6results about How to "Stable and strong" patented technology

This invention relates to a method for extracting natural gas hydrates and the perfluorocarbon extractant used therein. The perfluorocarbon extractant comprises a viscosity modifier, an interface modifier, and a solvent; the viscosity modifier includes perfluorotributylamine; and the interface modifier includes perfluoropolyether and / or perfluorobutyric acid. The perfluorocarbon extractant of this invention exhibits high solubility for methane, strong hydrophobic properties, and stable physicochemical properties. During natural gas hydrate extraction, it allows methane released after hydrate decomposition to preferentially enter the extractant phase in a dissolved state and migrate within the reservoir, thereby achieving single-phase liquid extraction of methane. This technical approach can weaken or even eliminate the Jamin effect and seepage blockage caused by gas-liquid two-phase mixing, reduce reservoir flow resistance, and improve the extraction efficiency and continuous gas production capacity of natural gas hydrates in silty clay reservoirs.

The application discloses a spring steel wire section shaping device, which comprises a workbench, a guiding assembly, a traction assembly and a shaping assembly which are sequentially arranged on the workbench, the traction assembly comprises two symmetrically arranged mounting racks, a mounting plate arranged on the mounting rack, an upper traction roller and a lower traction roller arranged on the mounting plate, the shaping assembly comprises two symmetrically arranged vertical racks, a vertical plate arranged on the vertical rack, an upper shaping roller and a lower shaping roller arranged on the vertical plate, and a driving device for synchronously driving the upper traction roller, the lower traction roller, the upper shaping roller and the lower shaping roller to synchronously rotate is arranged between the traction assembly and the shaping assembly. The device has the following beneficial effects: the spring steel wire is subjected to uniform pressure in the whole processing process through accurate control of traction force and shaping pressure, thereby ensuring the consistency of the diameter and the accuracy of the section shape of the spring steel wire, and effectively solving the problem of local fracture caused by large diameter difference.

The utility model relates to the technical field of foamed plastic production equipment, and provides a mechanical foaming machine for plastic production, the mechanical foaming machine comprises a barrel and a cover plate, the cover plate is provided with an air inlet pipe and a storage bin, the cover plate is provided with a first feeding hole, the storage bin communicates with the barrel through the first feeding hole, and an intermittent limiting plate is rotatably mounted on the cover plate; the intermittent limiting device has the advantages that the second driving component is started to drive the intermittent limiting plate to rotate through the transmission mechanism, when the second feeding hole is communicated with the first feeding hole, the through hole is communicated with the air inlet pipe, and when the second feeding hole is communicated with the second feeding hole, the intermittent limiting plate is driven to rotate through the transmission mechanism; gas enters the cylinder through the through hole, and raw materials enter the cylinder through the second feeding hole, so that the raw materials and the gas intermittently enter the cylinder, and the mixing efficiency of the raw materials and the gas is improved.

This utility model relates to a rotary kiln lining structure; each ring of the inner lining layer is provided with at least four evenly distributed lifting bricks, the inner surface of which protrudes from the inner surface of the microporous energy-saving inner lining brick. The lifting bricks on each ring of the inner lining layer are positioned one brick in the direction of rotary kiln operation, and form a corrugated spiral protrusion structure for tipping, lifting, and pushing materials. This improves the heat energy conversion rate, thereby improving the quality stability of the rotary kiln, increasing output, saving energy and reducing consumption, and achieving significant environmental protection effects, ultimately achieving the goal of a low-carbon economy.

The utility model provides a pipeline connecting device and a pipeline splicing structure, the pipeline connecting device is used for connecting two adjacent pipelines, the faces, close to each other, of the two adjacent pipelines are a first face and a second face respectively, the pipeline connecting device comprises a first fixing piece, a second fixing piece and a third fixing piece, the first fixing piece is connected with the first face and the second face; the first connecting assembly is connected with the first fixing piece and a pipeline where the second face is located; the second connecting assembly is connected with the first fixing piece and a pipeline where the second face is located, and the second connecting assembly and the first connecting assembly are arranged in a stacked and staggered mode; the multiple reinforcing pieces are arranged on the sides close to the first connecting assembly and the second connecting assembly, and the multiple reinforcing pieces are wrapped by the first connecting assembly and the second connecting assembly; wherein a pouring material covers the outer part of the pipeline connecting device. According to the utility model, the connection between the pipelines is more convenient and quicker.

The utility model discloses a shielding cover for a fairlead, and relates to the technical field of fairleads. The fairlead device comprises a fairlead casting, a shielding plate, a transmission mechanism and a limiting mechanism, the fairlead casting is installed on a bulwark, a shaft body is arranged at the corner of the bottom of one side of the fairlead casting, one corner of the bottom edge of the shielding plate is rotationally connected with the fairlead casting through the shaft body, and the transmission mechanism comprises a rope body, a reversing wheel and a take-up device. One end of the rope body is connected with the front side face of the shielding plate, the reversing wheel and the take-up device are both fixed to the bulwark, the reversing wheel is located above the outer side of the fairlead casting, and the other end of the rope body bypasses the reversing wheel and then is connected with the take-up device. Through the design of the turnover shielding plate, the fairlead can be completely covered and shielded, the efficient protection and sealing effect is achieved, meanwhile, the fairlead can be completely exposed after turnover, normal use of the fairlead is not affected, and the use safety of the fairlead is improved.