6results about How to "Comprehensive detection effect" patented technology

The present invention relates to an offshore storage device for accommodating an inflatable liferaft, the inflatable liferaft comprising an internal volume containing a non-toxic gas, the internal volume having a controllable environment; an inflatable lifesaving device includes an interior volume, an uninflated inflatable lifesaving raft disposed in the interior volume, a gas cylinder disposed at least partially in the interior volume, the gas cylinder containing an inflation gas or a mixture of inflation gases for inflating the inflatable lifesaving raft, where a major portion of the inflation gas or the mixture of inflation gases is nitrogen or air, wherein the pressure indicator is operably connected with the gas cylinder to determine the pressure of the inflation gas in the gas cylinder.

This utility model discloses a high-performance concrete impermeability testing device, including a testing box and a test block. The test block is slidably connected inside the testing box, and a testing component is movably connected above the test block inside the testing box. The advantages are: by installing a pressure plate inside the testing cylinder and the pressure cylinder, and configuring an electric push rod for driving the pressure plate to adjust its displacement, this utility model achieves flexible and precise adjustment of the water pressure inside the testing cylinder and the pressure cylinder. Therefore, the testing device can perform more accurate testing on the concrete test block. Furthermore, it can control the pressure plate to increase the water pressure at an appropriate time and decrease it after an appropriate time, thus achieving a more comprehensive testing effect on the concrete test block. Alternatively, it can control the pressure plate to continuously increase the water pressure at a certain speed and gradually decrease it after reaching a set value, thereby achieving a linear testing effect.

The invention discloses a method and system for detecting the internal quality of a polyethylene pipeline hot-melt welding joint, and belongs to the technical field of pipeline quality detection.The method comprises the following steps that before a tensile test is carried out, ultrasonic quality detection is carried out on a casual inspection joint of a polyethylene pipeline set to be detected; dynamically determining an initial tensile rate based on the material grade and the material attribute parameter of the to-be-tested polyethylene pipeline group, and executing a first tensile test at the initial tensile rate; iteratively and dynamically adjusting the tensile rate of the tensile test of the next casual inspection joint based on the tensile test result of the previous casual inspection joint until the tensile test of each casual inspection joint is completed; dynamically executing fracture quality detection based on the fracture position and the fracture characteristic parameter of each spot check joint to obtain a fracture quality detection result of each first joint; and executing internal quality comprehensive detection based on the ultrasonic quality detection result, the fracture quality detection result and the tensile test result of each first joint.

The invention relates to the technical field of 3D printing equipment, and discloses on-line milling selective laser melting equipment which comprises an equipment body, a forming cavity is formed in the equipment body, a working platform is arranged in the forming cavity, and a powder spreading mechanism, a selective laser melting mechanism, a molten pool milling device and a periphery milling device are arranged corresponding to the working platform. According to the invention, through cooperation of visual monitoring and online milling of the molten pool, real-time discovery-instant removal of defects is realized, and defect accumulation caused by traditional offline detection is avoided; moving a milling assembly to the current detection cross section area through a peripheral milling device, carrying out milling treatment, and then repeating the operation until the outer side of the forming material is detected and treated; automatic operation of all mechanisms is coordinated by a control system in the whole process, manual intervention is reduced, and machining stability is improved; and the size precision, the surface quality and the mechanical property of the part are remarkably improved, the rejection rate is reduced, and high practicability and market popularization value are achieved.

The invention provides optical cable water seepage detection equipment and technology, and relates to the technical field of porous material permeability detection. Comprising a positioning support, limiting assemblies for limiting an optical cable are arranged on the side wall of the positioning support, the two limiting assemblies are arranged in parallel in a spaced mode, one limiting assembly comprises two rotating assemblies arranged in a spaced mode, and limiting rings for the optical cable to penetrate through are arranged on the side walls of the rotating assemblies. A detection device is arranged between the two limiting assemblies, the detection device comprises detection sleeves arranged on the outer side of the optical cable in a sleeving mode, two control telescopic rods and an adjusting device located between the two control telescopic rods are arranged between the two detection sleeves, and the top of the adjusting device communicates with an air control device through an air guide pipeline. Dynamic and static water seepage detection can be carried out on the optical cable, the water seepage detection process and result are enriched, and the efficiency and accuracy of optical cable water seepage detection are improved.