1794 results about "Water immersion" patented technology

The present invention is a light-producing technology exemplified by lighting that is safe, reliable, energy efficient, long lasting, and capable of operating under a wide range of weather and other conditions. The device incorporates a durable housing, a light element, a liquid solution, and a power supply. Subject only to its power source, it is capable of indefinitely producing intensely visible light at 100 yards or more during both daytime and nighttime. It can be configured for higher or lower intensities in a wide variety of foreseen applications. The device is not flammable, explosive, or toxic, and without loss of function withstands shock, extended water immersion, and heating and cooling to temperatures below freezing and approaching boiling.

A golf ball is provided which changes color or other indicia after significant immersion in water to indicate that the ball has been recovered from a water hazard and may not have predictable flight characteristics which may result in loss of carry and roll. In one embodiment, a microencapsulated dye layer is formed immediately below the final gloss coat, with controlled dye release causing a stained look to the ball after significant immersion in water. In another embodiment, the dye or ink is provided in pelletized form for ease of manufacture. In other embodiments, a dye, ink, or chemical is compounded with other materials and introduced into or applied onto the golf ball's composite materials in a solid, liquid, or gaseous form. In still other embodiments imprints on the ball are made with a water activated ink which either appears or disappears upon the immersion of the golf ball in water.

The invention discloses a process for producing vanadic anhydride by vanadium slag. The steps of the process comprise as follows: a, adding alkali metal salt in the vanadium slag, and mixing with each other uniformly, a mixture is obtained. b, laying the mixture obtained by step a into a calcining furnace to oxidize and calcine, vanadium slag grog is obtained. c, the calcined vanadium slag is discharged out of the furnace, fast cooling and performing water immersion. d, filtering the mixture obtained by step c, filter liquor is obtained. e, removing impurities in the filter liquor. f, adjusting the pH value of the filter liquor obtained by step e, adding ammonium salt to precipitate vanadium and filtering the filter liquor, then, ammonium peroxovanadate filter cake and ammonium metavanadate filter cake are obtained. g, calcining the filter cake after vanadium precipitation obtained by step f, and vanadic anhydride is obtained, wherein the content of the vanadic anhydride in the vanadium slag used in step a is 2.0%-8.0%. The invention has the advantages of simple and easy, low facility request, convenient operation and low cost, further, the residual quantity of the vanadic anhydride in waste slag is 0.55%-1.0%, which has fine economic benefit and social benefit.

Preparation method and application of polycaprolactone / natural polymer composite porous scaffold, method: including preparation of polycaprolactone electrospun nanofiber membrane; (1) placing polycaprolactone electrospun nanofiber membrane in alkaline solution reaction, soaking and rinsing in deionized water; (2) putting the fiber membrane obtained in (1) into DMTMM or natural polymer solution of DTMMM to react, immersing and rinsing in deionized water, and then immersing in natural polymer for room temperature reaction, to remove Ionized water soaking and rinsing; (3) Evenly coating and casting the mixed solution of natural polymer materials on the fiber membrane obtained in (2), freeze-drying, and extracting the solvent; (4) Applying the double-layer scaffold obtained in (3) After soaking in the cross-linking room temperature reaction, soaking in deionized water, rinsing, and freeze-drying. The porous scaffold prepared by the invention is stable, has suitable pore diameter, good biocompatibility and fast degradation rate, and can be used for skin and clinical tissue and organ defect repair, reconstruction or wound dressing.

The invention provides an electric pressure cooker, comprising a cooker body (100) and a cooker cover (200); a cap (300) raised towards the outer part of the cooker body along a radial direction is arranged on the cooker body; a back cover plate (400) suitable for forming a holding cavity with the cap is further arranged on the cooker body; a push rod component is held in the holding cavity, and a penetrating hole (301) allowing the top part of the push rod component to extend out of the outer part of the cap is arranged on the cap; the holding cavity further holds a switch (2) driven by the push rod component, and a horizontal projection of the penetrating hole (301) is spaced from the horizontal projection of the switch (2). The electric pressure cooker provided by the invention can guarantee that the switch position and the penetrating hole position are free from overlapping part on vertical direction; when waterlog is formed on the top face of the cap, even though water which is not timely discharged is flowed from the penetrating hole to the holding cavity, water cannot directly fall on the switch; therefore, the electric pressure cooker can effectively prevent switch or microswitch particularly from water immersion; the switch or microswitch is stable in use.

