21results about How to "Consistent flow rate" patented technology

The utility model discloses a vertical radial flow regenerator which comprises a vertically arranged shell, a concentric cylinder is arranged in the shell in a hanging mode, the concentric cylinder and the shell are concentrically arranged, and the concentric cylinder comprises two cylinders which are spaced by a certain distance. The concentric cylinder divides the inner space of the shell into a sub-runner, a filling layer and a collecting channel which are sequentially arranged from outside to inside along the radial direction of the shell, and a buffer cavity communicated with the sub-runner is formed between the bottom of the concentric cylinder and the bottom of the shell; the filling layer is respectively and radially communicated with the branch flow channel and the collecting flow channel; the filling layer is filled with an energy storage medium for forming a bed layer and is provided with a packing seal which is positioned at the top of the energy storage medium and is used for preventing airflow short circuit after the energy storage medium settles; and a flow guide cone of which the diameter is gradually reduced along the axial direction is arranged in the branch flow channel or the flow collecting channel. According to the utility model, the bed resistance is smaller, the airflow distribution is more uniform, the space effective utilization rate and the energy storage performance are improved, and the large-scale development of the regenerator is facilitated.

The utility model provides a distributor and belongs to the technical field of distributors. The distributor solves the problem that the distribution of fluid flowing out of an existing distributor is not uniform enough. The distributor comprises a first gas inlet pipe, a second gas inlet pipe and a plurality of gas outlet pipes, all the gas outlet pipes are parallel to one another and are arranged at equal intervals, the gas outlet end of the first gas inlet pipe is communicated with the middle of the second gas inlet pipe in the length direction, and the second gas inlet pipe is communicated with the middle of all the gas outlet pipes in the length direction. A plurality of air outlet needle tubes are arranged on each air outlet pipe at equal intervals, all the air outlet needle tubes are arranged in a criss-cross linear grid shape, and the distances between the air outlet needle tubes and the adjacent air outlet needle tubes in the longitudinal direction and the transverse direction are the same. The distributor has the advantage that fluid flowing out of the distributor is uniformly distributed.

The invention discloses a two-phase flow relative permeability curve boundary processing method and system based on a lattice Boltzmann method, and the method comprises the steps: calculating the average density of an inlet boundary fluid, calculating the pressure difference between an inlet and an outlet, and then calculating the volume force; solving the velocity and density of the fluid by using a lattice Boltzmann method; correcting the volume force according to the fluid velocity to ensure that the inlet flow velocity is consistent with a set value; and updating the velocity distribution of the fluid according to the corrected volume force and fluid density so as to optimize and perfect the simulation of the steady-state relative permeability curve. The method has the advantages that by converting the speed-pressure boundary condition into the periodic boundary condition in the volume force format, the change of the boundary pressure and the injection flow velocity can be accurately simulated when the relative permeability curve is obtained through the steady-state method, and the inlet flow velocity is kept constant, so that the calculation precision of the relative permeability curve is improved.

The utility model discloses a uniform flow field hard alloy anodic oxidation device which comprises a tank body and oxidation anodes, the oxidation anodes are installed on two side plates of a tank chamber of the tank body, a liquid homogenizing cavity pore plate and a backflow cavity pore plate are fixedly installed at the front end and the rear end of the tank chamber of the tank body respectively, and an adjusting pore plate is adjustably installed on the liquid homogenizing cavity pore plate; the liquid uniformizing cavity pore plate and the end plate at the corresponding end of the tank body define a stirring and liquid uniformizing cavity, and a stirrer is arranged in a cavity body of the stirring and liquid uniformizing cavity; a backflow cavity is defined by the backflow cavity pore plate and an end plate at the corresponding end of the tank body, and the backflow cavity leads to the stirring and liquid homogenizing cavity through a circulating pipeline; and a movable anode scraping plate is arranged on the oxidation anode. The liquid uniformizing holes in the liquid uniformizing cavity pore plate correspond to the liquid uniformizing adjusting holes in the adjusting pore plate in a one-to-one mode, and the adjusting pore plate is adjustably installed on the liquid uniformizing cavity pore plate through pore plate adjusting bolts. The device can form a stable liquid flow field in the tank, ensures uniform distribution of metal ions, and is particularly suitable for precise anodic oxidation treatment of hard alloy.

