A method and device for forming a multi-stage cabin

Abstract

The present invention discloses a multi-segment cabin forming method and device, wherein the method comprises: S101, installing a boss on the outer side of a spherical head to obtain a spherical bulkhead; S102, numbering all segmented cabins in sequence, and respectively welding spherical bulkheads at both ends of odd-numbered segmented cabins to obtain odd-numbered welded segmented cabins; S103, respectively performing external water pressure tests on all odd-numbered welded segmented cabins, and when all odd-numbered welded segmented cabins meet the external water pressure test, entering S104; S104, welding even-numbered segmented cabins between all odd-numbered welded segmented cabins in the order of numbers to obtain a combined cabin; S105, performing an external water pressure test on the combined cabin, and when the combined cabin meets the external water pressure test, a target sealed cabin is obtained. The method improves the precision of segmented shell docking and effectively controls the problems of large welding volume and shell welding deformation caused by internal fillet welding.

Description

Technical Field

[0001] The present invention relates to the technical field of cabin body processing, and in particular to a method and device for forming a multi-segment cabin body. Background Art

[0002] The buoyancy tank is one of the important components of underwater vehicles. The material of the tank is high-strength, corrosion-resistant titanium alloy. The buoyancy tank is composed of multiple segmented tanks, each of which is composed of two spherical heads and a thin-walled shell. After the buoyancy tank is welded, the overall straightness is required to achieve a shape and position tolerance of less than 3mm, and each segmented tank must be subjected to an external water pressure test after welding. After the overall formation, an external water pressure test is required, requiring no leakage and no deformation.

[0003] The original process method is to segment the main cabin near the spherical head, that is, not at the spherical head, and each segmented cabin needs to be positioned by a matching welding ring when assembling the segments, and then each spherical head is welded to each segmented shell by manual argon arc welding. Due to the high melting point and large heat capacity of titanium alloy, the molten pool size is large and the temperature is high during welding, and the welding position is an acute angle. When welding, the acute angle position needs to be filled first, and then the fillet weld is welded. Therefore, the welding heat input of the welding forming method with fusion welding bevel is large, and the weld quality and joint mechanical properties are difficult to meet the requirements, and it is easy to cause serious deformation, which makes it difficult to guarantee the overall shape and position tolerance.

[0004] Currently, no effective solution has been proposed for the problem that the multi-stage shell forming method in the prior art has large welding heat input, the weld quality and the joint mechanical properties are difficult to meet the requirements, and it is easy to cause serious deformation, which makes it difficult to ensure the overall shape and position tolerances. Summary of the invention

[0005] A multi-stage cabin forming method and device are provided in an embodiment of the present invention to solve the problem that the multi-stage shell forming method in the prior art has large welding heat input, the weld quality and the joint mechanical properties are difficult to meet the requirements, and it is easy to cause serious deformation, which makes it difficult to ensure the overall shape and position tolerances.

[0006] To achieve the above-mentioned purpose, on the one hand, the present invention provides a method for forming a multi-segment cabin, which method includes: S101, installing a boss on the outer side surface of the spherical head to obtain a spherical bulkhead; S102, numbering all the segmented cabins in sequence, and respectively welding the spherical bulkhead plates at both ends of the odd-numbered segmented cabins to obtain odd-numbered welded segmented cabins; S103, subjecting all the odd-numbered welded segmented cabins to external water pressure tests, and when all the odd-numbered welded segmented cabins meet the external water pressure test, proceeding to S104; S104, welding even-numbered segmented cabins between all the odd-numbered welded segmented cabins in the order of numbers to obtain a combined cabin; S105, subjecting the combined cabin to an external water pressure test, and when the combined cabin meets the external water pressure test, a target sealed cabin is obtained.

[0007] Optionally, before S102, the step includes: segmenting the integral cabin body to be processed at the location where the spherical head is installed to obtain a plurality of segmented cabin bodies.

[0008] Optionally, the boss includes a first annular body and a second annular body; two sides of the first annular body are respectively welded to the segmented cabin body, and the welding is electron beam welding; the inner side surface of the second annular body is fixedly connected to the outer side surface of the spherical head.

