579results about How to "Uniform flow rate" patented technology

A semiconductor device includes an insulating substrate, semiconductor elements and a cooling device. The cooling device includes a heat radiation substrate, fins, and a cooling case of a box-like shape that accommodates the fins and has a bottom wall and side walls. An introducing port and a discharge port for a cooling liquid are provided diagonally in a pair of side walls provided along the longitudinal direction of the assembly of the fins, among the side walls of the cooling case. A diffusion wall facing the introducing port is provided inside the cooling case.

The invention discloses a method for preparing a high-performance polymer pipe. The method adopts the steps that during the extrusion molding process of the pipe, the crystallization, the orientation or the dispersed phase morphological structure of the polymer pipe can be adjusted, controlled and fixed through the shearing action generated by the rotation of a core rod in a machine head relative to an orifice die, or the rotation of the orifice die in the machine head relative to the core rod, or the rotation of the core rod and the orifice die in the identical or opposite direction simultaneously, and by cooling and shaping the inner wall and the outer wall of the extruded pipe simultaneously, and adjusting and controlling the temperature field, the cooling rate and the temperature gradient during the extrusion molding process of the pipe. The invention further discloses a device designed according to the method. The method has the advantages that the macromolecular orientation, the crystallization or the dispersed phase morphological structure which are generated through induction can be retained in the plastic pipe, so that deorientation can be avoided, the internal stress of the pipe can be reduced, and the performance of the pipe is improved.

Disclosed herein is a middle- or large-sized battery pack including a plurality of unit cells electrically connected with each other, wherein the battery pack is constructed in a structure in which a heat transfer medium flows through gaps defined between the unit cells for controlling the overall temperature of the battery pack to be within a predetermined temperature range for the optimum operation of the battery pack, and each unit cell is provided at the outer surface thereof, at which the heat transfer medium is brought into contact with each unit cell, with a layer containing a phase transformation material (‘phase transformation layer’) for minimizing individual temperature difference between the unit cells. The present invention has the effect of controlling the overall temperature of the battery pack and individual controlling the temperatures of unit cells constituting the battery pack. Also, the present invention has the effect of restraining the abrupt change in temperature of the unit cells, when the battery pack is not in operation or when the external environment abruptly changes, thereby preventing the degradation of the unit cells. Furthermore, the present invention has the effect of minimizing damage to the unit cells due to foreign matter when the foreign matter is brought into contact with the unit cells. In addition, the present invention has the effect of reducing the overall temperature difference of the battery pack and manufacturing a middle- or large-sized battery pack having a compact structure.

The invention provides an engine cooling water jacket which has the advantages of simple structure, small volume, uniform flow rate and low pressure loss. The engine cooling water jacket comprises a cylinder body water jacket and a cylinder cover water jacket, wherein the cylinder body water jacket is separated by two baffle plates to form a first flow channel and a second flow channel, and the first flow channel and the second flow channel are communicated with the cylinder cover water jacket through water holes in a cylinder gasket; and coolant mainly flows into the first flow channel from a water inlet and flows through an air exhaust side, then flows into the cylinder cover water jacket through the water holes at one side of the cylinder gasket, subsequently flows into the second flow channel through the water holes at the other side of the cylinder gasket and flows through an air admission side, and finally flows out from a water outlet. Thus, the invention enables the flow rate of the coolant in the whole engine cooling water jacket to be more uniform, reduces the thermal-state deformation of the cylinder holes and improves the dynamic performance of the engine; and the water holes in the cylinder gasket can be arranged as required without being influenced by the design of traditional water jacket cylinder holes, thereby integrally increasing the flow areas of the water holes in the cylinder gasket, reducing the pressure loss of the whole water jacket and lowering the performance requirements for water pumps.

The invention discloses a motor adhesive injecting device and an operating mode thereof. The device comprises a shooting cylinder which is provided with an outlet at the bottom, a pressure ram arranged inside the shooting cylinder, a drive screw connected with the upper part of the pressure ram, a fixing screw used together with the drive screw and a drive motor arranged on top of the drive screw. The rotation of a motor drives the screw to make the spiral movement inside the nut and drives a piston to have the axial displacement to act on the liquid. The operating mode is that the rotating axle of the motor is controlled to continuously rotate, discontinuously rotate, impulse rotate or reverse the axle to drive the piston to move up and down or vibrate correspondingly to the cylinder. With excellent response, the motor can control the injection rate accurately by the controlling the rotating angle. The motor can satisfy the requirements for accurate and rapid adhesive injecting for the constant running speed and uniform flowing speed of the liquid.

