52results about How to "Improved resistance properties" patented technology

The invention relates to a lithium ion powder battery liquid cooling structure. The structure comprises a main body framework, a water intake end cover, a water exhaust end cover, a gasket, battery single bodies, a monitoring device, converged plates, converged sheets, bolts and other components, wherein the water intake end cover and the water exhaust end cover are connected together with the main body framework through interference fit so as to form 24 cylindrical empty cavities and 35 cooling liquid flow channels; the gasket is configured between the end covers and the main body framework; the battery single bodies are installed in the cylindrical empty cavities, and are connected in parallel by the converged sheets, and the positive and negative poles are leaded out by the converged plates; the monitoring device comprises two parts including a monitoring device main body and a monitoring device end cover, and is installed on the water intake end cover, and are fixed by fastening bolts. The lithium ion powder battery liquid cooling structure provided by the invention is novel, is convenient to manufacture and maintain, is significant in cooling effect, can control the working temperature of the battery within a reasonable temperature range, and can prevent safety hazard of thermal runaway and the like.

The invention relates to an energy self-sufficient modular spliced deep sea fishery breeding work ship which comprises a semi-submersible bow, flexible connecting devices and semi-submersible modular net cages, the semi-submersible bow and the semi-submersible modular net cages are connected through the flexible connecting device, and the adjacent semi-submersible modular net cages are connected through the flexible connecting device; the semi-submersible bow comprises a superstructure, a semi-submersible main body, a mooring device, a bow power device and a power generation device. The superstructure is installed in the upper portion of the semi-submersible body, the mooring device is installed in the head portion of the semi-submersible body, the bow power device is installed at the bottom of the semi-submersible body, and the power generation device provides power for the ship. The semi-submersible modular net cage comprises a semi-submersible platform and a net cage power device, and the net cage power device is installed at the bottom of the semi-submersible platform. The position can be continuously changed according to change of sea conditions and weather, effective water body exchange is guaranteed through the weather vane effect, towing is facilitated, and wave additional bending moment shearing force is weakened.

A gas-liquid two-phase flow sampler with variable ratios belongs to the field of fluid distribution. A gas-liquid two-phase flow uniform distributor mainly comprises a diversion pipe, a fixed distribution chamber, a rotary distribution chamber, a current rectifier and a differential pressure gauge, wherein diversion grooves are uniformly formed in the circumferential direction of the diversion pipe; a two-phase fluid is uniformly diverted through the diversion grooves formed in a pipe wall to enter the fixed distribution chamber and the rotary distribution chamber respectively. Flow characteristics of all diversion ports can be guaranteed to be identical through flow pattern adjustment and resistance regulation of an entrance. By adjusting the lengths of the diversion grooves at the upstream of the rotary distribution chamber, a distribution ratio can be regulated in the range of 0-100%. Compared with a current gas-liquid two-phase fluid sampling device, the gas-liquid two-phase flow uniform distributor has the advantages that the size is small, the structure is compact, the distribution ratio can be randomly adjusted, and a sampling fluid and a main fluid have the same gas-liquid components and are not affected by parameters such as flow velocities and flow patterns of a gas-liquid phase of the entrance.

The invention relates to the field of mass damper devices, in particular to a single mass damper device for hull overall vibration control. The single mass damper device for hull overall vibration control comprises a single TMD device for controlling horizontal overall vibration of a hull and a single TMD device for controlling vertical overall vibration of the hull. During working, a first TMD mass block in the TMD device for controlling the horizontal overall vibration of the hull is pulled by a first spring to move to and fro between two baffles on a guide rail; a second TMD mass block in the TMD device for controlling the vertical overall vibration of the hull is pulled by a second spring to vertically move on an upright; and therefore, shock is absorbed by using inertia force resistance and antiresonance provided by assistant mass. The single mass damper device for hull overall vibration control is suitable for horizontal and vertical low frequency overall vibration control designof a large-sized surface ship, and has an obvious vibration control effect on the horizontal and vertical bending vibrations of the hull; and the overall response generated by the ship under the action of external load can be reduced, and the overall resistance of the ship to the horizontal and vertical bending vibrations is enhanced.

The invention belongs to the technical field of airplane design, and relates to a self-adaptive adjustable low-resistance fairing, which comprises a fairing head part, a fairing back part, a plane body surface, a through hole, a coiled spring, a fixed sliding rail, a front end plate and a back sliding end plate. According to the invention, the conventional fairing is segmented, a set of simple flexible mechanism is added in a superposition form in the fairing, and the slenderness ratio of the fairing can be automatically changed according to the front and back pressure difference of the fairing, so that a wetted area is small and frictional drag is small when an airplane flies at a low speed, the slenderness ratio is suitable and the pressure drag is small when the airplane flies at a high speed, and the drag characteristics of the airplane at each flying speed are improved. The self-adaptive adjustable low-resistance fairing disclosed by the invention can be balanced between the pressure drag and frictional drag, the shape of the fairing can be self-adaptively changed according to the flying speed, flow separation on the fairing under a high-speed condition is restrained, and the vortex intensity at the tail part of the fairing is improved, so that the differential pressure between the front and the back of the fairing is reduced and the airplane flight resistance is reduced.

