659 results about "Free cooling" patented technology

The invention discloses an intelligent air conditioner water chilling unit control method and system based on predictive optimization. Operation data and weather forecast data are collected to establish a dynamic response reference, building cold load sudden change opportunity is recognized, the mismatching relation between magnetic suspension frequency and wet bulb temperature is detected, and energy-saving opportunity recognition data is generated to determine a cooling starting judgment table; identifying equipment response delay characteristics by using a dynamic response reference, extracting time sequence advantage parameters to determine dislocation configuration among multiple pieces of equipment, and generating coordination control parameters; cloud-local transmission delay analysis is carried out according to the coordination control parameters, and a coordination control sequence is generated through buffer opportunity identification and delay compensation; mechanical refrigeration suppression data is generated through energy efficiency mode classification, free cooling potential mining is implemented to form a cold source optimization factor, and an emergency response strategy is generated; an emergency response strategy is used to identify a multi-device linkage trigger critical zone, a prediction correction feedback network is constructed, a global collaborative optimization instruction is generated, and the system operation efficiency and the control precision are improved.

The invention relates to the technical field of electric workover rig thermal management, and discloses a workover pump truck electric drive thermal management method and system, and the system comprises a multi-source temperature collection module, an operation state monitoring module, a thermal management analysis module, a strategy matching engine module, a dynamic execution control module, a feedback optimization module, and a prediction decision module. The method comprises the following steps: acquiring environment temperature, motor temperature, battery temperature and cooling liquid temperature data; obtaining motor power, battery current and a vehicle operation mode; generating a thermal management demand level based on the temperature and the operating parameters; matching natural cooling, air cooling or liquid cooling strategies according to grades; cooling operation is executed, the temperature change rate is calculated in real time, and the cooling intensity is dynamically adjusted; when the threshold value is exceeded, liquid cooling cooperative control is started; predicting a thermal load trend through an LSTM model, generating a dynamic cooling plan, and optimizing an execution priority; and a thermal management efficiency evaluation report is output, so that the operation reliability and energy efficiency of the electrically-driven workover pump truck are improved.

The invention provides a light, storage, charging and vehicle heat management system. The thermal management system comprises a plurality of passages, a valve body assembly and a heat dissipation device, wherein the plurality of passages are communicated with the valve body assembly. Wherein the plurality of channels comprise one or more of a liquid cooling channel of the charging host, a liquid cooling channel of the charging gun and a liquid cooling channel of the vehicle-mounted battery. In addition, the channels further comprise a liquid cooling channel of the energy storage equipment and a liquid cooling channel where the heat dissipation device is located. The heat dissipation device is used for cooling the cooling liquid flowing in the liquid cooling channel where the heat dissipation device is located through a compressor or natural cooling. The valve body assembly is used for controlling one or more of the multiple channels to be communicated with the liquid cooling channel where the heat dissipation device is located. According to the thermal management system provided by the invention, thermal management in at least two application scenes is subjected to integrated design, so that the resource utilization rate can be effectively improved while the thermal management requirements of the scenes integrated in the thermal management system are met, and the operation energy efficiency of the thermal management system can be improved.

The invention discloses a production method for eliminating martensite and bainite of a 70Kg-grade steel wire rod for welding, which comprises the working procedures of steel billet heating, controlled rolling, compensation heating and cooling and waste heat isothermal heat treatment, in the steel billet heating procedure, the heating time of a rectangular billet in a heating furnace is greater than or equal to 5 hours, the heating temperature is 1120-1180 DEG C, and the soaking temperature is 1140-1200 DEG C; in the controlled rolling process, the finish rolling temperature is 900-960 DEG C, and the spinning temperature is 920-980 DEG C; in the compensation heating process, a coil runs on a Stelmor roller way for 14-18 minutes, the temperature is reduced to 650-700 DEG C, and the coil is collected; according to the waste heat isothermal heat treatment procedure, the coiled wire rod enters a 610-650 DEG C heat preservation gallery with temperature compensation, enters a slow cooling gallery after heat preservation is conducted for 2-3 h, is slowly cooled to 450-500 DEG C and is taken out of the slow cooling gallery to be naturally cooled to 200 DEG C or below, and packaging is conducted.

