Inner supporting tool suitable for thin-wall cylinder section

Abstract

The utility model provides an inner supporting tool suitable for a thin-wall cylinder section. The inner supporting tool comprises a sealing ring and at least one inner supporting block. The radial outer side face of the inner supporting block is matched with the radial inner side face of the cylinder section, the sealing ring is arranged on the radial outer side face of the inner supporting block, and the sealing ring is used for supporting the inner wall of the cylinder section in the circumferential direction of the cylinder section after inflation. The inner supporting tool can reduce the requirement for the working space, the quality and the cost, and is high in adaptability.

Description

Technical Field

[0001] The utility model relates to the field of launch vehicle storage tanks, in particular to an inner support tool suitable for thin-walled cylinder sections. Background Art

[0002] During the assembly and welding of thin-walled barrel sections (such as launch vehicle fuel tanks), it is usually necessary to support the inner wall. At present, the commonly used tooling for the inner support of thin-walled barrel sections is to evenly arrange the inner support blocks on a fixed platform, and then push the inner support blocks outward in the radial direction to support the barrel section through cylinder drive or manual adjustment of the screw nut auxiliary structure. The advantages of this tooling form are that the whole is fixed and the structure is stable. When using this tooling to support the barrel section, there must be no obstacles in the entire inner support plane, and the working space requirements are high. Therefore, it is only suitable for scenes where the end face of the barrel section is not sealed. The scope of application is narrow, and the tooling is heavy and the cost is high.

[0003] In order to improve the adaptability of tooling and reduce its mass, it is particularly important to design an internal support tooling suitable for thin-walled cylinder sections. Utility Model Content

[0004] The utility model aims to overcome the deficiencies of the prior art and provide an inner support tool suitable for thin-walled cylinder sections.

[0005] The utility model provides an inner support tooling suitable for thin-walled barrel sections, comprising: a sealing ring and at least one inner support block; the radial outer side surface of the inner support block is adapted to the radial inner side surface of the barrel section, the sealing ring is arranged on the radial outer side surface of the inner support block, and the sealing ring is used to support the inner wall of the barrel section along the circumferential direction of the barrel section after inflation.

[0006] According to an embodiment of the utility model, a groove along the circumferential direction is provided on the radial outer side surface of the inner support block, and the groove is used to place the sealing ring.

[0007] According to an embodiment of the utility model, a plurality of the inner support blocks are included, and the plurality of the inner support blocks are sequentially spliced ​​to form a structure whose radial outer side surface is adapted to the radial inner side surface of the barrel section; and the plurality of the inner support blocks are detachably connected to each other.

[0008] According to one embodiment of the utility model, a T-shaped wedge block is arranged between adjacent inner support blocks; the vertical rod of the T-shaped wedge block is arranged between adjacent inner support blocks, and the two ends of the horizontal rod of the T-shaped wedge block are respectively connected to the radial inner side surfaces of adjacent inner support blocks.

[0009] According to an embodiment of the utility model, a short connecting rod is arranged between the radial inner side surfaces of adjacent inner support blocks to increase the rigidity of the inner support tooling.

[0010] According to an embodiment of the utility model, the short connecting rod is retractable to adaptively connect adjacent inner support blocks.

[0011] According to an embodiment of the utility model, joint bearings are respectively arranged at both ends of the short connecting rod, the short connecting rod and the joint bearings are threadedly connected, and the joint bearings are rotatably connected to the inner support block.

[0012] According to an embodiment of the utility model, the number of the plurality of inner support blocks is four or more, and a long connecting rod is arranged between the radial inner side surfaces of two inner support blocks spaced apart from each other to increase the rigidity of the inner support tooling.

[0013] According to an embodiment of the utility model, heat insulation cotton is arranged on the radial outer side of the sealing ring to insulate the sealing ring.

[0014] According to one embodiment of the utility model, it also includes a gas storage tank for storing gas, and the gas storage tank is connected to the sealing ring to inflate the sealing ring; a pressure regulating valve is arranged between the gas storage tank and the sealing ring, and the internal supporting force of the sealing ring on the radial inner side surface of the barrel section is adjusted by controlling the inflation amount of the sealing ring.