[0009] Optionally, the thickness of the first annular body is equal to the thickness of the segmented cabin body; and the width of the second annular body is greater than the width of the first annular body.

[0010] Optionally, the step of segmenting the integral cabin body to be processed at the location where the spherical head is installed to obtain a plurality of segmented cabin bodies comprises: segmenting the integral cabin body to be processed at the location where the spherical head is installed to obtain a plurality of segmented cabin bodies to be processed; welding reinforcing ribs to each segmented cabin body to be processed; opening a hole seat in each segmented cabin body to be processed after the reinforcing ribs are welded; and processing the hole seat of each segmented cabin body to be processed after the hole seat is opened to obtain the plurality of segmented cabin bodies.

[0011] On the other hand, the present invention provides a multi-segment cabin forming device, which includes: an installation unit, which is used to install a boss on the outer side of the spherical head to obtain a spherical bulkhead plate; a welding unit, which is used to number all the segmented cabins in sequence, and respectively weld the spherical bulkhead plates at both ends of the odd-numbered segmented cabins to obtain odd-numbered welded segmented cabins; a first testing unit, which is used to perform an external water pressure test on all the odd-numbered welded segmented cabins, and when all the odd-numbered welded segmented cabins meet the external water pressure test, enter the segment assembling unit; a segment assembling unit, which is used to weld even-numbered segmented cabins between all the odd-numbered welded segmented cabins in the order of numbers to obtain a assembled cabin; a second testing unit, which is used to perform an external water pressure test on the assembled cabin, and when the assembled cabin meets the external water pressure test, a target sealed cabin is obtained.

[0012] Optionally, a segmentation unit is used to segment the integral cabin to be processed at the location where the spherical head is installed to obtain a plurality of segmented cabins.

[0013] Optionally, the boss includes a first annular body and a second annular body; two sides of the first annular body are respectively welded to the segmented cabin body, and the welding is electron beam welding; the inner side surface of the second annular body is fixedly connected to the outer side surface of the spherical head.

[0014] Optionally, the thickness of the first annular body is equal to the thickness of the segmented cabin body; and the width of the second annular body is greater than the width of the first annular body.

[0015] Optionally, the segmentation unit includes: a segmentation sub-unit, used to segment the overall cabin body to be processed at the installation location of the spherical head, to obtain a plurality of segmented cabin bodies to be processed; a welding sub-unit, used to weld reinforcing ribs to each segmented cabin body to be processed; a hole opening sub-unit, used to open a hole seat for each segmented cabin body to be processed after the reinforcing ribs are welded; and a processing sub-unit, used to process the hole seat of each segmented cabin body to be processed after the hole seat is opened, to obtain the plurality of segmented cabin bodies.

[0016] Beneficial effects of the present invention:

[0017] The present invention provides a multi-segment cabin forming method and device. According to the method, a boss is installed on the outer side surface of a spherical head to obtain a spherical bulkhead plate, which can replace the welding ring structure, improve the docking accuracy of the segmented shell, and increase the assembly accuracy of the spherical bulkhead plate and the segmented shell; according to the method, the inner corner weld is moved outward, and the outer ring weld is welded by vacuum electron beam, which effectively controls the problems of large welding volume and shell welding deformation caused by the inner corner weld, thereby ensuring the shape and position tolerance after the overall welding; according to the method, the spherical bulkhead plates are first welded at both ends of the odd-numbered segmented cabin, and then the even-numbered segmented cabins are welded in the order of the numbers to obtain the combined cabin; the number of pressure tests of the external water pressure test is ensured to be minimal, and the excessive number of pressure tests of a single segmented shell is effectively avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic structural diagram of a spherical head welded to a segmented cabin in the prior art provided by an embodiment of the present invention;

[0019] Figure 2 It is a partial schematic diagram of a spherical head welded to a segmented cabin in the prior art provided by an embodiment of the present invention;

[0020] Figure 3 It is a structural schematic diagram of a spherical bulkhead provided by an embodiment of the present invention;

[0021] Figure 4 is a flow chart of a multi-stage cabin forming method provided by an embodiment of the present invention;

[0022] Figure 5 It is a structural schematic diagram of a multi-stage cabin forming device provided in an embodiment of the present invention.

