20results about How to "Raise the temperature difference" patented technology

The invention belongs to the technical field of coal bunker detection, and particularly relates to a device and method for detecting the water content in a mine coal bunker, the device comprises a constant-power heating body, a temperature measuring mechanism, an air temperature and humidity sensor and an electrical control box, the constant-power heating body is fixedly connected to the outer wall of a coal bunker body and used for heating the outer wall of the coal bunker body; the temperature measuring mechanism is used for detecting the temperature of a plurality of different height positions on the outer wall of the coal bunker body to obtain temperature measurement; the air temperature and humidity sensor is used for detecting the temperature and humidity of the periphery of the coal bunker body; the electric control box is used for determining a gradient threshold value according to the temperature measurement value, the temperature and the humidity to judge whether water exists in the coal bunker body or not. According to the method, whether the water content in different heights in the coal bunker body is excessive can be judged, operation guidance is provided for operators, the phenomenon of bunker collapse is reduced, the phenomenon of casualty accidents caused by the fact that accumulated coal in the coal bunker body bursts down is reduced, and the safety of the operators in coal mine coal bunker safety management is improved.

The invention provides a curved reflective glass forming process for a head-up display. The curved reflective glass forming process comprises the following steps: preparing flat original glass; correspondingly fixing an upper die and a lower die on the upper heating plate and the lower heating plate respectively, wherein the upper die and the lower die are in a separated state; setting the temperatures of an upper heating plate and a lower heating plate, and after the temperature of the lower mold reaches T1, putting plate glass into the lower mold; after the plate glass is put into the lower mold for a certain time, pushing the radiation heat source device into a gap between the upper mold and the lower mold; setting a radiation heat source opening formula according to the shape characteristics of the product, and heating the upper mold, the lower mold and the plate glass; when the temperature of the lower die reaches T2, the radiation heat source is closed and pushed out; the upper die falls until the upper die and the lower die are completely assembled, and the condition is kept for a period of time; in a mold closing state, gradually reducing the temperature of the heating plate, preserving heat and annealing; closing the heat source in a mold closing state, and reducing the mold temperature to a certain temperature; and opening the mold and taking materials. The product precision is high, operation is easy, efficiency is high, polishing treatment is not needed, and the production cost is greatly reduced.

The utility model discloses a steel belt cooling system of solid polyester resin for powder coating, which comprises two driving rollers which are arranged on two sides of a bearing heat dissipation support, the steel belt cooling system is provided with and connected with a rotary support to play a role in rotary sealing, and on the premise of ensuring that the driving rollers can rotate freely, the steel belt cooling system can be used for cooling the solid polyester resin for the powder coating. A spiral conveying support is installed, so that when the driving roller rotates, the spiral conveying support rotates synchronously, cooling water in the driving roller is conveyed, the cooling water can flow in the driving roller, and then the cooling water cools the driving roller; the temperature of the driving roller at the output end of the steel belt conveyor is prevented from rising, the temperature difference between the conveying cooling steel belt at the output end of the steel belt conveyor and the high-temperature polyester resin is always kept maximum, the cooling efficiency of the conveying cooling steel belt at the output end of the steel belt conveyor is further prevented from being reduced, and the using effect of the conveying cooling steel belt is guaranteed.

The invention discloses an energy-saving building and a building energy-saving method, and belongs to the technical field of energy conservation and environmental protection. The problem that according to an existing energy-saving building, when the indoor temperature is adjusted through rainwater, the indoor temperature cannot be adjusted according to the requirements of indoor personnel is solved. The system comprises a rainwater collection device, the rainwater collection device is connected with a rainwater storage device, the rainwater storage device comprises a first rainwater storage mechanism and a second rainwater storage mechanism, the first rainwater storage mechanism is arranged above the ground of the sunny side of a house, and the second rainwater storage mechanism is arranged below the ground of the sunny side of the house; the rainwater storage device is further connected with a liquid mixing box, a heat exchange mechanism is arranged on the wall of the house, the heat exchange mechanism is connected with the liquid mixing box through a liquid feeding pipe, and the liquid mixing box is connected with the first rainwater storage mechanism through a liquid discharging pipe. The rainwater temperature is adjusted through geothermal energy, the indoor temperature can be adjusted according to needs without external heating or refrigeration, and practicability is improved.

