62results about How to "Improve contact conditions" patented technology

The invention belongs to the field of fuel cells, and particularly relates to a generating and energy storage integrated device based on direct carbon fuel cells (DCFCs) with a liquid metal positive electrode. The generating and energy storage integrated device comprises a metal molten pool, the liquid metal positive electrode, the tubular solid oxide direct carbon fuel cells (SO-DCFCs) and a fluidization air distributing feeding system, wherein the tubular SO-DCFCs can be blind pipes and through pipes and can be inserted into the metal molten pool vertically or horizontally; the feeding system carries a fuel and a positive electrode material into the metal molten pool by virtue of carrier gas, and substances in the molten pool are stirred. The generating and energy storage integrated device provided by the invention has the advantages that chemical energy in the fuel and surplus electric energy in an power grid are changed into chemical energy in the liquid metal positive electrode to be stored, and the integration of a generating device and an energy storage device is realized; the integrated device is simple and compact, the reactivity of the carbon fuel and the metal positive electrode is high, the property of the cell is good, the friction of the cell caused by liquid state positive electrode fluidization is small, the service life of the cell is long, the seal is easy, the collection is convenient, and a large-scale electric pile is convenient to form.

To provide a braking device for a vehicle, which is capable of switching properly between single braking for one of front and rear wheels and combined braking with CBS according to the driving conditions of the vehicle, and of thereby achieving the balance between active vehicle controllability based on a driver's intention and braking performance. Brake systems respectively for the front and rear wheels are provided so that brake caliper assemblies respectively for the front and rear wheels can be operated independently of each other with brake operating sections exclusively for the brake caliper assemblies for the front and rear wheels, respectively. The brake system for the front wheel is provided with a hydraulic pressure modulator capable of feeding a braking force to the brake caliper assembly for the front wheel. When a rear wheel slip ratio exceeds a threshold value under rear brake operation, a controller activates the hydraulic pressure modulator for the front wheel to start braking the front wheel.

The invention discloses a device and method for plastic formation of micro parts through manual submerging type cavitation jetting. The method comprises the following steps: enabling a working fluid to flow towards a pressurizing cylinder and a speed-regulating valve through an outlet of a three-way valve, and enabling the working fluid to enter a nozzle after the pressure and flow of the workingfluid are increased; opening a stop valve, spraying nano-scale abrasive particles in a micro-sized abrasive particle tank into the nozzle to be mixed with the fluid, and spraying the fluid out throughan outlet in the lower end of the nozzle; and introducing the residual fluid in the three-way valve to enter a casing pipe from another outlet of the three-way valve through a depressurizing valve. When uniformly mixed nano-scale abrasive particles and the fluid are sprayed out from the outlet of the nozzle and collide with the low-pressure fluid in the casing pipe, strong shear is generated, anda large number of vacuoles are generated and are sprayed to to-be-machined micro parts; and cavitation jetting is combined with the nano-scale abrasive particles, a mutual promotion effect is achieved, the cavitation is promoted, the plastic formation of the micro parts is promoted, the machined positions are not cracked, and the surface polishing and strengthening effects on a formed site of a workpiece are promoted, so that the device can meet the requirements on the strength, fatigue durability and the like of the workpiece.

The invention provides a stirring friction and transient liquid phase diffusion welding method for connection of dissimilar materials. Stirring friction welding and diffusion welding are combined, heat generated by stirring friction is used as a heat source of the diffusion welding, the heat source can move by continuously moving a stirring head in a welding process, so that different regions of a head to be welded is welded, other fixed equipment is not required in the welding process, heads to be welded in various shapes and sizes can be welded, and shortcomings that in the prior art, other fixed equipment is required to provide a heat source, so that cost is increased, the size and the shape of a head to be welded are easily limited by welding equipment are overcome. The stirring friction and transient liquid phase diffusion welding method has the advantages of low cost, wide application range and excellent mechanical property of welding joints.

The present invention provides a lock-up clutch mechanism for a torque converter, comprising a lock-up piston and a front cover opposed to the lock-up piston and wherein a friction material having a friction surface is secured to one of the lock-up piston and the front cover, and the friction surface includes an outer peripheral friction surface which is engaged at an initial stage of engagement between the lock-up piston and the front cover and an inner peripheral friction surface which is engaged upon tightening, and the outer peripheral friction surface has a taper with respect to the inner peripheral friction surface, and the inner peripheral friction surface and the outer peripheral friction surface are subjected to a cutting operation.