The utility model discloses a five-pointed star type high-temperature-resistant hydrogen sulfide-resistant screw pump sealing impact device, the main body structure of the five-pointed star type high-temperature-resistant hydrogen sulfide-resistant screw pump sealing impact device is a lower sealing occlusion ring and an upper sealing occlusion ring which are occluded up and down, and the five-pointed star type high-temperature-resistant hydrogen sulfide-resistant screw pump sealing impact device comprises the lower sealing occlusion ring and the upper sealing occlusion ring, a pentagram-shaped occlusion groove is formed in the bottom surface of the upper sealing occlusion ring, the pentagram-shaped occlusion groove and the pentagram-shaped occlusion convex teeth are mutually occluded and clamped, and newly synthesized difluoro vulcanized phenyl silicone rubber is adopted as a main body material. Through the arrangement of the lower sealing occlusion ring and the upper sealing occlusion ring, close fit of the lower sealing occlusion ring and the upper sealing occlusion ring can be achieved, the occlusion surface is of a five-pointed star-shaped three-dimensional structure distributed in the radial direction, the structure has good impact resistance and scouring resistance, the overall structure is simple in process, installation is convenient, the service life is long, and the service life is long. The stable sealing performance of the sealing device in a high-temperature and hydrogen sulfide environment is ensured, and medium leakage is prevented.

This application relates to a heat exchanger and a thermal management system. The heat exchanger includes a flow guide plate with first flow guide grooves. Adjacent first flow guide grooves form multiple flow splitting gaps. The first flow guide groove is formed by either a straight groove segment or a curved groove segment alone, or by alternating arrangements of both. The straight groove segment includes multiple staggered channels connected sequentially along its own centerline, with adjacent staggered channels arranged in a direction perpendicular to the centerline of the straight groove segment. The flow guide plate also has multiple second flow guide grooves and flow guide protrusions. The flow guide protrusions divide the area of ​​the cold flow channel layer between the first and second flow guide grooves into multiple flow guide channels. The flow area of ​​the flow guide channels, the flow area of ​​the first flow guide groove, and the flow area of ​​the second flow guide groove are all equal. The heat exchanger and thermal management system provided by this application solve the problem of thermal stress concentration in the heat exchanger caused by inconsistent heat exchange effects at different locations in the cold flow channel layer.

The utility model relates to the technical field of flue gas treatment, in particular to an SCR (Selective Catalytic Reduction) denitration reactor, an SCR denitration device and an SCR denitration system.The SCR denitration reactor comprises a reactor body, a gas inlet is formed in one side wall of the top end of the reactor body, and a gas outlet is formed in the bottom end of the reactor body; the first catalyst layer is arranged in the reactor body and is close to the air inlet, the first catalyst layer in the SCR denitration reactor is of a differentiated structure, the number of through holes of the catalyst unit located on the edge is large, the aperture of the through holes is small, the number of through holes of the catalyst unit located in the reactor body is small, and the aperture of the through holes of the catalyst unit located in the reactor body is large. The flow velocity of flue gas at the edge can be slowed down, the flow velocity of the flue gas flowing through the first catalyst layer is relatively consistent, too high or insufficient local ammonia nitrogen ratio is avoided, the denitration reaction effect is improved, ammonia escape is reduced, an additional structure does not need to be additionally arranged, and the equipment operation and maintenance cost is low.

A super-large screen changing device for filtering and mixing, characterized in that it comprises an outer shell composed of an inlet plate, an outlet plate and pads clamped between the upper and lower ends of the inlet plate and the outlet plate, a slide plate type filter unit installed in a slideway composed of the outlet plate, the inlet plate and the upper and lower pads, a power mechanism for driving the slide plate type filter unit to reciprocate along the slideway is connected to one side of the slide plate type filter unit through a connecting block; the slide plate type filter unit is provided with a material channel and an integrated porous plate, and a filter screen is provided on the feed side of the integrated porous plate; a petal-type dynamic sealing disk with a hollow structure in the middle part and a sealing auxiliary spring are provided between the mating surfaces of the inlet plate and the slide plate type filter unit, and the feed port and the mixing channel of the inlet plate are of a honeycomb structure; a petal-type static sealing disk with a hollow structure in the middle part is provided between the mating surfaces of the outlet plate and the slide plate type filter unit, and the discharge port and the mixing channel of the inlet plate are of a honeycomb structure.

