Tank comprising sleeve fitted to limit deformation of end wall and at least one end wall
By designing the narrow structure of the pipe sleeve and the end wall, it is fixed and combined in the radial direction, the bending and tensile force problems of the welded part caused by liquid pressure in the low-temperature container tank is solved, simplifying the assembly and disassembly process, and reducing the tank weight and complexity.
Patent Information
- Application Number
- CN202410744722.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Priority Date
- 2023-06-13
- Filing Date
- 2024-06-11
- Publication Date
- 2024-12-13
AI Technical Summary
The existing low-temperature container tanks are separated from the tube sleeve due to liquid pressure in a high pressure state, and the welded part is subjected to bending and tensile forces, resulting in complex assembly and difficult to disassemble.
A narrow surface structure of the pipe sleeve and the end wall is designed to make the end wall and the pipe sleeve fixedly and combine in the radial direction to avoid bending and tensile forces caused by pressure distance. The design of the welded part reduces the butt welded part and peripheral sleeve. Reinforcement requirements for cylinders.
It effectively avoids deformation of the welded part and peripheral sleeve caused by pressure, simplifies the assembly and disassembly of the tank, and reduces the weight and assembly complexity of the tank.
Smart Images
Figure CN119123292A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to a tank comprising a tube jacket and at least one end wall, which is assembled to limit deformation of the end wall during operation, and to a cryogenic container comprising at least one such tank. Background Art
[0002] exist Figure 1 In the illustrated embodiment, the aircraft 10 includes a plurality of cryogenic containers 12 configured to store hydrogen in a cryogenic state, a plurality of power devices (engines) 14 that operate on hydrogen, and a supply system 16 configured to transfer hydrogen from the containers 12 to the power devices 14. Each cryogenic container 12 includes an inner tank, an outer tank in which the inner tank is placed, and two opposing connection systems that connect the diameters of the inner tank and the outer tank.
[0003] according to Figure 2 and Figure 3 In the embodiment shown, each tank 18 comprises: a sleeve 20 extending between a first end 20.1 and a second end 20.2; and a first end wall 22 and a second end wall 24, which are respectively located at the first end 20.1 and the second end 20.2 of the sleeve 20 to close the sleeve. The sleeve 20 is cylindrical and has an axis of rotation A20 (rotation axis or rotational symmetry axis A20).
[0004] In the following description, the longitudinal direction is parallel to the rotation axis A20. The longitudinal plane is a plane containing the rotation axis A20. The transverse plane is perpendicular to the rotation axis A20. The radial direction is perpendicular to the rotation axis A20.
[0005] Each of the first end 20.1 and the second end 20.2 of the sleeve 20 is circular and located in a transverse plane. Each end wall 22, 24 is dome-shaped and comprises a free edge 22.1, 24.1, which is located in the plane and connected to the sleeve 20 by at least one welding line 26 (linear weld) extending over the entire circumference of the sleeve 20.
[0006] according to Figure 2 and Figure 3 In a first configuration, as can be seen in FIG. 2 , for each end wall 22 , 24 , the free edge 22 . 1 , 24 . 1 and the first end 20 . 1 or the second end 20 . 2 of the sleeve 20 are positioned end to end and connected by a weld line 26 .
[0007] according to Figure 4 In a second configuration as can be seen in FIG. 1 , at least one of the end walls 22, 24 comprises:
[0008] a dome-shaped central portion 28 having a free edge 28 . 1 positioned in a first plane P1 , the center of the central portion 28 being offset in a first direction relative to the first plane P1 ;
[0009] a peripheral sleeve 30 positioned around the central portion 28 and extending between a first end 30.1 and a second end 30.2, the second end 30.2 being offset in a first direction relative to the first end 30.1;
[0010] A joining area 32 connecting the free edge 28 . 1 of the central portion 28 and the first end 30 . 1 of the peripheral sleeve 30 .
[0011] Thus, the central portion 28 and the peripheral sleeve 30 form one and the same single piece having a narrow face C1 positioned in a first plane P1 .
