments without departing from the scope of the present invention, and that the descriptions and illustrations herein are intended to be illustrative rather than limiting.

[0032] In describing the present invention, it should be understood that in the embodiments shown in the accompanying drawings, indications of directions or positional relationships (such as up, down, left, right, front, and back) are merely for the purpose of facilitating the description of the present invention and simplifying the description, and are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. These descriptions are appropriate when these components are in the positions shown in the accompanying drawings. If the descriptions of the positions of these components change, the indications of these directions will also change accordingly.

[0033] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, features defined as "first" or "second" may explicitly or implicitly include one or more of the described features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0034] The tank bodies of existing mobile pressure vessels are generally made of a single material such as carbon steel or stainless steel. However, although carbon steel has high strength, tank bodies made of carbon steel are prone to rust and stress corrosion, which affects the service life of the tank body. The overall strength of a tank body made of stainless steel is lower than that of a carbon steel tank body. When a stainless steel tank body is used to transport pressurized media, in order to ensure the safety of the tank body, the tank body needs to have a larger wall thickness, resulting in a heavier overall mass of the tank body, which is not conducive to the lightweight requirements of mobile pressure vessels. At the same time, due to the restrictions on the total weight of the regulations, the volume of the stainless steel tank body is limited, thereby limiting the application scope of the stainless steel tank body. Therefore, a mobile pressure vessel is proposed to solve the above problems.

[0035] The scheme is further illustrated by the following examples:

[0036] Figure 1 It is a schematic cross-sectional view of a mobile pressure vessel according to an embodiment of the present invention. Figure 2 yes Figure 1 Magnified view of point A. Figure 3 yes Figure 1 Another cross-sectional schematic diagram of a mobile pressure vessel. Figure 4 yes Figure 1 A partial schematic diagram of the cylinder of a mobile pressure vessel.

[0037] See also Figure 1 The mobile pressure vessel of this embodiment can be configured as a cryogenic storage tank for storing cryogenic liquid or gaseous media, such as liquefied natural gas, liquefied gasoline, etc.

[0038] In some other embodiments, the mobile pressure container can also be used to transport or store liquids at room temperature, such as liquid food or chemical products.

[0039] See also Figure 1 The mobile pressure vessel includes a cylinder 10, a wave-proof assembly 20, and two heads 40. The two heads 40 are respectively connected to the two axial ends of the cylinder 10, and the wave-proof assembly 20 is installed inside the cylinder 10 so that the wave-proof assembly 20 can reduce the fluctuation and impact of the medium in the pressure vessel.

[0040] See Figure 2 and Figure 4 The cylinder 10 may be provided with a coating 11 and a base layer 12. The coating 11 may be provided as a stainless steel layer, the base layer 12 may be provided as a carbon steel layer, and the base layer 12 may be wrapped around the outside of the coating 11 so that the base layer 12 can be completely wrapped around the outside of the coating 11.

[0041] It should be noted that carbon steel is stronger than stainless steel. Using carbon steel as the base layer 12 ensures the structural strength of the cylinder 10 itself and ensures that the structural strength of the pressure vessel meets industry standards. Furthermore, carbon steel is less expensive than stainless steel. While maintaining the same structural strength, using carbon steel as the base layer 12 can reduce the manufacturing cost of the cylinder 10.

[0042] At the same time, stainless steel has higher corrosion resistance than carbon steel. Therefore, the coating 11 made of stainless steel is used so that the coating 11 is in direct contact with the medium and can isolate the medium from the base layer 12 made of carbon steel, thereby avoiding stress corrosion cracking of the pressure vessel when the carbon steel material comes into contact with the medium, thereby improving the service life of the pressure vessel.

[0043] Therefore, the cylinder 10 composed of the stainless steel coating 11 and the carbon steel base 12 can take into account the structural strength and corrosion resistance of the pressure vessel, the volume and lightweight of the pressure vessel, and reduce the manufacturing cost of the pressure vessel.

[0044] See Figure 4 The thickness of the base layer 12 can be greater than the thickness of the coating 11. Since the base layer 12 is a carbon steel layer, increasing the thickness of the base layer 12 can not only enhance the structural strength of the cylinder 10, but also reduce the manufacturing cost of the cylinder 10.

[0045] In some other embodiments, the thickness of the base layer 12 can be set to be the same as the thickness of the cover layer 11.

[0046] In this embodiment, during the actual production process of the pressure vessel, the coating 11 and the base layer 12 can be pressed together to form a composite plate material having the coating 11 of stainless steel and the base layer 12 of carbon steel, and then the composite plate material is made into a cylinder 10 according to a predetermined shape.

