35results about How to "Reduce heat consumption" patented technology

The invention relates to the technical field of multi-energy complementary power generation, and discloses an industrial steam supply peak shaving system and method coupling fused salt heat storage and solar energy, and the industrial steam supply peak shaving system comprises a coal-fired power generation system and an industrial steam supply system; in the heat storage mode, the boiler, the steam cooler and the condenser are sequentially connected; in the heat release mode, the high-pressure heater, the primary feed water heater and the low-pressure cylinder are sequentially connected through pipelines; and the feed pump, the secondary feed water heater and the boiler are connected in sequence. In the low ebb of the electrical load, solar energy is used for heating fused salt to store heat, and part of high-temperature steam is extracted from steam-water circulation of the improved coal-fired power generation system to store the heat in a heat storage device and does not enter a steam turbine for power generation; the power load output is adjusted by adjusting the thermal load output of the thermodynamic system in the power generation process, and load decoupling of the boiler and the steam turbine is achieved. And in the electrical load peak, the stored heat energy is released back to steam-water circulation, and the electrical load of the coal-fired power generation system is increased.

The utility model discloses a high-temperature silicon carbide reactor which comprises a lower sealing head, a first tube plate, a feeding tube box, a second tube plate, a SiC inner tube and a SiC outer tube, a discharging opening is formed in the lower sealing head, a feeding opening is formed in the feeding tube box, the SiC inner tube and the first tube plate are sealed through a first sealing assembly, and the second tube plate is connected with the second tube plate through a second sealing assembly. The SiC outer pipe and the second pipe plate are sealed through a second sealing assembly, the heat exchange section pipe box is arranged above the second pipe plate, the reaction section pipe box is arranged above the heat exchange section pipe box, the SiC inner pipe is sleeved with the SiC outer pipe, the lower end of the SiC outer pipe is communicated with the feeding pipe box, the upper end of the SiC outer pipe is arranged in the reaction section pipe box, and the lower end of the SiC outer pipe is communicated with the reaction section pipe box. The upper end face of the SiC outer pipe is higher than the upper end face of the SiC inner pipe, the upper end of the SiC inner pipe is arranged in the reaction section pipe box, a material conveying channel is formed between the SiC inner pipe and the SiC outer pipe, and a heating device for heating the SiC outer pipe is arranged in the reaction section pipe box.

The invention belongs to the technical field of thermal engineering of inorganic non-metallic materials, and particularly relates to a method for controlling the color of high-iron-content calcined clay. The method comprises the following steps: 1) crushing, drying and grinding a clay raw material to prepare a micron-sized powdery raw material, adding a CaO powdery material, and uniformly mixing; 2) feeding the mixed material into a connecting pipeline between a first-stage cyclone cylinder and a second-stage cyclone cylinder; and the materials are dispersed in the high-temperature flue gas at the outlet of the second-stage cyclone cylinder through a material scattering device arranged at the position in the connecting pipeline. By adopting the method, the atmosphere in the calcining and cooling stages does not need to be complexly controlled, and the technological process is simple. In the cooling stage, heat of high-temperature calcined clay can be efficiently recycled through ambient air, the recycled high-temperature air serves as combustion-supporting air for fuel combustion in the decomposing furnace, heat consumption is greatly reduced, and when the content of iron in the clay is higher than 5%, the calcined clay can also be kept gray.

The invention provides a satellite platform and load multi-dimensional nonlinear cooperative intelligent thermal management method and system. The method comprises the following steps: establishing a relation model; according to the relation model, constructing a satellite platform and load multi-dimensional nonlinear cooperative intelligent thermal management model; and solving the nonlinear collaborative intelligent thermal management model. According to the method, under the constraint of a load set working mode, load heat consumption and a whole-satellite thermal control heater are subjected to collaborative optimization adjustment in a time domain dimension, and the start-up time sequence and the start-up duration of a satellite load single machine and the thermal control heater serve as adjustment variables of whole-satellite thermal management at the same time; the advantages that the dynamic response of the load single-machine temperature to the load heat consumption is faster than that of a thermal control compensation heater and the steady-state response amplitude is larger are fully utilized, and compared with a conventional satellite thermal management method, the whole satellite thermal management adjustment is faster, the consumption of resources such as power consumption is smaller, and the stability is higher. And the minimization of the heating compensation power consumption of the thermal control subsystem in the power utilization peak periods such as the earth shadow period and the month shadow period is realized.