[0012] Furthermore, the sleeve 20 has a countersink 34 (countersink) having an inner surface 34.1 and a bottom 34.2 remote from the first end 20.1 of the sleeve 20. The diameter of the inner surface 34.1 is substantially equal to the diameter of the outer surface F30 of the peripheral sleeve 30. The depth P of the countersink 34 (the distance between the bottom 34.2 of the countersink 34 and the first end 20.1 of the sleeve 20) is substantially equal to the distance separating the first end 30.1 and the second end 30.2 of the peripheral sleeve 30.
[0013] According to the second configuration, the end walls 22, 24 are positioned in the counterbore 34, the narrow faces C1 of the end walls 22, 24 are pressed against the bottom 34.2 of the counterbore 34, and the second end 30.2 of the peripheral sleeve 30 is positioned substantially in the same plane as the first end 20.1 of the sleeve 20. The end walls 22, 24 and the sleeve 20 are connected by a weld 36 positioned between the sleeve 20 and the peripheral sleeve 30, and the weld extends from the second end 30.2 of the peripheral sleeve 30 and / or the first end 20.1 of the sleeve 20 in the entire circumference of the sleeve.
[0014] The length L (dimension parallel to the longitudinal direction) of the welded portion 36 is smaller than half the depth P of the counterbore 34 .
[0015] This second solution allows simplifying the assembly (fitting) of the tank 18 and the possible disassembly of either end wall 22 , 24 , compared to the first configuration.
[0016] like Figure 4As shown, since the pressure of the fluid stored in the tank 18 is very high, the bonding area 32 tends to deform in the radial direction and move away from the inner surface 34.1 of the countersunk hole 34. Therefore, during operation (working), the weld 36 is subjected not only to shearing force, but also to bending force (bending force) and tensile force due to the deformation of the bonding area 32. In order to avoid such deformation, the length L of the weld 36 may be increased and / or the thickness (dimension in the transverse plane) of the peripheral sleeve 30 may be increased.
[0017] These solutions are unsatisfactory because they increase the weight of the tank, make its assembly more complicated or even make it impossible to dismantle and reassemble the end wall. Summary of the invention
[0018] The object of the present invention is to remedy all or part of the disadvantages of the prior art.
[0019] To this end, the present invention relates to a tank, which includes a sleeve extending between a first end and a second end and at least one end wall positioned at the first end; the end wall includes a dome-shaped central portion, a peripheral sleeve positioned around the central portion, and a joining area connecting the central portion and the peripheral sleeve and having a first narrow surface; the sleeve has a rotation axis and includes at least a first and a second section, the first section extends between the first end and the second section of the sleeve, the first and the second sections have a first and a second inner surface, respectively, the diameter of the second inner surface is smaller than the diameter of the first inner surface, and the sleeve includes a second narrow surface connecting the first and the second inner surfaces; the tank also includes a welding portion connecting the first section of the sleeve and the peripheral sleeve of the end wall.
[0020] According to the invention, the end wall and the first and second narrow faces of the sleeve are configured to be able to fix the joining region relative to the sleeve in a radial direction perpendicular to the rotation axis (in this direction).
[0021] In operation, the weld is no longer subject to bending and tensile forces, since the joining area of the end wall is no longer separated from the first portion of the sleeve by the pressure of the liquid stored in the tank. Therefore, it is not necessary to reinforce the peripheral sleeve and / or the weld to withstand these forces.
[0022] According to another feature, at least one element of the first narrow face of the end wall and the second narrow face of the sleeve comprises or exhibits at least one protruding shape. In addition, at least one second element of the first narrow face of the end wall and the second narrow face of the sleeve, different from the aforementioned first element, comprises or partially defines at least one receiving portion for each protruding shape (i.e., these receiving portions are for the aforementioned protruding shapes), which is configured to be able to receive the protruding shape to fix the bonding area relative to the sleeve in the radial direction.
[0023] According to another feature, the second narrow face of the sleeve and the first narrow face of the end wall are positioned in a transverse plane perpendicular to the axis of rotation.
[0024] According to another feature, the end wall comprises a shape protruding relative to the first narrow face, which is a rib-like portion (rib) extending over the entire circumference of the first edge. In addition, the sleeve has a receiving portion in the shape of a groove, which extends over the entire circumference of the second narrow face and is configured to accommodate these ribs.
[0025] According to another feature, the groove and the rib have complementary sections.
[0026] According to another feature, the ribs are situated in extension of the outer side surface of the peripheral sleeve.
