23 results about "Wall thinning" patented technology

The utility model belongs to the technical field of mechanical disassembling and assembling tools, and particularly relates to a high-plasticity equal-displacement economizer anti-abrasion optimizing device which comprises a reinforcing structure, fixing structures are integrally formed on the left side and the right side of the reinforcing structure, and the reinforcing structure and the fixing structures are made of twelve-chromium-one-molybdenum-vanadium steel. The reinforcing structure comprises a first sleeve and a second sleeve; the fixing structure comprises two connecting retaining rings, and a plurality of comb tooth grooves distributed left and right at equal intervals are formed in the inner surfaces of the two connecting retaining rings. The reinforcing structure is arranged in the device and composed of the two sleeves, when the pipe wall of the economizer smoke exhaust pipe becomes thin due to impact of smoke particles, the reinforcing structure of the corresponding model can be selected to wrap the weak position of the pipe wall, and fixing is conducted through the fixing structures on the two sides of the reinforcing structure; the strength of the smoke exhaust pipeline of the economizer can be enhanced, and the abrasion resistance of the position of the smoke exhaust pipeline can be improved.

The invention provides a piping wall thinning prediction system, a piping soundness evaluation system, and a method which can evaluate a wall thinning amount, a wall thinning rate, and a remaining life at a high speed based on limited actual measurement results, and identify a location requiring monitoring in a piping in a plant. The wall thinning prediction system includes: a first AI evaluation unit configured to evaluate a fluid characteristic value of a piping based on an input value including piping shape information and information of a fluid in the piping; and a second AI evaluation unit configured to evaluate an index related to wall thinning of the piping based on an input value including the fluid characteristic value. The wall thinning prediction system is configured to predict the index related to the wall thinning of the piping.

To provide an inspection device and an inspection method that can two-dimensionally detect the range of wall thinning.SOLUTION: An inspection device 1 includes a probe group 100, an ultrasonic waveform recording unit 125 (recording unit), and a calculation unit 127. The probe group 100 has a plurality of vertical probes 101 that are attached perpendicular to the surface of an object to be inspected and transmit and receive ultrasonic waves. The ultrasonic waveform recording unit 125 records multiple received signals obtained by receiving ultrasonic waves transmitted from a first probe with a plurality of probes other than the first probe. The calculation unit 127 calculates multiple attenuation indices that represent the degree of attenuation of multiple second received signals received after the multiple first received signals relative to multiple first received signals recorded before wall thinning occurred in the object to be inspected among the multiple received signals. The calculation unit 127 then detects the range of wall thinning based on the multiple attenuation indices.SELECTED DRAWING: Figure 2

The invention relates to an automobile back door stand column plastic part thick wall thinning treatment injection molding mold which comprises a movable mold body, a fixed mold body, a gas-assisted molding mechanism and a deflation mechanism, the gas-assisted molding mechanism comprises a flash groove, the deflation mechanism comprises an ejector rod, a second driving part, a cutting assembly and a gas guide assembly, and a first sliding groove is formed in the bottom face of the flash groove; the ejector rod slides on the first sliding groove, the second driving part drives the ejector rod to move, the top end of the ejector rod is used for ejecting a part of the flash block which is not completely cooled before the mold is opened, the cutting assembly is arranged on the ejector rod and used for cutting the stretching part of the flash block generated under the action of the ejector rod, and the gas guide assembly guides gas in the flash block out of the mold from a notch. The ejector rod enables the flash block to deform under the local acting force, the cutting knife cuts the stretching part of the flash block after deformation, the flash block can be more easily cut, and after the stretching part is cut, the ejector rod can continue to abut against the deformation part, so that the notch is forced to be opened, and gas in the flash block can be exhausted through the notch.