The invention discloses a driving permanent magnet synchronous motor with a heat dissipation mechanism, and relates to the technical field of 999. The outer side face of the rear end cover is fixedly connected with the inner side face of a base, a copper bar is embedded in the side, away from a shell, of the rear end cover, the inner side face of the rear end cover is fixedly connected with the surface of the copper bar, the side, away from the rear end cover, of the copper bar makes contact with the base, and the base is grounded; the air cooling assembly is fixedly connected with the end, close to the rear end cover, of the rotating shaft, the natural cooling assembly surrounds the outer portion of the shell, the inner side face of the natural cooling assembly is fixedly connected with the outer side face of the shell, the natural cooling assembly can increase the contact area with the outside, and the heat dissipation effect is enhanced. The rear end cover sucks air in the gap of the natural cooling assembly into the rear end cover to form flowing airflow, so that a better cooling effect is achieved, and the cooling effect of the air cooling assembly is radiated to the outside of the shell.

The invention provides a cooling system and a charging pile, the cooling system comprises a first heat exchanger, a second heat exchanger and a third heat exchanger, the first heat exchanger comprises a first heat exchange part and a second heat exchange part, and the second heat exchange part is connected in series with an energy storage battery module of the charging pile through a first cooling loop; the second heat exchanger is connected in series with a power conversion module of the charging pile through a second cooling loop; the third heat exchanger and the second heat exchanger are connected in parallel through a first valve group, the third heat exchanger and an energy storage battery module of the charging pile are connected in series through a third cooling loop, and the third cooling loop comprises a second valve group; and the first valve group and the second valve group have opposite opening and closing states. The cooling system combines two cooling modes of refrigerant cooling and natural cooling, the refrigeration mode of the cooling system can be adaptively adjusted, and the energy consumption of the cooling system can be reduced.

The invention discloses a controlled rolling and controlled cooling method for HRB400-grade hot-rolled ribbed steel bars, and belongs to the technical field of controlled rolling and controlled cooling of steel bars. The method comprises the following steps that a steel billet is heated by a heating furnace, rolled and subjected to three-section water penetration, the temperature of the steel billet is lowered to 820-840 DEG C when the temperature of the steel billet reaches 820-840 DEG C, and natural cooling, shearing and warehousing are conducted; wherein the pressure of a main pipe for water passing is 0.9 MPa to 1.1 MPa; the opening degree of a valve for water penetration in the first section is more than 90%, and the pressure of a nozzle is 0.7-0.9 MPa; the opening degree of a second-section water passing valve is 28-32%, and the pressure of a nozzle is 0.1-0.3 MPa; the opening degree of a third-section water passing valve is 4-6%, and the pressure of a nozzle is 0.04-0.06 MPa; the steel billet comprises the following chemical components in percentage by weight: 0.22 to 0.25 percent of C, 0.22 to 0.60 percent of Si, 1.30 to 1.55 percent of Mn, 0.030 to 0.040 percent of V, less than or equal to 0.045 percent of P, less than or equal to 0.045 percent of S and 0.47 to 0.54 percent of Ceq. By means of the controlled rolling and controlled cooling manufacturing method, the content of alloy such as Si, Mn and V can be reduced, and meanwhile it is guaranteed that the large-specification HRB400-grade hot-rolled ribbed steel bars with the diameter phi being 36 mm or above meet the national standard requirement.

The invention belongs to the field of machine tool linear feed shaft thermal error prediction, and provides a cross-working-condition migration machine tool thermal error step-by-step prediction method and a cross-working-condition migration machine tool thermal error step-by-step prediction system. According to the technical scheme, the method comprises the following steps: acquiring thermal error data of the linear feed shaft of the machine tool under two working conditions of natural cooling and forced cooling and time-temperature distribution data of each temperature measurement point of the linear feed shaft; decoupling the thermal error data under each working condition into a linear component and a nonlinear deviation component; according to a heat conduction and convective heat transfer coupling mechanism, the inhibition effect of low-temperature water on the temperature rise of the lead screw is quantified, and a temperature rise inhibition coefficient is calculated; based on the inhibition coefficient, mapping the original temperature rise data and the nonlinear deviation component under the natural cooling working condition to an equivalent temperature rise characteristic space under the forced cooling working condition; and predicting a cross-working-condition linear component and a non-linear deviation component according to the equivalent temperature rise characteristic space, and performing superposition to obtain a thermal error prediction value of the linear feed shaft. And high-precision prediction of the thermal error of the linear feed shaft under different cooling working conditions is realized.

