53 results about "Material Erosion" patented technology

The invention relates to the technical field of high-corrosion-resistance stainless steel pipe processing, and discloses a high-corrosion-resistance high-molybdenum stainless steel pipe processing technology based on gradient carbide design, which comprises the following steps: applying an axial gradient magnetic field in a stainless steel pipe rolling process, and combining with dynamic strain rate matching rolling to promote molybdenum atom grain boundary migration and inhibit carbide coarsening, so as to obtain a high-molybdenum-resistance stainless steel pipe. Nano carbide smaller than or equal to 50 nm is formed on the surface layer, and submicron carbide of 200-500 nm is formed on the core part; after rolling, micro-arc oxidation and phosphonic acid group silane dipping are immediately carried out to form a self-repairing passivation film; and finally, an alternating magnetic field and pulse current are adopted for cooperative annealing, and a grain boundary molybdenum-poor region and residual stress are eliminated. Through magnetic field-chemical-thermal multi-field coupling, the material has erosion corrosion resistance of a gradient carbide structure, dynamic passive film self-repairing and low-temperature high toughness, and is suitable for long-acting protection of deep sea oil and gas pipelines.

The invention belongs to the technical field of surface engineering, and particularly relates to a laser cladding iron-based corrosion-resistant and wear-resistant coating and a preparation method thereof. The invention relates to a laser cladding iron-based corrosion-resistant and wear-resistant coating which comprises the following iron-based alloy powder components in percentage by mass: 0.2-0.4% of C; 2.0 to 3.0% of B; the content of Cr is 12.0 to 16.0 percent; 0.5 to 1.0 percent of Ti; 0.5 to 1.5 percent of Si; 0.5 to 1.0 percent of Ni; 0.3 to 0.7% of Ce; s is less than 0.03%; p is less than 0.045%; and the balance of Fe. The coating has the beneficial effects that the coating takes the iron-based alloy powder as a raw material, and the iron-based alloy powder is uniformly cladded on the surface of the H13 steel by utilizing a laser directional energy deposition technology, so that a compact and uniform corrosion-wear-resistant cladding layer is formed, and the service life of the material under the working condition of erosion corrosion of molten aluminum is remarkably prolonged.

The invention belongs to the technical field of erosion corrosion experiment testing, and particularly discloses an erosion corrosion experiment device and method for liquid-solid two-phase flow immersion jet flow, a cooling system is designed for solving the problem that the temperature of an erosion corrosion solution is increased due to the throttling effect, the heat dissipation area of a circulating erosion system is increased through finned tubes, and the heat dissipation efficiency is improved. And the erosion corrosion solution flowing through the finned tube can transfer heat to the liquid in the heat exchange groove, so that the temperature of a fluid medium of the erosion corrosion solution in the circulating erosion system is reduced. According to the invention, the included angle between the sample and the nozzle can be changed through the angle adjusting mechanism so as to test the material damage condition under the impact of different angles and different flow velocities, so that the real-time monitoring of the electrochemical process of the liquid-solid two-phase flow damaged material is realized; the erosion corrosion damage process and mechanism of a material in a multiphase flow environment can be researched conveniently, and gas can be injected into the immersion jet tank through the gas storage bottle and the gas injection pipe so as to realize an under-pressure experiment for dissolving acid gas.

The utility model discloses a coast subgrade framework in the field of coast subgrades, which aims to solve the problem that a concrete wall is easy to corrode and crack under long-time erosion corrosion of seawater in the prior art, and comprises a stainless steel plate, a wave dissipation plate for buffering sea wave impact and a buffering component, the stainless steel plate is mounted on a coastal surface of a coast subgrade, and the buffering component is mounted on the coastal surface of the coast subgrade. The wave dissipation plates are arranged on the stainless steel plate, the buffering assembly is arranged between the stainless steel plate and the wave dissipation plates, the wave dissipation plates are sequentially arranged on the stainless steel plate, and the ends of every two adjacent wave dissipation plates are arranged in an overlapped mode. The wave dissipation plates are sequentially arranged on the adjacent sea surface of the coast roadbed, the ends of every two adjacent wave dissipation plates are overlapped, the hinge pieces are arranged, when the wave dissipation plates are impacted by sea water, the wave dissipation plates can rotate by a certain angle, the wave dissipation plates rotate to the overlapped parts close to the upper ends, the impact of the sea water is buffered through the two wave dissipation plates at the same time, and the wave dissipation effect is improved. The buffering effect is improved, and the service life of the wave dissipation plate can be prolonged.

