21results about How to "Stable temperature control" patented technology

This utility model relates to the field of environmentally friendly gas cabinet technology, specifically an intelligent heat dissipation and gas leakage compensation system for an environmentally friendly gas cabinet. It is detachably installed on the back panel of the gas tank of the environmentally friendly gas cabinet and includes an integrated backpack. The integrated backpack includes a cabinet body with multiple chambers. A gas replenishment structure is connected to the gas tank replenishment valve on the gas tank of the environmentally friendly gas cabinet. The heat dissipation structure includes a semiconductor cooling chip and a water-cooled aluminum plate. The two sides of the semiconductor cooling chip are in contact with the back panel of the gas tank and the water-cooled aluminum plate, respectively. A fan-driven cooling unit is installed on the side of the water-cooled aluminum plate away from the semiconductor cooling chip. When the semiconductor cooling chip is energized, it transfers heat from the back panel of the gas tank to the water-cooled aluminum plate, rapidly cooling the inside of the gas tank. Simultaneously, the fan-driven cooling unit provides air cooling. The air cooling and water cooling work together to ensure stable temperature control inside the gas tank.

This invention relates to the field of electrofusion pipe fitting processing equipment technology, and discloses a device for improving the warping of large-diameter electrofusion pipe fittings. The device includes a furnace body with two sets of parallel annular conveyor belts inside. Both conveyor belts are connected to a conveying drive mechanism. Multiple pipe fixing mechanisms for fixing the electrofusion pipe fittings to be processed are evenly spaced on the two conveyor belts. A pipe feeding mechanism is provided at the starting end of the conveying of the two conveyor belts, and a pipe unloading mechanism is provided at the end of the conveying of the two conveyor belts. Both the pipe feeding and unloading mechanisms are located outside the furnace body. The portions of the two conveyor belts inside the furnace body are connected to a rotary temperature control mechanism inside the furnace body for graded temperature control of the electrofusion pipe fittings during rotation. This allows for sequential and uniform cooling of each part of the electrofusion pipe fitting, resulting in better cooling and higher quality after annealing, effectively improving the warping problem of large-diameter electrofusion pipe fittings.

The portable graphene seedling raising shed has the advantages that the graphene composite support rod is adopted, the support rod is used as a heating device while supporting, the support rod itself is changed into an efficient and uniform heating body, stable and controllable heat supply is provided for the inside of the seedling raising shed, the spraying assembly arranged in the shed is convenient for watering and realizes intelligent control, the portable graphene seedling raising shed can be used for small-scale and family type seedling raising and cultivation in winter, has the characteristics of being light, capable of being quickly folded or stretched, and convenient for users to carry, transport and quickly deploy at different sites.

The application provides a continuous production method and system of calcium hydroxide with high whiteness and high specific surface area, and relates to the technical field of limestone deep processing. The continuous production method comprises the following steps: step one: continuously adding quicklime particles into the inlet of a primary digester, continuously adding digestion water and an additive into the inlet of the primary digester, and carrying out premixing and pre-digestion under stirring conditions; step two: continuously introducing the discharge of the primary digester into a secondary digester, continuously adding digestion water and an additive into the inlet of the secondary digester, and stirring and digesting and aging; step three: the discharge of the secondary digester is sequentially introduced into a tertiary digester, a quaternary digester and a quinary digester for digestion and aging, and the product is obtained after grading by a grader. The method can continuously prepare calcium hydroxide with high whiteness and high specific surface area, and has the characteristics of simple process, short time consumption, remarkable effect and low energy consumption, and has been applied in actual production and has good use effect.

The application relates to the technical field of water treatment equipment, and relates to a water treatment equipment which comprises a water storage device and a temperature adjusting device; the temperature adjusting device comprises a heat exchange structure and a heat exchange component; the heat exchange structure has a first heat exchange end and a second heat exchange end; the first heat exchange end is thermally coupled to the water storage device; and the second heat exchange end is thermally coupled to the heat exchange component; wherein the heat exchange structure comprises a first heat exchange piece and a second heat exchange piece; and the first heat exchange piece is thermally coupled to the second heat exchange piece. The water treatment equipment of the embodiment adopts the heat exchange structure of double refrigerating pieces superposition; the first heat exchange piece is thermally coupled to the second heat exchange piece; one refrigerating piece is used to cool the other refrigerating piece; the temperature difference between the two ends is obviously improved; and the heat exchange effect is improved.