The invention provides a data center cascade refrigeration system control method and device, and the method comprises the steps: obtaining an outdoor wet bulb temperature to determine a first target temperature, obtaining an indoor return air temperature to determine a second target temperature, and calculating the temperature difference between the first target temperature and the second target temperature; the data center cascade refrigeration system is controlled to enter a first refrigeration mode, a second refrigeration mode or a third refrigeration mode according to preset conditions, and only the chilled water refrigeration system is started in the first refrigeration mode; in the second refrigeration mode, the chilled water refrigeration system and the evaporation cold and heat pipe refrigeration system are started at the same time; and in the third refrigeration mode, only the evaporation cold and heat pipe refrigeration system is started. In different modes, the system optimizes the refrigeration effect by adjusting the compressor frequency, the water pump frequency, the water supply valve opening, the fan frequency, the fluorine pump frequency, the expansion valve opening and other parameters, and the problems that in an existing refrigeration system in the prior art, the water side natural cooling time is short due to the fact that the temperature difference between the air side and the water side is inconsistent are solved. And more energy is consumed to meet the refrigeration requirement.

A hybrid adiabatic cooling system for a data center includes an outer conduit loop including a feed segment and a return segment and an inner conduit loop fluidly coupled to the feed and return segments of the outer conduit loop. The hybrid adiabatic cooling system includes a hybrid adiabatic cooler fluidly coupled to the outer conduit loop to cool a first cooling liquid circulating from the return segment to the feed segment of the outer conduit loop. The hybrid adiabatic cooling system includes a direct liquid cooling unit fluidly coupled to the outer conduit loop and an air handling unit fluidly coupled to the inner conduit loop. The hybrid adiabatic cooling system operates in a free cooling mode when the outdoor air temperature is less than a first threshold temperature and a chiller mode when the outdoor air temperature is greater than the first threshold temperature.

The invention discloses a forming and cooling device for a spiral steel pipe, and relates to the technical field of spiral steel pipe formation.The forming and cooling device for the spiral steel pipe comprises a cart, a liquid mixer, a water pump and two long straight pipes, and a water heater and a cold water tank are fixedly installed on the cart; a water inlet of the water pump is communicated with a water outlet pipe in the liquid mixer through a guide pipe, and the two long straight pipes are communicated with a water outlet of the water pump through a flow divider. Cooling can be started in time according to the actual temperature of the spiral steel pipe, the cooling speed can be controlled by adjusting the water flow and the temperature, compared with natural cooling, the cooling time is greatly shortened, and therefore the production efficiency of the spiral steel pipe is improved; the temperature of cooling water can be accurately controlled between 20 DEG C and 40 DEG C, the situation that the quality and performance of the spiral steel pipe are affected due to the fact that the water temperature is too low or too high is avoided, and the welding quality and the forming effect are guaranteed.

The utility model relates to the technical field of PVC (polyvinyl chloride) film processing, in particular to cooling equipment for PVC film processing. Comprising a cooling box, a rotating door and an auxiliary mechanism, the auxiliary mechanism comprises a mounting plate, a fixing block, a first cooling pipe, a second cooling pipe, a supporting device and an air blowing device, and during cooling, when a PVC film slides and passes through a gap area between the first cooling pipe and the second cooling pipe, the PVC film makes contact with the bottom of the first cooling pipe and the top of the second cooling pipe correspondingly; furthermore, the air blowing device blows cooling air for assistance, so that compared with traditional natural cooling and single air cooling, the cooling effect and efficiency are improved, uniform heat dissipation and cooling of the PVC film can be better achieved, the heat dissipation efficiency is improved, and the service life of the PVC film is prolonged. And the final forming effect and the basic quality of the product are improved.

