221results about "Thermometers using material expansion/contaction" patented technology

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 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).

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 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).

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 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 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.

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.

The present invention relates to the technical field of thermal runaway management for lithium-ion batteries, and more particularly to a method for detecting and locating overheating in lithium-ion batteries or battery packs using temperature sensors. The temperature sensor is based on a shape memory alloy or bimetallic strips. The lithium-ion batteries or battery packs are equipped with these temperature sensors and arranged in a matrix configuration, enabling detection and localization of overheated batteries within the pack. This method addresses the challenge of identifying overheating in large-scale battery packs and energy storage power stations, thereby improving the efficiency of detection and localization. It also facilitates timely identification and precise location of batteries that may be undergoing thermal runaway.

The invention discloses a device for testing the temperature of a piston in real time, and the device comprises at least one temperature sensor which is disposed at a temperature measurement point of the surface of the piston, the temperature measurement part of the temperature sensor is exposed out of the surface of the piston, and a K-type thermocouple is disposed in the temperature sensor; the temperature measurement module is mounted at the bottom of a pin seat of the piston and comprises a heat insulation plate, a chip, a high-temperature-resistant battery and a temperature control switch, and the heat insulation plate is in contact with the bottom of the pin seat; the chip is used for receiving the temperature data transmitted by the temperature sensor and converting the temperature data into a wireless temperature signal; the high-temperature-resistant battery supplies power to the chip; the temperature control switch is arranged between the high-temperature-resistant battery and the chip and used for sensing the temperature transmitted by the piston. The temperature sensor penetrates through an internal channel of the piston through a wire and is connected with the chip; the signal receiver is arranged outside the internal combustion engine and used for receiving the wireless temperature signal sent by the temperature measuring module; and the upper computer is connected with the signal receiver and is used for converting the wireless temperature signal into a temperature numerical value and displaying and recording the temperature numerical value.

The embodiment of the invention provides a detection method of a thermal overload protector, and relates to the technical field of thermal overload. The method comprises the following steps: sampling a thermal overload protector to-be-detected set to obtain a plurality of thermal overload protector samples, and obtaining test tripping time corresponding to each thermal overload protector sample; determining the tripping hot bending deflection corresponding to each thermal overload protector sample; according to a first hot bending deflection corresponding to a predetermined action range lower limit current, a second hot bending deflection corresponding to an action range upper limit current and tripping hot bending deflections corresponding to the plurality of thermal overload protector samples, determining a process capability index corresponding to the thermal overload protector samples; and determining the process capability of the thermal overload protector according to the process capability index corresponding to the thermal overload protector sample. The embodiment of the invention is used for providing a technical scheme which avoids the problem of high cost caused by full inspection and can realize effective quality control.

The present invention discloses a real-time high-temperature early warning system for power equipment based on tubular chiral thermodynamic metamaterials, comprising a tubular chiral thermodynamic metamaterial, a loading device, and a deformation monitoring system. The tubular chiral thermodynamic metamaterial is a chiral tube made of a thermoplastic polymer. The loading device is provided with two lightweight rigid clamps and four prestressed springs. The deformation monitoring system is provided with an extremely thin piezoelectric layer. The critical buckling force of the tubular chiral thermodynamic metamaterial with specific material and structural parameters decreases with increasing temperature, and at a certain specific temperature, it is equal to the axial pressure provided to the tubular chiral thermodynamic metamaterial by the four prestressed springs. At this time, the tubular chiral thermodynamic metamaterial buckles. The buckling deformation information is obtained in real time by the deformation monitoring system, thereby realizing early warning of the specific temperature. The system of the present invention can realize real-time, accurate and effective early warning of any high temperature in any part (surface and interior) of the power equipment and within a large temperature range.

The invention discloses a phase change liquid cooling circulation heat dissipation device for a data center, and relates to the technical field of data center heat dissipation, the phase change liquid cooling circulation heat dissipation device comprises a box body and a controller, the box body is internally provided with a heat dissipation assembly, a circulation assembly and a plurality of sets of cabinets, the heat dissipation assembly is matched with the circulation assembly, the side face of the box body is provided with a heat dissipation window, and the heat dissipation window is matched with the circulation assembly. The circulation assembly is matched with the cabinet, the heat dissipation assembly is matched with the heat dissipation windows, a filter screen and an adjusting assembly are installed between the heat dissipation windows, the adjusting assembly can adjust the direction of inlet air, and the filter screen can filter dust, so that when the device is used, heat dissipation can be more accurately carried out on the single cabinet, and the heat dissipation efficiency is improved. And meanwhile, through water cooling circulation of the device, the water cooling temperature can be effectively kept, the liquid temperature is prevented from rising for a long time, when the box body is cooled through the heat dissipation assembly of the device, heat dissipation can be efficiently conducted on hot air in the box body in cooperation with the adjusting assembly, and therefore heat dissipation is conducted.

