CN215713179U

CN215713179U - Heat treatment shape-preserving device for bottom of storage tank of spacecraft

Info

Publication number: CN215713179U
Application number: CN202120690505.0U
Authority: CN
Inventors: 王健
Original assignee: Lanjian Spaceflight Technology Co ltd; Landspace Technology Co Ltd; Zhejiang Landspace Technology Co Ltd
Current assignee: Lanjian Spaceflight Technology Co ltd; Landspace Technology Co Ltd; Zhejiang Landspace Technology Co Ltd
Priority date: 2021-04-06
Filing date: 2021-04-06
Publication date: 2022-02-01
Anticipated expiration: 2031-04-06

Abstract

The utility model provides a heat treatment shape-preserving device for the bottom of a storage tank of a spacecraft, which is characterized by comprising the following components: annular braced frame and profile braced frame, profile braced frame location is in on the annular braced frame, including shape adaptation storage tank bottom of the case profile backup pad, profile adjustment subassembly, the profile adjustment subassembly drives the profile backup pad along annular braced frame's radial direction removes for support storage tank bottom surface. The shape-preserving device can ensure that the mouth part and the whole molded surface of the storage box are restrained when the bottom of the storage box is subjected to heat treatment.

Description

Heat treatment shape-preserving device for bottom of storage tank of spacecraft

Technical Field

The utility model relates to the field of a heat treatment processing tool for a spacecraft, in particular to a heat treatment shape-preserving device for the bottom of a storage tank of a spacecraft.

Background

The bottom of the storage box of the spacecraft is a typical large-diameter thin-wall ellipsoidal structure shell. At present, the bottom of a storage box of a space carrier is mostly welded into the final storage box bottom by a method of part forming and tailor welding. The storage box bottom formed by split welding of the melon segments generally has the following problems: (1) the large number of large-size welding lines causes the reliability of the overall strength and performance of the box bottom to be reduced, and the flight safety of the rocket to be reduced; (2) the deformation of the product in the tailor-welding process is difficult to control, and a large amount of manual shape correction treatment is needed after the tailor-welding is finished, so that the efficiency is low; (3) the weight reduction effect is not good, and the product weight is larger because local thickening treatment is needed around the welding seam.

The problem that the bottom of the storage box of the aerospace carrier manufactured based on the split welding forming process is more outstanding exists, so that the integral forming technology of the bottom of the storage box is more and more emphasized. For example, the scheme of manufacturing the bottom of the low-temperature storage tank by adopting the integral spinning process also becomes the development trend of manufacturing the bottom of the fuel storage tank of the spacecraft at home and abroad.

However, since the bottom of the storage tank is often reinforced with an aluminum alloy by heat treatment such as 2a14, 2219, 2195, etc., the bottom after spin forming is required to be performance-reinforced by heat treatment. The heat treatment process has a relatively violent high-low temperature alternating process, so that the deformation of the product is easily caused, and aiming at the problem, the design of the heat treatment shape-preserving device which accords with the structural characteristics of the tank bottom of the storage tank of the spacecraft is very important.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects of the prior art and provides a heat treatment shape-preserving device for the bottom of a storage tank of a spacecraft.

The utility model provides a heat treatment shape-preserving device for the bottom of a storage tank of a spacecraft, which is characterized by comprising the following components: annular braced frame and profile braced frame, profile braced frame location is in on the annular braced frame, including shape adaptation storage tank bottom of the case profile backup pad, profile adjustment subassembly, the profile adjustment subassembly drives the profile backup pad along annular braced frame's radial direction removes for support storage tank bottom surface.

According to one embodiment of the utility model, the profile support plates are curved on their outer side to accommodate the bottom of half a tank, and at least four profile support plates are arranged uniformly in the circumferential direction on the annular support frame.

According to one embodiment of the utility model, the inner side of the profile support plate is curved with a smaller curvature than the outer side, and the outer side is connected to the inner side by a transverse plate.