The invention discloses a production process and system of 2,4-dichlorobutyric acid, which comprises the following steps: S1: salt-forming reaction, adding 2,4-dichlorophenol into a salt-forming kettle, heating to 45 DEG C, and dripping 32% liquid alkali to prepare a 2,4-dichlorophenol sodium salt solution for standby use; S2: condensation reaction, putting the 2,4-dichlorophenol sodium salt solution formed in the previous step into a condensation kettle, heating to 80 DEG C-110 DEG C, dripping gamma-butyrolactone, refluxing and keeping the temperature at 80 DEG C-110 DEG C for reaction for 3h, cooling after the reaction is completed, crystallizing, filtering and separating 2,4-dichlorophenoxybutyric acid sodium salt crystals, and drying the obtained solid at 70 DEG C and normal pressure after pickling with hydrochloric acid to obtain 2,4-dichlorophenoxybutyric acid. The invention uses industrial phenol and chloroacetic acid as raw materials, adopts a new synthesis technology of condensation first and then chlorination, and the intermediate is directly chlorinated to prepare 2,4-D without separation, with a total yield of 76%, a content of 98% (effective acid), and a melting point of 136.5-140.5° C. There is no dichlorophenol pollution, the process is short, and the cost is low.

The invention discloses a forging and pressing composite die for producing a powder superalloy turbine disc and a production method, and relates to the technical field of machining dies. The die comprises an upper die sleeve, an upper die core, a lower die sleeve, a lower die core, a sizing block and a blank. The upper die core is movably sleeved with the upper die sleeve, the lower die core is movably sleeved with the lower die sleeve, an upper inserting groove is formed in the outer portion of the upper die core, upper plug iron is installed in the upper inserting groove, a lower inserting groove is formed in the outer portion of the lower die core, lower plug iron is installed in the lower inserting groove, and the upper die sleeve and the lower die sleeve are both made of 5CrNiMo steel. The temperature of the upper die sleeve and the temperature of the lower die sleeve are both 350 DEG C, the upper die core and the lower die core are both made of GH4169 steel, the temperature of the upper die core and the temperature of the lower die core are both 850 DEG C, the blank is made of GNPM01 steel, and the temperature of the blank is 1120 DEG C. The temperature difference between the upper die core and the blank and between the lower die core and the blank can be reduced through the upper die core and the lower die core at the temperature of 850 DEG C, so that the surface of a forged piece is prevented from being torn after forging, and the forging quality of the alloy turbine disc is guaranteed.

The invention relates to an energy storage power station safety control method based on energy storage unit state evaluation, and belongs to the technical field of energy storage power station safety control. The method comprises the steps that the temperature value of a single energy storage unit is collected, position information corresponding to the single energy storage unit is obtained, and therefore three-dimensional information of each energy storage unit is obtained; converting the three-dimensional information of each energy storage unit into a temperature distribution matrix; segmenting data in the temperature distribution matrix, and calculating a diffusion coefficient to obtain the diffusion coefficient; abnormal values are calculated and binarized, then accumulation is carried out, and an accumulated value matrix is constructed and windowing is carried out; using the sum of accumulated values in the windowing as a density statistical value; and then two-dimensional Gaussian fitting is adopted to judge temperature anomaly. Abnormal judgment is performed by using the stability of heat conduction abnormal diffusion value mutation, the abnormal state monitoring of the energy storage unit is completed, and the method is easy to popularize and apply.

The present invention provides a battery direct cooling system, method, vehicle battery management system and vehicle, the system includes: a direct cooling plate and a switching detection device, a flow channel and a liquid accumulation tank are arranged in the direct cooling plate; wherein, refrigerant flows in the flow channel, and two flow ports are arranged, namely a first flow port and a second flow port, one of the flow ports is selected as the inlet of the flow channel, and the other flow port is selected as the outlet of the flow channel; the liquid accumulation tank includes a first liquid accumulation tank and a second liquid accumulation tank, which are respectively arranged at the first flow port and the second flow port, and refrigerant is deposited, the liquid accumulation tank near the outlet is used to replenish the refrigerant in the flow channel, and the liquid accumulation tank near the inlet is used to receive the refrigerant flowing into the inlet, so that the refrigerant in the flow channel remains in a saturated state; if a trigger signal generated by the switching detection device is received, the outlet is switched to the inlet to allow the refrigerant to flow in the reverse direction. The present invention ensures the uniformity of heat exchange in the direct cooling system, avoids the phenomenon of drying out, and the reliability of heat exchange in the direct cooling system is high.

The utility model discloses a slide glass boat and a solar cell production device, the slide glass boat comprises a boat rack and a slide glass rack, the boat rack is provided with a placing position; the slide holder is located in the placement position and comprises a first baffle and a second baffle which are parallel and spaced and a connecting piece arranged between the first baffle and the second baffle, a space defined by the first baffle, the second baffle and the connecting piece is used for vertically placing a silicon wafer, and the first baffle and the second baffle are both parallel to the silicon wafer; the first baffle and the second baffle each comprise a plate body part and an interlayer part arranged in the plate body part, and the interlayer parts can absorb infrared light. The wafer carrying boat provided by the utility model can improve the heating uniformity of the silicon wafer in the diffusion process, thereby improving the quality and yield of the silicon wafer.

