47 results about "Burst pressure" patented technology

The invention discloses a battery anti-explosion valve plate and a manufacturing method thereof. The manufacturing method comprises the following steps: taking a material of which the mechanical property meets requirements as an anti-explosion valve base material; an anti-explosion valve plate with anti-explosion nicks is obtained on the anti-explosion valve base material through stamping; and the anti-explosion valve plate is subjected to annealing treatment. According to the anti-explosion valve base material, material selection is conducted on the anti-explosion valve base material according to the force performance, the crystal structure of the anti-explosion valve plate in the area where the anti-explosion nicks are located is changed through annealing, grain size distribution is made to be uniform, the stress and hardness of the anti-explosion valve plate in the anti-explosion nick area are reduced, fluctuation of the bursting pressure of the anti-explosion valve plate can be reduced, and the anti-explosion valve plate has the good anti-explosion performance. And the anti-exposure valve plate reaches a stable explosion value.

This invention relates to the field of research on the operational characteristics of overpressure relief devices, and particularly to an experimental device for measuring the operational characteristics of overpressure relief devices under water hammer conditions. The device includes: a high-pressure air compressor, a frame, a piston accumulator, a quick-opening device, a high-pressure test assembly, and a high-frequency dynamic pressure sensor. This invention enables the measurement of operational characteristics under different pressure rise rate loads caused by water hammer phenomena on a test bench, providing an experimental platform for the research on the operational characteristics of overpressure relief devices under high pressure rise rates. The overall device is simple, quick, and stable. It effectively solves the problem of applying high pressure rise rate loads in current overpressure relief device operational characteristic measurement tests, overcomes the danger of using combustible gas explosions as pressure sources in existing operational characteristic measurement tests, and overcomes the shortcomings of existing test methods, such as long testing times, the need to calculate gas explosion pressure, and the difficulty in accurately controlling the pressure rise rate.

This invention relates to the field of mine sealing technology and discloses a fixed-point sealing device for underground coal mine boreholes, comprising: a gas extraction pipe, with two grouting and sealing mechanisms symmetrically arranged at both ends of the mine gas extraction hole sealing section on the outer wall of the gas extraction pipe; the grouting and sealing mechanism includes: a grouting bag, the outer wall of which is divided by an isolation layer into an independent sealing grout injection chamber and an external expansion coating bag, the external expansion coating bag being composed of multiple ring arrays of bag units connected end to end; and a coating supply component, which is connected to the feed end of the external expansion coating bag through a pipeline, the outer wall of each bag unit of the external expansion coating bag being provided with a bursting membrane, the bursting pressure threshold of the bursting membrane being matched with the coating spray coverage requirements; the invention adopts the design of the external expansion coating bag and the bursting membrane, which can realize the instantaneous spraying of liquid sealing coating, uniformly covering the inner wall of the extraction hole, forming an initial adhesive layer, and enhancing the adhesion between the sealing material and the hole wall.

The application discloses a verification method for burst pressure of a type IV high-pressure hydrogen storage cylinder, and comprises the following steps: establishing a hydrogen storage cylinder geometric model; obtaining material performance parameters of each structure of the hydrogen storage cylinder; applying a design internal pressure load to the hydrogen storage cylinder geometric model to perform internal pressure static load simulation analysis, and obtaining variation rules of stress values of key positions with the internal pressure load; establishing a strain failure criterion suitable for the hydrogen storage cylinder, performing progressive damage failure simulation analysis on the hydrogen storage cylinder, and obtaining variation rules of axial and ring direction displacements of the hydrogen storage cylinder with the internal pressure; determining the burst pressure of the hydrogen storage cylinder through the internal pressure static load simulation analysis and the progressive damage failure simulation analysis respectively, taking the minimum value of the burst pressures obtained through the two methods as the burst strength; and comparing the determined burst strength with a design burst pressure to verify rationality of the hydrogen storage cylinder design. The burst strength calculated by the method is more accurate, and the safety of the hydrogen storage cylinder in use can be further ensured.