The invention provides a natural cooling control method and system for an energy storage battery liquid cooling unit, and the method comprises the steps: 1, controlling the energy storage battery liquid cooling unit to start a gravity natural cooling mode, and cooling an energy storage battery in the gravity natural cooling mode; 2, the target state of the energy storage battery liquid cooling unit is collected in real time; 3, when the target state reaches a first preset condition, the energy storage battery liquid cooling unit is controlled to be switched to a liquid pump natural cooling mode, and cooling control is conducted on the energy storage battery according to the liquid pump natural cooling mode; 4, updating the target state in real time based on the cooling result, and when the target state reaches a second preset condition, controlling the energy storage battery liquid cooling unit to be switched to a gravity natural cooling mode; through a double-coupling mode of gravity natural cooling and liquid pump natural cooling, an outdoor natural cold source is fully utilized, the operation energy efficiency of the unit is greatly improved, and energy conservation and emission reduction are achieved.

A heating, ventilation, air conditioning, and refrigeration (HVAC&R) system configured to operate in a plurality of cooling modes includes a mechanical cooling system configured to place a working fluid in a heat exchange relationship with a cooling fluid, a free cooling system configured to place the cooling fluid in a second heat exchange relationship with an ambient air flow, and a controller comprising processing circuitry and a memory, wherein the memory comprises instructions that, when executed by the processing circuitry, are configured to cause the processing circuitry to transition operation of the HVAC&R system between the plurality of cooling modes based on a cooling demand of the HVAC&R system and based on an estimated power consumption of the HVAC&R system.

A hybrid adiabatic cooling system for a data center includes an outer conduit loop including a feed segment and a return segment and an inner conduit loop fluidly coupled to the feed and return segments of the outer conduit loop. The hybrid adiabatic cooling system includes a hybrid adiabatic cooler fluidly coupled to the outer conduit loop to cool a first cooling liquid circulating from the return segment to the feed segment of the outer conduit loop. The hybrid adiabatic cooling system includes a direct liquid cooling unit fluidly coupled to the outer conduit loop and an air handling unit fluidly coupled to the inner conduit loop. The hybrid adiabatic cooling system operates in a free cooling mode when the outdoor air temperature is less than a first threshold temperature and a chiller mode when the outdoor air temperature is greater than the first threshold temperature.

The invention discloses an angle-variable and self-revolution wafer base device, and belongs to the technical field of wafer bases, the angle-variable and self-revolution wafer base device comprises a revolution base, a gear carrier is fixedly connected to the center of the top of the revolution base, and a base is arranged above the gear carrier. According to the cooling device, an external liquid supply device conveys cooling water into the connecting base through a cooling water inlet pipe, inclined blades in the connecting base drive a driving shaft and a double-end protruding block to rotate, a sliding block drives an annular gear and a cooling disc to rotate through a rack, and the rotating cooling disc centrifugally throws out the cooling water; a uniform and dead-corner-free cooling water curtain is formed, the rotation shaft and the adjusting shaft are completely wrapped, the cooling uniformity of the peripheral side of the shaft body is ensured, stable and efficient heat exchange is achieved, sprayed cooling water can cool the revolution seat and the gear carrier at the same time, the influence of the high temperature in the reaction cavity on the device is reduced in an auxiliary mode, and the reaction efficiency is improved. And the operation reliability and the overall performance of the device are obviously improved.

The utility model discloses a liquid-cooled switch of a zero-backplane CLOS orthogonal architecture, and the switch comprises a switch frame body, and a front panel of the switch frame body is provided with a main control board card module and a service board card module; a power supply module is arranged at the bottom of the switch frame body; a rear panel of the switch frame body is connected with the liquid cooling module and the switch board card module, and the liquid cooling module comprises a cooling capacity distribution unit, a cooling liquid pipeline and cooling liquid arranged in the cooling liquid pipeline; the cooling capacity distribution unit is arranged in a convex shape, and a cold water supply port and a hot water return port are formed in the side face of the cooling capacity distribution unit. The convex surface of the cooling capacity distribution unit is embedded into a middle shaft of a rear panel of the switch frame body, and a water inlet and a water outlet are formed in the convex surface; and the cooling liquid pipeline is connected with the cooling capacity distribution unit, the exchange board card module and the business board card module. And by adopting a mode of combining liquid cooling and natural cooling, high-energy-efficiency and low-noise operation is realized.

