Manufacturing tool for a head

Abstract

The application discloses a manufacturing tool for a head, and relates to the technical field of head manufacturing. The manufacturing tool for the head comprises a plurality of first supporting members; a supporting platform arranged above the plurality of first supporting members; an adjusting device comprising a plurality of adjusting assemblies arranged above the supporting platform to support a melon petal assembly constituting the head, the plurality of adjusting assemblies are independent of each other, and the height of each adjusting assembly is adjustable; and a central positioning member arranged above the supporting platform to abut against the radial inner end of the melon petal assembly, wherein the central positioning member is a continuously-extended ring. According to the manufacturing tool for the head, the parameters of the first supporting members, the supporting platform, the adjusting assemblies and the central positioning member can be adjusted to adapt to heads of different sizes and shapes, so that the manufacturing tool can be used to manufacture large heads and improve the manufacturing precision of the large heads, thereby meeting the stringent requirements of a nuclear fusion device on the precision of a pressure container.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of head manufacturing, in particular to a head manufacturing tool. BACKGROUND

[0002] The pressure vessel is the core equipment in the fields of petroleum, chemical industry, energy and the like, and the selection of the manufacturing material and the process optimization of the pressure vessel are directly related to the safety, durability and economy of the pressure vessel. The stainless steel becomes the ideal manufacturing material of the nuclear fusion pressure vessel due to its excellent corrosion resistance, high-temperature resistance and excellent strength. The structure of the pressure vessel is mainly composed of a cylinder and a head, wherein the head of the nuclear fusion pressure vessel Dewar is the outermost container and the pressure boundary of the nuclear fusion device, and the diameter of the head is usually more than 10 meters, even 30 meters. However, in the related art, the manufacturing precision of the large-size head with a nominal diameter greater than 10 meters is low, and it is difficult to meet the high-precision requirement of the fusion reactor pressure vessel. SUMMARY

[0003] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, one object of the present application is to provide a head manufacturing tool, which is beneficial to improve the manufacturing precision of the large-size head to meet the high-precision requirement of the fusion reactor pressure vessel.

[0004] The head manufacturing tool according to the embodiment of the present application comprises: a plurality of first support members; a support platform arranged above the plurality of first support members; an adjusting device comprising a plurality of adjusting components arranged above the support platform for supporting the melon petal components constituting the head, the plurality of adjusting components are independent of each other, and the height of each adjusting component is adjustable; and a center positioning member arranged above the support platform to abut against the radial inner end of the melon petal component, the center positioning member is a continuously extended ring.

[0005] The head manufacturing tool according to the embodiment of the present application can adjust the position of the melon petal component through the adjusting device and the center positioning member, so that the precision of the head formed after the connection of the plurality of melon petal components is higher. In combination with the support platform and the plurality of first support members, the support stability of the melon petal component can be improved to improve the stability of the head manufacturing process. By adjusting the parameters of the first support member, the support platform, the adjusting component and the center positioning member, the head manufacturing tool can also be adapted to different sizes and different shapes of the head, so that the head manufacturing tool can be used to manufacture large-size heads and improve the manufacturing precision of the large-size heads, which is beneficial to meet the stringent requirement of the nuclear fusion device on the precision of the pressure vessel.

[0006] In addition, the head manufacturing tool according to the above-mentioned embodiments of the present application can also have the following additional technical features:

[0007] According to some embodiments of the present application, the center positioning member comprises an inner ring body and an outer ring body connected in nesting, the outer ring body is located outside the inner ring body, the outer ring body is made of low magnetic material and is adapted to abut against the radially inner end of the melon petal assembly.

[0008] According to some embodiments of the present application, the adjusting assembly comprises a lifting driving member and a support pad, the support pad is arranged above the lifting driving member, the upper surface of the support pad is a downwardly inclined slope or arc surface towards the center positioning member, and the lifting driving member is adjustable to adjust the distance between the support pad and the support platform.

[0009] According to some embodiments of the present application, the adjusting assembly further comprises a plurality of limiting members, the plurality of limiting members are arranged below the support pad and uniformly distributed around the lifting driving member, the height of the limiting member is adjustable, and the limiting member is adapted to limit the support pad when the lifting driving member is adjusted to the right position.

[0010] According to some embodiments of the present application, the adjusting assembly further comprises a second support member, the second support member is arranged on the upper side of the support platform and below the lifting driving member, one end of the limiting member is connected to the support pad and the other end is adjustably arranged on the upper surface of the second support member, and the limiting member has a fastening state of being fixedly connected with the second support member and an adjusting state of being relatively movable with the second support member.

[0011] According to some embodiments of the present application, the adjusting device further comprises a plurality of annular support members, the plurality of annular support members are arranged in nesting along the radial direction, and each annular support member is provided with a plurality of adjusting assemblies arranged in spacing along the circumferential direction on the upper side.

[0012] According to some embodiments of the present application, the support platform comprises a plurality of connecting beams, the plurality of connecting beams comprises a plurality of first connecting beams extending along a first direction and a plurality of second connecting beams extending along a second direction, at least part of the first connecting beams intersect with the second connecting beams and are connected, the plurality of first connecting beams arranged along the first direction are sequentially connected, the plurality of second connecting beams arranged along the second direction are sequentially connected, and the first direction intersects with the second direction.

[0013] According to some embodiments of the present application, the support platform further comprises a reinforcing beam, the extending direction of the reinforcing beam intersects with or is parallel to the extending direction of the connecting beam, and both ends of the reinforcing beam are connected with at least one connecting beam.

