23 results about "Material Erosion" patented technology

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 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 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 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 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.

The application provides a multiphase flow erosion corrosion test device and method. In the multiphase flow erosion corrosion test device: a plurality of gas tanks are connected with a plurality of pressure regulating valves one by one, the plurality of pressure regulating valves are connected with a gas storage tank, the gas storage tank is connected with a pressure reducing valve, the pressure reducing valve is connected with an adjustable flow valve, the adjustable flow valve is connected with a first heater, the first heater is connected with a first ball valve; a second ball valve is connected with a second heater, the second heater is connected with a mud pump, the mud pump is connected with a solid-liquid mixing tank; a third ball valve is connected with a booster pump, the booster pump is connected with a third heater, the third heater is connected with a fourth ball valve and a fifth ball valve respectively, the fourth ball valve and the fifth ball valve are connected with an erosion cavity and a test pipeline one by one; the third ball valve is connected with the first ball valve and the second ball valve respectively.

The invention provides a circuit breaker contact ablation prediction method, system and device and a medium. The method comprises the steps that spectral data of electric arcs between circuit breaker contacts are collected; processing the spectral data through a first non-orthogonal Gaussian processor to obtain a first processing result; extracting wavelength domain parameters; wherein the first non-orthogonal Gaussian processor is a wavelength domain processor; processing the wavelength domain parameter through a second non-orthogonal Gaussian processor to obtain a second processing result; extracting time domain parameters; wherein the second non-orthogonal Gaussian processor is a time domain processor; acquiring a mass loss parameter corresponding to the circuit breaker contact; and selecting a solving parameter, and substituting the mass loss parameter and the solving parameter into the linear regression model to realize the prediction of the ablation of the circuit breaker contact. According to the method, the characteristic spectral line information of the material elements in the spectrum can be effectively mined, and the material ablation degree is deduced by analyzing the spectral information, so that the accuracy of predicting the ablation of the circuit breaker contact is effectively improved.

The present application relates to a kind of regeneration tower corrosion prevention and control method, comprising the following steps: S1, to the regeneration tower is carried out multiphase flow software simulation extraction regeneration tower different parts several positions flow field parameters calculate chemical corrosion and erosion corrosion;S2, to the regeneration tower accessory pipeline is carried out multiphase flow software simulation extraction regeneration tower accessory pipeline different parts several positions flow field parameters calculate chemical corrosion and erosion corrosion;S3, according to the analysis data of step S1 and step S2, the corrosion risk behavior analysis of regeneration tower and its accessory pipeline is carried out, confirms that chemical corrosion is mainly function;S4, according to the analysis result of step S3, by reducing the concentration of hydrogen sulfide in water to reduce the rate of chemical corrosion, by improving temperature to reduce the concentration of hydrogen sulfide dissolved in water to improve process conditions;S5, the process conditions of regeneration tower after step S4 are improved are used in alcohol amine method desulfurization system.A beneficial effect is that the corrosion of regeneration tower in alcohol amine method desulfurization system is relieved, prevention and control.

This utility model belongs to the field of material erosion testing technology, and particularly relates to an equivalent test device for compressor blade erosion. It includes a compressed air pump, a sand tank, an erosion pipe, an erosion chamber, and a sample holder. The sample holder is characterized by having a sample slot sealed on three sides, with a baffle on the open side of the slot. The sample holder has ear plates on both sides; one ear plate is movably connected to the side wall of the erosion chamber via a half-shaft, and the other ear plate is movably connected to the opposite side wall of the erosion chamber via a half-shaft. The outer end of either half-shaft is connected to the output shaft of a worm gear reducer, which is mounted on the outer side wall of the erosion chamber. The beneficial effects of this utility model are: by accurately controlling the quality of the abrasive material flowing over the surface of the flat material sample, it achieves precise simulation of the erosion effect, providing accurate data support for equivalent analysis, which is beneficial for guiding material optimization and ultimately extending the service life of compressor impeller products.

This invention proposes a performance analysis method, apparatus, equipment, and medium for cemented riprap protective structures, relating to the field of performance testing technology for cemented riprap protective structures. Addressing the shortcomings of existing technologies in studying gridded cemented riprap, such as the disconnect between macroscopic scour morphology and material performance evolution, and the inability of short-term test results to reflect performance degradation over decades of service, which prevents the establishment of a quantitative relationship between material degradation and structural failure and hinders long-term protective performance prediction, this invention obtains scour pit volume evolution data through flue model tests, establishes a strength attenuation model by combining it with material erosion tests, equates scour damage under wave-current loading to material erosion time, and corrects material strength in real time based on the equivalent damage age, ultimately constructing a scour pit development rate model to predict long-term protective performance.

The application relates to a resistance probe for material corrosion monitoring, which comprises a shell and a reference electrode and a corrosion electrode arranged in series on the shell, the reference electrode is sealed in the shell by being isolated from the outside through a packaging medium, and the corrosion electrode is exposed outside the shell; the corrosion electrode is a continuous non-overlapping coiled curve line structure in one working plane of the shell; the application increases the length of the corrosion electrode through the "Omega" type design, so that the cross-sectional area of the electrode can be increased under the condition that the resistance change is the same, the failure resistance of the electrode to the damage caused by local corrosion of the probe is enhanced, the cross-sectional area of the corrosion electrode is increased, the measuring element is not affected by the machining process during the preparation process, the material surface state of the measuring element is different from the surface state of the monitored equipment, and therefore the health state of the equipment can be more accurately reflected.