According to one embodiment of the utility model, the profile adjustment assembly comprises a profile adjustment screw and a profile adjustment screw seat; the profile adjusting screw seat is fixed on the annular supporting frame, one end of the profile adjusting screw is clamped in the profile supporting plate, and the other end of the profile adjusting screw penetrates through the profile adjusting screw seat to drive the profile supporting plate to move along the radial direction through rotation.

According to an embodiment of the utility model, the profile adjusting assembly further comprises a profile adjusting fixing block, the profile adjusting fixing block is embedded into the intersection of the transverse plate and the inner side surface of the profile supporting plate, and one end of the profile adjusting screw is clamped in the profile adjusting fixing block.

According to an embodiment of the utility model, the profile adjustment assembly further comprises a profile guide stopper fixed to the annular support frame for stopping the profile support plate.

According to one embodiment of the utility model, the profile adjustment assembly further comprises radial support bars fixed at the intersection of the cross plate and the outer side surface of the profile support plate for supporting a tank bottom port.

According to one embodiment of the utility model, the heat treatment conformal device for the bottom of the spacecraft tank also comprises radial adjusting assemblies, and at least four radial adjusting assemblies are uniformly distributed on the annular supporting frame along the circumferential direction and are used for supporting the port of the bottom of the tank.

According to one embodiment of the present invention, the radial adjustment assembly includes a radial support block, a radial adjustment screw fixing block, a radial adjustment screw, and a radial adjustment screw seat; the radial support block is used for supporting a bottom port of the storage tank, one end of the radial adjusting screw is clamped into the combination of the radial support block and the radial adjusting screw fixing block, and the other end of the radial adjusting screw penetrates through the radial adjusting screw seat to drive the radial support block to move along the radial direction through rotation.

According to an embodiment of the present invention, the radial adjustment assembly further comprises a radial adjustment handle disposed on the adjustment interface at the other end of the radial adjustment screw.

According to the heat treatment shape-preserving device for the bottom of the storage tank of the spacecraft, the blank piece of the bottom of the storage tank of the spacecraft after integral spinning is supported by the annular supporting frame, and then the molded surface supporting frame is adjusted to adaptively support the bottom surface of the storage tank, so that the mouth part and the whole molded surface of the bottom of the storage tank are restrained by the shape-preserving device during heat treatment of the bottom of the storage tank, the dimensional precision of the bottom of the storage tank is fully ensured, and the problem of large heat treatment deformation of the bottom of the integral spinning storage tank with a large-size thin-wall structure is solved.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the utility model, as claimed.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the utility model and together with the description, serve to explain the principles of the utility model.

FIG. 1 is a perspective view of a thermal treatment conformal device for the bottom of a storage tank of an aerospace vehicle according to one embodiment of the utility model;

FIG. 2 is a side view of a thermal treatment conformal apparatus for the bottom of a spacecraft tank of yet another embodiment of the present invention;

FIG. 3 is a top view of another embodiment of the spacecraft tank bottom heat treatment conformal apparatus of the present invention;

FIG. 4 is a cross-sectional view taken in rotation A-A of FIG. 3;

FIG. 5 is an enlarged view of B in FIG. 4;

fig. 6 is an enlarged view of C in fig. 4.

Description of reference numerals:

100-annular supporting frame, 101-outer supporting ring, 1011-upper supporting frame, 1012-lower supporting frame, 102-inner supporting ring, 103-middle connecting frame, 104-annular supporting plate;

200-profile supporting frame, 201-profile adjusting component, 2011-profile adjusting screw, 2012-profile adjusting screw seat, 2013-profile adjusting fixed block, 2014-profile guiding limited block, 2015-radial supporting bar, 202-profile supporting plate, 2021-outer side face, 2022-inner side face and 2023-transverse plate;

300-radial adjusting component, 301-radial supporting block, 302-radial adjusting screw fixing block, 303-radial adjusting screw and 304-radial adjusting screw seat.