According to the flue flow characteristic design method and device, the electronic equipment and the storage medium provided by the invention, the first parameter of the first flue in the flue system is acquired, and the flow characteristic check processing is performed according to the first parameter to obtain the first check information; hydrodynamic parameters are obtained, hydrodynamic checking processing is carried out according to the hydrodynamic parameters, and second checking information is obtained; obtaining first flue flow field information, and performing flue flow field checking processing according to the first flue flow field information to obtain third checking information; and performing flue flow characteristic design processing according to the first checking information, the second checking information and the third checking information to obtain a target flue flow characteristic. According to the embodiment of the invention, flow characteristic checking, hydrodynamic force checking and checking of flue gas flow field change caused by flue gas extraction are carried out to obtain respective corresponding checking information, and design processing of flue flow characteristics is carried out according to various checking information, so that uniform temperature distribution and consistent flow velocity of a medium in a heating surface of a flue system can be ensured.

The utility model provides a rod body structure for a negative pressure adsorption type hair curling appliance, which is characterized by comprising a rod body main piece, a circle of air guide grids are sequentially arranged on the outer side of the rod body main piece, a cover plate is correspondingly arranged on the outer side of the air guide grids, and the cover plate is arranged on the outer side of the rod body main piece. A plurality of first air ducts which are arranged in parallel in the same direction are arranged on the edge of one side of the air guide grille, a section for forming a negative pressure area is arranged on the side, close to the first air ducts, of the cover plate, second air ducts corresponding to the first air ducts are arranged at the bottom end of the section, and the first air ducts and the second air ducts are in one-to-one correspondence, and the edges of the first air ducts and the second air ducts are attached to form air outlet channels; according to the utility model, the hair can be automatically wound on the cover plate according to the principle of negative pressure adsorption, the hair can be wound on the cover plate only by being close to the hair when being used, the operation is simple and convenient, the problem that the hair is easy to block in the winding process is solved, the hot air setting temperature does not need to be too high, scalding can be avoided, and meanwhile, the damage of high-temperature setting to the hair is greatly reduced.

The present invention relates to the technical field of gas calorific value, and specifically to a natural gas gas calorific value regulation system, method and device. The present invention realizes one-step calculation of natural gas calorific value regulation by real-time monitoring of state parameters in the natural gas pipeline transportation process. At the same time, the pressure and temperature in the transmission process are fully considered to correct the calculation of the natural gas calorific value regulation process, so as to ensure that the natural gas calorific value regulation is fast and accurate. In addition, the present invention provides dynamic regulation of the gas calorific value. When the working conditions change, the system of the present invention can also automatically adjust to the target calorific value state, so as to realize the stability of the calorific value of the natural gas pipeline transportation.

The invention discloses a quick response temperature sensor time constant testing device and a use method thereof, and relates to the technical field of temperature sensor testing. The testing device comprises a water circulation system, a valve system, a temperature sensor, a flow meter and an upper computer. An outlet of the first constant-temperature water tank communicates with an inlet of the measuring pipeline through a first branch, and an outlet of the second constant-temperature water tank communicates with the inlet of the measuring pipeline through a second branch. An outlet of the measuring pipeline is communicated with an inlet of the first constant-temperature water tank through a third branch and communicated with an inlet of the second constant-temperature water tank through a fourth branch. And the speed regulating pump is arranged on the measuring pipeline. The valve system controls water circulation of the first constant-temperature water tank and water circulation of the second constant-temperature water tank, the temperature sensor measures the water temperature in the measuring pipeline, the flow meter displays the flow in the measuring pipeline, and the upper computer records measuring data of the temperature sensor. Compared with the prior art, the test precision and repeatability can be improved, and the test requirement of the temperature sensor with the small time constant can be met.