Methods and apparatus determine if an intruder passes into a security zone that is associated with a waterfront asset. An embodiment of the invention provides a harbor fence system that is designed to be deployed in water around ships or other waterfront assets to serve as a line-of-demarcation in order to provide protection. The harbor fence system comprises a series of spars that protrude above the water surface and that communicate with a computer with a telemetry subsystem. Each spar contains electronic sensors, e.g. water immersion sensors and accelerometers, and circuitry to detect an intrusion and to communicate the location of the intrusion to a computer control station. Spars may communicate wirelessly and may also be solar powered. Additionally, the embodiment may also determine whether an underwater intruder is passing under a protective boundary, in which the harbor fence system interfaces to an underwater sonar sensor subsystem.

The invention discloses a method for recovering carbon from waste cathode carbon blocks of electrolytic aluminum. The method mainly comprises the following steps of: crushing, grinding, leaching in water, floating, and the like. The method has the advantages that the carbon content of recovered powdered carbon reaches higher than 70 percent, and the carbon recovery rate reaches higher than 98 percent, thus the recovered powdered carbon can be used for preparing carbon materials for aluminum electrolysis, aluminum oxide desulfurizing agents, and the like; and the method has simple process, low production cost, no secondary pollution, stable and reliable product quality and high yield, can realize continuous scale production and is beneficial to environmental protection.

The invention discloses an undisturbed soil sample expansion force testing device capable of controlling the saturation. The device comprises a base supporting system, wherein a lower disc is fixed on the base supporting system, a cutting ring base and a cutting ring are arranged on the lower disc, and the upper part of the cutting ring base is provided with an upper cover; a central circular groove and an annular groove are formed on the lower disc, a soil pressure sensor is arranged in the central circular groove, an annular water penetration plate is arranged in the annular groove, water-immersion circular grooves are formed on the annular water penetration plate, water-permeable stones are uniformly placed in the water-immersion circular grooves, and the bottom of the annular groove is connected with an external water injection system through a pipeline; a soil sample is placed between the lower disc and the cutting ring, and a water-permeable plate base which is provided with a water-permeable plate and water-permeable holes is arranged on the top of the soil sample; and a plunger, overflow equipment and vacuum extraction equipment are arranged on the upper cover. The device effectively solves the problems that testing devices for an expansion back pressure method, a pressurization expansion method and a balance pressurization method have relatively large disturbance on soil sample structures, cannot effectively control strict saturation states and are relatively long in testing time consumption.

The invention discloses an intumescent flame retardant coating gum and the application thereof on fabric finishing. When the traditional intumescent flame retardant is applied to fabric, the fabric is not resistant to water rinse, water immersion or transfer, the flame retardant can lose or degrade under the action of luminous rays, heat, moisture and mechanical external force, and the flame retardant properties are reduced. The intumescent flame retardant coating gum comprises a flame retardant coating base gum and a carbon source, and is characterized in that the flame retardant coating base gum is prepared by mixing ammonium polyphosphate, melamine and 4A zeolite, adding organic alcohol, coating the mixture by more than two silane coupling agents for modification, drying the mixture after removing the organic alcohol to obtain a composite flame retardant, adding water, a non-ionic surface active agent, a binding agent and a cross-linking agent to the composite flame retardant, and grinding and dispersing the mixture; the carbon source is aqueous polyacrylic ester containing hydroxyl groups or aqueous polyurethane containing hydroxyl groups or a modifier of the former two. The invention obviously improves the performance of the flame retardant coating gum on flame retardant fabric for resistance to water rinse, transfer, light, heat and friction.

This invention provides a refrigeration system which includes in a closed loop connection a compressor for compressing a refrigerant into a condenser for condensing the compressed refrigerant into a liquid refrigerant, a control valve to controlling the discharge of the liquid refrigerant from the condenser into a reservoir, a sensor for measuring the temperature of the liquid refrigerant near the control valve, a fan for circulating air thorough the condenser, a sensor for measuring the ambient temperature of the air flow through the condenser, and an electronic control system to control various functions of the refrigeration system, including the flow of the liquid refrigerant through the condenser as function of the temperature difference between the ambient temperature and the temperature of the liquid refrigerant. During operation, a minimal flooding of the condenser is always maintained; i.e., a certain amount of liquid refrigerant is always trapped to thereby subcool the liquid refrigerant before discharging it into the reservoir at all ambient temperatures. The liquid refrigerant flow is decreased when the temperature difference is greater than a predetermined value and is increased when the temperature difference is less than the predetermined value. Further improvements in efficiencies are obtained by controlling air flow through the condenser and compressing refrigerant vapors from the reservoir into the condenser.

