61results about How to "Constant working temperature" patented technology

The invention relates to a light frequency reference fiber femtosecond light frequency comb with tunable broadband repetition frequency. The comb comprises a hybrid-locking-based erbium-doped fiber femtosecond laser device with tunable broadband repetition frequency, a reference laser locking system based on piezoelectric ceramic, a reference laser locking system based on a pumping current, a computer control system and a temperature control system, wherein the erbium-doped fiber femtosecond laser device is an annular chamber structure and is internally added with an electric control optical delay wire, and the repetition frequency of the laser device can realize continuous tunable broadband. For realizing light frequency reference femtosecond pulse output, rapid and slow piezoelectric ceramics and the pumping current are employed to cooperatively control beat frequency of the femtosecond laser device and two reference laser devices, the rapid piezoelectric ceramics fixing structure which is easy to use is designed, and a temperature control box is further designed to acquire stable beat frequency; the light frequency reference fiber femtosecond light frequency comb has advantages of light frequency reference output, tunable broadband repetition frequency, good stability and small size and further has application potential in the industrial environment.

In a method for heating up the intake air of an internal combustion engine during the preglow phase or start-up phase, the heating power is controlled by a control unit of the engine electronics as a function of the operating data of the internal combustion engine. During the preglow phase, the heating element is initially supplied with full current until the heating element reaches its reference temperature. After the reference temperature has been reached and until the start-up phase, a post-heating phase begins in which the heating element is kept at a constant temperature by way of a relatively low power. During the start-up phase, in a first time period, the heating element is switched off, and in a second time period in which the speed of the internal combustion engine is raised to the starting speed, the heating element is switched on again.

The invention discloses a phase-change material energy-storage based cooling apparatus for a power battery. The cooling apparatus comprises a power battery, a cooling liquid circulation module and a refrigeration module, wherein the power battery is connected with the cooling liquid circulation module to form heat exchange circulation; heat exchange is carried out between the cooling liquid circulation module and the refrigeration module; the power batter is electrically connected with the cooling liquid circulation module and the refrigeration module separately; and according to the phase-change material energy-storage based cooling method for the power battery, the to-be-cooled power battery pack is cooled by the phase-change material energy-storage based cooling apparatus for the power battery. The cooling apparatus has the advantages of reasonable structure, high temperature control precision, high radiation capability, convenience in use, low power consumption and small size, and is more applicable to popularization and application in the temperature control of the power battery pack.

An X-ray diagnosis apparatus is disclosed which includes two different cooling circuits and a single cooling portion. A first heat transfer medium is circulated for absorbing heat generated in the X-ray generator. A second heat transfer medium is circulated for absorbing the heat generated in the planer type X-ray detector. A heat exchanger is provided for exchanging heat between the first heat transfer medium and the second heat transfer medium. The cooling portion is coupled to the cooling circuit carrying the second heat transfer medium in order to cool the second heat transfer medium.

The invention provides an initiative absorbing type flammable and explosive gas detection alarm. The alarm comprises a machine frame, an initiative gas absorbing device, a gas inlet pipe, a gas detection device, a control device and a warning device, wherein the gas inlet pipe is fixed on the machine frame, a gas inlet of the gas inlet pipe is larger than a gas outlet of the gas inlet pipe, the initiative gas absorbing device is arranged on the gas inlet of the gas inlet pipe, the gas detection device is arranged on the gas outlet of the gas inlet pipe, the gas detection device is electrically connected with the control device, and the control device is electrically connected with the warning device. The initiative absorbing type flammable and explosive gas detection alarm can absorb gas initiatively, and therefore the problems that gas molecule diffusion is low in speed and random in direction during flammable and explosive gas detection are solved; due to the fact that a semiconductor gas sensitive device is adopted to serve as the gas detection device, sensitivity is high; due to the fact that an automatic amplifying circuit is added to amplify signals of the semiconductor gas sensitive device, the sensitivity of the instrument is greatly improved; furthermore, a thermostat is adopted to overcome the influence of temperature on the semiconductor gas sensitive device.

The invention discloses a fractal micro-channel bipolar plate used in a proton exchange membrane fuel cell and a processing method thereof. The fractal micro-channel bipolar plate comprises a cathode flow field plate (10), an anode flow field plate (11), a proton exchange membrane (8), a cathode diffusion layer (7) and an anode diffusion layer (9); an upper flow field plate (1) and a lower flow field plate (5) are equipped with fractal micro-channels each of which is provided with two branches in the next channel; bifurcation angle phi of single branch shape of the fractal micro-channel flow field structure equals pi. The fractal micro-channel structure is processed by an etching technology, and through holes on the separation membrane are processed by a laser technology. The fractal micro-channel bipolar plate used in the proton exchange membrane fuel cell can ensure that reaction gas is distributed to every part of an electrode, the fractal micro-channel structure can ensure uniform temperature distribution in the cell and small pressure drop, keep a certain linear velocity of the reaction gas in the flow field, effectively discharge the water which is generated by the electrochemical reaction, and enhance the efficiency of the fuel cell.

