28 results about "Evaporation duct" patented technology

The invention relates to the technical field of aerospace meteorology, and particularly discloses a domestic numerical weather forecast mode-based evaporation waveguide height determination method, which comprises the following steps of: obtaining meteorological coupling data output by a domestic numerical weather forecast mode CMA-MESO; determining parameters according to the meteorological coupling data and a turbulent flux algorithm COARE; constructing a temperature vertical profile and a specific humidity vertical profile according to the parameters, the Monin-Obchhoff similarity theory and an NPS model; constructing a modified refractive index profile according to the temperature vertical profile and the specific humidity vertical profile; and determining the height of the evaporation waveguide according to the height corresponding to the lowest point of the corrected refractive index profile. The method is suitable for determining the evaporation waveguide height in a domestic business meteorological mode.

The utility model discloses an evaporator assembly and refrigeration equipment, evaporator assembly is used for installing in refrigeration equipment, and evaporator assembly includes two groups of evaporation pipeline that set up adjacently, a plurality of fin fixedly on every group of evaporation pipeline, heating device for heating defrosting, and heating device includes two groups of heating wire, in the thickness direction of evaporator assembly, two groups of heating wire and two groups of evaporation pipeline are alternately arranged and set, and heating wire is fixed on fin. The utility model adopts two groups of heating wire and two groups of evaporation pipeline and alternately sets, and the heat of heating wire between two groups of evaporation pipeline can conduct to the evaporation pipeline position of both sides to heat defrosting to the frost on the both sides surface of evaporator assembly, to improve the efficiency of evaporator assembly heating defrosting. And, heating wire is directly contacted with fin, and the heat of heating wire is conducted to the surface of evaporator assembly through fin.

A heat dissipation cabinet includes a cabinet body and a heat dissipation apparatus. A first accommodation region of the cabinet body can accommodate a plugboard in a stacked manner, and heat source components of the plugboard dissipate heat through the heat dissipation apparatus. An evaporator, a condenser, and an evaporation pipeline of the heat dissipation apparatus are connected to a liquid return pipeline to form a heat exchange loop, and the evaporator is in thermal contact with an outer surface of a heat source component. The condenser is disposed in a second accommodation region and located above the evaporator. A refrigerant flows in the heat exchange loop, to draw heat of the heat source component far to the condenser, and take away heat of the condenser using air generated by a fan. A second accommodation region is used as an independent air duct whose path is relatively short.

The invention relates to the technical field of wireless communication, and discloses an offshore wireless propagation path loss hybrid modeling method suitable for an evaporation waveguide condition, which comprises the following steps: defining a coherent transition distance and a sight distance limit distance, and dividing a propagation area into a coherent interference dominant area, a transition area and an evaporation waveguide dominant area; constructing a CI-MTR core model used for describing the path loss of the coherent interference dominant region; based on a parabolic equation method, calculating path loss under an evaporation waveguide condition, and calculating an environmental excess loss item used for representing path loss change caused by a refraction effect; designing a transition weighting function for smooth fusion model prediction in the transition region; and combining the CI-MTR core model, the environmental excess loss item and the transition weighting function by adopting a piecewise function to form a unified mixed path loss model CI-MTR-PE. And path loss prediction with high precision, high physical interpretability and high calculation efficiency in a full-distance range is realized.

A kind of mute dehumidifier, including evaporator, collector, condenser, compressor, throttling element and connecting pipeline, evaporator, condenser, compressor and throttling element are connected by connecting pipeline;Evaporator is fixedly arranged in the first side of wall in indoor, evaporator includes evaporation pipe and temperature guide plate, evaporation pipe is fixedly installed temperature guide plate away from wall side, temperature guide plate covers at least part wall, collector is located below temperature guide plate, for collecting water drop condensed and fallen of temperature guide plate;Or, evaporator is fixedly arranged below floor or roof in indoor, temperature guide plate is arranged below evaporator, temperature guide plate is partially or entirely inclined at a certain angle, so that condensate can slide along temperature guide plate to lower position, collector is located below temperature guide plate, for collecting water drop condensed and fallen of temperature guide plate.The mute dehumidifier of the application removes fan, uses natural convection mode, not only can realize energy saving, but also can realize mute function.

