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33results about How to "Reduce the risk of freezing" patented technology
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Multi-split air-conditioning floor heating system and antifreeze control method thereof
An embodiment of the invention provides a multi-split air-conditioning floor heating system and an antifreeze control method thereof, and relates to the technical field of air conditioners. The problems that in the prior art, a refrigerant leaks due to jamming of a throttling element of a floor heating water-using module, and thus, a heat exchanger of the floor heating water-using module is damaged due to frost can be solved. The antifreeze control method comprises the following steps of: acquiring the difference between a return water temperature or an outlet water temperature of a floor heating water-using module and a refrigerant liquid tube temperature of the floor heating water-using module and the closing time of a throttling element of the floor heating water-using module; when thedifference between the return water temperature or the outlet water temperature and the refrigerant liquid tube temperature is greater than or equal to a first preset threshold value and the closing time of the throttling element is greater than or equal to a second preset threshold value, controlling a water pump of the floor heating water-using module to be started, and meanwhile controlling thethrottling element to carry out throttling at a preset opening degree; or controlling starting of a heating unit and the water pump of the floor heating water-using module. The multi-split air-conditioning floor heating system is used for antifreeze of the floor heating water-using module.
Owner:QINGDAO HISENSE HITACHI AIR CONDITIONING SYST
Fuel cell system and shutdown purging method thereof
ActiveCN113629277AExtend your lifeReduce layout complexityFuel cell heat exchangeWater management in fuel cellsConvertersTemperature control
The invention relates to a fuel cell system and a shutdown purging method thereof. The system comprises a galvanic pile, an air supply subsystem connected with a cathode of the galvanic pile, a hydrogen supply subsystem connected with an anode of the galvanic pile, a cooling circulation subsystem connected with the galvanic pile, a hydrogen / air mixing box respectively connected with the air supply subsystem and the hydrogen supply subsystem and a controller used for controlling the subsystems. The output end of the galvanic pile is connected with the driving motor by being connected with the DC / DC converter, and after the controller receives a shutdown command, in the fuel cell system shutdown process, the controller controls the temperature of the galvanic pile according to the cooling circulation subsystem and controls the actuator to correspondingly purge the interior of the galvanic pile. The method has the advantages of improving the cold start capability of the fuel cell galvanic pile at low temperature, effectively prolonging the service life of the fuel cell galvanic pile and the like.
Owner:TONGJI UNIV
Automatic anti-freezing device for power station direct air cooling unit based on louver wind shield
The invention relates to an automatic anti-freezing device for a power station direct air cooling unit based on a louver wind shield. The automatic anti-freezing device comprises temperature-measuringcables, temperature measuring points, a data monitoring and processing unit, an automatic executing mechanism and the louver wind shield. The louver wind shield is mounted at an air inlet of an air cooling fan. The multiple temperature-measuring cables are arranged on the air outlet face sides of fin radiating tube bundles, each temperature-measuring cable is internally provided with the three corresponding temperature measuring points at equal distances and connected with an input channel of the data monitoring and processing unit. When the displayed temperature of any one of the temperaturemeasuring points is excessively low, the data monitoring and processing unit judges the specific position immediately, the automatic executing mechanism closes the louver wind shield of a corresponding air cooling unit body, and thus cold air is cut off. The automatic anti-freezing device has the advantages of simple structure, low cost, short stroke time and significant air-blocking effect, theproblem that the fin radiating tube bundles of an air cooling island are frozen in winter can be effectively solved, the back pressure in winter can be reduced by about one KPa, and the heat economy of the unit is improved by 1%-2%.
Owner:SHENYANG INST OF ENG
Control method and control device of windscreen wiper, and vehicle
ActiveCN107499282AReduce the risk of freezingMeet the needs of useVehicle cleaningControl signalWindscreen wiper
The invention discloses a control method and a control device of a windscreen wiper, and a vehicle. The method comprises the steps that gear information of the vehicle and environmental information are acquired; a door lock control signal is received; and according to the gear information, the environmental information and the door lock control signal, a working state of the windscreen wiper can be controlled automatically. In this way, freezing risks of the windscreen wiper can be reduced effectively; a user's use demands can be satisfied; and the user's use experience can be improved.