The utility model relates to a double-hearth shaft kiln with an auxiliary nozzle. The auxiliary nozzle comprises a bottom nozzle and a channel nozzle, the two bottom nozzles are installed on supporting seats arranged in the centers of the bottoms of the two kiln chambers respectively, and spraying openings of the bottom nozzles extend to the bottom of the roasting zone. The multiple channel nozzles are installed on the top and the side portion of the center position of the connecting channel respectively. The working mode that a traditional double-hearth shaft kiln carries out full parallel flow roasting in a roasting kiln hearth and carries out countercurrent heat storage in a heat storage kiln hearth, namely the working mode of'full parallel flow roasting and countercurrent heat storage 'is changed into the working mode that parallel flow roasting is carried out in the roasting kiln hearth and countercurrent roasting and heat storage are carried out in the heat storage kiln hearth. The two-way roasting working mode of parallel-flow roasting, counter-flow roasting and heat storage is adopted, cooling air participates in combustion supporting, then a low-temperature airflow area where roasting belt materials of a heat storage kiln chamber are cooled is eliminated from the source, and the productivity and the product quality are improved.

The invention discloses a low-heat-consumption transceiver module co-packaged by photoelectric chips. The low-heat-consumption transceiver module comprises a cover plate, an electro-optical modulation chip, a monitoring photoelectric detection chip, a receiving photoelectric detection chip, a first base, a second base, a control chip, a transimpedance amplification chip, a bottom plate, a tube shell, a first input optical fiber, a second input optical fiber and an output optical fiber, a top cavity and a first bottom cavity are sequentially arranged on the first base from top to bottom in the vertical direction, and an electro-optical modulation chip and a receiving photoelectric detection chip are bonded in the top cavity. The electro-optical modulation chip, the receiving photoelectric detection chip and the corresponding matched chips are subjected to co-packaging design, the integration level and the high-frequency performance are improved, transmission of receiving and transmitting radio-frequency signals, control signals, state signals and the like can be carried out through welding of the bottom plate solder balls and an external printed board, switching of a radio-frequency connector is avoided, and the cost is reduced. The passive devices and the active devices in the module are welded in a layered and cavity manner, so that the space in the vertical direction is fully utilized, and heat dissipation layout is reasonably performed.

The invention provides a surge eliminating circuit capable of being used for a satellite-borne refrigerator power supply input port. A carrier wave generating circuit generates a fixed-frequency periodic carrier wave; the modulating wave generating circuit generates output voltage which rises according to an exponential rule through charging and discharging and serves as a modulating wave. The comparison driving circuit compares the periodic carrier waves with the modulation waves rising according to the exponential law to generate a pulse sequence with the duty ratio gradually increased, the pulse sequence is applied to a grid electrode of the surge suppression MOS tube, and then the surge suppression MOS tube is controlled to slowly charge an L-C array at the rear stage of a satellite-borne refrigerator power supply. According to the invention, the surge current at the start-up moment can be suppressed, and the surge current impact of the L-C array on the bus at the start-up moment is reduced to the greatest extent.

The invention provides a resonant converter parameter optimization method and system of an electric vertical take-off and landing aircraft, and relates to the technical field of aviation power electronics. The method comprises the following steps: constructing an improved equivalent circuit model containing transformer secondary side leakage inductance; deriving a voltage gain function expression of the improved equivalent circuit model and an optimization calculation formula of the excitation inductance required for realizing the soft switching; parameter optimization is carried out based on the voltage gain function expression and the excitation inductance optimization calculation formula; and building an LLC resonant converter experimental prototype according to the optimized parameters, and carrying out system verification and performance evaluation. According to the invention, the problem of performance reduction caused by neglecting secondary side leakage inductance under a high-frequency working condition in a traditional design is solved, the efficiency, the voltage stabilization precision and the power density of the converter are remarkably improved, and the high requirement of eVTOL on an airborne power supply is met.