Detailed Description

Features and exemplary embodiments of various aspects of the present invention will be described in detail below, and in order to make objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not to be construed as limiting the utility model, for the purposes of illustrating the principles of the utility model. Additionally, the components in the drawings are not necessarily to scale. For example, the dimensions of some of the elements or regions in the figures may be exaggerated relative to other elements or regions to help improve understanding of embodiments of the present invention.

The directional terms used in the following description are used in the illustrated directions, and do not limit the specific configurations of the embodiments of the present invention. In the description of the present invention, it should be noted that, unless otherwise specified, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood as appropriate to those of ordinary skill in the art.

Furthermore, the terms "comprises," "comprising," "includes," "including," "has," "having" or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a structure or component comprising a list of elements does not include only those elements but may include other mechanical components not expressly listed or inherent to such structure or component. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of additional like elements in the article or device comprising the element.

Spatially relative terms such as "below," "… below," "lower," "above," "… above," "upper," and the like are used for convenience in describing the positioning of one element relative to a second element and are intended to encompass different orientations of the device in addition to different orientations than those illustrated in the figures. Further, for example, the phrase "one element is over/under another element" may mean that the two elements are in direct contact, or that there is another element between the two elements. Furthermore, terms such as "first", "second", and the like, are also used to describe various elements, regions, sections, etc. and should not be taken as limiting. Like terms refer to like elements throughout the description.

It will be apparent to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present invention by illustrating examples of the present invention.

The space vehicle referred to in this application may be a launch vehicle, missile or similar product.

FIG. 1 is a perspective view of a thermal treatment conformal device for the bottom of a storage tank of an aerospace vehicle according to one embodiment of the utility model; FIG. 2 is a side view of a thermal treatment conformal apparatus for the bottom of a spacecraft tank of yet another embodiment of the present invention; FIG. 3 is a top view of another embodiment of the spacecraft tank bottom heat treatment conformal apparatus of the present invention; FIG. 4 is a cross-sectional view taken in rotation A-A of FIG. 3; FIG. 5 is an enlarged view of B in FIG. 4; fig. 6 is an enlarged view of C in fig. 4.

As shown in figure 1, the utility model provides a heat treatment shape-preserving device for the bottom of a storage tank of an aerospace vehicle, which is characterized by comprising: the annular supporting frame 100 and the profile supporting frame 200, the profile supporting frame 200 is positioned on the annular supporting frame 100 and comprises a profile adjusting component 201 and a profile supporting plate 202 which is adaptive to the shape of the bottom of the storage tank, and the profile adjusting component 201 is used for driving the profile supporting plate 202 to move along the radial direction of the annular supporting frame 100 so as to adaptively support the bottom surface of the storage tank.

Particularly, the bottom of the storage tank of the spacecraft adopts an integral spinning manufacturing technology, and the technology has great advantages in the aspects of structure weight reduction, production efficiency, high reliability and the like and becomes a development trend in the field of manufacturing of low-temperature fuel storage tanks of rockets. The bottom of the common storage tank adopts heat treatment strengthening type aluminum alloy such as aluminum copper, aluminum lithium and the like, and the performance strengthening purpose can be achieved only by solution quenching and aging heat treatment after the integral spinning forming. Taking 2A14 aluminum alloy as an example, the material is required to be quickly (generally less than or equal to 10s) transferred to normal temperature water for cooling (solution quenching) after being subjected to heat preservation at the high temperature of 500 ℃ for 1-2h, and then subjected to heat preservation at the temperature of 160-. Therefore, the solution quenching process is a violent high-low temperature alternating process, which is accompanied by huge thermal stress and may cause severe deformation of the product, especially to a greater extent for large-sized thin-walled structures. Taking the 2219 and 2195 aluminum alloy storage box bottom with the diameter of the opening part of 3350mm and the thickness of the blank more than or equal to 20mm as an example, the roundness of the opening part of the product after solution quenching reaches more than 10mm, and the corresponding molded surface of the product also can generate larger deformation along with the roundness change of the opening part, thereby bringing adverse effects to the machining sequence of subsequent products.