Owner:BORGWARD AUTOMOTIVE CHINA CO LTD
Refrigeration equipment
PendingCN114001513AIncrease floor area ratioReduce the risk of freezingLighting and heating apparatusDomestic refrigeratorsTemperature controlEngineering
The invention provides refrigeration equipment which comprises a first chamber, a second chamber, a third chamber, a refrigeration assembly arranged in the first chamber, and an air duct assembly matched with the refrigeration assembly to supply air and return air to the second chamber and the third chamber. The air duct assembly comprises an air supply structural part for supplying air to the second chamber and the third chamber, and a first air return structural part and a second air return structural part for returning air to the second chamber and the third chamber respectively, and the first air return structural part and the second air return structural part are adjacently arranged; and the refrigeration equipment further comprises a temperature control device used for preventing the return air temperature of the first return air structural part and the return air temperature of the second return air structural part from interfering with each other. The space occupied by the return air duct can be reduced, the plot ratio of the refrigeration equipment can be improved, and the risk that the return air duct is frozen can be reduced.
Owner:CHONGQING HAIER REFRIGERATION ELECTRIC APPLIANCE CO LTD +2
Process method for producing LNG from oilfield associated gas
PendingCN111394145ASolve the poisoning failure problemReduce loadGaseous fuelsFluid removalRefrigeration compressorNatural-gas condensate
The invention provides a process method for producing LNG from oilfield associated gas. The device is characterized by comprising a feed gas buffer tank, a feed gas compressor, a feed gas cooler and the like. External feed gas enters the feed gas buffer tank through a conveying pipeline; the feed gas buffer tank is respectively connected with a wastewater output boundary pipeline, the feed gas compressor and a stable light hydrocarbon tower through conveying pipelines; the feed gas compressor is connected with a three-phase separation tank through the conveying pipeline, and the feed gas cooler is installed on the conveying pipeline. The process method is suitable for oilfield associated gas, natural gas wellhead gas, natural gas condensate gas and crude oil tank area flash steam. The stable light hydrocarbon tower is additionally arranged and used for removing most heavy hydrocarbons, the influence of the heavy hydrocarbons on a subsequent decarburization and desulfurization system and the molecular sieve dryer is reduced, the problems of oil foaming and molecular sieve poisoning failure of the amine liquid absorption tower are solved, and the loads of the cold box and the refrigeration compressor are reduced.
Owner:天津深蓝化工技术有限公司
Anti-blocking rapid spraying equipment
ActiveCN112317195AAchieve isolationAvoid problems such as burstingSpraying apparatusStructural engineeringMechanical engineering
The invention belongs to the technical field of fire-fighting equipment, and particularly relates to anti-blocking rapid spraying equipment which comprises an inner guide pipe, an outer guide pipe anda spraying head. The outer part of the inner guide pipe is sleeved with the outer guide pipe. A guide block is fixedly connected to the lower part in the outer guide pipe. The spraying head is arranged below the guide block. An adjusting hole is formed in the position, close to the spraying head, of the surface of the inner guide pipe. An adjusting block is connected to the interior of the adjusting hole in a sliding manner. Springs which are uniformly distributed are fixedly connected to the upper surface of the adjusting block. Through the equipment, isolation between a pipeline used by thespraying equipment and external environment is effectively achieved; through multi-layer structural design, the inner guide pipe is prevented from making direct contact with the external environment,the freezing risk of water in the inner guide pipe is reduced, and the problem that a transistor of the spraying head is extruded to burst is avoided; and meanwhile, through the adjusting block, theinner guide pipe and the outer guide pipe in a clogged state are directly communicated, so that the water spraying flow of the spraying head is ensured, and the fire-fighting requirement is met.
Owner:浙江继望锻造科技有限公司
Control method and device for improving reliability of air conditioner and air conditioner
ActiveCN113028574ADelay or avoid freeze protectionImprove user experienceMechanical apparatusSpace heating and ventilation safety systemsWater leakageEngineering
The invention provides a control method and device for improving the reliability of an air conditioner and the air conditioner. The control method comprises the steps that when the air conditioner is in a refrigeration or dehumidification mode, an indoor environment temperature T and an outdoor environment temperature T<outside> are detected; whether the outdoor environment temperature T<outside> is smaller than a low-temperature set temperature T<limit> or not is judged, and whether the difference value between the indoor environment temperature T and a set temperature T is smaller than a preset difference value T<difference> or not is judged; and if the outdoor environment temperature T<outside> is smaller than the low-temperature set temperature T<limit> and the difference value between the indoor environment temperature T and the set temperature T is smaller than the preset difference value T<difference>, the air conditioner is controlled to enter a low-temperature protection control mode. The control method and device can solve the technical problems of indoor unit water leakage, low detection accuracy and low control precision caused by frosting, freezing and the like during low-temperature refrigeration or dehumidification of the air conditioner.