The present invention discloses a device for recycling waste heat on the surface of a rotary kiln, comprising a heat absorbing device, a plate air inlet, a fan and a burner; the heat absorbing device is used to recover waste heat at the baffle belt, and is symmetrically arranged on both sides of the baffle belt; the plate air inlet is used to recover waste heat on the surface of the rotary kiln, and can move to the highest temperature point on the surface of the rotary kiln; the heat absorbing device is connected to the fan through a fixed air duct, and the plate air inlet is connected to the fan through an adjustable air duct; the fan is connected to the burner; the heat absorbing device comprises a flow guide, a heat pipe flow guide and a baffle, the flow guide is used to guide the hot air in the tangential direction of the rotary kiln into the heat absorbing device, the heat pipe flow guide is used to absorb the radiant heat from the surface of the rotary kiln and heat the passing air, and the baffle is provided with barbs that can block the entry of low-temperature air. The present invention also discloses a method for recycling waste heat on the surface of a rotary kiln. The present invention has a simple structure, is easy to install and maintain, has a low cost, has a high waste heat utilization rate, and is suitable for popularization and application.

The invention discloses a process and a device for improving the flash point of waste tire pyrolytic oil, and relates to the technical field of the flash point of the waste tire pyrolytic oil. The system comprises a raw material pump, a raw material heavy oil heat exchanger, a heavy oil pump, a raw material flue gas heat exchanger, a rotary heating evaporator, a horizontal storage tank, a vertical tower, a tower top water cooler, a receiving tank, a light oil delivery pump, a water cooler and a tower top return pipeline. According to the process flow and the device, the flash point of the heavy oil can be controlled between 45 and 70, the additional value of the tire pyrolytic oil can be improved, the economic benefit is remarkable, the original heating furnace is modified, the spray head is additionally arranged in the rotary heating evaporator, and after the tire pyrolytic oil passes through the spray head, the flash point of the heavy oil can be controlled between 45 and 70. Light components sprayed to the furnace wall of the rotary heating evaporator in an atomized mode are instantly gasified, heavy components enter the lower portion of the rotary heating evaporator heating furnace, and along with continuous feeding, the liquid level reaches the section of a discharging opening of the rotary heating evaporator heating furnace, and the heavy components are automatically discharged into the tank.

The present invention relates to a pyrolysis and re-combustion system and method for waste fan blades based on coal-fired power plants, wherein the system includes a feeder, a crusher, a gas-liquid separation tower, a pyrolysis reactor, an oil storage tank, a gas storage tank, a flue gas mixing and temperature control device, a burner, and a waste bin. The present invention uses the flue gas at the outlet of the boiler reheater and the inlet of the economizer of the coal-fired power plant as the system startup and temperature control heat source, thereby realizing the temperature control of the pyrolysis reactor; the combustible gas generated by the pyrolysis of the fan blades is directly used for heating the pyrolysis reactor, thereby achieving energy-saving effects; the excess combustible gas is stored and used for re-combustion of the inlet flue of the SCR reactor during the peak-shaving process of the coal-fired unit, thereby avoiding the problem of catalyst channel blockage during the peak-shaving process; the oil substances generated by the pyrolysis of the fan blades are stored and put into the coal-fired boiler furnace for combustion during the peak-shaving process of the coal-fired unit, thereby stabilizing the boiler furnace combustion under low-load conditions, ensuring full utilization of the pyrolysis products, and realizing full recovery of energy.

The present invention provides a preparation method and application of sea cucumber peptides, belonging to the field of marine biotechnology. The present invention improves the extraction process of sea cucumber peptides, and adopts a method of biological enzymatic hydrolysis plus low-temperature vacuum cooking, which can not only effectively reduce the loss of heat-sensitive vitamins, polysaccharides, and trace elements, and keep the nutritional components of sea cucumbers as much as possible, but more importantly, it can make the sea cucumber peptides have a better flavor. As the cooking temperature decreases, the protein and fat denaturation in the peptide powder is also reduced to a certain extent, which can reduce the flocculation precipitation caused by protein denaturation and the poor sensory perception caused by lipid denaturation of the peptide powder during the product utilization period; finally, it can also improve the extraction rate of sea cucumber peptides, reduce heat energy consumption, and reduce processing costs. It has been proven that the marine active peptide energy drink based on sea cucumber peptides has good flavor, stable shelf life and no precipitation, and is suitable for wide application in beverage products.

