234results about How to "Reduce kinetic energy loss" patented technology

The invention discloses a fracturing conveying ground manifold system. The fracturing conveying ground manifold system comprises a fracturing tree, a high-low pressure manifold device, a high-pressureflange conveying pipeline, a ground fracturing control manifold device, an offset flange mechanism and a corner pipeline, wherein the high-low pressure manifold device is linearly connected with theground fracturing control manifold device through the high-pressure flange conveying pipeline; the ground fracturing control manifold device is connected with the fracturing tree through the offset flange mechanism and the corner pipeline; and the offset flange mechanism and the corner pipeline can realize adjustment of different heights and directions between the ground fracturing control manifold device and the fracturing tree. The fracturing conveying ground manifold system has the advantages that the whole manifold system is large in displacement, simple in structure, simple in layout, fewin pipelines, few in joints, linear in conveying, relatively low in kinetic energy loss and capable of being separated from the ground, effectively prolonging the service life of the manifold, realizing multi-wellhead zipper type operation and improving the operation efficiency of a fracturing well factory.

The invention relates to a key structure and an input device. The key structure comprises a key cap layer, a circuit layer, a touch generator, a support structure layer and an adhesion layer, wherein the key cap layer comprises a key cap region and a peripheral region; the peripheral region is adjacent to the key cap region; the circuit layer is arranged below the key cap layer; the touch generator is electrically connected with the circuit layer; the support structure layer is arranged below the circuit layer, and comprises an accommodating space; the touch generator is located in the accommodating space; and the adhesive layer is arranged between the key cap layer and the circuit layer and corresponds to the peripheral region. According to the key structure and the input device provided by the invention, the adhesive layer is only arranged on the part (namely the peripheral region) outside the key cap region, so that the kinetic energy loss when the touch generator vibrates can be effectively reduced. Furthermore, according to the key structure and the input device provided by the invention, the vibration effect can be strengthened, the appearance design can be reinforced, the operation convenience can be improved or the cost can be reduced through the key cap layer with different structure designs and different material choices.

A piston for a cylinder of a combustion engine includes piston crown including a piston bowl formed by an upwardly facing cavity, the piston bowl including a floor section with a central, and a side section, the side section connecting the inner section with an upper surface of the piston crown, wherein the side section is formed with mutually spaced apart ridges protruding towards the apex, and wherein the side section having at least one recess at an upper end of the side section connecting the side section with the upper surface of the piston crown.

The invention discloses a substation lifting mechanism for a skid round trip conveying system on a sedan white body assembly production line. The invention has a plurality of substation lifting mechanisms with the same structure, and each substation lifting mechanism comprises an erect first steam cylinder (2) under a first mounting plate (7) within a skid (6), an erect second steam cylinder (4) under the second mounting plate (5) inside the skid (6) and a synchronizer (3) which keeps the lifting speed of the first steam cylinder (2) in accordance with that of the second steam cylinder (4). The substation lifting mechanism for the skid round trip conveying system on the sedan white body assembly production line adopts the structure which can reduces the kinetic energy consumption, is convenient to maintenance, and relieves the workload of machine maintenance.

A unit-combination type heat transfer enhancement device of the invention relates to the field of the unit type heat transfer enhancement device which utilizes the fluid of a heat transfer pipe as the power, comprising rotors, a support frame, sleeve shafts and a connecting axis, wherein the support frame is fixed at the two ends of the heat transfer pipe; the two ends of the connecting axis are respectively fixed on the support frame; the centers of the sleeve shafts are through holes; a plurality of the sleeve shafts are arranged on the connecting axis in a penetrating manner; the rotors are arranged on the sleeve shafts in a penetrating manner; and one or more rotors is/are matched with one sleeve shaft. The rotor consists of flow-disturbing rotary vanes, a hinge structure and tail end spiral drive blades. The fluid in the pipe in the technical scheme drives the rotors to rotate at a proper speed by the tail end spiral drive blades, thus having the inhibiting and cleaning effects on the fouling deposit; the proportion of the length of the flat and straight part of the flow-disturbing rotary vane and that of the tail end spiral drive blades can be changed flexibly; and according to the practical needs, bulges are also arranged on the thin sheet of the edge to further disturb the fluid to flow, thus further improving the effects of the heat transferring and self cleaning.

