11 results about "Cylindrical geometry" patented technology

Lining device for lining a branch line (3) branching off from a main channel (2) with a lining hose (4), comprising at least a) a receiving chamber (5) for receiving the lining hose (4), wherein the receiving chamber (5) has a cylindrical geometry with an axis of rotation (6) and a cylindrical receiving chamber outer circumferential surface (7), and the cylindrical receiving chamber outer circumferential surface (7) has a straight receiving chamber support line (8) that is parallel to the axis of rotation (6), b) at least a first reducing element (9) that is attached to a first axial end face of the receiving chamber (5), and has a truncated cone geometry with a reducing element outer circumferential surface (11) in the form of an oblique truncated cone, wherein a contour line of this oblique truncated cone lies on the reducing element outer circumferential surface (11) and forms a straight first reducing element support line (13),which is aligned with the receiving chamber support line (8), c) a deflecting piece (15) which is attached to an axial side of the first reducing piece (9) facing away from the receiving chamber (5), and which is provided at an end facing away from the first reducing piece (9) with a blow-out nozzle (16) for attaching one end of the lining hose (4), wherein the connection between the first reducing piece (9) and the deflecting piece (15) is designed such that the position of the blow-out nozzle (16) is adjustable and adaptable to the position of an inlet of the channel branch line (3) into the main channel (2), d) a pressurizing means (32) for pressurizing the pressure-tight design and the receiving chamber (5),a unit formed by at least the first reducing piece (9) and the deflecting piece (15) with a blow-out pressure for blowing out a lining hose (4) located in the receiving chamber (5) and attached to the blow-out nozzle (16) from the blow-out nozzle (16), ande) a second reducing piece (10) which is attached to a second axial end face of the receiving chamber (5) facing away from the first reducing piece (9), and which also has a truncated cone geometry with a reducing piece outer circumferential surface (12) in the form of an oblique truncated cone, wherein a contour line of this oblique truncated cone lies on the reducing piece outer circumferential surface (12) and forms a straight second reducing piece support line (14) which is aligned with the receiving chamber support line (8),f) wherein the second reducing piece (10) is connected on a side facing away from the receiving chamber (5) to a stabilizing element (18),which forms a continuation of the second reducing piece support line (14).

The present application relates to the technical field of the detection of the corner angle of the weld transition area of special equipment such as pressure vessels and boilers. A kind of automatic detection method of corner angle fusing point cloud and image segmentation is disclosed, by combining binocular stereo vision, AI segmentation and three-dimensional point cloud fitting technology, the included angle between the extension surface of the base material on both sides of the weld and the weld forming surface and its spatial distribution are automatically obtained, which can quantitatively characterize the bending degree of the weld transition area and the sharp degree of the weld toe. The specific steps are as follows: construct point cloud data and form a rotation matrix to align the weld main shaft coordinate system; a standard cylindrical geometric template coaxial with the weld axial direction is constructed in three-dimensional space, and the standard cylindrical geometric template obtained by fitting is used as the basis to form the position of the standard cylindrical template that best matches the outer surface of the actual measured object, a zero point for calculating the corner angle is constructed, the radial distance from the zero point to the outer surface of the standard cylindrical template is calculated, and the quantitative result of the weld corner angle is obtained.

The invention discloses a disease texture mapping method for a uniform-section cylindrical pier, and belongs to the technical field of bridge infrastructure detection and maintenance. In order to solve the problem that in the prior art, geometric priori cannot be fully utilized, high-cost dense reconstruction and a general triangulation process still need to be executed repeatedly, and resource waste is caused, multi-view image acquisition and SfM sparse reconstruction positioning, foreground mask and point cloud coarse filtering, cylindrical geometric priori modeling and curved surface parameterization mapping, disease segmentation and texture mapping are performed. Compared with an existing traditional process of sparse reconstruction-dense reconstruction-general grid generation-mapping, the method does not need dense reconstruction and general triangularization, and can quickly obtain a cylindrical texture grid model which is stable in topology, closed in seam and good in texture consistency under the conditions of multi-angle shooting and local shielding.

The application discloses an experimental test and evaluation method for simulating breakage of a nuclear fuel rod and escape characteristics of fission products, which comprises consideration of similarity criteria, and ensures that the cylindrical geometry of the broken fuel rod can simulate the flow characteristics of the flow field near the break along the axial direction of the cylindrical surface; and the flow similarity in the experimental section is realized by Re>10 5 The flow field enters the self-modification area; the critical break diameter is determined based on the blocking flow theory; the specific experimental conditions are determined by single variable control processing of multiple factors; the release rate of fission products per unit time and the escape rate of fission products finally entering the coolant are divided into two experiments of fuel rod constant internal pressure and fuel rod sealing for measurement; and high-confidence uncertainty evaluation is carried out by using A and B two types of evaluation components; and the experimental results are used to fit the fission product escape rate coefficient model. The application solves the problems of poor reliability of experimental extrapolation, blind selection of working conditions and incomplete evaluation system, and provides high-precision benchmark data for nuclear safety analysis programs.