The application discloses a plate-tube type freezing evaporator in the technical field of refrigeration equipment, which comprises an evaporation plate and an evaporation pipe, the evaporation pipe is fixed on the evaporation plate, both ports of the evaporation pipe are located on the same side of the evaporation plate, a plurality of punching ports are arranged on the evaporation plate, the punching ports are oppositely arranged in pairs, a first folding edge is arranged at the opposite end of the opposite punching ports, the evaporation pipe is arranged on the inner side region opposite to the first folding edge, and the evaporation pipe can be arranged in a single-pipe independent fixing mode or a double-pipe parallel fixing mode in the inner side region, a second folding edge and a third folding edge are sequentially connected to the two sides of the evaporation plate, notches are arranged at the upper and lower ends of the second folding edge, and the two ports of the evaporation pipe penetrate the notches.

This invention relates to the field of aero-engine technology, disclosing a combustion assembly and an aero-engine. The invention includes: a flame tube; an evaporator tube comprising a main pipe and several branch pipes, one end of the main pipe forming an evaporator tube inlet, the branch pipes corresponding to the other end of the main pipe, and the ends of the branch pipes away from the main pipe forming several evaporator tube outlets, which are located within the flame tube; and a fuel supply structure connected to the evaporator tube inlet. This invention, by arranging the branched evaporator tubes in a blood vessel-like pattern on the flame tube, increases the probability of fuel breaking up upon impact with the wall under the action of the branched structure, resulting in better fuel atomization. Simultaneously, because the branched evaporator tubes have a larger contact area with the hot wall surface, they absorb more heat, thus allowing the fuel to be heated more fully, thereby evaporating more fuel and ultimately improving combustion efficiency.

The invention discloses a dual-mode low-emission combustion chamber matched with a standing vortex evaporation tube and a method. The combustion chamber comprises a multi-channel diffuser, an inner casing, an outer casing, a flame tube and a high-energy ignition electric nozzle. The flame tube comprises an outer ring wall plate, an inner ring wall plate, a single-concave-cavity structure, a cap cover, a cross flame supporting plate and M * N evaporation pipes. The trapped vortex combustion chamber is combined with two low-emission advanced combustion organization technologies of RQL and LPP, different combustion modes are adopted in different states or different areas in the whole flight cycle so as to adapt to the oil-gas ratios in different states, and the pollutant emission in the whole working condition range is reduced. And meanwhile, the M * N evaporation pipes can also be used for solving the problem that multiphase fuel oil is difficult to supply normally under the aviation kerosene phase state change caused by fuel oil regenerative cooling.

The application provides an air conditioning system and a control method thereof. The air conditioning system comprises a compressor, a condenser, a first evaporator, a second evaporator, a condensing pipeline and an evaporating pipeline. The condensing pipeline comprises a total condensing main pipeline and parallelly connected first and second condensing branch pipelines. The compressor is connected to the condenser. The condenser is connected to the first and second evaporators through the condensing pipeline. The evaporating pipeline comprises a total evaporating main pipeline and parallelly connected first and second evaporating branch pipelines. The first and second evaporators are both connected to the compressor through the evaporating pipeline. The horizontal height of the inlet of the first condensing branch pipeline is lower than that of the outlet of the first condensing branch pipeline.

The application relates to the technical field of aviation modified engines and discloses an annular backflow combustion chamber and an aero-engine. The annular backflow combustion chamber comprises an inner casing assembly, an outer casing assembly provided with a first nozzle mounting seat, a flame tube comprising an outer ring assembly and an inner ring assembly, an evaporation cavity assembly which is connected between the outer ring assembly and the inner ring assembly and is located at the head of the flame tube, and the evaporation cavity assembly is provided with a first nozzle hole; and an evaporation nozzle which is arranged in the outer casing assembly and the nozzle outlet of the evaporation nozzle is arranged in the evaporation cavity assembly. Compared with the mode that the evaporation pipe is arranged outside the outer ring of the flame tube, the evaporation cavity assembly of the application is connected between the outer ring assembly and the inner ring assembly of the flame tube and is located at the head of the flame tube, so that the evaporation cavity assembly is not affected by the limitation of the radial dimension of the combustion chamber, sufficient evaporation length and oil-gas mixing space can be ensured, fuel atomization and evaporation are more sufficient, and the combustion efficiency of the annular backflow combustion chamber is improved.

