19results about How to "Suppression temperature" patented technology

The invention provides a solar-powered motor protection method and system, and is applied to the field of equipment data processing. The output torque of the motor is adjusted in real time according to load change by using a dynamic torque compensation algorithm, normal operation of the motor can still be maintained under the condition of low electric quantity, sudden power failure caused by electric quantity fluctuation or load change is avoided, work interruption caused by power mismatching of the motor can be effectively reduced, and the service life of the motor is prolonged. Meanwhile, loads are dynamically distributed, power management is optimized, it is ensured that all parts of the system operate under proper voltage, current and torque, overload or long-time low-efficiency work is avoided, a multi-layer protection strategy is applied to carry out delay protection on the motor, harmonic interference can be effectively restrained, temperature rise can be effectively controlled, and the service life of the system is prolonged. And standby power supply support is provided, so that safe transition of the motor can be ensured under the condition of current fluctuation, and unnecessary shutdown is reduced.

The invention discloses a magnetic suspension pump rotor space attitude detection method and device. Four Hall sensors are orthogonally installed in two planes under an air gap of the magnetic suspension pump respectively, and voltage signals generated in different planes and different directions when a rotor moves are detected through the Hall sensors. Hall signals, collected by a plane closer to the rotor, in x and y directions are subjected to difference and arc tangent to obtain a rotation angle of the rotor in the radial direction; hall signals, collected by the two planes, in the x direction and the y direction are subjected to information obtaining and processing through a four-sensing second-order differential amplification circuit, the difference value of Hall voltage signals, generated by inclination of the rotor, in the x direction and the y direction is obtained, then axial displacement generated when the rotor inclines is obtained, and the inclination angle of the rotor around the x plane and the y plane is obtained according to the geometrical relationship. The method and the device provided by the invention are simpler in structure and very high in data calculation accuracy and efficiency.

This invention relates to the field of cooling systems for plastic technology equipment, specifically a cooling system for a recycled plastic extruder. This system is applied to a single-screw recycled plastic extruder and addresses the problems of large fluctuations in the extrusion process, uneven temperature distribution, and low precision in cooling control. It constructs a multi-dimensional quantitative evaluation and closed-loop coupled control system. The system simultaneously collects axial and radial temperature distribution data of the extruder's flow channel and cooling medium operating data, respectively quantifying and calculating thermal imbalance indices, temperature field uniformity indices, and medium dynamic stability indices. A multi-dimensional coupling matrix is ​​constructed by normalizing and fusing these three types of parameters, and the cooling system control fluctuation value is obtained through matrix feature calculation. Finally, by combining the global fluctuation value and local cooling compensation parameters, a dynamic adjustment command adapted to the extruder flow channel characteristics is generated, achieving precise, adaptive closed-loop control of the cooling system, suitable for the complex extrusion process of recycled plastics.

The invention discloses a fire extinguishing agent special for a lithium ion battery fire as well as a preparation method and application thereof, and belongs to the technical field of lithium ion battery fire extinguishing agents. The main component of the special fire extinguishing agent for the lithium ion battery fire comprises a 16F fluorocarbon, and a preparation method of the 16F fluorocarbon comprises the following steps: (1) fluorination reaction: mixing cyclohexanone, silver fluoride and a catalyst, and reacting under the protection of ice bath and inert gas; (2) epoxidation reaction: adding the suprapoeia acid salt and silver metal particles, heating in a water bath, and fully reacting; and (3) further fluorination: taking the obtained product as a raw material, repeating the steps (1) and (2), and then purifying to obtain the product. The preparation method has the beneficial effects that the obtained C8F16O fluorocarbon has excellent high insulation performance, and does not cause short circuit or other electrical faults; a large amount of heat can be quickly absorbed, and the fire source temperature is effectively reduced. Due to the characteristic, the fire extinguishing efficiency is improved, and the heat radiation influence of a fire disaster on the surrounding environment is reduced.