[0015] According to the internal support tooling suitable for thin-walled barrel sections of the utility model, the internal support block provides rigid support for the sealing ring, and then the inflated sealing ring supports the inner wall of the barrel section, which saves space and has strong adaptability, and can effectively provide internal support for the rocket tank barrel section.

[0016] It should be understood that the above general description and the following specific embodiments are only exemplary and illustrative and are not intended to limit the scope of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The following drawings are a part of the specification of the present utility model, which illustrate exemplary embodiments of the present utility model. The attached drawings and the description of the specification are used to explain the principle of the utility model.

[0018] Figure 1 It is a three-dimensional diagram of an inner support tooling applicable to a thin-walled cylinder section according to an embodiment of the utility model;

[0019] Figure 2 This is a schematic diagram of the connection between the inner support block and the sealing ring in one embodiment of the utility model;

[0020] Figure 3 yes Figure 1 A is an enlarged view of the middle image.

[0021] Description of reference numerals:

[0022] 1-sealing ring; 2-inner support block; 3-groove; 4-T-shaped wedge block; 5-short connecting rod; 6-long connecting rod; 7-connecting block. DETAILED DESCRIPTION

[0023] The features and exemplary embodiments of various aspects of the present invention will be described in detail below. In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only configured to explain the present invention and are used to illustrate the principles of the present invention, and are not configured to limit the present invention. In addition, the structural components in the drawings are not necessarily drawn to scale. For example, the sizes of some structural components or areas in the drawings may be enlarged for other structural components or areas to help understand the embodiments of the present invention.

[0024] The directional words appearing in the following description are all directions shown in the figures, and do not limit the specific structure of the embodiments of the utility model. In the description of the utility model, it should be noted that, unless otherwise specified, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the utility model can be understood according to the specific circumstances.

[0025] In addition, the terms "include", "comprise", "have" or any other variations thereof are intended to cover non-exclusive inclusion, so that a structure or component including a series of elements includes not only those elements, but also other mechanical elements that are not explicitly listed or inherent in the structure or component. In the absence of more restrictions, the elements defined by the sentence "include..." do not exclude the existence of other identical elements in the article or device including the elements.

[0026] Spatially related terms such as "below", "beneath", "under", "low", "above", "on", "high", etc. are used to facilitate description to explain the positioning of one element relative to a second element, indicating that these terms are intended to cover different orientations of the device in addition to orientations different from those shown in the figures. In addition, for example, "one element is above / below another element" can mean that the two elements are in direct contact, or that there are other elements between the two elements. In addition, terms such as "first", "second", etc. are also used to describe various elements, regions, parts, etc., and do not specifically refer to the meaning of order or sequence, and should not be regarded as limiting. Similar terms are used throughout the description to represent similar elements.

[0027] In the process of describing the present utility model below, in certain scene descriptions, only "rocket", "launch vehicle", "spacecraft", "space launch vehicle" or "missile" may be used. This is only for the convenience of description, and its connotation is not limited to the specific words used. Generally, the launch vehicle of the present utility model includes not only space launch vehicles used to carry satellites or spacecraft or other probes, but also various types of missiles, rockets and other weapons used to carry military payloads, as well as similar products that can send payloads into the air. When interpreting the above specific words, those skilled in the art shall not limit the launch vehicle to only one of a rocket or a missile based on the specific words used to describe the scene, thereby narrowing the scope of protection of the present utility model.

[0028] For those skilled in the art, the present invention can be implemented without some of these specific details. The following description of the embodiments is only intended to provide a better understanding of the present invention by showing examples of the present invention.

[0029] Figure 1 It is a three-dimensional diagram of an inner support tooling applicable to a thin-walled cylinder section according to an embodiment of the utility model; Figure 2 This is a schematic diagram of the connection between the inner support block and the sealing ring in one embodiment of the utility model; Figure 3 yes Figure 1 A is an enlarged view of the middle image.

[0030] like Figure 1 As shown, the utility model provides an inner support tooling suitable for thin-walled barrel sections, comprising: a sealing ring 1 and at least one inner support block 2. The radial outer side surface of the inner support block 2 is adapted to the radial inner side surface of the barrel section, and the sealing ring 1 is arranged on the radial outer side surface of the inner support block 2. The sealing ring 1 is used to support the inner wall of the barrel section along the circumferential direction of the barrel section after inflation.