[0047] It should be noted that the cylinder body 10 can be assembled by welding multiple cylinder segments, each of which is also made of a cladding 11 and a base layer 12. When welding multiple cylinder segments, the cladding 11 of different cylinder segments are welded in a corresponding manner, and the base layers 12 of different cylinder segments are welded in a corresponding manner, so that multiple cylinder segments can be welded together to form the cylinder body 10. In addition, when welding different cylinder segments, the cladding 11 between different cylinder segments is connected by a stainless steel welding layer, and the base layers 12 between different cylinder segments are connected by a carbon steel welding layer to ensure the stability of the connection between the different cylinder segments.

[0048] Figure 5 yes Figure 1 A partial schematic diagram of the wave-proof components of the mobile pressure vessel. Figure 6 yes Figure 1 Schematic diagram of the base plate of a mobile pressure vessel.

[0049] See Figure 3 and Figure 5 The wave-proof component 20 can be arranged in the cylinder 10. The wave-proof component 20 can include a pad 21 and a wave-proof plate 22.

[0050] The side of the backing plate 21 facing the outside of the cylinder 10 can be attached to the inner wall of the base layer 12 , that is, the backing plate 21 is directly connected to the base layer 12 to enhance the connection strength between the backing plate 21 and the base layer 12 .

[0051] It should be noted that since the cylinder 10 is composed of a coating 11 and a base layer 12, and the wave-proof assembly 20 is subjected to the axial impact force of the liquid medium in the cylinder 10, the pad 21 is connected to the base layer 12 to ensure the connection strength between the wave-proof assembly 20 and the cylinder 10, and to ensure the structural strength of the wave-proof assembly 20. In addition, if the pad 21 is connected to the coating 11, when the wave-proof assembly 20 is subjected to an axial impact force, the coating 11 will not be able to withstand the axial force, which may easily cause cracking or bulging at the connection between the coating 11 and the pad 21, thereby affecting the use of the cylinder 10. Therefore, in this embodiment, the pad 21 needs to be directly connected to the base layer 12 to ensure the connection strength between the wave-proof assembly 20 and the cylinder 10.

[0052] An avoidance hole 111 may be opened on the covering layer 11 corresponding to the backing plate 21 , so that the side of the backing plate 21 facing the inside of the cylinder 10 can pass through the avoidance hole 111 and extend into the inside of the cylinder 10 .

[0053] The wave-breaking plate 22 is connected to the side of the pad 21 facing the inside of the cylinder 10, so that the wave-breaking plate 22 can be stretched across the cylinder 10 to reduce the fluctuation and impact of the medium in the pressure vessel and ensure the safety of the medium during transportation.

[0054] In this embodiment, both the backing plate 21 and the wave-breaking plate 22 can be set as carbon steel plates, so that the connection strength between the backing plate 21 and the base layer 12 meets the requirements.

[0055] Of course, in some other embodiments, the pad 21 and the wave-breaking plate 22 may also be made of stainless steel plates to improve the corrosion resistance of the wave-breaking component 20.

[0056] See Figure 6 The backing plate 21 may be provided with a plug welding through-hole 211, and the axial direction of the plug welding through-hole 211 may extend along the radial direction of the cylinder 10. The backing plate 21 is fixed to the inner wall of the base layer 12 via a welding structure, and the welding structure is located within the plug welding through-hole 211. That is, when the backing plate 21 is welded to the base layer 12, the weld spot is built up within the plug welding through-hole 211, thereby enhancing the connection strength and stability between the backing plate 21 and the base layer 12.

[0057] See Figure 5 The mobile pressure vessel may further include a cladding layer 31. The cladding layer 31 is disposed in the avoidance hole 111 to fill the space between the backing plate 21 and the cladding layer 11 and cover the base layer 12 in the avoidance hole 111, thereby ensuring the connection stability among the backing plate 21, the base layer 12, and the cladding layer 11, and preventing the medium in the cylinder 10 from contacting the base layer 12 through the avoidance hole 111, thereby preventing the medium from corroding the base layer 12.

[0058] It should be noted that the weld overlay 31 is formed of stainless steel to prevent corrosion when the weld overlay 31 comes into contact with the medium in the cylinder 10. Furthermore, after welding the weld overlay 31 within the avoidance hole 111, the inner wall of the weld overlay 31 needs to be polished to ensure that the inner wall of the weld overlay 31 remains flat, thereby increasing the weld seam area of ​​the weld overlay 31 and the weld strength, thereby preventing the coating 11 from being torn when the medium fluctuates within the tank.

[0059] See Figure 3 and Figure 5 A connecting portion 212 may be protruded from one side of the pad 21 facing the center of the cylinder 10 , and the wave-breaking plate 22 is fixedly connected to the pad 21 through the connecting portion 212 .

[0060] In this embodiment, the connection portion 212 and the wave-breaking plate 22 can be connected by connecting bolts. Of course, in other embodiments, the connection portion 212 and the wave-breaking plate 22 can also be welded or riveted to connect the wave-breaking plate 22 to the backing plate 21.

