453results about "Thermometers using material expansion/contaction" patented technology

An internal heating early warning method and system for a GIS device isolation switch. The heating early warning method comprises: acquiring an internal gas temperature, an original absolute pressure, and an ambient temperature of at least one GIS device isolation switch, and a three-phase load current of the isolation switch (S11); on the basis of the original absolute pressure, the ambient temperature, the gas temperature, and the three-phase load current, calculating a plurality of characteristic quantities of the pressure, wherein the plurality of characteristic quantities comprise a month-on-month growth quantity, a month-on-month growth rate, a year-on-year growth quantity, a year-on-year growth rate, an interphase difference quantity, an interphase difference rate, a growth quantity compared with an adjacent gas chamber, and a growth rate compared with the adjacent gas chamber (S21); making a severe heating anomaly determination, comprising: if an anomaly condition is satisfied, sending an early warning signal for a severe heating defect (S31); determining the correlation between the original absolute pressure and the ambient temperature, if the original absolute pressure is correlated to the ambient temperature, calculating the ambient compensation pressure after the ambient temperature is compensated, and using the ambient compensation pressure to recalculate the plurality of characteristic quantities of the pressure, and if the original absolute pressure is not correlated to the ambient temperature, determining the correlation between the pressure and the three-phase load current, and if the pressure is not correlated to the three-phase load current, making a general heating anomaly determination (S41); and making a general heating anomaly determination, comprising: if an anomaly condition is satisfied, sending an early warning signal for a general heating defect (S51).

The invention relates to the technical field of power modules, and discloses a power module detection method and system based on temperature measurement, and the method comprises the steps: obtaining the temperature data of an air inlet outside a power module, in a heat dissipation channel, other units outside the heat dissipation channel, and beside the air inlet, and calculating an air inlet temperature value, a channel temperature value, a unit temperature value, and an inlet temperature value; and calculating a curve matching value of the two thermal difference temperature value change curves according to the thermal difference temperature values, the first thermal difference temperature value and the second thermal difference temperature value, comparing the curve matching value with a preset reference matching value, and if the curve matching value is smaller than the preset reference matching value, performing early warning prompt. The temperature conditions of different positions of the power module are comprehensively considered, the detection deviation is reduced, the accuracy of temperature state detection is improved, the temperature abnormal change trend is captured, potential faults are found in advance, and reliable guarantee is provided for stable operation of the power module.

Technologies for thaw detection are described. The system includes a sensor included in a container, a sensor blocking mechanism, and a detector. The container includes a fluid. The sensor blocking mechanism prevents detection of the sensor while a portion of the fluid in the container is in a frozen state. The detector is configured to detect the sensor while the portion of the fluid in the container is in a thawed state. The thawed state deactivates the sensor blocking mechanism by activating a movement of the sensor.

The invention relates to the technical field of bus ducts, in particular to an intelligent bus duct with a remote monitoring function, which comprises an insulating protective shell, a bus bar is arranged in the insulating protective shell, heat dissipation grooves are formed in the upper surface and the lower surface of the insulating protective shell, and a heat dissipation fin mounting assembly is arranged outside the bus bar; the cooling device has the beneficial effects that the cooling fin mounting assembly is provided, special hollow shapes are set by utilizing the special-shaped hollow cooling fins, cooling liquid can circulate in the cooling fins, air flow can circulate in the cooling ventilation grooves in the two sides, and the air-cooling cooling assembly is matched with the liquid-cooling cooling assembly, so that the cooling effect is improved; air cooling and liquid cooling are combined to replace high-energy-consumption semiconductor refrigeration, precise temperature monitoring and intelligent control are carried out in cooperation with an intelligent monitoring equipment assembly, a complete heat dissipation system is started only when necessary, the heat dissipation intensity is dynamically adjusted, and unnecessary energy consumption is reduced.

The present disclosure relates to a system (100) for acoustically detecting a temperature change, the system (100) comprising: at least one conversion element (10) for converting a temperature change into a characteristic sound; an acoustic sensor (40) configured to be mechanically connected to the structure (50) at a distance from the at least one conversion element (10); and a processor (42, 62) coupled to the acoustic sensor (40), in which the at least one conversion element (10) comprises an actuation portion (20) having at least one material having thermal expansion properties such that a change in temperature causes a movement of the actuation portion (20) that causes the conversion element (10) to generate a characteristic sound and conduct the characteristic sound into the structure (50), the acoustic sensor (40) is configured to record a characteristic sound generated by the conversion element (10) as a structural sound propagating through the structure (50), and the processor (42, 62) is configured to detect a temperature change based on the characteristic sound recorded by the acoustic sensor (40).