The invention discloses a controlled cooling method of a steel wire rod 87Mn for a bridge cable. The rolling temperature, the spinning temperature and the roller way speed are accurately controlled, the Stelmor air cooling control cooling technology is adopted, it is ensured that the temperature of a wire rod is evenly distributed in the cooling process, and too fast or too slow local cooling is avoided. A sectional controlled cooling process is adopted, network cementite is prevented from being generated through first-section rapid cooling, uniform transformation of the structure is ensured through second-section slow cooling, the structure is stabilized through third-section natural cooling, the process design is reasonable, and operation is easy and convenient. The finally obtained 87Mn hot-rolled wire rod is free of martensite and network cementite in the core, the sorbite rate is larger than or equal to 93%, and the 87Mn hot-rolled wire rod has high strength, high plasticity and good drawing performance and is suitable for the high-requirement field such as bridge cables.

The invention discloses a jet flow boiling pump-free cooling system combined with a sintering pin-fin structure, which comprises a jet flow boiling heat exchange chamber, a steam pipeline, a liquid storage device, a condenser and a circulation loop formed by a condensation pipeline, the jet flow boiling heat exchange chamber is a closed cavity, the first side wall of the jet flow boiling heat exchange chamber is a heat source substrate, the second side wall of the jet flow boiling heat exchange chamber is a condensation pipe connecting wall, and the jet flow boiling heat exchange chamber and the condensation pipe connecting wall are opposite. A jet flow hole plate is arranged between the heat source substrate and the condenser pipe connecting wall, and sintering needle fins are arranged on the inner side of the heat source substrate. An exhaust hole is formed in the top of a cavity formed by the heat source substrate and the jet flow hole plate and connected with a steam pipeline. The condensation pipe connecting wall is provided with a through hole connected with a condensation pipeline. The liquid storage device is higher than the jet flow boiling heat exchange chamber, the steam pipeline and the condensation pipeline are both connected with the liquid storage device, the liquid storage device is connected with a condenser used for condensing heat dissipation working media, and the heat dissipation working media are arranged in the circulation loop. Pump-free circulation is adopted, energy is saved, and the heat dissipation capacity is high.

The invention discloses a cooling annealing process and cooling equipment for crucible founding, and relates to the technical field of crucible preparation, and the cooling annealing process comprises the steps of crucible founding, quenching stage, slow cooling stage and natural cooling stage. Wherein in the step of melting the crucible, a crucible mold containing quartz sand is placed in a melting furnace for melting the crucible; in the rapid cooling stage, cooling air is introduced into the crucible mold, and circulating cooling water is adopted to rapidly cool the crucible mold; in the step of the slow cooling stage, the crucible mold is slowly cooled through circulating cooling water; in the step of the natural cooling stage, cooling air is introduced into the crucible mold so as to naturally cool the molten crucible. According to the cooling annealing process for crucible melting, provided by the invention, thermal stress generated in the crucible melting process can be effectively reduced.

The invention discloses an energy storage battery liquid cooling temperature control system combining natural cooling and compressor refrigeration, and relates to the technical field of energy storage equipment temperature control. The system comprises a compression cooling loop, a natural cooling loop, an environment temperature sensor and a controller, the compression cooling loop adopts a compressor refrigeration technology, the natural cooling loop is connected with the compression cooling loop in parallel, and the compression cooling loop comprises a compressor, a condensation pipe, an expansion valve and a first heat exchange plate which are sequentially and circularly communicated. The natural cooling loop comprises a liquid storage tank, a circulating pump, a natural cooling coil and a second heat exchange plate which are sequentially and circularly communicated, the two heat exchange plates are integrated in the evaporator and used for exchanging heat with the energy storage battery, and a compression cooling mode and a natural cooling mode can be switched at different environment temperatures through the hardware structure relation of the two heat exchange plates; therefore, the system energy efficiency can be improved by avoiding long-term operation of the compressor, and the phenomena of poor oil return and insufficient lubrication are avoided by avoiding long-term low rotating speed of the compressor, so that the reliability is improved and the service life is prolonged.

The invention belongs to the technical field of ocean engineering. According to the seabed data intelligent calculation center structure and the working method, a plurality of stand columns and a tubular structure are connected to form a frame used for bearing a tank body, a supporting seat is fixed in the frame, and the tank body is arranged on the supporting seat; grating plates are arranged at the two ends and the top of the frame, a plurality of suction foundations are fixed to the bottom of the frame, and data intelligent calculation equipment is arranged in the tank body; a temperature and humidity real-time monitoring sensor and a pressure balance adjusting module are integrated in the tank body, the temperature and humidity real-time monitoring sensor communicates with a cooling system outside the tank body, the heat dissipation efficiency in the tank body is adjusted in a linkage mode according to real-time temperature and humidity data, and the pressure balance adjusting module is used for automatically compensating air pressure in the cabin according to water pressure differences of different depths of the seabed; according to the invention, the structural stability of the seabed is ensured, natural cooling is carried out through low-temperature seawater, the problem of high heat dissipation energy consumption of a traditional data center is solved, and a stable working temperature environment is provided for data intelligent calculation equipment.