The invention relates to the technical field of peristaltic pumps, in particular to a cooling treatment circulating device for coated optical lenses, which comprises a pump head shell, a fixed seat fixedly mounted on one side of the pump head shell and a hose arranged in the fixed seat, first pressing mechanisms are arranged at the two ends of the interior of the pressing cover correspondingly, second pressing mechanisms are arranged in the two moving seats, connecting columns are fixedly installed on the opposite sides of the two moving seats correspondingly, and a driving mechanism and two guiding mechanisms are arranged at the bottom of the fixed seat; a transmission mechanism is arranged in the end, close to the fixing base, of the pump head shell. The device has the beneficial effects that the rollers alternately extrude different positions of the hose, abrasion is prevented from being concentrated in a fixed section of the hose, local material fatigue of the hose is greatly reduced, the problems of wall thickness reduction and breakage caused by local excessive abrasion of the hose are reduced, and the hose replacement frequency and maintenance cost are reduced.

The utility model relates to the technical field of safety management and control of oil and gas pipelines, in particular to a temporary reinforcing device for a defective pipeline. The temporary reinforcing device for the pipeline with the defects comprises a reinforcing unit and a monitoring unit, the reinforcing unit comprises at least two protective plates, the protective plates are used for surrounding the periphery of a pipe wall thinning section of the pipeline to form a reinforcing sleeve, and the reinforcing sleeve is used for being sealed outside the pipe wall thinning section of the pipeline; the monitoring unit is arranged on the reinforcing sleeve, the monitoring unit comprises a pressure monitoring device and / or a gas detection device, and a power supply device is connected to the monitoring unit. According to the temporary reinforcing device for the defective pipeline, the thinning section of the pipe wall of the pipeline is temporarily reinforced, the reinforcing section is monitored in real time, when the temporary reinforcing positions of the pipeline are enough and the original pipeline in the reinforcing section is perforated, the perforated positions are replaced in a unified mode, the pipeline replacement frequency and the natural gas transmission stopping frequency are reduced, and the economic cost is saved.

The invention relates to the technical field of oil pipe detection, and discloses an array type old oil pipe wall defect morphology depth evaluation algorithm and system and a detection device.The algorithm comprises the steps that detection signals of all sampling points are obtained; extracting a first signal feature and a second signal feature of the detection signal of each sampling point, and obtaining a defect imaging result based on the first signal feature and the second signal feature; identifying a defect contour based on the obtained defect imaging result; based on the identified defect contour, establishing a defect depth quantitative compensation evaluation algorithm; and performing defect depth quantitative evaluation based on the established defect depth quantitative compensation evaluation algorithm. And the defect size is associated by utilizing signal characteristics, so that lossless, quantitative and visual evaluation on the appearance and the depth of the wall thickness reduction defect of the old oil pipe on site is realized.

This application belongs to the field of thermal insulation sleeve defect inspection technology, and aims to solve the problem that nuclear power plants do not have a systematic CRDM thermal insulation sleeve defect inspection method and cannot systematically eliminate the safety hazards of the unit. This application discloses a CRDM thermal insulation sleeve defect inspection method, which systematically analyzes the pile-type movement and possible fault forms of the CRDM thermal insulation sleeve. Without disassembling any components, it measures the actual height, thickness, and cracks of the CRDM thermal insulation sleeve, calculates the height settlement and wall wear, and determines whether the position has moved downward, whether there is wall thinning at the lower pipe mouth, and whether there are cracks at the flange reduction part, thereby completing the systematic defect inspection of the CRDM thermal insulation sleeve. This application can improve the safety of nuclear reactor unit operation, optimize the in-service inspection content of core overhaul, provide technical guidance for the in-service inspection content of nuclear power plants, and provide a technical route and reference plan for the development of subsequent inspection equipment.

The application discloses a kind of high-strength HDPE drainage pipe production methods, belong to HDPE water pipe production technical field, mainly including raw material preparation, raw material pretreatment, extrusion molding, cooling and shaping and stretching and cutting etc. Step, just extruded waste and traction pipe sealing adhesion, new material is affected by traction mechanism and enters into the shaping device from extruder, mainly through the way of vacuum suction and air pressure expansion to ensure that the size and shape of pipe material meet the design requirements, the traction speed of traction device is 1%-10% higher than the speed of extruder, to overcome the die swell of pipe material, secondly, the traction speed of traction device is adjustable slow speed affected by the stretching of pipe material in shaping device, effectively reduce the problem that pipe wall is thinned due to pipe material is pulled up too fast in shaping device, to improve the mechanical properties and longitudinal dimension stability of product.

