35 results about "Pressure hull" patented technology

This invention relates to a reusable, detachable, perforated reinforcement and sealing structure for pressure-resistant composite material hulls used in deep-sea equipment. The structure comprises: an outer sealing reinforcement component fitted and sealed to the outer circumferential surface of the hull at a first circular hole; an embedded, segmented sealing core positioned between the outer sealing reinforcement component and the inner side of the hull, fitting and sealingly sealing the first circular hole; the outer guide surface of the embedded segmented sealing core fitting with the outer sealing reinforcement guide surface of the outer sealing reinforcement component; an inner sealing reinforcement component positioned within the central through hole of the embedded segmented sealing core and the first connecting hole of the outer sealing reinforcement component; the inner sealing reinforcement component fitting and sealingly sealingly with the first connecting hole; the inner sealing guide surface of the inner sealing reinforcement component fitting with the inner guide surface of the embedded segmented sealing core; a locking structure reinforcement ring fitted and positioned inside the hull; and a locking sealing plug detachably and securely connected to the inner sealing reinforcement component. This invention is used for perforated reinforcement and sealing of pressure-resistant composite material hulls used in deep-sea equipment.

One aspect of the present invention is to provide a high-strength steel material having excellent low-temperature toughness, which is suitable for use in a submarine pressure hull, and a manufacturing method therefor.

The application discloses a kind of submersible cabin bulkhead main frame end point and multistage connection structure of pressure hull, including pasting plate, T-shaped longitudinal bone, cabin bulkhead main frame and arc knee plate;Pasting plate is installed on the surface of pressure hull;T-shaped longitudinal bone includes T-shaped longitudinal bone web and T-shaped longitudinal bone faceplate, T-shaped longitudinal bone web is connected with pasting plate, and the end of T-shaped longitudinal bone web and T-shaped longitudinal bone faceplate is connected with plane cabin bulkhead;Cabin bulkhead main frame includes cabin bulkhead main frame web and cabin bulkhead main frame faceplate, and the end of cabin bulkhead main frame web and cabin bulkhead main frame faceplate is connected with T-shaped longitudinal bone faceplate;Arc knee plate is connected with T-shaped longitudinal bone faceplate and cabin bulkhead main frame faceplate.The application is connected by T-shaped longitudinal bone, pasting plate, arc knee plate, arc knee plate faceplate and other multistage, and structure stress is gradually reduced, and finally the problem of local stress concentration of pressure hull is solved, so that the stress of each structure is relatively uniform, the problem of local stress concentration is obviously improved, and the deformation between each structure is more coordinated.

The invention belongs to the field of deep-sea engineering, and discloses a deep-sea pressure-resistant shell critical buckling load prediction method and a related device, and the method comprises the steps: obtaining the feature data of a target shell; the characteristic data of the target shell comprises geometric parameters, defect characteristic information, material characteristic data and service temperature condition data of the target shell; preprocessing the feature data of the target shell to obtain preprocessed feature data of the target shell; taking the preprocessed feature data of the target shell as the input of a pre-constructed shell critical buckling load prediction model, and outputting to obtain a critical buckling load prediction result of the target shell; geometric parameters, defect characteristic information, material characteristic data and service temperature condition data of a target shell are obtained, preprocessed and then input into a pre-constructed shell critical buckling load prediction model, the coupling effect of defects and temperature is considered, and under the condition of small sample data, the target shell critical buckling load prediction method can be used for predicting the target shell critical buckling load. And accurate prediction of the critical buckling load of the target shell is realized.

The application discloses an underwater vehicle, a flexible platform connecting structure and a manufacturing method thereof. The flexible platform connecting structure of the underwater vehicle comprises a rigid platform plate, an upper arc-shaped plate and a flexible supporting structure. The flexible supporting structure comprises a supporting plate and elastic plates. A slot is formed on the bottom end face of the rigid platform plate. The bottom end of the upper arc-shaped plate is fixedly connected with the top end face side of the rigid platform plate. The top end of the upper arc-shaped plate is fixedly connected with the shell plate of a pressure-resistant hull. The supporting plate is accommodated in the slot and is arranged with a gap from the bottom wall of the slot. The end of the supporting plate is fixedly connected with the shell plate of the pressure-resistant hull. The two side walls of the supporting plate are outwardly extended with a plurality of elastic plates. The end of the elastic plate is fixedly connected with the slot side wall of the rigid platform plate. The flexible platform connecting structure can adapt to the shrinkage deformation of the pressure-resistant hull structure and will not generate structural noise.