A charging pile control method includes the following steps: continuously detecting the actual temperature value at the charging gun line, obtaining a charging gun line temperature setpoint, calculating the difference between the charging gun line temperature setpoint and the actual detected temperature value, and obtaining the charging gun line temperature difference value at continuous time intervals; increasing the liquid cooling oil flow rate of the charging gun when the charging gun line temperature difference is positive, and decreasing the liquid cooling oil flow rate of the charging gun when the charging gun line temperature difference is negative. This solution can dynamically adjust the charging power of the charging pile's liquid cooler by measuring the temperature change value at the charging gun line, achieving the technical effects of reducing energy consumption and stabilizing temperature control.

This invention belongs to the field of polymerization reactions and discloses a reaction system and method for the precipitation polymerization of α-olefins with maleic anhydride. The system includes a reaction circulation subsystem and an external circulation temperature control subsystem. The reaction circulation subsystem includes a reaction vessel, a reactor, a reaction circulation pump, and a mixing connection device. The reaction vessel includes a vessel body, a jacket, a stirring device, and a first non-condensable gas outlet. The reactor includes a reaction liquid chamber, an external circulation liquid chamber, and a second non-condensable gas outlet. The external circulation liquid chamber is arranged around the outside of the reaction liquid chamber and is not connected to it. The external circulation temperature control subsystem includes an external circulation buffer tank, an external circulation pump, an external circulation heater, and an external circulation cooler. This invention, through a segmented reaction system, separates the heating and cooling functions of the reaction vessel, meeting the heating and cooling requirements of the precipitation polymerization of α-olefins with maleic anhydride in different solvent systems at different reaction stages.

The application discloses rapeseed oil refining equipment and a refining process thereof, and relates to the technical field of extraction and refining, which comprises a refining tank, supporting legs are fixedly connected to the bottom of the refining tank, a base is fixedly connected to the bottom of the supporting legs, a feeding inlet is threadedly connected to the top of the refining tank, a driving device is fixedly connected to the top of the refining tank, a refining stirring mechanism is arranged on the inner wall of the refining tank, the oil material can maintain a suitable temperature environment in the stirring process through the refining stirring mechanism, the precipitation and condensation of phospholipids are accelerated, the influence of low temperature on the condensation effect of phospholipids is prevented, the deterioration of oil caused by high temperature is avoided, the inside of the refining tank is uniformly heated at different positions through synchronous stirring, compared with the uneven heating of a single position of a traditional heating rod, the circulating flow heat conduction liquid is matched with the rotary stirring mode of the driving rod, so that the temperature control of the whole degumming process is more uniform and stable.

The utility model relates to the technical field of cultivation equipment, and discloses a traditional Chinese medicine seed rapid germination accelerating device which comprises a fixing frame, baffles are fixedly connected to the periphery of the outer wall of the fixing frame, a bin door is rotatably connected to the front side of the outer wall of the fixing frame, and a water storage tank is fixedly connected to the rear side of the inner wall of the fixing frame. A plurality of water pumps are fixedly connected to the right side of the outer wall of the water storage tank, drainage pipes are fixedly connected to the output ends of the water pumps, adjusting valves are fixedly connected to the front sides of the outer walls of the drainage pipes at equal intervals, branch pipes communicate with the front sides of the outer walls of the adjusting valves, and drainage holes are formed in the left and right sides of the outer walls of the branch pipes. According to the rapid germination accelerating device for the traditional Chinese medicine seeds, the fixing frame serves as a main body, the baffle and the bin door enclose the space, water in the water storage tank is pumped out through the water pump, water flow is received by the water inlet grooves around the reaction box, a suitable germination accelerating environment is created through cooperation of multiple components, different moisture is applied according to different traditional Chinese medicine seeds, and the growth adaptability is guaranteed.

The utility model relates to a waste heat utilization system for an electrode foil production line, which is characterized in that the input end of a front-end formation liquid output pipeline is connected with a liquid outlet of a corresponding front-end formation tank, the output end of the front-end formation liquid output pipeline is provided with a first front-end branch and a second front-end branch, and the first front-end branch is connected with a corresponding first heat exchanger; the output end of the backflow pipeline is connected with a backflow opening of the corresponding front-end formation tank, the input end of the backflow pipeline is provided with a first backflow branch and a second backflow branch, the first backflow branch is connected with the corresponding first heat exchanger, and the second backflow branch is connected with the corresponding second heat exchanger. The rear-end formation tank is connected with the corresponding first heat exchanger through a formation liquid output pipeline and a formation liquid return pipeline, and the rear-end treatment tank is connected with the corresponding second heat exchanger through a treatment liquid output pipeline and a treatment liquid return pipeline. The high-temperature front-end formation liquid is used as a heat exchange medium to heat the rear-end formation tank and the rear-end treatment tank, so that the waste heat utilization of the production line is realized.