There is provided an assembly for regulating temperature in a system for supplying current to a superconducting load. The assembly may comprise a thermal switch positioned between a cryocooler and a length of superconducting material comprised in a loop of superconducting material in which a voltage is generated by a flux pump. The cryocooler may additionally be thermally connected to the superconducting load. The thermal switch may be configured such that the cryocooler cools the superconducting load to a lower temperature than the length of superconducting material. The temperature to which the length of superconducting material is cooled may be substantially close to a critical temperature of the length of superconducting material. Forms of the technology also relate to the thermal switch and the flux pump.

The invention provides a temperature tactile collaborative response flexible pressure sensor and a preparation method thereof, and the sensor comprises an upper electrode which is used for transmitting a capacitance or resistance signal; the conductive nano composite material layer is used for forming a conductive path with the upper electrode and transmitting a resistance signal; the temperature sensitive insulating layer is arranged between the upper electrode and the conductive nano composite material layer and is used for preventing the upper electrode from being in contact with the conductive nano composite material layer; and the conformal electrode microstructure array is arranged below the conductive nano composite material layer and is used for forming a capacitor with the upper electrode and forming a conductive path with the upper electrode and the conductive nano composite material layer. Whether the environment temperature reaches the dangerous temperature or not is determined according to the type of an electric signal output by the sensor, and active adjustment of touch is achieved through temperature stimulation.

The invention relates to the technical field of sealing detection, in particular to a toluene cooler sealing detection assembly which is installed on the outer wall of the connecting position of a pipeline and a cooler and comprises a positioning belt, a fixing belt, a supporting belt, a covering belt, a sealing performance detection assembly and a strain gauge. The inner wall of the fixing belt is connected with the outer wall of the positioning belt, the supporting belt is wound on the outer wall of the cooler, the left side and the right side of the inner wall of the covering belt are connected with the outer wall of the supporting belt and the outer wall of the fixing belt respectively, and the positioning belt, the fixing belt, the supporting belt and the covering belt are matched with the pipeline and the cooler to form a cavity. The sealing performance detection assembly is connected between the positioning belt and the fixing belt, the strain gauge is connected to the sealing performance detection assembly, and the left side of the sealing performance detection assembly is located in the cavity. And the monitoring precision is effectively improved.

The invention discloses a building inclination warning component for building detection, and belongs to the technical field of engineering detection, the building inclination warning component comprises an inclination angle sensor main body, a plurality of pre-grooves are formed in an outer shell of the inclination angle sensor main body, a thermosensitive execution unit is arranged in each pre-groove, and a first reflective layer is arranged on the surface of the outer shell of the inclination angle sensor main body. Sunlight can be efficiently reflected through the first reflective layer and the second reflective layer in the thermosensitive execution unit, and the thermosensitive execution unit which is arranged on the tilt angle sensor main body and also has a sunlight reflecting function can sense the temperature in the tilt angle sensor main body in real time. When the internal temperature of the tilt angle sensor main body exceeds a first preset critical upper limit, the thermosensitive medium part is triggered to be heated and expanded, and the annular cover plate which originally covers the end part of the housing structure is pushed to move; therefore, the heat gathered in the tilt angle sensor main body can be timely and rapidly dissipated to the atmospheric environment through the housing structure in the thermosensitive execution unit, and the heat dissipation efficiency is enhanced.

The invention belongs to the technical field of low-melting-point alloys, and provides a low-melting-point gallium-based liquid alloy and a preparation method and application thereof. The preparation raw materials of the gallium-based liquid alloy comprise gallium, indium, tin, zinc, bismuth, antimony, lead and rare earth metal with specific mass content. The rare earth metal comprises one or two of lanthanum, cerium and neodymium. A trace amount of one or two of lanthanum, cerium and neodymium is added into the gallium-based alloy, so that the purity of the alloy can be improved, the viscosity can be reduced, and the surface tension can be adjusted; by adjusting the formula of the alloy, the smelting time is shortened in the alloy smelting process stage, the efficiency is improved, the alloy cost is reduced, the alloy is more uniform macroscopically, the low-temperature stability of the alloy is further improved, and the alloy can be kept in a stable liquid state at the low temperature even 10 DEG C below zero and better meet the special climate requirements.

