8results about How to "Prevent low temperature" patented technology

This invention discloses a separation process for cold hydrogenation synthesis gas. The synthesis gas exiting the cold hydrogenation reactor undergoes heat recovery and rapid cooling for dust removal. A portion of the condensed chlorosilanes is further cooled by a chlorosilane water cooler and used as the absorbent in the middle of the absorption tower. The circulating mixed gas is cooled by a circulating mixed gas water cooler and then enters the lower part of the absorption tower. Silicon tetrachloride feedstock is then used as the absorbent in the upper part of the absorption tower, while the middle absorbent is cooled chlorosilane. The circulating mixed gas entering from the lower part of the absorption tower achieves separation of the cold hydrogenation product chlorosilane through the middle absorbent chlorosilane and the upper absorbent silicon tetrachloride feedstock. Only circulating water coolant is needed; low-temperature coolants (7°C coolant, -40°C coolant, etc.) are not required for multi-stage condensation of the circulating mixed gas to achieve the separation of the cold hydrogenation product chlorosilane, thus eliminating the need for a dedicated low-temperature coolant system for the cold hydrogenation unit.

The utility model discloses a lithium sulfate solution storage barrel which comprises a stainless steel storage barrel, a heat insulation clamping plate is arranged on the inner wall of the stainless steel storage barrel, a rubber non-slip mat is arranged on the lower side in the stainless steel storage barrel, a solution storage barrel body is arranged above the rubber non-slip mat, and an insulation cover is arranged at the upper end of the solution storage barrel body. The upper top cover is arranged above the stainless steel storage barrel, a rubber sealing piece is arranged on the lower side of the middle of the upper top cover, high-transmittance glass is arranged in the middle of the front end of the stainless steel storage barrel, lifting assemblies are arranged at the lower end of the stainless steel storage barrel at equal intervals, and each lifting assembly comprises an adjusting rod, a movable sleeve rod, a fixing block and a built-in bearing. According to the lithium sulfate solution storage barrel, air isolation is facilitated, the problems of leakage and volatilization are avoided, heat preservation operation can be carried out, the phenomenon of sudden change caused by high temperature or low temperature is avoided, and the practical effect of the device is improved.

The application provides a battery heating system and method for an electric vehicle, the battery heating system comprising a battery, a bus capacitor, a three-level driving circuit, and a midpoint current amplification module, the three-level driving circuit comprising a first vertical tube circuit, a second vertical tube circuit, and a third vertical tube circuit; the bus capacitor comprising an upper bridge capacitor and a lower bridge capacitor, the upper bridge capacitor and an upper bridge part of the first vertical tube circuit, the second vertical tube circuit, and the third vertical tube circuit forming an upper bridge circuit, the lower bridge capacitor and a lower bridge part of the first vertical tube circuit, the second vertical tube circuit, and the third vertical tube circuit forming a lower bridge circuit; the upper bridge capacitor and the lower bridge capacitor being connected to each other and in parallel with the battery, so that a midpoint potential between the upper bridge capacitor and the lower bridge capacitor forms a midpoint current; the midpoint current amplification module being arranged between the midpoint potential and a three-phase circuit of a motor, increasing the midpoint current, so that the current flowing through the battery is increased to heat the battery, thereby solving the energy loss problem of the midpoint current and the preheating requirement of the battery in winter.

The utility model discloses a kind of combined device for producing biogas and generating electricity by biogas feed liquid, it is related to green new energy technical field, and it includes: storage tank, monitoring mechanism, stirring mechanism and feeding mechanism;Monitoring mechanism includes PH monitor, temperature sensor and biogas component sensor;Stirring mechanism includes mounting shaft, screw thread leaf and stirring frame;Feeding mechanism includes storage barrel and weighing sensor.Utilize monitoring mechanism to realize the real-time feedback of PH, temperature and biogas component data, dynamic adjustment fungicide addition amount, effectively reduce artificial intervention, improve fermentation stability, utilize screw thread leaf can axial advance feed liquid, enhance vertical mixing, stirring frame can be radially stirred, break scum layer and promote mass transfer, prevent bottom precipitation, utilize weighing sensor can accurately control microorganism fungicide addition amount, by electromechanical integration design, the efficient closed loop of monitoring-regulation-gas production-power generation is realized, especially suitable for small and medium scale biogas engineering.