The invention discloses a double-channel deslagging device of a molten pool smelting furnace, and belongs to the technical field of non-ferrous metal smelting equipment. The slag discharging device comprises a slag inlet pipe, one end of the slag inlet pipe is communicated with a first slag discharging pipe and a second slag discharging pipe, the first slag discharging pipe, the second slag discharging pipe and the slag inlet pipe form a Y-shaped structure, the first slag discharging pipe and the second slag discharging pipe are symmetrically distributed with the axis of the slag inlet pipe as the symmetry axis, and the first slag discharging pipe and the second slag discharging pipe are obliquely arranged downwards; the positions of slag outlets of the first slag outlet pipe and the second slag outlet pipe are lower than the other ends of the first slag outlet pipe and the second slag outlet pipe, and a spherical crown flow blocking weir protruding outwards is arranged between the first slag outlet pipe and the second slag outlet pipe. The device can effectively reduce the flow speed of the slag, relieve erosion corrosion and splashing conditions generated in the slag discharging process, and prolong the service life of components such as the slag groove.

The application discloses a kind of basic refractory performance pre-evaluation test methods, belongs to analytical test method technical field.The application can effectively simulate the high temperature, multi-medium erosion working condition that it endures in actual kiln service environment by being made into the crucible body with specific cavity and filling erosion medium to the basic refractory to be measured, and the section is obtained by cutting the crucible body after simulation service, can be directly observed and analyzed erosion depth and erosion morphology by section, provides direct, reliable basis for evaluating material erosion resistance.Compared with traditional physical and chemical index detection, the pre-evaluation method of the application can truly, accurately reflect the performance of material in actual application environment, can effectively evaluate the use performance of basic refractory, provide reliable basis for screening qualified material and prolonging the service life of basic refractory in coke powder fuel regenerator.

The invention discloses a steelmaking process for controlling non-metallic inclusions of a structural steel continuous casting billet for low temperature, and belongs to the technical field of steel, and the steelmaking process specifically comprises the following steps: S1, molten iron pretreatment: controlling the sulfur content of molten iron entering a furnace; s2, converter smelting is conducted, the slag alkalinity at the converter smelting end point is controlled to range from 4 to 7, the phosphorus content at the end point ranges from 0.003% to 0.01%, slag stopping is conducted during tapping, and aluminum is added in the tapping process for preliminary deoxidation; s3, LF refining, wherein lime is adopted for slagging, and an aluminum deoxidizer is adopted for desulfurization operation; s4, RH refining is conducted, aluminum is added into the molten steel before vacuum treatment, the target value of acid-soluble aluminum in the molten steel is adjusted to be 0.020%-0.070%, the vacuum treatment time is 15-35 min, and a calcium line is fed in the RH procedure; s5, continuous casting production is conducted, whole-course protection pouring is adopted, a slag stopping wall and a slag stopping dam are arranged in a tundish, a magnesium-aluminum erosion-resistant stopper rod is used, electromagnetic stirring is adopted in a fan-shaped section, the pulling speed is set to be 0.60-1.25 m / min, and the floating time of inclusions in molten steel is guaranteed; the process can effectively reduce the inclusions of the steel plate produced by the continuous casting billet and improve the purity of the molten steel.

The invention discloses a test device and a test method for testing the erosive wear performance of a cement-based material, and relates to the technical field of cement-based material erosive tests. The testing device for testing the erosive wear performance of the cement-based material is characterized by comprising a scouring box, a test block fixer is arranged in the middle of the inner cavity, and a water outlet is formed in the bottom of the other end of the inner cavity; an angle positioner matched with the test block fixer is arranged on the inner side wall of the washing box; the water storage barrel is arranged below the water outlet; a first liquid pump is arranged in the water storage barrel; the device further comprises a multi-medium conveying pipe. And the other end of the multi-medium conveying pipe is communicated with the first liquid pump. According to the invention, complex environments such as water flow and particle impact can be effectively simulated, and a technical support is provided for a scouring test of a tested sample. The angle and the scouring speed of the tested sample piece can be changed according to the requirements of conditions, and the multi-condition testing requirements are met.

The invention discloses an experimental device for multi-phase flow erosion corrosion coupling. The experimental device is used for carrying out an erosion corrosion coupling experiment on a test valve. The experimental device comprises a medium supply section and a recovery section, the input end of the test valve is connected and communicated with the medium supply section, and the output end of the test valve is connected and communicated with the recovery section; the medium supply section is used for conveying gas, liquid and solid three-phase experimental media, the test valve receives the three-phase mixed media from the medium supply section and performs an erosion corrosion coupling experiment under a simulated working condition, and the recovery section is used for separating and treating the three-phase mixed media after the experiment and then circularly conveying the three-phase media back to the medium supply section. According to the experimental device, gas-liquid-solid three-phase mixing is realized, and the three-phase proportion can be accurately controlled by changing the power of the centrifugal pump, the compressor and the spiral feeder, so that the experimental device is more suitable for actual working conditions such as oil and gas exploitation and coal gasification, and the erosion corrosion coupling effect of a test section is truly simulated.