The utility model provides a vibration-resistant bimetal thermometer, which belongs to the technical field of thermometers, and comprises a dial plate assembly provided with a mounting cavity; the pointer assembly is arranged in the mounting cavity; the temperature measuring assembly comprises a supporting pipe, a temperature measuring assembly and a temperature measuring assembly, and the supporting pipe is provided with a mounting channel; the temperature measuring element is arranged in the mounting channel and is provided with a fixed end and a free end; the mandrel is rotationally arranged in the mounting channel, one end of the mandrel is connected with the free end, and the other end of the mandrel is connected with the pointer assembly; and silicone oil is arranged in the mounting cavity and / or the mounting channel. According to the utility model, the silicone oil is filled, so that the influence of external vibration on the measurement precision and the reading precision of the bimetallic thermometer during temperature measurement is reduced. Especially, through double-position filling of silicone oil, the anti-seismic performance and the precision of the bimetal thermometer are greatly improved.

The invention relates to the technical field of automobile wire harness testing, in particular to a new energy automobile wire harness testing device which comprises two fixed connector lugs symmetrically connected to the top end of a box body in a sliding mode, and an automobile wire harness temperature detection mechanism is arranged in the middle of the top end of the box body. The automobile wire harness temperature detection mechanism comprises a fixing frame horizontally and slidably connected to the middle of the top end of the box body, at least two shape memory alloys are relatively and slidably connected to an inner cavity of the fixing frame, and an arc-shaped heat transfer plate abutting against an automobile wire harness is fixedly installed on the side, close to the circle center of the fixing frame, of each shape memory alloy. A marking assembly is further arranged in an inner cavity of the fixing frame. According to the invention, the surface temperature of the automobile wire harness is detected before the automobile wire harness is tested, so that the equipment can accurately determine the fault position of the automobile wire harness, the whole circumferential surface of the automobile wire harness does not need to be comprehensively tested during subsequent testing, the labor burden of workers is reduced, and the device is convenient to use.

The present invention relates to the technical field of watertight doors, specifically a marine stable watertight hydraulic door, which includes a door panel and a door frame hinged to one end of the door panel. A square tube frame is fixed on one side of the door panel. After the door is closed, the square tube frame and the door frame are in sealing contact, and a plurality of bolt fixtures are connected between the door frame and the square tube frame. The bolt fixtures are arranged on the square tube frame and elastically snap into the grooves opened on the door frame. A bolt rack is in contact with the side of the door frame facing away from the square tube frame. The watertight door of the present invention has a normal mode, a watertight mode, and a fireproof mode. In the fireproof mode, the watertight door cannot be easily opened, and the crew cannot push the handle L bar without knowing the fire situation. In this way, the crew can know that there is a fire on the other side of the door and avoid the safety problem of the fire spreading outward after opening the door.

The present disclosure relates to a system (100) for acoustic detection of a physical event, the system (100) comprising: at least one conversion element (10) for converting a physical event into a characteristic sound; an acoustic sensor (40) configured to be mechanically connected to the structure (50) at a distance from the at least one conversion element (10); and a processor (42, 62) coupled to the acoustic sensor (40) wherein the at least one conversion element (10) is configured to react to the physical event by generating a characteristic sound and to introduce the characteristic sound into the structure (50), the acoustic sensor (40) is configured to record the characteristic sound generated by the at least one conversion element (10) as a structure propagation sound propagating through the structure (50), and wherein the processor (42, 62) is configured to detect the physical event based on the characteristic sound recorded by the acoustic sensor (40).

A thermometer configured to detect a range of temperatures of a cooking surface includes a gauge including a first indicia and a second indicia, a thermometal operably connected to the gauge, and a stationary member defining a first aperture, the gauge configured to rotate relative to the stationary member. In response to the thermometal detecting a first range of temperatures, the gauge is configured to rotate relative to the stationary member to display the first indicia through the first aperture. In response to the thermometal detecting a second range of temperatures, the gauge is configured to rotate relative to the stationary member to display the second indicia through the first aperture.