This utility model discloses a pressure-resistant chamber for a deep-sea submersible, belonging to the technical field of pressure-resistant chambers. It includes a chamber body with a watertight plug on top and hatch covers at both ends. A cross-shaped reinforcing rib is fixedly connected to one side of each hatch cover. A sealing assembly is provided between the chamber body and the hatch covers, and also between the chamber body and the watertight plug. The chamber body includes a base and reinforcing components. The surface of the base body is provided with the reinforcing components. This utility model incorporates sealing components to facilitate long-term and effective sealing between the chamber body and the hatch covers, resulting in a good sealing effect. The sealing rubber is made of perfluororubber, which has excellent corrosion resistance and is suitable for deep-sea environments. This utility model uses a strength layer to improve the strength of the chamber body, a corrosion-resistant layer to improve its corrosion resistance, and a pressure-resistant layer to improve its pressure resistance.

The embodiment of the invention discloses a vibration displacement measurement method and a related device, and belongs to the technical field of underwater vehicle testing, and the method comprises the steps: carrying out the measurement of a vibration displacement on a reflection fringe image collected by a camera located in a pressure-resistant housing of an underwater vehicle main body, and substituting the stripe image light intensity distribution of each pixel point, the background light intensity, the stripe contrast ratio, the initial carrier phase and the system displacement sensitivity coefficient into a cosine function form formula of the stripe image light intensity distribution to obtain vibration displacement corresponding to each target point on the thin-wall skin to be measured. Thus, the method does not depend on a single light intensity parameter, but integrates five key parameters of the background light intensity, the fringe contrast, the initial carrier phase and the system displacement sensitivity coefficient of the pixel point, and substitutes the five key parameters into a cosine function form formula of the light intensity distribution of the fringe image to carry out vibration displacement calculation. Through the synergistic effect of the five parameters, the calculation precision of the vibration displacement of the to-be-measured thin-wall skin can be improved.

The application discloses a method for evaluating multi-stage degradation related competing failure of underwater pressure hulls, and belongs to the technical field of reliability evaluation of underwater equipment, which is used for reliability evaluation of underwater equipment and comprises the following steps: calculating the overall degradation rate based on degradation quantity, and calculating the posterior membership probability and the effective estimation value of stage parameters; constructing the inter-stage correlation function and the multi-stage dynamic coupling model by using the statistical characteristics of the average degradation rate of each stage, so that the overall degradation statistical expectation is obtained; introducing the inter-stage correlation function after impact correction, so that the statistical expectation of the overall degradation process of the underwater pressure hull is corrected; calculating the system expected life based on the system overall competing failure reliability function, and evaluating the influence of the impact event and the degradation rate on the reliability. The competing failure reliability model considering the degradation and the impact simultaneously is established, so that the problem that the existing technology is difficult to accurately evaluate the reliability of the underwater pressure hull under the condition of multi-stage degradation and impact coupling is solved.

The invention relates to a welding robot (20) for introducing a pressure hull penetrator (70) into a pressure hull (10), wherein the welding robot (20) has a frame (30) with at least three feet (40), wherein the feet (40) are designed for placement on the pressure hull (10), wherein the welding robot (20) has a multi-axis arm (50), wherein the welding robot (20) has a plasma cutting head and a welding head, and wherein the welding robot (20) has a gripping device for a pressure hull penetrator. - Fig. 1 -

A large-angle wound composite pressure hull with a positive Gaussian curvature metal liner, including a metal liner 4 and a carbon fiber layer 3 wrapped outside the metal liner. The metal liner is pro