The invention discloses a stator assembly, a motor and an automobile, and the stator assembly comprises an iron core ring, the end part of the iron core ring is provided with a plurality of installation grooves in a penetrating manner, the installation grooves are arranged at intervals along the circumferential direction of the iron core ring, the iron core ring is provided with an oil injection core section located in the middle, an oil injection flow channel is formed in the oil injection core section, and the oil injection flow channel is communicated with the installation grooves; an oil injection port of the oil injection runner is formed in the side surface of the oil injection core section, and oil injected from the oil injection port enters the oil injection core section in the radial direction of the iron core ring and flows in the axial direction of the iron core ring after passing through the multiple mounting grooves; and the coil winding is at least partially arranged in the plurality of mounting grooves. After oil liquid is injected into the oil injection port, the oil liquid flows and flows out from the two ends of the mounting groove, the oil liquid makes contact with the coil winding, heat on the coil winding can be directly transmitted to the oil liquid, the oil liquid is injected into the mounting groove from the oil injection flow channel continuously, continuous heat dissipation of the coil winding is guaranteed, and the service life of the motor is guaranteed on the whole.

The invention discloses a small nuclear energy underwater unmanned equipment system capable of realizing efficient power generation based on energy storage, which comprises a nuclear reactor system, a heat storage unit and a supercritical carbon dioxide Brayton cycle power system, the temperature difference between the tanks is increased through a heat storage and recovery mechanism; nuclear energy released by the nuclear reactor system is transmitted to the supercritical carbon dioxide Brayton cycle power system through the heat storage unit, and energy conversion is completed through cooperative work of a heater, a steam turbine, a heat regenerator, a precooler and a gas compressor; through the nuclear-storage-circulation coupling design, the core requirements of light weight, long service life and intelligent control of underwater unmanned equipment can be met, and a power technical support is provided for ocean strong national construction.

The present invention relates to the field of battery cooling technology, and discloses a battery pack cooling device for a new energy power vehicle, comprising a battery pack housing, both ends of the battery pack housing are fixedly provided with mounting bars near the lower side, a battery partition frame is fixedly provided on the inner side of the battery pack housing, a plurality of battery blocks are installed on the inner side of the battery partition frame, a main cooling assembly is provided on the inner bottom and both ends of the battery pack housing, a plurality of auxiliary cooling assemblies are provided on the battery partition frame and the upper ends of the plurality of battery blocks, and the main cooling assembly includes a plurality of liquid cooling plates provided between the battery partition frame intervals at the inner bottom of the battery pack housing. The battery pack cooling device for a new energy power vehicle described in the present invention realizes the switching of the coolant inlet and outlet ends through the coordinated use of the whole, improves the temperature difference of the coolant inlet and outlet ends, and a plurality of heat sinks provided on the two groups of guide shells cool the coolant after absorbing heat.

The utility model belongs to the field of metal heat treatment, and particularly relates to a metal workpiece heat treatment device which comprises a supporting seat, the top of the supporting seat is fixedly connected with a connecting plate; a fixing groove is formed in the middle of the connecting plate; the top of the connecting plate is fixedly connected with a first motor; the output end of the first motor is fixedly connected with a threaded rod; the middle of the threaded rod is in threaded connection with a sliding block. A second motor is fixedly connected to the middle of the sliding block. The output end of the second motor is fixedly connected with a clamp. The top of the supporting seat is fixedly connected with a rotating seat; the middle part of the connecting plate is slidably connected with an adjusting mechanism; a heating mechanism is fixedly connected to the middle part of the adjusting mechanism; by arranging the baffle, splashed water flow can reach the surface of the baffle and is splashed back to the supercharger on the surface of the baffle, the contact area of the water flow and the supercharger is increased, the cooling effect of the device on the supercharger is enhanced, the large temperature difference of the surface of the supercharger is always kept, and the heat treatment effect of the device on the supercharger is ensured.

The application provides a semiconductor device and a preparation method thereof, which comprises a substrate, a bit line structure and a gate structure, the substrate comprises a core area and a peripheral area, a plurality of word lines are formed in the core area of the substrate; the bit line structure is located on the core area of the substrate, the bit line structure comprises a first semiconductor layer, a first metal layer and a first amorphous silicon layer which are stacked from bottom to top, and at least part of the first semiconductor layer is located in the substrate between two adjacent word lines; the gate structure is located on the peripheral area of the substrate, and the gate structure comprises a second semiconductor layer. The application can improve the temperature difference between the core area and the peripheral area, so as to improve the performance of the semiconductor device.