This invention discloses an absorption-compression high-temperature heat pump system with liquid injection enthalpy enhancement, relating to the field of high-temperature heat pump technology. It includes a heating subsystem and a liquid injection enthalpy enhancement refrigerant pressurization subsystem connected by pipelines. The liquid injection enthalpy enhancement refrigerant pressurization subsystem includes a condenser, evaporator, compressor, refrigerant flow control valve, second liquid pump, and third liquid pump connected together. The heating subsystem includes a generator, absorber, solution throttling valve, first liquid pump, first heat exchanger, and third heat exchanger connected together. The third heat exchanger is connected to the second heat exchanger, and the second heat exchanger is connected to the fourth liquid pump. This invention, employing the above-described absorption-compression high-temperature heat pump system with liquid injection enthalpy enhancement, combines a second-type absorption heat pump with a liquid injection enthalpy enhancement refrigerant pressurization subsystem to increase absorber pressure, achieving a large temperature rise comparable to two-stage or multi-stage second-type absorption heat pumps under low-temperature heat source conditions.

The utility model provides a combustion-supporting air constant-temperature and constant-pressure control device for a glass kiln. The combustion-supporting air constant-temperature and constant-pressure control device comprises a combustion-supporting air pipeline, a natural air pipeline, a temperature measuring device, a pressure measuring device and a DCS control system. The combustion-supporting air pipeline is arranged below the bottom of the glass kiln and comprises at least two hot air collecting pipe bodies, a hot air gathering pipe body and an air supply pipe body which are communicated with each other. The natural air pipeline is communicated with the hot air gathering pipe body, and a fluid control device is installed at an air inlet of the natural air pipeline. And the temperature measuring device is arranged in the air supply pipe body and is adjacent to the air inlet of the glass kiln. And the pressure measuring device is arranged in the air supply pipe body and is adjacent to the air inlet of the glass kiln. The DCS control system is in communication connection with the temperature measuring device, the pressure measuring device and the fluid control device. According to the invention, the temperature of combustion-supporting air is increased, the heat required for heating to the same flue gas temperature is reduced, the continuous and constant air temperature and air pressure are effectively ensured, the flame combustion stability is enhanced, the glass quality is improved, and the heat consumption of the melting furnace is reduced.

The present invention discloses a high-efficiency absorption heat pump, including a cooling tower, a condenser, an evaporator, an absorber, a solution heat exchanger, a high-pressure generator, a gas-liquid separator, a low-pressure generator, a subcooler and a liquid reservoir. The evaporator and the subcooler are connected to the liquid reservoir, the liquid reservoir is respectively connected to the evaporator and the subcooler, the absorber is connected to the low-pressure generator, and the high-pressure generator, the solution heat exchanger and the gas-liquid separator form a gas-liquid separation structure and a liquid circulation structure. The present invention realizes the advantages of energy utilization efficiency of traditional absorption refrigerants, and combines the water pipelines of the evaporator and the subcooler to operate in parallel; internal energy ladder cooling is achieved through a heat exchanger, and the unit cooling capacity is increased through a subcooler. Finally, heat recovery is used to improve the overall energy efficiency and system utilization. The heat of the concentrated solution can be transferred to the dilute solution through three groups of heat exchangers, which reduces the equipment investment required for cooling and reduces the heat consumption of heating the dilute solution.

The application belongs to the field of cellulose ethers, and embodiments provide a sodium carboxymethyl cellulose and a preparation method and a dust suppressant thereof. The method comprises the following steps: mixing cellulose, a solid base and a solid etherifying agent to obtain a first mixture; adjusting the humidity of the first mixture by using a humidity adjusting medium to obtain a flowable wet powder body; mechanically activating the wet powder body to obtain a second mixture; performing a heating treatment on the second mixture to cause the second mixture to undergo an alkalization reaction and an etherification reaction; performing a neutralization treatment on the obtained heating treatment product to obtain a neutral mixture; and sequentially performing a dissolution treatment and a purification treatment on the neutral mixture to obtain the sodium carboxymethyl cellulose. The method of the embodiments of the application does not require a large amount of organic solvents such as isopropyl alcohol, thereby reducing the generation of waste liquid and significantly reducing the environmental disposal cost and production safety risk.

The invention relates to the technical field of spaceflight space electric propulsion, in particular to a multi-working-medium self-adaptive high-power Hall thruster hybrid magnetic circuit assembly which comprises a magnetic conductive column, permanent magnet rings, excitation coils and a magnetic conductive base, the magnetic conductive column comprises an inner magnetic conductive column and an outer magnetic conductive column, and the permanent magnet rings comprise an inner permanent magnet ring and an outer permanent magnet ring; the magnet exciting coil comprises an inner magnet exciting coil and an outer magnet exciting coil; the inner permanent magnet ring and the inner excitation coil are coaxially arranged on the inner magnetic conductive column to form an inner excitation group; the outer permanent magnet ring and the outer excitation coil are coaxially arranged on the outer magnetic conductive column to form an outer excitation group; the inner excitation group and the outer excitation group are both arranged on the magnetic conductive base, and the outer excitation group is symmetrically distributed in the circumferential direction of a central shaft ring of the Hall thruster. According to the Hall thruster, two excitation modes of a permanent magnet and an electric excitation coil are combined, so that the Hall thruster can obtain an adjustable magnetic field with high magnetic field gradient and intensity, and efficient coupling self-adaption of the magnetic field and discharge current can be realized according to different working media.