The present application relates to a kind of composite pressure cabin section corrosion protection layer and forming method;Including the following steps: composite pressure cabin section surface is coated with epoxy resin, forms waterproof layer;Polyurea resin and volatile solvent type polymerization inhibitor are mixed, obtain impregnation liquid, continuous fiber or fabric is impregnated in impregnation liquid, after impregnation, traction, winding on waterproof layer, form polyurea continuous fiber reinforced layer, heat radiation mode is used to irradiate during winding;Polyurea is sprayed on the surface of polyurea continuous fiber reinforced layer, and heated and solidified, forms polyurea layer on polyurea continuous fiber reinforced layer, by the design of the forming method of composite pressure cabin section corrosion protection layer to solve the existing polyurea protection layer in the laying / recovery and when underwater cruising may occur knock, cause polyurea protection layer peeling, damage etc., cause the connectivity failure of polyurea protection layer and composite pressure cabin section technical problem.

The application discloses an AUV pressure cabin cylinder supporting device, which comprises a supporting device body arranged in the pressure cabin cylinder; the supporting device body comprises a supporting plate, vertical plates symmetrically arranged on the upper surface of the supporting plate, a D-shaped ring arranged perpendicularly to the vertical plates and a movable part arranged on the lower surface of the supporting plate; the movable part comprises a plurality of movable units arranged radially in parallel; each movable unit comprises a fixed base, a moving slider and a locking slider; a first groove is formed in one side surface of the fixed base; the moving slider is arranged in the first groove and detachably connected with the fixed base through a tensioning assembly; and an inclined surface is arranged at the contact position of the locking slider and the moving slider. The movable part and the connecting piece are used for realizing the radial movement of the supporting device body along the pressure cabin cylinder, completing the installation and dismounting of the supporting device body, preventing the damage of components and task modules, shortening the maintenance time, improving the work efficiency and reducing the maintenance cost.

A method of making a pressure cabin wall assembly for an aircraft includes determining optimized positions of splice angles such that splice surfaces of the splice angles will form a circumferential splice surface of the pressure cabin wall assembly in an optimized shape. The method further includes performing a virtual fit between the plurality of splice angles in the optimized positions and a rear pressure cabin wall. The method also includes determining splice angle hole positions of splice angle holes to be drilled in each of the splice angles such that the splice angle holes will correspond with rear pressure cabin wall holes pre-drilled in the rear pressure cabin wall. The method further includes drilling the splice angle holes in each of the splice angles at the splice angle hole positions. The method also includes joining each of the splice angles with the rear pressure cabin wall such that the splice surfaces form the circumferential splice surface in the optimized shape.

A fuel cell circulating water system and operation process for underwater sealed cabin, including pressure hull, conformal heat exchange water tank, metal hose, electromagnetic valve, spiral heat exchange pipe group, temperature control tee valve, inner rib, fuel cell stack, circulating water tank, long continuous electronic equipment, circulating water pump, outer rib, cylindrical vacuum insulation board, light shell, etc. The spiral heat exchange pipe group is arranged between the inner ribs, which makes full use of the space between the inner ribs and the arc segment of the pressure hull, which is difficult to use, and avoids introducing seawater into the cabin for cooling by means of heat transfer through the bulkhead. Not only the equipment and pipeline of the traditional cooling method are saved, the auxiliary power consumption of the system is effectively reduced, but also the opening of the seawater pipeline on the pressure hull is avoided, the structural safety of the underwater carrier platform is effectively improved. The stack is always in the appropriate working temperature range, the heat loss is effectively reduced, and the system efficiency is improved.

The invention belongs to the technical field of single-shell submarines, and particularly discloses a concave shape-preserving pressure-resistant hatch cover device for a single-shell submarine, which comprises a single-layer submarine pressure-resistant hull, and a concave shape-preserving pressure-resistant hatch cover assembly is arranged at a hatch of the single-layer submarine pressure-resistant hull. When the concave type conformal pressure-resistant hatch cover assembly is closed, the surface of the concave type conformal pressure-resistant hatch cover assembly is flush with the outer surface of the single-layer submarine pressure-resistant hull, a conical concave structure is innovatively arranged on a main hull (namely a single-shell pressure-resistant shell), and a pressure-resistant hatch cover and accessory devices of the pressure-resistant hatch cover assembly are contained in the concave space; a non-pressure-resistant hatch cover is arranged at the position, flush with the hull, of the outside, the surface of the hatch cover in the closed state is flush with the outer surface of the main hull of the submarine, smoothness of the overall appearance is maintained, the watertight and pressure-resistant requirements of the structure are met, the fairness requirement of the hull line type is met, no protrusion protrudes out of the hull line type, and the structure is simple. And fluid resistance and fluid noise can be reduced.