[0014] According to some embodiments of the present application, the support platform further comprises an extension beam connected with the connecting beam and / or the reinforcing beam, and a support structure is arranged on the upper side of the extension beam, and the support structure is used for supporting the outer periphery of the head.

[0015] According to some embodiments of the present application, a plurality of the first support members are arranged at intervals in the first direction and / or the second direction to define at least two through channels, and the through channels extend in the first direction or the second direction, and the first direction intersects the second direction.

[0016] Additional aspects and advantages of the present application will be given, partially in the following description, partially become obvious from the following description, or be understood by practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0017] The above and / or additional aspects and advantages of the present application will become apparent and be readily understood from the following description, taken in conjunction with the accompanying drawings, in which:

[0018] Figure 1 is a schematic view of a manufacturing tool and a head according to an embodiment of the present application;

[0019] Figure 2 is a schematic view of a manufacturing tool according to an embodiment of the present application;

[0020] Figure 3 is a schematic view of a head according to an embodiment of the present application from one perspective;

[0021] Figure 4 is a schematic view of a head according to an embodiment of the present application from another perspective;

[0022] Figure 5 is a schematic view of a melon-segment assembly according to an embodiment of the present application, in which a web is shown;

[0023] Figure 6 is a schematic view of a melon-segment assembly according to an embodiment of the present application;

[0024] Figure 7 is a schematic view of a centering member according to an embodiment of the present application;

[0025] Figure 8 is a schematic view of an adjustment assembly according to an embodiment of the present application.

[0026] REFERENCE SIGNS:

[0027] head 200; melon-segment assembly 210; inner-ring segment 2101; outer-ring segment 2102; web 2103; backflow hole 2104; centering cylinder 220;

[0028] Manufacturing tool 100;

[0029] First support 10; through passage 11;

[0030] Support platform 20; connecting beam 21; first connecting beam 211; second connecting beam 212; reinforcing beam 22;

[0031] Adjusting device 30; adjusting assembly 31; lifting drive 311; support pad 312; limiting piece 313; second support 314; annular support 32; third support 321;

[0032] Center positioning piece 40; inner ring body 41; outer ring body 42; mounting bottom plate 43; annular rib plate 44. DETAILED DESCRIPTION

[0033] Embodiments of the present application are described in detail below with reference to the accompanying drawings, in which examples of the embodiments are shown, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary, only for explaining the present application, and cannot be understood as limiting the present application.

[0034] In the description of the present application, it is understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore cannot be understood as limiting the present application.

[0035] In the description of the present application, "first feature", "second feature" can include one or more features, the meaning of "multiple" is two or more, and "above" or "below" the first feature to the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them, and "above", "over" and "on" the first feature to the second feature include that the first feature is directly above and obliquely above the second feature, or only indicates that the first feature is higher than the second feature in horizontal height.

[0036] The manufacturing tool 100 of the head 200 according to an embodiment of the present application is described below with reference to the accompanying drawings.

[0037] With reference to Figures 1-8As shown, the manufacturing tool 100 of the head 200 according to the embodiments of the present application can include a first support 10, a support platform 20, an adjusting device 30 and a center positioning member 40.

[0038] The manufacturing tool 100 is used to support the plurality of melon petal assemblies 210 of the head 200 to accurately connect the plurality of melon petal assemblies 210 together to form the head 200. The plurality of melon petal assemblies 210 can be welded together, that is, the plurality of melon petal assemblies 210 can be welded together by the manufacturing tool 100 to form the head 200 and improve the manufacturing precision of the head 200, for example, to make the curvature profile, outer diameter size, inner diameter size, roundness, height and other parameters of the head 200 meet the expected size requirements in the design process. For example, in some embodiments, as shown in FIG. 1, the plurality of melon petal assemblies 210 are welded together to form the head 200. Figures 1-6 As shown, the head 200 includes a center cylinder 220 and a plurality of melon petal assemblies 210 located radially outside the center cylinder 220, and the manufacturing tool 100 is used to support the plurality of melon petal assemblies 210 so that the plurality of melon petal assemblies 210 are connected to the center cylinder 220 to form the head 200, and the head 200 is connected to the cylinder to form a pressure vessel.

[0039] Specifically, the first support 10 is a plurality of, and the support platform 20 is arranged above the plurality of first supports 10. The first support 10 can be arranged on the ground to make the first support 10 stable and not easy to shake. The plurality of first supports 10 can more stably support the support platform 20, so that the support platform 20 is not easy to shake, and the support effect on the support platform 20 is good.

[0040] The adjusting device 30 includes a plurality of adjusting assemblies 31, and the adjusting assembly 31 is arranged above the support platform 20, so that the adjusting assembly 31 is not easy to shake and has good stability. The adjusting assembly 31 is used to support the melon petal assembly 210 that constitutes the head 200, so that the melon petal assembly 210 is not easy to shake, and the support stability of the melon petal assembly 210 is better. Each melon petal assembly 210 can be supported by one adjusting assembly 31 or a plurality of adjusting assemblies 31, which is beneficial to stably support each melon petal assembly 210 to improve the manufacturing stability in the manufacturing process of the head 200.

[0041] The plurality of adjusting assemblies 31 are independent of each other, and the height of each adjusting assembly 31 is adjustable. By adjusting the height of each adjusting assembly 31, the height of each melon petal assembly 210 at different positions can be adjusted, so that the connection precision between adjacent melon petal assemblies 210 is higher. For example, by independently adjusting the height of each adjusting assembly 31 to adjust the height of the melon petal assembly 210 at different positions, the roundness parameter, height parameter and other parameters of the adjacent melon petal assemblies 210 after being connected meet the expected size requirements, so that the head 200 composed of the plurality of melon petal assemblies 210 has higher precision.