The invention discloses a power battery heat management system based on metal plate type pulse heat pipes. The power battery management system comprises a power battery support, a battery module box body and a box body top cover, wherein the power battery support comprises a plurality of single metal plate type pulse heat pipes, and two or more than two single batteries which are connected in series or in parallel are placed on the support. The power battery management system is characterized in that the surface of each single battery can be in close contact with the metal plate support, the pulse heat pipe in the metal plate is bent in a reciprocating way and is provided with an evaporation end and a condense end, the evaporation end is a part where the metal plates and the surfaces of the batteries are in contact, and the condense end is a part downwards extending from the metal plates, is arranged under the surfaces of the batteries and can play a role in supporting a battery module; and further, wind gaps with the same size and at the same position are formed below the metal plates and the box body and can be used for timely air drawing so that the heat of the condense end of the pulse heat pipe can be dissipated through forced convection. By the system, the technical problems of high-temperature heat dissipation, energy cyclic utilization and the like of a power battery can be efficiently and timely solved; the pulse heat pipes and the support are integrated, the space is fully saved, and the system is suitably used for various large-, medium- and small-sized apparatus depending on electrical driving and has very board market space.

The invention relates to precise thermal pressure processing equipment, in particular to a heat insulating device and a precise hot press using the device. The heat insulating device is specially used for heat insulation connection between a sliding seat and a hot press head of the precise hot press. The hot press comprises a fixed seat and a sliding seat, wherein the sliding seat is connected with a guide pillar through a guide component. The heat insulating device is characterized by comprising a water cooling plate. The invention provides the heat insulating device and the precise hot press using the device.

The invention discloses an intelligent analyzer and a detection method for a standard state dry basis, and belongs to the field of gas detection analyses. The intelligent analyzer comprises a sensing and measuring unit, a heating control unit, a data collecting and processing unit and an output display communication unit, wherein the heating control unit and the sensing and measuring unit are positioned in a same closed cavity chamber; and the peripheries of the heating control unit and the sensing and measuring unit are separated from the data collecting and processing unit and the output display communication unit through a heat insulating plate. The detection method comprises the following steps of: demarcating zero gas, and detecting sample gas, so as to obtain a wet basis volume value under a nonstandard state of measured gas; measuring parameters of fume, and changing the parameters into volume values under a standard state and converting to be a value of a standard state dry basis concentration. According to the intelligent analyzer and the detection method, the gaseous pollutant standard state dry basis concentration is directly output, the service life of the analyzer is prolonged, and functions of diagnosing the running state of the analyzer can in real time can be realized; and the detection method solves the problems that the condition that measured values of the analyzer can meet the China environmental standard, the condition that an instrument is easy to damage under a complicated working condition, and the reality reliability of the measured values of the analyzer are ensured, and the like can be solved.

The invention discloses an explosion-proof electric control hydraulic clutch, and relates to the technical field of hydraulic clutches. The explosion-proof electric control hydraulic clutch comprisesa power input component, an output component, a shell, a hydraulic control valve block and an oil supply rotating joint. The two states of clutching and meshing are available during use. Under the clutching state, an electromagnetic valve is powered off, and no power transmission exists between an input shaft and an output shaft. Under the engaging state, the electromagnetic valve is powered on, and power transmission exists between the input shaft and the output shaft. The explosion-proof electric control hydraulic clutch adopts a mechanical, electric and liquid integrated design and integrates control, execution, cooling and lubrication. Through integrated design, the working stability and the transmission efficiency of the clutch are improved, the daily maintenance cost is greatly reduced, and the mounting space is saved. The explosion-proof electric control hydraulic clutch is simpler and more convenient and flexible to use. Because wet work is adopted, a lubrication cooling deviceis integrated, and a closed structure is adopted, sparks are not generated during high-speed dynamic engagement, the working temperature is constant and cannot be high, and the explosion-proof performance is achieved.

The invention discloses a distant range laser infrared night visual camera, which comprises a camera, a CCD (Charge-Coupled Device) image sensor, a high-speed DSP (Digital Signal Processor), a radiator, an infrared illumination module, a power supply management and a power supply, and is characterized in that the infrared illumination module consists of a thrice optical lens and an infrared laser illuminator; the camera is connected with the CCD image sensor; the CCD image sensor is connected with the high-speed DSP; the infrared illumination module is also connected with the DSP; the infrared laser illuminator is connected with radiator; and the power supply powers all the modules and components via a power supply management module. According to the invention, the tertiary optical lens focuses the laser light beam of the infrared laser illuminator to enable the infrared laser illuminator to achieve distant range video monitoring under dark environments without visible light and shimmer.

