45results about How to "Improve air utilization" patented technology

The invention relates to a shape of a combustion chamber for a direct-injection diesel engine, in which a mixture in, particularly, an expansion stroke is promoted by optimally designing the shape of the combustion chamber, and further, the compatibility between PM reduction and NOx reduction can be achieved by improving a retardation limit and speeding up combustion at a high EGR. The inside of a combustion chamber 12 formed at a top of a piston is formed in such a manner that a vertically cross-sectional shape passing a center axis O2 inside of the combustion chamber is symmetric with respect to the center axis. Furthermore, an opening 18 at an upper end of the combustion chamber 12 is formed into a substantially polygonal shape in combination of round portions 21 and straight portions 22.

The invention relates to a combustion chamber structure reconstructed on a basis of a common omega-shaped diesel engine combustion chamber. A top shunt model is processed and manufactured on the outer margin of an original omega-shaped combustion chamber without changing the matching relationship among the geometric size, the fuel injection included angle and the fuel injection characteristic of a fuel injector of the original reference omega-shaped combustion chamber. When fuel knocks the top shunt model in a right moment, the fuel turns into a lateral swirl to improve the far-end air utilization rate of the combustion chamber, expand a fuel distribution area of the combustion chamber in a radial direction and accelerate the mixing and the combusting of oil and air of the diesel engine so that the requirement for an intake swirl is relatively lowered. In the invention which is reconstructed on a basis of the original common omega-shaped combustion chamber, the top shunt model is easy and practical to process.

A fuel cell stack (7) has a two-pass fuel flow field (11, 14) extending from a fuel inlet (8) around a fuel turnaround manifold (12) to a fuel outlet (15). The stack has two air flow fields (37, 40) extending from an air inlet (32) through an air turnaround manifold (38) to an air outlet (41), the air outlet (41) being adjacent to the fuel outlet (15). The stack includes a coolant flow field (23, 25, 27) which extends from a coolant inlet (21) to a coolant outlet (28), the coolant inlet being adjacent to both the fuel outlet and the air outlet. The fluid flow configuration provides lower temperature, a more even temperature profile, a higher coolant exit temperature, and permits operation with higher air utilization and lower coolant flow.

The invention relates to a rotational flow mixer, at least comprising a reaction container for filling liquid, wherein an air inlet is arranged on the container. The rotational flow mixer is characterized in that inner shells are arranged above the air inlet, a gas phase rotational flow passage is formed between the inner shells and the inner wall of the container or between the inner shells, outer shells are arranged above the inner shell, a liquid inlet is arranged in the middle of each outer shell, a fluid rotational flow passage is formed between the outer shells and the inner shells, theouter end parts of the gas phase rotational flow passage and the fluid rotational flow passage are converged into a gas-liquid mixed flow rotational flow passage, and the gas-liquid mixed flow rotational flow passage is located between the outer shells and the inner wall of the container or between the outer shells so that the gas-liquid mixed effect is favourable, a gas-liquid contact area is big, and the rotational flow mixer can be also used as a pneumatic stirrer.

The invention discloses an independent air lifting dual circulation fermentation tank, which comprises a tank body (1), a heat insulation layer (2), external circulation devices (2.3 and 2.4), an air inlet pipe (3), an air inlet pipe check valve (3.4), air distributors (3.1, 3.2 and 3.3), internal circulation devices (4, 4.1, 4.2, 4.3 and 4.4), a fermentation temperature inductor (5), a feeding hole (6), a defoamer inlet (7), a tank cover (manhole) (8), an exhaust port (9), a pressure valve (10), a discharge hole (11), a heater (12), observation windows (1.1 and 2.7) and the like. The fermentation tank is connected to an instrument controller through a circuit. The fermentation tank is scientific and reasonable in design, overcomes defects of the prior art, is simple in structure, easy tooperate, low in energy consumption and good in fermentation effect, and has high industrial implementation.

