A cabin section structure for verifying deformation coordination capability of a large floating raft vibration isolation system

Abstract

The application discloses a cabin section structure for verifying the deformation coordination capability of a large floating raft vibration isolation system, which comprises a pressure-resistant hull shell plate and a pressure-resistant hull rib, characterized in that the size of the pressure-resistant hull shell plate and the pressure-resistant hull rib is the same as the structure parameter of an actual ship; the cabin section structure further comprises an end-thickened pressure-resistant shell ring, an oversized rib and a floating raft base; the end-thickened pressure-resistant shell ring is arranged at both ends of the pressure-resistant hull shell plate; the oversized rib is arranged at both ends of the cabin section structure, and the distance between the two oversized ribs is the same as the distance between two bulkheads of an underwater vehicle; and the floating raft base is installed near the horizontal center line of the left and right sides of the pressure-resistant hull shell plate. The cabin section structure adopts the actual structure parameter of an actual ship, and the load condition is simulated by a large external pressure test device to be consistent with the actual load of the actual ship, so that the real deformation can be accurately generated, and the most direct basis for verifying the deformation compensation capability of the elastic components of the floating raft system under the limit depth is provided.

Description

Technical Field

[0001] This invention relates to the field of ship structure technology, and in particular to a compartment structure that can be used to verify the effectiveness of deformation coordination measures for a large-scale floating raft vibration isolation system. Background Technology

[0002] Large floating raft vibration isolation systems are a crucial means of controlling mechanical noise in underwater vehicles, and are used at all depths. Multiple devices with potential mechanical noise hazards are integrated onto the floating raft, and these devices are connected to the piping on the pressure hull via flexible connecting pipes with a certain deformation compensation capability. The large floating raft is elastically connected to the hull base via a lower-level vibration isolator, while the base is typically rigidly connected directly to the pressure hull. When the underwater vehicle dives to deep water, the hull structure experiences compression and contraction deformation, while the floating raft structure itself undergoes almost no deformation. This results in relative deformation between the hull and floating raft structures. This relative deformation can lead to reduced performance or even damage to elastic components such as the lower-level vibration isolator and flexible connecting pipes, thus affecting the safety of the vibration isolation system and the connecting piping. Furthermore, the non-uniform deformation of the hull structure is complex. Therefore, it is necessary to comprehensively verify the deformation coordination capability of the large floating raft vibration isolation system under actual deformation conditions with real-scale structural loads, and to verify the deformation compensation capability of the floating raft's elastic components at extreme depths.

[0003] In addition, with the development of test support conditions, the large-scale external pressure test device was delivered and put into use as planned, which enabled the conditions to carry out external pressure tests on full-scale cabin models of underwater vehicles.

[0004] In view of this, the present invention proposes a section structure for verifying the effectiveness of deformation coordination measures in a real-scale large-scale floating raft vibration isolation system. By conducting verification tests, the deformation compensation capability of the system's elastic components at extreme depths can be verified under real deformation conditions of real-scale section structure under real loads. Summary of the Invention

[0005] The main objective of this invention is to provide a compartment structure for verifying the deformation coordination capability of a large floating raft vibration isolation system. This compartment structure is designed to be tested in a large external pressure testing device, and can assess the deformation compensation capability of the floating raft elastic components at extreme depths under real deformation conditions with real loads on the actual-scale compartment structure.

[0006] The technical solution adopted in this invention is:

[0007] A compartment structure for verifying the deformation coordination capability of a large floating raft vibration isolation system includes a pressure hull plate and pressure hull ribs, the dimensions of which are the same as those of the actual ship structure. The compartment structure also includes end-thickened pressure hull rings, extra-large ribs, and a floating raft base. The end-thickened pressure hull rings are located at both ends of the pressure hull plate. The extra-large ribs are located at both ends of the compartment structure, and the distance between two extra-large ribs is the same as the distance between the two bulkheads of the underwater vehicle. The floating raft base is installed near the horizontal centerline of the port and starboard sides of the pressure hull plate.

[0008] In the above scheme, the pressure-resistant hull plate is a cylindrical shell structure.

[0009] In the above scheme, the thickness of the end-thickened pressure-resistant shell ring is 1.5-2 times the thickness of the pressure-resistant hull plate.

[0010] In the above scheme, the length of the end-thickened pressure-resistant shell ring is not less than 1 times the rib pitch.

[0011] In the above scheme, the moment of inertia of the super-large rib is 40 times greater than that of the pressure hull rib.

[0012] In the above scheme, several anti-tilting elbow plates are provided circumferentially on the extra-large rib.