The application discloses a drilling blowout prevention and gas extraction integrated hole sealing device and method, which comprises a sleeve, a tee joint, a gas extraction pipe and a surge bag. The integrated hole sealing device is installed at a control hole, at which time gas extraction operation can be performed on each control hole, and then hydraulic fracturing operation is continuously performed in a burst pressure hole. After one of the control holes is connected with a crack generated by the burst pressure hole, part of the gas and water-coal mixture will be discharged into the surge bag from the control hole. The surge bag is rapidly expanded from a folded state, thereby playing a buffering role. The control hole can extract gas, discharge water and discharge residue, the danger of a large amount of gas and water-coal mixture being suddenly discharged from the control hole is avoided, and whether each control hole is connected with the burst pressure hole can be known by observing the change of the surge bag. The control hole is temporarily blocked, thereby facilitating the continuous fracturing operation on other control holes, and finally all the control holes can be efficiently and accurately connected during the hydraulic fracturing process of the burst pressure hole.

The utility model provides a multifunctional hollow fiber membrane testing device. The multifunctional hollow fiber membrane testing device comprises a compressed air release assembly, a first three-way pipe, a digital display pressure gauge, a first pressure regulating valve, a second three-way pipe, a first air pipe valve switch, a second air pipe valve switch, a bursting pressure testing assembly and a tangential flow testing assembly, the air inlet end of the compressed air release assembly communicates with one end of the first three-way pipe through an air pipe. The other two ends of the first three-way pipe are respectively connected to one side of a digital display pressure gauge and one side of a first pressure regulating valve through air pipes; the other side of the first pressure regulating valve is communicated to one end of a second three-way pipe through an air pipe; the other two ends of the second three-way pipe are respectively connected to one side of a first air pipe valve switch and one side of a second air pipe valve switch through air pipes; the other side of the first air pipe valve switch is connected with the bursting pressure testing assembly; the other side of the second air pipe valve switch is connected with the tangential flow testing assembly. The problems that the utilization rate and the testing efficiency of the hollow fiber membrane testing device are low are solved.

The utility model discloses an anti-deformation device for welding an anti-explosion valve of a battery cover plate, and belongs to the field of welding of battery cover plates. Comprising a supporting seat, a base, a pressing plate, a pressing block and a power assembly. By arranging the base and the pressing plate with the pressing block, during welding, the pressing plate drives the pressing block to move downwards, so that the pressing block is matched with the base to firmly press and fix the substrate, controllable downward pressure is applied in real time in the welding process, deformation caused by thermal stress is actively counteracted, and therefore the situation that the substrate deforms in the welding process can be effectively prevented; and correction treatment after deformation is not needed. Therefore, the flatness deviation of the substrate after the explosion-proof valve is welded can be ensured to be less than or equal to 0.1 mm, and the explosion pressure stability (deviation lt; 5%). And the contact area of the substrate, the base and the pressing block is guaranteed, the heat dissipation efficiency can be guaranteed, stress residues caused by cold and hot changes in the welding process are greatly reduced, and deformation in the subsequent use process is avoided.

The utility model discloses a burst pressure gauge calibrating device, including pressure generator, electric control valve, buffer tank, solenoid valve and pressure standard gauge through pipeline connection in proper order still include pressure -relief valve, and solenoden valve is connected with pressure standard gauge, pressure -relief valve through three -way pipeline A, and the first interface of three -way pipeline A connects solenoid valve, and the second interface connects pressure standard gauge and burst pressure gauge, and the third interface connects pressure -relief valve. The utility model burst pressure gauge calibrating device realizes ladder pre -pressing through pressure generator, electric control valve, buffer tank and solenoid valve to reach the effective simulation to actual dynamic working condition, can truly reflect the instrument working condition.

The invention relates to the technical field of new energy, and discloses a shell structure, a battery and a battery pack. A pressure release valve is arranged on the first wall surface of the shell structure, and the bursting pressure of the pressure release valve is a; the pressure release valve comprises a weak part, and the residual thickness ratio of the weak part is b; the ratio of the mass of the Ti element of the shell structure to the total mass of all the elements of the shell structure is c; wherein c is greater than or equal to 60%; and c * b * a is greater than or equal to 1.5 and less than or equal to 24. According to the shell structure provided by the invention, the light weight of the shell structure is realized by comprehensively controlling the relationship among a, b and c, so that the energy density of the battery is improved; and meanwhile, when the battery is in thermal runaway, the pressure release valve can be opened in time, internal heat is effectively discharged, and detonation of the shell is avoided, so that light weight and safety are both considered. When the formula value of c.b.a is lower than the lower limit, light weight of the shell structure is not facilitated, and when the formula value of c.b.a is higher than the upper limit, the opening pressure of the pressure release valve is too large, and heat cannot be discharged in time.