[0027] According to another feature, the first and second sections are connected by a tapered second narrow face widening in a direction away from the first end of the sleeve, the first narrow face of the end wall being tapered and having substantially the same taper as the second narrow face of the sleeve.
[0028] The invention also relates to a cryogenic container comprising a tank according to one of the above-mentioned features. BRIEF DESCRIPTION OF THE DRAWINGS
[0029] Other features and advantages will become apparent from the following description of the invention, given by way of example and with reference to the accompanying drawings, in which:
[0030] - Figure 1 This is a perspective view of the aircraft.
[0031] - Figure 2 is a perspective view of a tank during assembly (assembly) showing the assembly method of the prior art,
[0032] - Figure 3 yes Figure 2 A perspective view of the tank shown at the end of assembly,
[0033] - Figure 4 is a longitudinal sectional view showing a portion of a tank according to an embodiment of the prior art,
[0034] - Figure 5 is a longitudinal sectional view showing a portion of a tank according to an embodiment of the present invention,
[0035] - Figure 6 is a longitudinal sectional view showing a part of a tank according to another embodiment of the present invention. DETAILED DESCRIPTION
[0036] exist Figure 5 and Figure 6In the illustrated embodiment, the tank 40 includes a sleeve (housing or "virole", "ferrule") 42 extending between a first end and a second end 42.1, at least one first end wall 44 positioned at the first end 42.1 of the sleeve 42 to close it, and at least one first assembly 46 connecting the first end wall 44 and the first end 42.1 of the sleeve 42.
[0037] For simplicity, Figure 5 and Figure 6 Only the first end 42.1 of the sleeve is shown. Figure 5 and Figure 6 Only a portion of the first assembly member 46 connecting the first end wall 44 and the sleeve 42 is shown.
[0038] The tank 40 comprises a second end wall connected to the second end of the sleeve 42 by a second assembly. According to one configuration, the second end wall and the second assembly are respectively identical to the first end wall 44 and the first assembly 46. As a variant, the second end wall may be different from the first end wall 44 and / or the second assembly may be different from the first assembly 46 (assembly).
[0039] According to one application, the tank 40 is configured to store a fluid such as hydrogen in a cryogenic state and under high pressure. According to one configuration, a cryogenic container configured to store a fluid (e.g., hydrogen) in a cryogenic state and positioned in a vehicle (e.g., hydrogen) includes at least one tank. According to an embodiment, the cryogenic container includes an inner tank and an outer tank in which the inner tank is positioned, at least one of the tanks in the inner tank and the outer tank being consistent with the tank 40, Figure 5 and Figure 6 A portion of the tank 40 can be seen in FIG.
[0040] According to one configuration, the sleeve 42 is cylindrical or slightly conical in shape and has an axis of rotation. Each of the first and second ends 42.1 of the sleeve 42 is circular and is positioned in a transverse plane.
[0041] according to Figure 5 and Figure 6 In the embodiment shown, the end wall 44 comprises:
[0042] a dome-shaped central portion 48 having a free edge 48 . 1 located in a first plane P1 , the center of the central portion 48 being offset in a first direction relative to the first plane P1 ,
[0043] a peripheral sleeve 50 positioned around the central portion 48 and extending between a first end 50.1 and a second end 50.2, the second end 50.2 being offset in a first direction relative to the first end 50.1,
[0044] A joining area 52 connecting the free edge 48 . 1 of the central portion 48 and the first end 50 . 1 of the peripheral sleeve 50 .
[0045] The central portion 48 and the peripheral sleeve 50 thus form one and the same single piece. The joining area 52 has a first narrow face (elongated face or edge) C1.
[0046] The central portion 48 has an inner surface F48 oriented towards the interior of the tank 40 . The peripheral sleeve 50 has an outer surface F50 opposite the central portion 48 and oriented towards the sleeve 42 .
[0047] The sleeve 42 comprises at least a first section 54 and a second section 56 coaxial with each other and with the axis of rotation of the sleeve 42, the first section 54 being cylindrical and extending between the first end 42.1 of the sleeve 42 and the second section 56. The first section 54 comprises a first inner side surface 54.1.
[0048] The second section 56 includes a second inner surface 56 . 1 having a smaller diameter than the first inner surface 54 . 1 .
[0049] The first section 54 is configured as a peripheral sleeve 50 that receives the end wall 44 .