The utility model discloses a buoyancy driving device integrated with a pitching adjusting function, which belongs to the technical field of underwater vehicles, comprises a pressure-resistant shell and a sealing end cover mounted on the pressure-resistant shell, and is characterized in that a buoyancy adjusting component is mounted on the sealing end cover and forms a plunger component axially stretching towards the outer side of the sealing end cover; an adjusting driving device for driving the axial moving end of the buoyancy adjusting component is mounted in the pressure-resistant shell; and a counter weight sliding block which moves axially is mounted in the pressure-resistant shell, is driven by an adjusting driving device and moves in the direction opposite to the buoyancy adjusting component. The buoyancy driving device integrating the pitching adjusting function has the remarkable technical advantages by means of the design of being simple and compact in structure, efficient and environmentally friendly. The operation precision and maneuverability of the underwater vehicle are improved, the maintenance cost is effectively reduced, the stability and reliability of the system are improved, and the increasing requirements for high-performance underwater equipment are met.

The application discloses a kind of carbon fiber composite material pressure shell under the fatigue life prediction method, system, equipment and medium of cyclic hydrostatic pressure, related to deep sea equipment structure safety evaluation technical field, method includes: based on the three-dimensional finite element model of pressure shell geometry and lay-up is established, after cyclic hydrostatic external pressure is applied, stress component is obtained by solving;Carry out multi-damage mode determination, identify damage unit and type;Material performance degradation parameters are updated by user-defined subroutine, for next cycle analysis;The application is oriented to cyclic hydrostatic pressure condition, five kinds of damage modes are considered simultaneously, gradual degradation and sudden degradation are simulated simultaneously, fatigue life, residual strength and damage distribution can be output, more accurate prediction is convenient for engineering application.

The present application relates to inertial navigation system technical field, particularly to an anti-interference integrated deepwater inertial navigation system, comprising an inertial navigation system, the inertive navigation system comprises a pressure hull, an inertial measurement unit inner frame, an anti-deformation pad, a Doppler log and a heat dissipation device; the top of the pressure hull is provided with an upper cover; the inertial measurement unit inner frame is installed in the pressure hull; the anti-deformation pad is installed between the base of the inertial measurement unit inner frame and the pressure hull; the Doppler log is connected with the pressure hull; the connection between the Doppler log and the pressure hull is sealed; and the heat dissipation devices are installed on the base of the inertial measurement unit inner frame.The present application realizes integrated design, integrated debugging and integrated calibration of the inertial navigation system and the Doppler log, so that the user is free from the calibration of the inertial navigation system and the Doppler log; when working in deep water, the influence of the deformation of the pressure hull on the inertial measurement unit inner frame caused by deep water pressure is greatly avoided, and the navigation information can be accurately output.

The utility model discloses a novel mechanical locking type underwater glider pressure-resistant shell, which belongs to the technical field of underwater gliders, and comprises two shell units which are axially connected and a hoop used for connecting the two shell units, an embedding and clamping concave part is arranged on the outer side ring surface of the butt joint end part of the two shell units, and the embedding and clamping concave part is arranged on the outer side ring surface of the butt joint end part of the two shell units. The hoop forms a ring sleeve-shaped component with an opening, a fastener for locking is arranged at the opening of the hoop, and an embedding and clamping convex part matched with the embedding and clamping concave part is arranged on the inner ring surface of the hoop. According to the pressure-resistant shell, through mechanical locking of the circular ring clamps and the shell units, the convenience of assembly and disassembly is greatly improved, the space requirement is reduced, the stability, durability and environment friendliness of connection are improved, the production process is optimized, and the requirements of modern green production and sustainable development are better met.