[0042] The melon petal assembly 210 generally extends downwardly from the radial outer side to the radial inner side, so the melon petal assembly 210 supported on the adjusting assembly 31 is easy to slide from the radial outer side to the radial inner side. The center positioning member 40 is arranged above the support platform 20 to abut the radial inner end of the melon petal assembly 210, and the melon petal assembly 210 can be positioned by the center positioning member 40, so that the melon petal assembly 210 is not easy to slide, which is beneficial to improve the support stability of the melon petal assembly 210.

[0043] The center positioning member 40 is continuously extended in a ring shape, so that the plurality of melon petal assemblies 210 constituting the head 200 can abut the center positioning member 40, and the plurality of melon petal assemblies 210 supported on the adjusting device 30 can be positioned by the center positioning member 40, which can improve the manufacturing precision of the head 200. The ring in the present application can be a circular ring, a polygonal ring or other ring.

[0044] For example, in some embodiments, as shown in Figures 1-7 The center positioning member 40 is continuously extended in a circular ring shape, so that the radial inner end faces of the plurality of melon petal assemblies 210 can abut the circular ring shape, so that the radial outer end faces of the plurality of melon petal assemblies 210 constitute a shape closer to a circle, so as to improve the roundness precision of the head 200, and also facilitate the subsequent connection of the plurality of melon petal assemblies 210 after being connected to the center cylinder 220, thereby improving the manufacturing precision and strength of the head 200 as a whole.

[0045] The center positioning member 40 not only serves as a reference for connecting the plurality of melon petal assemblies 210 to form the head 200, but also serves as a reference for the subsequent connection of the head 200 to the cylinder, so that the geometric center of the cylinder and the head 200 is connected along the up-down direction to form a pressure container, which is beneficial to improve the manufacturing precision of the pressure container.

[0046] Therefore, the plurality of first support members 10 can more stably support the support platform 20, the adjusting device 30 above can be more stably installed by the support platform 20, the height of each melon petal assembly 210 can be adjusted in the up-down direction by the adjusting device 30, and the radial inner ends of the plurality of melon petal assemblies 210 can be positioned in the radial direction by the center positioning member 40 to form a ring shape, which is beneficial to improve the connection precision of the plurality of melon petal assemblies 210 and the manufacturing precision of the head 200 formed by the plurality of melon petal assemblies 210.

[0047] In addition, the size, number and position of the first support 10 and the adjusting assembly 31 can be adjusted, and the size of the support platform 20 and the central positioning member 40 can be adjusted, so as to support the melon petal assembly 210 of different sizes, shapes and numbers, and facilitate the manufacturing of the end cover 200 of different sizes and shapes. Therefore, the manufacturing tool 100 of the application can be used to manufacture large-size end cover 200 to improve the manufacturing precision of the large-size end cover 200, for example, to improve the manufacturing precision of the large-size end cover 200 with a nominal diameter greater than 10 meters. Of course, the manufacturing tool 100 of the application can also be used to manufacture small-size end cover 200 to improve the manufacturing precision of the small-size end cover 200, and has a wider application range and stronger practicability.

[0048] The manufacturing tool 100 of the end cover 200 according to the embodiment of the application can adjust the position of the melon petal assembly 210 through the adjusting device 30 and the central positioning member 40, so as to improve the precision of the end cover 200 formed by connecting the plurality of melon petal assemblies 210. In combination with the support platform 20 and the plurality of first supports 10, the support stability of the melon petal assembly 210 can be improved to improve the stability of the manufacturing process of the end cover 200. Through the adjustment of the parameters of the first support 10, the support platform 20, the adjusting assembly 31 and the central positioning member 40, the manufacturing tool 100 can be adapted to different sizes and shapes of the end cover 200, so as to be used for manufacturing large-size end cover 200 and improving the manufacturing precision of the large-size end cover 200, and facilitate to meet the stringent requirements of the nuclear fusion device on the precision of the pressure vessel.

[0049] For example, in some specific embodiments, the nominal diameter of the end cover 200 is denoted as D, and the manufacturing tool 100 of the application is used to manufacture the end cover 200, so that the roundness of the end cover 200 is less than or equal to 25 mm. The melon petal assembly 210 is pressed from steel material, and the thickness of the steel material after pressing is denoted as δ. The manufacturing tool 100 of the application is used to manufacture the end cover 200, so that in the case of δ / D≥0.005, the roundness of the end cover 200 is less than or equal to 0.5%×D and less than or equal to 25 mm; in the case of δ / D<0.005 and δ<12 mm, the roundness of the end cover 200 is less than or equal to 0.8%×D and less than or equal to 25 mm.

[0050] The connection relationship between the two components in the application can be one or more of the connection modes such as bolt connection, welding, riveting and clamping. Figures 1-2 As shown in FIG. 1, the support platform 20 is arranged above the first support 10 by bolt connection, the adjusting assembly 31 is arranged above the support platform 20 by bolt connection, and the central positioning member 40 is arranged above the support platform 20 by bolt connection, so that the connection strength is high.

[0051] In some embodiments of the application, as shown in FIG. 1, Figures 1-2 andFigure 7 As shown, the center positioning member 40 comprises a nested inner ring body 41 and an outer ring body 42, and the outer ring body 42 is located outside the inner ring body 41. The outer ring body 42 is made of low magnetic material and can abut against the radially inner end of the cactus assembly 210, for example, the outer ring body 42 is made of stainless steel, nylon or the like, which can reduce the risk of contaminating the closure head 200, improve the safety of the closure head 200 in the nuclear fusion device, and maintain the stability of the magnetic field in the nuclear fusion device.

