7results about How to "Velocity increases" patented technology

The invention provides an array type micro-premixing combustor. The array type micro-premixing combustor comprises a premixing assembly, a gas supply part and a combustion chamber assembly. The premixing assembly comprises a shell and a premixing pipe array, the premixing pipe array comprises a first mounting plate, a partition plate and at least one fuel premixing pipe with one end open, the first mounting plate and the partition plate are connected with the fuel premixing pipe, and the partition plate is located in the middle of the fuel premixing pipe. At least one fuel gas inlet communicated with the fuel cavity is formed in the gas supply part; the combustion chamber assembly is connected with the premixing assembly, the combustion chamber assembly and at least one part of the premixing assembly jointly define a combustion cavity with an opening in one end, and an opening of the fuel premixing pipe communicates with the combustion chamber. According to the array type micro-premixing combustor, the tempering phenomenon during combustion of hydrogen-rich / pure hydrogen fuel can be effectively prevented, the working stability of the micro-premixing combustor is improved, meanwhile, the hydrogen / air mixing uniformity of a nozzle of the micro-premixing combustor is improved, NOx emission is effectively reduced, and the safety and low emission of combustion of the hydrogen-rich / pure hydrogen fuel are improved.

The present invention relates to a method for modulating neuropathies. The method comprises: administering to a subject a therapeutically effective amount of doxazosin, a pharmaceutically acceptable salt or an acceptable form thereof, a therapeutically effective amount of pramipexole, a pharmaceutically acceptable salt or an acceptable form thereof, and a therapeutically effective amount of metoprolol, a pharmaceutically acceptable salt or an acceptable form thereof.

The utility model provides a culture liquid tank structure of a closed culture work ship, which is characterized in that the four corners of a culture liquid tank are provided with break angles, so that the orthographic projection of the culture liquid tank on a horizontal plane forms an octagonal structure, four long sides are distributed in a rectangular shape, the distance between the two opposite long sides is B, the length of the other four short sides formed by the break angles is a, 0.25 < = a / B < = 0.4; a water inlet pipe is arranged in the culture liquid cabin, and a water outlet is formed in the bottom of the culture liquid cabin; the bottom of the culture liquid cabin is horizontal. The average flow velocity and the effective utilization rate of energy in the culture liquid cabin are greatly improved; the flow field form is changed into a flow state with uniform flow velocity and no low-flow-velocity dead angle from a non-uniform flow velocity and obvious low-flow-velocity dead angle area; vortex in the pool is stable, obvious vortex columns are arranged in a middle water outlet area, and vortex rings on the pool wall have huge energy. The culture liquid tank structure is good in fish adaptability, high in self-cleaning capacity, high in effective energy utilization rate and capable of effectively utilizing culture space.

The invention relates to the technical field of fabric dip-dyeing processes, and discloses a dip-dyeing device for a coreopsis tinctoria extract garment fabric and a use method of the dip-dyeing device, and the device comprises a dip-dyeing tank, a first drafting mechanism, a second drafting mechanism and a dip-dyeing structure. The dip dyeing structure is arranged between the first drafting mechanism and the second drafting mechanism and comprises a frame body and transmission roller assemblies, the frame body is arranged on the inner wall of the dip dyeing tank through a lifting mechanism, the lifting mechanism is suitable for driving the frame body to reciprocate in the height direction, and the multiple sets of transmission roller assemblies are arranged on the frame body at intervals in the horizontal direction. The stirring structure is arranged on the bottom wall in the dip dyeing tank and comprises a stirring rod and a stirring blade coaxially arranged at one end of the stirring rod. The dip-dyeing structure drives the fabric body immersed in the dip-dyeing liquid in the dip-dyeing tank to reciprocate in the height direction, the efficiency of soaking the fabric body by the dip-dyeing liquid is improved, meanwhile, the stirring structure continuously stirs the dip-dyeing liquid, and it is guaranteed that the concentration of the dip-dyeing liquid is uniform.

Disclosed are a control method for a combustion system, the combustion system, and an engine. The control method for the combustion system comprises: a fuel injector (10) conducts first primary spray and second primary spray at intervals, and the fuel injector injects fuel to a first arc ridge (3) during the first primary spray; and the fuel injector sprays fuel to a second arc ridge (6) during the second primary spray. By adopting a combustion chamber having two arc ridges and respectively injecting fuel to the two arc ridges by means of the fuel injector, it can be ensured that the amount of fuel shared by each arc ridge is reduced, gathering the fuel at a single arc ridge can be avoided, and it is beneficial to exert the improvement effect of the arc ridge on a wall impact jet flow velocity field at the tail end of a fuel beam, such that the fuel and gas distribution in a cylinder is facilitated, the utilization rate of air in a cylinder cavity is increased, the combustion efficiency is improved, and the heat efficiency of the engine is further improved.

The embodiment of the invention relates to the technical field of corrosion resistance of test materials, in particular to a supercritical CO2 corrosion test system and a sample loading device thereof. The sample loading device comprises a sample chamber; the gas inlet interface is used for introducing supercritical CO2 gas into the sample chamber; the gas outlet interface is used for enabling the supercritical CO2 gas in the sample chamber to flow out of the sample chamber; the sample holding assembly is arranged in the sample chamber and is used for holding a plurality of samples; the rotation driving part is used for driving the sample holding assembly to rotate, so that the supercritical CO2 in the sample chamber can flow along the surface of the sample at a high speed. According to the embodiment of the invention, the sample holding assembly is driven to rotate by rotating the driving part, the relative flow velocity between the supercritical CO2 and the sample in the sample chamber is increased, and the working condition that the supercritical CO2 flows along the surface of the sample at a high speed is simulated, so that the high-flow-velocity supercritical CO2 corrosion test of the sample can be realized.

This application provides a forced circulation system for a dilution refrigerator, relating to the technical field of mK-level dilution refrigeration. The dilution refrigerator has a shell and a room temperature plate disposed on the upper side of the shell. The shell and the room temperature plate form a vacuum chamber. The vacuum chamber contains pre-cooling stage cold plates and multiple core stage cold plates arranged sequentially in a vertical direction. The forced circulation system includes: a pre-cooling mechanism disposed between the room temperature plate and the pre-cooling stage cold plates and cooling the pre-cooling stage cold plates to a target temperature; a driving mechanism disposed on the room temperature plate and generating a driving force for reciprocating movement in a vertical direction under the action of an external force; and a circulation mechanism disposed on the pre-cooling stage cold plates. The circulation mechanism has two first gas chambers arranged sequentially in a vertical direction. Driven by the driving force, the circulation mechanism alternately compresses the helium in the two first gas chambers in a vertical direction, causing the helium to flow back and forth between the pre-cooling stage cold plates and the multiple core stage cold plates and exchange heat, thereby causing the temperature of the multiple core stage cold plates to reach the target temperature.