The invention relates to a micro-fluidic chip for efficient separation of a micro gas chromatograph, the micro-fluidic chip for efficient separation of the micro gas chromatograph comprises a silicon wafer, a water cooling structure arranged above the silicon wafer and a heating element and a temperature measuring element arranged below the silicon wafer, and the water cooling structure is manufactured by adopting the micro-nano machining bonding process. And the water cooling structure is tightly connected with the upper part of the silicon wafer in an attached manner by adopting an anodic bonding mode. According to the micro-fluidic chip for efficient separation of the micro-gas chromatograph, the water cooling structure is prepared on the silicon wafer in a bonding manner, so that the micro-fluidic chip for efficient separation of the micro-gas chromatograph is applied to form a micro-chromatographic column through the water cooling structure after analysis is completed under the condition that the size of the chip is not increased; the cooling waiting time during continuous analysis can be greatly shortened, the power consumption is reduced, and the problem of high power consumption caused by poor cooling effect due to the fact that the power consumption is reduced by a natural cooling mode of an existing miniature gas chromatograph is solved.

The utility model belongs to the technical field of glass reinforced plastic plates, and particularly relates to a rapid cooling device for a glass reinforced plastic plate. The device comprises a fixed frame which is arranged between a drying oven and roller glue equipment, and a glass reinforced plastic plate penetrates through the middle of the fixed frame; the multiple air curtain machines are arranged above and below the fixed frame, the air curtain machines above and the air curtain machines below are arranged in a staggered mode, and air outlets of the air curtain machines face the glass steel plate; a tray is further arranged at the air inlet of the upper air curtain machine and used for containing cold water or ice blocks. The utility model is used for solving the technical problems in the prior art that the production efficiency is influenced and the cooling temperature is difficult to accurately control because the glass reinforced plastic plate is naturally cooled.

The invention discloses a small-specification 650MPa-grade multiphase aseismic steel bar and a production method thereof. The production method comprises the following steps of smelting, refining, continuous casting, heating, bar rolling and controlled cooling. In a casting blank obtained through continuous casting, the weight percentage of N is 0.009-0.017%, and V / N is equal to 10.0-20.0; in the heating step, the minimum heating temperature T needs to meet the formula T = 1180 + 70-t; wherein t is the heating time; the oxygen enrichment rate in the heating furnace is controlled to be 0-4%; in the bar rolling step, the temperature before finish rolling is controlled to be 850-900 DEG C; in the controlled cooling step, the reinforcing steel bars are naturally cooled on a cooling bed after being subjected to water cooling; according to the method, the small-specification 650MPa-grade anti-seismic steel bar meeting the anti-seismic requirement can be stably produced, the yield strength ReL of the steel bar is larger than or equal to 650MPa, the tensile strength Rm is larger than or equal to 820MPa, the strength-to-yield ratio Rm / ReL is larger than or equal to 1.25, the percentage elongation A after fracture is larger than or equal to 15%, the maximum force total elongation Agt is larger than or equal to 9.0%, and the steel bar has good anti-seismic performance.

The invention discloses a combined type air conditioning system based on shallow geothermal utilization and a working method thereof, and belongs to the technical field of air conditioners. A combined type air conditioning system based on shallow geothermal utilization comprises a user side floor heating system, a user side air conditioning unit, a ground source heat pump unit, an air source heat pump unit and a ground source circulating water pump for free cooling. The ground source heat pump unit, the air source heat pump unit and the ground source circulating water pump for free cooling are connected into a user side floor heating water supply and return pipeline and a user side air conditioner water supply and return pipeline through pipelines respectively, and the ground source heat pump unit, the air source heat pump unit and the ground source circulating water pump are arranged in parallel. A water supply pipeline and a water return pipeline of the ground source circulating water pump for free cooling are connected with the ground source side water supply pipeline, and an electric control valve is arranged between the water supply pipeline and the water return pipeline of the ground source circulating water pump for free cooling. The cold and heat supply energy efficiency can be improved, free cold supply in local time in summer is achieved, and the system has important significance on energy conservation and consumption reduction.