This invention discloses a method, equipment, medium, and product for quantitatively assessing the risk of erosion damage to pressure equipment, relating to the safety of pressure equipment in the petrochemical and chemical industries. The method includes: determining the damage form of the equipment; calculating a local / uniform thinning factor based on the damage form; calculating an equipment correction coefficient based on the local / uniform thinning factor, a general condition factor, a mechanical factor, and a process factor; calculating the probability of erosion corrosion failure based on the equipment correction coefficient, a management system evaluation coefficient, the average failure probability of similar equipment, and an impact coefficient for defects exceeding standards; calculating the leakage consequence area; determining the consequences of erosion corrosion failure based on the leakage consequence area; and establishing a two-dimensional risk matrix based on the probability of erosion corrosion failure and the consequences of erosion corrosion failure. The two-dimensional risk matrix is ​​used for real-time quantitative assessment of erosion risk. This invention can effectively guide the prevention and control of erosion corrosion risks in the petrochemical and chemical industries.

This utility model relates to the field of biogas hydrogen sulfide pipeline technology and discloses a protective structure for biogas hydrogen sulfide pipeline corrosion, including a transmission pipeline and a fixing sleeve. A spraying mechanism is fixedly installed on the side of the transmission pipeline, and a flow rate regulating mechanism is fixedly installed on the inner wall of the fixing sleeve. The flow rate regulating mechanism includes a bend, and a connecting block is fixedly installed on the inner wall of the bend. First, the speed of the drive motor is adjusted by the controller, thereby adjusting the flow rate generated when the fan blades rotate. Then, the drive motor is turned on, and the rotation of the drive motor drives the fan blades to rotate, thereby drawing air from outside the bend into the bend. The air is then diverted through the bend and split into eight transmission pipes, and then transmitted through a filter plate to the inside of the transmission pipeline. This adjustment of the flow rate inside the transmission pipeline helps to reduce the corrosiveness of hydrogen sulfide to the transmission pipeline. By controlling the upper limit of the flow rate, erosion corrosion is minimized, thus improving the protection of the transmission pipeline.

The application discloses a kind of test device and method for general erosion corrosion in fast reactor coolant environment, it is related to nuclear power material testing technical field, including corrosion kettle, heating device, stirring device and object table, heating device is used to heat corrosion kettle, stirring device includes rotary drive device and stirring assembly, the fixed end of rotary drive device is fixedly arranged on corrosion kettle, the driving end of rotary drive device is fixedly connected with stirring assembly, stirring assembly is inserted into corrosion kettle, for stirring the cooling medium in corrosion kettle, object table is arranged in corrosion kettle for carrying corrosion sample, gas inlet is provided on corrosion kettle, gas inlet is used to pass into hydrogen gas or oxygen gas mixture, to adjust the oxygen concentration in corrosion kettle.The application can truly reproduce the environment of flow medium erosion, corrosion deterioration and oxygen concentration synergistic effect under actual working condition.

The invention relates to the field of oil and gas well drilling and production, and discloses experimental equipment for simulating erosion corrosion of an oil and gas well at high temperature and high pressure and a use method thereof. The experimental equipment comprises an erosion corrosion fluid module, a corrosion fluid module, a reaction kettle and a damage analysis module. The erosion corrosion fluid module is used for manufacturing an erosion corrosion fluid material; the corrosive fluid module is used for manufacturing corrosive fluid materials. The reaction kettle is provided with a reaction chamber for mounting an experimental object, and the experimental object is a combined body comprising an oil pipe, a sleeve and a cement sheath; the experimental object and the reaction chamber act together to form a first chamber in the oil pipe and communicated with the erosion corrosion fluid module, a second chamber located between the oil pipe and the casing pipe and communicated with the erosion corrosion fluid module, and a third chamber located between the casing pipe and the cement sheath and communicated with the erosion corrosion fluid module. And the damage analysis module is used for analyzing the experimental object and obtaining an erosion-corrosion analysis result of the experimental object, so that the erosion-corrosion resistance test experiment of the material under the complex underground working condition is completed.