The utility model relates to the field of metal die casting, in particular to an integrated feeding pipe for cold chamber die casting, which comprises a feeding pipe, a feeding port, a propelling port, an injection port and the like. The feeding pipe is a hollow pipeline with two open ends, one end of the feeding pipe is a propelling port, and the other end of the feeding pipe is an injection port; the device further comprises a circulating pipe cavity and a plugging head. A circulating pipe cavity is formed in the pipe wall of the feeding pipe, the circulating pipe cavity penetrates through the pipe wall to generate a plurality of through holes, and each through hole is blocked by a blocking head used for preventing cooling liquid from flowing out; wherein the through hole comprises a first opening, a second opening, a third opening and a fourth opening; and each first opening, each second opening, each third opening and each fourth opening are plugged by plugging heads. Through the arrangement of the liquid channel, the assembling channel, the connecting channel and the series connection channel, the problems that in the prior art, a first embodiment of a cooling cavity is arranged, the pipe wall of the material pipeline is thinned, and the physical property of the material pipeline becomes poor are solved.

The present invention discloses a method and system for obtaining the thickness of the oxide film on the inner wall of a Ni-Cr-M-based high-temperature alloy tube. The method first obtains the unit area weight gain of the alloy tube to be evaluated based on a pre-established growth kinetics model; then, based on the unit area weight gain, the oxide film thickness on the alloy tube to be evaluated is obtained. This method, combined with the growth kinetics of the oxide film and based on the classical Wagner theory, can rapidly determine the thickness of the oxide film grown on the surface of high-grade heat-resistant steel and high-temperature alloys at any temperature and time, without having to cut the tube for measurement or conduct post-test measurements in a high-temperature autoclave, thus reducing testing difficulty and saving costs. Furthermore, this method can also predict the thickness of the inner wall thinning of boiler tubes, providing a reference for calculating the remaining life of components and helping to ensure the safe operation of the unit.

The application discloses a control method for preventing hole meat loss of high-line screw thread steel finished products, and belongs to the technical field of metallurgy. The control method for preventing hole meat loss of high-line screw thread steel finished products provided by the application mainly comprises the following steps: the temperature of a control roller ring is controlled below 50 DEG C by using cooling water; the temperature of a rolled piece head entering a reducing mill train is ensured to be 820-850 DEG C by controlling water operation of the rolled piece; the pre-precision rolling and 8-rack incoming materials are controlled within the lower limit of a process requirement size; and a 76-degree milling cutter tip angle is used to process a thread roller ring. By the above method, the hole meat loss phenomenon of the high-line screw thread steel finished products can be greatly reduced.

The utility model discloses a hollow half shaft reducing die, which belongs to the field of manufacturing of automobile parts and comprises an upper die, a lower die, a lower die, a lower die, a lower die and an upper pressing head. The upper die is connected with external pressurizing equipment, and the upper pressing head is used for limiting and abutting against a workpiece to be machined; the lower die is located under the upper die, the lower die comprises a hole shrinkage die body, and the upper die and the lower die are matched to press a workpiece to be machined into the hole shrinkage die body for hole shrinkage; the lower die further comprises a righting assembly, the righting assembly is located over the reducing die body, and the righting assembly is used for enabling a workpiece to be machined to enter the reducing die body at a fixed angle. The centering assembly is arranged to apply inward radial holding force to the to-be-machined part, so that the to-be-machined part is always kept at the correct axial position in the moving process in the lower die, the conditions that the end of the cold-rolled steel pipe is broken, the pipe wall is thinned and the like after diameter shrinkage are avoided, and the diameter shrinkage forming quality can be guaranteed.

The application discloses a lightweight wok comprising a bottom wall and a side wall raised around the bottom wall, the side wall having: (i) an overall shape symmetrical about a longitudinal axis, (ii) and a diameter perpendicular to the longitudinal axis; the maximum diameter of the side wall is D1, pan openings which are symmetrically arranged relative to the longitudinal axis are defined at the top of the side wall, the vertical distance between the pan openings and the bottom wall along the longitudinal axis is the depth H1 of the frying pan, and D1: H1 is equal to 2.0-5.0; moreover, the side wall is formed by spinning a material around the bottom wall after the range of the bottom wall is determined on a plate, and at least part of the side wall is configured to be a stress reduction area in which the internal stress formed in the side wall in the spinning process is reduced through turning and cutting machining. The minimum thickness of the stress decreasing area is 20%-60% of the thickness of the bottom wall; compared with the prior art, the side wall is thinned to facilitate release of internal stress, heat is generated in the turning process, and therefore the internal stress of the side wall is reduced.