The utility model discloses a steam-water circulation system for a steam generator, which belongs to the technical field of nuclear power operation and comprises the steam generator, a steam turbine, a condenser, a starting water supply tank, a deaerator, a sixth valve group, a first valve group, a second valve group, a third valve group, a fourth valve group, a fifth valve group and a sixth valve group. According to the system, thermal load impact on the condenser at the initial stage of starting of the unit can be avoided, meanwhile, water consumption and heat consumption in the starting process are low, and safe operation of the unit can be guaranteed when feed water transmission fluctuates.

The invention belongs to the technical field of thermal power generation, and relates to a thermodynamic system capable of quickly adjusting unit load, which comprises a boiler, a high-pressure cylinder, an intermediate-pressure cylinder, a low-pressure cylinder and a regenerative system, the high-pressure cylinder and the intermediate-pressure cylinder are respectively connected with main steam and reheat steam of the boiler, and the intermediate-pressure cylinder is connected with the low-pressure cylinder in a steam exhaust manner; the regenerative system comprises a mixed heater, a plurality of high-pressure heaters, a plurality of low-pressure heaters, an oxygen removal water supply assembly and a condenser assembly, and the mixed heater is connected with a first-stage steam extraction opening of a high-pressure cylinder; the condenser assembly is used for condensing dead steam of the low-pressure cylinder into water, then the water is heated by the low-pressure heater, the deoxygenization water supply assembly, the high-pressure heater and the mixed heater in sequence, and then the water enters the boiler again. When the unit needs to rapidly increase and decrease the load, the aim of increasing the load adjusting speed of the unit is achieved through the inherent heat storage function in a back heat squeezing or strengthening mode.

The invention relates to the technical field of phased array radar power supply and distribution, in particular to an intelligent multi-stage slow start device applied to a radar power supply and distribution system, and the intelligent multi-stage slow start device is connected between an input terminal and an output terminal of the radar power supply and distribution system. The intelligent multi-stage slow start device comprises a main loop module, a state acquisition module and a decision control module, the main loop module is composed of a main relay and n slow start branches which are connected in parallel. Each slow start branch is composed of a branch relay and a current-limiting resistor which are connected in series. The state acquisition module is composed of a voltage acquisition unit used for acquiring output voltage in real time and a temperature acquisition unit used for acquiring the temperature of each current-limiting resistor in real time. The decision control module is composed of a central processing unit, a voltage reference adjusting unit, a comparison unit and a driving unit, and is used for controlling the on-off of the branch relays of the n slow start branches. According to the device, low-cost, low-heat-consumption and high-reliability slow start is realized, and higher-level system protection is provided.

The utility model discloses a novel lime powder suspension calcining device which comprises a preheater used for preheating limestone powder, a decomposing furnace used for calcining and decomposing the limestone powder and a cyclone cooler used for cooling and recycling decomposed materials. A hot blast stove for conveying combustion-supporting air into the decomposing furnace is arranged below the decomposing furnace; a cooling air outlet end of the cyclone cooler is communicated with an inlet end of the hot blast stove; the raw material utilization range is wide, utilization of fine powder can be achieved, the utilization rate of raw material products is improved, the powdery material is suspended in hot air flow, the contact face between the powdery material and the air flow is large, the heat transfer speed is extremely high, efficiency is high, and the raw overburning rate is low and is within 2%; meanwhile, heat efficiency is high, heat consumption of unit products can be effectively reduced, productivity is improved, and product quality is improved.