Owner:NINGBO AUX ELECTRIC +1
Water reducing agent and preparation method thereof, antifreeze agent and use thereof, and concrete
The invention provides a water reducing agent and a preparation method thereof, an antifreeze agent and its use, and concrete, and relates to the technical field of antifreeze. The water reducing agent includes the following raw materials: prenol polyoxyethylene ether and allyl alcohol polyoxyethylene ether, and at least one of acrylic acid and maleic anhydride, wherein the prenol polyoxyethylene ether and the The molar ratio of the allyl alcohol polyoxyethylene ether is 1:(0.5-1). Antifreezes include the aforementioned water reducers and non-oxidizing salts. In the water reducing agent, isoprenol polyoxyethylene ether and allyl alcohol polyoxyethylene ether are used to synthesize the water reducing agent. Workability, when the water reducer is used in antifreeze, because the water reducer has strong early strength properties, it can effectively reduce the use of antifreeze early strength components in antifreeze; antifreeze is safe and conducive to Reducing the alkali content in concrete can effectively reduce the risk of concrete bleeding.
Owner:北京金隅节能科技有限公司 +1
Pipeline passive zero energy consumption freeze-proofing device based on PCM
PendingCN111322466AExtend your lifeReduce corrosionThermal insulationPipe heating/coolingComposite materialEngineering
The invention discloses a pipeline passive zero energy consumption freeze-proofing device based on PCM. The pipeline passive zero energy consumption freeze-proofing device based on PCM comprises a work pipe, an erosion resistant coating, a PCM layer, an embedded support, a case pipe and a heat insulation layer. The work pipe (1) is located on the innermost side; the erosion resistant coating is located on the outer side of the work pipe (1); the PCM layer (3) is located in a cavity structure between the erosion resistant layer (2) and the case pipe (5); the embedded support (4) is also locatedbetween the erosion resistant layer (2) and the case pipe (5); and the heat insulation layer (6) is attached to the outer side of the case pipe (5) and serves as the outermost layer structure. The PCM layer (3) is filled with a phase-change medium which is liquid at the room temperature; the embedded support (4) used for fixing the cavity structure between the erosion resistant coating (2) and the case pipe (5) are of a branch-shaped structure; and the case pipe (5) and the erosion resistant coating (2) provide a containing cavity for the PCM layer (3) together. The pipeline passive zero energy consumption freeze-proofing device based on PCM can achieve the technical purposes that no power facility or energy consumption is needed, the structure is simple, implementation is easy, operationand maintenance are convenient, and the requirements for energy conservation and environment protection are met.
Owner:BEIJING GENERAL MUNICIPAL ENG DESIGN & RES INST
Single-phase fluid tube-plate heat absorber loop
ActiveCN106556169AOptimize layoutReduce in quantitySolar heating energySolar heat devicesEngineeringCheck valve
The invention discloses a single-phase fluid tube-plate heat absorber loop. Each tube plate is composed of a lower header (1), an upper header (2) and heat absorbing tubes (3). The tops of the heat absorbing tubes (3) communicate with the upper header (2), and the bottoms of the heat absorbing tubes (3) communicate with the lower header (1). The plurality of heat absorbing tubes (3) are arranged in parallel on the same plane and are located in the middles of the tube plates. The heat absorber loop is formed by parallel arrangement of the plurality of tube plates, and connecting pipelines (5) with second check valves (4') and common connecting pipelines (6) are used for communicating the adjacent tube plates and are mounted between the lower headers (1) and between the upper headers (2) of the adjacent tube plates. Valves (7) are mounted on a main inflow pipeline (8), a main outflow pipeline (9) and auxiliary pipelines (10) which are connected with the heat absorber loop.