The invention relates to a dual-component sulfhydryl-terminated polyurethane mildew-proof sealant and a preparation method thereof, wherein, the sealant consists of component A and component B, wherein, according to the parts by weight, the component A comprises 80-120 parts of sulfhydryl-terminated polyurethane liquid rubber, 20-200 parts of filling material, 10-100 parts of plasticizer, 0.5-10 parts of tackifier, 0.1-5 parts of mould inhibitor, 0-5 parts of vulcanization regulator, and 0-5 parts of antioxidant; the component B comprises 80-120 parts of vulcanizing agent, 20-150 parts of plasticizer, 20-200 parts of filling material, and 0-5 parts of vulcanization regulator; and the proportion of component A and component B is 10:0.5-2. The mildew-proof sealant has the tensile strength of 5.0MPa, breaking elongation rate of 1020 percent, the bonding strength with the concrete of 2.5MPa, and the mildew-proof level of being less than or equal to 1; the sealant can be used for the fields such as electrons, mechanicals, and the like, can meet the sealing and mildew-proof requirement under the conditions of long-term water immersion, damp-heat or other conditions where mildews are easy to breed, has no exhaust of three wastes and is friendly to environment.

The invention provides a method for carrying out ultrasonic inspection on residual stress of an aluminium alloy pre-stretching board by water immersion, belonging to the field of non-destructive inspection. The method comprises the following steps of preparing a reference block; carrying out measurement and calibration; measuring the residual stress. In the method, the water immersion method is adopted, and the temperatures in stress calibration and stress measurement processes can be ensured to be consistent by controlling the water temperature not to be changed, thus eliminating the effects of temperature difference on the ultrasonic wave speed and eliminating temperature errors; besides, an automatic scanning frame is adopted instead of manual scanning, so that the distance between a probe and the surface of a material to be measured in the measurement process can be ensured not to be changed, thus eliminating the effects of coupling condition difference on sound propagation time and eliminating the coupling errors. The method is beneficial to non-destructive evaluation of the near surface residual stress of the aluminium alloy pre-stretching board.

The invention provides a method for unhairing leather and loosening leather fiber without sodium sulfide and lime in a leather production process and the application of the method. The method is characterized in that a method for combining unhairing by non-sulfur (sodium sulfide) depilatory under the alkaline condition and enzyme fiber loosening under the under the non-lime (lime) alkaline swelling condition are adopted, the enzyme unhearing and the enzyme fiber loosening take protease, lipase, amylase and glucoamylase as a compound enzyme system. The method achieves the effects for unhairing and loosening the leather fiber through adopting the method for combining compound enzyme water immersion, compound enzyme unhairing, unhairing with sodium sulfide depilatory, expansion regulator-sodium hydroxide expansion and the enzyme unhairing under the alkaline condition and eliminates the pollution which is brought by the sodium sulfide and the lime in animal unhairing or leather fiber loosening procedures in the leather production process. The method of the invention is suitable for unhairing and leather fiber dispersed processing of various animal leather of leather with various usages.

The invention relates to a water immersion resistant quick lifesaving device for a vehicle. The device comprises a vehicle body, air bags, an air bag fixing device, water level sensors, a control unit, a warning water line, a high pressure air storage tank and a pressure valve, wherein the air bags are respectively mounted on the periphery of the bottom of the vehicle body, and fixed at the bottom of the vehicle body through the air bag fixing device; gas generators are arranged in the air bags, and connected with the control unit; the control unit is connected with the water level sensors. The quick lifesaving device has the advantages of simple structure, low cost, high safety, convenience in operation and the like, further has sound portability, can facilitate various vehicle configurations, and has no change requirement on inner components of the vehicle; when the vehicle meets with heavy rainfall weather or falls into water, the safe bags can be expanded and inflated in a short time through the control unit, the safe air bags expand to load a vehicle chassis so as to enable the vehicle to float on the water surface, the personnel on the vehicle can conveniently put on life-jackets to escape for realizing self rescue in dangerous moment, and safety protection is provided for the personnel in the vehicle.