The utility model relates to the technical field of lithium battery heat exchange, and discloses a lithium battery cooling heat exchanger which comprises a shell and a top cover, a flow guide structure used for guiding two media is arranged in a cavity of the shell, the flow guide structure comprises a heat exchange block, a first circulation groove and a second circulation groove, and the heat exchange block is fixedly connected with the shell. A plurality of first circulation grooves are formed in the left side wall face and the right side wall face of the heat exchange block, a plurality of second circulation grooves distributed with the first circulation grooves alternately are formed in the front wall face and the rear wall face of the heat exchange block, and the first circulation grooves and the second circulation grooves are distributed in a crossed mode so that two media can form crossed flowing tracks when penetrating through the heat exchange block. The multiple first circulating grooves and the multiple second circulating grooves can disperse flowing media to form multiple bunchy jet flows, the contact area of the two media is larger, the flowing resistance of the media is small, the flowing speeds of the two media tend to be consistent, then the heat exchange effect and efficiency can be guaranteed, the flowing stability of the media can be guaranteed, and turbulent flow is not likely to be formed.

This invention provides a power component and a three-level energy storage inverter, belonging to the field of energy storage inverter technology, including a liquid-cooled heat sink and IGBT units. The liquid-cooled heat sink has internal cooling channels and an external cooling surface; the cooling channels include a connected inlet channel and an outlet channel; the extension paths of the inlet channel and the outlet channel are parallel, and the coolant flows in opposite directions; the direction of the line connecting the beginning and end of the inlet channel is defined as a first direction; the IGBT unit includes multiple IGBTs spaced apart along the first direction; the IGBT units are attached to the cooling surface; in the first direction, both the inlet and outlet channels cover multiple IGBTs. This invention smooths out the differences in heat dissipation capacity at different locations on the cooling surface, ensuring all IGBTs are in an equivalent cold source environment, reducing temperature differences between different IGBTs, and effectively avoiding hotspot phenomena.

The invention provides a silo flow changing device. The problem that the flow changing performance of a circular truncated cone type flow changing device cannot be adjusted is solved. The silo comprises a silo body, the lower end of the silo body is of a conical barrel structure with the diameter gradually reduced downwards, and a discharging opening for communicating the inside and the outside is formed in the bottom of the silo body; a hollow interlayer which extends in the vertical direction and is communicated end to end in the horizontal direction is arranged in the side wall of the silo, and a plurality of ventilation holes communicated with the hollow interlayer are formed in the outer side wall of the silo; a plurality of fans are arranged on the outer side wall of the silo, the fans are in control connection with the controller, and an air outlet of each fan communicates with the end, away from the hollow interlayer, of the corresponding ventilation hole; a distribution pipe communicated with the ventilation holes is fixedly arranged in the hollow interlayer; the bottom of the distribution pipe is provided with a plurality of first air supply pipes which are arranged at intervals in the circumferential direction of the distribution pipe and extend towards the lower portion of the distribution pipe, the first air supply pipes are connected with second air supply pipes, and the ends, away from the first air supply pipes, of the second air supply pipes penetrate into the silo and are connected with the air inlet end of the pneumatic flow changing device.

The present invention relates to a novel variable-section pipeline ventilation system at the bottom of a granary, comprising a ventilation structure component, a partition net and an air supply pipeline device; the ventilation structure component is located in the middle area between the partition net and the ground, and realizes the processing of the incoming air, and the wind is uniformly passed into the grain pile; the partition net is located between the ventilation structure component and the grain pile to isolate the upper grain pile from the lower ventilation system; the air supply pipeline device is connected to the ventilation structure component to provide incoming air for the ventilation structure component. Compared with the prior art, the novel variable-section pipeline ventilation system at the bottom of a granary of the present invention effectively enhances the intensity of airflow exchange, and the ventilation scheme selection is more flexible; the pipeline fault area and fault type can be accurately judged through the monitoring data of the air pressure sensor; the air supply of the ventilation duct can be fully intelligently controlled through the remote and precise control of the electric valve, and the electrification and intelligence level of the ventilation system can be improved.