The invention discloses an erosion corrosion early warning method, device and equipment for a tail gas pipeline of a reduction furnace. The method comprises the following steps: firstly, acquiring multi-source real-time data of a target monitoring point in the tail gas pipeline of the reduction furnace; based on the multi-source real-time data, obtaining a future silicon powder mass concentration prediction sequence and a future airflow velocity prediction sequence; inputting the data into a pre-constructed dynamic wear rate model and an effective impact energy accumulation model, and respectively calculating to obtain a first future pipe wall residual thickness sequence and a second future pipe wall residual thickness sequence; comparing the predicted pipe wall residual thickness at each future moment in the future pipe wall residual thickness sequence with a preset pipe wall residual thickness safety threshold, and determining a first predicted residual life and a second predicted residual life; and finally, based on the first predicted residual life and the second predicted residual life, generating early warning information of the pipeline eroded and corroded by the silicon powder. According to the invention, high-precision and foresight early warning of the erosion corrosion risk of the tail gas pipeline of the reduction furnace can be realized.

The utility model discloses a steel ladle lining refractory material corrosion detection device which comprises a steel ladle mechanism and a sliding rail, a supporting column is fixedly installed on the sliding rail through a moving trolley, the top of the supporting column is fixedly connected with a supporting plate, a high-definition focusing camera is installed on the supporting plate through an installation assembly, and a cleaning mechanism is arranged in front of the high-definition focusing camera. The swing rod is rotationally connected with the right side of the supporting plate, the left side of the swing rod is provided with a cleaning brush assembly with a quick mounting and dismounting function, a guide groove is formed in the swing rod, and the bottom of the supporting plate is fixedly connected with a driving roller motor through a support. According to the steel ladle lining refractory material corrosion detection device, when dust adheres to the surface of a lens of a high-definition focusing camera, a cleaning mechanism is started to enable a cleaning brush to swing left and right to clean the lens, meanwhile, the cleaning brush can be rapidly replaced after being damaged, and the practicability of the device in use is improved.

The invention provides duplex stainless steel for a concentrated sulfuric acid environment and a preparation method and application of the duplex stainless steel, and the duplex stainless steel comprises the following components in percentage by weight: less than or equal to 0.03 wt% of C, less than or equal to 1.50 wt% of Mn, less than or equal to 2.0 wt% of Si, less than or equal to 0.03 wt% of P, less than or equal to 0.02 wt% of S, 24.5-27.0 wt% of Cr, 7.0-9.0 wt% of Ni, 3.5-4.5 wt% of Mo, 3.0-4.0 wt% of Cu, 0.50-1.0 wt% of W, 0.20-0.30 wt% of N and the balance of Fe and inevitable impurities. Through alloying of low carbon, high chromium, added nickel, copper, tungsten, nitrogen and other elements and coordination of all the components, the duplex stainless steel has good obdurability, sulfuric acid uniform corrosion resistance, erosion corrosion resistance, cavitation corrosion resistance and the like. The prepared duplex stainless steel can serve as an equipment material which is subjected to concentrated sulfuric acid and long-term scouring of fluid, the service time of the material can be remarkably prolonged, the maintenance cost and the construction period of the material are reduced, and the safety reliability and the production efficiency of fluid equipment operation are improved.

The invention provides a method and a device for accurately controlling and detecting sand content in an erosion experiment, and relates to the technical field of pipeline multiphase flow erosion corrosion, the device comprises a sand amount control part used for adjusting the sand adding amount of solid sand, so that a medium solution and the solid sand are uniformly mixed to obtain a sand-containing solution; and the sand amount detection part is used for detecting the sand content of the sand-containing solution. The invention provides the method and the device for controlling and detecting the sand content, which are simple, accurate and easy to realize. When the method and the device are applied to the pipe flow test, the problems of sand deposition, uneven sand distribution in a solution medium and the like are solved, the real flowing and scouring conditions of the pipeline are accurately reduced, and a foundation is laid for accurately analyzing the scouring corrosion mechanism.