The invention discloses a water pump PWM software control method for an instant heating type water dispenser and a corresponding medium and equipment, and the method comprises the steps: S1, receiving a water outlet instruction, and judging whether a water pump PWM historical value corresponding to the current target temperature exists or not; s2, if not, a water pump and a heater are started, the PWM value of the water pump is dynamically adjusted through a PID algorithm according to the difference value between the outlet water temperature and the target temperature till the water temperature stably reaches the standard, and the PWM value is stored as a historical value; s3, if yes, the historical PWM value is directly called to control a water pump and start a heater; and S4, continuously monitoring the water temperature in the quick starting process, and if the water temperature deviates from the target temperature, correcting the historical PWM value to keep the constant temperature. According to the invention, rapid starting is realized by storing and calling the historical PWM value, and time consumed by real-time calculation is reduced; closed-loop control is formed by combining monitoring and correction, long-term stability of the water temperature is guaranteed, and the system adapts to environment and equipment state changes.

The invention provides a reflow soldering selective temperature control device and method based on neural network PID control, and relates to the technical field of selective temperature control, visual scanning monitoring of distribution of elements with different heat capacities is carried out on a PCB, temperature field data is acquired from visual scanning information, and real-time element size information of a preset key area is extracted; performing control quantity analysis, and outputting the control quantity of the independent temperature control module corresponding to the preset key area; carrying out selective temperature compensation analysis on a preset key area, carrying out selective temperature compensation control according to compensation analysis data, carrying out adjustment analysis on adjustment parameters of a micro heater, carrying out parameter adjustment control on the micro heater according to adjustment analysis data, and obtaining selective temperature control data; dynamic and accurate local temperature compensation can be realized for elements with different heat capacities on the same PCB, so that the temperature difference between the elements is remarkably reduced, and welding defects caused by different heat capacities of large and small elements are avoided.

The utility model relates to a kind of PP three-layer co-extrusion foamed sheet surface skin feeling modification devices, and three extruders, screen changer, metering pump, distributor, die, calendar roll group, multiple guide temperature control roller, cooling setting roller group, traction roller group and cutting mechanism are sequentially provided along assembly line direction.The roller barrel of each temperature control structure involved in the utility model is all adopted double-runner spiral structure, and heat exchange medium flows from the middle to both ends of runner or middle two ends to middle, shortens the flow path of heat exchange medium, improves temperature difference, so as to ensure that the temperature of roller barrel can be stably controlled in predetermined range, so as to improve the quality of skin feeling texture modification on three-layer pp foamed sheet upper layer, so that skin feeling texture is more delicate.

The application provides a control method and system for heating furnace combustion optimization, comprising the following steps: S1, connecting a control station with an original fuel control system through Ethernet, and connecting a control manual channel of the original fuel control system; S2, performing temperature control, using relevant valve experience data and furnace change response data to confirm the change amount of the valve and the temperature change corresponding relationship; S3, using actual temperature field change data to perform operation judgment, and sending an execution signal to the relevant valve through temperature difference calculation selection; S4, completing air flow control by the relevant air valve; and S5, sending a control signal to the original fuel control system to complete control. The application improves the combustion stability of the heating furnace, reduces the high dependence on manual operation experience at present, reduces gas consumption and oxidation loss, has high control precision, fast speed response, stable combustion trend, reasonable air-fuel ratio, low modification difficulty and connection safety.

This utility model relates to the field of hydrogen chloride organic solution absorption technology, and discloses a hydrogen chloride organic solution absorption device, including a constant temperature base. A constant temperature mechanism is provided on the top of the constant temperature base. A first transmission hose is provided on the rear side of the top of the constant temperature mechanism. An air inlet mechanism is provided at the outer rear end of the first transmission hose. A second transmission hose is provided on the front side of the top of the constant temperature mechanism. A degradation mechanism is provided at the outer front end of the second transmission hose. The degradation mechanism is used to reduce the content of harmful gases inside. The constant temperature mechanism includes a constant temperature outer shell, the bottom of which is fixedly connected to the top of the constant temperature base. This utility model achieves stable temperature control, ensuring that hydrogen chloride gas is efficiently absorbed by the organic solution at a constant temperature, avoiding the impact of temperature fluctuations on absorption efficiency and reaction stability, and improving the absorption effect and reliability of the device for hydrogen chloride gas.