A feeding mechanism comprises a suction hopper body, a feeding pipe is fixedly connected to one side of the outer wall of the suction hopper body, a mounting opening is formed in the side, away from the feeding pipe, of the suction hopper body, and the mounting opening and the feeding pipe are located on the same horizontal straight line. An inserting rod is slidably connected to the position, located above the mounting opening, of the inner wall of the suction hopper, a spring is fixedly connected to the lower end of one side of the inserting rod, the bottom of the spring is fixedly connected with the suction hopper, the lower end of the inserting rod extends into the mounting opening, and a mounting frame is movably mounted on the inner side of the mounting opening; a window is fixedly mounted on the inner side of the mounting frame, the middle of the top of the mounting frame abuts against the insertion rod, the window made of tempered glass is fixed in the mounting opening through the mounting frame, and the window can be detached from the mounting opening by pushing the insertion rod upwards and pulling a handle on the outer side of the mounting frame, so that replacement is convenient. The problem that the hopper wall is thinned due to impact of powder is solved.

The utility model discloses a pipe wall thinning mechanism which comprises a core rod and a collecting pipe, the collecting pipe is arranged on the outer side wall of a target processing pipe in a sleeved mode and moves in a reciprocating mode, and the core rod moves in a reciprocating mode in a pipeline of the target processing pipe. The core rod comprises a first protrusion protruding out of the outer side wall of the core rod, and a second protrusion extending in the direction close to the core rod is arranged on the inner side wall of the collecting pipe. At the first position, the first bulge extends into the pipeline by a target distance, the second bulge is opposite to the lower part of the first bulge, the first bulge and the second bulge are spaced by a first gap distance, and the first gap distance is smaller than the initial wall thickness of a target to-be-treated pipe; and when the pipe wall processing mechanism moves from the first position to the second position, the pipe wall processing mechanism extends by the target distance according to the size of the first gap distance, so that the initial wall thickness of the target to-be-processed pipe in the target distance range is extruded to the first gap distance, and the pipe wall can be thinned to be smaller than the initial wall thickness; and individual requirements of customers are met.

Provided is a method for molding a curled section capable of sufficiently maintaining rigidity and strength even when the curled section is reduced in size such as a thin wall or a reduced opening diameter. The diameter-reducing process is performed such that the angle between the inclined wall section (5) and the central axis (L0) of the threaded cylindrical section is within the range of 20-30 degrees (inclusive). Processing in which the tip edge section (10) side of the curved portion is rolled inward in the radial direction and brought into contact with the outer surface of the inclined wall section (5) is performed in such a manner that the tip edge section (10) falls into the curled section (1) with a dimension measured in the radial direction between the outermost diameter section (9) of the curled section (1) and the location at which the tip edge section (10) is brought into contact with the inclined wall section (5) In the range of 40% to 60% of the curl width (W), which is half of the difference between the outer diameter and the inner diameter, the contact angle ([theta] 10) of the tip edge section (10) with respect to the inclined wall section (5) falls within the range of + / -20 degrees centered on 90 degrees.

The utility model relates to the technical field of inductors, in particular to an inductor capable of resisting high-frequency vibration. The inductor resistant to high-frequency vibration comprises a framework, the framework comprises a framework body and a framework cover, a containing groove is formed in the framework body, and a magnetic core is arranged in the containing groove; the outer wall of a notch of the accommodating groove is thinned to form a first mounting edge; a second mounting edge is formed on the edge of the framework cover; the framework cover covers the framework main body; the first installation edge abuts against the second installation edge, and the first installation edge abuts against the inner top wall of the framework cover. When the framework body and the framework cover are closed in a covering mode, the first installation edge abuts against the second installation edge, the first installation edge abuts against the inner wall of the framework cover, a gap between the framework body and the framework cover can be adjusted to the position of the inner top wall of the framework cover through the design, a magnetic core in the framework cannot rub or collide with the gap, and therefore the magnetic core is protected. In addition, according to the design, the creepage distance between the magnetic core and the outside is increased, and the safety of the inductor is improved.