[0031] Specifically, the existing fixed internal support tooling usually adopts mechanical adjustment type internal support, which is time-consuming and labor-intensive, and it is not easy to accurately adjust the internal support force. If the form of manually adjusting the screw nut substructure is adopted, the internal support force is completely controlled manually, and it is difficult to control the adjustment accuracy of the internal support force. In addition, for large diameter barrel sections (such as launch vehicle fuel tanks), the existing fixed internal support tooling weighs tons, is heavy, and the tooling occupies a large space, which is not suitable for the internal support of barrel sections at the common bottom of launch vehicle fuel tanks and tanks with sealed ends.

[0032] The internal support tooling provided in this embodiment has an internal support block that rigidly supports the sealing ring, and supports the inner wall of the barrel section by inflating the sealing ring. Under the premise of achieving effective internal support for the inner wall of the barrel section, the occupied space is reduced, the requirements for the working space are reduced, and this internal support tooling is light in weight and low in cost. The internal support tooling can be applied to various internal support toolings and has strong adaptability. For example, the internal support tooling can be applied to the internal support of large-diameter barrel sections (such as the internal support of launch vehicle fuel tanks) and the internal support of barrel sections at the common bottom of launch vehicle fuel tanks. In addition, compared with the common internal support tooling with an umbrella-shaped skeleton in the middle, the internal support tooling does not occupy the middle space.

[0033] like Figure 2 As shown, according to one embodiment of the utility model, a groove 3 along the circumferential direction is provided on the radial outer side surface of the inner support block 2, and the groove 3 is used to place the sealing ring 1.

[0034] In this embodiment, the shapes of the inner support block and the sealing ring can be adjusted according to the shape of the radial inner wall of the barrel section to effectively support the inner wall of the barrel section. For example, for the inner support of the annular barrel section, the sealing ring can be an annular sealing ring, which can be embedded in the groove to improve the sealing effect.

[0035] According to an embodiment of the utility model, a plurality of inner support blocks 2 are included. The plurality of inner support blocks 2 are sequentially spliced ​​to form a structure whose radial outer side surface is adapted to the radial inner side surface of the barrel section. The plurality of inner support blocks 2 are detachably connected to each other.

[0036] Specifically, for example, when producing a launch vehicle fuel tank, it may be necessary to assemble and weld the barrel section that has been processed into a semi-closed end, leaving only a maintenance hole of about φ500mm at both ends of the barrel section. In this embodiment, the size and number of the inner support blocks can be reasonably set according to the diameter of the barrel section and the size of the openings at both ends. For example, the number of inner support blocks can be reduced as much as possible to reduce the workload of disassembly and assembly of the inner support tooling, thereby improving production efficiency. In addition, the style of the inner support block can be designed according to the shape of the radial inner side surface of the barrel section (such as an annular, polygonal or irregular cross-sectional shape) so that the tooling can adapt to the inner support of barrel sections of different types or shapes through reasonable splicing. For example, for an annular barrel section (such as a rocket tank barrel section), multiple inner support blocks can be spliced ​​to form an annular inner support skeleton to provide support for the setting of an annular sealing ring, so as to complete the support of the inner side of the annular barrel section through the annular inner support skeleton in conjunction with the annular sealing ring.

[0037] The inner support tooling of this embodiment changes the traditional fixed type into a quick disassembly type, which is convenient for entering and exiting the barrel section. The inner support tooling of this application can adapt to the inner support of a large diameter barrel section with a small inlet and outlet through a reasonable layout of the inner support blocks.

[0038] like Figure 3As shown, according to one embodiment of the utility model, a T-shaped wedge block 4 is arranged between adjacent inner support blocks 2. The vertical rod of the T-shaped wedge block 4 is arranged between adjacent inner support blocks 2, and the two ends of the cross rod of the T-shaped wedge block 4 are respectively connected to the radial inner side surfaces of adjacent inner support blocks.