[0052] The thickness of the center positioning member 40 can be increased by the inner ring body 41 and the outer ring body 42, so that the center positioning member 40 is not easy to deform, the stability of positioning the plurality of cactus assemblies 210 is better, and the manufacturing precision of the closure head 200 is improved. The inner ring body 41 does not directly contact the cactus assembly 210, so the inner ring body 41 can be made of low-cost material, which is beneficial to meet the high strength and low cost requirements of the center positioning member 40, and has high practicability.

[0053] In some embodiments, as shown in Figures 1-2 and Figure 7 The center positioning member 40 further comprises a mounting bottom plate 43, and the whole of the nested connection of the inner ring body 41 and the outer ring body 42 is connected with the mounting bottom plate 43. The mounting bottom plate 43 is connected with the support platform 20 by bolts, and the connection strength is high. In addition, the mounting bottom plate 43 can increase the contact area between the center positioning member 40 and the support platform 20, so as to further improve the connection strength between the center positioning member 40 and the support platform 20.

[0054] In some embodiments, the center positioning member 40 further comprises a ring-shaped rib plate 44, which is connected with the inner circumferential surface of the inner ring body 41 and the mounting bottom plate 43. The ring-shaped rib plate 44 can improve the overall strength of the center positioning member 40, so that the center positioning member 40 is not easy to deform, and the radial positioning effect of the plurality of cactus assemblies 210 is more reliable.

[0055] In the embodiment in which the inner ring body 41 and the outer ring body 42 are welded, the coaxiality and cylindricity of the inner ring body 41 and the outer ring body 42 can be measured after welding, so as to reduce the risk that the subsequent positioning precision is affected by excessive welding deformation of the inner ring body 41 and the outer ring body 42. If the measured coaxiality and cylindricity do not meet the standard, post-weld machining can be used to ensure that the reference meets the precision requirements.

[0056] In some embodiments of the present application, as shown in Figures 1-2 and Figure 8As shown, the adjusting assembly 31 comprises a lifting driving member 311 and a support pad 312, the support pad 312 is arranged above the lifting driving member 311, the lifting driving member 311 can be lifted to adjust the distance between the support pad 312 and the support platform 20, that is, the height of the support pad 312 can be adjusted by the lifting driving member 311 to adjust the height of the melon segment assembly 210 above the support pad 312. The lifting driving member 311 can realize height adjustment by at least one of the structures such as air cylinder, gear and rack structure, electric push rod, etc. For example, in some embodiments, as shown in Figure 2 and Figure 8 As shown, the lifting driving member 311 is a jack.

[0057] The upper surface of the support pad 312 is a downwardly inclined slope or arc surface towards the center positioning member 40, so that the support pad 312 can adapt to the shape of the melon segment assembly 210 extending downwardly from the radially outer side to the radially inner side, which is beneficial to reduce the stress concentration between the support pad 312 and the melon segment assembly 210, reduce the risk of the melon segment assembly 210 slipping on the support pad 312, and improve the support stability of the support pad 312 to the melon segment assembly 210.

[0058] In some embodiments, as shown in Figures 1-2 and Figure 8 As shown, the adjusting assembly 31 further comprises a plurality of limiting members 313, which are arranged below the support pad 312 and uniformly distributed around the lifting driving member 311, that is, the plurality of limiting members 313 are arranged on the radially outer side of the lifting driving member 311 and uniformly arranged around the lifting driving member 311, so that the lifting driving member 311 is located in the middle of the plurality of limiting members 313, for example Figure 8 As shown, there are four limiting members 313 which are uniformly distributed around the lifting driving member 311. The plurality of limiting members 313 can limit the bottom surface of the support pad 312 in the same plane, so that the support pad 312 as a whole is not easy to incline, which is beneficial to improve the support stability of the support pad 312 to the melon segment assembly 210.

[0059] The height of the limiting member 313 can be adjusted, and the limiting member 313 can limit the support pad 312 when the lifting driving member 311 is adjusted to the right position. Here, the adjustment to the right position means that the height of the support pad 312 is adjusted by the lifting driving member 311 to the height of the melon segment assembly 210 supported by the support pad 312, which meets the expected size requirement in the design process. The height of the limiting member 313 can change with the lifting of the lifting driving member 311, so that during the lifting of the lifting driving member 311 to adjust the height of the support pad 312, the plurality of limiting members 313 always limit the bottom surface of the support pad 312 in the same plane, so that the support pad 312 is not easy to incline during the height adjustment process, and the support effect on the melon segment assembly 210 is better.

[0060] In some embodiments, as shown in Figures 1-2 and Figure 8 The adjusting assembly 31 further comprises a second support 314 located on the upper side of the support platform 20 and below the lifting driving member 311, and the limiting member 313 is connected to the support pad 312 at one end and adjustably passes through the upper surface of the second support 314 at the other end. The second support 314 can increase the height of the support pad 312, so that the melon segment assembly 210 is not easy to scratch the structure such as the support platform 20 below during the process of transferring the melon segment assembly 210 above the support pad 312, which is beneficial to protect the melon segment assembly 210. The lifting driving member 311 and the plurality of limiting members 313 can be installed on the second support 314, which is convenient to install. For example, in some embodiments, as shown in Figure 8 The lifting driving member 311 is arranged on the center area of the upper surface of the second support 314 and connected to the center area of the lower surface of the support pad 312, so that the support pad 312 is not easy to shake during the process of adjusting the height of the support pad 312 by the lifting driving member 311, and the adjustment of the height of the support pad 312 is more stable.