Owner:INST OF ELECTRICAL ENG CHINESE ACAD OF SCI
Underground air inlet system of indirect air cooling tower for inhibiting adverse influence of environmental wind
InactiveCN112880429AUpdraft deflectionReduced airflow deflectionTrickle coolersCooling towerPower station
The invention belongs to the field of power station air cooling technology optimization, and particularly relates to an underground air inlet system of an indirect air cooling tower for restraining adverse influence of environmental wind. The system comprises an air cooling tower cylinder, supporting columns of the air cooling tower cylinder, an air cooling radiator, a chimney, a desulfurizing tower, a cover plate, a circular-truncated-cone-shaped underground air inlet channel, a flow guide plate, a drainage ditch and an earth surface plane. The air cooling tower cylinder is supported on the lower bottom surface of the circular-truncated-cone-shaped underground air inlet channel through the supporting columns; the chimney, the desulfurizing tower and the air cooling radiator are all arranged on the lower bottom surface of the circular-truncated-cone-shaped underground air inlet channel; the whole air cooling tower cylinder is located above the earth surface plane; the whole air cooling radiator is located below the earth surface plane; the cover plate and the earth surface plane are on the same horizontal plane and are hermetically connected with the bottom of the air cooling tower cylinder; and an annular inlet plane formed by the circular-truncated-cone-shaped underground air inlet channel and the cover plate is an air inlet of the underground air inlet system. According to the underground air inlet system of the indirect air cooling tower for restraining the adverse influence of the environmental wind, the negative influence of environmental wind on the cooling performance of the air cooling radiator can be restrained, and the summer-keeping and anti-freezing performance of the indirect air cooling system is improved.
Owner:NORTH CHINA ELECTRIC POWER UNIV (BAODING)
Distributed thermal energy storage system
ActiveCN106247621BReduce design difficultyReduce the risk of freezingHeat storage plantsStorage heatersMolten saltProcess engineering
Owner:JIANGSU XINCHEN SOLAR THERMAL TECH CO LTD
Anti-lightning and anti-freezing system having safety early-warning function and used for water tank
InactiveCN106193198AReduce the risk of freezingTo achieve lightning protectionWater supply tanksAnti freezingSolenoid valve
The invention discloses an anti-lightning and anti-freezing system having a safety early-warning function and used for a water tank. The system comprises the water tank, a heat insulating layer, a metal net layer, an insulating protection layer, a grounding wire, a grounding device, a water tank water outlet, a water pipe, a water pipe water outlet, a solenoid valve, leads, an anti-lightning module and a warning device, wherein the outer side of the water tank is covered with the heat insulating layer, the outer side of the heat insulating layer is covered with the metal net layer, the outer side of the metal net layer is covered with the insulating protection layer, the grounding device is connected with the metal net layer through the grounding wire, the water pipe is connected with the water tank water outlet, the solenoid valve is arranged on the water pipe, the anti-lightning module is connected with the metal net layer and the solenoid valve through the leads, and the warning device is integrally connected with the anti-lightning module. The anti-lightning and anti-freezing system has the early-warning function and can improve the resident use safety of the anti-lightning and anti-freezing roof water tank.
Owner:安徽亿纵电子科技有限公司
Equipment passive zero energy consumption freeze-proofing device based on PCM
PendingCN111322895AMaterial changeableImprove environmental adaptabilityHeat storage plantsFire rescueThermodynamicsInsulation layer
The invention discloses an equipment passive zero energy consumption freeze-proofing device based on PCM. The equipment passive zero energy consumption freeze-proofing device based on PCM comprises anequipment shell, an embedded support, a PCM layer, an inner protection layer, a heat insulation layer, an outer protection layer and fireproof paint. The equipment shell (1) is located on the innermost side; a liquid phase-change material of the PCM layer (2) is contained in a cavity structure between the equipment shell (1) and the inner protection layer (4); the embedded support (3) is locatedbetween the equipment shell (1) and the inner protection layer (4), and a cavity structure is formed; the heat insulation layer (5) is attached to the outer side of the protection layer (4), and the inner protection layer (4) provides supporting for the heat insulation layer (5); the outer protection layer (6) is fixed to the outer side of the heat insulation layer (5); the fireproof paint (7) coats the outer side of the outer protection layer (6); and the PCM layer (2) is filled with a phase-change material which is liquid at the room temperature. The equipment passive zero energy consumptionfreeze-proofing device based on PCM achieves the technical purpose that freeze-proofing protection can be carried out on equipment under the premise of no power facility or energy consumption; and meanwhile achieves the technical purposes that the equipment structure is simple, implementation is easy, operation and maintenance are convenient, and the requirements for energy conservation and environment protection are met.