[0039] The internal support tooling provided in this embodiment can be quickly disassembled and assembled, which can greatly improve production efficiency, and manual operation is more convenient and safer.

[0040] According to an embodiment of the present utility model, a short connecting rod 5 is arranged between the radial inner side surfaces of adjacent inner support blocks 2 to increase the rigidity of the inner support tooling.

[0041] In this embodiment, when the sealing ring is inflated and the inner support force is applied to the barrel section, the inner support frame (such as an annular inner support frame) formed by the inner support block will also bear the radial inward reverse force. The inner support tooling can enhance the rigidity of the inner support frame (such as an annular inner support frame) and increase the bearing capacity of the inner support tooling by arranging a short connecting rod between the radial inner sides of adjacent inner support blocks. In addition, the two ends of the short connecting rod can be connected to the inner support block by a quick plug-in pin, thereby improving the disassembly and assembly efficiency of the inner support tooling.

[0042] According to an embodiment of the present invention, the short connecting rod 5 is retractable to adaptively connect adjacent inner support blocks 2 .

[0043] According to an embodiment of the utility model, joint bearings are respectively arranged at both ends of the short connecting rod 5 , the short connecting rod 5 is threadedly connected to the joint bearings, and the joint bearings are rotatably connected to the inner support block 2 .

[0044] The inner support fixture provided in this embodiment can adaptively connect two adjacent inner support blocks by adjusting the position between the short connecting rod and the joint bearing. The joint bearing and the inner support block can be rotatably connected by a plug-in pin to improve the disassembly and assembly efficiency of the inner support fixture.

[0045] According to an embodiment of the present invention, the number of the plurality of inner support blocks 2 is four or more, and a long connecting rod 6 is provided between the radial inner sides of two inner support blocks 2 spaced apart from each other to increase the rigidity of the inner support tooling.

[0046] The inner support fixture provided in this embodiment has a long connecting rod arranged between the radial inner sides of the two inner support blocks spaced apart from each other, which can enhance the rigidity of the annular inner support skeleton formed by the inner support blocks and increase the bearing capacity of the inner support fixture. The two ends of the long connecting rod can be connected to the radial inner sides of the inner support blocks by quick plug-in pins to improve the disassembly and assembly efficiency of the inner support fixture.

[0047] In addition, in order to reduce the mass of the internal support tooling while effectively supporting the barrel section, some of the internal support blocks that are spaced apart from each other can be selected and connected using long connecting rods. For example, a ring-shaped internal support skeleton is formed by splicing 24 internal support blocks, and 12 internal support blocks can be evenly selected, and each internal support block is connected to the internal support blocks spaced 3 blocks apart from it in sequence using long connecting rods. Specifically, internal support blocks No. 1 to No. 24 are spliced ​​in sequence to form a ring-shaped internal support skeleton. Twelve internal support blocks No. 1, 3, 5...23 are selected, and the No. 1 internal support block is connected to the No. 5 internal support block using a long connecting rod, the No. 3 internal support block is connected to the No. 7 internal support block using a long connecting rod,..., the No. 23 internal support block is connected to the No. 3 internal support block. The internal support tooling of the present application adopts a connection method in which some of the internal support blocks are provided with long connecting rods, so that the annular internal support skeleton can make way for the annular center space, thereby reducing interference with the internal structure of the barrel section and the requirements for the working space.

[0048] like Figure 3 As shown, according to one embodiment of the utility model, the long connecting rod 6 can be connected to the inner support block 2 through the connecting block 7. The connection between the connecting block 7 and the inner support block 2 can be detachably connected (such as screw connection). In addition, for example, in the case where the annular inner support skeleton is formed by splicing 24 inner support blocks, multiple long connecting rods will cross each other. By adjusting the connection position of different long connecting rods and the connecting block 7 or the connection position of the connecting block and the inner support block, a height difference can be formed between different long connecting rods, so that the crossed long connecting rods can be smoothly connected and form a support.

[0049] According to an embodiment of the utility model, a heat insulating layer is arranged on the radial outer side of the sealing ring. For example, the heat insulating layer can be arranged on the radial outer side of the sealing ring by applying or pasting, or form a composite material with the sealing ring.