The utility model discloses a grease injection switching device with a pressure relief function. The grease injection switching device comprises an adapter, a circulation channel is formed in the adapter, and the circulation channel is provided with a switching inlet suitable for being communicated with a grease storage tank and a switching outlet communicated with a grease injection gun; the adapter is provided with a first pressure relief opening and a second pressure relief opening which are communicated with the circulation channel. A pressure relief valve is arranged at the first pressure relief opening; a rupture disk is arranged at the second pressure relief opening; the bursting pressure of the bursting piece is larger than the relief pressure of the pressure relief valve. In the embodiment, in the grease injection process, when the grease injection pressure exceeds the preset pressure, the pressure relief valve is opened to conduct first-stage pressure relief; after the pressure release valve is blocked by the sealing grease and fails, when the pressure in the pipeline continues to rise to reach the bursting pressure of the bursting piece, the bursting piece is broken to achieve secondary pressure release, and pressure release is safer and more reliable.

The utility model discloses a wheel hub drum body and a wheel hub for a tire bursting pressure test, which belong to the technical field of tire pressure tests, the head end of the wheel hub drum body is provided with a drum body rim, the tail end of the wheel hub drum body comprises a thickened section, the outer wall of the thickened section is provided with a compression ring groove, and the inner wall of the thickened section protrudes inwards along the radial direction to form an annular bulge. The tail end of the hub drum body is subjected to small local design improvement, and the strength of the tail end of the hub drum body is enhanced, so that the non-deformability of the contact parts of the tail end of the hub drum body, the compression ring and the movable steel ring is improved, and the situation that the contact parts shrink inwards due to stress in the test process and consequently the diameter is reduced can be avoided. Therefore, the problems that the compression ring is disengaged and the movable steel ring is disengaged and outburst are prevented, so that the bursting pressure test can be smoothly carried out.

The invention discloses a full-process simulation and blasting pressure prediction method for a weak-rigidity core mold composite material shell, and belongs to the technical field of solid rocket engine integrated explosive forming shell design. The method comprises the following steps: designing an equal residual stress tension system based on a fiber winding layer stress theory; constructing a finite element model in the shell winding process, iteratively optimizing a tension system and determining a stress field and a strain field after winding; taking the stress field and the strain field as predefined fields, constructing a finite element model in the curing process, and calculating the stress field and the strain field after curing; and based on the stress field and the strain field after curing, progressive damage analysis is realized through a three-dimensional Hashin criterion, and the maximum blasting pressure of the shell with the powder is predicted. The problems that in the prior art, a tension system lacks collaborative optimization, simulation cannot cover the whole process, and blasting prediction deviation is large are solved, precise coupling prediction of the process and performance is achieved, and theoretical support is provided for optimization of the integrated forming process.

Burst device (10) for a hybrid gas generator (40), comprising a bursting element (20) which, on its inner side (21), at least partially delimits an igniter chamber (25), wherein the bursting element (20) can be pressurized on its outer side (22) in the rest state, and in the operating state the bursting element (20) can be destroyed by a bursting pressure on the igniter chamber side, with a support sleeve (30) arranged in the igniter chamber (25) having an opening (33) formed at an axial end of the support sleeve (30), wherein the support sleeve (30) comprises a collar (34) which delimits the opening (33), wherein the bursting element (20) is supported at least partially on the collar (34) of the support sleeve (30) when pressurized externally, and wherein the support sleeve (30) has a second opening (32) at its second axial end through which an igniter (44) can be positioned in the ignition chamber (25), characterized in thatthat the bursting element (20) is a bursting cap, wherein this completely encloses the support sleeve (30), and the bursting element (20) is completely pressed against an outer surface (35) of the support sleeve (30) when external pressure is applied, wherein the support sleeve (30) is movably arranged in relation to the bursting element (20), and wherein the collar (34) is inclined at least partially inwards towards a sleeve-like side wall (31) of the support sleeve (30), wherein an angle (α) is formed between the collar (34) and the sleeve-like side wall (31) which has a value of 10° to 80°.

The utility model relates to butterfly valve technical field discloses high pressure resistant three eccentric sealing butterfly valve, including valve body, butterfly plate, valve shaft, valve seat and valve seat ring, the valve seat sets up in butterfly plate one side, separates with valve body, is fixed on the valve body through valve seat ring screw, the top fixed mounting of valve body has the support, the top fixed mounting of support has worm wheel assembly, the valve shaft installs on worm wheel assembly, and rotates with worm wheel assembly, the utility model discloses through separation formula valve seat structure (valve seat separates with valve body and is fixed through valve seat ring) makes sealing surface convenient replacement, and maintenance cost reduces 50%. Meanwhile three eccentric structure (80±2mm radial offset, 12±0.5mm axial offset, 9°±0.3° inclination) cooperate Stellite 6 alloy sealing layer, realizes zero leakage (≤10 ‑6 cc / sec) under 15MPa working pressure. Self-sealing design makes medium pressure greater sealing surface fit more tightly, and burst pressure can reach 25MPa (verified through API 598 test), and high pressure sealing performance is excellent.