The invention relates to the technical field of plastic bottle production, and discloses a plastic bottle pressurizing and blowing device and a bottle blowing method thereof, and cold air is quickly sprayed to the outer surface of a just formed plastic bottle through air holes uniformly formed in the inner wall of a mold cavity. Cold air is in direct contact with the plastic bottles, heat is rapidly taken away through forced convection, and the plastic bottles are cooled and shaped in a short time. Compared with a traditional natural cooling mode, the cooling efficiency is remarkably improved through the cooling mode, the product quality is guaranteed, the production cycle of a single product is shortened, and therefore the overall production efficiency is improved. In addition, the high-pressure gas in the main exhaust pipe is shunted through the auxiliary gas filling pipe, so that the cross sectional area of circulation of the high-pressure gas can be increased, the total flow of the gas entering the bottle preform can be increased, and the expansion speed of the bottle preform is obviously increased.

The utility model discloses an efficient cooling device for PVC (polyvinyl chloride) color film production, and relates to the technical field of efficient cooling devices. The cooling roller comprises a cooling roller body, a circulating cooling device and a transmission device, the transmission device moves outside the cooling roller body, a first pipeline is fixedly installed outside the transmission device, the circulating cooling device is fixedly installed outside the first pipeline, and a water injection pipeline is fixedly installed outside the circulating cooling device. In order to solve the problems that a traditional cooling method such as natural cooling or water cooling is low in cooling speed, high in energy consumption and low in production efficiency, the cooling roller is cooled through the water circulation cooling assembly, the temperature of a thin film is reduced through circulating cooling water in the roller body, the cooling speed is high, and the production efficiency is high. In this way, the uniform cooling effect can be achieved, water marks cannot be generated, and the requirement for large-scale production can be met.

The invention relates to the technical field of rock mechanics experiments, and discloses a high-temperature rock strength testing method for eliminating thermal stress interference through active temperature control, and the method comprises the following steps: determining a temperature control cooling rate threshold value for eliminating thermal stress accumulation based on a temperature field-stress field coupling model; the rock sample is controlled to be heated to a target temperature value, heat preservation is conducted for a preset time length, the constant-temperature box containing the rock sample subjected to heat preservation is subjected to temperature-controlled cooling to the room temperature at the target temperature-controlled cooling rate not higher than the temperature-controlled cooling rate threshold value, and therefore the internal temperature field of the rock sample is made to change evenly; and carrying out mechanical strength test on the rock sample subjected to temperature-controlled cooling to obtain a test rock strength parameter without thermal stress interference. According to the invention, thermal stress accumulation caused by natural cooling can be effectively avoided, the precision and reliability of high-temperature rock strength testing are remarkably improved, measurement errors caused by thermal stress interference are reduced, and the engineering requirements of deep ultrahigh-temperature stratum rock mechanical property research are met.

The invention discloses a melt separation titanium slag modification treatment method and system. The method comprises the steps that in the direct reduction-melt separation process, melt separation titanium slag components are regulated and controlled to enable the melt separation titanium slag to contain 40 wt%-60 wt% of TiO2 and 1.1 wt%-9 wt% of C, deslagging is conducted, after heat preservation melting is conducted on the melt separation titanium slag at the temperature of 1550-1600 DEG C for 30-60 minutes, slow cooling is conducted to 1200 DEG C at the cooling rate of 5-10 DEG C / min, then rapid cooling is conducted to 900 DEG C at the cooling rate of 20 DEG C / min or above, finally natural cooling is conducted to the room temperature, and modified slag is obtained. According to the method, regulation and control of components of the melt-separated titanium slag are combined with heat preservation, slow cooling, quenching and natural cooling, anosovite is directionally induced to serve as a main phase of the titanium slag, micronized spinel and an amorphous glass phase, titanium resources are enriched in the anosovite phase, and the modified titanium slag high in grade and good in activity is obtained; and the problems of low additional value, small utilization scale, poor economic benefit and the like of molten titanium slag products are solved.