54results about How to "Uniform temperature difference" patented technology

A method for the indirect application of printing liquid onto a printing material provides an intermediate carrier, preferably a circulating belt, a liquid conditioning medium including a first substance applied onto the intermediate carrier and a printing liquid, in particular an inkjet ink, including a second substance applied onto the conditioning medium on the intermediate carrier. The printing liquid is situated as droplets or a layer substantially on the conditioning medium and the droplets or the layer form a contact region on their underside with the conditioning medium. The printing liquid is heated, preferably by way of a dryer and the printing liquid is transferred from the intermediate carrier onto the printing material.

An air-conditioning apparatus uses carbon dioxide as a refrigerant, and includes comprises a two-stage-compression-type compression mechanism, a heat source-side heat exchanger, an expansion mechanism, a usage-side heat exchanger, and an intercooler. The intercooler uses air as a heat source. The intercooler is configured and arranged to cool refrigerant flowing through an intermediate refrigerant tube that draws refrigerant discharged from the first-stage compression element into the second-stage compression element. The intercooler is integrated with the heat source-side heat exchanger to form an integrated heat exchanger, with the intercooler disposed in an upper part of the integrated heat exchanger.

The invention discloses a method and device for recycling mixed refrigerant refrigeration natural gas light hydrocarbon, and belongs to the field of natural gas light hydrocarbon recycling. The method and device aim at solving the problems that according to an existing natural gas light hydrocarbon recycling method, the C3 recycling rate is low, the technological process is complex, the load adjusting capacity is poor, and energy consumption is high. According to the method and device, feed gas enters a main heat exchanger, is subject to partial condensation and then enters a deethanization tower; a gas phase produced from the tower top of the deethanization tower is subject to reheating through the main heat exchanger and then is transported outwards as product gas, and a liquid phase guided out from the tower bottom of the deethanization tower enters a debutanization tower; and a liquefied petroleum gas product is obtained from the tower top of the debutanization tower, and a condensate oil product is obtained from the tower bottom of the debutanization tower. The cold amount needed in the light hydrocarbon recycling process is provided by a mixed refrigerant refrigeration system. The method and device have the beneficial effects of being high in C3 recycling rate, flexible in operation, high in raw material adaptability, low in energy consumption, simple in flow, small in investment and the like, has the good application prospects, and is worth of large-scale application and popularization.

The invention discloses a multi-level single-component refrigeration natural gas liquefaction system and a multi-level single-component refrigeration natural gas liquefaction method. Purified natural gas is cooled gradually in six heat exchangers (evaporators) and a plate fin type heat exchanger (natural gas subcooler) until being liquefied. Cold energy required by the liquefying process is provided by a propane system, an ethylene system and a methane system. The system is rich in adjusting means, the cold energy matched with the natural gas liquefying process can be provided for the naturalgas liquefying process, and thereby operational flexibility and adaptability to raw materials of the method are embodied. The system and the method have the advantages that the natural gas liquefyingprocess is low in energy consumption; refrigerant compressors are all single-component compressors, so that design is easier, purchase is more convenient, the compressors are more stable in operation, domestic equipment can be used, and construction investment of liquefaction factories can be effectively reduced; and the liquefying process is wide in heat exchanger selection range, and a cold boxstructure and a tube-shell structure can be used simultaneously or alternatively.

The invention relates to an active portable welding joint intelligent detector which comprises an active heat source positioned above a welding joint position of a welding workpiece. The upper part ofthe active heat source is connected with an information detection and processing unit by a mounting bracket; a power supply module is respectively connected with the active heat source and the information detection and processing unit so as to provide a power supply to the active heat source and the information detection and processing unit; the information detection and processing unit comprisesan array-type infrared temperature detection module for detecting a temperature of a welding joint and a visible light and depth camera module for detecting luminosity of the welding joint; an information processing module is respectively connected with the array-type infrared temperature detection module and the visible light and depth camera module; and the information processing module is alsosequentially connected with a data storage module and a data transmission module. By the active portable welding joint intelligent detector disclosed by the invention, rapid evaluation on welding quality can be implemented; and compared to existing welding quality evaluation, the evaluation of the active portable welding joint intelligent detector has the advantages of light weight, convenience in carrying and low cost.