The invention belongs to the technical field of nuclear power, and particularly relates to a method and device for determining the limit pressure-bearing performance of a pit defect of a heat transfer tube of a steam generator. According to the method for determining the limit pressure-bearing performance of the pit defect of the heat transfer tube of the steam generator, the maximum pressure allowed to be borne by the heat transfer tube with the pit defect can be rapidly, reasonably and conservatively calculated, and rapid evaluation can be provided for state monitoring and operation evaluation of the nuclear power steam generator. By means of the method, the ultimate bursting pressure calculation method for the pit type defect of the heat transfer pipe can be optimized, and the bursting pressure of the heat transfer pipe with the pit defect can be represented more accurately. Therefore, the influence of the pit defect on the bearing capacity of the heat transfer tube is effectively identified in heat transfer tube integrity evaluation, and the failure risk of the heat transfer tube is reduced.

The utility model belongs to filter equipment technical field provides a needle filter, include: upper casing, including the liquid inlet pipe and upper casing disc that are connected, the edge of upper casing disc is equipped with a plurality of through -hole that passes through upper casing disc, lower casing, including the liquid outlet pipe and lower casing disc that are connected, edge structure, the circumferential of upper casing disc and lower casing disc is covered, to carry out sealed connection to upper casing and lower casing, when upper casing and lower casing assembly, upper casing disc cover is covered on lower casing disc, the circumferential of upper casing disc and lower casing disc is poured to form the edge structure through the pouring process, the edge structure at least partial access to the through -hole, and after forming, the card is established in the through -hole, the edge structure of the utility model can bear higher pressure, avoid in the use process too high pressure leads to filter membrane breakage, and when the liquid inlet pipe liquid, can increase burst pressure, improve liquid flow rate.

An arrangement for blocking / unblocking a fluid flow comprises: a component delimiting a fluid passage to conduct a fluid from a high pressure side to a low pressure side; a bursting disk at least indirectly attached to the component and separating the high and low pressure sides to close the fluid passage; a support element on the low pressure side, which supports the bursting disk to withstand a fluid pressure on the high pressure side that exceeds a nominal bursting pressure of the bursting disk but that is lower than a maximum pressure; and a controllable actuator actuatable for unblocking the fluid passage. To unblock the fluid passage, the actuator is arranged to destroy or damage the support element such that a fluid pressure on the high pressure side of the bursting disk exceeding the nominal bursting pressure causes the bursting disk to burst.

The invention discloses a device and method for testing the bursting pressure of a bursting disc in a high-pressure air blasting cartridge, and belongs to the technical field of coal mine gas control. The device comprises a medium booster pump, a high-pressure rubber pipe, a pressure meter and a blasting bag; the medium booster pump is connected with the blasting bag through a high-pressure rubber pipe, the blasting bag is composed of two parts which are detachably connected, the two parts are communicated, a blasting piece is arranged at the communication position of the two parts, and the two parts are connected through threads to form the whole blasting bag. And the pressure meter is connected to one part of the blasting bag. The blasting bag is in a detachable connection mode, the blasting piece is convenient to install and replace, the compressibility of water is fully utilized, the water can be compressed to hundreds of atmospheric pressure states from a normal pressure state within a short time, and the pressurization time is shortened; high-pressure water can be instantly decompressed after the rupture disk is ruptured, and flows in a normal-pressure state, so that high-pressure air blasting shock wave injury accidents are prevented.

The utility model relates to the technical field of tank body models, and discloses an all-directional protection tank body model structure which comprises a fixing table, a first fixing seat is fixedly installed on the left side of the top of the fixing table, and a second fixing seat is fixedly installed on the right side of the top of the fixing table. A tank body model body is fixedly installed on the top of the first fixing base and the top of the second fixing base, the tank body model body comprises an outer tank body, the surface of the outer tank body is coated with an ultraviolet-proof coating, an inner tank body is arranged in the tank body model body, and an anti-leakage layer is fixedly installed on the inner side of the inner tank body. The all-directional protection tank model structure can resist composite threats such as mechanical impact, chemical corrosion, electromagnetic interference and extreme temperature at the same time, the impact resistance is improved, the burst pressure tolerance value is improved, the anti-seismic property meets the intensity requirement, the corrosion protection service life is prolonged, the ultraviolet aging resistance is improved, the wear resistance is improved, and the leakage early warning response time is achieved.