The invention relates to a portable full automatic resistance spot welding ultrasonic detecting instrument and a detecting method. The portable full automatic resistance spot welding ultrasonic detecting instrument comprises an industrial computer, an ultrasonic probe, an ultrasonic detecting module integrated in an IPC (Industrial Personal Computer), a compact-type two-dimension mechanical scanning motion module, and an ultrasonic analyzing module, wherein the ultrasonic detecting module comprises an ultrasonic pulse radiating circuit, an ultrasonic receiving circuit and an A / D conversion circuit; the compact-type two-dimension mechanical scanning motion module comprises a micro-scale linear motor, a driver, a motion control card, and a self-adaption profile-followed device; the ultrasonic analyzing module comprises a data and image processing module, a database storage module, and a manual playback and analysis module. Functions such as self-adaption scanning and detecting to the resistance spot welding joint surface, automatic generation of a C scanning image, and quantitive calculation of nugget diameter of the ultrasonic probe in the situation of non-water immersion are realized; compared with the prior art, the portable full automatic resistance spot welding ultrasonic detecting instrument and the detecting method have the advantages of simplicity in operation, portability, reliability, strong anti-jamming capability, high detection and analyzing speed and the like.

The invention relates to a performance test device for a water immersion focusing probe and a test method thereof. A steel ball is placed on a reference reflection seat of the performance test device placed in a water tank, the corresponding upside of the steel ball is provided and aligned with a probe to be tested, the probe to be tested generates ultrasonic signals to the steel ball through an ultrasonic gauge, and the performance difference of the probe is tested through the variation of reflection signals. A three-dimensional guide adjusting device is adjusted to test the position and variable quantity of the probe in real time so that reflection echo signals of the probe on the steel ball reaches maximum. Effective reflected wave is received by the probe and displayed on a display screen of the ultrasonic gauge in a form of wave height; scale numerical values on X axis, Y axis and Z axis of a graduated scale are recorded respectively; and various performance indexes of the probe are determined by observing the variation of the wave height. The performance test device for the water immersion focusing probe and the test method thereof are simple and practical, and can test the indexes such as focus, sound width, focus diameter, sound offset angle, sensitivity surplus, sensitivity deflection of a multi-chip probe and the like without depending on special laboratory equipment.

The invention provides a mineral-based soil remediation agent, and a preparation method and application thereof. The mineral-based soil remediation agent is prepared by mixing calcium raw materials, sodium raw materials and silicate minerals, and then performing calcination and crushing; or further performing water immersion treatment on the mineral-based soil remediation agent, then performing solid-liquid separation, and then drying the obtained solid. The effective silicon content (solubility in citric acid) in terms of SiO2 is more than or equal to 20 wt%, and the effective calcium contentin terms of CaO is more than or equal to 40 wt%, and the content of harmful elements such as Hg, As, Cd, Pb and Cr is lower than 50 ppm.

The object of the invention is to provide a water immersion detecting circuit, which is free from false detection and is stable and highly sensitive in operation. There is provide a water immersion detecting circuit provided on a printed board 11 of an electronic unit and used for detecting water immersion of the electronic unit based on a change of resistance generated between a pair of sensor electrodes for detecting water immersion P10, p11, wherein the pair of sensor electrodes P10, P11 are positioned opposite to each other on the printed board 11, and a U-shaped slit (opening) 12 is formed between the sensor electrodes P10, P11.

The invention belongs to the field of nondestructive detection, and relates to a water immersion ultrasonic phased-array detection device and a detection method of a disc part of an aero-engine. The water immersion ultrasonic phased-array detection device comprises a flaw detection water tank (1), a rotary table (2), a control cabinet (3), a three-dimensional moving device (4), an ultrasonic flaw detector, a control computer (6), a probe clamp (7) and an ultrasonic probe. The device is characterized in that the ultrasonic flaw detector is an ultrasonic phased-array flaw detector (5), and the ultrasonic probe is an annular-array ultrasonic phased-array probe (8). The detection method comprises detection steps as follows: system connection is conducted; and ultrasonic echo signals are acquired and recorded. According to the device and the method, the probe is prevented from being changed repeatedly, and the detection efficiency is improved.

An antenna device having a substantially cylindrical shaped case to house the antenna part and a stopper to seal a case opening tightly, wherein the stopper has the first waterproof on the outer periphery to contact the case and the second waterproof on the inner periphery to contact the lead wires. The first waterproof and the second waterproof are disposed on a same location. The present invention can provide the antenna device capable of preventing water immersion into the case simply and reliably without using any filler.