The invention belongs to the technical field of assembly, and discloses a positioning system and an assembly method for a pressure-resistant cabin and a frame of an underwater vehicle, and a cabin mounting interface and a positioning piece mounting interface which are arranged at the front part of the frame of the underwater vehicle provide a foundation for positioning of the pressure-resistant cabin; a cabin body support at the rear part of the pressure-resistant cabin body is connected with a cabin body mounting interface of the frame, so that the axial fixation of the pressure-resistant cabin body is realized; the installation tool is connected with the first tool connector in the front of the pressure-resistant cabin, reliable connection points or bearing positions are provided for hoisting or lifting of the large pressure-resistant cabin, and carrying and preliminary positioning in the assembling process are greatly facilitated; the multiple positioning assemblies are connected with the positioning piece installation connectors of the frame, the radial positions of the parts, supporting the pressure-resistant cabin, of the positioning assemblies can be adjusted, and therefore accurate radial supporting and positioning of the pressure-resistant cabin are achieved. The problems that in the prior art, when a large pressure-resistant cabin is assembled, positioning precision is low, operation is complex, and consumed time is long are effectively solved.

The present application relates to underwater vehicle digital design technical field, especially to a kind of pressure hull mounting piece three-dimensional model assembly positioning method.The present application is positioned to pressure hull mounting piece based on the mode of positioning skeleton assembly, and the component part of positioning skeleton is designed, the positioning problem of mounting piece on pressure hull curved surface is solved, and the large amount of manpower cost required by manual assembly and change is reduced;And positioning position can be parameterized adjustment, ensure the positioning accuracy, and can be well kept and design state information match;The present application describes positioning position by positioning index, facilitates batch operation, and the number of underwater vehicle pressure hull mounting piece is hundreds, and the technical solution is good in universality, can be operated in batches by program, substantially improve the design efficiency of underwater vehicle.

A design method for a pressure-resistant shell of an underwater vehicle comprises the steps that a parameterized finite element simulation model is constructed based on basic parameters and rib parameter ranges of the pressure-resistant shell; performing batch simulation through the parameterized finite element simulation model, generating a sample data set containing rib parameters and corresponding performance indexes, and preprocessing and dividing the data set; a forward prediction model and a reverse design model are constructed and trained, the forward prediction model is used for predicting performance indexes of the pressure-resistant shell according to the input rib parameters, and the reverse design model is used for generating a rib parameter scheme meeting requirements according to the input performance requirements; and receiving a design demand of a user, generating a preliminary parameter scheme by using the trained reverse design model, performing rapid verification and optimization through the forward prediction model, and outputting a globally optimal design parameter of the pressure-resistant shell. By means of the method, intelligentization and high efficiency of design of the pressure-resistant shell of the underwater vehicle can be achieved.

This invention discloses a long-endurance nuclear-powered underwater vehicle based on heat pipe-cooled reactor thermoelectric conversion, belonging to the fields of underwater vehicles and small nuclear power technology. The vehicle includes a streamlined pressure hull and axially arranged bow functional compartment, central control compartment, nuclear power compartment, and propulsion and execution compartment. The core component is an integrated small nuclear thermoelectric power unit sealed within the nuclear power compartment. This unit uses a heat pipe-cooled solid-state reactor as a heat source, directly converting thermal energy into electrical energy through a thermoelectric conversion unit, without rotating moving parts. The unit integrates radiation shielding, closed-loop cooling, passive waste heat removal, and emergency cooling systems. This invention solves the technical problems of insufficient endurance in existing underwater vehicles and the complex structure and high noise of traditional nuclear power units. It has advantages such as small size, light weight, long lifespan, good quietness, and high safety, making it suitable for long-cycle operations such as marine environmental monitoring, seabed resource exploration, and underwater security early warning.

The application discloses an underwater pressure-resistant structure health monitoring simulation test platform and method, relates to the technical field of simulation test platforms, and comprises a counterweight support frame, a simulation test platform body, a folding support leg, a folding mechanism, a double-side holding assembly and a through-hole inserting fastener. The simulation test platform body is hoisted by equipment, and then the staff can dismount the simulation test platform body by bolts; subsequently, the folding support leg is rotated by 90 degrees, and then the folding support leg is fixed by being screwed into the threaded holes, so that the fixing cone is vertically downward; subsequently, the counterweight support frame is hoisted and placed in the sea, so that the simulation test platform body sinks into the seabed under the action of the gravity of the counterweight support frame; subsequently, the counterweight support frame is preliminarily fixed by being inserted into the seabed, so that the stability of the whole of the counterweight support frame and the simulation test platform body is improved, and the simulation test platform body is prevented from toppling.