Owner:BEIJING GENERAL MUNICIPAL ENG DESIGN & RES INST
Control device for internal combustion engine
ActiveCN110662895AEmission reductionAvoid damageExhaust gas recirculationEngine controllersExhaust gas recirculationActuator
The invention relates to a control device (10) for an internal combustion engine, comprising an exhaust gas recirculation channel (18), an air suction channel (14) into which the exhaust gas recirculation channel (18) enters, a valve seat (34) embodied on a mouth (30) at the end of the exhaust gas recirculation channel (18), and a valve disk (58) that can be placed on the valve seat (34) by meansof an actuator such that the mouth (30) of the exhaust gas recirculation channel (18) can be closed. The valve seat (34) and / or the valve disk (58) form an at least single-curved concave surface (64,74), and the valve disk (58) is elastic.
Owner:PIERBURG GMBH & CO KG NEUSS
Anti-clogging quick spray equipment
ActiveCN112317195BAchieve isolationAvoid problems such as burstingSpraying apparatusFire protectionSprayer
The invention belongs to the technical field of fire-fighting equipment, in particular anti-clogging fast spray equipment, comprising an inner conduit, an outer conduit and a spray head; the outer conduit is sleeved on the outside of the inner conduit; A guide block is connected; a spray head is provided under the guide block; an adjustment hole is opened on the surface of the inner conduit close to the position of the spray head; an adjustment block is slidably connected to the inside of the adjustment hole; the adjustment block Evenly arranged springs are fixed on the upper surface of the upper surface; through the present invention, the effective isolation between the pipeline used in the spray equipment and the external environment is effectively realized, and the multi-layer structure design avoids direct contact between the inner conduit and the external environment , reduce the risk of freezing of water inside the inner conduit, avoid problems such as the transistor of the sprinkler head being squeezed and bursting, and at the same time, through the adjustment block, the inner conduit and the outer conduit in the silted state are directly connected, thus ensuring the sprinkler head. The flow rate of water spray meets the requirements of fire protection.
Owner:浙江继望锻造科技有限公司
Temperature control method of air-cooled condenser
PendingCN111735320ASteady decrease in temperatureReduced risk of freezingSteam/vapor condensersTemperature controlEngineering
The invention discloses a temperature control method of an air cooling condenser, and belongs to the field of condenser freezing prevention. According to the temperature control method provided by theinvention, air regulating devices of a plurality of cooling triangular units distributed on the 1 / 6-1 / 8 circumference of the windward side and the circumference circumference which is in central symmetry with the windward side are closed one by one according to the influence of the ambient wind on the heat dissipating capacity of air-cooled condenser at different positions around a tower when thetemperature of a condensation water pipe is lower than a set value, and steam inlet pipe valves of the cooling triangle units are closed, so that the temperature of condensation water can be rapidlyincreased, the heat dissipation amount of a heat dissipation unit is balanced, and the freezing risk is reduced; and when the temperature of the condensation water pipe of the air cooling condenser ishigher than a set value, the steam inlet pipe valves of a group of cooling triangle units distributed on the windward side and the circumference which is in central symmetry with the windward side are opened one by one, and then the opening degree of the air adjusting devices corresponding to the cooling triangle units is gradually increased until all the cooling triangle units are put into operation according to the steps or the temperature of the condensation water pipe is lower than the set value, the condensation water temperature is stably reduced.