The invention relates to the technical field of road engineering materials, and discloses an erosion function tester for highway subgrade filler hydraulic erosion, which comprises a water pump, the pressure pipeline and the water pump form a water flow loop; the electromagnetic flowmeter is used for measuring the water flow velocity; the sample pipe is used for accommodating a sample and is mounted at the lower part of the pressure pipeline; the soil jacking piston is used for jacking out the sample in the vertical direction; the erosion monitoring system is used for monitoring the surface elevation change of the sample in a non-contact manner; the data processing system is electrically connected with the electromagnetic flowmeter, the erosion monitoring system and the water pump and controls the water pump to generate a preset water flow velocity; and calculating the water flow shear stress acting on the surface of the sample according to the water flow velocity measured by the electromagnetic flowmeter. Friction resistance coefficients and shear stress are calculated through a Muslim diagram fluid mechanics relation, and full-chain quantitative analysis from water flow parameters to material erosion characteristics is realized in combination with a non-contact laser monitoring technology.

The present invention discloses a rotary coupon corrosion experiment device, which includes a reaction kettle and a crucible. A sample is suspended by a connecting rod above the crucible. An upper condenser plate, a heat shield plate, a lower condenser plate and a graphite felt are arranged on the connecting rod. A gas supply component and a lifting and rotating component are also arranged on the connecting rod. At the same time, the present invention also discloses a method for rotary coupon corrosion experiment, in which the sample is extended into the corrosion medium in the crucible for rotation to conduct the erosion corrosion experiment of the sample and obtain the erosion corrosion performance of the sample. The present invention provides a sealed reaction environment through the reaction kettle to prevent the volatilization and leakage of the corrosion medium during the experiment. A connecting rod is arranged to suspend the sample, and the connecting rod extends out of the reaction kettle and is connected to the lifting and rotating component to drive the connecting rod to lift and rotate, thereby driving the sample to lift and rotate, realizing the entry and exit of the sample from the corrosion medium, and realizing the rotation of the sample in the corrosion medium for erosion corrosion.

The invention discloses a preparation method of a heterogeneous bimetal metallurgical composite casing pipe for seabed transportation. The preparation method comprises the following steps: S1, pretreatment of a base pipe; s2, material preparation, wherein 80-99.99 wt.% of Ni-based alloy powder and 0.01-20 wt.% of nano ceramic particles are subjected to ball milling to be evenly mixed, and mixed powder is obtained; s3, laser cladding is conducted, specifically, a coaxial powder feeding mode is adopted, and the mixed powder is subjected to laser cladding on the surface of the base tube; and S4, a composite layer is formed, specifically, under the action of a laser heat source, the Ni-based alloy is molten and metallurgically bonded with the base tube, the nano ceramic particles are not molten and are evenly dispersed and distributed in a cladding layer, and the wear-resistant and corrosion-resistant composite layer with the thickness being 0.2-3 mm is formed. Nano-scale ceramic particles and Ni-based alloy powder are compounded, and the nano-scale ceramic particles are uniformly dispersed and distributed in a cladding layer matrix by utilizing the high-temperature stability and non-melting characteristic of the nano-particles in the laser cladding process, so that the wear resistance of the composite layer is remarkably improved, and the material loss in the erosion corrosion process is inhibited.

The application discloses a safety measurement method, device and equipment of a multiphase flow pipeline and a medium, relates to the technical field of oil exploitation, and comprises the following steps: applying an alternating excitation signal to different electrode systems arranged on a target pipeline to obtain first electric impedance spectrum data and second electric impedance spectrum data of the target pipeline in a multiphase flow state. The first electric impedance spectrum data is converted into a complex dielectric constant, and a relaxation frequency is determined from the complex dielectric constant; according to the relationship between the relaxation frequency and the particle size, the crystal particle size is determined. According to the crystal particle size and the erosion time, the erosion loss is determined. The equivalent circuit model matched with the second electric impedance spectrum data is fitted to determine the corrosion characteristics. Based on the electric impedance spectrum technology, the accurate measurement of the particle size and the erosion corrosion of two scenes is realized, the method has the characteristics of simple operation, non-invasiveness and high measurement precision, and the safety transportation of the two-phase flow pipeline is ensured.