[0061] The limiting member 313 has a fastening state and an adjustment state. In the fastening state, the limiting member 313 is fixedly connected to the second support 314. In the adjustment state, the limiting member 313 can move relative to the second support 314. During the lifting process of the lifting driving member 311, the distance between the support pad 312 and the second support 314 changes, so that the limiting member 313 switches to the adjustment state, and the part of the limiting member 313 below the upper surface of the second support 314 can extend to the upper side of the upper surface of the second support 314 to change the size of the limiting member 313 between the support pad 312 and the second support 314 with the lifting of the lifting driving member 311. In the state of adjusting the limiting member 313 to the position by the lifting driving member 311, the limiting member 313 switches to the fastening state, so that the size of the limiting member 313 between the support pad 312 and the second support 314 is fixedly unchanged.

[0062] Therefore, by switching the state of the limiting member 313 between the fastening state and the adjustment state, the limiting member 313 can adapt to the change of the height of the support pad 312 to always limit the support pad 312, and the support effect on the melon segment assembly 210 is better.

[0063] For example, in some embodiments, as shown in Figure 2 and Figure 8As shown, the limiting member 313 includes a screw rod and a double nut structure, the upper end of the screw rod is welded with the support pad 312 and the lower end is arranged through the upper surface of the second support member 314, and the double nut structure is threadedly connected with the screw rod and is located on the upper side of the second support member 314. In the process of increasing the height of the support pad 312 by the lifting driving member 311, the limiting member 313 can be directly moved upward. In the process of reducing the height of the support pad 312 by the lifting driving member 311, the double nut structure can be loosened and rotated upward, so that the limiting member 313 moves downward with the support pad 312. In the state that the lifting driving member 311 adjusts the limiting member 313 to the position, the double nut structure can be screwed to press the lower end of the double nut structure against the second support member 314, so that the limiting member 313 cannot move downward, and the size of the limiting member 313 between the support pad 312 and the second support member 314 is fixed, so as to limit and support the support pad 312.

[0064] In some embodiments, as shown in Figures 1-2 As shown, the adjusting device 30 further includes a plurality of annular support members 32, which are arranged in a nested manner in a radial direction, and each annular support member 32 is provided with a plurality of adjusting assemblies 31 arranged in a circumferential direction on the upper side. Here, the radial direction and the circumferential direction refer to the radial direction and the circumferential direction of the head 200, and the annular support member 32 can be a circular ring, a polygonal ring or other annular shape.

[0065] Through the plurality of adjusting assemblies 31 on each annular support member 32, the plurality of melon petal assemblies 210 can be supported and adjusted in height in the circumferential direction, so that the connection accuracy of the plurality of melon petal assemblies 210 in the circumferential direction is higher, for example, the heights of the plurality of melon petal assemblies 210 at the annular support member 32 are equal. Through the plurality of adjusting assemblies 31 on the plurality of annular support members 32, different parts of the melon petal assembly 210 can be supported and adjusted in height in the radial direction, so that the connection accuracy of the plurality of melon petal assemblies 210 in the circumferential direction is higher, for example, the heights of the plurality of melon petal assemblies 210 at each annular support member 32 are equal. Through the plurality of annular support members 32 arranged in a nested manner in the radial direction, the connection accuracy of adjacent melon petal assemblies 210 in the circumferential direction and the radial direction can be improved, which is beneficial to improve the manufacturing accuracy of the whole head 200.

[0066] In some embodiments, as shown in Figures 1-2 As shown, the annular support member 32 includes a plurality of third support members 321 connected in sequence in the circumferential direction, and the size of the annular support member 32 can be adjusted by adjusting the number of the third support members 321, so that the structural design of the annular support member 32 is more flexible, which is convenient to adapt to the size of the large head 200 and is also beneficial to reduce the manufacturing difficulty of the annular support member 32.

[0067] In some embodiments of the present application, as shown in Figures 1-2As shown, the support platform 20 includes multiple connecting beams 21, which include multiple first connecting beams 211 and multiple second connecting beams 212. The first connecting beams 211 are along a first direction (e.g., Figures 1-2 The second connecting beam 212 extends along the second direction (e.g., the left-right direction shown), and extends along the second direction (e.g., the left-right direction shown). Figures 1-2 (As shown in the front and back directions). At least a portion of the first connecting beam 211 intersects and connects with the second connecting beam 212. Multiple first connecting beams 211 arranged along the first direction are connected in sequence, and multiple second connecting beams 212 arranged along the second direction are connected in sequence. The first direction and the second direction intersect, that is, the angle between the first direction and the second direction is not 0.

[0068] For example, in some specific embodiments, such as Figures 1-2 As shown, the support platform 20 includes five rows of connecting beams 21 and five columns of connecting beams 21. Each row of connecting beams 21 includes multiple first connecting beams 211 connected in the left-right direction, and each column of connecting beams 21 includes a second connecting beam 212 extending in the front-back direction. Each row of connecting beams 21 intersects with and is connected to each column of connecting beams 21.

[0069] The support platform 20 is formed by multiple first connecting beams 211 and multiple second connecting beams 212, making it easy to disassemble, adjust its layout, or expand it later. For example, by changing the number of first connecting beams 211 and the spacing between adjacent first connecting beams 211, changing the number of second connecting beams 212 and the spacing between adjacent second connecting beams 212, and changing the angle between the first and second directions, the size and shape of the support platform 20 can be adjusted to adapt to the size and shape of different end caps 200, making it highly practical. Furthermore, the support platform 20 can be formed into a frame shape, achieving lightweight design and facilitating transportation.