The invention relates to a nanofiber wet forming radial pulp distribution device which comprises a barrel, a plurality of branch pipes and a flow dividing piece, the flow dividing piece comprises a cylindrical flow dividing part and a conical flow dividing part, the cylindrical flow dividing part and the barrel are coaxially arranged, the conical flow dividing part is connected to the bottom end of the cylindrical flow dividing part, and an interlayer space is formed between the outer wall faces of the conical flow dividing part and the cylindrical flow dividing part and the inner wall face of the barrel. According to the designed radial slurry distribution device for nanofiber wet forming, through the design that the cylinder structure is combined with the cylindrical flow dividing part, the conical flow dividing part and the branch pipes with the equal diameter and the equal length, the fluid dynamic characteristic of slurry is remarkably optimized, and even under the conditions that the diameter of the cylinder is small, the number of the branch pipes is small and the distance between every two adjacent branch pipes is large, the slurry can be distributed evenly. And the slurry can stably and uniformly flow in the interlayer space, so that the problems of flocculation, deposition, non-uniform slurry distribution and the like of the slurry caused by too low flow speed and non-uniform distribution of the slurry in the traditional radial slurry distributor are solved, and the slurry distribution uniformity of the low-weight nanofiber slurry and the stability of the product quality are improved.

The application discloses an air-laid machine for uniform netting, comprising a frame for providing a supporting installation reference; a cotton feeding unit arranged at one end of the frame for continuously outputting fiber raw materials; and a conveying netting unit arranged at the other end of the frame for providing a bearing surface for fiber netting and conveying a formed fiber net. The application divides the flow guide channel into an upper flow section, a middle flow section and a lower flow section, and sets a fiber guide component in the middle flow section to form a multi-stage continuous fiber guide channel. When the mixed fiber raw materials flow along the flow guide channel, the fiber guide channel can first guide and converge part of the layered fiber raw materials, and then perform secondary deviation correction on the outflow part of the layered fiber raw materials, so that full coverage and continuous guidance mixing of the layered fiber raw materials are realized. Meanwhile, the staggered interval type channel structure of the fiber guide channel will not block the airflow, can effectively avoid the retention, wall-hanging accumulation and channel blockage of the fiber raw materials, and continuously ensures the uniform and stable flow of the fiber airflow.

The utility model provides a material conveying machine for quick-frozen food packaging, and relates to the technical field of quick-frozen food processing, the material conveying machine comprises a box body, and drainage assemblies are fixedly connected to the two sides of the interior of the box body; a conveying assembly; the conveying assembly comprises conveying rolling shafts rotationally connected to the two sides of the inner wall of the box body, the outer sides of the conveying rolling shafts are sleeved with a conveying belt, and cold air through holes are formed in the conveying belt; by means of the design, cooled airflow can be conveyed to the bottom of the food bag, cold air can evenly flow to the bottom of the food bag through the design of the conical air outlet, and the situation that due to the fact that the lower portion of a traditional conveying belt makes contact with the food bag, cooling is uneven or the cooling effect of partial areas is poor is avoided; and secondly, due to centralized guiding of air flow and adjustment of a flow guide plate driven by an air cylinder, the food bags can be stably conveyed on the conveying belt, meanwhile, it can be ensured that cold air is effectively centralized in an area needing to be cooled under guiding of an air suction fan, and the quick-freezing effect is remarkably improved.

The invention discloses a mixed dinitrobenzene production waste acid separation device which comprises a purification tower, a filler is arranged in the purification tower, and an acid inlet pipe for injecting waste acid liquid, a benzene inlet pipe for injecting benzene liquid and a benzene storage tank are arranged at the positions, located at the top and the bottom of the filler, of the purification tower respectively. The benzene storage tank is positioned at the top of the purification tower and continuously supplies benzene liquid to the purification tower by utilizing a high level difference. A purification tower with filler is additionally arranged, benzene serves as a continuous phase, waste acid serves as a dispersed phase and enters the purification tower, the density difference between the waste acid solution and the benzene solution is utilized, the waste acid solution is dispersed on the tower top and flows downwards, the benzene solution continuously enters the bottom of the purification tower by means of the high level difference and flows upwards, counter-current extraction is formed by the waste acid solution and the benzene solution, and nitrates in the waste acid are removed. Therefore, the content of nitrates in the waste acid is reduced from 0.6%-0.8% before separation to 0.1% or below after separation, the nitrates are prevented from flowing into a tail gas absorption tower to pollute alkaline water in the tail gas absorption tower, and the subsequent treatment difficulty is reduced.