[0050] According to an embodiment of the utility model, heat insulation cotton is arranged on the radial outer side of the sealing ring 1 to insulate the sealing ring 1.

[0051] According to one embodiment of the utility model, in addition to the sealing ring 1 and at least one inner support block 2, the inner support tooling also includes a gas storage tank for storing gas. The gas storage tank is connected to the sealing ring 1 to inflate the sealing ring 1. A pressure regulating valve is arranged between the gas storage tank and the sealing ring 1, and the supporting force of the sealing ring 1 on the radial inner side surface of the barrel section is adjusted by controlling the inflated amount of the sealing ring 1.

[0052] In this embodiment, the gas storage tank can be a high-pressure storage tank, and the pressure regulating valve can be an external valve. The internal support tool can use high-pressure gas internal support, and the internal support force is applied to the cylinder section by injecting high-pressure gas into the sealing ring, which is fast and convenient to operate. In addition, the internal support tool can accurately adjust the size of the internal support force through the pressure regulating valve according to the set air pressure value. The sealing ring can be provided with a gas nozzle, and the gas storage tank inflates the sealing ring through the gas nozzle.

[0053] The process flow of using the internal support tooling of the utility model to internally support the cylinder section is as follows:

[0054] S01: Place the sealing ring in the groove of the inner support block, and install and lock the inner support block in sequence;

[0055] S02: Use quick-release pins to install the short connecting rods in sequence;

[0056] S03: Use quick-release pins to install the long connecting rods in sequence;

[0057] S04: Inflate the sealing ring, so that the sealing ring expands radially outward and applies an internal support force to the barrel section.

[0058] The above-mentioned embodiments of the present invention can be combined with each other and have corresponding technical effects.

[0059] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An internal support tooling suitable for thin-walled cylinder sections, It is characterized in that include: A sealing ring and at least one inner support block; the radial outer side surface of the inner support block is adapted to the radial inner side surface of the barrel section, the sealing ring is arranged on the radial outer side surface of the inner support block, and the sealing ring is used to support the inner wall of the barrel section along the circumferential direction of the barrel section after inflation.

2. The inner support tooling according to claim 1, It is characterized in that A groove along the circumferential direction is provided on the radial outer side surface of the inner support block, and the groove is used for accommodating the sealing ring.

3. The inner support tooling according to claim 1, It is characterized in that It comprises a plurality of inner support blocks, which are sequentially spliced ​​to form a structure whose radial outer side surface is adapted to the radial inner side surface of the barrel section; and the plurality of inner support blocks are detachably connected to each other.

4. The inner support tooling according to claim 3, It is characterized in that T-shaped wedge blocks are arranged between adjacent inner support blocks; the vertical rods of the T-shaped wedge blocks are arranged between adjacent inner support blocks, and the two ends of the cross rods of the T-shaped wedge blocks are respectively connected to the radial inner side surfaces of adjacent inner support blocks.

5. The inner support tooling according to claim 3, It is characterized in that A short connecting rod is arranged between the radial inner side surfaces of adjacent inner support blocks to increase the rigidity of the inner support tooling.

6. The inner support tooling according to claim 5, It is characterized in that The short connecting rod is retractable to adaptively connect the adjacent inner support blocks.

7. The inner support tooling according to claim 6, It is characterized in that Joint bearings are respectively arranged at both ends of the short connecting rod. The short connecting rod is threadedly connected to the joint bearings, and the joint bearings are rotatably connected to the inner support block.

8. The inner support tooling according to claim 3, It is characterized in that The number of the plurality of inner support blocks is four or more, and a long connecting rod is arranged between the radial inner side surfaces of two inner support blocks spaced apart from each other to increase the rigidity of the inner support tooling.

9. The inner support tooling according to claim 1, It is characterized in that Heat insulation cotton is arranged on the radial outer side of the sealing ring to insulate the sealing ring.

10. The inner support tooling according to claim 1, It is characterized in that It also includes a gas storage tank for storing gas, which is connected to the sealing ring to inflate the sealing ring; a pressure regulating valve is arranged between the gas storage tank and the sealing ring to adjust the internal supporting force of the sealing ring on the radial inner side surface of the barrel section by controlling the inflation amount of the sealing ring.

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