The invention discloses an automatic steel rail duplex rust removing machine. The automatic steel rail duplex rust removing machine comprises a rack, engines and wheels connected to the lower portion of the rack, and is characterized in that the two engines are adopted and distributed on steel rails on the two sides respectively, the automatic steel rail duplex rust removing machine further comprises two soft shafts and two steering gears, one ends of the soft shafts are connected with rotating shafts of the engines through couplers, the other ends of the soft shafts are connected with input shafts of the steering gears, output shafts of the steering gears are connected with blade grinding wheels, the rack is fixedly connected with two connecting pieces, vertical adjusting pieces are arranged above the steering gears and elastically connected with the steering gears, connecting rods of the connecting pieces are connected with the vertical adjusting pieces, a transverse spring pull rod is connected between the vertical adjusting pieces of the steel rails on the two sides, and the rack is connected with a drive component. The kinetic energy of the engines is directly transmitted to the blade grinding wheels through the soft shafts, a duplex structure is adopted, synchronous automatic constant-speed rust removing can be carried out on pedal faces of the two steel rails at the same time, and the rust removing quality and efficiency are greatly improved.

The invention discloses a transversely-arranged double-power-source vehicle driving assembly. The transversely-arranged double-power-source vehicle driving assembly comprises a first power source, a second power source and an automatic transmission. The automatic transmission is provided with a first input shaft and a second input shaft. The power sources are connected with the two input shafts correspondingly. A first intermediate shaft, a second intermediate shaft and the second input shaft are arranged in the direction coaxial with the first input shaft. A third intermediate shaft is parallelly arranged with the first input shaft. A fourth intermediate shaft is arranged in the direction coaxial with the third intermediate shaft. A first gear on the first intermediate shaft is in engagement transmission with a second gear on the third intermediate shaft. A third gear on the second intermediate shaft is in engagement transmission with a fourth gear on the second intermediate shaft. A differential mechanism is provided with a fifth gear. The third gear is in engagement transmission with the fourth gear, and the fourth gear is in engagement transmission with the fifth gear at the same time. According to the transversely-arranged double-power-source vehicle driving assembly, on the one hand, the longitudinal size of the driving assembly is shortened, and the driving assembly is suitable for compact-structure vehicles, and on the other hand, the number of the used gears is small, so that the transmission structure is simplified.

The invention relates to a low-flow resistance rotor with self-cleaning function and heat transfer enhancement used in a heat transfer tube, which comprises a plurality of rotors, supporting frames and a connecting shaft line. The supporting frames are fixed at the two ends of the heat transfer tube. The two ends of the connecting shaft line are fixed on the supporting frames respectively. The plurality of rotors are skewered on the connecting shaft line between the two supporting frames. The rotor consists of a hollow shaft and fins, wherein the hollow shaft is provided thereon with one and more fin(s), each fin is oblique to the central line of the hollow shaft, the working surface of each fin is swirl or flat or a combination thereof, and the fins are fixed uniformly on the outer surface of the hollowing shaft. In the inventive technical proposal, a fluid inside a tube can drive the rotor by the fins to rotate at a proper speed, so as to inhibit and eliminate the deposition of dirt, the fins can disturb the fluid inside the tube to enhance the convection heat transfer, the rotor occupies a small area inside the heat transfer tube to increase the axial flow area and reduce the blockage rate and flow resistance in the heat transfer tube, and the service life of the rotor is significantly prolonged.

The invention discloses a tunnel diffusion draught fan, which comprises a tower, a worktable arranged on the top of the tower, a lower bearing disk arranged on the worktable, an upper bearing disk positioned on the lower bearing disk and a cabin arranged on the upper bearing disk, wherein the upper bearing disk is provided with a supporting bracket which is provided with a tunnel diffusion draught fluid channel with a round cross section; a diffuser is arranged in the tunnel diffusion draught fluid channel; a front diffusion and acceleration section three-dimensional channel, a three-dimensional fluid acting channel and a rear post-action air flow three-dimensional fluid channel, which are communicated in turn, are arranged in the diffuser; and the three-dimensional fluid acting channel is provided with at least two impellers along the axial direction of the fan, and a working machine positioned in the cabin is connected with the impellers through a transmission mechanism. The tunnel diffusion draught fan has high kinetic energy utilization rate and reduced cost and is convenient and safe in manufacturing, transportation, installation and maintenance.