The invention relates to the technical field of continuous casting production, in particular to a continuous casting tundish continuous casting furnace number increasing method and a continuous casting system.The method comprises the steps that the thickness of a working layer of a tundish stopper rod area is set to be 80 mm, the thickness of a working layer of an impact area is set to be 100 mm, the thickness of a retaining wall is set to be 110 mm, a composite ceramic stopper rod with the surface of a rod head coated with a ZrO2-C coating is adopted, casting powder is used, and the continuous casting furnace number is increased; the slag line comprises, by mass, 5.69% of F <->, 32.83% of SiO2 and 38.17% of CaO, and the position of the slag line is adjusted by 5 mm every 15 min through an automatic control system. Through multi-dimensional collaborative optimization of the thickness of the tundish refractory material, improvement of the material of the stopper rod, adjustment of the components of the casting powder and dynamic control of the position of the slag line, the number of continuous casting furnaces is remarkably increased, and the industrial problems of tundish refractory material erosion, unstable flow control and short service life of the water gap are solved.

The invention belongs to the technical field of indirect air cooling system equipment protection, and relates to a preparation method of an SCAL type indirect air cooling system aluminum heat exchange pipe orifice and an aluminum heat exchange pipe. According to the invention, the aluminum heat exchange pipe orifice is designed into the horn mouth with a certain taper, so that the fluid dynamic condition of the pipe orifice is changed, and the flow erosion corrosion rate of the pipe orifice part is favorably reduced. The horn mouth length is obtained according to the original pipe diameter and the horn mouth taper, the horn mouth length is reasonably determined, and it is guaranteed that the horn mouth shape can fully play a role in reducing the flow erosion corrosion rate. And carrying out laser cladding on the horn mouth of the aluminum pipe orifice by adopting nickel-based alloy powder. And a nickel-based alloy coating is formed on the surface of the horn mouth of the aluminum pipe orifice, so that the wear resistance and corrosion resistance of the surface of the pipe orifice are enhanced. Through innovative design of the pipe orifice structure and strengthening treatment of the surface, the flow erosion corrosion rate of the pipe orifice part is remarkably reduced, and long-term protection of flow erosion corrosion of the aluminum heat exchange pipe orifice is facilitated.

The present application relates to the technical field of metal material corrosion and protection, and particularly relates to a non-passivated metal material erosion corrosion evaluation method based on time-performance coupling, comprising setting test conditions and data collection schemes; synchronously collecting time-performance data; quantitatively determining three critical time nodes for dividing the whole erosion corrosion cycle into stages of different failure risk levels as the quantitative demarcation points of time-performance coupling; dividing the whole erosion corrosion cycle into risk stages; and performing comprehensive evaluation. The present application has the following advantages: based on the nonlinear evolution characteristics of the erosion corrosion damage mechanism, a dynamic evaluation system of time-performance coupling is established, the whole erosion corrosion cycle is divided into stages of different risk levels by quantitatively determining three critical time nodes, the precise mapping of the time dimension and the material performance attenuation process is realized, and the key problem that the traditional method cannot reflect the whole process behavior of the material from the initial damage to the final failure is solved.

The invention provides a method and a system for detecting corrosion characteristics of an oil and gas production and transportation pipe in a hypersalinity CO2 environment. The method comprises the following steps: acquiring apparent velocity and mineralization parameters of the oil and gas production and transportation pipe in a working state; determining bubble stability characteristics of the oil and gas production and transportation pipe according to the apparent velocity, and determining a transition interval of conversion from the bubble to the slug flow according to the bubble stability characteristics and the mineralization parameters; according to the pressure fluctuation data and the mineralization parameters, slippage analysis is conducted on the flowing state of the bubbles, a collapse hot spot area during bubble slippage collapse is obtained, and the collapse pressure gradient of the collapse hot spot area is determined; superposing concentrated breakout of the bubbles in the breakout hot spot area through the breakout pressure gradient and the distribution characteristics of the bubbles to obtain breakout impact strength; and determining the erosion corrosion area of the bubbles to the pipe wall based on the collapse impact strength and vortex distribution of the oil and gas production and transportation pipe. By the adoption of the scheme, the corrosion area can be determined by combining the scouring effect of bubble groups and vortexes on the pipe wall in the process of converting the bubble-shaped flow to the slug flow.