The invention belongs to the related technical field of diesel engines, and discloses a combustion chamber system suitable for a high-power-density diesel engine. The combustion chamber system comprises a main combustion chamber and an auxiliary combustion chamber, wherein a fuel oil mist beam of a fuel injector in the main combustion chamber points to a protrusion of the main combustion chamber,collides with the protrusion and is divided into an upward plume and a downward plume, and the tendency of forming oil-in-fire in the later period of combustion is weakened; high-temperature and high-pressure gas combusted in the auxiliary combustion chamber is sprayed out through a throat opening and comprises a horizontal component and a vertical component, the horizontal component disturbs thespraying direction of the fuel oil mist beam in the main combustion chamber, the oil-in-fire phenomenon in the early combustion stage is broken, and the vertical component pushes a piston to do work downwards; and air entering the auxiliary combustion chamber through the throat opening forms a rotational flow in the auxiliary combustion chamber, complete combustion of fuel oil in the auxiliary combustion chamber is promoted, and the inhibition effect on the oil-in-fire phenomenon is improved. According to the combustion chamber system, the oil-in-fire phenomenon existing in the high-power-per-liter diesel engine is solved, the combustion efficiency of an internal combustion engine is improved, and the practicability is very high.

The invention relates to a fog shape micro-bubble gas jet current aerated head, which comprises a gas inlet structure, a gas outlet end sleeved at the gas inlet structure, and a gas outlet structure tightly combined with the gas inlet structure. The center of the gas inlet structure axially forms a gas inlet channel; a pressure balancing channel is axially formed between the inner wall and the outer wall of the gas inlet structure; the outer wall of the gas inlet structure extrudes outwards so as to form a balancing gas pipe which is communicated with the pressure balancing channel; the gas outlet end of the gas inlet structure forms an outer screw thread used for connecting the gas inlet pipe; the gas inlet channel is internally provided with a nozzle core. The center of the gas outlet structure axially forms a gas outlet channel; the joint of the front end of the gas outlet structure and the gas outlet end of the gas inlet structure is formed with a mixing chamber which is communicated with the gas outlet channel of the gas outlet structure; the mixing chamber is internally provided with a ball shape unilateral valve. The fog shape micro-bubble gas jet current aerated head of the invention can cause the water in the biological pool to produce fog shape micro bubble, can effectively improve the air utilization rate, the power efficiency and the mixing efficiency, reduce the power consumption of a draught fan, reduce the capacity of the draught fan, and reduce the cost.

A low-heat-loss diesel engine combustor structure comprises an air cylinder piston; a slope flow guiding conical surface and a lower vortex groove are coaxially formed in the top of the air cylinder piston; a flow guiding step surface is arranged between the lower vortex groove and the slope flow guiding conical surface; the included angle alpha between the flow guiding step surface and the slopeflow guiding conical surface is 120 degrees to 165 degrees; the included angle phi between the flow guiding step surface and the top surface of the air cylinder piston is 0 to 30 degrees; upper vortexgroove is formed in the portion, outside the lower vortex groove, of the top of the air cylinder piston; the projection width H of the flow guiding step surface on the top surface of the air cylinderpiston is 1 mm to 6 mm; the slope flow guiding conical surface is connected with the inner circumference of the flow guiding step surface through a first flow guiding arc; and the outer circumferenceof the flow guiding step surface is connected with the lower vortex groove through a second flow guiding arc. Through the design, fuel and flame can expand to the middle of a combustor, fuel is combusted fully, a high temperature region at the bottom of the piston moves to the middle of the combustor, and thus heat loads and heat transfer losses of the combustor are reduced.

The invention discloses a needle valve component for a fuel injection device. The needle valve component comprises a valve body (10) and a needle valve (20). The valve body is provided with a valve body end (12), a valve hole (14), an oil inlet channel (16) and an oil injection hole (18). The oil injection hole comprises a first group of oil injection holes (181) and a second group of oil injection holes (182), wherein the first jet angles of the first group of oil injection holes are smaller than the second jet angles of the second group of oil injection holes, and the communicating positions of the first group of oil injection holes and the valve hole are closer to the valve body end than the communicating positions of the second group of oil injection holes and the valve hole. The needle valve can reciprocate in the valve hole and comprises an oil inlet ring groove (26), an oil outlet ring groove (28) and an oil supply channel (24) for communicating the oil inlet ring groove and a first oil outlet ring groove. The first oil outlet ring groove is respectively communicated with the first group of oil injection holes and the second group of oil injection holes, the fuel oil is sprayed at different jet angles so as to adapt to oil-gas mixing under different loads, the oil consumption and discharge under the different conditions are both considered, and the needle valve component has the advantages of simple structure and convenience for processing.