Owner:陕西榆林能源集团杨伙盘煤电有限公司 +1
A single-phase fluid tube-plate heat absorber circuit
ActiveCN106556169BOptimize layoutReduce in quantitySolar heating energySolar heat storageCheck valveEngineering
The invention discloses a single-phase fluid tube-plate heat absorber loop. Each tube plate is composed of a lower header (1), an upper header (2) and heat absorbing tubes (3). The tops of the heat absorbing tubes (3) communicate with the upper header (2), and the bottoms of the heat absorbing tubes (3) communicate with the lower header (1). The plurality of heat absorbing tubes (3) are arranged in parallel on the same plane and are located in the middles of the tube plates. The heat absorber loop is formed by parallel arrangement of the plurality of tube plates, and connecting pipelines (5) with second check valves (4') and common connecting pipelines (6) are used for communicating the adjacent tube plates and are mounted between the lower headers (1) and between the upper headers (2) of the adjacent tube plates. Valves (7) are mounted on a main inflow pipeline (8), a main outflow pipeline (9) and auxiliary pipelines (10) which are connected with the heat absorber loop.
Owner:INST OF ELECTRICAL ENG CHINESE ACAD OF SCI
Antifreeze system and cooling water temperature control method for natural ventilation cooling tower
ActiveCN110793378BReduce the risk of freezingSafe and stable operationHeat exchange apparatusCold seasonCooling tower
The invention discloses an anti-freezing system of a natural draft cooling tower and a cooling water temperature controlling method. The anti-freezing system of the natural draft cooling tower comprises a cooling tower body and a fin-tube type air-water heat exchange system. The fin-tube type air-water heat exchange system comprises air deflectors, fin-tube type air-water heat exchangers, louver type adjusting dampers and a temperature monitoring module. The air deflectors divide an air intake cavity into air heater areas and non-heating areas which are alternate. The fin-tube type air-water heat exchangers are arranged in the air heater areas, and the heat ends of the fin-tube type air-water heat exchangers are connected with a heat cycle water phase of a steam condenser of a steam turbine generator set through water inflow adjusting valves. Air inlets of each air heater area and each non-heating area are both the louver type adjusting dampers controlled by drive motors. The temperature monitoring module comprises an air temperature sensor and a cooling water temperature sensor. The anti-freezing system of the natural draft cooling tower effectively solves the anti-freezing safetyproblem in cold seasons of the natural draft cooling tower and enables the outlet water temperature of the cooling tower to be controlled according to the optimal parameters of cold end optimized operation of the set, and therefore the environmental resources are fully utilized to improve the economical efficiency of set operation.
Owner:SOUTHEAST UNIV
Absorption refrigeration unit and control method
PendingCN111503930AReduce the risk of freezingLower control costsEnergy efficient heating/coolingClimate change adaptationEngineeringRefrigeration
The invention provides an absorption refrigeration unit and a control method. According to the absorption refrigeration unit and the control method, through detection of the volume of dilute solutionsin an evaporator with a detection component, since solutes contained in the dilute solutions are unchanged, and if the volume is decreased, it is considered that the concentration of the dilute solutions in the current state is improved compared with the initial concentration; if the volume is increased, it is considered that the concentration of the dilute solutions in the current state is reduced compared with the initial concentration, so that the quantity of refrigerants returning to the evaporator from a condenser is regulated through a regulating component properly; thus, the dilute solutions in the evaporator are maintained in a preset volume range; and in this way, it can be ensured that the concentration of the dilute solutions in the evaporator is constant in a concentration range of a certain demand all the time. The refrigeration unit is lower in use cost, and is not easily disturbed by solution impurities; the control is reliable, and it can be ensured that the refrigeration unit safely runs in the fixed range of the specific gravity of the refrigerants with no need of measuring the specific gravity of the refrigerants.
Owner:YANTAI EBARA AIR CONDITIONER
A water pump and unit operation control method, device and water pump system
ActiveCN110425123BReduce the risk of freezingReduce economic lossPump controlRefrigeration safety arrangementWater flowEnvironmental engineering
The invention relates to a water pump and unit operation control method and device and a water pump system. The water pump and unit operation control method comprises the following steps that operation parameter information of a water pump and a unit are acquired before and after water flow switch protection is generated, according to the operation parameter information of the water pump and the unit, the water flow condition is determined when the water flow switch protection is generated, and the operation state of the water pump and the operation state of the unit are controlled according to the water flow condition. By adopting the water pump and unit operation control method, the water flow condition during water flow switch protection can be effectively distinguished, the unit and the water pump are controlled to adopt different operation strategies based on the different water flow conditions, the control method can enable the unit to be started and operate in an anti-freezing mode under the premise that the unit is not damaged, the risk of freezing of the unit in winter is reduced, and the economic loss of users is reduced.