The present application relates to the technical field of shale oil fracturing construction, and particularly relates to a fracturing construction process pretreatment method for ensuring the success rate of shale oil fracturing construction. The method comprises the following steps: performing acid squeezing treatment on shale oil mud before fracturing; based on material erosion theory and a fracture fluid flow model, a dynamic optimization adjustment model of fracturing construction parameters in the low sand ratio slug stage is established; the rock core elastic modulus and Poisson's ratio of the reservoir are measured through indoor rock mechanics experiments; the viscosity and density of the fracturing fluid are measured; the elastic modulus, Poisson's ratio and diameter of the proppant particles are obtained; the obtained parameters are brought into the model in step 2, and the proppant concentration and the fracturing fluid viscosity that can ensure the maximum ER erosion efficiency are obtained in combination with the sand carrying performance of the fracturing fluid. Through effective channel establishment technology and fracture widening and filtration reduction technology, the success rate of shale oil well fracturing construction can be improved.

The invention belongs to the technical field of alloy materials, and particularly relates to a high-strength erosion-corrosion-resistant copper-nickel alloy and a preparation method and application thereof. The high-strength erosion-corrosion-resistant copper-nickel alloy comprises 26%-29% of Ni element, 1%-2% of Fe element, 2%-4% of Mn element, 1.5%-2.5% of Al element, 0.3%-0.5% of Cr element, 0.6%-1% of Nb element and the balance Cu element and inevitable impurities. The copper-nickel alloy material obtained by optimizing the types and contents of elements in the nickel-copper alloy and optimizing the matched thermomechanical treatment process and aging process has excellent comprehensive performance, and particularly has relatively high strength and high-flow-rate sediment seawater erosion corrosion resistance.

The utility model relates to the technical field of powder selecting machines, and discloses a V-shaped powder selecting machine material distributing and scattering system which comprises a V-shaped powder selecting agent shell, a discharging scraper-trough conveyer is arranged on the top of the V-shaped powder selecting agent shell, a plurality of material distributing plates are fixedly connected to the inner side of the bottom of the discharging scraper-trough conveyer, and a combined scattering mechanism is arranged in the V-shaped powder selecting agent shell. The combined scattering mechanism comprises a first side edge plate fixedly connected to the top of the inner side of the V-shaped powder selecting agent shell, and the first side edge plate communicates with the discharging scraper-trough conveyer. According to the combined type scattering lattice, connection is achieved through the bearing plate, mounting and dismounting are convenient and fast, the composite wear-resisting plate lining plates and the wear-resisting plates can be reasonably arranged according to the wind erosion and material erosion conditions, the overall service life of the combined type scattering lattice is prolonged, meanwhile, the small composite wear-resisting plate lining plates are very easy to replace, and the service life of the combined type scattering lattice is prolonged. According to the V-shaped powder concentrator, the time required for maintenance and the multi-stage scattering lattice of manpower resources are greatly shortened, the suspension time of powder in the V-shaped powder concentrator shell can be prolonged, and the powder concentration efficiency is improved.

The application discloses a liquid lead and bismuth erosion corrosion resistant composite coating and a preparation method and application thereof, and relates to the technical field of surface protection. The method comprises the following steps: spraying a FeCrAlY coating on the surface of a substrate, performing remelting treatment and light finishing treatment on the FeCrAlY coating, and pre-oxidizing the coating. The FeCrAlY coating is sprayed on the surface of the substrate, and then the FeCrAlY coating is subjected to remelting treatment, so that the interlayer interface between the particles in the FeCrAlY coating disappears, and the effect of hole sealing is achieved. The light finishing treatment can polish the coating on the surface of the substrate to be flat. When the liquid lead and bismuth eutectic alloy flows, circulates and cools, the erosion corrosion effect of the liquid lead and bismuth eutectic alloy on the coating is reduced, and the service life of the coating is prolonged. Finally, the pre-oxidation treatment is performed on the surface of the coating, a continuous and dense thermal growth oxide layer is generated in situ on the surface of the coating, the wettability of the liquid lead and bismuth alloy is effectively reduced, and the long-time service stability is improved.

A stress corrosion device under fluid scouring conditions belongs to the technical field of erosion corrosion tests. It includes a frame. A power input device is installed on the bottom plate of the frame. A liquid storage tank and a hydraulic tensile machine are installed on the frame. A cover plate is installed on the top of the liquid storage tank. A fixture is installed in the liquid storage tank, and the scouring attack angle is changed by rotating the fixture. A usage method of the stress corrosion device under fluid scouring conditions includes the following steps: Connect the working electrode wire to the top end of the specimen; Install the processed specimen on the fixture; Tension the specimen; Install the tensioned specimen into the liquid storage tank; Fill the liquid storage tank with the experimental medium; Close the cover plate and fasten the mechanical lock; Start the motor and the heating rod, and start the electrochemical test after the flow rate and temperature of the experimental medium are stable. By rotating the fixture, the fixing column is inserted into the fixing groove to change the scouring attack angle, which solves the problem that the previous erosion corrosion test device cannot apply tensile stress and change the attack angle.