In the embodiment, the heat treatment shape-preserving device for the bottom of the storage tank of the spacecraft has a rigid constraint function aiming at the deformation of the bottom of the storage tank in the heat treatment process. The annular supporting frame 100 is used for providing integral bearing for the bottom of the storage box of the spacecraft, and the outer supporting ring 101 and the inner supporting ring 102 are connected by the intermediate connecting frame 103, so that heat conduction in the heat treatment process can be accelerated, and the reliability requirement for bearing the bottom of the storage box of the spacecraft can be met.

Wherein the profile support frame 200 is the main conformal component secured to the annular support frame 100. Before the heat treatment process begins, the bottom of the spacecraft tank is first backed off on the profile support frame 200, so that the profile support plate 202 in the profile support frame 200 is designed to conform to the circular arc shape of the tank bottom. The shape-preserving device of the embodiment can be completely attached to the bottom of the storage tank by adjusting the profile supporting plate 202, so that the deformation of the bottom of the storage tank in the heat treatment process is controllable. The profile adjusting assembly 201 in the profile supporting frame 200 is used for adjusting the profile supporting plate 202 to adaptively support the bottom surface of the storage tank, adjusting the bottom of the storage tank to a theoretical profile and locking by driving the profile supporting plate 202 to move along the radial direction of the annular supporting frame 100, and then performing heat treatment on the bottom of the storage tank. By the shape-preserving device of the embodiment, deformation of the bottom of the storage box caused by thermal stress can be greatly reduced in the heat treatment, namely the solid solution strengthening process.

As shown in fig. 2 and 3, according to an embodiment of the present invention, the outer support ring 101 includes an upper support frame 1011 and a lower support frame 1012 axially spaced apart from each other, the lower support frame 1012 being located at the same level as the inner support ring 102 and connected by an intermediate connection frame 103; the annular support frame 100 further comprises an annular support plate 104, the annular support plate 104 being fixed to the outer support ring 101 for supporting the profile support frame 200.

Specifically, the outer support ring 101 in the annular support frame 100 is divided into an upper support frame 1011 and a lower support frame 1012, which are spaced up and down. The lower support frame 1012 is in the same horizontal plane with the inner support ring 102 and is connected by the intermediate connection frame 103, and the whole structure of the ring-shaped support frame 100 can provide an operation space for heat treatment for the bottom of the tank. The upper support frame 1011 and the lower support frame 1012 are connected by spaced vertical bars, and the profile support frame 200 is arranged at the spaced vertical bars along the radial direction of the annular support frame 100, so that the profile support frame 200 can be ensured to be always within the range limited by the vertical bars in the adjustment process.

The annular support frame 100 further includes an annular support plate 104, and the annular support plate 104 is fixed on the outer support ring 101, i.e. the lower support frame 1012. In order to facilitate that the profile support frame 200 can be mounted on the annular support plate 104, the annular support plate 104 is provided with radial support plates in a direction extending centrally below the profile support frame 200, which radial support plates are fixed to the lower support frame 1012, the inner support ring 102 and the intermediate connection frame 103. The annular support plate 104 and the radial support plate can ensure that the installation of the profile support frame 200 is more stable, which is convenient for the profile adjusting assembly 201 to drive the adjustment movement of the profile support plate 202.

According to one embodiment of the utility model, the outer side 2021 of the profile support plates 202 is curved to accommodate the half of the tank bottom, and at least four profile support plates 202 are arranged circumferentially uniformly on the annular support frame 100.