[0061] See Figure 3 The shape of the connecting portion 212 can be set to an arc or fan shape that matches the inner wall of the cylinder 10, so that the connecting portion 212 can be connected to the wave-breaking plate 22 and the wave-breaking plate 22 can lie across the cylinder 10.

[0062] Meanwhile, a plurality of pads 21 and connecting portions 212 are provided, and the pads 21 and connecting portions 212 correspond to each other one by one, and the plurality of pads 21 and connecting portions 212 are circumferentially arranged on the inner wall of the cylinder 10 .

[0063] In this embodiment, a plurality of wave-breaking plates 22 may be provided. The plurality of wave-breaking plates 22 are all connected to the connecting portion 212 of the backing plate 21, and the plurality of wave-breaking plates 22 are spaced apart along a certain radial direction, so that the wave-breaking plates 22 can cut and buffer the flow of the liquid medium in the cylinder 10, thereby reducing the damage to the container caused by the fluctuation of the liquid medium.

[0064] See Figure 5 A reinforcing portion 213 is further provided between the connecting portion 212 and the backing plate 21 to enhance the connection strength between the connecting portion 212 and the backing plate 21. The reinforcing portion 213 may be provided as a welding layer or may be provided integrally with the backing plate 21 and the connecting portion 212.

[0065] It should be noted that, in actual use, the reinforcing portion 213 needs to be concavely polished to achieve a smooth transition between the pad 21 and the connecting portion 212 , thereby ensuring the safety of the pad 21 and the connecting portion 212 during use.

[0066] See Figure 1There are multiple wave-proof components 20, and the multiple wave-proof components 20 are arranged in the cylinder 10 at intervals along the axial direction, so as to reduce the impact of the liquid medium in the cylinder 10 on the cylinder 10 itself, thereby ensuring the safe use of the cylinder 10.

[0067] See Figure 1 The mobile pressure vessel may further include two end caps 40 , wherein the two end caps 40 are connected to both ends of the cylinder 10 in the axial direction.

[0068] See Figure 2 The head 40 may include an inner layer 41 and an outer layer 42. The inner layer 41 is a stainless steel layer; the outer layer 42 is a carbon steel layer, and the outer layer 42 is wrapped on the outer side of the inner layer 41.

[0069] It should be noted that when the head 40 is installed on the cylinder 10, the inner layer 41 is welded to the covering 11, and the outer layer 42 is welded to the base layer 12 to ensure that the stainless steel layer and the carbon steel layer between the cylinder 10 and the head 40 can be welded accordingly, thereby ensuring the stability of the connection between the head 40 and the cylinder 10.

[0070] See Figure 1 The mobile pressure vessel may further include a flange 51. The flange 51 may be provided on the cylinder 10 to connect the inside and outside of the cylinder 10. A plurality of flanges 51 may be provided, and the flanges 51 may be provided as an injection port or an outlet for injecting or discharging a medium.

[0071] It should be noted that when the flange 51 has a large diameter, it can be forged from carbon steel and then welded onto stainless steel to reduce manufacturing costs while ensuring corrosion resistance. When the flange 51 has a small diameter, the support base 52 can be forged from stainless steel to ensure both structural strength and corrosion resistance.

[0072] See Figure 1 The mobile pressure vessel may further include a support base 52. The support base 52 may be fixed on the base 12 and located at the bottom of the cylinder 10 to support the pressure vessel.

[0073] In this embodiment, the support base 52 can be connected to the running mechanism so that the pressure vessel can move with the running mechanism. At the same time, the support base 52 can be set as a carbon steel support base to support the pressure vessel.

[0074] Of course, in some other embodiments, the support base 52 may also be made of other metal materials to ensure the structural strength of the support base 52 .

[0075] In this embodiment, the mobile pressure vessel may further include a traction seat 53. The traction seat 53 may be mounted on the bottom of the cylinder 10, located at the axial end of the cylinder 10, and spaced apart from the support seat 52. The traction seat 53 may be connected to a tractor head, enabling the tractor head to drive and move the pressure vessel.

[0076] Furthermore, the fifth wheel 53 can be constructed of carbon steel, ensuring sufficient structural strength to support and pull the pressure vessel. Furthermore, the carbon steel fifth wheel 53 can be directly welded to the carbon steel base layer 12, ensuring a strong connection between the fifth wheel 53 and the base layer 12.

[0077] In summary, the cylinder 10 includes a coating 11 and a base layer 12, and the backing plate 21 of the wave-breaking assembly 20 is connected to the base layer 12. This can simultaneously improve the corrosion resistance of the cylinder 10 while enhancing the structural strength of the cylinder 10 and reducing the manufacturing cost of the cylinder 10. Furthermore, since the backing plate 21 is connected to the base layer 12, the connection strength between the base layer 12 and the backing plate 21 can be ensured, thereby ensuring the structural strength and safety of the wave-breaking assembly 20.