The invention discloses a spiral fluid disturbance and vibration suppression device for a marine riser. The spiral fluid disturbance and vibration suppression device comprises a riser (12), a plurality of sections of riser sleeves (14) which are sequentially connected are arranged on the outer surface of the riser (12) in a nested manner; each section of the riser sleeve (14) is provided with three spoiler groups (6) which are welded at equal intervals; each spoiler group (6) comprises a plurality of spoilers (5) which are distributed in a spiral line shape; and the spacing distance between any two adjacent spoilers (5) in each spoiler group (6) is equal. The disclosed spiral fluid disturbance and vibration suppression device for the marine riser can effectively suppress the fact that vortex-induced vibration of the marine riser occurs, has the characteristics of good omnidirectional vibration suppression efficiency and good resistance performance, and has the advantages of great practical significance.

The invention discloses a light emitting diode, which comprises a first electrode connected with a first semiconductor layer and a second electrode connected with a second semiconductor layer, whereinthe first electrode and/or the second electrode sequentially comprise/comprises a first reflecting layer, a connecting cushion layer and a second reflecting layer at least partially coating the connecting cushion layer, the material of the second reflecting layer comprises rhodium, platinum or ruthenium, and the first reflecting layer and the second reflecting layer are manufactured into a large-angle electrode structure through good stress characteristics, so that the photoelectric characteristics of the light-emitting diode is facilitated to be improved, and the product reliability is improved.

The invention discloses an assembling external restraining precast pile with stiffening ribs and capable of preventing bending and shear damage. The assembling external restraining precast pile comprises a precast pile body. An external restraining member is wrapped outside a pile head end of the precast pile body and formed by two steel members. A plurality of stiffening ribs are welded on the outer surface of the external restraining member, the trend of the stiffening ribs is the same as the axial direction of the precast pile body, and the stiffening ribs are distributed in an annular mode relative to the axis of the precast pile body. The precast pile has the advantage that the stiffening ribs are welded on the surface of the external restraining member of the pile head, and the pile side resistance is improved; bending and shear damage resistance of the precast pile is improved; the bending and shear damage resistance is only improved locally at a portion with largest bending moment shearing force, and engineering cost is saved; an assembling external restraining device is adopted at the pile head, pile head damage can be avoided, and construction is easy; and manufacturing and installing are convenient, members of all portions can be machined in a factory and then transported to a construction place, and assembling is finished fast.

The invention belongs to the technical field of unmanned ships, and particularly relates to a variable structure type wind, light and wave energy hybrid drive unmanned ship oriented to resistance reduction and collision avoidance. According to the invention, the wind energy, solar energy and wave energy in a marine environment can be fully captured and the variable structure capability is provided, namely, on one hand, water entering and water exiting of the wave flapping serial hydrofoils can be adjusted according to the grade of the sea condition, the wave energy can be fully absorbed under the high sea condition, and the resistance performance of the boat body is good under the low sea condition; and on the other hand, when the unmanned ship is berthed, the solar sail can be lowered, the solar panel outside the broadside of the ship body is folded, the sail and the solar panel are prevented from being collided when the unmanned ship is berthed, and good safety and reliability are achieved.

The invention belongs to the technical field of underwater vehicles, and discloses a long-endurance underwater vehicle and a control method thereof, and the long-endurance underwater vehicle comprises a bulbous bow cabin, a front ballast tank, a front air bag cabin, a main control cabin, a rear air bag cabin, a rear ballast tank and a stern cabin. The underwater vehicle is driven by a fuel cell-motor, the energy storage efficiency of the fuel cell is high, the energy density is large, the working stroke can be improved, high-temperature reaction water generated when the fuel cell works serves as a heat source, the buoyancy state of a boat body is adjusted with low energy consumption in cooperation with front and rear air bag devices, and gliding wings with adjustable attack angles are arranged on the two sides. In the gliding floating state and the gliding diving state, the resistance of the boat body can be reduced in the form of a specific attack angle and a specific navigational speed, non-driving posture adjustment is achieved, the turbine is combined with high-temperature reaction water of the fuel cell, the self-adaptive power generation function is achieved in the diving state, the working efficiency of the fuel cell can be fully improved, and the long-distance sailing function of the underwater vehicle is achieved.