In particular, since the profile support plates 202 directly participate in the adaptive support of the tank bottom, while at the same time facilitating the adjustment of the profile adjustment assembly 201, the outer side 2021 of the profile support plates 202 is arranged to adapt to the arc of half of the tank bottom, and at least four profile support plates 202 are arranged circumferentially uniformly on the annular support frame 100. By arranging the profile supporting plates 202, the storage box bottom can be attached and supported in all directions through the outer side surfaces 2021 of at least four profile supporting plates 202, and deformation of the storage box bottom in the heat treatment process is further guaranteed to be controllable.

According to an embodiment of the present invention, the inner side 2022 of the profile support plate 202 is curved less than the outer side 2021, and the outer side 2021 and the inner side 2022 are connected by a horizontal plate 2023.

Specifically, the inner side surface 2022 of the profile support plate 202 is disposed in an arc shape having a smaller arc than the outer side surface 2021, and the outer side surface 2021 and the inner side surface 2022 are connected by the horizontal plate 2023, so that the profile support plate 202 takes a half-crescent shape. Through the profile supporting plate 202 of this half-moon tooth shape, the profile adjusting assembly 201 of being convenient for is to the regulation of profile supporting plate 202, and has improved the structural stability of profile supporting plate and with the structural adaptability of the bottom of the storage box, improves the shape preserving effect.

As shown in fig. 4 and 5, according to one embodiment of the present invention, the profile adjustment assembly 201 includes a profile adjustment screw 2011 and a profile adjustment screw seat 2012; a profile adjustment screw seat 2012 is fixed to the ring-shaped support frame 100, one end of a profile adjustment screw 2011 is engaged with the profile support plate 202, and the other end of the profile adjustment screw 2011 penetrates through the profile adjustment screw seat 2012 to drive the profile support plate 202 to move in the radial direction by rotation.

Specifically, the profile adjusting screw seat 2012 is used for providing an environment for fixing and rotationally adjusting the profile adjusting screw 2011, one end of the profile adjusting screw 2011 is fixed and immovable in the profile supporting plate 202, the other end of the profile adjusting screw 2011 penetrates through the profile adjusting screw seat 2012, and the other end of the profile adjusting screw 2011 is driven by external force to rotate so as to drive the profile supporting plate 202 to move along the radial direction. The other end of the profile adjusting screw 2011 is provided with an adjusting interface, the adjusting interface of this embodiment takes a square block as an example, interfaces in other forms or shapes such as a hexagonal block or a hole are all within the protection range of this embodiment, and a wrench or other tools can be connected to implement large-torque adjustment through the adjusting interface.

Wherein, the profile adjustment assembly 201 further comprises a profile adjustment handle arranged on the adjustment interface at the other end of the profile adjustment screw 2011. When the profile adjusting assembly 201 works, the profile adjusting handle is rotated to drive the profile adjusting screw 2011 to rotate, so that the profile adjusting screw 2011 axially moves in the profile adjusting screw seat 2012 along the profile adjusting screw 2011 to drive the profile supporting plate 202 to move, thereby realizing the adjustment or support of the bottom of the storage box in the profile range.

According to an embodiment of the present invention, the profile adjusting assembly 201 further includes a profile adjusting fixing block 2013, the profile adjusting fixing block 2013 is embedded at the intersection of the transverse plate 2023 and the inner side surface 2022 of the profile supporting plate 202, and one end of the profile adjusting screw 2011 is engaged with the profile adjusting fixing block 2013.

Specifically, in the actual installation process of the profile adjusting assembly 201, it is difficult to directly clamp the profile adjusting screw 2011 to the profile supporting plate 202, so that the profile adjusting fixing block 2013 needs to be embedded into the profile supporting plate 202 (specifically, at the intersection of the transverse plate 2023 and the inner side surface 2022 of the profile supporting plate 202), so as to conveniently clamp one end of the profile adjusting screw 2011 into the profile adjusting fixing block 2013. The profile adjusting fixing block 2013 is arranged to be a hollow structure, and one end of the profile adjusting screw 2011 is arranged to be convex, so that the convex block of the profile adjusting screw 2011 is clamped in the hollow structure of the profile adjusting fixing block 2013, the profile adjusting screw 2011 is beneficial to not falling off in the adjusting process, and the operation is convenient and reliable.