The invention discloses a method for preparing magnesium aluminate spinel by using secondary aluminum ash. The method comprises the following steps: (1) preparing the secondary aluminum ash as a raw material; (2) calcining for 1-3 h in 900-1200 DEG C, after cooling, ball-milling and preparing secondary aluminum ash fine powder; (3) adding the secondary aluminum ash fine powder to water, under theconditions of a temperature of 50-98 DEG C and stirring, and performing water leaching by applying an ultrasonic wave; feeding an ammonia gas generated by the water leaching to a reaction tank and generating ammonium chloride with hydrochloric acid; (4) filtering and separating a leaching residue, after washing and drying, mixing with a material containing magnesium oxide, and levigating; (5) pressing as pellets; and (6) sintering the pellets in a high temperature or smelting in an electric arc furnace so as to prepare the magnesium aluminate spinel. The method is rapid in reaction speed, andcapable of enabling nitrogen to be converted to the ammonia gas which is discharged and recycled, enabling soluble impurities to enter a liquid phase, and realizing the further impurity removal. The prepared magnesium aluminate spinel is high in purity, and less in impurity content.

The invention relates to a comprehensive recovery method of iron, vanadium and titanium for vanadium and titanium magnetite concentrated ores, in particular to the comprehensive recovery and utilization of the vanadium and titanium magnetite concentrated ore of which the vanadium content is higher. In particular, the invention is vanadium extraction through water immersion after the vanadium and titanium magnetite concentrated ore is performed with sodium activation and sintered, the vanadium product is made from leach solution, the remaining slag is performed with reduction quickly through a rotary furnace after carbon is added, the reduction product is melted through the electric furnace, to segregate the melted iron and the titanium slag, the melted iron is used to make steel, and the titanium slag is used to produce white titanium pigment through a sulfuric acid method titanium white technology. The method of the invention is applied to the refining technology of the vanadium and titanium magnetite concentrated ore, to ensure that the recovery rate of the vanadium and titanium is greatly enhanced, the recovery rate of the total vanadium in the iron concentrated ore can reach more than 80 percent, titanium is fully recovered, and the production of massive blast furnace slag is avoided.

This invention relates to a method of using walnut shell as matrix for mushroom cultivation. Walnut shells contain vegetable tannin that inhibit reproduction of true fungus, so ignore possibility of it as mushroom medium. This method includes medium heat sterilization, vaccination. Medium preparation methods are : (1) smash the walnut shell, in size of diameter below 1 mm to 10mm, at room temperature water immersion walnut shells 24-72 hours to reduce tannin content, walnut shells and water quality ratio (1 : 2) - (1:8); (2) take walnut shell, wood and wheat bran as compost, quality ration of: the walnut shell 50% -70%, 10% -38% sawdust, wheat bran 18% -10%, by adding glucose 0.5% -1% and Gypsum 1%. This invention use abandoned walnut shells as materials, not rely on higher-value raw materials, will brought facilitating role for walnut producing farmers, walnut processing enterprises and mushroom cultivation.

The invention relates to inorganic substance super-hydrophobic paint and application thereof. The paint is prepared in the following method: silica sol is injected into a reactor with a nano microsphere template under a negative pressure condition, the template is immersed in the silica sol for 2h, then the reactor is sealed and stored in a thermostat, the silica sol and the template react at the temperature of 60 DEG C for 12h, the template is removed by virtue of heating or water immersion, a solid blocked micro-nano composite polygon is obtained, and after the blocked micro-nano composite polygon is dried, the blocked micro-nano composite polygon is ground into powder; the powder is poured into another reactor, dispersion liquid acetone is mixed with the powder, a low-surface-energy silane coupling agent is used for modifying the powder at a temperature of 25 to 50 DEG C, the powder reacts for 10h to 15h, the micro-nano composite polygon powder accounts for 0.5 to 20 percent of the mass of the paint, and the super-hydrophobic paint is prepared. The inorganic substance super-hydrophobic paint can be smeared on the surfaces of various conventional materials, the preparation method of the paint is simple, and the obtained super-hydrophobic surface is excellent in stability.