The invention discloses a three-channel water surface composite yacht which comprises a main yacht body. Side bodies are arranged on the two sides of the bottom of the main yacht body respectively. Two middle yacht bodies are arranged between the two side bodies. Three channels are formed between the two side bodies and the two middle yacht bodies. Hydrofoil systems are arranged at the front ends or the rear ends of the three channels. Each hydrofoil system comprises a hydrofoil, a rotating rod and a control device, wherein the rotating rod penetrates through the hydrofoil, the rotating rod drives the hydrofoil to rotate, the control device is installed on the corresponding middle yacht body and connected with the hydrofoil through the rotating rod, and the hydrofoil is driven by the control device to rotate. According to the three-channel water surface composite yacht, through the combination of the good layout characteristic, good resistance performance and high shipping-direction stability of a three-channel skimming yacht and the rapidness and good comprehensive navigation performance of a hydrofoil yacht with controllable hydrofoils, the inherent defects of the three-channel skimming yacht and the hydrofoil yacht are well overcome.

A ship line of a kilo-tonnage bulk carrier comprises a bulk carrier hull, wherein the bulk carrier hull comprises a hull front part (1), a hull middle part (2) and a hull rear part (3); the hull frontpart (1) is a vertical bow of which the cross-section is of flaring side structure and of a medium U-shape; the hull middle part (2) is a parallel middle body which is smoothly connected with the hull front part (1); the hull rear part (3) is a square stern which comprises an outflow section (31) and a stern transition section (32); and the outflow section (31), the stern transition section (32)and the parallel middle body are smoothly connected. The technical scheme provided by the invention enables the kilo-tonnage bulk carrier to have a lower resistance under the condition of same tonnageand load capacity, so as to increase the speed of the bulk carrier and improve the economical efficiency of the bulk carrier.

The invention discloses a novel bow linear inland river ship. A bow of the novel bow linear inland river ship is provided with a bow perpendicular which is perpendicular to the horizontal plane; most of a bow contour line of the novel bow linear inland river ship, with designed draft as a center, is vertically downward in a longitudinal sectional drawing of the bow of the novel bow linear inland river ship; and the block coefficient Cb is 0.875, the waterline coefficient Cw is 0.954, the longitudinal prismatic coefficient Cp is 0.876, the vertical prismatic coefficient Cvp is 0.916, and the transverse prismatic coefficient Cxp is 0.887 when the aspect ratio of the novel bow linear inland river ship is 5.729 and the molded breadth draft ratio is 4.129. The novel bow linear inland river ship has the advantages of enabling bow linear types of inland river shipping ships to be enriched and being large in boatload and good in resistance performance.

Disclosed are an associated copolymer, a method for preparation of a polymer and a polymer prepared with the method, a use of the associated copolymer and/or the polymer in drilling fluids, and a drilling fluid containing the associated copolymer and/or the polymer. The associated copolymer comprises acrylamide structural units, zwitter-ionic structural units, and cationic polyamine structural units at a specific proportion, and the cationic polyamine structural units have specific kinematic viscosity and cationic degree; thus, when the associated copolymer is used as a viscosity improver for drilling fluids, the obtained drilling fluid not only has favorable apparent viscosity after it is aged at a high temperature, but also has high dynamic shear force, and is resistant to high temperature up to 200° C. or above, resistant to NaCl up to saturated concentration, and resistant to CaCl₂ up to 20 wt % concentration.

A self-service material frame used for circulation of produced parts comprises vertical supporting rods, transverse supporting rods and goods shelf rods. The vertical supporting rods, the transverse supporting rods and the goods shelf rods are assembled together through insertion sleeves. The goods shelf comprises at least two storage layers. Rolling wheel assemblies are arranged in the storage layers. Each rolling wheel assembly comprises an installation base. Multiple rolling wheels are installed on each installation base. The two sides of each installation base are buckled on the corresponding transverse supporting rods through buckling pieces. The storage layer on the upper layer is obliquely arranged. Flexible cushions are arranged on the vertical supporting rods on the lower sides of the storage layers. Signboards are further arranged on the storage layers. Partition rods are arranged on the storage layers so that the storage layers can be divided into multiple storage spaces. Photosensitive sensors are arranged on the partition rods and are electrically connected with indicator lamps on the material frame through a control circuit. The self-service material frame is convenient to assemble and flexible to use, objects are conveniently taken without mistakes, and the objects are not likely to fall; and meanwhile, users are reminded of object supplementation before all the objects are taken, and the self-service material frame is quite convenient to use.

The invention discloses a series connection type air humidity mixed cooling system and an air cooling island system in order to solve the problems that in the thermal power generation field, pipelinebackpressure is high, and cooling efficiency is low. The series connection type air humidity mixed cooling system comprises a steam distribution pipeline, a water-steam separation pipeline, a co-flowair cooling heat radiator, a condensation water collection pipeline and a residual air collection pipeline. The invention further discloses a cooling method. The cooling method comprises the air cooling step and the water-steam separation step. The adverse flow area in a traditional air cooling island is omitted, the original adverse flow area is modified into a co-flow area, the heat transfer effect of the air cooling heat radiator is improved, and the resistance of the air cooling heat radiator is reduced; and the structure of the air cooling heat radiator is simplified, the air cooling heatradiator is only provided with a co-flow area pipe bundle, the resistance characteristic of the air cooling heat radiator is improved, and flow resistance distribution of the steam-water side is optimized.