9results about How to "Avoid temperature changes" patented technology

A power control device controls temperature of an apparatus having a cooling mechanism and a heat generating component. The power control device includes a nonvolatile storage unit that stores information indicating unique characteristics including thermal resistance and thermal capacity of the apparatus for each current of the heat generating component, a current measurement unit configured to measure a current flowing through the heat generating component, a temperature measurement unit configured to measure a current temperature of the heat generating component, and a control unit configured to perform cooling control on the apparatus. The control unit estimates a temperature rise value after a certain delay time based on the current, the temperature, and the information on the unique characteristics, and performs the cooling control on the apparatus based on the estimated temperature after the delay time.

A laser punching device for cigarette tipping paper includes a frame, a punching device, and a lifting and temperature control mechanism. The frame is symmetrically arranged, and a conveying roller assembly is symmetrically arranged between the two sides of the frame. The punching device is fixedly connected to the frame and is located between two groups of conveying roller assemblies. The conveying roller assembly is used to convey the tipping paper. The lifting and temperature control mechanism is fixedly connected to the frame and is located below the punching device. The present invention can be adjusted according to the actual needs of the tipping paper punching process through a liftable receiving mechanism, provide support during punching, and can be flexibly lifted and lowered after the punching is completed, thereby avoiding the problem of traditional lining plates continuously generating friction during the movement of the tipping paper. The introduction of the preheating component and the cooling component of the present invention effectively reduces the thermal stress of the material caused by the temperature difference, reduces the damage of the tipping paper during the laser punching process, reduces the quality problems such as irregular hole edges, changes in hole size and shape, and cracking, and improves the smoothness of the production process.

The invention discloses a high-temperature and high-pressure gas-containing turbine experimental device, comprising a dynamometer connected to a hydraulic turbine, a liquid storage tank, a liquid supply tank with an electric heating tube, a pressure-stabilizing tank, a gas storage tank, a hot water heat pump unit with a tube bundle heat exchanger, an expansion tube made of a magnetophilic metal, and an electromagnetic mixing device, wherein the pressure-stabilizing tank is placed on a vertically adjustable lift; the electromagnetic mixing device is composed of a magnetic wheel and a magnetic component matched with the magnetic wheel, and the magnetic component is externally connected to a power supply; the magnetic wheel is placed in the inner cavity of the expansion tube, and the magnetic component is sheathed on the periphery of the expansion tube. The device can be used to study the flow of gas-containing hydraulic turbines under high temperature and high pressure and the working mechanism of gas-containing hydraulic turbines.

The utility model discloses a fuel oiling machine calibrating device, and belongs to the technical field of oiling machine calibrating equipment. The fuel oil temperature adjusting device overcomes the defects that in the prior art, a fuel oil temperature adjusting device in a fuel oil dispenser calibrating device is complex in structure and high in cost. The device mainly comprises an inner tank and an outer tank, the inner tank is arranged in the outer tank, the outer tank comprises an outer shell and an inner shell, an outer heat preservation cavity is formed between the outer shell and the inner shell, a heat preservation body is installed in the outer heat preservation cavity, an inner heat preservation cavity is formed between the inner shell and the inner tank, and a first oil injection pipe communicated with the inner heat preservation cavity is installed at the top of the outer tank. A first oil discharging pipe communicated with the inner heat preservation cavity is installed at the bottom of the outer tank, a first valve is installed on the first oil discharging pipe, a verification cavity for containing fuel oil is formed in the inner tank, a liquid level pipe and a second oil filling pipe which extend upwards out of the outer tank are installed at the top of the inner tank, and a second oil discharging pipe which extends downwards out of the outer tank is installed at the bottom of the inner tank. A second valve is mounted on the second oil discharging pipe.