A stepped main heater for a single crystal furnace comprises a plurality of heating assemblies distributed in the circumferential direction of the single crystal furnace, gaps exist between the adjacent heating assemblies, a heating space is defined by all the heating assemblies, and each heating assembly comprises an upper heating plate and a lower heating plate which are distributed up and down. The upper heating plate and the lower heating plate are fixedly connected through at least one transition heating plate, all the transition heating plates surround to form a transition heating area, the space of the transition heating area is gradually reduced from top to bottom to form a stepped transition heating area, and the structure can be far away from a solid-liquid interface, so that the temperature gradient is more linear. Part of two adjacent lower heating plates are fixedly connected through a bottom heating plate, and the bottom heating plate extends towards the heating space. The temperature of the bottom of the molten silicon is improved, so that the temperature difference between the upper part and the lower part of the molten silicon can be improved, the temperature gradient in the whole molten silicon is remarkably improved, and the crystal defect caused by insufficient temperature gradient in the drawing process is reduced.

The invention belongs to the technical field of air source heat pumps, and particularly relates to a solar intelligent dual-power-supply high-cold-region variable-frequency air source heat pump unit which comprises a mains supply interface. The commercial power interface is connected with a rectifier; the photovoltaic power generation module is used for converting solar energy into direct current; the variable-frequency air source heat pump comprises a compressor, an evaporator, a condenser and an expansion valve; the data monitoring system monitors the solar power generation amount, the heat pump power consumption, the outdoor temperature and the indoor temperature in real time; and the power control system is used for managing the power input proportion of solar energy and mains supply to the heat pump. The operation mode of the heat pump system can be intelligently adjusted, zero mains supply input operation can be achieved when sunlight is sufficient, mains supply can be automatically and intelligently compensated when illuminance changes, normal operation of the heat pump system is guaranteed, and stability, reliability and energy saving performance of the heat pump system are guaranteed.

The invention discloses a super-hydrophobic film for enhancing and stabilizing thermoelectric conversion of a thermoelectric device, a preparation method and application. The preparation method comprises the following steps: firstly, preparing a polyurethane nanofiber film by adopting electrostatic spinning; then, the PU / PDMS / SiO2 composite film is soaked in PDMS / SiO2 composite dispersion liquid for ultrasonic treatment, and after drying, the PU / PDMS / SiO2 composite film is obtained; and finally, adhering the composite film to the cold end of a thermoelectric device to obtain a PU / PDMS / SiO2 film-thermoelectric device composite system. The contact angle between the composite film prepared by the method and water drops is greater than 150 degrees; the prepared film has high reflectivity, the temperature of the cold end of the thermoelectric device can be reduced, and the thermoelectric output performance of the thermoelectric device is enhanced; the thin film adhered to the thermoelectric device can prevent the thermoelectric device from being interfered even in outdoor environments such as environmental pollution and rain wash, and stable thermoelectric conversion is maintained; a new way is provided for efficient and stable thermoelectric conversion of a thermoelectric system, and the application field of thermoelectric devices is widened.

The utility model discloses an air conditioner cooling system, which relates to the technical field of refrigerating systems and comprises an evaporative cooling condenser, the evaporative cooling condenser comprises an evaporative cooling coil and an air-cooled condenser, the air-cooled condenser comprises an air-cooled cooling coil, and the air-cooled cooling coil is connected with the evaporative cooling coil in series; a water cooling system is arranged at the bottom of the evaporative cold condenser and is used for cooling hot water discharged by the evaporative cold condenser; the air-cooled cooling coil is connected to the evaporative cooling coil of the evaporative cooling condenser in series, so that a refrigerant can be more efficiently refrigerated, two different characteristics of evaporative cooling and air cooling are considered, and the reliability of the system is improved; meanwhile, hot water in the evaporation cooling condenser is cooled and recycled through the water cooling system, energy saving of water resources can be achieved, and cold air in the water cooling system can further achieve the cooling effect on the air cooling coil pipe; generally speaking, air cooling and water cooling are combined, so that more efficient and quicker refrigeration of the refrigerant is realized, and the refrigeration effect is good.

The present application relates to the technical field of high-temperature material processing, and in particular to a plasma generator and a plasma spheroidization device with controllable temperature distribution. The plasma generator provided in the present application comprises: a cathode module, including a water-cooled cathode; an anode module, including at least three anodes, and the three anodes are arranged around the cathode axis of the water-cooled cathode; an arc-starting module, having a powder feeding channel for generating a starting arc; wherein the powder feeding direction of the powder feeding channel intersects with the cathode axis to form a powder feeding convergence point, and the powder feeding convergence point is located between the cathode head of the water-cooled cathode and the plane where the anode axes of at least three anodes are located, and at the same time, the powder feeding convergence point is also located above the arc generated by the cathode head and the anode head of the anode. Through the above-mentioned arrangement, the present application simplifies the arc energy transfer process and improves energy utilization efficiency.