The invention relates to a method for digesting grease through microwave pretreatment and an aqueous enzymatic method. The method includes soaking raw materials, performing microwave puffing treatment on camellia oleifera seed slurry, digesting grease with water, performing physical refining on the obtained grease after degumming through a phosphatidase enzymatic method, or directly performing rough filtration, refined filtration and nanofiltration, and then performing vacuum dehydration and drying to obtain grease products and a by-product of wet meal. According to the method, the microwave puffing treatment is adopted on raw materials such as camellia oleifera seeds, cell structures of the raw materials can be fully destroyed, and the oil yield of the following water immersion method can be improved; grease digestion through water after microwave pretreatment for materials belongs to an environment-friendly and safe production process; and the method has the advantages of being simple and environment-friendly in process, high in oil yield, low in investment and prone to industrial production.

The invention discloses a sandy soil water-immersion testing method for loess collapsible deformation. The method includes the steps: digging an exploratory well on the stratum surface, and taking collapsible loess below the exploratory well as to-be-tested soil mass; selecting a bearing plate, fixing a sedimentation rod above the bearing plate, and mounting a soil pressure gauge on the bearing plate; removing dig fictitious soil at the bottom of the exploratory well, laying a sand bed, placing the bearing plate on the sand bed, and enabling the measuring signal line of the soil pressure gauge to extend out of the stratum surface upwards; and filling sand gravels in the exploratory well, filling water after sufficient sand gravels are filled, and measuring the earth pillar pressure formed by the sand gravels by the soil pressure gauge, wherein sedimentation displacement change of the sedimentation rod refers to collapsible deformation of the collapsible loess. By the sandy soil water-immersion testing method for loess collapsible deformation, the defects of disturbance of soil sample obtaining and sample preparation on loess structuredness in indoor collapsibility tests, high on-site water-immersion test pit testing cost and limited testing points are overcome.

The invention relates to a water immersion ultrasonic flaw detection system and method. The system comprises an ultrasonic probe, an ultrasonic processing module, a motion control module, a motion execution mechanism, an industrial control computer and a water tank, wherein the ultrasonic probe is used for transmitting an ultrasonic emission signal to a to-be-detected workpiece and receiving an ultrasonic echo signal; the ultrasonic processing module is used for generating the ultrasonic emission signal under the control of the industrial control computer, processing the echo signal and outputting the detection echo signal to the industrial control computer; the motion control module is used for receiving a motion command of the industrial control computer and controlling the motion execution mechanism to complete automatic ultrasonic scanning of a motion track. The method comprises the following steps: ultrasonic detection setting parameters and the motion command are set in the industrial control computer, and output to the motion control module and the motion execution mechanism so as to realize automatic ultrasonic scanning of the motion track. The special ultrasonic processingmodule is manufactured to increase the ultrasonic signal processing speed, and a foundation for accuracy of ultrasonic flaw detection results is laid. The system and the method are successfully applied to nondestructive detection of aviation composite cake disc parts, and good application effect is achieved.

The invention relates to a modularized multi-axis ultrasonic water immersion detecting system, which comprises a base. The left end and the right end of the base are provided with a left vertical bracket and a right vertical bracket respectively; the left vertical bracket and the right vertical bracket are provided with a left horizontal bracket and a right horizontal bracket extended in the front and rear directions; a cross beam capable of moving in the front and rear horizontal directions is arranged between the left horizontal bracket and the right horizontal bracket; the left end and the right end of the cross beam are movably connected with the left horizontal bracket and the right horizontal bracket respectively; the cross beam is provided with an upright post capable of horizontally moving in the left and right directions; the upright post is provided with an upright rod capable of moving in the upper and lower directions; and the lower end of the upright post is provided with an ultrasonic detection probe. The system can be used for copying and ultrasonic flaw detection for workpieces with different shapes or irregular shapes, also can assess the purity degree of the workpieces and assess the detection probe, and is mainly applied in the ultrasonic detection field of the workpieces.

The invention relates to an ultrasonic automatic detection system of tubing with a variable wall thickness and step, and belongs to the detection technical field. The detection system comprises a track, a computer measurement and control system, a carrier roller and a carrier roller transmission device, wherein traveling wheels are arranged between the track and an automatic detection trolley, a fault detection water tank is arranged under the track, the carrier roller is arranged at the bottom of the detection water tank and connected with a reducer output shaft of the carrier roller transmission device, and the automatic detection trolley crosses on the track. According to the detection system, a water immersion ultrasonic method and a vortex method are adopted to automatically detect the tubing with the variable wall thickness and step, 100% detection is achieved through tubing rotation and linear movement of a probe along with a drive device, sound incident angles needed by detection is reached through drive and adjustment of the probe, and the computer technology is used for controlling a mechanical system, detection processes and data processing and output.