The invention relates to a magnetofluid thermal switch and a heat conduction control method. The technical problems that existing space observation equipment is large in refrigeration difficulty, poor in heat dissipation and large in heat dissipation design difficulty are solved. The device comprises a heat conduction mounting plate, a separation heat insulation pad, an annular heat insulation pad, a working area sealing cavity and a storage area sealing cavity; the heat-conducting mounting plate and the separating heat-insulating pad are connected to define a working area; the two ends of the working area are connected with the working area sealing cavity and the storage area sealing cavity through annular heat insulation pads respectively. The working area sealing cavity is provided with a working area sealing cavity communicated with the working area; a working area coil protection layer and a working area magnetic coil are arranged on the inner wall of the working area sealing cavity; the storage area sealing cavity is provided with a storage area sealing cavity communicated with the working area; a storage area coil protection layer and a storage area magnetic coil are arranged on the inner wall of the storage area sealing cavity; the other cavity part of the storage area sealing cavity forms a storage area, and the storage area and a vacuum cavity in the working area are filled with magnetic fluid.

The present application discloses a multi-polarization feeding method for an ultra-wideband tightly coupled phased array, wherein the phased array is composed of N×N antenna units; any antenna unit is composed of a horizontally polarized vibrator and a vertically polarized vibrator, which are orthogonal to each other, and a T / R component channel is connected to its rear end, and the horizontally polarized vibrator or the vertically polarized vibrator of any antenna unit is fed by switching the switch component in the T / R component channel; the switch component includes a plurality of switching switches, so as to change the feeding mode of any antenna unit by the cooperation of the plurality of switching switches; the phased array is divided into several sub-arrays, and any sub-array includes 2×2 antenna units, so as to use the switch component to control the feeding mode of each antenna unit in any sub-array, so as to realize multiple polarization feeding modes of the phased array. The feeding method of the present application can flexibly control the antenna vibrators excited by the tightly coupled antenna units, and realize multiple polarization functions in combination.

The invention discloses an application of silicon fluoride in preparation of Portland cement clinker. The application comprises the following steps: (1) preparing raw materials, wherein the preparation raw materials of the Portland cement clinker comprise sandstone obtained by mining and screening siliceous ores, yellow phosphorus slag, an iron material, fly ash, coal gangue, sludge, silicon fluoride waste residue and limestone; (2) crushing and homogenizing the raw materials; (3) preheating and decomposing; and (4) carrying out high-temperature calcination. The problem that silicon fluoride waste residues are difficult to stack is effectively solved, the reaction activity of crystalline silicon is increased, clinker is promoted to be calcined and compounded completely, and the liquid phase appearing temperature and the clinker sintering temperature are reduced. The firing temperature range is expanded, the length of a firing zone is prolonged, and the reaction time of materials is prolonged. The viscosity of a liquid phase can be reduced, so that the diffusion of mass points in the liquid phase is facilitated, and the formation of tricalcium silicate is accelerated. As the firing range of the clinker is expanded, the harm caused by non-uniform temperature field in the kiln is greatly reduced, and the yield and quality of the clinker are improved. And as the calcining temperature is reduced, the NxO emission is correspondingly reduced.

The utility model discloses a high-thrust direct burial laying pipe network stud fixing joint, the stud fixing joint is fixedly connected in a fixing pier in a pouring way, the stud fixing joint comprises an outer sleeve steel pipe and a compaction reinforcing steel bar, the outer sleeve steel pipe is fixedly sleeved on the circumferential outer wall of a working steel pipe at intervals, and the compaction reinforcing steel bar is fixedly sleeved on the outer wall of the working steel pipe. The interval between the outer sleeve steel pipe and the working steel pipe is filled with a heat preservation layer, and a plurality of stud rings are axially distributed on the periphery of the outer sleeve steel pipe at intervals. The stud rings are clamped by compaction steel bars in the axial direction of the working steel pipe, and the compaction steel bars are fixedly arranged on the reinforcing bars of the fixing pier in a welded mode. According to the stud fixing joint, the shear-resistant studs are additionally arranged on the outer side of the outer sleeve steel pipe so as to resist longitudinal shear force between concrete and profile steel, the connecting strength of the steel pipe and the concrete can be greatly enhanced, and the overall stress performance of the fixing pier is improved.

This invention discloses an energy-saving multi-effect evaporation system and process based on absorption refrigeration and heat pump in the field of multi-effect evaporation technology. The system includes: a first-effect evaporator, a second-effect evaporator, a third-effect evaporator, a steam condenser, a primary feed pump, and a secondary feed pump. The multi-effect evaporation system also includes a refrigeration unit, a high-pressure evaporator, and a high-pressure absorber. This application recovers waste heat from the multi-effect evaporation process using absorption refrigeration and heat pump technology to generate circulating steam of the same grade as the source steam. This serves as a supplement to the source steam during the evaporation process, reducing both the consumption of source steam and the energy consumption of the cooling tower for cooling medium-temperature water.