[0070] In some embodiments, such as Figures 1-2 As shown, the support platform 20 also includes a reinforcing beam 22. The extension direction of the reinforcing beam 22 intersects or is parallel to the extension direction of the connecting beam 21. Both ends of the reinforcing beam 22 are connected to at least one connecting beam 21, that is, any end of the reinforcing beam 22 can be connected to one, two, three or more connecting beams 21. The connecting beams 21 can improve the overall strength of the support platform 20 and increase the surface area of ​​the support platform 20, so that other structures such as adjustment devices 30 can be set on the reinforcing beam 22, which is beneficial to improving the overall strength and stability of the manufacturing fixture 100.

[0071] For example, in some specific embodiments, such as Figures 1-2As shown, the first connecting beams 211 extend in the left-right direction, the second connecting beams 212 extend in the front-rear direction, a part of the reinforcing beams 22 extend from the left front to the right rear and both ends thereof are connected to two connecting beams 211 and 212 at the same time, a part of the reinforcing beams 22 extend from the left rear to the right front and both ends thereof are connected to two connecting beams 211 and 212 at the same time, and another part of the reinforcing beams 22 extend in the front-rear direction and both ends thereof are connected to two first connecting beams 211 at the same time.

[0072] In some embodiments, the support platform 20 further comprises an extension beam (not shown in the figure) which can be connected to at least one of the connecting beams 21 and the reinforcing beams 22 located at the outer side to increase the size of the support platform 20. For example, in some specific embodiments, as shown in the figure, the extension beam can be connected to the left end of the outermost first connecting beam 211, the right end of the outermost first connecting beam 211, the front end of the outermost second connecting beam 212, the rear end of the outermost second connecting beam 212, and both ends of the outermost reinforcing beam 22 to increase the size of the support platform 20 in the left-right direction and the front-rear direction. The extension beam is connected to the connecting beams 21 by bolts and connected to the reinforcing beams 22 by bolts. Figures 1-2

[0073] The upper side of the extension beam is provided with a support structure for supporting the outer periphery of the head 200 to support and limit the radially outer end of the head 200. For example, the support structure is abutted against the outer periphery of the head 200 to exert a radially inward force on the outer periphery of the head 200, so that the head 200 is not easy to shake, the manufacturing process of the head 200 is more stable, the manufacturing error is small, and the manufacturing precision is higher. The extension section can be connected to at least one of the connecting beams 21 and the reinforcing beams 22 to increase the size of the support platform 20 in the extension direction of the connecting beams 21 and the reinforcing beams 22, which facilitates the expansion of the mounting space for mounting the support structure to limit the outer periphery of the head 200.

[0074] In some embodiments, the head 200 comprises a bottom and a straight edge section, the bottom comprises a central cylinder 220 and a plurality of petal assemblies 210, and the straight edge section is located on the upper side of the bottom and connected to the outer periphery of the bottom. The support structure can exert a radially inward pressure on the outer surface of the straight edge section in the circumferential direction to support the straight edge section, so that the overall stability of the head 200 during the manufacturing process is better.

[0075] The support structure can not only be used to support the outer periphery of the head 200, but also be used to support other structures.

[0076] In some embodiments of the present application, as shown in the figure, the support structure comprises a plurality of support members 230 which are arranged in the circumferential direction and connected to the outer periphery of the head 200. Figures 1-2 ​As shown, the plurality of first support members 10 are arranged at intervals in at least one of the first direction and the second direction to define at least two through channels 11 extending in the first direction or the second direction, the first direction intersecting the second direction. For example, at least three first support members 10 are arranged at intervals in the first direction, and a through channel 11 extending in the second direction can be defined between any two adjacent first support members 10, to define at least two through channels 11. For example, among the plurality of first support members 10, at least three first support members 10 are arranged at intervals in the first direction, and at least three first support members 10 are arranged at intervals in the second direction, to define two through channels 11 extending in the first direction and two through channels 11 extending in the second direction.

[0077] For example, in some embodiments, as Figures 1-2 As shown, the manufacturing tool 100 includes nine first support members 10, which are formed into three rows arranged in the front-rear direction, each row including three first support members 10 arranged in the left-right direction, the first support members 10 of adjacent rows in the front-rear direction being opposite to each other in the front-rear direction, forming a 3x3 matrix structure. A through channel 11 extending in the front-rear direction is defined between any two adjacent first support members 10 in the left-right direction, and a through channel 11 extending in the left-right direction is defined between any two adjacent first support members 10 in the front-rear direction, so that Figure 2 The nine first support members 10 shown define two through channels 11 extending in the front-rear direction and two through channels 11 extending in the left-right direction.

[0078] Through the through channels 11, a transfer component can be arranged below the support platform 20, so that the manufacturing tool 100 can be transferred as a whole, for example, after the manufacturing of the closure head 200 on the manufacturing tool 100 is completed, the closure head 200 and the manufacturing tool 100 can be transferred as a whole for the next step, which is convenient to operate.

[0079] A manufacturing method of the closure head 200 using the manufacturing tool 100 of one specific embodiment of the present application, and the closure head 200 manufactured thereby, will be described below, it being understood that the following description is merely exemplary and is not to be construed as limiting the present application.

[0080] The manufacturing method of the closure head 200 according to the embodiment of the present application includes the following steps:

[0081] S1: Placing a plurality of petal assemblies 210 on the manufacturing tool 100, the petal assemblies 210 being placed on the upper side of the adjusting assembly 31, and the radially inner end of the petal assembly 210 abutting against the center positioning member 40.