The utility model discloses an electrical equipment temperature measurement alarm device, which comprises a display screen and a sensor, the bottom of the display screen is provided with a connecting assembly, the connecting assembly comprises a support rod and a rotating rod, the support rod is provided with a fixing assembly, the fixing assembly comprises a support plate and a sealing sleeve, the support rod is provided with a temperature control assembly, and the temperature control assembly is provided with a temperature sensor. The temperature control assembly comprises a clamping sleeve and a sleeve, the inner side of the sleeve is provided with a movable assembly, the movable assembly comprises a piston and a button, the electrical equipment temperature measurement alarm device can turn on the electric bell through the sensor and the button at the same time to carry out alarm work, even if a certain alarm mechanism breaks down, the alarm work can be carried out smoothly, and the alarm efficiency is improved. The display screen is fixed by rotating the display screen on the supporting rod through the rotating rod and loosening the bayonet lock, so that the display screen is convenient for personnel to check and work, and the display screen can be conveniently mounted at different positions of the electrical equipment and is suitable for temperature measurement and alarm of the electrical equipment.

The utility model discloses a kind of dry reed tube temperature sensing devices, including containing mechanism, sealing mechanism and magnetic control mechanism, the containing mechanism includes jar body, the jar cover of buckling in the jar body front side, sealing mechanism, the sealing mechanism includes two sealing rings slidingly connected between the jar body and jar cover. In the utility model, jar cover closes jar body front side, and the sealing ring of pipe body fixation is realized joint sealing;Subsequently, left side control valve is opened, and cavity is completed vacuumizing and inert gas (such as nitrogen) injection through corresponding pipe body, after closing the valve, right side control valve is opened, and high-temperature resistant silica gel or epoxy resin is injected through the pipe body. After solidification, resin occupies jar body main body space, residual inert gas is evenly dispersed in resin matrix with micrometer level bubble, forms inert gas-resin complementary protection system, constructs moisture-proof, oxidation-resistant, impact-resistant and temperature-stable working environment for dry reed tube, significantly prolongs its service life.

The hydraulic pump station with the self-monitoring unit is applied to the field of hydraulic pumps and comprises a hydraulic pump station body, a temperature sensor is fixedly connected to the inner wall of an oil tank of the hydraulic pump station body, an irradiation lamp is fixedly connected to the inner wall, right facing the temperature sensor, of the oil tank, and the temperature sensor comprises a back plate. According to the hydraulic pump station, the temperature sensor is additionally arranged on the basis of an existing hydraulic pump station to monitor the temperature of hydraulic oil in real time, the length of a light area is measured through the light blocking effect of the mercury column, so that a regulation and control signal is obtained, and the refrigeration effect of the semiconductor refrigeration piece is regulated according to the regulation and control signal; and the size of the heat exchange area is adjusted by adjusting and controlling the telescopic length of the telescopic heat exchange cylinder, so that the cooling effect at the high temperature is effectively improved, the icing problem in the low-temperature weather can be effectively avoided, and the problem that existing heat dissipation is prone to being affected by the external environment is effectively solved.

The invention relates to the technical field of temperature protector detection, in particular to a temperature protector critical flip acoustic feature detection method and system, and the method comprises the steps: obtaining an original sound signal of a bimetallic strip temperature protector; performing dynamic closed-loop suppression on the original sound signal to generate a sound signal after noise reduction; carrying out acoustic feature recognition on the sound signal, and generating an acoustic feature set representing bimetallic behavior characteristics; generating an acoustic parameter compensation variable according to the transmission process behavior of the sound wave in the high-temperature gas; processing the acoustic feature set and the acoustic parameter compensation variable based on a behavior recognition analysis process, and outputting an action feature sequence of the bimetallic strip temperature protector; and when the action characteristic sequence displays a continuous action characteristic state, confirming that the bimetallic strip temperature protector has completed critical overturning. According to the invention, the problems of critical upset misjudgment and incapability of analyzing the pre-upset energy storage process caused by thermal noise interference in a traditional electric heating detection method are effectively solved.