[0023] Explanation of symbols:

[0024] Equipped with welding ring-1, segmented cabin-2, spherical head-3, boss-4. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical scheme and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] Figure 1 It is a structural schematic diagram of a spherical head 3 welded to a segmented cabin 2 in the prior art provided by an embodiment of the present invention; Figure 2 FIG. 1 is a partial schematic diagram of a spherical head 3 welded to a segmented cabin 2 in the prior art provided by an embodiment of the present invention; Figure 1 and Figure 2 As shown, the original process method is to segment the main cabin near the spherical head 3, that is, not at the spherical head 3, and each segmented cabin 2 needs to be positioned by the welding ring 1 when the segmented cabin 2 is assembled, and then each spherical head 3 is welded to each segmented shell by manual argon arc welding. Due to the high melting point and large heat capacity of titanium alloy, the molten pool size is large and the temperature is high during welding, and the welding position is an acute angle. When welding, the acute angle position needs to be filled first, and then the fillet weld is welded. Therefore, the welding heat input of the welding forming method with fusion welding groove is large, and the weld quality and joint mechanical properties are difficult to meet the requirements, and it is easy to cause serious deformation, which makes it difficult to ensure the overall shape and position tolerance.

[0027] Therefore, the present invention provides a multi-stage cabin forming method, Figure 4 is a flow chart of a multi-stage cabin forming method provided by an embodiment of the present invention, such as Figure 4 As shown, the method includes:

[0028] S101, installing a boss 4 on the outer side of the spherical head 3 to obtain a spherical bulkhead;

[0029] Before S102, the process includes: segmenting the integral cabin body to be processed at the location where the spherical head 3 is installed to obtain a plurality of segmented cabin bodies 2 (the present invention divides the integral cabin body to be processed with a length of about 9000 mm into nine segments).

[0030] The whole cabin body to be processed is segmented at the location where the spherical head 3 is installed to obtain a plurality of segmented cabin bodies 2, including:

[0031] The whole cabin body to be processed is segmented at the installation location of the spherical head 3 to obtain a plurality of segmented cabin bodies 2 to be processed; reinforcing ribs are welded to each segmented cabin body 2 to be processed; a hole seat is opened in each segmented cabin body 2 to be processed after the reinforcing ribs are welded; the hole seat of each segmented cabin body 2 to be processed after the hole seat is opened is processed to obtain the plurality of segmented cabin bodies 2.

[0032] Figure 3 Schematic diagram of the structure of the spherical bulkhead provided by the embodiment of the present invention. Figure 3 As shown, the boss 4 includes a first annular body and a second annular body; the two sides of the first annular body are respectively welded to the segmented cabin body 2, and the thickness of the first annular body is equal to the thickness of the segmented cabin body 2; the welding is electron beam welding (in order to utilize electron beam welding to dock the interface structure, it is necessary to simultaneously meet the welding requirements of electron beam welding, that is, the docking gap ≤0.25, the misalignment ≤0.3, and the end surface roughness ≤3.2), and the annular weld after the spherical head 3 and the segmented cabin body 2 are docked by electron beam welding, and the welding positions are in a line, thereby reducing the welding heat input and achieving the purpose of improving the weld quality and welding efficiency; the inner side surface of the second annular body is fixedly connected to the outer side surface of the spherical head 3, and the width of the second annular body is greater than the width of the first annular body.

[0033] S102, all the segmented cabins 2 are numbered in sequence, and the spherical bulkhead plates are respectively welded to both ends of the odd-numbered segmented cabins 2 to obtain odd-numbered welded segmented cabins 2;

[0034] Specifically, in the present invention, the two ends of the segmented cabins 2 numbered 1, 3, 5, and 7 are respectively welded with the spherical bulkhead plates to obtain welded segmented cabins 2 numbered 1, 3, 5, and 7.