The utility model relates to the technical field of temperature metering, and discloses a portable temperature metering device, which comprises a mercury thermometer, a temperature measuring disc, a temperature sensor, a temperature sensor, a temperature sensor, a temperature sensor, a temperature sensor, a temperature sensor, a temperature sensor, a temperature sensor and a temperature sensor, and is characterized in that the mercury thermometer is internally provided with a slim tube, and mercury is arranged in the slim tube; the mercury thermometer is bent and deformed into a spiral line shape and is fixed on the top surface of the temperature measuring disc, and a measuring end is arranged on the outer side and is connected with the top surface of the temperature measuring disc; and the shell is sleeved and fixed above the temperature measuring disc, and the mercury thermometer is arranged in the shell. After the centrifugal structure is rotated, the temperature measuring disc and the shell are rotated through the centrifugal structure, and mercury in the mercury thermometer flows to the measuring end along the thin tube under the action of centrifugal force. Compared with the prior art, the utility model has the advantages that: compared with the shape of a strip, the disc-shaped pen container has a smaller storage length and is more convenient to carry.

A sensor arrangement has a structure extending along a length, an optical fibre carrier, and an optical fibre sensor carried by the optical fibre carrier. The optical fibre carrier is fixed to the structure proximal to each end of the structure and is formed of a first carrier portion and a second carrier portion that are movable relative to each other and is formed substantially of a material having a first coefficient of thermal expansion. The optical fibre sensor has a single measurement point and is fixed to the optical fibre carrier either side of the single measurement point; and the structure is formed of a material having a second coefficient of thermal expansion which is different to the first coefficient of thermal expansion

The present application relates to the technical field of power system safety protection and fire fighting, in particular to an underground pipe gallery cable joint overheating warning device, and an automatic fire extinguishing device and system thereof. The underground pipe gallery cable joint overheating warning device comprises a shell, a heat-sensitive driving mechanism and a warning module. The shell is used for passing the cable and the cable joint is located in the shell. The heat-sensitive driving mechanism senses the temperature change of the cable joint through an SMA spring to produce deformation to drive the slider to slide relative to the support rod. The warning module uses the SMA spring as the core temperature sensing driving element, uses the temperature-induced phase change characteristics to generate mechanical driving force, triggers the indicator to pop up to the ground for warning. Therefore, the present application performs overheating warning for the internal part of the cable joint, does not need to rely on external power supply, and can resist harsh environment, thereby solving the problems of monitoring blind area of the cable joint caused by difficulty in monitoring the core temperature of the cable joint, and external power supply of the electronic monitoring device.

A measurement system includes: a vibration-driven energy harvesting unit that generates electric power from sound, vibration, or displacement; a power supply controller that controls an amount of power consumption of a power supply based on the electric power generated by the vibration-driven energy harvesting unit; a detector that is driven by electric power supplied by the power supply controller and detects an environment state quantity; and a transmitter that is driven by electric power supplied by the power supply controller and transmits information regarding the environment state quantity detected by the detector.

The invention discloses a wide-range passive wireless temperature sensor with a push-pull structure. The temperature sensor comprises a substrate, a planar inductor, a V-shaped beam, the push-pull structure, an interdigital capacitor and a metal wire. When the temperature rises, thermal expansion of the V-shaped beam is caused, then the push-pull structure driving rod is driven to output displacement in the X-axis direction, the honeycomb type hexagonal structure is expanded, the bow-tie type hexagonal structure is contracted, the capacitance value of the second interdigital capacitor is increased, the resonant frequency of an LC resonant circuit composed of the interdigital capacitors and the planar inductor is decreased, and high-temperature measurement is achieved. When the temperature is reduced, the V-shaped beam is contracted, the bow-tie-shaped hexagonal structure is expanded, the honeycomb-shaped hexagonal structure is contracted, the capacitance value of the first interdigital capacitor is reduced, the resonant frequency 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 present application relates to the technical field of overload protection, and particularly relates to a motor winding embedded overload protector, which comprises a protector body embedded in a stator body and an embedding structure; the stator body comprises an insulation framework and winding assemblies arranged at intervals between the insulation framework; the inside of the protector body comprises a temperature-sensitive metal sheet; the embedding structure comprises a heat-conducting pressing sheet and an extended cover plate, the heat-conducting pressing sheet presses the protector body against one end of the winding assembly; the heat-conducting pressing sheet and the temperature-sensitive metal sheet correspond to each other in position and shape; one end of the extended cover plate is in contact with the winding assembly, the extended cover plate conducts the heat of the winding assembly to the temperature-sensitive metal sheet through the heat-conducting pressing sheet, the center of the temperature-sensitive metal sheet is provided with a center hole, and a plurality of inner division grooves are radially arranged on the outer peripheral edge of the center hole, the present application realizes stable installation and improves protection sensitivity.