The invention relates to a micro heating disk and a manufacturing method thereof as well as a micro heating disk system. The micro heating disk comprises a substrate, an insulating supporting layer, aresistance heating layer and a temperature sensing unit, wherein the annular temperature sensing unit is arranged at the periphery of the substrate. According to the micro heating disk disclosed by the invention, by the arrangement of the annular temperature sensing unit arranged at the periphery, a contact area of the temperature sensing unit and the environment is enlarged, and the accuracy ofsensed ambient temperature is high; the temperature sensing unit works at room temperature, so that the long-term stability is high; meanwhile, an annular metal layer can effectively shield the influence of external electromagnetic interference on the work of a micro heating disk chip; furthermore, the temperature sensing unit can precisely sense a temperature change of a surrounding environment in real time and automatically transmit the acquired temperature to control heating power of a heating region to stabilize the working temperature of the chip; the micro heating disk is convenient andquick.

A sealing component constructed of hydrogenated nitrile butadiene rubber (“HNBR”) compound for use in high temperature, high speed and high angle applications is disclosed. The disclosed HNBR material may also be reinforced with fibers for added stiffness and stability.

Multi-module weighing system with a holding structure serving to receive a plurality of weighing modules which are rigidly connected to each other in a given spatial arrangement and are operable independently of each other, wherein each weighing module comprises at least one load receiver, wherein the multi-module weighing system is connected to a temperature control device which is in thermal connection with each of the weighing modules.

The invention discloses a power cell module with a reinforced heat radiation function. The power cell module comprises a cell module case, a case top cover and a high heat conduction phase change sheet. The sheet is prepared from several high heat conduction graphite films and a composite material of a composite phase change material and high heat conduction plastic through physical or physical compression. The sheet is provided with several pores arranged in an array and is used for a single cell implemented by multiple series connection or parallel connection. The surface of each single cell tightly contacts with the sheet section so that contact thermal resistance is reduced. Through physical or physical compression, the graphite films and the composite material are pressed to form the sheet in a sandwich form so that uniformity of the fused graphite films and composite material is realized. The sheet is coated with heat-conduction insulative film so that electrical insulating properties of the power cell module and the environment are good.

The invention relates to a catalytic MEMS gas sensor and a working method thereof. The catalytic MEMS gas sensor comprises a substrate, a first insulating support layer, a resistance heating layer, asecond insulating support layer, a temperature sensing electrode layer, a catalytic material layer and a microcontroller, wherein the first insulating support layer is arranged on the substrate, the resistance heating layer is arranged on the first insulating support layer, and the second insulating support layer covers the resistance heating layer; the temperature sensing electrode layer is arranged on the second insulating support layer, and the catalytic material layer is attached to the upper parts of the temperature sensing electrode layer and a heating working region of the second insulating support layer; and the microcontroller is arranged on the substrate. The working method comprises the steps that the microcontroller is controlled to obtain the heating power and the heating temperature of the heating resistance layer and the temperature sensing electrode layer; the working temperature of the resistance heating layer is controlled to be constant; and the gas sensor periodically works at a constant low temperature, a constant medium temperature and a constant high temperature. According to the catalytic combustion type MEMS gas sensor and the working method thereof provided by the invention, the sensor is short in response time, low in power consumption and low in cost.

The invention relates to a constant-temperature probe which comprises a gas detection module, a microcomputer processing module, a temperature detection module and a heating voltage control module, wherein the temperature detection module is connected with the gas detection module and the microcomputer processing module. According to the constant-temperature probe, the temperature detection module detects the temperature inside the probe and then transmits temperature information of the probe to the microcomputer processing module, the microcomputer processing module processes the temperature information of the probe and transmits a comparison result to the heating voltage control module, the heating voltage control module can regulate the magnitude of feedback voltage according to comparison information transmitted by the microcomputer processing module, and then the heating voltage control module can transmit the feedback voltage to the gas detection module, so that the working temperature of the probe is controlled, the constant working temperature of the gas detection module is ensured, the influence of gas temperature change on pneumatic concentration detection accuracy is eliminated and the stability of the probe is ensured.

A rail vehicle has a vehicle frame, supported on track undercarriages, and a vehicle superstructure with at least one driver's cabin. A motive drive is provided and has an electric motor supplied by an electric energy store. In this, it is provided that the energy store has a tempering by use of a liquid dielectric, and that the vehicle superstructure includes a compartment, separated from the driver's cabin, in which the electric energy store is arranged within at least one fire protection cabinet with a dielectric tank located there above.