The invention discloses an integrated inspection method for implanting an optical fiber into a fiber-wound gas cylinder, and particularly relates to the technical field of composite material pressure vessel quality inspection, which comprises the following steps: step 1, initial state inspection; step 2, carrying out graded pressurization synchronous testing; step 3, capturing failure critical point data; step 4, integrated qualification judgment: judging that the gas cylinder is qualified when meeting the following two conditions at the same time, otherwise, judging that the gas cylinder is unqualified: a) structural strength conditions: the bursting pressure Pb is greater than or equal to rated design bursting pressure or the fatigue cycle index Nb is greater than or equal to rated design fatigue cycle index; b) sensing function conditions: before the pressure reaches 0.9Pb or the cycle index reaches 0.9 Nb, the reflection intensity attenuation delta I / I of all sensing channels is less than or equal to 50% and the data is not interrupted; 5, generating a digital twinborn report; the curve family of the method reflects the continuous distribution rule in the axial direction and the annular direction of the bottle body, and visual recognition of the consistency of the local yield and the overall loading of the structure is achieved.

This application relates to the field of oil production tools, and more specifically, to an oil drainer with blowout and sand prevention functions, and a method for using the oil drainer. In this application, when the foot valve is engaged with the main body, crude oil cannot be drawn. Thus, during well workover operations, the second drain hole is aligned with the first drain hole to drain the oil, allowing the well fluid containing crude oil in the tubing to be discharged, for example, into the annular space between the tubing and casing. This prevents blowout accidents caused by excessive bottom hole pressure during workover operations. When the foot valve is separated from the main body, crude oil can be drawn, ensuring the normal operation of oil pumping. When the drainage volume of the two drain holes is insufficient, pressure can be applied to the well from the wellhead. When the force acting on the rupture disc reaches the rupture pressure, the rupture disc breaks, connecting the drain holes and effectively increasing the drainage volume. In some embodiments of this application, a filter screen is disposed inside the main body, and the filter screen has mesh openings for sand prevention. During oil pumping operations, the filter screen is always in operation to prevent sand and gravel at the bottom of the well from clogging the drain holes.

The invention provides an anti-instability guide sleeve device and an air spring, the anti-instability guide sleeve device comprises a leather bag guide sleeve and a protective cover, the leather bag guide sleeve surrounds the outer side of a leather bag, the inner side face of the leather bag guide sleeve is attached to the outer side face of the leather bag, and the leather bag guide sleeve guides the rolling movement of the leather bag. The protective cover surrounds the outer side of the leather bag guide sleeve, and the inner side face of the protective cover is sequentially attached to the lower end of the outer side face of the leather bag guide sleeve and the outer side face of the leather bag from top to bottom. The length of an original leather bag guide sleeve is shortened, the distance reserved after the leather bag and the leather bag guide sleeve are buckled and pressed is increased, the blasting limit is increased, and the problems that the blasting pressure is too small and the working stability of the air spring is low due to the fact that the diameter of a rolling area is increased are solved on the basis that the leather bag machining difficulty is not increased.

This invention relates to the field of alloys, and more particularly to a high-strength, high-corrosion-resistant copper alloy tube, its preparation method, and its applications. The copper alloy tube, by mass percentage, comprises: Sn: 0.03%~0.25%, Mn: 0.003%~0.10%, Ni: 0.08%~0.20%, P: 0.015%~0.030%, with the balance being Cu and unavoidable impurities, and the Cu content being greater than 99.5%. The mass percentages of Sn (a) and Mn (b) satisfy: 0.20% ≤ a + 6b ≤ 0.40%. Furthermore, it achieves the same target burst pressure P as a TP2 copper tube of the same specification. m When the minimum wall thickness t required for the copper alloy tube is t≤0.9×t0, this invention introduces manganese to partially replace tin, thereby reducing the cost of the alloy and improving its corrosion resistance while maintaining the tensile strength of the copper alloy tube ≥250MPa.