The utility model provides an infusion apparatus clamping and fixing device, which comprises a fixing component, a connecting component and a fixing component, the fixing component comprises an upper clamping piece, a connecting piece and a lower clamping piece, the upper clamping piece and the lower clamping piece are mounted on one side of the connecting piece at an interval, the upper clamping piece is matched with an infusion bottle opening, and the lower clamping piece is matched with an infusion tube; the heating assembly comprises a heating sleeve and a displayer, and the heating sleeve is connected to the lower clamping piece. During use, the upper clamping piece clamps a bottle opening part of an infusion bottle, the lower clamping piece clamps an infusion pipeline, the relative positions of the bottle opening of the infusion bottle and the infusion pipeline are fixed, meanwhile, the infusion pipeline is wrapped with the heating sleeve connected to the lower clamping piece, and a resistance wire in the heating sleeve is electrified and heated; according to the device, an infusion bottle and an infusion tube are prevented from falling off, meanwhile, a certain infusion liquid heating function is provided, medical accidents are avoided to a certain degree, meanwhile, the workload of medical staff is relieved, use is convenient, and the function is practical.

The utility model discloses a kind of self-watering poultry egg incubators of fast and accurate humidity adjustment, including the water storage tray being arranged in bottom, the egg supporting assembly being located above the water storage tray and the upper cover of cover, the egg supporting assembly includes isolation tray, the isolation tray has opening part, the opening part is covered with covering part, the motor installation site of the upper cover is fixedly installed second motor, the second rotation axis of the second motor is fixedly connected extruding disc, the extruding disc is equipped with at least one extruding column, the distance between the extruding column and the wall of the motor installation site is less than two times water pipe wall thickness, the water pipe is intermittently extruded by the extruding column, water in the water storage tray is extruded to the moisture diffusion part, one end of the water pipe is connected with the moisture diffusion part of the upper cover, and the other end is communicated with the water surface of the water storage tray, and the combination of the water storage structure, the egg supporting assembly, the regulation and control system and the dismounting structure solves the humidity adjustment problem of traditional incubator.

The invention discloses an indirect evaporative cooling unit, a control method, device and equipment thereof and a storage medium, the control method of the indirect evaporative cooling unit is applied to the indirect evaporative cooling unit, and the indirect evaporative cooling unit comprises a heat exchange core body and a primary side fan. The indirect evaporative cooling unit control method comprises the steps that a first function relation between the air volume provided by a primary side draught fan and the primary side air inlet temperature of the indirect evaporative cooling unit is obtained; obtaining a second function relationship between the lowest rotating speed of the primary side fan and the air volume provided by the primary side fan; according to the first function relation and the second function relation, a third function relation between the lowest rotating speed of the primary side fan and the primary side air inlet temperature is obtained; the real-time primary side air inlet temperature is obtained; and according to the third function relation and the real-time primary side air inlet temperature, the real-time minimum rotating speed of the primary side fan is determined. And the phenomenon of low temperature or high temperature of a machine room when the indirect evaporative cooling unit operates in a scene with large day and night temperature difference can be avoided.

The invention relates to the technical field of chemical engineering, and discloses an automatic combustion device for an aluminothermic reduction method, which comprises a support frame body, the inner side of the support frame body is fixedly connected with a pit furnace, the top of the pit furnace is provided with a driving motor, and the output end of the driving motor is fixedly connected with a driving screw rod; a limiting frame is fixedly connected to the inner top wall of the pit furnace, a threaded block is in threaded connection with the exterior of a driving screw rod, first swing rods are hinged to the periphery of the exterior of the threaded block, a plurality of second swing rods are rotationally connected to the inner side of the pit furnace, and limiting grooves are formed in the outer surfaces of the second swing rods; a sliding block is slidably connected into the limiting groove, and an igniter is installed at the tail end of the sliding block. Through cooperative work of a plurality of igniters, reaction can be started at the same time in different reaction areas, uniform distribution of reaction heat is ensured, the risk of local overheating is reduced, and the efficiency and stability of reduction reaction are remarkably improved.