Disclosed is a spiral and axial circulating cooling water channel structure for a motor. The cooling water channel structure comprises a stator iron core of the motor, a cooling water channel is arranged in the iron core, the cooling water channel comprises a first spiral channel and a second spiral channel which are adjacent and extend parallelly, the inlet end of the first spiral channel is adjacent to the outlet end of the second spiral channel, and the outlet end of the first spiral channel is adjacent to and communicated with the inlet end of the second spiral channel. The first spiral channel and the second spiral channel are arranged parallelly along the axial direction of the iron core. Cooling water flows from the front end of the stator iron core to the back end of the stator iron core, then flows back to the front end, can evenly cool the iron core, and reduce the temperature difference between the front end and the back end of the stator iron core. The cooling water generates turbulence during backflow, which reduces the thermal resistance, and increases the heat exchange coefficient and the ratio of heat exchange, so that temperature increasing of the motor can be reduced, the power density can be improved; and the sealing can be achieved by using one rubber gasket, and the reliability and the process are remarkably improved.

The invention relates to a method for producing liquid sulfur trioxide and high-concentration oleum, which belongs to the technical field of inorganic chemical industry. The method is to preheat a 25 to 30 percent oleum directly through a preheater, heat the oleum in a heater, evaporate the loeum in an evaporator so as to improve the evaporation efficiency; the evaporator is heated by converter gas of a sulphuric acid system, thereby saving the vapor used by the SO3, and reducing the production cost; and the heating side of the evaporator does not generate condensate liquid, but has even temperature difference, thereby prolonging the service life of the evaporator. Besides, the 65 percent high-concentration oleum is directly prepared from the 25 to 30 percent oleum and the liquid sulfur trioxide, does not need treating tail gas, and greatly simplifies the production process. The method solves the problems that the prior production method is to heat by vapor, so the production cost is high and the evaporator has short service life, and adopts an absorption tower for absorption during the production of 65 percent oleum, so the quality of the product is difficult to control and the tail gas after absorption needs further treatment.

The invention discloses a battery heat management device which comprises first and second heat radiation devices. The first heat radiation device comprises a heat conducting side plate applied to thesurface of the battery, capillary tubes vertically arranged in the heat conducting side plate, and a liquid storage chamber positioned in the bottom of the heat conducting side plate, the liquid storage chamber contains a phase-transition material, and the capillary tubes are communicated to the phase-transition material in the liquid storage chamber; and the second heat radiation device is used to cool the battery or / and the heat conducting side plate in a forced way. According to the disclosed battery heat management device, the capillary tubes and water absorption fibers needless of power for drainage are used to take away heat from the battery for multiple times, the phase-transition material is saved, the environment is protected, and influence on a heat radiation effect when a lot ofphase transition materials contained in the cavity shake and do not make fully contact with the heat conducting side plate can be avoided; and the temperature difference in the battery and between different batteries can be balanced rapidly, heat accumulation is reduced, the service life of the battery is prolonged and a good work temperature environment is provided for the battery.

The invention relates to the technical field of DC-DC converters, in particular to a DC-DC converter device of a hydrogen fuel cell and a current control method thereof. According to the DC-DC converter device, a branch current acquisition module is responsible for acquiring real-time current of each phase branch and transmitting the real-time current to a DSP controller module; the branch currentacquisition module, a first voltage and current sampling and short circuit monitoring module and a second voltage and current sampling and short circuit monitoring module are electrically connected with the input end of the DSP controller module; the output end of the DSP controller module is electrically connected with the input end of an energy storage element and he input end of a power isolation switch tube module through an isolation switch tube driving module; and the first voltage and current sampling and short circuit monitoring module and the second current sampling and short circuitmonitoring module are respectively responsible for acquiring input end voltage and current and output end voltage and current and also responsible for monitoring input end current and output end current in real time so as to realize rapid response to the situation of overcurrent or short circuit of a circuit and rapid transmission of warning signals to the DSP controller module.