The invention discloses a method, a device, equipment and a medium for determining the erosion rate of an engine material, and relates to the technical field of engine analysis, the method for determining the erosion rate of the engine material comprises the following steps: determining the radiance of target metal according to a characteristic spectral line of the target metal in an engine plume spectrum; wherein the target metal is a composition of the engine; in combination with the radiation brightness of the target metal and the engine plume data, carrying out atomic number density inversion on the target metal in the engine plume, and determining the atomic number density of the target metal in the engine plume; in combination with the atomic number density and the engine plume data, combustion chemical equilibrium calculation is conducted on the engine plume, and the total concentration of the target metal in the engine plume is determined; and determining the erosion rate of the engine material according to the total concentration of the target metal in the engine plume. The method can quantify the erosion rate of the structural material of the engine during the cycle operation of the engine.

The embodiment of the invention provides detection equipment. The detection equipment comprises a container, a power mechanism and a sample wafer bracket, the container is used for accommodating a liquid-cooled working medium. The power mechanism comprises a rotating shaft and fan blades, the fan blades are located in the liquid cooling working medium, and the rotating shaft can drive the fan blades to rotate so that the liquid cooling working medium can flow in the container and form vortexes. The sample wafer bracket is used for placing at least one layer of sample wafers, each layer of sample wafers comprises a plurality of sample wafers, the plurality of sample wafers are distributed at intervals along the circumferential direction of the rotating shaft, and the sample wafer bracket is positioned between the fan blades and the container along the radial direction of the rotating shaft, so that the sample wafers are positioned in the eddy current of the liquid cooling working medium. According to the detection equipment provided by the embodiment of the invention, the problem of low accuracy of detection data of the detection equipment on the erosion corrosion of the liquid cooling working medium on the cold plate in the related technology is solved.

The invention discloses a gas-liquid-solid three-phase porous jet erosion corrosion experimental device and experimental method, and belongs to the technical field of erosion corrosion experimental testing. The experimental device comprises a jet system, a sand adding system and a gas injection system, the jet system comprises a jet chamber, and a bearing device for mounting a sample to be tested is arranged in the jet chamber; a jet main pipeline is arranged on the jet chamber, the tail end of the jet main pipeline is connected with a nozzle, and the outlet center of the nozzle is over against the surface center of the to-be-tested sample; the sand adding system comprises a sand bearing measuring cylinder, and a bottom outlet of the sand bearing measuring cylinder is communicated with the top of the jet flow main pipeline; the air injection system comprises an air compressor, and the air compressor is connected with a liquid input pipeline through an air injection pipeline; the to-be-tested sample is connected with a copper conductor to serve as a working electrode, and a counter electrode and a reference electrode are further arranged in the jet chamber. The device can be used for gas-liquid-solid three-phase jet flow experiments and under-pressure / non-under-pressure experiment tests, and has wider and practical functions.

The utility model relates to the technical field of pipelines, and provides a pipeline spiral elbow with strong bearing capacity, which comprises an elbow body, connectors are fixed at two ends of the elbow body, a reinforcing structure is fixed on the outer wall of the elbow body, and a turbulent flow structure is arranged on one side in the elbow body. The turbulent flow structure is arranged, the turbulent flow pieces are symmetrically distributed in an inclined mode, fluid can be guided to flow spirally, turbulent flow and vortex are reduced, pressure loss is reduced, conveying efficiency is improved, a flow guide system composed of the center piece and the limiting pieces can evenly distribute fluid impact force, local erosion corrosion is avoided, and the service life of the elbow is prolonged. According to the pipeline spiral elbow with the high bearing capacity, the limiting block is connected with the elbow body in a clamped mode through the limiting groove, the damaged turbulent flow assembly can be conveniently and rapidly disassembled and replaced, the maintenance cost is reduced, the device has the functions of turbulent flow of liquid in the pipe and convenient and rapid disassembly, and the service life of the pipeline spiral elbow with the high bearing capacity is prolonged.