Owner:GREE ELECTRIC APPLIANCES INC
A new configuration method of incubator
InactiveCN102490990BFlexible temperature controlGuaranteed preservationShock-sensitive articlesSoftware engineeringIsolation layer
The invention relates to a novel method for configuring a heat preservation box. The method comprises the following steps of: (1) setting a heat preservation box configuration table; (2) determining conditions when an object to be subjected to heat preservation is transported; (3) selecting a corresponding configuration scheme according to the set heat preservation box configuration table, and determining the type and the number of a coolant, a treatment method and an assembly method; and (4) boxing the coolant and the object to be subjected to heat preservation according to the heat preservation box configuration table, and preparing for transportation, wherein the heat preservation box comprises a box body, a box cover and a box bottom; four side faces of the box body have double-layer structures; the outer layer of each side face is a heat preservation layer, and the inner layer of each side face is an isolation layer; and an insertion slot is formed between the inner layer and the outer layer. According to the novel method for configuring the heat preservation box, the temperature of the heat preservation box can be controlled flexibly according to a requirement instead of being influenced by the season and the change of the ambient temperature; furthermore, medicines and the coolants can be separated from each other; the coolants are put at fixed positions; the coolants and the medicines are easy to package; therefore, the storage or transportation safety of the medicines is guaranteed effectively.
Owner:SHANGHAI VISION INDS
A multi-connected air-conditioning floor heating system and its antifreeze control method
Embodiments of the present invention provide a multi-connected air conditioning floor heating system and an antifreeze control method thereof, which relate to the technical field of air conditioning and can solve the problem of refrigerant leakage in the prior art due to the jamming of the throttling element of the floor heating water module, which in turn causes the failure of the floor heating water module. The problem of heat exchanger being frozen. The antifreeze control method includes: obtaining the difference between the return water temperature or the outlet water temperature of the floor heating water module and the refrigerant liquid pipe temperature of the floor heating water module, and the closing time of the throttling element of the floor heating water module; when the return water temperature or the outlet water temperature When the difference between the temperature of the refrigerant liquid pipe and the refrigerant liquid pipe is greater than or equal to the first preset threshold, and the closing time of the throttling element is greater than or equal to the second preset threshold, the water pump of the floor heating water module is controlled to be turned on, and the throttling element is controlled to the preset value. Throttle the opening; or, control the opening of the water pumps of the heating unit and floor heating water module. The invention is used to prevent freezing of floor heating water modules.
Owner:QINGDAO HISENSE HITACHI AIR CONDITIONING SYST
Method for recovery of ethane from carbon dioxide-containing natural gas
InactiveCN109534945AHigh recovery rateReduce energy consumptionHydrocarbonsAbsorption purification/separationGas phaseCooling capacity
The invention discloses a method for recovery of ethane from carbon dioxide-containing natural gas. On the basis of expander refrigeration-partial dry gas circulation process, the absorption principleof propane and butane based liquid hydrocarbon to CO2 is applied in a low temperature separation process, part of feed gas and part of the liquid phase in a low temperature separator are mixed and undercooled to enter the middle-upper part of a demethanation tower, part of outward transportation gas flows back and is mixed with part of the liquid phase in the low temperature separator, then the mixture enters the top of the demethanation tower after undercooling, thus increasing the content of propane and butane based liquid hydrocarbon at the middle-upper part of the demethanation tower, lowering the concentration of CO2 in a demethanation tower tray gas phase, and strengthening the ability of an ethane recovery device in inhibiting CO2 solid formation. At the same time, the method increases the cooling capacity at the middle-upper part of the demethanation tower, and enhances the ethane recovery rate. The method strengthens the ability of the demethanation tower in inhibiting CO2 solid formation, also increases the ethane recovery rate, effectively improves the economic benefits of the ethane recovery device operation, and is suitable for ethane recovery devices with a feed gasCO2 content greater than 0.5%.