A gas heat exchange device for micro direct current variable frequency air conditioner or fixed frequency air conditioner, comprising an evaporation pipe and a ventilation pipe arranged in the evaporation pipe and penetrating the evaporation pipe at both ends; a cavity for conveying refrigerant is formed between the inner wall of the evaporation pipe and the outer wall of the ventilation pipe, the first end of the evaporation pipe is provided with a capillary pipe in communication with the cavity, and the tail end of the evaporation pipe is provided with a conveying pipe in communication with the cavity. The present application can replace the traditional fin type evaporator, has high heat exchange efficiency, small volume and is suitable for small and micro air conditioners.

The utility model discloses an evaporative pipe of inner surface heat exchange relates to refrigeration equipment technical field, the utility model discloses an evaporative pipe main part, heat exchange subassembly, heat conduction board and heat insulating sheet, the inner wall of evaporative pipe main part is fixed with heat exchange subassembly to be annular array, the periphery of evaporative pipe main part is fixed with the connecting piece, and the side of connecting piece away from evaporative pipe main part is fixed with heat insulating sheet, and the periphery symmetry of evaporative pipe main part is fixed with heat conduction board, and heat conduction board is away from heat insulating sheet and sets up, and the length direction of heat conduction board is same with the length direction of evaporative pipe main part.

An ice-making module having a flow-guiding function, relating to the technical field of ice makers. The ice-making module comprises: an evaporator assembly (1), wherein the evaporator assembly (1) is provided with an evaporation tube (12) and a plurality of ice-making cells (11); a flow-guiding plate (2), wherein the flow-guiding plate (2) is fixed on the evaporator assembly (1), the flow-guiding plate (2) is provided with a plurality of through-holes (21) and a plurality of flow-guiding blocks (22), the through-holes (21) are arranged corresponding to the ice-making cells (11), and the flow-guiding blocks (22) are arranged corresponding to the through-holes (21); and a water spray tube (3), wherein the water spray tube (3) is fixed above the flow-guiding plate (2), the water spray tube (3) is provided with a plurality of water spray holes (31), and the water spray holes (31) are arranged corresponding to the flow-guiding plate (2). During ice making, water is introduced from the outside into the water spray tube (3) and is sprayed out from the water spray holes (31). The water flows downward along the surface of the flow-guiding plate (2), accumulates at the top of a through-hole (21) under the action of a flow-guiding block (22), and flows into the interior of an ice-making cell (11) under the surface tension of the water and fills the entire surface of the ice-making cell (11). Part of the water flowing into the ice-making cell (11) freezes into ice, and the unfrozen water flows out from the ice-making cell (11), passes through the next flow-guiding block (22), and then flows into the next ice-making cell (11), until the water flows through the bottommost ice-making cell (11).

The utility model provides an indoor unit heat exchanger, an indoor unit and an air conditioner, relates to the technical field of air conditioners, and solves the technical problem that no heat exchanger structure matched with an axial flow fan exists. The indoor heat exchanger is a fin type heat exchanger and comprises an evaporation pipe set and heat exchange fins. The heat exchange fins are spirally arranged by taking the center of the indoor heat exchanger as the center; the evaporation pipe set is arranged in the multiple circles of heat exchange fins in a penetrating mode. The heat exchange fins are arranged to be of the spiral structure, air flow spirally flowing at the outlet of the axial flow fan passes through the heat exchanger without hindrance, wind resistance is reduced, and the problem that the flowing direction of the air flow at the outlet of the axial flow fan is not matched with that of the air flow of the heat exchanger is solved. Meanwhile, spiral flowing is beneficial to increasing the actual flowing distance of airflow passing through the heat exchanger, the heat exchange efficiency of the heat exchanger is improved, and the size of the heat exchanger is reduced with the same heat exchange amount; compared with a traditional evaporator, resistance is reduced by 35%, and the heat exchange effect is improved by 40%; the fins of the heat exchanger are integrated, so that the stamping process is reduced.