A bottle top regulator/aerator for controlling the flow from a bottle having a narrow cylindrical opening through which wine or similar liquid may be poured. The dispensing apparatus includes, in combination, an air inductor, a regulating cartridge having a percolation labyrinth, and an anti-drip trough integrated within a housing. The application of this apparatus provides for both the rapid aeration of the wine, as well as a uniform flow rate absent the hazard of post-pouring droplets.

The invention relates to a system and a method for improving the uniformity of a selective catalytic reduction (SCR) flow field. The system comprises a flue, a plurality of circular arc-shaped primary guide plates, a plurality of circular arc-shaped secondary guide plates, an ammonia injection grid, N tertiary guide plates, a plurality of catalyst layers, and M sets of differential pressure measurement components which are horizontally arranged along the width direction of the flue and are positioned between the catalyst layers and the tertiary guide plates, wherein each set of differential pressure measurement component is evenly provided with N differential pressure detection devices arranged at intervals along the depth direction of the flue. The system and the method can improve the flue gas flow field in front of the catalyst layers, guarantees the speed uniformity of an SCR system, and effectively reduces the phenomenon that the catalyst layers are blocked or worn.

An electric rotary machine has a motor frame having a cooling fluid passage, a rotary shaft rotatably supported by the motor frame, a rotor fixed to the rotary shaft, and a stator. The stator has a core having a ring shape and a stator winding wound around the core. The stator core is arranged to face an outer periphery of the rotor in a radial direction. An inlet section and an outlet section are formed in the motor frame. Cooling fluid is introduced into the cooling fluid passage through the inlet section and discharged from the outlet section. A partition wall section is formed on the motor frame and divides the cooling fluid passage into a cooling fluid inlet passage and a cooling fluid outlet passage. Through an opening formed in the partition wall section, the cooling fluid inlet passage and the cooling fluid outlet passage communicate with each other.

The invention relates to an anhydrous stemming for a blast furnace. The anhydrous stemming is prepared from the following raw materials in percentages by weight: 30-40 percent of high-alumina bauxite, 10-15 percent of high-purity silicon carbide, 20-25 percent of soft clay, 10-25 percent of carbonaceous material, 5-15 percent of submicron powder, 15-25 percent of binding agent, and additionally silicon metal powder addictives accounting for 1-3 percent of the total weight of the raw materials. The anhydrous stemming has the advantages of favorable high-temperature fire performance, linearity change ratio of lower than 0.3 percent under the condition of 1400 DEG C*2h, breaking strength of more than or equal to 10MPa, high intensity, slag-iron resistant scouring, easy sintering, excellent work performance, less pollution and low production cost, and is beneficial to environment protection as well as popularization and application.

The invention discloses a multi-stage denoiser and a valve with the same. The multi-stage denoiser comprises a hollow denoising cylinder and at least two stages of denoising covers. The denoising covers are arranged in the hollow denoising cylinder in the extension direction of the hollow denoising cylinder. Each stage of denoising cover is provided with a fluid cavity and a fluid inlet formed in the head portion of the fluid cavity. The wall of the fluid cavity of each stage of denoising cover is provided with a plurality of through holes. The fluid inlet of the fluid cavity of the rear stage of denoising cover corresponds to the tail portion of the front stage of denoising cover and forms a buffer cavity together with the tail portion of the front stage of denoising cover. The valve comprises a valve body and an outflow passageway of fluid. The outlet of the outflow passageway is fixedly connected with the denoiser in the axial direction. By arranging the multiple stages of denoising covers, the denoising efficiency is improved, the denoising effect is achieved through the frequency shift effect of small hole spraying, and the fluid flow speed is uniform through the buffer cavity. The vibration caused by fluid impact to the denoiser is reduced in the medium flowing process, and therefore the stability of the product is improved, and the overall service life of the denoiser is prolonged.