Owner:SOUTHWEST PETROLEUM UNIV +1
Antifreeze method and device for water-cooled screw unit and water-cooled screw unit
ActiveCN107192184BReduce the risk of freezingCompression machines with non-reversible cycleRefrigeration safety arrangementAnti freezingWater flow
Owner:CHONGQING MIDEA GENERAL REFRIGERATING EQUIP +1
Wiper control method, device and vehicle
ActiveCN107499282BReduce the risk of freezingMeet the needs of useVehicle cleaningAutomatic controlControl signal
Owner:BORGWARD AUTOMOTIVE CHINA CO LTD
Integrated device and operation method for efficiency enhancement and antifreeze of photothermal assisted indirect air cooling tower
ActiveCN112444141BImprove cooling effectReduce antifreeze pressureSolar heating energySolar heat collectors with working fluidsCooling towerEngineering
The invention provides an integrated device and operation method for efficiency enhancement and antifreeze of a photothermal assisted indirect air cooling tower, which includes a multi-flow transparent air duct with a heat storage medium inside, the outlet of which is connected to the inlet of a tapered pipe, and the outlet of the tapered pipe passes through The connecting pipe is connected to the inlet of the air supply pipe. The air supply pipe includes two air outlet branches. The first air outlet is located inside the indirect air cooling tower, close to the inner wall of the indirect air cooling tower, and the air outlet direction is obliquely upward. The second air outlet is located in the air cooling cooling tower. Above the triangular area formed by the device and the louvers, the air outlet direction is vertically downward; it also includes a first temperature sensor, a second temperature sensor and a third temperature sensor, respectively measuring the air temperature T inside the indirect air cooling tower a1 , Air temperature T at the air inlet of the air-cooled radiator a2 , The air temperature T before the bifurcation of the two outlet branch pipes of the air supply duct a3 . The invention can not only improve the cooling capacity of the indirect air-cooling tower under the summer working condition, but also reduce the antifreezing pressure of the radiator of the indirect air-cooling tower under the winter working condition.
Owner:SOUTHEAST UNIV +1
A molten salt heat storage system and heat exchange method for solar thermal power plants
ActiveCN109654756BReduce the risk of freezingRaise the temperature of the molten saltSolar heating energyFrom solar energyPower stationMolten salt
The present invention provides a molten salt heat storage system for a solar thermal power station, the molten salt heat storage system comprising: a high temperature molten salt storage tank (1), a mixer (7), a preheater (4), Low-temperature molten salt storage tank (2), mirror field (13) and multiple pipelines; the technical solution provided by the present invention uses a mixer to mix the high-temperature molten salt in the high-temperature molten salt storage tank with the low-temperature molten salt at the outlet of the steam generator , which increases the temperature of the molten salt entering the inlet of the preheater and reduces the risk of freezing of the preheater due to factors such as load adjustment and the environment; The salt is mixed, which increases the temperature of the molten salt flowing into the mirror field pipeline, increases the margin for safe operation of the molten salt in the mirror field circuit at night, and reduces the risk of molten salt freezing in the mirror field circuit. The technical scheme provided by the invention reduces the self-consumption power for heat tracing of a photothermal power plant and improves the economic benefits of the power plant.
Owner:中国葛洲坝集团装备工业有限公司
Water level interlocking control system in air-cooled photo-thermal unit and interlocking control method thereof
PendingCN110195961APrevent freezingWarranty requirementsLighting and heating apparatusCooling fluid circulationAnti freezingCooling tower
The invention discloses a water level interlocking control system in air-cooled photo-thermal unit and an interlocking control method of the water level interlocking control system in the air-cooled photo-thermal unit, and belongs to the field of solar energy development and utilization. According to the interlocking control method of the water level interlocking control system in the air-cooled photo-thermal unit, when the control system normally operates, circulating water in auxiliary machine equipment enters a branch where a cooling fan section is located through an auxiliary machine cooling water pipe, enters a corresponding cooling fan section through a valve on the branch and is cooled in the cooling fan section, and the cooled circulating water enters the auxiliary machine equipment again through an auxiliary machine return water pipe; and when the water temperature is lower than the preset temperature, cooling water in an auxiliary machine dry cooling tower flows back to a water storage tank from a first inlet through an outlet of the corresponding cooling fan section, and circulating water in the auxiliary machine cooling water pipe enters the water storage tank from a second inlet. According to the interlocking control method, the system anti-freezing hidden danger caused by frequent startup and shutdown of the photo-thermal unit is greatly reduced, and operation safety of equipment is improved.
Owner:NORTHWEST ELECTRIC POWER DESIGN INST OF CHINA POWER ENG CONSULTING GROUP
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