The present disclosure relates to an insert and system of installing the same. The insert includes a tapered core and a cylinder. The core releasably secures to an installation device which includes a depth stop or a depth control to control the installation depth of the insert. The insert may be provided in a tray that allows for easier handling of the inserts and installation thereof in installation holes, for example in a hydraulic manifold. In some cases, the core includes a threaded hole to releasably secure the insert to the installation device, thus allowing the installation device to pull the core into the cylinder. The core and cylinder may be made of metallic materials such as steels, steel alloys and others. In some cases the insert can withstand blow out pressures of 40,000 psi or higher.

This invention discloses a high-strength aluminum alloy fin material for air separation thermal management and its preparation method, relating to the field of aluminum alloy material technology. The chemical composition, by weight percentage, is: Fe: 0.15-0.65%, Si: 0.15-0.65%, Cu: 0.05-0.25%, Mn: 0.9-1.5%, Zr: 0.05-0.25%, with optional elements including Ti: 0-0.30%, Zn: 0-0.1%, La: 0-0.1%, Ca: 0-0.1%. The content of a single impurity is ≤0.05%, the total impurity content is ≤0.15%, and the remainder is Al and unavoidable impurities. The weight ratio of Fe to Si is 0.9-1.2:1. This invention, through basic strengthening with Mn and Zr, combined with composite microalloying of Ti / La / Ca / Zn, forms a stable and dispersed strengthening phase. After brazing, the tensile strength is ≥165MPa, and can reach up to 205MPa, which is significantly better than the traditional 3003 alloy (only 95MPa after brazing), effectively improving the burst pressure and structural stability of the equipment.

The utility model belongs to the technical field of batteries, and particularly discloses an explosion-proof valve assembly structure and a battery cell, the explosion-proof valve assembly structure comprises a sealing ring, an explosion-proof valve and a compression ring, a first sinking table is arranged on the end face of a shell in the circumferential direction of a blast hole, and a mounting groove for accommodating the sealing ring is formed in the bottom wall of the first sinking table; the anti-explosion valve is embedded in the first sinking table and enables the sealing ring to be tightly pressed on the groove wall of the installation groove. The pressing ring is connected to the shell in a welded mode, and the anti-explosion valve is pressed on the first sinking table through the pressing ring. Therefore, the explosion-proof valve is fixedly mounted on the top cover plate. In the assembly structure, the explosion-proof valve made of aluminum and the shell made of stainless steel are assembled well, and sealing is reliable. And the explosion-proof valve made of the aluminum material has the advantages of light weight, high nick residual thickness, low bursting pressure value and low annealing cost. The pressing ring and the shell are made of the same material, and the welding quality between the pressing ring and the shell is good. The utility model further provides a battery cell which comprises the explosion-proof valve assembly structure.

The utility model provides a kind of air bag without wrinkle mark after inflating, the air bag is six petal plum blossom, and is spliced into by upper piece and lower piece, and rounded corner design is used to form arc concave between two adjacent arc convex parts, the edge of upper piece and lower piece is tightly connected to form reserved part, gas hole is set up at the edge of any arc convex part and installs inflation interface. By reserving the position that will be deformed after inflating in advance, the problem that will be deformed at the established position after inflating is solved, so that the problem of large deformation and deformation position randomness is avoided;The design of reserved part makes the deformation amount of air bag after inflating small, so that the abnormal sound generated when air bag deforms greatly is eliminated;The overall shape adopts the design of six petal plum blossom, rounded corner design is used to form arc concave between two adjacent arc convex parts, the sharp corner with greater stress such as wrinkle mark after air bag inflating is eliminated, stress concentration is avoided, greater burst pressure can be obtained, and it is safer in use.

This invention discloses a method for predicting the burst pressure of air springs by fusing finite element analysis and Weibull distribution. The method involves the following steps: Step 1, establishing and simplifying a three-dimensional model based on the actual sample size of the air spring; Step 2, defining the material properties of the rubber matrix, cord layer, cover plate, and piston based on the actual air spring material; Step 3, analyzing the burst damage mechanism of the rubber and cord, defining and embedding damage subroutines for each component (rubber matrix and cord layer) of the rubber airbag; Step 4, extracting the simulated burst pressure and maximum cord stress based on Abaqus simulation results, and introducing Weibull distribution probability to calculate the burst pressure; Step 5, based on the experimental burst pressure and the predicted burst pressure, feedback correction of the Abaqus model parameters to reduce simulation errors. This invention achieves rapid prediction of air spring burst pressure based on a small sample burst test data, providing an intuitive indication of the air spring burst location and burst pressure.