The invention relates to a cooling device which comprises a pressure cavity cover piece, a perforation plate and a microchannel matrix plate in sequential sealed connection through waterproof silica gel. A first liquid collection cavity and a second liquid collection cavity are symmetrically formed on one side, connected with the perforation plate, of the microchannel matrix plate and communicated through a plurality of microchannels, and one side, connected with the pressure cavity cover piece, of the perforation plate inwards concaves to form a cavity which is sealed through the pressure cavity cover piece to form a pressure cavity; multiple perforation holes communicated with the microchannels penetrate the bottom of the pressure cavity, the perforation plate is provided with a first liquid outlet and a second liquid outlet on two sides of the cavity, and a liquid inlet communicated with the pressure cavity is formed in the middle of the pressure cavity cover piece. Cooling is realized by means of combining jet flow impact with the microchannels, so that the characteristic that the microchannels are large in heat exchange area can be utilized, the characteristic that jet flow impact is high in local heat exchange efficiency can be utilized, the problem of nonuniform cooling is solved, and heat exchange efficiency of the whole device is improved.

The invention discloses an exhaust muffler capable of automatically adjusting the overflow area, which comprises an air inlet pipe, an expansion chamber and an air outlet pipe, wherein the inner circle of the section (provided with radial through-holes) of the air inlet pipe is provided with a piston which can slide to and fro along the inner wall of the pipe, and the front end of the piston faces the air inlet direction, while the rear end is provided with a pressure spring which can apply pressure (with a direction opposite to the air inlet direction) to the rear end. The invention adopts a structure that the exhaust pipe section of the air inlet pipe is provided with the piston which divides the exhaust pipe section into an exhaust part and a closed part, the position of the piston can be automatically adjusted according to the exhaust pressure and the piston can reset under the action of the spring when the exhaust pressure is low; therefore, the exhaust muffler has the advantages of adjusting the area of the airflow ventilating section according to the exhaust gas flow of an engine under different working conditions, keeping the exhaust airflow in an even flow velocity, effectively lowering the exhaust backpressure, reducing the regenerated noise of the airflow, improving the erasure effect of the muffler, and having a positive significance for reducing the fuel consumption and carbon dioxide emission of an automobile.

The invention relates to a water jacket structure of a diesel cylinder block. The upper portion of an intake side of the cylinder block is provided with a water distributing channel, the front end of which is connected with a water pump and the rear end of which is provided with an engine oil cooler cavity; a cylinder block water jacket is formed at the middle/upper portion of the cylinder block and comprises at least two transversely parallel single water jacket bodies, each of which is provided with an water intake hole and a water drainage hole, the water distributing channel is communicated with the interior of each of the single water jacket bodies through the water intake holes; the water intake hole on the first single water jacket body at the front end of the cylinder block water jacket comprises a front straight water intake hole and a rear straight water intake hole, the water intake holes on other single water jacket bodies each comprise a rear straight water intake hole, wherein all the single water jacket bodies are each provided with an oblique water intake hole except the first single water jacket body, the front straight water intake hole, the rear straight water intake hole and the oblique water intake hole are all tangential to the periphery of the single water jacket bodies. The water jacket structure, skillful and reasonable in structure, can effectively cool the cylinder block and the engine oil, increase the rigidity of the intake side of the cylinder block and lower noise.

The invention discloses a desulfurization system comprising a tower body, wherein a smoke inlet is arranged in the middle of the tower body; a pure smoke outlet is arranged at the top of the tower body; a slurry pool for containing slurry is formed on the lower part of the tower body; the slurry pool is provided with a mixed liquid outlet; a slurry spraying layer, a rising air gap and a clean water spraying layer are sequentially arranged from the smoke inlet to the pure smoke outlet from bottom to top; the bottom of the slurry pool is respectively connected with an oxidization mechanism and an ammonia supplying mechanism; and the desulfurization system further comprises a slurry circulating mechanism and a clean water circulating mechanism. The invention further provides a desulfurization process; and the process is low in water consumption amount so that the amount of saturated steam in pure smoke is reduced by 30-40% and consumption of external clean water is reduced. According to the desulfurization system and the desulfurization process disclosed by the invention, the operation cost is low; and the consumption of the steam is 20% of that of an ammonia-fertilizer method process and the consumption of power is 40% of that of the ammonia-fertilizer method process. The escaping rate of ammonia is low; the content of the ammonia in the pure smoke is less than 8mg/Nm<3>; no three wastes are discharged; and secondary pollution to an environment is not caused.