[0082] The head 200 comprises a plurality of segment assemblies 210, and one of the segment assemblies 210 is finally welded as the door plate. Therefore, the plurality of segment assemblies 210 in S1 are the segment assemblies 210 other than the door plate which constitute the head 200.

[0083] S2: The height of the adjusting assembly 31 is adjusted to adjust the position of the corresponding segment assembly 210, so that the allowable gap at the butt weld between adjacent segment assemblies 210 is less than or equal to 5 mm, the allowable misalignment at the butt weld between adjacent segment assemblies 210 is less than or equal to 2 mm, and the overall roundness of the plurality of segment assemblies 210 on the manufacturing tool 100 is less than or equal to 10 mm.

[0084] For example, the butt weld between adjacent segment assemblies 210 adopts a single V-shaped groove, so that the allowable gap at the butt weld is not greater than 5 mm, and the allowable misalignment is not greater than 2 mm.

[0085] S3: The butt weld between adjacent segment assemblies 210 is fixed by spot welding.

[0086] By fixing the butt weld between adjacent segment assemblies 210 by spot welding, the deformation of the segment assemblies 210 in the subsequent welding process can be reduced, and the manufacturing precision of the head 200 can be improved.

[0087] S4: The plurality of segment assemblies 210 on the manufacturing tool 100 are subjected to backing welding.

[0088] The backing welding can adopt tungsten argon arc welding, and the back of the weld is protected by protective gas. 6 mm can be reserved as the backing weld of the backing welding.

[0089] S5: The size of the door plate is determined according to the size of the head 200 and the size of the plurality of segment assemblies 210 on the manufacturing tool 100.

[0090] The door plate and the plurality of segment assemblies 210 on the manufacturing tool 100 constitute the head 200, and the size data of each segment of the head 200 can be measured by a three-dimensional coordinate scanner to determine the size of the door plate.

[0091] After the plurality of segment assemblies 210 on the manufacturing tool 100 are welded, the size of the door plate is determined according to the size of the head 200 and the remaining space on the manufacturing tool 100 to manufacture the door plate, and then the door plate is placed on the manufacturing tool 100 to be welded with other segment assemblies 210. By absorbing errors such as machining errors and installation errors through the door plate, the precision of the head 200 can be improved.

[0092] S6: The door plate is manufactured, and the door plate is placed on the upper side of the adjusting assembly 31, and the radial inner end of the door plate abuts against the center positioning member 40.

[0093] S7: Adjust the height of the adjusting assembly 31 to adjust the position of the corresponding door plate, so that the allowable gap at the butt weld of the door plate and the adjacent segment assembly 210 is less than or equal to 5mm, the allowable deviation at the butt weld of the door plate and the adjacent segment assembly 210 is less than or equal to 2mm, and the overall roundness of the head 200 is less than or equal to 10mm.

[0094] S8: Use spot welding to fix the door plate at the butt weld of the adjacent segment assembly 210.

[0095] S9: Perform tack welding on the door plate and the adjacent segment assembly 210.

[0096] S10: Perform overall welding of the head 200 assembly, adjust the welding sequence using a symmetric staggered segmented welding method, and weld the segment assemblies 210 and the door plate on the welding fixture 100.

[0097] The symmetric staggered segmented welding method, wherein symmetric welding refers to welding on both sides of the head 200 structure simultaneously or alternately, staggered refers to non-continuous and jumping welding sequence, and segmented refers to welding a long weld into several small segments. By reasonably adjusting the welding sequence using the symmetric staggered segmented welding method, welding stress concentration and welding deformation can be effectively reduced. The welding rod fills the surface. After welding, vibration aging treatment is performed to facilitate the elimination of residual stress.

[0098] S11: Place the center cylinder 220 of the head 200 radially inside the segment assemblies 210 and the door plate.

[0099] In some embodiments, the lower end of the center cylinder 220 in contact with the segment assemblies 210 is intermittently provided with a plurality of circular arc holes for cleaning backflow.

[0100] S12: Perform non-destructive testing on the weld of the head 200, and perform magnetic permeability testing on the head 200.

[0101] The results of the weld and magnetic permeability testing must meet the requirements. If not, repair according to the corresponding repair procedures.

[0102] S12: Measure and record the curved profile, outer circumference, inner diameter and height of the head 200.

[0103] As shown in Figure 1 and Figures 3-6 The head 200 according to the embodiment of the present application is obtained by using the above manufacturing method and the above manufacturing fixture 100. The head 200 includes a center cylinder 220 and a plurality of segment assemblies 210 arranged circumferentially and connected. The center cylinder 220 is located radially inside the plurality of segment assemblies 210 and is connected one by one to the plurality of segment assemblies 210.

[0104] In some embodiments, as Figure 1 and Figures 3-6 As shown in the drawings, each petal assembly 210 includes an inner ring segment 2101 located on the radially inner side, two outer ring segments 2102 located on the radially outer side and arranged in the circumferential direction, and a plurality of rib plates 2103 located on one side of the inner ring segment 2101 and the outer ring segment 2102 in the axial direction. The inner ring segment 2101, the two outer ring segments 2102, and the rib plates 2103 are welded to form the petal assembly 210. The inner ring segment 2101 and the outer ring segment 2102 are arranged in a staggered manner, and the plurality of rib plates 2103 include radially extending rib plates 2103 and circumferentially extending rib plates 2103, which are beneficial to improving the structural strength of the petal assembly 210. The interface between the rib plates 2103 and the inner ring segment 2101 and the outer ring segment 2102 is provided with a backflow hole 2104, which can be used to avoid the welding seam of the inner ring segment 2101 and the outer ring segment 2102 and to backflow, thereby facilitating subsequent cleaning of the head 200, such as cleaning the head 200 with a cleaning agent.