The utility model discloses a kind of topological surface corrugated air conditioner high-efficiency heat exchange evaporation pipes, including evaporation pipe body, the evaporation pipe body is provided with core pipe, the outside of core pipe is fixedly wrapped with heat shrink tube, topological surface is opened in the circumferential inner wall of evaporation pipe body, the inner annular surface of evaporation pipe body is fixedly provided with baffling mechanism. The topological surface corrugated air conditioner high-efficiency heat exchange evaporation pipe, hot medium impact on the narrow part of baffle block, the beam medium is divided into three groups, in turn through baffle block, and pass through multiple groups of baffle block and carry out turbulence blocking, the baffle block of isosceles trapezoidal will main stream be divided into upper center flow, wall flow and lateral flow, form complex vortex system structure behind baffle block, significantly enhance radial mixing;Shunting effect makes fluid constantly scour wall surface, destroy thermal boundary layer, reduce thermal resistance;When fluid passes through multiple groups of baffle block in turn, form disturbance, recovery and again disturbance cycle.

The application relates to a cooling system and method for the upper leakage-stopping ring of a pumped storage unit based on the evaporation heat absorption mode, and belongs to the technical field of hydropower stations. The application comprises a split stacked upper leakage-stopping ring, a temperature sensor, a pipeline, an external circulating cooling system and a control system. The split stacked upper leakage-stopping ring is internally arranged with an evaporation pipeline. A circulating cooling component is communicated with the evaporation pipeline through the pipeline, forming a closed refrigerant circulating loop. The control system is signal-connected with the temperature sensor arranged on the split stacked upper leakage-stopping ring and a variable-frequency compressor in the external circulating cooling system, and is used for controlling the operation of the variable-frequency compressor according to the temperature signal collected by the temperature sensor. Through the construction of an efficient refrigeration circulating system, the application realizes the accurate cooling of the upper leakage-stopping ring, avoids the contact between the cooling water and the runner, improves the operation stability of the unit, and reduces the system cost and energy consumption.

The refrigeration equipment comprises an inner container and an evaporation pipe wound around the periphery of the inner container, a storage chamber is defined by the inner container, the refrigeration equipment further comprises an air duct piece and an air return piece, the air return piece is connected with the inner container and exchanges heat with the inner container, the air duct piece is arranged in the storage chamber and is connected with the air return piece, and an air return duct is defined by the air return piece; the air duct piece is internally provided with an air supply duct and an air return duct, the air supply duct is sequentially communicated with the storage chamber, the effective heat exchange area S heat exchange of the air return piece and the inner container meets the condition that S heat exchange is larger than or equal to 13 / 30 * S chamber minus 0.26, the S chamber is the area of the storage chamber on the plane perpendicular to the first direction, and the unit of the S heat exchange and the unit of the S chamber are both m2; the first direction is the opening direction of the storage chamber. It can be guaranteed that air in the air return duct can exchange enough cold energy with the inner container, and the temperature uniformity of all areas in the storage chamber is improved.

Provided is a backflow combustor for a gas turbine provided with a rotary shaft having an axis extending in the axial direction, said backflow combustor comprising: an outer liner and an inner liner that both extend about the axis and that both have a ring shape; an end liner that is disposed on one side of both the liners in the axial direction, that connects the outer liner to the inner liner, and that has a ring shape; a combustion chamber that is defined by these liners; and an evaporation tube that is connected to the outer liner, that is disposed in the combustion chamber, and that evaporates fuel in an internal flow path communicating with an opening of the outer liner into which a fuel injector is inserted. A tip end part of the evaporation tube positioned on the opposite side from the opening side of the outer liner in the internal flow path is connected to a specific liner.