The application provides a lithium battery step utilization energy storage device, and relates to the field of energy storage equipment.The lithium battery step utilization energy storage device comprises a base, a lithium battery cabinet arranged on the base, and a solar panel arranged above the lithium battery cabinet, and further comprises a rainwater collecting and heat dissipation system.The rainwater collecting and heat dissipation system comprises a rainwater collecting tank, a water-cooling heat dissipation assembly, and a driving assembly.The rainwater collecting tank is arranged below the solar panel, the top of the rainwater collecting tank is connected with the solar panel to collect rainwater, and the rainwater collecting tank is rotatably arranged.The water-cooling heat dissipation assembly is arranged on the lithium battery cabinet.When the temperature of the lithium battery abnormally rises, the system can automatically start within tens of seconds, and the stored rainwater is rapidly poured into the heat dissipation assembly, the water has a large heat capacity, and the heat dissipation assembly can effectively and rapidly absorb heat, so that the temperature rise of the lithium battery is effectively and rapidly inhibited, the chain reaction of thermal runaway is broken, and valuable time is gained for fault treatment.

The present invention provides a discharge lamp and a method for manufacturing an electrode for a discharge lamp. In the discharge lamp, heat is effectively dissipated to suppress the electrode temperature. An internal space (40) is formed to be sealed inside an electrode (30) of the discharge lamp (10), and heat dissipation parts (50A, 50B) facing each other are formed along an electrode axis (X).

This invention discloses a power adaptive tracking and feeding PID control method and system for a high-purity quartz melting furnace, relating to the field of high-purity quartz melting technology. The method includes: S1, real-time data acquisition; S2, preprocessing; S3, adaptive tracking; S4, segmented PID feeding; and S5, execution feedback. This invention employs an adaptive tracking mechanism to adjust the power output in real time during furnace operation to meet the dynamic demands of temperature changes within the furnace. Compared to traditional fixed PID control, this method can dynamically adjust the control strategy according to different stages of the melting process, effectively suppressing temperature and power fluctuations. This adaptive power control adjusts based on real-time operating data, avoiding the lag and over-adjustment inherent in traditional PID methods, ensuring precise temperature control and efficient energy utilization during the high-purity quartz melting process, thereby improving the stability of the melting process and reducing unnecessary energy waste.

Provided is a power conversion device including a plurality of switching elements connected in parallel, the power conversion device suppressing temperature imbalance due to delay time variation and temperature imbalance due to on-voltage variation. A power conversion device including a plurality of switching elements; a temperature sensor that detects temperatures of the plurality of switching elements; a carrier frequency adjusting unit that adjusts carrier frequencies of the plurality of switching elements; a delay time adjusting unit that adjusts turn-on times or turn-off times of the plurality of switching elements; and a gate voltage adjusting unit that adjusts on-voltages of the plurality of switching elements, in which the temperature sensor detects a change amount of a temperature difference between the plurality of switching elements before and after carrier frequency adjustment by the carrier frequency adjusting unit, and the delay time adjusting unit adjusts turn-on times or turn-off times of the plurality of switching elements on the basis of the detected change amount of the temperature difference.

The invention discloses an environment direct disturbance suppression system for supporting shock insulation stability performance. The environment direct disturbance suppression system comprises a greenhouse, a control module, an upper high-temperature cold source module, a lower high-temperature cold source module, an air conditioning equipment module and an environment monitoring module, the greenhouse is divided into an upper greenhouse cabin and a lower greenhouse cabin; the upper greenhouse cabin covers a seismic isolation platform surface of the seismic isolation platform, and the lower greenhouse cabin covers an underground part of the seismic isolation platform; the environment monitoring module is controlled by the control module to collect environment parameters in the upper greenhouse cabin and the lower greenhouse cabin in real time, and transmits the collected temperature of the upper greenhouse cabin and the lower greenhouse cabin to the control module; the control module controls the air conditioning equipment module and the upper high-temperature cold source module to regulate and control the internal temperature of the upper greenhouse cabin in a time-sharing manner based on the temperature of the upper greenhouse cabin; and meanwhile, the control module controls the lower high-temperature cold source module to regulate and control the internal temperature of the lower greenhouse cabin based on the temperature of the lower greenhouse cabin. And finally, the temperature field in the greenhouse is uniformly distributed, so that the influence of temperature fluctuation and airflow disturbance on the seismic isolation platform is inhibited.

