7 results about "Central pressure" patented technology

The invention discloses a magnetic type explosion suppression device capable of directionally throwing, and belongs to the technical field of explosion safety protection. The device comprises a magnetic attraction base, a main cylinder body, a hydrogen leakage detection device, an aerogenesis power cabin, a piston casting assembly and a plurality of explosion suppression sub-balls pulled by inhaul cables. A central pressure-bearing column, a piston and an aerogenesis power cabin are arranged in the main cylinder body from top to bottom; the explosion suppression sub-ball is loaded in a positioning groove in the top of the piston and connected with the top end of the center pressure-bearing column through a fixed-distance pulling and launching mechanism, and the top end of the explosion suppression sub-ball is locked through a fixing pull ring. During working, the detector transmits a signal to trigger the aerogenesis power cabin to work, and the piston is pushed to cast the sub-ball array to a predetermined space; and the stay rope is straightened immediately, the safety pin of the sub-ball is pulled out, an internal pure mechanical percussion and gas generation mechanism is triggered, the sealing film is broken through to release the explosion suppressant, and a uniform and three-dimensional explosion suppression cloud cluster is formed. The device has the advantages of being convenient to install, rapid in response, uniform in air release, free of coverage dead angles and the like, and is particularly suitable for directional active protection of limited spaces such as hydrogen energy equipment cabins.

This invention relates to the field of functionally graded materials, specifically to a multidimensional gradient composite material structure and its design method for high-speed impact loading. The composite material structure includes a main body composed of multiple material gradients, a function-controlled outer edge slope, and a bottom high-density layer. By adjusting the side pressure distribution and enhancing the central pressure through the high-density layer, the deformation of the homogeneous material under high-speed loading is effectively reduced, with a maximum deformation ≤0.06mm, and the launch velocity is increased, with a central final velocity ≥13km / s. This invention is applicable to three-stage lightweight gas gun loading technology, providing high-precision data support for protective material research in aerospace and planetary science fields.

This invention discloses a prestressed anchorage system using pre-tensioned steel strands and its construction method. The system includes an upper anchor head, steel strands, a stabilizing plate, an isolation pipe, a central pressure bar, and a lower anchor head. The steel strands pass sequentially through the lower anchor head, the stabilizing plate, and the upper anchor head, with both ends connected to the upper and lower anchor heads respectively. The stabilizing plate is installed at intervals on the steel strands and fixedly connected to them. A through hole is provided in the center of the stabilizing plate, through which the isolation pipe passes. The central pressure bar passes through the isolation pipe. This invention utilizes steel strands and anchorages to form a self-balancing pre-tensioned steel strand prestressed anchorage system with the central pressure bar. This system offers secure anchorage, reliable performance, high material utilization, and convenient and quick on-site construction. The pre-tensioned steel strand prestressed anchorage system using a pressure release device allows for rapid release of large-tonnage prestress and steel strand tensioning. Construction is convenient, quick, and efficient. The tensioning platform and jacks can be removed after tensioning, improving equipment utilization.

The invention provides a press segmented closed track generation method based on consistency safety Bayesian optimization, and the method comprises the steps: extracting a compaction response and infiltration capacity parameter range under the upper limit constraint of a press through a force-displacement curve and an in-mold pressure signal which are obtained through one-time pressure test; establishing an extrusion flow and gas discharge combined calculation model under mould geometry and cavity boundary conditions, and determining displacement points when the edge sealing starts and finishes displacement and the central pressure reaches a drop threshold value; introducing the physical constraints into a scoring network, determining the speed and the residence time of each section in a trajectory parameter range by adopting secure Bayesian optimization, generating a target section closed trajectory which meets the condition that the central pressure is reduced to a threshold value before edge sealing and does not trigger the upper limit of equipment, and outputting a corresponding control instruction; according to the method, under the condition of considering material and working condition fluctuation, the exhaust reliability and the forming quality in the pressing forming process are improved, and takt time and equipment safety are both considered.

The present invention discloses a vacuum flask with a lid and a central pressure switch, which prevents splashing and incorrect installation, comprising a flask body and a lid, wherein the lid comprises an upper cover, a sliding switch, a central pressure switch and an inner stopper, wherein a combined sealing ring is provided on the lower part of the inner stopper, wherein an annular projection and an extension are formed on the upper part and the lower part of the combined sealing ring respectively, wherein when the lid is connected to the flask opening part of the flask body, the annular projection rests tightly against the inside of the flask opening part and the extension rests tightly against a rib on the inner wall of the flask opening part;wherein the can opening part is provided with a positioning lock which interacts with the slide switch, wherein an annular shoulder with a positioning channel is provided on the inner stopper in which a latch of the slide switch is arranged during installation, wherein a discharge channel wall is formed on the inner wall of the can opening part associated with the spout, wherein the side surface of the annular shoulder is adapted in its shape to the corresponding area of ​​the discharge channel wall. The invention is simple in design, easy to assemble and can prevent splashing and incorrect installation by means of the design of the combined sealing ring and the annular shoulder.

The fixing equipment comprises a main polishing head, the main polishing head comprises a pressure plate and a plurality of clamping blocks installed in the circumferential direction of the pressure plate, a ceramic disc is arranged on one side of the pressure plate in an abutting mode, and the clamping blocks abut against the circumferential direction of the ceramic disc. A plurality of wafers are evenly arranged on the side, away from the pressure plate, of the ceramic disc, a pressurizing assembly is arranged in the pressure plate and comprises a pressurizing hole, a piston structure, a pressurizing plate, a cover plate and an air inlet nozzle, the pressurizing hole is formed in the center of the pressure plate and penetrates through the pressure plate, and the piston structure is arranged in the pressurizing hole in a sliding mode; the piston structure blocks the pressurizing hole, the pressurizing plate is installed on the side, facing the ceramic disc, of the piston structure, the cover plate is installed on the pressure plate on the side, away from the ceramic disc, of the pressure plate, the pressurizing hole is closed by the cover plate, and the air inlet nozzle is installed on the cover plate and communicated with the pressurizing hole. The method has the effect of improving the flatness of the surface of the wafer.