The invention provides an ultraviolet/titanium dioxide (UV/TiO2) reactor for disinfecting drinking water treated by the activated carbon, aiming at solving the problem on the biosafety of bacteria, particularly the carbon-adsorbed bacteria in drinking water treated by activated carbon. The UV/TiO2 reactor is an integrated UV/TiO2 reactor system which has the advantage of disinfecting by UV and the characteristic of catalyzing by TiO2 and is optimized and integrated with the process. The UV/TiO2 reactor can effectively inactivate the free bacteria and the carbon-adsorbed bacteria in the drinking water treated by the activated carbon, can ensure the disinfected drinking water to reach the sanitary standard for drinking water (GB5749-2006) and can bear the water supplying load change on some degree, thereby having wide application prospect.

The invention discloses a method and a structure of a taper roller bearing low friction. The invention causes the angle between a large retaining ring of the taper roller bearing and a raceway generatrix more than 90 DEG and reduces the ball diameter of the sphere at one end of the taper roller, meanwhile, the invention implements the object that the contact between the taper roller sphere and the large retaining ring is changed from crossed multi-point contact into slippery one-point contact; meanwhile, the invention presents the angle range is 90 DEG-93 DEG; furthermore, the ball diameter complies with the specific requirement of 40%-80% of the stipulated value of the existing drawing of the products. The invention is beneficial for reducing the friction, reducing the abrasion between the large retaining ring and the sphere and implementing the high-speed heavy loading of the taper roller bearing.

The invention discloses a liquid-accommodation diversion type drop pipe comprising a pipe body, overflow weirs, single-stage or multiple-stage liquid accommodating chambers clinging to the tower wall and pipe wall, liquid accommodating plates of the bottom of the pipe body and drop plates. According to the drop pipe, the liquid phase and gas phase flowing and contacting state in a tower is changed, the gas and liquid contacting and separating strength is enhanced, the purposes of improving the tower distillating efficiency and operational flexibility and increasing the tower flux can be achieved, the tower blockage prevention capability is improved, the tower plate pressure drop is reduced, energy consumption and equipment investment are reduced, and the comprehensive performances of the tower are improved.

In a belt type continuously variable transmission having a variable width drive pulley, a variable width driven pulley, and a metal V belt, which is disposed around the drive and driven pulleys, the contour of the surfaces (V faces) in contact with the metal V belt in the cross-sectional view through the axes of the drive and driven pulleys is an arc that has a first radius of curvature rp and is convex to the metal V belt. The contour of the surfaces (V faces) in contact with these two pulleys in the cross-sectional view perpendicular to the longitudinal direction of the metal V belt is an arc that has a second radius of curvature re and is convex to the drive and driven pulleys.

The invention discloses macroporous resin for adsorbing high-concentration rhenium. The macroporous resin for adsorbing the high-concentration rhenium is prepared by the following preparation steps: preparing a macroporous divinyl benzene-methyl acrylate copolymer skeleton by adopting a suspension polymerization method, and then performing chloromethylation on small copolymer spheres; soaking theprepared chlorine spheres in methyl alcohol for swelling after the chlorine spheres are washed and dried; and adding diaminopro to perform amination reaction to obtain macroporous weak alkaline ion exchange resin. The invention also provides a columnar ion exchange device using the resin; a set of heat exchange component is arranged on the periphery of an ion exchange column, so that the temperature of the ion exchange column is reduced to promote the adsorption of rhenium. According to the ion exchange resin and the device provided by the invention, the problems of low adsorption rate and lowexchangeable capacity of the common ion exchange resin under high rhenium concentration and common operation conditions are solved; the rhenium ion exchange efficiency is greatly improved; and high-efficiency enrichment and recycling of the rhenium are promoted.

The forming apparatus has top and bottom die assemblies which form a heated silica glass material by press forming. These top and bottom die assemblies include, respectively, mold dies, which are made of isotropic carbon, and core molds, which are made of vitrified carbon. The heating and pressing time of a silica glass element, which requires a high forming temperature, is shortened by pinching the silica glass material between top and bottom core molds by controlling a torque so as to produce a close contact condition which permits heat transfer from the top and bottom core molds to the silica glass material between the top and bottom core molds.