[0013] In the above scheme, the extra-large rib is installed on the thickened pressure-resistant shell ring at the end.

[0014] In the above scheme, the floating raft base is installed below the horizontal centerline of the pressure hull plate, ensuring that the bottom surface of the floating raft platform is flush with the horizontal centerline.

[0015] In the above scheme, the panel of the floating raft base is firmly welded to the pressure hull plate and the pressure hull ribs through patching plates.

[0016] In the above scheme, a pad is welded to the panel of the floating raft base. After all the pads are welded to the base panel, the surface of the pads is machined so that the upper surface of the pads deviates from the reference height by no more than 1mm.

[0017] The beneficial effects of this invention are:

[0018] The compartment structure of this invention uses pressure hull plates and pressure hull ribs with dimensions identical to those of a real ship, ensuring realistic deformation simulation of underwater vehicles. Thickened pressure rings at both ends of the pressure hull plates prevent high stress concentrations during load-bearing after welding test heads at both ends. Two extra-large ribs simulate the compartmentalization of internal bulkheads, significantly simplifying the bulkhead structure and reducing construction work. The floating raft base is installed below the horizontal centerline of the port and starboard sides of the pressure hull plates, ensuring the bottom surface of the floating raft platform is flush with the horizontal centerline, simulating maximum radial deformation and maximizing deformation compensation capability. This invention's compartment structure uses actual ship structural parameters, and the load-bearing conditions are simulated using a large external pressure testing device, consistent with actual ship load-bearing conditions. This accurately generates realistic deformation, providing the most direct evidence for verifying the deformation compensation capability of elastic components in the floating raft system at extreme depths. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a plan view of the compartment structure of the full-scale underwater vehicle in an embodiment of the present invention;

[0021] Figure 2 yes Figure 1 Cross-sectional view of the floating raft platform area of ​​the shown compartment structure.

[0022] Figure 3 yes Figure 1 A cross-sectional view of the super-large ribs of the shown compartment structure.

[0023] In the diagram: 1. Thickened pressure-resistant shell ring at the end; 2. Extra-large ribs; 3. Anti-rolling elbow plate; 4. Pressure-resistant hull ribs; 5. Pressure-resistant hull plate; 6. Floating raft base. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0025] It should be noted that the illustrations provided in the embodiments of the present invention are only schematic representations of the basic concept of the present invention. Therefore, the drawings only show the components related to the present invention and are not drawn according to the number, shape and size of the components in actual implementation. In actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0026] In this invention, it should also be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first" and "second" are used only for descriptive and distinguishing purposes and should not be construed as indicating or implying relative importance.

[0027] like Figure 1-3 As shown in the figure, a compartment structure for verifying the deformation coordination capability of a large floating raft vibration isolation system is provided by an embodiment of the present invention. It includes a pressure hull plate 5 and pressure hull ribs 4. The dimensions of the pressure hull plate 5 and pressure hull ribs 4 are the same as the structural parameters of the actual ship. These identical structural parameters ensure the simulation of the actual deformation of the underwater vehicle. The compartment structure also includes end-thickened pressure-resistant shell rings 1, extra-large ribs 2, and a floating raft base 6. The end-thickened pressure-resistant shell rings 1 are located at both ends of the pressure hull plate 5. The thickened pressure-resistant shell rings at both ends prevent high stress concentration during load-bearing after welding test caps at both ends. The extra-large ribs 2 are located at both ends of the compartment structure. The distance between the two extra-large ribs 2 is the same as the distance between the two bulkheads of the underwater vehicle. The extra-large ribs 2 simulate the compartmentalization function of the internal bulkheads. Since the bulkhead structure is too complex and requires a large amount of construction, the use of extra-large ribs 2 in this invention greatly simplifies the bulkhead structure, thereby reducing the amount of construction work. Because of the extra-large ribs 2 at both ends, the floating raft platform structure needs to be pre-placed inside the compartment before the entire shell ring of the compartment is closed. For example... Figure 2 As shown, the floating raft base 6 is installed below the horizontal centerline of the port and starboard sides of the pressure hull plate 5, ensuring that the bottom surface of the floating raft platform is flush with the horizontal centerline. This can simulate the maximum radial deformation and maximize the assessment of deformation compensation capability. The large floating raft vibration isolation system can be used normally under actual maximum deformation conditions, providing the most direct basis for verifying the deformation compensation capability of the elastic components of the floating raft system at extreme depths.

[0028] Installing a full-scale floating raft vibration isolation system inside the cabin of this invention allows for comprehensive verification of the deformation coordination capability of the large floating raft vibration isolation system, and verifies the deformation compensation capability of relevant elastic components (including vibration isolators, flexible nozzles, etc.) at extreme depths.