The invention discloses a bamboo veneer semi-finished product dryer, and relates to a drying device. The structure of the bamboo veneer semi-finished product dryer consists of a motor, a drive mechanism, a delivery mechanism, a box-shaped sealed cover body and a radiating fin, and is characterized in that: holes are reserved on the upper surface of the sealed cover body for fixing a plurality of axial flow fans; an exhaust tube is fixed in front of each axial-flow fan; the air outlet of the exhaust tube is communicated with the air inlet of each axial-flow fan through a pipeline; a rotating drum is respectively sleeved on a drive shaft and a driven shaft of the delivery mechanism fixedly; a plurality of pairs of spacing steel rings are fixedly welded on the outer circle of each rotating drum; a steel rope ring circles in the spacing space of the steel rope rings corresponding to the outer circles of each pair of drive and driven rotating drums; and a plurality of transverse pipe brackets are uniformly arranged on an inner rack of the delivery mechanism fixedly. The bamboo veneer semi-finished product dryer has the advantages that: the internal circulation of waste heat air is fully utilized by the combination of the exhaust tubes and the axial flow fans; and the temperature differences of each section are relatively uniform. The structure is simplified by taking a steel rope instead of a chain crawler type screen plate as a delivery belt; and the operation is balance.

An energy-saving vacuum double cavity holding furnace comprises a vacuum furnace shell mechanism, a heating mechanism and a degassing crucible mechanism, wherein the vacuum furnace shell mechanism is provided with a furnace shell, an inner shell, reinforcing ribs, a furnace cover, a sand injecting opening and a furnace bottom, wherein a vacuum cavity is formed between the inner shell and the furnace shell, the heating mechanism is provided with an electric heating wire, a power distribution box, magnesia and a thermocoupler, and the degassing crucible mechanism is provided with a crucible, a degassing brick, a gas inlet tube and a degassing control valve. The temperature of the heating mechanism and the temperature of the degassing crucible mechanism are preserved through a vacuum furnace sleeve, the thermal insulating effect is improved, heat of the crucible is directly conducted through the magnesia filled into the periphery of the electric heating wire, the working temperature on the surface of the electric heating wire is lowered, the temperature difference between the electric heating wire and the crucible is balanced, and the service life of the electric heating wire is prolonged. The carbon fiber reinforcing ribs arranged in the crucible are adopted to effectively prevent fracture of the crucible; the degassing brick arranged on the bottom of the crucible is adopted to replace the rotor degassing procedure, the degassing effect and the degassing efficiency are improved, and energy and cost are saved.

The present invention discloses a battery safety heat management device. The battery safety heat management device comprises a cooling device, a recovery device and a safety device. The cooling devicecomprises a liquid storage cabin capable of heat conduction and attached to the surface of a battery; the recovery device comprises a diversion tube connected with the liquid storage cabin and condensation fins arranged on the diversion tube, and the liquid storage cabin contains phase-change materials; and the safety device comprises a safety cabin provided with a fire extinguishing agent and arranged at the upper portion of the battery, the inner wall of the safety cabin is made of thermal insulation materials, the bottom portion of the safety cabin is provided with buckled open holes, andthe open holes can be covered with a cover plate made of fusible materials.

The invention discloses a vehicular micro-vacuum fruit-vegetable picking field cooling device and a pre-cooling method thereof. The device comprises a micro-vacuum container and further comprises a liquid nitrogen steel cylinder, a vaporization pressure reducing device, a vacuum generator, an air storage tank and an evacuation pipe in sequential communication through an air pipe. An air suction pipe and an air return pipe are arranged on two opposite inner sides of the micro-vacuum container respectively, and the vacuum generator and the air storage tank are communicated with the air suction pipe and the air return pipe through the air pipe with a check valve and a first electromagnetic valve respectively. A second electromagnetic valve is mounted on the air pipe between the air storage tank and the evacuation pipe. The vehicular micro-vacuum fruit-vegetable picking field cooling device has advantages that short pre-cooling time and low temperature fluctuation and uniform internal temperature difference of the micro-vacuum container are realized, and instant cooling after picking can be guaranteed; safety and reliability are achieved due to adoption of nitrogen as a gas source for the cooling device, and by sensible heat and latent heat of vaporization of liquid nitrogen, unpowered power source cooling is realized, the problem of lack of electricity and power in a picking field is solved, flexibility in use of a pre-cooling device is improved, and excellent comprehensive performances and promising market prospect are realized.

A sample concentrator tube having a heat-resistant planar heating element adhered thereto, an analysis device comprising the same, and an analysis method using the same, according to the present invention, have an effect capable of precisely controlling the temperature by heating the sample concentrator tube uniformly and rapidly to a target temperature for desorption, and of desorbing an adsorbed sample almost simultaneously in any part of an adsorbent by minimizing the local temperature difference of the adsorbent in the tube. In addition, it is possible to minimize chemical noise by preventing thermal denaturation of the adsorbent caused by overheating, and there is an advantage of excellent reproducibility as well as an effect of being inexpensive, economical, and excellent in energy efficiency.