METHOD FOR REDUCING CORROSION FATIGUE IN EVAPORATION TUBE IN BOILERS. The present invention relates to the effective reduction of corrosion fatigue in an evaporation tube in a boiler that occurs in association with a corrosive environment or repeated application of stress due to the presence of scale. The invention also relates to a method for reducing corrosion fatigue in an evaporation tube in a boiler, in which each chloride ion concentration and the sulfate ion concentration in the boiler water is managed to 10 mg / l or less. It is preferable to manage each chloride ion concentration and the sulfate ion concentration in the boiler water by subjecting the boiler feedwater to a desalination treatment with an ion exchange device, a reverse osmosis membrane device, or an electrodeionization device, or by increasing the boiler condensate collection rate.

This reverse flow combustor for a gas turbine comprises: an outer liner which includes an opening into which a fuel injector is inserted; an annular inner liner; an annular end liner which is disposed on one side of the outer liner and the inner liner in the axial direction, and connects the outer liner to the inner liner; a combustion chamber which is defined by the outer liner, the inner liner, and the end liner; and an evaporation tube which is connected to the outer liner, and includes a main flow path in communication with the opening of the outer liner. The evaporation tube further includes a cooling air flow path disposed between an inner surface and an outer surface of the evaporation tube and in communication with the outside of the combustor.

The present application relates to cold technology field, particularly to a kind of plate tube throttling evaporation assembly and refrigeration device.The plate tube throttling evaporation assembly includes evaporation module and throttling module.Evaporation module includes evaporation plate and the evaporation tube fixed on it;Throttling module is relatively independently arranged outside evaporation module and is connected with the inlet end of evaporation tube.In the plate tube throttling evaporation assembly of the present application, throttling module and evaporation module are split structure, throttling module is relatively independently arranged outside evaporation module, not only can reduce vibration and noise, but also can increase the pipeline length of evaporation tube on evaporation plate, so as to increase heat exchange capacity.

The invention relates to the technical field of wireless communication, and discloses a ship multi-waypoint path planning method for an evaporation waveguide channel map. The method comprises the following steps: in a marine multi-node data collection scene, establishing a single-input and single-output ship multi-leg segment transmission motion model and a communication model; constructing a channel gain map by using an electromagnetic wave propagation model based on a parabolic equation; constructing a multi-target optimization problem model of the multi-leg segmentation constraint; a near-end strategy optimization algorithm fusing offline generalization training and online real-time reasoning is provided; and carrying out visual verification on a multi-waypoint track output result of the PPO algorithm, and proving the real-time adaptability and segmented transmission reliability in a dynamic scene. Through'offline training of a unified strategy model + online state real-time response ', a ship is used as an intelligent agent, the optimal course is quickly output according to the current leg position, channel quality and remaining data volume, multi-transit-point segmented transmission time limit constraint is met, and dynamic collaborative optimization of data transmission and navigation time is realized.

The invention relates to the technical field of engine design, in particular to a squirrel-cage evaporation pipe oil supply device and a combustion chamber. Comprising a nozzle with an oil inlet and an oil outlet; an evaporation pipe inlet is formed in one end of the evaporation pipe, the oil outlet of the nozzle is inserted into the evaporation pipe inlet, an end wall surface is arranged at the other end of the evaporation pipe, and a plurality of outlet grooves are formed in the circumferential surface of the evaporation pipe; and the plurality of turbulent flow pieces are arranged on the inner side wall of the evaporation pipe and are positioned between the oil outlet and the outlet groove. In the application, the compressor in the engine can feed high-temperature and high-pressure air into the inlet of the evaporating pipe, and the oil outlet is provided with a plurality of openings, so that fuel jet flow is not a single concentrated stream in the prior art, but is dispersed into a plurality of streams in advance, and the contact circumferential length of fuel and the pipe wall and the contact surface area of the fuel and the air are increased; a part of fuel oil is atomized and evaporated to form a mixture of oil mist.