According to one embodiment of the present invention, the profile adjustment assembly 201 further comprises a profile guide stop 2014 fixed to the annular support frame 100 for stopping and guiding the profile support plate 202.

Specifically, profile guide limiting blocks 2014 are arranged on two sides of the transverse plate 2023 of the profile supporting plate 202, and the profile guide limiting blocks 2014 are fixed on the annular supporting frame 100. In this embodiment, the profile guide stops 2014 may be fixed to the radial support plates of the annular support plate 104. The profile support plate 202 moves relative to the profile guide stoppers 2014 during the adjustment movement, and the profile support plate 202 is limited between the profile guide stoppers 2014 on both sides, and in this process, the profile guide stoppers 2014 also play a role in guiding the profile support plate 202.

According to one embodiment of the utility model, the profile adjustment assembly 201 further includes radial support bars 2015 secured at the intersection of the transverse plate 2023 and the outer side surface 2021 of the profile support plate 202 for supporting the tank bottom port.

Specifically, the radial support bars 2015 are fixed at the intersection of the transverse plate 2023 and the outer side surface 2021 of the profile support plate 202, and the profile adjusting assembly 201 adjusts the profile support plate 202 and drives the radial support bars 2015 to press the port at the bottom of the storage tank. In this embodiment, the radial support bars 2015 can be penetratingly disposed on the profile support plate 202, or can be divided into two radial support bars 2015 respectively mounted on both sides of the profile support plate 202.

As shown in fig. 3 and 4, according to one embodiment of the utility model, the spacecraft tank bottom heat treatment conformal apparatus further comprises radial adjustment assemblies 300, and at least four radial adjustment assemblies 300 are uniformly distributed on the outer support ring 101 along the circumferential direction for supporting the tank bottom port.

Specifically, the radial adjustment assembly 300 is adjustable to compress the port at the bottom of the tank in a radial direction of the toroidal support frame 100. For example, four radial adjustment assemblies 300 are evenly distributed circumferentially on the outer support ring 101. In this embodiment, each radial adjustment assembly 300 is spaced between two adjacent profile support plates 202 so that the port at the bottom of the tank can be supported in all orientations.

As shown in fig. 6, according to an embodiment of the present invention, the radial adjustment assembly 300 includes a radial support block 301, a radial adjustment screw fixing block 302, a radial adjustment screw 303, and a radial adjustment screw seat 304; the radial support block 301 is used for supporting the bottom port of the storage tank, one end of the radial adjusting screw 303 is clamped into the combination of the radial support block 301 and the radial adjusting screw fixing block 302, and the other end of the radial adjusting screw 303 penetrates through the radial adjusting screw seat 304 to drive the radial support block 301 to move along the radial direction through rotation. The radial adjustment screw mount 304 is fixed to the annular support frame 100, and in this embodiment, the radial adjustment screw mount 304 is specifically mounted and fixed to the annular support plate 104.

Specifically, the radial adjustment assembly 300 is similar in construction to the profile adjustment assembly. A radial adjusting screw fixing block 302 is provided at a middle position of the radial supporting block 301, and a radial adjusting screw seat 304 is used for providing a fixed and rotation adjusting environment for the radial adjusting screw 303. One end of the radial adjusting screw 303 is engaged with the combination of the radial support block 301 and the radial adjusting screw fixing block 302, and the other end of the radial adjusting screw 303 penetrates the radial adjusting screw seat 304 to drive the radial support block 301 to move in the radial direction by rotation. The other end of the radial adjusting screw 303 is provided with an adjusting interface, the adjusting interface of this embodiment takes a square block as an example, interfaces in other forms or shapes such as a hexagonal block or a hole are within the protection range of this embodiment, and a wrench or other tools can be connected to implement large-torque adjustment through the adjusting interface.