The invention discloses an annealing method for a hollow rolled object. The annealing method comprises the following steps of: horizontally placing the hollow rolled object on one side of a guide plate; arranging at least two sprayer pipes with different apertures on the guide plate; arraying the sprayer pipes into an array composed of at least two concentric circles; and starting a heating part and a fan, wherein an air outlet of the fan is located above the hollow rolled object and on the same side of the guide plate. According to the annealing method, air around the hollow rolled object is circulated in the manner of ascending central bottom and descending two sides and the airflow can directly reach a core part of the hollow rolled object through the sprayer pipes on the lateral guide plate, so that the traditional single radial heating mode is changed, the time for reaching consistent temperature inside and outside the hollow rolled object is shortened, the energy source is saved and the annealing quality of the hollow rolled object is improved.

The invention discloses a liquid cooling plate which is used for cooling a battery module, the liquid cooling plate is parallel to a first direction, one side of the liquid cooling plate along the first direction is provided with a liquid inlet port and a liquid outlet port along a second direction, and a flow channel is formed between the liquid inlet port and the liquid outlet port. The flow channel comprises a liquid inlet flow channel connected with the liquid inlet port, a liquid outlet flow channel connected with the liquid outlet port and at least two liquid separation flow channels arranged corresponding to the battery cell group, at least part of each liquid separation flow channel is coiled in a rectangular-ambulatory-plane shape, the liquid separation flow channels and the liquid inlet flow channel are intersected at a liquid separation inlet, and the liquid separation flow channels and the liquid outlet flow channel are intersected at a liquid separation outlet; each liquid separation inlet is arranged along a first direction, and each liquid separation outlet is arranged along the first direction; the lengths of the liquid separation runners are equal, and the sum of the lengths from the liquid separation inlets to the liquid inlet ports is equal to or similar to the sum of the lengths from the corresponding liquid separation outlets to the liquid outlet ports. According to the liquid cooling plate provided by the invention, the flow velocity of the liquid in each liquid separation flow channel is equal or similar, the flow velocity of the liquid in each region is relatively balanced, and the temperature of the liquid cooling plate is more balanced.

The invention discloses a thermal l management system of a commercial vehicle power battery. The thermal management system comprises a battery liquid-cooling system, a heat dissipation system and a heating system, wherein the battery liquid-cooling system comprises an ethylene glycol aqueous solution circulation system and a refrigerant circulation system, the ethylene glycol aqueous solution circulation system comprises a compensation water tank, a power battery and a first water pump, and the refrigerant circulation system comprises an expansion valve, a condenser and a compressor. The additionally-arranged heat dissipation system is connected in parallel with an engine cooling system outside an intelligent cooling management system, and an air suction type electronic fan of the intelligent cooling management system is used for blowing air and cooling; and compared with an original system, the novel power battery thermal management system has the advantages of relatively small change and more energy saving, and the battery temperature difference can be more uniform.

The present invention discloses a composite cooling thermal battery thermal management device. The device comprises a heat conduction cavity attached at the surface of a battery in a heat conduction mode, the top portion of the heat conduction cavity is divided into an air cavity and a liquid cavity by a perforated separator, the top portion of the air cavity communicates with a plurality of condensers and a cooling device used for cooling the condensers, and the liquid cavity contains a cooling liquid. The composite cooling thermal battery thermal management device disclosed in the inventioncan employ a mode of utilizing a plurality of cooling modes at the same time to perform fast cooling for the battery, balance the temperature differences of the internal portions of battery cells andbetween the battery cells, reduce the hot stack, prolong the service life of the battery and provide a good operating temperature environment for the battery cells.

The invention relates to the technical field of DC-DC converters, in particular to a current control method for a hydrogen fuel cell DC-DC converter device. The branch current acquisition module is responsible for collecting the real-time current of each phase branch and transmitting it to the DSP controller module. The branch current acquisition module, the first voltage and current sampling and short-circuit monitoring module, and the second voltage and current sampling and short-circuit monitoring module are all electrically connected to the input end of the DSP controller module, and the output end of the DSP controller module is connected to the drive module of the isolation switch tube. The energy storage element and the input terminal of the power isolation switch tube module are electrically connected; the first voltage and current sampling and short-circuit monitoring module and the second current sampling and short-circuit monitoring module are respectively responsible for collecting the voltage and current of the input terminal and the voltage and current of the output terminal, and are responsible for real-time monitoring The input and output current can quickly respond to the situation of overcurrent or short circuit in the circuit, and quickly transmit the warning signal to the DSP controller module.