[0078] The present application also provides a method for manufacturing a mobile pressure vessel, which is applicable to the aforementioned mobile pressure vessel, and the manufacturing method comprises:

[0079] S1. Slice off the covering layer 11 at a preset position inside the cylinder 10 so that the base layer 12 is exposed inside the cylinder 10 and form an avoidance hole 111 at the slicing position.

[0080] S2. A plug welding through hole 211 is formed in the backing plate 21, and the backing plate 21 is attached to the base layer 12 at the avoidance hole 111. Simultaneously, the backing plate 21 is welded in the plug welding through hole 211 to secure the backing plate 21 to the base layer 12 at the avoidance hole 111, and a welded structure is formed in the plug welding through hole 211.

[0081] It should be noted that after the backing plate 21 is welded to the base layer 12 , a stainless steel surfacing layer 31 needs to be built-up in the avoidance hole 111 to fill the avoidance hole 111 and cover the base layer 12 in the avoidance hole 111 .

[0082] In addition, after the surfacing layer 31 is completed by surfacing welding, the inner wall of the surfacing layer 31 needs to be polished to keep the inner wall of the surfacing layer 31 flat and prevent the fluctuation of the medium in the cylinder 10 from affecting the surfacing layer 31.

[0083] While the present invention has been described with reference to several exemplary embodiments, it should be understood that the terms used are intended to be illustrative and exemplary rather than restrictive. Since the present invention can be embodied in many forms without departing from the spirit or essence of the invention, it should be understood that the above-described embodiments are not limited to any of the foregoing details, but should be interpreted broadly within the spirit and scope of the appended claims. All changes and modifications that fall within the scope of the claims or their equivalents are intended to be covered by the appended claims.

Claims

1. A mobile pressure vessel, characterized in that: include: The cylinder is provided with a coating and a base layer; the coating is a stainless steel layer, the base layer is a carbon steel layer; the base layer is wrapped around the outside of the coating; There are two sealing heads, and the two sealing heads are respectively connected to the two ends of the cylinder in the axial direction; A wave-proof assembly is disposed in the cylinder; the wave-proof assembly includes a pad and a wave-proof plate; the pad is attached to the inner wall of the base layer on one side facing the outside of the cylinder; a relief hole is provided on the covering layer corresponding to the pad, so that the relief hole can be provided on the side of the pad facing the inside of the cylinder; the wave-proof plate is connected to the side of the pad facing the inside of the cylinder; a surfacing layer, the surfacing layer being arranged in the avoidance hole to fill between the backing plate and the covering layer and cover the base layer in the avoidance hole; A plug welding through hole is provided on the backing plate, and the axial direction of the plug welding through hole extends along the radial direction of the cylinder; the backing plate is fixed to the inner wall of the base layer through a welding structure, and the welding structure is located in the plug welding through hole.

2. The mobile pressure vessel according to claim 1, characterized in that: The surfacing layer is a structure formed by a stainless steel surfacing layer.

3. The mobile pressure vessel according to claim 1, characterized in that: A connecting portion is protruded from one side of the pad toward the center of the cylinder; the wave-breaking plate is fixedly connected to the pad via the connecting portion.

4. The mobile pressure vessel according to claim 1, characterized in that: The head includes an inner layer and an outer layer; the inner layer is a stainless steel layer; the outer layer is a carbon steel layer, and the outer layer is wrapped around the outer side of the inner layer; Wherein, when the head is mounted on the cylinder, the inner layer is welded to the covering layer, and the outer layer is welded to the base layer.

5. The mobile pressure vessel according to claim 1, characterized in that: The thickness of the base layer is greater than the thickness of the covering layer.

6. The mobile pressure vessel according to claim 1, characterized in that: It also includes a flange piece; the flange piece is passed through the cylinder to connect the inside and outside of the cylinder.

7. The mobile pressure vessel according to claim 1, characterized in that: It also includes a support base; the support base is fixed on the base layer and is located at the bottom of the cylinder to support the pressure container.

8. The mobile pressure vessel according to claim 1, characterized in that: There are multiple wave-breaking components, and the multiple wave-breaking components are arranged in the cylinder at intervals along the axial direction.

9. A method for manufacturing a mobile pressure vessel, characterized in that: A mobile pressure vessel according to any one of claims 1 to 8 is provided, wherein the manufacturing method comprises: Slicing away the covering layer at a preset position inside the cylinder so that the base layer is exposed inside the cylinder, thereby forming the avoidance hole at the slicing position; A through plug welding hole is opened on the pad, and the pad is attached to the base layer at the avoidance hole; the pad is welded in the plug welding hole to weld and fix the pad to the base layer at the avoidance hole, and a welding structure is formed in the plug welding hole.

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