[0029] In one embodiment of the present invention, the pressure hull plate 5 is a cylindrical shell structure.

[0030] In one embodiment of the present invention, the thickness of the end-thickened pressure-resistant shell ring 1 is 1.5-2 times the thickness of the pressure-resistant hull plate 5.

[0031] In one embodiment of the present invention, the length of the end-thickened pressure-resistant shell ring 1 is not less than 1 times the rib pitch.

[0032] In one embodiment of the present invention, the moment of inertia of the super-large rib 2 is 40 times greater than that of the moment of inertia of the pressure hull rib 4.

[0033] In one embodiment of the present invention, in order to ensure that the extra-large rib 2 does not tilt, a plurality of anti-tilting elbow plates 3 are provided in the circumference of the extra-large rib 2.

[0034] In one embodiment of the present invention, the extra-large rib 2 is mounted on the end thickened pressure-resistant shell ring 1.

[0035] In one embodiment of the present invention, the panel of the floating raft base 6 is firmly welded to the pressure hull plate 5 and the pressure hull rib 4 by means of a patch plate.

[0036] In one embodiment of the present invention, a 20mm thick pad is welded to the panel of the floating raft base 6. After all the pads are welded to the base panel, the surface of the pads is machined to ensure that the upper surface of the pads deviates from the reference height by no more than 1mm. Vibration isolators are installed on the pads, and the floating raft platform is installed on the vibration isolators.

[0037] In one embodiment of the present invention, the pressure hull plate 5, pressure hull ribs 4, end-thickened pressure hull rings 1, and extra-large ribs 2 are all made of high-strength steel used in pressure hulls of underwater vehicles, and are all fixedly connected to each other by welding. The model adopts the structural dimensions of a real ship and uses the same materials to ensure consistency between the model and the real ship, ensuring the most realistic simulation of pressure hull deformation under actual deep-water pressure conditions.

[0038] It should be noted that the feasibility of testing the full-scale cabin structure in a large external pressure test device must be fully considered. An appropriate distance must be left between the perimeter and the cylindrical wall of the test device to ensure the erection of the transport track and trolley at the bottom of the external pressure test device, and to ensure the limitations of the test device in the length direction, etc., so as to ensure the feasibility of the model test.

[0039] It should be noted that, depending on the implementation needs, the various steps / components described in this application can be broken down into more steps / components, or two or more steps / components or parts of the operation of steps / components can be combined into new steps / components to achieve the purpose of this invention.

[0040] The order of the steps in the above embodiments does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

[0041] It should be understood that those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A compartment structure for verifying the deformation coordination capability of a large floating raft vibration isolation system, comprising pressure hull plates and pressure hull ribs, characterized in that, The pressure hull plate is a cylindrical shell structure, and the dimensions of the pressure hull plate and pressure hull ribs are the same as those of the actual ship structure. The compartment structure also includes end-thickened pressure hull rings, extra-large ribs, and a floating raft base. The end-thickened pressure hull rings are located at both ends of the pressure hull plate, and the thickness of the end-thickened pressure hull rings is 1.5-2 times the thickness of the pressure hull plate. The extra-large ribs are located at both ends of the compartment structure and are installed on the end-thickened pressure hull rings. The distance between the two extra-large ribs is the same as the distance between the two bulkheads of the underwater vehicle, which is used to simulate the compartmentalization function of the internal bulkheads. The moment of inertia of the extra-large ribs is greater than 40 times that of the moment of inertia of the pressure hull ribs. The floating raft base is installed below the horizontal centerline of the port and starboard sides of the pressure hull plate, ensuring that the bottom surface of the floating raft platform is flush with the horizontal centerline.

2. The compartment structure for verifying the deformation coordination capability of a large floating raft vibration isolation system according to claim 1, characterized in that, The length of the end-thickened pressure-resistant shell ring is not less than 1 times the rib pitch.

3. The compartment structure for verifying the deformation coordination capability of a large floating raft vibration isolation system according to claim 1, characterized in that, The extra-large ribs are provided with several anti-tipping elbow plates around their circumference.

4. The compartment structure for verifying the deformation coordination capability of a large floating raft vibration isolation system according to claim 1, characterized in that, The panel of the floating raft base is firmly welded to the pressure hull plate and the pressure hull ribs by means of patching plates.

5. The compartment structure for verifying the deformation coordination capability of a large floating raft vibration isolation system according to claim 4, characterized in that, The raft base panel is welded with pads. After all the pads are welded to the base panel, the surface of the pads is machined so that the upper surface of the pads deviates from the reference height by no more than 1mm.

Images