The invention provides a battery thermal management system and a battery thermal management method for a vehicle, and belongs to the field of vehicles. The battery thermal management system comprisesthe following parts of a battery; a vehicle control unit for sending a power-on signal when the vehicle is powered on, and sending a power-off signal when the vehicle is powered off; an auxiliary power supply unit, which is electrically connected to the battery and configured to be charged by the battery and store power when the vehicle is powered on; and an auxiliary thermal management system, which is communicatively connected to the vehicle control unit and electrically connected to the auxiliary power supply unit, and configured to be charged by the auxiliary power supply unit and heat thebattery at a preset temperature and a preset time period when receiving the power-off signal. The invention also provides a corresponding battery thermal management method. The battery thermal management system and thermal management method provided by the invention can solve the problems of poor driving experience and short battery life in cold areas.

The invention discloses a bending type parallel flow heat exchanger, which comprises an upper end plate and a lower end plate; a plurality of parallel flat pipes are fixed between the upper end plate and the lower end plate; a plurality of parallel flow channels are arranged in the flat pipes; a refrigerant inlet and an upper drainage groove are arranged in the upper end plate, and a refrigerant outlet and a lower drainage groove are arranged in the lower end plate; and a refrigerant enters the upper drainage groove through the refrigerant inlet of the upper end plate, flows into the flat pipes, reaches the lower drainage groove in the lower end plate through the parallel flow channels in the flat pipes, then enters the flat pipes, flows to the upper end plate, reaches the upper drainage groove in the upper end plate, changes the direction, then enters the flat pipes, reaches the lower end plate and finally flows out of the refrigerant outlet of the lower end plate. The S-shaped parallel flow heat exchanger of the invention can replace a traditional parallel flow heat exchanger, the temperature difference between gas and the heat exchanger in the gas heat exchange process is more uniform, the overall performance of the heat exchanger can be effectively improved, and the heat exchange efficiency of the heat exchanger is greatly improved.

The invention discloses a method for co-producing high-purity water and salt through comprehensive utilization of brine. The method includes the following steps that a, the brine serves as a raw material, flue gas is continuously introduced, and calcium carbonate is obtained after precipitation and drying; b, a scale inhibitor is added into the softened brine, nanofiltration thick water and refined brine are obtained after nanofiltration of a nanofiltration membrane, and the nanofiltration thick water is concentrated and crystallized to obtain magnesium sulfate; c, the refined brine is concentrated through a concentration membrane assembly to obtain concentrated feed liquid; b, the concentration feed liquid obtained through the concentration membrane assembly directly enters a low-temperature steam compression and rectification device and sequentially passes through multiple vacuum flash tanks to obtain salt slurry, and the salt slurry is filter-pressed and dehydrated to obtain sodium chloride; e, condensate water in the step c and flash steam in the step d are condensed and then collected and purified to obtain high-purity water. The method is used for comprehensive utilization of the brine, calcium carbonate, magnesium sulfate, sodium chloride and other chemical products are obtained, a large amount of desalted water is by-produced, the brine is developed and utilized to the maximum degree, production efficiency is improved, and production energy consumption is reduced.

The invention provides a film pressing wheel which comprises a pipe body, a heat source arranged in the pipe body and a rubber face coated on the outer surface of the pipe body. Both the rubber face and the pipe body are controlled by an outside electric eye, both the electric eye and a heating rod are regulated and controlled by an electric control box, multiple uniformly-distributed longitudinally-penetrating through holes are formed in the pipe wall of the pipe body, a temperature controller electric eye for controlling temperature of copper pipes and the rubber face is arranged, the copper pipes and copper woven nets are arranged in the penetrating through holes, the copper pipes are filled with liquid-state water, and the rubber face on the outer surface of the pipe body is controlled by the temperature controller electric eye. The film pressing wheel is soft in temperature change, low in defective percentage, high in pressed film yield and safety and convenient in temperature regulation, and points on the rubber face are stable in temperature and small in temperature difference.