[0105] The head 200 is manufactured by using the manufacturing tool 100 and the manufacturing method described above. The position of the petal assembly 210 can be adjusted by adjusting the adjusting device 30 and the center positioning member 40 in the manufacturing tool 100, so that the precision of the head 200 formed after the connection of the plurality of petal assemblies 210 is better. In combination with the support platform 20 and the plurality of first support members 10, the support stability of the petal assembly 210 can be improved to improve the stability of the manufacturing process of the head 200. By adjusting the parameters of the first support member 10, the support platform 20, the adjusting assembly 31, and the center positioning member 40, the manufacturing tool 100 can be adapted to different sizes and shapes of the head 200, so that the manufacturing tool 100 can be used to manufacture large heads 200 and improve the manufacturing precision of the large heads 200, which is beneficial to meet the stringent requirements of the nuclear fusion device on the precision of the pressure vessel.

[0106] The manufacturing tool 100 of the head 200, the manufacturing method of the head 200, and other configurations and operations of the head 200 according to the embodiments of the present application are known to those skilled in the art, and will not be described in detail here.

[0107] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", and "connection" should be understood in a broad sense, for example, they can be fixedly connected, or detachably connected, or integrally connected; they can be mechanically connected, or electrically connected; they can be directly connected, or indirectly connected through an intermediate medium; they can be connected inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0108] In the description of the specification, reference to the term "embodiment", "particular embodiment", "example", etc. means that a specific feature, structure, material or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. Descriptive terms such as "embodiment", "particular embodiment", "example", etc. in the specification do not necessarily refer to the same embodiment or example. Also, the specific features, structures, materials or characteristics described can be combined in any suitable manner in one or more embodiments or examples.

[0109] Although embodiments of the application have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and alterations can be made hereto without departing from the principles and the spirit of the application, the scope of which is defined by the claims and their equivalents.

Claims

1. A manufacturing tool for a head, characterized in that, The utility model relates to a kind of sealing head positioning device, including: Multiple first supports (10); Support platform (20), which is arranged above multiple first supports (10); Adjusting device (30), which includes multiple adjusting components (31), is arranged above the support platform (20) for supporting the melon petal component (210) that constitutes the sealing head (200), multiple adjusting components (31) are independent of each other, and the height of each adjusting component (31) is adjustable; Centering member (40), which is arranged above the support platform (20) to abut with the radial inner end of the melon petal component (210), the centering member (40) is continuously extended annular, wherein, The adjusting component (31) includes lifting drive (311) and support pad (312), the support pad (312) is arranged above the lifting drive (311), the upper surface of the support pad (312) is inclined or curved surface inclined downward towards the centering member (40), the lifting drive (311) can be lifted to adjust the distance between the support pad (312) and the support platform (20), The adjusting component (31) further includes multiple limiters (313), multiple limiters (313) are located below the support pad (312) and are uniformly distributed on the side of the lifting drive (311), the height of the limiter (313) is adjustable, the limiter (313) is suitable for limiting the support pad (312) in the state that the lifting drive (311) is adjusted in place, The adjusting component (31) further includes second support (314), which is located on the upper side of the support platform (20) and is arranged below the lifting drive (311), one end of the limiter (313) is connected with the support pad (312), and the other end is adjustably threaded on the upper surface of the second support (314), the limiter (313) has a fastening state of fixed connection with the second support (314) and an adjusting state of relative movement with the second support (314).

2. The manufacturing tooling for heads of claim 1, wherein, The centering member (40) includes nested inner ring body (41) and outer ring body (42), the outer ring body (42) is located on the outer side of the inner ring body (41), the outer ring body (42) is low magnetic material and is suitable for abutting with the radial inner end of the melon petal component (210).

3. The manufacturing tooling for heads of claim 1, wherein, The adjusting device (30) further includes multiple annular supports (32), multiple annular supports (32) are arranged in nested arrangement along the radial direction, and multiple adjusting components (31) are arranged along the circumferential direction on the upper side of each annular support (32).

4. The manufacturing tooling for heads of claim 1, wherein, The support platform (20) comprises a plurality of connecting beams (21), the plurality of connecting beams (21) comprising a plurality of first connecting beams (211) extending along a first direction and a plurality of second connecting beams (212) extending along a second direction, at least part of the first connecting beams (211) intersecting and connecting with the second connecting beams (212), the plurality of first connecting beams (211) arranged along the first direction being sequentially connected, the plurality of second connecting beams (212) arranged along the second direction being sequentially connected, the first direction intersecting the second direction.

5. The manufacturing tooling for heads of claim 4, wherein, The support platform (20) further comprises a reinforcing beam (22), the reinforcing beam (22) extending in a direction intersecting or parallel to the direction in which the connecting beams (21) extend, both ends of the reinforcing beam (22) connecting with at least one connecting beam (21).

6. A manufacturing tool for heads as claimed in claim 5, characterized in that, The support platform (20) further comprises an extension beam, the extension beam connecting with the connecting beams (21) and / or the reinforcing beam (22), an upper side of the extension beam being provided with a support structure for supporting the outer periphery of the head (200).

7. A manufacturing tool for heads according to any of claims 1-5, characterized in that, The plurality of first support members (10) are arranged in a spaced manner along a first direction and / or a second direction to define at least two through channels (11), the through channels (11) extending along the first direction or the second direction, the first direction intersecting the second direction.

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