The turning bearing has a separator whose leading and trailing sides are concaved to fit over circular rolling surfaces of the rollers to provide concavities where concaved surfaces lying either in parallel with and in perpendicular to the axis of the roller. The rollers fit in the separator in either of two different directions. The separator can be easier installed into the raceway through a loading hole without the posture of the separator in mind. The separator has a quadrilateral in a transverse cross-section perpendicular to a traveling direction of the separator of which a peripheral surface is in opposition to the outer ring and the inner ring. The separator has a center through-hole. The concaved surfaces in the separator are contoured in arced or curved profiles and bulge gradually closer to a circular edge of the through-hole to form arcing bulges at bottoms of the curved surfaces.

To record an image on a thermosensitive color recording material, a heating element array (15) of a thermal head (14) is pressed onto an obverse side of the thermosensitive color recording material (2) while a platen roller (13) supports the color recording material from its back side. The thermosensitive color recording material is conveyed first in a forward direction for recording a yellow frame, next in a backward direction for recording a magenta frame, and then again in the forward direction for recording a cyan frame. A rotary shaft of the platen roller is mounted to bearing members (40) that are caused by a pair of piezoelectric actuators (44) to slide back and forth along conveying directions of the thermosensitive color recording material, thereby to displace a rotary center of the platen roller upstream from a center of the heating element in either conveying direction of the thermosensitive color recording material.

The invention discloses an automatic telescopic collision-prevention device of an inkjet printer. The automatic telescopic collision-prevention device comprises a mounting fixing frame, wherein an up-down adjusting platform is arranged on the mounting fixing frame, a spray head mounting platform is arranged on the up-down adjusting platform, a telescopic device is arranged on the up-down adjustingplatform, a collision-prevention device is arranged between the up-down adjusting platform and the spray head mounting platform; and the telescopic device comprises an automatic telescopic guide railarranged on the upper end surface of the up-down adjusting platform, an automatic telescopic air cylinder arranged on the upper end surface of the up -down adjusting platform and an automatic telescopic sliding seat arranged on the lower end surface of the spray head mounting platform, the automatic telescopic sliding seat is arranged on the automatic telescopic guide rail in a sliding mode, theautomatic telescopic air cylinder is parallel to the automatic telescopic guide rail, one side of the automatic telescopic sliding seat is provided with a telescopic seat in an extending mode, and theoutput end of the automatic telescopic air cylinder is fixedly connected with the telescopic seat. When a gypsum board is suddenly widened, the gypsum board pushes a spray head of the inkjet printerto move backwards to prevent the spray head from being collided, the spray head of the inkjet printer and the gypsum board are protected, and the jet printing quality of the edge part of the gypsum board is improved.

A heating furnace includes a bolt inserted through an insertion hole in a part of a heater and further inserted into a hole on a tip surface of an electrode rod. A first washer is between a bearing surface of the bolt and one face of the heater. A second washer is between another face of the heater and the tip surface. The relation of: |L₀·α₀−(T_H·α_H+T_B·α_B+T_E·α_E)|·ΔT≦0.15(T_B+T_E) is satisfied, where L₀ is an interval between the bearing surface and the tip surface, α₀ is a linear expansion coefficient (LEC) of the bolt, T_H, T_B and T_E are thicknesses of the part, first and second washers and α_H, α_B and α_E are their LECs, respectively, and ΔT is a temperature increment quantity of a part where the heater and the electrode rod are fastened by the bolt.

The invention discloses a flexible clearance eliminating gear with rigidity easy to control. The gear comprises a first malposed gear and a second malposed gear which are jointly connected in the axial direction of a transmission shaft, wherein a shaft sleeve is also connected among the first malposed gear, the second malposed gear and the transmission shaft; key grooves are paired in a connected position of the shaft sleeve and the first malposed gear, and a key is connected between the paired key grooves; a boss is also arranged at a connected part of the shaft sleeve and the second malposed gear, at least a paired penetrating groove is formed in corresponding positions of the boss and the second malposed gear which sleeves outside the boss in the circumference direction, and a plate spring is connected between each pair of the paired penetrating grooves in the shaft sleeve; the paired penetrating groove in the second malposed gear and the key groove in the first malposed gear are relatively malposed in the circumference direction. For the gear disclosed by the invention, a connection structure of the flexible clearance eliminating gear is simplified, the problem that the normal contact pressure of a meshed tooth side of a gear pair is hard to be ensured effectively is solved, a clearance in the tooth side is flexibly eliminated, and the impact noise of the gear is eliminated.