[0035] S103, all odd-numbered welded segmented cabins 2 are subjected to external water pressure tests respectively. When all odd-numbered welded segmented cabins 2 meet the external water pressure test, enter S104;

[0036] The welded segmented cabins 2 numbered 1, 3, 5, and 7 are subjected to external water pressure tests respectively, that is, the welded segmented cabins 2 are pressed with a preset pressure and the pressure is maintained for a preset time. If there is no leakage, it means that the welded segmented cabins 2 meet the external water pressure test. When the welded segmented cabins 2 numbered 1, 3, 5, and 7 all meet the external water pressure test, enter S104.

[0037] S104, welding the even-numbered segmented cabins 2 among all the odd-numbered welded segmented cabins 2 in numerical order to obtain a combined cabin;

[0038] The segmented cabin 2 with number 2 is welded between the segmented cabins 2 with number 1 and 3, and an external water pressure test is carried out after the welding is completed; when the external water pressure test is satisfied, the segmented cabin 2 with number 4 is welded after the segmented cabins 2 with number 1, 2 and 3 are assembled, and an external water pressure test is carried out after the welding is completed.

[0039] At the same time, the segmented cabin 2 with number 6 is welded between the segmented cabins 2 with number 5 and 7, and an external water pressure test is carried out after the welding is completed; when the external water pressure test is satisfied, the segmented cabins 2 with number 8 and 9 are welded after the segmented cabins 2 with number 5, 6 and 7 are assembled, and an external water pressure test is carried out after the welding is completed.

[0040] When the segmented cabins 2 with numbers 1, 2, 3, and 4 meet the external water pressure test after being combined, and the segmented cabins 2 with numbers 5, 6, 7, 8, and 9 meet the external water pressure test after being combined. Combine the segmented cabins 2 with numbers 1, 2, 3, and 4 and the segmented cabins 2 with numbers 5, 6, 7, 8, and 9 to obtain a combined cabin.

[0041] S105, subjecting the assembled cabin to an external water pressure test. When the assembled cabin meets the external water pressure test, a target sealed cabin is obtained.

[0042] Through design, spherical bulkhead plates are first welded on both ends of the odd-numbered segmented cabin 2, and then the even-numbered segmented cabin 2 is welded in order of number to obtain a combined cabin; ensuring the minimum number of pressure tests for the external water pressure test, effectively avoiding excessive pressure tests for a single segmented shell.

[0043] Figure 5 is a schematic structural diagram of a multi-stage cabin forming device provided by an embodiment of the present invention, such as Figure 5 As shown, the device comprises:

[0044] The mounting unit 201 is used to mount the boss 4 on the outer side of the spherical head 3 to obtain a spherical bulkhead;

[0045] It also includes: a segmentation unit, which is used to segment the entire cabin body to be processed at the location where the spherical head 3 is installed to obtain a plurality of segmented cabin bodies 2.

[0046] The segmentation unit comprises:

[0047] The segmentation subunit is used to segment the whole cabin body to be processed at the installation position of the spherical head 3 to obtain a plurality of segmented cabin bodies 2 to be processed;

[0048] A welding subunit is used to weld reinforcing ribs to each segmented cabin 2 to be processed;

[0049] A hole opening sub-unit is used to open a hole seat on each segmented cabin 2 to be processed after the reinforcement ribs are welded;

[0050] The processing subunit is used to process the hole seat of each segmented cabin body 2 to be processed after the hole seat is opened, so as to obtain the multiple segmented cabin bodies 2.

[0051] Figure 3 Schematic diagram of the structure of the spherical bulkhead provided by the embodiment of the present invention. Figure 3 As shown, the boss 4 includes a first annular body and a second annular body; the two sides of the first annular body are respectively welded to the segmented cabin body 2, and the thickness of the first annular body is equal to the thickness of the segmented cabin body 2; the welding is electron beam welding (in order to utilize electron beam welding to dock the interface structure, it is necessary to simultaneously meet the welding requirements of electron beam welding, that is, the docking gap ≤0.25, the misalignment ≤0.3, and the end surface roughness ≤3.2), and the annular weld after the spherical head 3 and the segmented cabin body 2 are docked by electron beam welding, and the welding positions are in a line, thereby reducing the welding heat input and achieving the purpose of improving the weld quality and welding efficiency; the inner side surface of the second annular body is fixedly connected to the outer side surface of the spherical head 3, and the width of the second annular body is greater than the width of the first annular body.