An eye flushing device and safety protection equipment, comprising: a liquid supply pipeline comprising a liquid outlet and a liquid inlet; an eye washing nozzle in communication with the liquid outlet of the liquid supply pipeline; and a heat preservation tube arranged in the liquid supply pipeline and sealedly connected with the inner wall of the liquid supply pipeline at the first end and the second end. The heat preservation tube is arranged in the liquid supply pipeline and sealedly connected, the liquid in the liquid supply pipeline passes through the heat preservation tube and then enters the eye washing nozzle, the heat loss of the liquid is reduced, the influence of the external environment on the liquid in the liquid supply pipeline is reduced, the heat preservation effect of the eye flushing device is improved, the liquid in the safe temperature range is favorably flushed on the eyes of the patient by the eye washing nozzle, the comfort and safety of the eye flushing device are improved, and the secondary injury of the eye flushing device to the patient is inhibited.

The present invention relates to the technical field related to circular saw blades, and discloses a circular saw blade type hand-held electric saw, comprising a hand-held body, a power motor is installed in the hand-held body, a circular saw blade is rotatably installed in the hand-held body, a saw blade processing device is detachably installed in the hand-held body, the circular saw blade is arranged in the saw blade processing device, the saw blade processing device comprises a mounting ring, and a half-package processing device is installed in the mounting ring; the circular saw blade type hand-held electric saw of the present invention is equipped with the saw blade processing device through the saw blade processing device, and the saw blade processing device is mounted on the outside of the mounting block. During the working process, the saw blade rotates and cuts at a high speed and the metal conducts heat, so that the surface of the circular saw blade generates high temperature, and cutting debris is easily adsorbed on the saw blade surface and tooth structure at high temperature.

The invention provides a multi-cavity high-pressure-bearing aluminum profile section speed extrusion forming method, and belongs to the technical field of aluminum profile machining.The method comprises the steps that the metal flowing state and interface evolution characteristics are calculated in real time by establishing a heat flow coupling phase field evolution model, constitutive parameters are obtained through a fractional order viscoelasticity reverse identification model, and the heat flow coupling phase field evolution model is established; the section speed switching opportunity prediction model based on artificial intelligence outputs the optimal switching moment and the acceleration adjusting coefficient, an S-shaped speed curve adjusting program is started to achieve smooth transition, and temperature fluctuation and extrusion force fluctuation are restrained by adjusting the cooling water flow and closed-loop compensation control in advance. And reverse design optimization is realized in cooperation with a mold elastic deformation compensation algorithm, and the technical problem that in the section speed extrusion process of the multi-cavity high-pressure-bearing aluminum profile, due to improper speed switching opportunity, coupling instability of a temperature field and a flow field is caused, and consequently the structure of the profile is not uniform is solved.

A battery pack (10) is provided with: a housing body (200) that defines a housing space (250) in which a battery module (100) is housed, a central internal space (260) through which gas generated from the housing space (250) passes, and a plurality of large communication holes (270L) and a plurality of small communication holes (270S) that communicate the housing space (250) and the central internal space (260) with each other; and a pressure relief valve (280) for discharging gas from the central internal space (260) to the external space. The length of a central inner space (260) between the pressure relief valve (280) and each large communication hole (270L) is longer than the length of a central inner space (260) between the pressure relief valve (280) and each small communication hole (270S).

The present invention relates to a control device for an internal combustion engine. When the amount of PM trapped by a GPF reaches a predetermined amount, a CPU executes a regeneration process for regenerating the GPF. That is, the CPU stops the supply of fuel to any one of cylinders #1 to #4, and on the other hand, increases the amount of fuel supplied to the remaining cylinders. When the temperature of a three-way catalyst becomes higher than a first temperature, the CPU increases the injection amount in order to lower the temperature of the exhaust gas. When the temperature of the three-way catalyst becomes higher than the first temperature during the execution of the regeneration process, the CPU does not increase the injection amount.