The invention relates to the technical field of industrial processing, in particular to temperature monitoring equipment for ion nitriding treatment. Comprising an outer frame, a first vertical column, a second vertical column, a third vertical column, a cross beam and a fan-shaped ruler, the outer frame comprises four rigid rectangular materials which are connected end to end, and one end point of each vertical column is perpendicularly and fixedly connected with the inner surface of the top of the outer frame; the second vertical column and the transverse column comprise a first transverse column, a second transverse column and a rotary connecting rod, the first transverse column is parallel to the second transverse column, the two ends of the rotary connecting rod are fixedly connected with the first transverse column and the second transverse column respectively, one end of the vertical column is vertically and fixedly connected with the inner surface of the top of the outer frame, and the other end of the vertical column is fixedly connected with the inner surface of the top of the outer frame. One end of the second vertical column is perpendicularly and fixedly connected with the inner surface of the bottom of the outer frame, the other end of the second vertical column is hinged to one side wall of the transverse column, the end, away from the rotary connecting rod, of the second transverse column is rotationally connected with the central angle of the fan-shaped ruler, and one end of the third vertical column is perpendicularly and fixedly connected with the inner surface of the bottom of the outer frame.

The invention discloses a wireless temperature sensor with a paper folding structure. The temperature sensor comprises a substrate, a planar inductor, a V-shaped beam, a substrate capacitor polar plate, a capacitor upper polar plate, a spring beam, the paper folding structure and a metal wire. When the temperature rises, thermal expansion of the V-shaped beam is caused, and then the capacitor upper polar plate is driven to move towards the two ends, so that the overlapping area between the capacitor upper polar plate and the substrate capacitor polar plate is increased, the capacitance value of the sensitive capacitor is increased, the resonant frequency of an LC resonant circuit formed by the sensitive capacitor and the planar inductor is reduced, and high-temperature measurement is realized. When the temperature is reduced, the V-shaped beam is contracted, the upper electrode plate of the driving capacitor moves towards the center, the paper folding structure protrudes upwards, the capacitance value of the sensitive capacitor is decreased, the resonant frequency of an LC resonant circuit composed of the sensitive capacitor and the planar inductor is increased, and low-temperature measurement is achieved. The temperature sensor has the advantages of simple structure, sensitive response, wide measuring range, process compatibility and the like.

The utility model provides a charging gun overheating detection device and a charging gun. The charging gun overheating detection device comprises a conductive member; the metal piece abuts against the plug pin of the charging gun, the metal piece and the conductive piece are arranged in a spaced mode, and the metal piece is configured to make contact with the conductive piece when the temperature of the plug pin of the charging gun is larger than a preset temperature threshold value; and the electric signal detection module is electrically connected with the conductive piece and used for detecting an electric signal on the conductive piece. The overheat detection device for the charging gun can detect whether the bolt of the charging gun is in an overheat state, and has the advantages of high reliability, strong anti-interference capability and the like.

The invention relates to a shielding type bimetal thermometer which comprises a shell, a heat conduction mechanism, a bimetal mechanism and a metering mechanism. The shell mechanism is composed of a front shell with a heat insulation cavity and a rear shell with a heat conduction cavity. The heat conduction mechanism transmits heat to the heat conduction cavity through a heat conduction plate and a heat conduction pipe at the front end of the front shell. The tail end of the expansion sleeve is in interference fit with the heat conduction sleeve, the front end of the expansion sleeve slides, and a floating gap is formed between the expansion sleeve and the heat conduction sleeve. A first floating valve plate and a second floating valve plate of the metering part are respectively connected with the front end of the expansion sleeve and the tail end of the heat conduction sleeve, a resistance strain gauge is arranged between the valve plates, and wires are connected to a bridge; the tail end of the heat conduction rod is fixed to the second floating valve plate, and the front end of the heat conduction pipe is connected with the valve plate in a sliding mode. The thermometer accurately senses the temperature through the resistance strain gauges by using the bimetal expansion difference.

A powder bed fusion additive manufacturing (AM) machine includes a build plate (12) configured to function as a platform to support one or more parts (16) built using the powder bed fusion AM machine. The build plate (12) further includes a thermal history indicator (40, 50, 64) positioned on the build plate (12), attached to the build plate (12), or physically integrated with the build plate (12) such that the thermal history indicator (40, 50, 64) experiences the same temperature as the build plate (12). The thermal history indicator (40, 50, 64) is configured to display a durable visual indication of achievement of a temperature associated with a post-processing step performed after the one or more parts (16) are built on the build platform.