According to one embodiment of the present invention, the radial adjustment assembly 300 further comprises a radial adjustment knob disposed on the adjustment interface at the other end of the radial adjustment screw 303.

Wherein, the radial adjusting assembly 300 further comprises a radial adjusting handle disposed on the adjusting interface at the other end of the radial adjusting screw 303. When the radial adjusting assembly 300 works, the radial adjusting handle is rotated to drive the radial adjusting screw 303 to rotate, so that the radial adjusting screw 303 axially moves along the radial adjusting screw 303 in the radial adjusting screw seat 304 to drive the radial supporting block 301 to move, and thus the bottom of the storage tank is adjusted or supported in a radial range.

The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A heat treatment shape-preserving device for the bottom of a storage tank of a spacecraft is characterized by comprising:

the profile adjusting assembly drives the profile supporting plate to move along the radial direction of the annular supporting frame and is used for adaptively supporting the bottom surface of the storage tank.

2. The spacecraft tank bottom heat treatment conformal device according to claim 1, wherein the outer side surfaces of the profile support plates are arc-shaped to fit half of the tank bottom, and at least four profile support plates are circumferentially and uniformly arranged on the annular support frame.

3. The heat treatment shape-preserving device for the bottom of the spacecraft tank of claim 2, wherein the inner side surface of the profile supporting plate is arc-shaped with a radian smaller than that of the outer side surface, and the outer side surface is connected with the inner side surface through a transverse plate.

4. The spacecraft tank bottom heat treatment conformal device of claim 3, wherein the profile adjustment assembly comprises a profile adjustment screw and a profile adjustment screw seat; the profile adjusting screw seat is fixed on the annular supporting frame, one end of the profile adjusting screw is clamped in the profile supporting plate, and the other end of the profile adjusting screw penetrates through the profile adjusting screw seat to drive the profile supporting plate to move along the radial direction through rotation.

5. The heat treatment conformal device for the bottom of the spacecraft tank of claim 4, wherein the profile adjustment assembly further comprises a profile adjustment fixing block, the profile adjustment fixing block is embedded into the intersection of the transverse plate and the inner side surface of the profile support plate, and one end of the profile adjustment screw is clamped in the profile adjustment fixing block.

6. The spacecraft tank bottom heat treatment conformal device of claim 5, wherein the profile adjustment assembly further comprises a profile guide limiting block fixed on the annular support frame for limiting the profile support plate.

7. The spacecraft tank floor heat treatment conformal apparatus of claim 5, wherein the profile adjustment assembly further comprises a radial support bar fixed at an intersection of a transverse plate and an outer side surface of the profile support plate for supporting a tank floor port.

8. The spacecraft tank bottom heat treatment conformal device according to claim 2, further comprising at least four radial adjustment assemblies, wherein the at least four radial adjustment assemblies are uniformly distributed on the annular support frame along the circumferential direction and are used for supporting a tank bottom port.

9. The spacecraft carrier tank bottom heat treatment conformal device according to claim 8, wherein the radial adjustment assembly comprises a radial support block, a radial adjustment screw fixing block, a radial adjustment screw and a radial adjustment screw seat; the radial support block is used for supporting a bottom port of the storage tank, one end of the radial adjusting screw is clamped into the combination of the radial support block and the radial adjusting screw fixing block, and the other end of the radial adjusting screw penetrates through the radial adjusting screw seat to drive the radial support block to move along the radial direction through rotation.

10. The spacecraft tank bottom heat treatment conformal device of claim 9, wherein the radial adjustment assembly further comprises a radial adjustment handle disposed on an adjustment interface at the other end of the radial adjustment screw.