The application relates to the technical field of food safety detection, and discloses a sample heating control method and device for detecting sulfur dioxide in food and medicinal materials. The method is based on a heating module and a distillation flask, and a heat-resistant medium is arranged between the heating module and the distillation flask, and the method comprises the following steps: based on a sample detection instruction, the heating power of the heating module is controlled; a part of the distillation flask containing the sample is a first part, and a part of the distillation flask not containing the sample is a second part; the heating module provides first heat energy for the first part, and the first heat energy is used for keeping the temperature of the sample within a preset target temperature range; the heating module provides second heat energy for the second part through the heat-resistant medium, and the second heat energy is used for keeping the temperature of the second part lower than the volatilization temperature value of dilute hydrochloric acid in the sample. Since the volatilization of dilute hydrochloric acid cannot be eliminated by the current technology, the application can eliminate the volatilization of dilute hydrochloric acid, and improve the accuracy of the result of detecting sulfur dioxide in food and medicinal materials.

This invention provides a molybdenum concentrate circulating roasting apparatus and method, relating to the field of molybdenum concentrate roasting technology. The apparatus includes a controllable roasting reaction unit and an oxidative regeneration roasting unit. The controllable roasting reaction unit mixes molybdenum trioxide powder and molybdenum concentrate powder and roasts them to generate molybdenum dioxide and sulfur dioxide gas. The oxidative regeneration roasting unit oxidizes and roasts the molybdenum dioxide, generating molybdenum trioxide powder or molybdenum trioxide vapor at different temperature ranges. A portion of the molybdenum dioxide prepared by the controllable roasting reaction unit is transported to the oxidative regeneration roasting unit, and the molybdenum trioxide powder prepared by the oxidative regeneration roasting unit is returned to the controllable roasting reaction unit, forming a closed-loop circulation system for molybdenum-based materials.

This invention relates to a method for controlling the heating of a liquid, comprising the following steps: A first heating step: setting a heating temperature X1, and continuously heating the liquid with a heating element; when the liquid reaches temperature X2, the heating element stops heating; wherein, temperature X1 > temperature X2; A second heating step: the heating element intermittently heats the liquid, recording the temperature rise to X21; a temperature prediction model outputs temperature X3, comparing X21 and X3; when X21 ≤ X3 + 1, the heating element continues heating the liquid; when X21 is maintained at X3 ± 2, the time is accumulated; when the accumulated time reaches 15 seconds and X21 ≥ X3, the heating element stops heating; A heat preservation step: setting a heat preservation temperature X4, and recording the liquid heat preservation temperature X22; setting a time period, within which: when X22 ≤ X4 - 1, the heating element heats for 3 seconds; when X22 is maintained at X4 ± 1, the heating element heats for 1 second; when X22 > X4 + 1, the heating element stops heating. This method solves the problems of insufficient temperature control accuracy and large temperature fluctuations during heat preservation.

This invention provides a glass annealing apparatus belonging to the field of glass manufacturing technology. It includes an insulating outer wall forming an outer enclosure structure; a furnace wall forming an inner annealing chamber; a sandwiched partition disposed between the insulating outer wall and the furnace wall; wherein the sandwiched partition is fitted outside the furnace wall to form a molten salt pool, and a heating element is provided within the molten salt pool; the insulating outer wall is fitted outside the sandwiched partition to form a heat insulation chamber; multiple sets of heat-conducting columns are evenly distributed within the molten salt pool, with one end extending into the annealing chamber and the other end extending into the heat insulation chamber; a dual-liquid storage furnace is disposed on one side of the insulating outer wall, filled with heat insulation liquid and cooling liquid, used to selectively introduce heat insulation liquid or cooling liquid into the heat insulation chamber to achieve heat preservation or rapid heat dissipation; lifting components are installed on both sides of the insulating outer wall; a support frame is used to support the glass and move in and out of the annealing chamber with the furnace lid; this apparatus can achieve uniform temperature control and segmented operation switching in the annealing chamber, improving the temperature control accuracy of the apparatus.

The application discloses a device for preparing composite powder by fluidized bed carbonyl gas phase deposition, which comprises a fluidized bed reactor, a feeding bin, a fluidized gas heater, a cyclone separator and a passivation bin.

The invention discloses a giant magnetostrictive ultrasonic knife handle, a temperature control device and a method for achieving temperature control. Through the ultrasonic knife handle comprising the temperature control device in the embodiment of the invention, on the basis of not influencing the rotating machining function of a main shaft, the temperature of the main shaft is controlled; non-contact, dynamic response and closed-loop control temperature management and amplitude stable control are carried out on the giant magnetostrictive ultrasonic knife handle, good engineering realizability and system compatibility are achieved, and stable control over the ultrasonic amplitude and high-reliability operation of the system are simply achieved.