The invention discloses a device for preparing reconstituted tobaccos by a multi-point air inlet type thick slurry method. The device sequentially comprises a raw material storage tank (1), a formingand drying device (2), a stripping device (3) and a winding device (4). The device is provided with a plurality of hot air fans (271i); each hot air fan (271i) is connected with a ventilation pipe (272i) extending towards a formed steel strip (21) in the direction perpendicular to the formed steel strip (21); the angle between the direction of hot air blown by a pipe opening (273i) of each ventilation pipe (272i) and the operation direction of the reconstituted tobaccos is 90-180 degrees; and the temperature and quantity of the hot air blown by each hot air fan can be independently adjusted. The device can be used for forming, drying and preparing the reconstituted tobaccos for heat-not-burn cigarettes into samples, and provides support for research of the heat-not-burn cigarettes.

The invention relates to a wet desulphurization sulfur flotation device and method, and belongs to the technical field of chemical engineering. The wet desulphurization sulfur flotation device comprises a regeneration tank, a Roots blower or an air compressor, an air aeration connecting pipeline and an air aeration membrane pipe; the Roots blower or the air compressor is communicated with the air aeration membrane pipe through an air aeration connecting pipeline; and the air aeration membrane pipe is positioned in the regeneration tank. Air bubbles formed by the tubular aeration membrane are small, the air utilization rate is high, the size of regeneration equipment is small, the height of the regeneration equipment is not more than 10 m and is less than or equal to 1/4 of that of high tower regeneration equipment, and the equipment investment cost is obviously reduced. A rotary stirrer is driven by hydraulic power, so that sulfur is always kept in a suspended state in the desulfurization liquid, sedimentation and accumulation of the sulfur are avoided, and flotation of the sulfur is facilitated. And no extra energy is supplemented in the stirring process.

This application describes a mixing system for a gas turbine combustor arrangement, the mixing system including a lobed mixer and a wall, enclosing a fluid flow path, wherein the lobed mixer is arranged in the wall, between a first part of the wall and a second part of the wall, and wherein the first part of the wall and the second part of the wall are spaced apart in the direction of a lobed mixer axis. Details of the lobed mixer and a method of mixing two flows in a mixing system are also described.

The invention puts forward an efficient desulfurized seawater quality restoration method, which includes the steps of: subjecting desulfurized seawater to ozone aeration treatment to oxidize SO3<2-> in the desulfurized seawater into stable SO4<2->; conducting air aeration treatment on the desulfurized seawater to expel CO2 in the seawater to restore the pH value of the desulfurized seawater to more than 6.8. The invention also puts forward an efficient desulfurized seawater quality restoration system, which includes an ozone aeration zone for rapidly oxidizing SO3<2-> in the desulfurized seawater into stable SO4<2->; and an air aeration zone for expelling CO2 in the seawater so as to restore the pH value of the desulfurized seawater to more than 6.8. Compared with the traditional process, the method and the system provided by the invention can rapidly oxidize SO3<2-> into SO4<2-> under low pH, greatly shorten the time needed for oxidizing SO3<2-> into SO4<2->, also can effectively reduce the blending amount of seawater in a regulation pool, and are in favor of reducing the hydraulic retention time in an aeration pool and saving aeration pool land occupation.

In a compression-ignition engine having a two-stage cavity, the distribution ratio between fuel for an upper cavity and fuel for a lower cavity is maintained even when the operational state of the engine changes. A piston of the compression-ignition engine includes a lower cavity, an upper cavity, and a lip portion between the lower cavity and the upper cavity. A controller causes a main injection and at least one pilot injection to be executed when the engine operates in a first state and a second state in which the speed is higher than the speed in the first state. The fuel spray is distributed to the lower cavity and the upper cavity. The controller increases an injection amount per pilot injection when the engine operates in the second state than when the engine operates in the first state.

The invention provides a tubular device and a method for producing cold water by means of indirect evaporation and direct evaporation. The tubular device is characterized in that the air which enters from a wind inlet (16) is firstly cooled by an air cooler (8) by means of constant wetness, the air enters a tubular indirect heat exchanger (7) to be secondly cooled by means of constant wetness, the air which is secondly cooled by means of constant wetness enters from the bottom of a lower direct evaporator cooler (10) through a wind return chamber (9), sequentially passes through the space between the lower direct evaporator cooler (10) and the tubular indirect heat exchanger (7) and an upper direct evaporator cooler (6) from down to top to exchange the heat with spray water by convective transfer mass to produce the cold water for a user, the return water used by the user is used for cooling the air which firstly enters from a wind inlet (16) through the air cooler (8) by means of constant wetness, and the nearly-saturated or saturated wet air is discharged by an exhaust fan (3) through a wind outlet (2), so that the circulatory refrigeration is realized. The water is taken as a refrigerant, a mass of refrigerants can be saved, the use cost of the user can be lowered, and the environment can not be polluted, so that the tubular device is low-carbon and energy-saving.