[0050] according to Figure 5 In the first configuration, the first inner side surface 54.1 and the second inner side surface 56.1 of the first section 54 and the second section 56 are connected by a second annular narrow surface C2 located in a transverse plane (perpendicular to the axis of rotation of the sleeve 42). According to this first configuration, the first inner side surface 54.1 and the second narrow surface C2 form a countersink.
[0051] according to Figure 6 In the second structure visible in FIG. 5 , the first inner surface 54 . 1 and the second inner surface 56 . 1 of the first section 54 and the second section 56 are connected by a conical second narrow surface C2 ′, which widens away from the first end 42 . 1 of the sleeve 42 .
[0052] The first inner side surface 54.1 of the first section 54 has a diameter D54.1 and a longitudinal dimension L54.1, which corresponds to a dimension taken parallel to the longitudinal direction between the first end 42.1 and the second narrow faces C2, C2' of the sleeve 42. The diameter D54.1 of the first inner side surface 54.1 of the first section 54 is substantially equal to or slightly greater than the diameter of the outer side surface F50 of the peripheral sleeve 50. According to one arrangement, the longitudinal dimension L54.1 of the first inner side surface 54.1 of the first section 54 is determined such that when the end wall 44 is positioned in the first section 54 and abuts against the second narrow faces C2, C2' of the sleeve 42, the second end 50.2 of the peripheral sleeve 50 is positioned substantially in the same transverse plane as the first end 42.1 of the sleeve 42.
[0053] The tank (in particular, the assembly 46) includes a weld 58, which is located between the sleeve 42 and the end wall 44 (in particular, between the first section 54 of the sleeve 42 and the peripheral sleeve 50 of the end wall 44), the weld extending from the second end 50.2 of the peripheral sleeve 50 of the end wall 44 and / or the first end 42.1 of the sleeve 42. The weld 58 has a length L corresponding to a dimension obtained parallel to the longitudinal direction. According to one configuration, the length L is less than half of the longitudinal dimension L54.1 of the first inner side surface 54.1 of the first section 54. The weld 58 extends continuously over the entire circumference of the sleeve 42. It can be achieved by any suitable welding process, such as a friction welding process.
[0054] According to the features of the present invention, the first narrow face C1 and the second narrow face C2, C2' of the end wall 44 and the sleeve 42 are configured to fix the joint area 52 relative to the sleeve 42 in the radial direction. Since the joint area 52 of the end wall 44 (especially the first inner surface 54.1 thereof) will not move away from the first section 54 of the sleeve 42 due to the pressure of the fluid stored in the tank 40 during operation (work), the welded portion 58 is no longer subjected to bending and tensile forces. Therefore, it is not necessary to reinforce the peripheral sleeve 50 and / or the welded portion 58 in order to withstand these forces.
[0055] according to Figure 6 In the second configuration visible in FIG. 4 , the first narrow face C1 of the end wall 44 has a protruding shape 60 and the second narrow face C2′ of the sleeve 42 partially defines a receiving portion 62, which is configured to receive the protruding shape 60 to fix the bonding area 52 relative to the sleeve 42 in the radial direction. According to one configuration, the first narrow face C1 of the end wall 44 is conical and its taper is substantially the same as the taper of the second narrow face C2′ of the sleeve 42. In addition, the sleeve 42 has a forward groove (front face) which is defined by the first inner side surface 54.1 of the first section 54 and the second narrow face C2′ and extends over the entire circumference of the sleeve 42 and receives at least one protruding portion of the bonding area 52 of the end wall 44. According to one configuration, the first edge C1 extends the inner surface F48 of the central portion 48 of the end wall 44 discontinuously.
[0056] according to Figure 5In the first configuration as can be seen in FIG. 1 , the end wall 44 and the first narrow face C1 and the second narrow face C2 of the sleeve 42 are positioned in a plurality of transverse planes. According to the first configuration, at least one element of the first narrow face C1 of the end wall 44 and the second narrow face C2 of the sleeve 42 comprises at least one protruding shape 60. In addition, at least one second element of the first narrow face C1 of the end wall 44 and the second narrow face C2 of the sleeve 42, which is different from the aforementioned first element, comprises, for each protruding shape 60, at least one receiving portion 62 configured to receive the protruding shape 60, so as to fix the bonding area 52 in the radial direction relative to the sleeve 42.