The application discloses a porous evaporation pipe type fuel grading multi-nozzle combustion chamber, which comprises a head end wall, a fuel supply assembly and a flame tube, wherein the fuel supply assembly comprises a duty class nozzle structure, multiple auxiliary combustion nozzle structures and multiple main combustion nozzle structures; the duty class nozzle structure is arranged at a center position; and each auxiliary combustion nozzle structure is arranged in a dispersed manner in a circumferential direction with two main combustion nozzle structures arranged between the auxiliary combustion nozzle structures. The main combustion nozzle structure adopts a porous evaporator and is provided with a three-stage air inlet structure; the first two stages are reverse swirls, and the third stage is straight flow; and the shear of the two-stage reverse swirl air flow makes the oil-gas mixture more uniform. The duty class nozzle structure is provided with a restricted domain with a three-stage progressive eccentric air inlet hole, so that the duty class flame is isolated from the main combustion cold air, and quenching is avoided. The application has the advantages of high combustion efficiency, stable structure, small volume and low nitrogen oxide emission.

The utility model provides a barrel type evaporator which comprises an outer layer barrel wall, an inner layer barrel wall, a first end wall, a second end wall, a refrigerant inlet pipe and a refrigerant outlet pipe, the outer layer barrel wall surrounds the outer side of the inner layer barrel wall, and the first end wall is connected with one end of the outer layer barrel wall and one end of the inner layer barrel wall in a sealed mode. The second end wall is connected with the other end of the outer-layer barrel wall and the other end of the inner-layer barrel wall in a sealed mode, an evaporation cavity is formed between the outer-layer barrel wall and the inner-layer barrel wall, one end of the evaporation cavity is communicated with at least one refrigerant inlet pipe, and the other end of the evaporation cavity is communicated with at least one refrigerant outlet pipe. An axial through hole is formed in the inner side of the inner-layer barrel wall, a communicating hole is formed in the first end wall and / or the second end wall, and the axial through hole is communicated with the outside through the communicating hole. According to the barrel type evaporator, an evaporation pipe formed by a metal spiral pipe is omitted, the external heat exchange area of the evaporator is increased, the cold conduction efficiency is high, the complexity of the production process can be reduced, and the production cost is reduced.

The invention discloses a gas-liquid separation device and an air conditioning system.The gas-liquid separation device comprises two baffles and a liquid baffle, the side walls of the baffles are obliquely arranged to form a containing cavity, the liquid baffle is arranged in the containing cavity and divides the containing cavity into a first cavity body and a second cavity body, the first cavity body is used for introducing gas-liquid two-phase refrigerants, and the second cavity body is used for introducing gas-liquid two-phase refrigerants; and the first chamber is used for separating the refrigerant into a gas-phase refrigerant and a liquid-phase refrigerant, and the second chamber is used for introducing and discharging the gas-phase refrigerant separated by the first chamber. Compared with the prior art, the gas-liquid separation process is carried out in the gas-liquid separation device, it can be guaranteed that the gas-liquid separation effect is not affected when the pipe distribution area of the flooded evaporator is below the assembly height of the gas-liquid separation device, and the height of the pipe distribution area can be allowed to exceed the center line of a shell of the flooded evaporator; and more evaporation pipes can be arranged, so that the energy efficiency and the heat exchange efficiency of the unit are improved on the premise of not changing the boundary dimension specification of the flooded evaporator.

The invention relates to the technical field of small aero-engines, and discloses a turbojet engine combustion chamber evaporating pipe structure which comprises an evaporating pipe, an oil needle, an oil distributing ring, a guider and a combustion chamber, a throttling sleeve is arranged on the inner side of the inlet end of the evaporating pipe, and the outlet sectional area of the throttling sleeve is smaller than the sectional area of the inner wall of the evaporating pipe; a throttling sleeve is additionally arranged on the inner side of the inlet end of an evaporation pipe of a combustion chamber, the sectional area of an inlet of the evaporation pipe is reduced after the throttling sleeve is additionally arranged, when air enters the evaporation pipe, the air flow speed can be reduced according to the Bernoulli equation, on one hand, the time of air staying in the evaporation pipe is long, and on the other hand, the air flow speed is reduced; on the other hand, the heat exchange efficiency of the evaporation pipe can be improved, and due to the fact that the evaporation pipe sleeve is additionally arranged, a gas direct flow mode of a traditional evaporation pipe is changed into an increased diffusion flow mode, and the turbulence intensity can be enhanced.