The invention discloses an additive for wet desulphurization of industrial flue gas limestone gypsum. The additive comprises 20%-75% of organic acid, 20%-75% of salt corresponding to the organic acid,0.1%-8% of metal sulfate, 0.1%-8% of dispersing agent, 0.1%-8% of corrosion inhibitor, 0.1%-8% of metal ion complexing agent, 0.1%-20% of scale inhibitor, 0.1%-8% of oxidizing agent and 0.1%-5% of nano calcium sulfate. The additive can be used in a desulfurizing absorption tower, and has the functions of improving the desulfurizing effect, preventing corrosion and scale and purifying gypsum.

A novel mobile ozone device comprises universal wheels, a handle, a storage battery, a valve, a control center, an air chamber, an ozone concentration detector, a temperature detector, an ozone generator, a water cooling device, a fan, an air pump, an air inlet and an air outlet. Preparation and concentration of ozone are automatically controlled, harm of the ozone to human bodies is reduced, theair inlet is formed in one side of a casing, so that the air inlet speed and the air utilization rate are increased, and the service life of the ozone device is prolonged; the air outlet is formed inthe upper part of the casing, the ozone is discharged upward, and the sterilization effect on air is improved; the water cooling device is arranged in the device to ensure that the ozone cannot be decomposed due to excessive heat during electrolysis; water is circulated in the water cooling device, and an external water source is not needed. The device can be used as an ozone reservoir when beingmoved; the temperature detector, the concentration detector and the control center are arranged in the device, the ozone generation rate and on-off of a water pump can be automatically adjusted, and resources are saved. The device is provided with the universal wheels and the storage battery, can be shared by a plurality of to-be-sterilized rooms, and is convenient to move.

A diesel engine (1) configured so that fuel spray patterns (45, 46) are formed in a combustion chamber (15), in which the swirl flow (W) of intake air is being generated, by directly injecting the fuel from a fuel injection nozzle (4) having a multiple nozzle hole structure. The diesel engine (1) is provided with a superposition avoidance structure for reducing the superposition of the fuel spray patterns (45, 46) emitted from adjacent nozzle holes (34a, 35a). A valve timing mechanism (17) is provided as the superposition avoidance structure, and the valve timing mechanism (17) sets the timing (29a, 50a, 51a), which is the start point of the valve closing operation of air intake valves (3c, 3c) for sucking air into the combustion chamber (15), to a point before the bottom dead center (B) of air intake. Also, the valve closing operation is provided with a buffering section (52) in which the seating speed of the air intake valves (3c, 3c) is reduced to buffer the impact of the seating, and the timing (51c) which is the start point of the buffer section (52) is set to a point before the bottom dead center (B) of air intake.

The invention provides a fuel cell system, a control method and a control device thereof, and a vehicle. The fuel cell system comprises a fuel cell reaction device, wherein the fuel cell reaction device comprises a shell and an electric pile arranged in the shell, and the shell comprises an inlet; a valve body which comprises a first opening and a second opening; and a compressor, wherein an air outlet of the compressor is communicated with the first opening, and a second opening of the valve body is communicated with the inlet of the shell. On one hand, the utilization rate of air pressurized by the compressor can be improved, more importantly, high-temperature air entering the stack shell can quickly increase the environment temperature of the stack, the time for low-temperature cold start of a fuel cell system is shortened, the cold start process of the fuel cell is accelerated, and the use experience of a user is improved.

The invention discloses a dedusting and spraying device for constructional safety engineering. The device comprises a walking platform, a mounting table, a water tank and a dedusting and spraying assembly, wherein the mounting table is fixed on the walking platform, the water tank is placed below the mounting table, the water tank adopts a water pump to continuously supply water to a water supplypipe, the dedusting and spraying assembly is fixed to the water supply pipe, the water supply pipe is rotatably arranged on the mounting table, the bottom of the water supply pipe is connected with the water outlet end of a water pump through a rotary joint, a driven wheel is coaxially fixed to the water supply pipe and engaged with a driving wheel, the driving wheel is fixed to the output end ofa forward and reverse rotation motor, the dedusting and spraying assembly comprises a dedusting assembly and a stirring spraying assembly, the dedusting assembly and the stirring spraying assembly areboth driven by a rotating motor in a unified mode, and an air outlet end of the dedusting assembly communicates with a spraying end of the spraying assembly so as to increase a spraying amount.