The application discloses a heat work driving type refrigeration system with heat and mechanical compression in parallel and multiple heat recovery and a method thereof; an evaporator is sequentially connected with a first-stage compressor and a heat recovery device; the heat recovery device is connected with a gas-liquid separator and an absorber; the gas-liquid separator is connected with a second-stage compressor, the heat recovery device and a condenser; the condenser is connected with a first throttling valve and the gas-liquid separator; the condenser is connected with the gas-liquid separator, a second throttling valve and the evaporator; the absorber is connected with a solution pump, a heat recovery cycle side of the heat recovery device and a generator; one side of the generator is sequentially connected with a third throttling valve of the heat recovery cycle side of the heat recovery device and the absorber, and the other side of the generator is connected with the heat recovery device and the condenser. In the system, the heat and mechanical compressors have parallel connection characteristics at a high-pressure stage, and are connected in series at a low-pressure stage, and the exhaust heat of three compression processes is compactly recovered and utilized in heat compression through a multiple flow heat recovery device, so that the heat consumption is significantly reduced and the matching of the system with a small and medium-sized heat source is improved.

The present application relates to a UV acrylic optical bonding glue, a preparation method thereof and a composite optical film, which adopts a mixture of three systems of acrylate oligomers, polyurethane oligomers and epoxy oligomers, and optimizes the proportion of each component and regulates the components and proportions of acrylate oligomers to achieve low viscosity, direct coating, excellent soft bonding performance, high tensile strength, excellent peeling force performance and environmentally friendly characteristics of solvent-free use. It can be directly applied to the composite optical film industry without solvent dilution, significantly reducing manufacturing costs. In addition, the introduction of a dual photoinitiator system broadens the photocuring wavelength range of the glue, achieving fine control of curing, and the addition of isocyanate and epoxy coupling agents further improves the adhesion between the glue and the optical film and the overall structural stability of the composite optical film.

The invention discloses a transformation method for adding a heat exchange unit of a cement kiln tail preheating system, which comprises the following steps: a preheating system and a corresponding basic tower are newly arranged on the ground near an original kiln tail tower, the newly arranged preheating system comprises multiple stages of heat exchange units, and each heat exchange unit comprises a cyclone, a connecting heat exchange pipeline and a material pipe; the connecting pipeline is mainly used for realizing gas-solid heat exchange and gas conveying among the heat exchange units, the cyclone cylinder is used for realizing gas-solid separation on a gas-solid mixture subjected to heat exchange, and the material pipe is used for realizing material conveying among the heat exchange units. In addition, gas and material conveying between the newly-built kiln tail preheating system and the original preheating system is achieved by transforming a connecting pipeline, a material pipe and the like between the original kiln tail preheating system and the newly-built kiln tail preheating system. According to the method, a five-stage preheater is transformed into a seven-stage preheater, the flue gas heat loss of an outlet of the preheater is greatly reduced, the decomposition rate of hot raw materials entering the kiln and the burn-off rate of pulverized coal are increased at the same time, and the method is high in feasibility of transformation implementation, low in civil engineering transformation cost, controllable in transformation construction period and short in kiln stopping time.

The utility model discloses a sealed deep groove ball bearing, and relates to the technical field of deep groove ball bearings. The sealing ring comprises an outer ring and an inner ring, a buffering mechanism and a lubricating mechanism are arranged on the outer ring, and the buffering mechanism comprises a buffering assembly and a sealing assembly; the buffering assembly comprises a plurality of limiting blocks fixedly connected to the outer wall of the inner ring, a plurality of balls are arranged between the limiting blocks, the outer wall of the inner ring and the inner wall of the outer ring are each provided with an embedded sliding groove, the outer caliber of each ball is the same as the inner caliber of the corresponding embedded sliding groove, and the balls are slidably connected with the inner walls of the embedded sliding grooves. And first grooves are formed in the multiple limiting blocks correspondingly, two pistons are slidably connected to the inner walls of the first grooves, and sliding rods are fixedly connected to the sides, away from each other, of the two pistons correspondingly. The buffering mechanism is arranged, so that the contact area of the balls and the circular grooves is reduced, the heat consumption and the energy loss of the bearing are reduced, and the overall efficiency and the stability of the bearing are improved.