A continuously variable fluent control valve for controlling supersonic flow of gas. The valve has an upper plate with a very slightly angled physical control surface and a lower plate with a physical nozzle inlet. As the valve opens and closes during supersonic flow, a hydrodynamic pintle forms in the nozzle inlet just below the physical control surface. The hydrodynamic pintle provides a fluid control surface for redirecting flow from horizontal fllow to vertical flow through the nozzle and, depending on the expansion needs of the supersonic flow, the hydrodynamic pintle changes shape, expanding or shrinking in the axial direction of the valve. Because of the nearly flat physical control surface of the upper plate, matieral ablation is significantly reduced. The fluid-fluid boundary between the hydrodynamic pintle and the supersonic flow produces a flow through the nozzle with little or no recirculation.

The invention discloses an electric vehicle compound braking energy recovery test stand. The electric vehicle compound braking energy recovery test stand comprises an electric braking module, a friction braking module, a wheel simulation module, a road simulation module, a signal processing module and a control module. Braking wheel cylinders and a flywheel are coaxially installed on a transmission shaft, one end of the transmission shaft is in transmission connection with an electric machine, the other end of the transmission shaft is connected with a torque and rotation speed sensor and a dynamic dynamometer, a dynamometer controller and an electric machine controller are electrically connected with a processing circuit, wheel cylinder pressure sensors are installed on the braking wheel cylinders, a friction brake energy accumulator pressure sensor is installed on a friction brake, a brake pedal displacement sensor is installed on a brake pedal, and the processing circuit is electrically connected with the control module. The electric vehicle compound braking energy recovery test stand has the advantages that braking energy recovery conditions can be simulated under various control strategies, testers can obtain the control strategy with maximum recovery kinetic energy through debugging conveniently, kinetic energy losses of a real vehicle are reduced in actual running, and the braking effect of the vehicle is improved.

Provided is a fluid switch valve. The fluid switch valve is composed of a handle, a bend, a valve pipe, a sealing opening, a sealing ring, a valve seat, a base, a bracket, a conical fixing cover, a valve external pipe, a bidirectional sealing ring and the like. The valve pipe can horizontally rotate and move up and down in the valve external pipe. The valve pipe is a part of a runner and also a part of the valve. On-off switch control over fluid is achieved through the sealing opening of the valve pipe and the sealing ring of the valve seat. When the handle is pressed down, the sealing ring enters the sealing opening, and thus the fluid is cut off. When the handle is pulled up, the sealing opening is disengaged from the sealing ring, and hence the fluid flows out through the valve pipe and the bend.

The related semi-conductor silicon field electronic emission material comprises: a 4-50nm hydrogenized amorphous silicon semi-conductor film deposited on substrate, and 1-10nm silicon grains distributed evenly. The preparation method comprises depositing, and quasi-molecular ultrashort pulse laser crystallizing. This product has low field-emission threshold and high field enhancing factor, and important to semi-conductor material application in large-area plane display.

The invention relates to a frustum slit type anti-blocking ladle bottom-blown powder injection device, and belongs to the technical field of steel refining. A frustum slit type powder injection component is filled with refractory material, and four frustum-shaped slits are symmetrically distributed in the refractory material. The frustum slit type anti-blocking ladle bottom-blown powder injectiondevice realizes high-efficiency, continuous and stable injection, has high injection rate and low pulsing probability, can obviously improve uniform powder air flow delivery rate in slits, and is stable in injection, low in abrasion of air bricks, safe and reliable.