A time-of-flight mass spectrometry device includes: an ion introduction unit; a vacuum chamber connected to the ion introduction unit; a support member provided inside the vacuum chamber; a flight tube having a part of the outer surface supported by the support member and provided inside the vacuum chamber; a temperature sensor provided in the vicinity of a connection portion with the support member of the vacuum chamber; a temperature adjustment element provided in the vicinity of the connection portion; and a temperature control unit that controls the temperature adjustment element based on a measurement result of the temperature sensor.

This utility model discloses a high-temperature sterilization system for an enzyme production line, including a high-temperature instantaneous sterilizer. A stepper motor is fixedly installed on one side of the bottom end of the high-temperature instantaneous sterilizer. The output shaft of the stepper motor is connected to a lifting threaded rod via a coupling. The upper end face of the lifting threaded rod is connected to a top plate via a roller bearing. A guide rod is fixedly installed on both sides of the lower end face of the top plate. A lifting sleeve is fitted on the upper side of the outer surface of the two guide rods. This utility model allows for the cyclic use of two heating inner tanks. When one heating inner tank has just experienced a relatively drastic temperature change inside the high-temperature instantaneous sterilizer, the other heating inner tank can be automatically installed inside the high-temperature instantaneous sterilizer for use. This technical solution can prevent a single heating inner tank from experiencing multiple temperature changes in a short period of time, thereby improving the service life of the heating inner tank.

This invention discloses a method and system for estimating the temperature of a permanent magnet synchronous motor (PMSM) based on offline data. The method includes: constructing a temperature-considered voltage model of the PMSM; acquiring multiple sets of offline data and obtaining the sum and difference of the products of the dq-axis voltage and current under the offline data through calculation and relationship fitting; and combining the difference between the sum and difference of the products of the dq-axis voltage and current under the offline and online data with the temperature-considered PMSM voltage model to calculate the estimated winding temperature and flux linkage temperature. The system includes: a model construction module, an offline data acquisition module, an offline data calculation module, a relationship fitting module, an online data acquisition module, and a temperature estimation module. Using this invention simplifies implementation and storage, ensures that the temperature remains constant during data acquisition, and improves the accuracy of temperature estimation. This invention, as a temperature estimation method and system for PMSMs based on offline data, can be widely applied in the field of PMSM technology.

The invention discloses a frost and fog suppression device and method for an isolation light window in a temperature difference environment, and relates to the technical field of optical adjustment. The suppression device comprises a connecting cylinder, the two ends of the connecting cylinder are open, a gas inlet nozzle is arranged in the connecting cylinder, and the gas inlet nozzle is used for being connected with a gas input system; the observation lens is arranged at one end of the connecting cylinder body; the diaphragm assembly is installed at the other end of the connecting cylinder body, and the diaphragm assembly can control the size of an opening of the connecting cylinder body; wherein in the working state, one end, provided with the observation lens, of the connecting cylinder is sealed and fixedly connected with a flange of an environmental test box, and in the state that the diaphragm assembly is closed, damping can be applied to gas output from the interior of the connecting cylinder, so that frost dew is effectively inhibited, and meanwhile, the stability of the observation lens is improved. The change of the internal temperature of the environment test box is avoided; and the observation effectiveness is ensured. The suppression method is based on the suppression device.

The invention provides a hydrogen storage container which comprises a first barrel assembly, a second barrel assembly and a hydrogen storage device. A vacuum cavity is formed in the second barrel assembly, the first barrel assembly is arranged in the vacuum cavity, and a gap is formed between the second barrel assembly and the first barrel assembly; one end of the first connecting assembly is hinged to the first barrel assembly, and the other end of the first connecting assembly is hinged to the second barrel assembly; one end of the second connecting assembly is hinged to the first barrel assembly, and the other end of the second connecting assembly is slidably hinged to the second barrel assembly; the first connecting assembly and the second connecting assembly are arranged at intervals in the axial direction of the first barrel assembly. The hydrogen storage container has a good heat insulation effect and relatively high structural stability, and is beneficial to reducing the occurrence probability of leakage accidents and improving the safety of hydrogen storage and transportation.