To provide a method of manufacturing a complete body and a method of manufacturing a semi-complete body compatible with a demand for weight reduction and wall thinning of a bottle using a thermoplastic resin including polyester-based and polyolefin-based resin, and a demand for diverse shapes.SOLUTION: A method of manufacturing a complete body includes a step of further stretch blow molding a semi-complete body obtained by stretch blow molding a thermoplastic resin preform in a semi-complete blow mold to obtain a complete body. When a product of a longitudinal stretch ratio and a transverse stretch ratio during stretch blow molding is defined as an area magnification, an area magnification of the complete body to the semi-complete body is 30% to 60% of the area magnification of the complete body to the preform.SELECTED DRAWING: Figure 1

The utility model discloses a dry quenching boiler pipeline isolation device, including first sheath, connecting plate, second sheath and third sheath, the first sheath right side low position is equipped with second sheath, the first sheath left side low position is equipped with third sheath, the first sheath, second sheath and third sheath structure are same, and first sheath, second sheath and third sheath top all weld and have connecting shell, the both ends of connecting shell all are open structure, and the both sides bottom of first sheath, second sheath and third sheath all weld and have connecting sleeve. The utility model through being equipped with a plurality of sheaths, and the bolt installation and dismounting between sheath and connecting plate can be selectively installed and used according to the demand, can isolate the pipeline, avoids a large number of circulating air volume and washes the pipe wall to make the shaking, the clearance smaller elbow place rubs each other, makes the pipe wall thin and the pressure strength reduction to the security of pipeline installation is increased.

The utility model discloses a metal exhaust pipe short pipe corrugation forming device which comprises a first pushing assembly and a forming assembly, and the first pushing assembly is used for pushing a short pipe into the forming assembly and continuously driving the short pipe to move. The forming assembly comprises a first fastening component, a second fastening component and an expansion claw located between the first fastening component and the second fastening component, the first fastening component and the second fastening component are arranged in a spaced mode, a conical surface is arranged on the periphery of the expansion claw, a second pull rod is arranged in the expansion claw in a penetrating mode and used for enabling the expansion claw to expand outwards, the expansion claw can be reset, and the end of the second pull rod extends to the outside to be connected with a ninth driver. The first fastening part and the second fastening part are connected with a tenth driver and an eleventh driver respectively, the tenth driver and the eleventh driver push the first fastening part and the second fastening part to be away from each other or close to each other respectively, corrugations are formed in an extrusion mode, and the formed short pipe corrugations have better ductility. Compared with an extrusion forming mode, the forming mode of transverse compression can reduce friction to a short pipe, the pipe wall is prevented from being thinned, and meanwhile the pipe wall is prevented from being torn in the rolling forming process.

A mold assembly comprising: a housing; a die for stretching and / or thinning the wall of the metal cup mounted on the end of the punch to form a container body; and a support mechanism for the mold or a mold holder in which the mold is mounted. The support mechanism is configured to allow the die or die holder to tilt relative to the housing to reduce misalignment of the longitudinal axis of the die relative to the punch during stretching and / or wall thinning of the metal cup. The mold assembly further includes a chamber disposed in the housing and adapted to seal a fluid therein. The chamber is sealed by one or more surfaces coupled to or disposed on the mold or mold holder such that tilting of the mold during stretching and / or wall thinning of the metal cup resists fluid sealed in the chamber from moving the one or more surfaces.

The present disclosure relates to at least one method for ascertaining at least one attribute of pressure vessel wall. A method comprises: while a pressure vessel, which comprises a wall having an outer surface and an inner surface, is operating: ascertaining a current wavelength shift of a first fiber Bragg grating (FBG) sensor disposed at a first outer surface location on the pressure vessel; and ascertaining a current thickness of the wall at the first outer surface location by: computing a vector based on a time series of the current wavelength shift, or a derivative of the time series, or a derivative of the current wavelength shift; providing the vector to a predetermined regression model; and using the regression model, ascertaining the current thickness of the wall.