[0052] The welding unit 202 is used to number all the segmented cabins 2 in sequence, and weld the spherical bulkheads at both ends of the odd-numbered segmented cabins 2 to obtain the odd-numbered welded segmented cabins 2;

[0053] Specifically, in the present invention, the two ends of the segmented cabins 2 numbered 1, 3, 5, and 7 are respectively welded with the spherical bulkhead plates to obtain welded segmented cabins 2 numbered 1, 3, 5, and 7.

[0054] The first testing unit 203 is used to perform external water pressure tests on all odd-numbered welded segmented cabins 2. When all odd-numbered welded segmented cabins 2 meet the external water pressure test, they enter the segment closing unit 204.

[0055] The welded segmented cabins 2 numbered 1, 3, 5, and 7 are subjected to external water pressure tests respectively, that is, the welded segmented cabins 2 are pressed with a preset pressure and the pressure is maintained for a preset time. If there is no leakage, it means that the welded segmented cabins 2 meet the external water pressure test. When the welded segmented cabins 2 numbered 1, 3, 5, and 7 all meet the external water pressure test, the assembly unit 204 is entered.

[0056] The segment assembly unit 204 is used to assemble and weld the even-numbered segmented cabins 2 between all the odd-numbered assembled and welded segmented cabins 2 in numerical order to obtain an assembled segmented cabin;

[0057] The segmented cabin 2 with number 2 is welded between the segmented cabins 2 with number 1 and 3, and an external water pressure test is carried out after the welding is completed; when the external water pressure test is satisfied, the segmented cabin 2 with number 4 is welded after the segmented cabins 2 with number 1, 2 and 3 are assembled, and an external water pressure test is carried out after the welding is completed.

[0058] At the same time, the segmented cabin 2 with number 6 is welded between the segmented cabins 2 with number 5 and 7, and an external water pressure test is carried out after the welding is completed; when the external water pressure test is satisfied, the segmented cabins 2 with number 8 and 9 are welded after the segmented cabins 2 with number 5, 6 and 7 are assembled, and an external water pressure test is carried out after the welding is completed.

[0059] When the segmented cabins 2 with numbers 1, 2, 3, and 4 meet the external water pressure test after being combined, and the segmented cabins 2 with numbers 5, 6, 7, 8, and 9 meet the external water pressure test after being combined. Combine the segmented cabins 2 with numbers 1, 2, 3, and 4 and the segmented cabins 2 with numbers 5, 6, 7, 8, and 9 to obtain a combined cabin.

[0060] The second testing unit 205 is used to perform an external water pressure test on the assembled cabin body. When the assembled cabin body meets the external water pressure test, a target sealed cabin body is obtained.

[0061] Through design, spherical bulkhead plates are first welded on both ends of the odd-numbered segmented cabin 2, and then the even-numbered segmented cabin 2 is welded in order of number to obtain a combined cabin; ensuring the minimum number of pressure tests for the external water pressure test, effectively avoiding excessive pressure tests for a single segmented shell.

[0062] Beneficial effects of the present invention:

[0063] The present invention provides a multi-segment cabin forming method and device, in which a boss 4 is installed on the outer side surface of a spherical head 3 to obtain a spherical bulkhead plate, which can replace the welding ring 1 structure, improves the accuracy of the segmented shell docking, and increases the assembly accuracy of the spherical bulkhead plate and the segmented shell; the method moves the inner corner weld outward and adopts vacuum electron beam welding of the outer ring weld, effectively controlling the problems of large welding volume and shell welding deformation caused by the inner corner weld, thereby ensuring the shape and position tolerance after the overall welding; the method is designed to first weld the spherical bulkhead plates at both ends of the odd-numbered segmented cabin 2, and then weld the even-numbered segmented cabin 2 in the order of the numbers to obtain a combined cabin; ensure that the number of pressure tests of the external water pressure test is minimal, and effectively avoid excessive pressure tests of a single segmented shell.