Proposed are a submarine power supply system and power supply method using a seawater battery, the system having a chargeable / dischargeable battery that is arranged on the outside of a pressure hull, so as to use, as a cathode, sodium ions dissolved in seawater, and thus produce electric power, which is then used as electric power required for operating a submarine.

A design method of a pressure hull of an underwater vehicle, comprising: constructing a parameterized finite element simulation model based on the basic parameters of the pressure hull and the rib parameter range; generating a sample data set containing rib parameters and corresponding performance indicators by batch simulation through the parameterized finite element simulation model, and preprocessing and dividing the data set; constructing and training a forward prediction model and a reverse design model, the forward prediction model being used to predict the performance indicators of the pressure hull according to the input rib parameters, and the reverse design model being used to generate a rib parameter scheme meeting the requirements according to the input performance requirements; receiving the design requirements of a user, generating a preliminary parameter scheme by using the trained reverse design model, and performing rapid verification and optimization through the forward prediction model to output the globally optimal pressure hull design parameters. The method can realize the intelligentization and high efficiency of the design of the pressure hull of the underwater vehicle.

The invention discloses an underwater pressure-resistant cabin multi-stage degradation related competitive failure assessment method, which belongs to the technical field of underwater equipment reliability assessment, is used for reliability assessment of underwater equipment, and comprises the following steps: calculating an overall degradation rate based on a degradation amount, and calculating a posterior membership probability and an effective estimation value of a stage parameter; constructing an inter-stage correlation function and a multi-stage dynamic coupling model by using the statistical characteristics of the average degradation rate of each stage to obtain an overall degradation statistical expectation; the inter-stage correlation function after impact correction is introduced, and the statistical expectation of the overall degradation process of the underwater pressure-resistant cabin is corrected; and calculating the expected service life of the system based on the overall competitive failure reliability function of the system, and evaluating the influence of the impact event and the degradation rate on the reliability. According to the method, the problem that in the prior art, accurate reliability evaluation is difficult to carry out on the underwater pressure-resistant cabin under the multi-stage degradation and impact coupling condition is solved by establishing the competitive failure reliability model considering the degradation and impact effects at the same time.

The utility model belongs to underwater vehicle emergency safety equipment technical field discloses a kind of underwater unmanned vehicle passive vacuum adsorption emergency positioning system, including pressure hull, positioning communication module, emergency battery, vacuum chamber and chamber base;By setting the micro-activated safety valve of one by one, it can be lost when underwater unmanned vehicle, and the diving depth reaches the set depth, automatically open, make communication assembly float to reach water surface, to send positioning signal outward, solve the problem that underwater autonomous unmanned vehicle appears when larger accident Easy to cause the loss of vehicle problem.When the vehicle fails and descends to the super deep sea area in disorder, the utility model does not depend on electrical system control, and the floating communication assembly can be directly thrown to the water surface. The coordinates before floating are sent to the ground end by the Beidou unit.

The invention provides a topological optimization design method and system for a spherical pressure-resistant structure of a deep-sea manned submersible vehicle. The method comprises the steps that S1, a level set function is initialized, a spherical structure contour and a structure area are defined, and material parameters are determined; s2, constructing a topological optimization model which takes a structural shape as a design variable, takes volume minimization of a current material as an optimization target, and takes a K-S polymerization equation value of a buckling factor reciprocal of a first four-order characteristic value of the structure as an optimization constraint; s3, on the basis of the level set function, the spherical structure contour, the structure area and the material parameters, an updated level set function is obtained on the basis of the topological optimization model; and S3, repeatedly triggering the step S3 until the difference of the volume fractions obtained by two continuous iterative calculations is smaller than a preset value, obtaining a current level set function, and outputting the optimized spherical pressure-resistant structural form according to the current level set function.