The invention discloses an energy-saving premixing internal combustion type blast-furnace gas steel ladle baking device. The energy-saving premixing internal combustion type blast-furnace gas steel ladle baking device basically consists of a ladle cover, wherein a nozzle is installed at the center of the ladle cover, and a rocker arm and the ladle cover are connected through a positioning plate and bolts. The rocker arm, a suspension arm, a tie bar, a rotary shaft and a bearing seat form a rigid body and are connected through a steel wire rope, a winch, a fixed pulley and a pulley device. A rack is connected at the lower end of the bearing seat, and the lower end of the rack is fixed to an embedded part. Valve assemblies are sequentially installed in a pipeline system. All constitutional electrical elements, signal lines and power lines are connected to a control cabinet. The control cabinet is remotely controlled, data is transmitted to the intelligent control cabinet in a control chamber through a reticle for remote operation. The device is mechanically and electrically optimized in design, the safety performance is improved, a quick and convenient use function is achieved, the combustion efficiency is improved, and accordingly energy loss is reduced.

The invention relates to a propulsion device without a gear box for the vector control of a permanent magnet synchronous motor of an electric ship. Two power supplies are respectively electrically connected with an FOC (Field Oriented Control) vector control frequency converter through a propulsion operation platform and a cable; the FOC vector control frequency converter is electrically connected with a permanent magnet brushless synchronous motor through a cable; the permanent magnet brushless synchronous motor is coaxially connected with a rotary transformer and a propeller and mechanically connected with a speed indicating generator; the rotary transformer is electrically connected with the FOC vector control frequency converter through a cable; the speed indicating generator is electrically connected with the combined type propulsion operation platform through a cable; and the speed indicating generator and a storage battery are electrically connected with the FOC vector control frequency converter through cables. The invention directly drives the permanent magnet brushless synchronous motor by adopting the vector control without using the gear box and a brake, thereby optimizing the control characteristics of the electric ship and saving the electric energy.

The invention discloses a self-heat-generation heat-storage type oil conveying pipeline anti-freezing protection device and belongs to the technical field of pipeline anti-freezing. According to the self-heat-generation heat-storage type oil conveying pipeline anti-freezing protection device, firstly, an unsteady dual magnetic ring is made to generate initial rotation through magnetic force between main and secondary magnetic sheets and a balance guide magnet, meanwhile, in the rotating process of the unsteady dual magnetic ring, by means of migration movement generated by gravity balls underthe action of the gravity accelerated speed, the gravity center of the unsteady dual magnetic ring is changed, then magnetic balance between the main and secondary magnetic sheets and the balance guide magnet is broken, the unsteady dual magnetic ring is made to generate the rotation sequentially, a new time of magnetic force action is generated, repeating is performed like this, the unsteady dualmagnetic ring and a rotating barrel are made to be in the rotating process continuously, so that a static friction ring plate and a dynamic friction ring plate are made to perform friction continually to generate heat, and a function effect of spontaneous and continuous heat-generation and anti-freezing without external power on oil conveying pipelines is realized.

The invention discloses a machining device for a sheet cathode electrolyte direct injection machining a large-lead nut. The machining device comprises a hollow clamping rod, a cathode sheet and the nut; the cathode sheet is installed on the outer circumference of the lower end of the hollow clamping rod; the axis of the hollow clamping rod coincides with the axis of the nut, and the normal direction of the cathode sheet is the same as the tangent direction of a spiral rolling path of the nut; and a liquid spraying outlet communicating with a groove hole is formed in the lower end of the hollowclamping rod, and the electrolyte is directly injected from the liquid spraying outlet into a processing area between the cathode sheet and the nut in the direction parallel to the outer surface of the cathode sheet and along the outer surface of the cathode sheet. The invention further discloses a machining method. According to the machining device for the sheet cathode electrolyte direct injection machining the large-lead nut, the electrolyte is directly injected from the liquid spraying outlet of the hollow clamping rod into the processing area between the cathode sheet and the nut in thedirection parallel to the outer surface of the cathode sheet and along the outer surface of the cathode sheet, the movement journey of the electrolyte is greatly shortened, the loss of kinetic energyis reduced, the electrolyte products in the processing area can be better washed out and taken away, and the work efficiency is improved.