[0057] According to one configuration, the end wall 44 includes a plurality of protrusions 60 relative to the first narrow face C1, the protrusions 60 being separated and distributed around the circumference of the first narrow face C1. In addition, the sleeve 42 includes a receiving portion 62 for each protrusion 60 at the second narrow face C2.
[0058] according to Figure 5 In another arrangement visible in the figure, the end wall 44 comprises a single protrusion shape 60 relative to the first narrow face C1, which is in the form of a rib and extends over the entire circumference of the first narrow face C1. In addition, the sleeve 42 has a single housing portion 62, which is in the form of a groove and extends over the entire circumference of the second narrow face C2, and is configured to accommodate the rib. The aforementioned groove and the aforementioned rib have complementary cross-sections, such as a U-shaped cross-section. Of course, the present invention is not limited to such cross-sectional geometries of the rib and the groove. According to one configuration, the rib is located in the extension of the outer side surface F50 of the peripheral sleeve 50. In addition, the housing portion 62 in the form of a groove is located in the extension of the first inner side surface 54.1 of the first section 54.
Claims
1. A tank comprising a sleeve (42) extending between a first end and a second end (42.1), and at least one end wall (44) positioned at the first end (42.1); The end wall (44) comprises a dome-shaped central portion (48), a peripheral sleeve (50) positioned around the central portion (48), and a joining area (52) connecting the central portion (48) and the peripheral sleeve (50) and having a first narrow surface (C1); The sleeve (42) has a rotation axis and comprises at least a first section (54) and a second section (56), the first section (54) extending between the first end (42.1) of the sleeve (42) and the second section (56), the first section (54) and the second section (56) respectively having a first inner surface (54.1) and a second inner surface (56.1), the diameter of the second inner surface (56.1) being smaller than the diameter of the first inner surface (54.1), the sleeve (42) having a second narrow surface (C2, C2') connecting the first inner surface (54.1) and the second inner surface (56.1); The tank further comprises a weld (58) connecting the first section (54) of the sleeve (42) and the peripheral sleeve (50) of the end wall (44); It is characterized in that The end wall (44) and the first narrow surface (C1) and the second narrow surface (C2, C2') of the sleeve (42) have shapes configured to fix the joining area (52) relative to the sleeve (42) in a radial direction perpendicular to the rotation axis.
2. The tank according to claim 1, characterized in that At least one element of the first narrow surface (C1) of the end wall (44) and the second narrow surface (C2) of the sleeve (42) includes or exhibits at least one protruding shape (60); Furthermore, at least one second element different from the at least one element in the first narrow surface (C1) of the end wall (44) and the second narrow surface (C2) of the sleeve (42) includes or partially defines at least one receiving portion (62) for each protrusion shape (60), and the receiving portion (62) is configured to receive the protrusion shape (60) so as to fix the bonding area (52) relative to the sleeve (42) in the radial direction.
3. The tank according to claim 2, characterized in that The second narrow face (C2) of the sleeve (42) and the first narrow face (C1) of the end wall (44) are located in a transverse plane perpendicular to the rotation axis.
4. The tank according to claim 2 or 3, characterized in that: The end wall (44) includes a protruding shape (60) relative to the first narrow face (C1), the protruding shape (60) is in the form of a rib extending in the entire circumference of the first narrow face (C1), and the sleeve (42) has a groove-shaped receiving portion (62), the groove-shaped receiving portion (62) extends in the entire circumference of the second narrow face (C2) to receive the rib.
5. The tank according to claim 4, characterized in that The groove and the rib are complementary in cross-section.
6. The tank according to claim 4 or 5, characterized in that The peripheral sleeve (50) has an outer side surface (F50) oriented toward the first section (54), and the rib is located in the extension of the outer side surface (F50) of the peripheral sleeve (50).
7. The tank according to claim 1 or 2, characterized in that: The first section (54) and the second section (56) are connected by a tapered second narrow surface (C2') that widens in a direction away from the first end (42.1) of the sleeve (42), and the first narrow surface (C1) of the end wall (44) is tapered and its taper is substantially the same as the taper of the second narrow surface (C2') of the sleeve (42).
8. A cryogenic container comprising at least one tank according to any one of the preceding claims.