[0064] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for forming a multi-stage cabin, characterized in that: include: S101, installing a boss on the outer side of the spherical head to obtain a spherical bulkhead; S102, all the segmented cabins are numbered in sequence, and the spherical bulkheads are respectively welded at both ends of the odd-numbered segmented cabins to obtain odd-numbered welded segmented cabins; S103, performing external water pressure tests on all odd-numbered welded section cabins respectively. When all odd-numbered welded section cabins meet the external water pressure test, proceed to S104; S104, welding the even-numbered segmented cabins among all the odd-numbered welded segmented cabins in numerical order to obtain a combined cabin; S105, subjecting the assembled cabin to an external water pressure test. When the assembled cabin meets the external water pressure test, a target sealed cabin is obtained.

2. The method according to claim 1, characterized in that Before S102, the method includes: The integral cabin body to be processed is segmented at the location where the spherical head is installed to obtain a plurality of segmented cabin bodies.

3. The method according to claim 1, characterized in that: The boss includes a first annular body and a second annular body; both sides of the first annular body are respectively welded to the segmented cabin body, and the welding is electron beam welding; the inner side surface of the second annular body is fixedly connected to the outer side surface of the spherical head.

4. The method according to claim 3, characterized in that: The thickness of the first annular body is equal to the thickness of the segmented cabin body; The width of the second annular body is greater than the width of the first annular body.

5. The method according to claim 2, characterized in that: The step of segmenting the integral cabin body to be processed at the location where the spherical head is installed to obtain a plurality of segmented cabin bodies comprises: The whole cabin to be processed is segmented at the location where the spherical head is installed to obtain a plurality of segmented cabins to be processed; Weld reinforcement ribs to each sectioned cabin to be processed; After the reinforcement ribs are welded, a hole seat is provided in each sectioned cabin to be processed; After the hole seat is opened, the hole seat of each segmented cabin body to be processed is processed to obtain the plurality of segmented cabin bodies.

6. A multi-stage cabin forming device, characterized in that: include: An installation unit is used to install a boss on the outer side of the spherical head to obtain a spherical bulkhead; The welding unit is used to number all the segmented cabins in sequence and weld the spherical bulkhead plates at both ends of the odd-numbered segmented cabins to obtain the odd-numbered welded segmented cabins; The first test unit is used to perform external water pressure tests on all odd-numbered welded block cabins respectively. When all odd-numbered welded block cabins meet the external water pressure test, they enter the section assembly unit; The assembling unit is used to assemble and weld even-numbered sectional cabins between all odd-numbered sectional cabins in numerical order to obtain an assembled sectional cabin; The second testing unit is used to carry out an external water pressure test on the assembled cabin body. When the assembled cabin body meets the external water pressure test, a target sealed cabin body is obtained.

7. The device according to claim 6, characterized in that Also includes: The segmentation unit is used to segment the integral cabin to be processed at the location where the spherical head is installed to obtain a plurality of segmented cabins.

8. The device according to claim 6, characterized in that: The boss includes a first annular body and a second annular body; both sides of the first annular body are respectively welded to the segmented cabin body, and the welding is electron beam welding; the inner side surface of the second annular body is fixedly connected to the outer side surface of the spherical head.

9. The device according to claim 8, characterized in that: The thickness of the first annular body is equal to the thickness of the segmented cabin body; The width of the second annular body is greater than the width of the first annular body.

10. The device according to claim 7, characterized in that The segmentation unit comprises: The segmentation subunit is used to segment the whole cabin to be processed at the location where the spherical head is installed, so as to obtain a plurality of segmented cabins to be processed; The welding sub-unit is used to weld the reinforcing ribs to each sectioned cabin to be processed; The hole opening sub-unit is used to open a hole seat on each sectioned cabin to be processed after the reinforcement ribs are welded; The processing subunit is used to process the hole seat of each segmented cabin body to be processed after the hole seat is opened, so as to obtain the multiple segmented cabin bodies.

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