The invention discloses a method for correcting a temperature effect of a static level gauge system, relates to the technical field of correction and calibration of the static level gauge system, and considers shrinkage and expansion in the length direction and the radial direction of a communicating pipe between static level gauges, shrinkage and expansion of communicating liquid and shrinkage and expansion of a bowl body of the static level gauge. The method can reduce the influence of the temperature effect on the hydrostatic level data, and has reference significance for improving the temperature adaptability and precision of the hydrostatic level monitoring method.

The invention relates to the technical field of energy storage devices, and particularly discloses a modular liquid cooling energy storage device which comprises an energy storage cabinet assembly, a first cabinet door is installed on one side of the front face of the energy storage cabinet assembly, a second cabinet door is installed on the other side of the front face of the energy storage cabinet assembly, and a third cabinet door is installed on one side of the back face of the energy storage cabinet assembly. A liquid pumping assembly is installed on the other side of the back face of the energy storage cabinet assembly, a liquid storage box assembly is installed on the inner side of the energy storage cabinet assembly, a liquid pumping matching assembly is installed on one side of the liquid storage box assembly, and a circulating heat absorption assembly is installed on the top of the liquid storage box assembly. After the temperature of the liquid in the liquid storage tank assembly is reduced, the temperature of the liquid on the inner side of the liquid expansion cylinder is reduced, the volume of the liquid in the liquid expansion cylinder is shrunk to the original volume, the arc-shaped telescopic column is shrunk to the original position, cooling can be automatically started after the temperature in the equipment is increased, and the equipment is convenient to manage.

The invention discloses a system for remotely measuring a change of a physical quantity which comprises an analogue measuring device and a digital distance reading device, characterised in that it comprises an analogue measuring device requiring no power supply, which has a housing in which there is an opening for a light beam, a mirror onto which the light beam falls, which mirror is connected to a material sensitive to the physical quantity being measured, a light focusing element and a coloured reflective standard, whereby the analogue measuring device uses a change of a physical quantity in the material sensitive to the measured quantity to change the angle of position of the mirror, which reflects the light beam from the light focusing element and directs it to the colour reflective standard, mechanically converting the measurement result into a specific colour from the standard, which then reflects the beam of a specific colour outside the housing, allowing the colour to be read, and a digital device reading the colour from a distance and assigning a specific change of a physical quantity value to this specific colour.

Smart materials that can self-activate based on the material interface, generating a mismatch in the thermal and mechanical characteristics in response to variable environmental energy levels, allow for the development of intelligent and sustainable devices and systems. However, due to symmetric strain coupled with intrinsic isotropic heat transport at the material interface, their capacity to self-activate is fundamentally constrained, resulting in a restricted physical and sensory range as well as low mechanical durability. Unlike current 3-D materials frequently used in self-activation, 2-D materials offer a new way for in-plane thermal expansion without suffering from interfacial slip or structural deformation. This disclosure reports an anisotropic van der Waals thermal transfer and asymmetric expansion at a material interface enabling significantly enhanced self-actuation by interfacial a molybdenum disulfide (MoS2) layer (IML) within a metal-elastic structure.

The utility model discloses a cover bead capable of measuring temperature stably, which comprises a shell, a temperature measuring device is arranged on the inner side of the shell, the temperature measuring device comprises a dial plate and a hollow sleeve column welded at the bottom of the dial plate, a temperature sensing element is arranged in the hollow sleeve column, a pointer connected with the temperature sensing element is arranged on the surface of the dial plate, and the dial plate and the hollow sleeve column are connected with each other. The surface of the dial plate is provided with a 100 DEG C marked value, the side of the 100 DEG C marked value is provided with a limiting column for the pointer to abut against, the top of the dial plate is covered with a dial plate cover abutting against the transparent glass, the inner side of the upper portion of the shell is provided with a positioning protruding point, and the outer side of the dial plate cover is provided with a positioning groove corresponding to the positioning protruding point. The temperature sensor is simple in structure and convenient to assemble and use, when the temperature of water vapor is above 100 DEG C, the limiting column limits rotation of the pointer, the movement range of the pointer is limited, overlarge deformation of the temperature sensing device is avoided, the measuring precision is improved, the service life is prolonged, and the temperature sensor is stable and durable.