The application discloses a small diesel engine connecting rod stress measurement system based on a strain type pressure sensor and particularly relates to the field of small diesel engine stress measurement, and comprises a follow-up measurement unit integrated on a connecting rod body, which is composed of a multi-source signal synchronous acquisition module, an online processing and compensation module, a stress reconstruction and fusion module and a wireless data transceiving module. The system realizes multi-channel signal synchronous acquisition through strain and temperature sensors arranged at dangerous sections of the connecting rod, adopts an FPGA-driven parallel ADC architecture to ensure sampling synchronism, improves data precision and anti-interference capacity through a dynamic temperature drift compensation and an adaptive filtering algorithm, reconstructs a connecting rod surface dynamic stress distribution field based on a finite element model and a stress mapping matrix, and realizes an adaptive wireless transmission strategy according to a crankshaft phase signal, wherein high stress intervals are preferentially transmitted and low stress intervals are energy-savingly operated. The system has the characteristics of high precision, high reliability and low power consumption.

The invention discloses an energy storage power station thermal management system combining immersed cooling and a core-plate-core sandwich structure and a control method thereof, and belongs to the technical field of lithium ion battery thermal management. Under a low-temperature working condition, an external high-frequency power supply introduces alternating current into a coil in the system before a battery operates normally, and the coil generates an alternating-current magnetic field; and the nanoparticles distributed in the immersion liquid and the liquid absorption core rapidly generate heat under the excitation of the alternating magnetic field, so that the uniform heating of the battery is realized. According to the system, direct immersion type cooling is coupled with cooling of a semi-open liquid cooling plate with a controllable flow channel, the liquid cooling plate is communicated with an immersion cavity, a cooling medium flowing in the inner flow channel of the liquid cooling plate and immersion liquid are the same working medium, and integration of a cooling loop is achieved; the excellent transient heat dissipation capability of direct immersion cooling is utilized, and the advantages of the liquid cooling plate in the aspects of structural integration and operation economy are also considered. And when the usage amount of the immersion liquid is reduced, the comprehensive thermal management target of high safety, high reliability and high energy efficiency of the energy storage system is achieved.

The invention relates to a clean, efficient and stable ammonia humidification combustion power generation system and method, and belongs to the technical field of ammonia fuel clean and efficient combustion power generation. The ammonia fuel supply unit is used for providing fuel for the staged combustion chamber unit; the air supply unit is used for providing air for the staged combustion chamber unit; the oxygen supply unit is used for providing oxygen for the staged combustion chamber unit; the water supply unit provides water for the staged combustion chamber unit; the heat recovery unit recovers heat energy of the staged combustion chamber unit; and the staged combustion chamber unit does work to generate power. Water is adopted as a diluent, a humidification strategy far away from a flame root reaction area is adopted, the system mass flow rate is increased, the temperature of a combustion chamber is effectively restrained, the ammonia combustion power generation efficiency is improved, and meanwhile the thermal load of turbine machinery is reduced; ammonia oxygen-enriched on-duty flames are arranged at the roots of ammonia / air main flames, and the ignition characteristic of the ammonia flames and the stability of a power generation system are improved.

This invention relates to the field of pulverizing system operation optimization, specifically to an intelligent optimization method for pulverizing system operating parameters based on natural gas blending. When the natural gas blending ratio changes, this invention calculates the target coal feed rate required to maintain a constant total boiler load based on the changed blending ratio. The current coal feed rate is then gradually adjusted according to a set adjustment amount. Based on the coal feed rate of each adjustment cycle, combined with the current mill outlet temperature and the initial air-coal ratio obtained from the pulverizing system's backend database, the corresponding primary air volume is determined, and the corresponding gas mass flow rate is controlled for blending. Upon reaching the set number of adjustments, the total boiler load for subsequent adjustment cycles is collected. Combined with the predicted theoretical total boiler load at the target coal feed rate, the theoretical load deviation is calculated, and the loss coefficient caused by the primary air volume is analyzed. Based on the loss coefficient, the initial air-coal ratio is updated, the coal feed rate is adjusted to the target coal feed rate, and the primary air volume is adjusted according to the updated air-coal ratio.