The thermometer convenient to use at night comprises a mercurial thermometer body and a lighting shell, the lighting shell is of a hollow structure with an opening in the upper portion, a round hole is formed in the bottom of the lighting shell, a shaft rod is arranged in the round hole in a matched mode, a drive plate is fixedly connected to the bottom of the shaft rod, and a fan-shaped plate is fixedly connected to the top of the shaft rod. A reciprocating pushing part is arranged in the lighting shell, a straight sliding groove matched with the shaft rod for use is formed in the reciprocating pushing part, cylindrical pushing rods are fixedly arranged at the positions, located at the two ends of the straight sliding groove, of the upper surface of the reciprocating pushing part respectively, connecting rods are fixedly arranged at the two ends of the reciprocating pushing part respectively, and clamping parts are fixedly bonded to the top ends of the connecting rods; lED lamp strips are adhered to the inner vertical surfaces of the two sides of the lighting shell respectively, a protective cover is arranged on the lighting shell in a matched mode, a visible window is formed in the protective cover, and the lighting shell and the protective cover are fixedly connected through fastening bolts. The interior of the illumination shell is illuminated through the LED lamp strip, so that the purpose that scales of the mercurial thermometer can be checked at night without turning on the lamp is achieved.

The broadband light source includes a confocal sensor assembly configured to measure a surface of a rotatable drum covered with a plasma formation target material. The broadband light source includes a laser source configured to direct pulsed illumination at the rotatable drum to excite the plasma formation target material and emit broadband light as the drum is angularly rotated and axially translated. The broadband light source includes a controller configured to direct the confocal sensor assembly to transmit a confocal light signal to the rotatable drum, record a calibrated measurement of the distance from the confocal sensor assembly to the rotatable drum, direct a cryogenic cooling subsystem to cryogenically cool the rotatable drum, record one or more distance measurements from the sensor head to the rotatable drum, convert the distance measurements to temperature values, and determine whether a target process condition temperature has been achieved.

The utility model discloses a conductivity meter verification auxiliary device, which belongs to the technical field of instrument metering and comprises a support base, one end of the support base is provided with a notch, the lower surface of the support base is provided with a fixed clamping plate and a movable clamping plate, the fixed clamping plate is fixedly mounted on the lower surface of the support base, and the movable clamping plate is fixedly mounted on the lower surface of the support base. A sliding plate is fixedly installed on the upper surface of the movable clamping plate and located in the notch, and a plurality of fixing screws are fixedly installed on the inner wall of the notch. The supporting base is arranged to be used in cooperation with the fixed clamping plate and the movable clamping plate, and the supporting base can be clamped on the thermostatic bath through cooperation of the movable clamping plate and the fixed clamping plate; and a mercurial thermometer, a standard solution test tube and a conductivity meter temperature probe are respectively inserted into the mercurial thermometer socket, the standard solution test tube socket and the conductivity meter temperature probe socket on the mounting plate, so that a worker does not need to carry out handheld operation during verification, the operation convenience is improved, and smooth operation is ensured.

The present invention relates to a label structure for marking finished products. The label structure according to the invention comprises: a first graphic pattern having a first number of pixels and printed on a first part of the label structure; a second graphic pattern having a second number of pixels and printed on a second part of the label structure, the second graphic pattern forming an optical code readable by an optical decoding device; a shielding member (3) capable of hiding or making visible the first graphic pattern depending on the value taken by a physical quantity to which the label structure is exposed (for example, the ambient temperature). When the first shielding member makes the first graphic pattern visible, the first and second graphic patterns can be observed in combination. When the first graphic pattern is visible through the shielding member, the combination of the first and second graphic patterns forms an optical code readable by an optical decoding device.