The application provides a three-dimensional reconstruction method of a bridge underwater pile pier structure combining structure priori and feature fusion, comprising: obtaining multi-view surrounding underwater images of the bridge underwater pile pier; generating a sparse three-dimensional point cloud of the pile pier based on the underwater images, and fitting to obtain cylindrical geometric parameters of a pile pier body; converting the sparse three-dimensional point cloud into a three-dimensional Gaussian point cloud, and the three-dimensional Gaussian point being represented by a spatial position, a covariance matrix and a transparency parameter; constructing and optimizing a total loss function, and the total loss function fusing a pixel reconstruction loss term, a cylindrical geometric priori loss term and an underwater radiation transmission loss term, wherein a constraint weight applied to a pile pier disease area by the cylindrical geometric priori loss term is lower than a constraint weight applied to a pile pier body area, and geometric deviation of the disease area relative to an ideal cylindrical shape is allowed; and iteratively optimizing parameters of the three-dimensional Gaussian point cloud by minimizing the total loss function, and generating a three-dimensional model of the bridge underwater pile pier structure.

Thermoelectric facade generator (1) for a ventilated facade (2) of a building (3) which has a ventilation gap (4a), in particular a curtain wall facade (2) which has a ventilation gap (4b), characterized in that the thermoelectric facade generator (1) has a cylindrical geometry, in particular a cylindrical outer geometry and a cylindrical inner geometry.

The invention relates to a composite blade (5) for a turbine rotor, for example unducted propeller, comprising a skin (6) made of woven fibers and forming the external profile of the blade, and an attachment piece (11) having a cylindrical geometry in the direction of the span starting from the blade root (9), intended to hold the blade (5) on the hub of the rotor, characterized in that the composite blade further comprises a spar (16) having the structure of a hollow tube made of woven carbon fibers, fixed to the attachment piece (11) and extending on at least a part of the span of the blade (5) inside the skin (6). The invention also relates to a propeller comprising said blade and to a method for manufacturing said blade.

A rotary stamping jig and method of use for adding micro-text at controlled angular increments to a media. A disk-shaped media is secured in a disk-shaped media recess spindle with a stepped cylindrical geometry. A spindle enclosure rotatably retains the spindle, and a bottom plate is used to secure the spindle in the spindle enclosure. An alignment table with one or more alignment shafts is removably placed onto the spindle enclosure over the disk-shaped media and is used to position stamps for engraving the disk-shaped media. A ball-plunger-and-toothed-ratchet interface provides tactile rotational indexing, enabling the user to apply micro-text at controlled angular increments.

This application relates to the field of visual inspection technology, specifically to a visual inspection method and system for leaking tubular packaging. The method includes: acquiring multi-angle illumination images of the tube to be inspected and performing geometric positioning and incident angle cosine compensation to synthesize a geometrically corrected reflection map; performing Gaussian difference frequency decomposition to obtain high-frequency texture components and low-frequency basis components, and calculating the frequency ratio map to be inspected; calculating the frequency offset from the mean of the ratios to a reference frequency to generate a binary anomaly mask; performing morphological processing and connected component analysis, and determining the leakage level based on the physical area. This application effectively eliminates the systematic non-uniform reflection distribution caused by the cylindrical geometry of the tube, significantly improving the signal-to-noise ratio starting point for feature extraction.

A device (10) for enhancing the exchange between a liquid (W) and a textile material (T) is disclosed. The reinforcement device (10) comprises a body having a cylindrical geometry, the body comprising a central rod-shaped support structure (12) extending in an axial direction (A), a pair of opposing end plates (14) mounted in an integral manner on the central support structure (12) at respective distal ends (16) of the central support structure (12), and a plurality of blades (22) and / or channels (30) extending in an axial direction. Each blade (22) and / or channel (30) is mounted in an integral manner on the central support structure (12) between the two opposite end plates (14), and each blade (22) and / or channel (30) has an axial length (L) substantially equal to the axial distance between the two opposite end plates (14). Each blade (22) includes a channel structure (30) including a base wall (24) and a pair of radial walls (26, 28). The radial walls (26, 28) extend bifurcate from the respective base wall (24) such that the area of the open surface of each channel structure (30) is larger than the area of the respective base wall (24).

The invention relates to the technical field of corner angle detection of weld transition areas of special equipment such as pressure vessels and boilers. The invention discloses a point cloud and image segmentation fused corner angle automatic detection method, which combines binocular stereoscopic vision, AI segmentation and three-dimensional point cloud fitting technologies to automatically obtain an included angle between a base metal extension surface and a welding seam forming surface on two sides of a welding seam and spatial distribution of the included angle, and can quantitatively characterize the bending degree of a welding seam transition area and the sharpness of a weld toe. The method comprises the following specific steps: constructing point cloud data, forming a rotation matrix, and aligning a welding seam main shaft coordinate system; constructing a standard cylindrical geometric template coaxial with the axial direction of the welding seam in a three-dimensional space, forming a standard cylindrical template position most matched with the outer surface of an actual measured object on the basis of the standard cylindrical geometric template obtained by fitting, constructing a zero point for calculating the angle, calculating the radial distance from the zero point to the cylindrical outer surface of the standard cylindrical template, and calculating the angle of the measured object. And obtaining a quantitative result of the welding seam angle.