34results about How to "Wide range of ambient temperature" patented technology

The invention aims to provide a water-based dispersoid solid lubricant material and the preparation method thereof; wherein, the water-based dispersoid solid lubrication material can be used as solid lubrication material, has good filming and adhesive properties, anticorrosion and wear resistance, and adopts polyamide imide and PTFE as main adhesive material; the water-based solid lubricant is environmental protection, anticorrosive and wear resistant, has low friction coefficient and good high and low temperature resistance, overcomes the problems that the organic solvent of solid lubrication material in prior art has greater toxicity, easy volatilization and is not wear resistant so that the water-based solid lubricant has good application prospect.

The invention provides a temperature control device and method applicable to an automobile head-up display device. The temperature control device comprises an upper plastic housing, a lower metal housing, a semiconductor cooler, a fan, cooling fins, a heat-conducting adhesive, temperature sensors and a control circuit, wherein the control circuit is located on a main circuit board, one side of the semiconductor cooler is bonded with a core display chip on the main circuit board through the heat-conducting adhesive, the other side of the semiconductor cooler is bonded with the lower metal housing through the heat-conducting adhesive, and the control circuit is connected with the temperature sensors, the fan and the semiconductor cooler respectively. The invention further provides a method utilizing the device to perform temperature control. The temperature control device has the advantages of being simple in structure, wide in temperature control range, high in response speed, low in overall cost and the like.

A high-temperature-resisting three-preventing pouring glue and its production are disclosed. The process is carried out by mixing epoxy resin and activated filler mixture of in proportion of 6-10:7 with anhydride curing agent and alcohol toughening improver in proportion of 13-17:3-5:0.5-1. It has no solvent and environmental pollution, less viscosity and linear expansion coefficient, wide temperature range, higher thermal deformation temperature and excellent infiltration to coil.

The invention provides an air conditioning unit provided with a flooded shell-tube heat exchanger. The air conditioning unit comprises a compressor, a first heat exchanger communicated with an outflow end of the compressor, the flooded shell-tube heat exchanger, a throttling element connected between the first heat exchanger and the flooded shell-tube heat exchanger, an air-liquid separator and a two-way heat exchanger, wherein a first end of the tube pass of the flooded shell-tube heat exchanger is connected with a first end of the first heat exchanger, and a second end of the tube pass of the flooded shell-tube heat exchanger is connected with an inflow end of the compressor; the air-liquid separator is at least connected between the second end of the tube pass of the flooded shell-tube heat exchanger and the inflow end of the compressor; the first end of the first heat exchanger and the second end of the tube pass of the flooded shell-tube heat exchanger are connected with a first heat exchange pipeline of the two-way heat exchanger, one end of a second heat exchange pipeline of the two-way heat exchanger is connected with an auxiliary road end of a communication liquid phase of the air-liquid separator, and the other end of the second heat exchange pipeline is communicated with a middle air supplementing port of the compressor. Cached refrigerant liquid in the air-liquid separator can be reduced, and liquid impact accidents caused by the fact that the compressor inhales a lot of refrigerant liquid are prevented.

The invention discloses a remote monitoring terminal for urban pipe network pressure. The remote monitoring terminal comprises a pressure transmitter, an AD (analog/digital) converter, a central processing unit, a GSM module and a GSM antenna. The central processing unit is provided with an RS232 interface. The pressure transmitter is connected with the input end of the AD converter. The output end of the AD converter is connected to the RS232 interface. The input end of the GSM module is connected with the central processing unit. The GSM antenna is connected with the output end of the GSM module. The remote monitoring terminal for urban pipe network pressure has the advantages that pipe network pressure signals output by the pressure transmitter can be wirelessly propagated by the GSM network and layout of large urban pipe network pressure monitoring terminals can be simplified.

The invention relates to the technical field of infrared sensors, in particular to an infrared SF6 sensor device relevant to an NDIR (Non-Dispersive Infrared Analyzer) using an infrared spectrum absorption principle and a method. The infrared SF6 sensor device comprises an optical cavity, an MEMS (Micro-Electromechanical System) light source, an infrared detector, a detector circuit board and a main circuit board, wherein the optical cavity comprises an inner light tube, a breathable film and a jacket shell; the sensor optical cavity is of a convective diffusion structure and a double-layer breathable film structure; a main circuit board circuit comprises a power supply management circuit and a sensor infrared light source driving circuit; the sensor infrared light source driving circuit adopts a constant-power driving way; the main circuit board is provided with an output interface UART, an RS-485 serial communication circuit and a 4-20mA transmitter circuit. The device adopts a convective diffusion design, so that the response time is short; the double-layer breathable film is designed with short response time, so that the moisture interference capability is enhanced; the constant-power driving circuit is adopted, and an instrument amplification form is adopted for detector signal amplification, so that the long-term stability of analogue signals of a module on hardware is enhanced; various output interfaces are provided, so that the compatibility is high.

The invention discloses a high-reliability communication optical cable. The optical cable comprises an inner sheath and a plurality of optical fiber units arranged in the inner sheath, wherein each optical fiber unit comprises a loose tube and a plurality of optical fibers arranged in the loose tube, and further comprises an armor layer, a shield layer and an outer sheath orderly arranged outside the inner sheath from inside to outside. According to the optical cable disclosed by the invention, a steel-tape armoring and braided shield structure is adopted, an aviation steel wire rope central reinforcement in a twisting structure and a water-blocking rope manufactured by wrapping aramid fiber yarns by a water-blocking tape are adopted for a reinforcing structure, and each jacket is made of a wearable elastomer material, so that the flexibility, water-tightness and compression resistance and tension resistance of the high-reliability communication optical cable are improved, and the environment temperature of use and laying is wide in range.

The invention relates to a preparation method of a low-temperature lithium ion battery. The lithium ion battery comprises a porous positive plate with high electron conductivity and high ion conductivity, the active material is a positive electrode material of secondary micron particles formed by primary nano particles; according to the porous negative plate with high electronic conductivity and high ionic conductivity, an active negative electrode material is a negative electrode material of secondary micron particles formed by primary nano particles, a ceramic diaphragm with high porosity and high wettability, and an electrolyte with low viscosity, low melting point and high low-temperature ionic conductivity. The lithium ion battery disclosed by the invention still maintains the discharge capacity of more than 80% under the condition of extremely low temperature (-45 DEG C), and has good low-temperature electrochemical performance, the low-temperature working temperature range of the lithium ion battery can be expanded, and the problems of electric vehicles and energy storage application of the lithium ion battery at the extremely low temperature are solved.

The invention discloses an antifreeze foaming agent and a preparation method thereof. The antifreeze foaming agent comprises the following components in percentage by mass: 33% of ethylene glycol, 2-4% of glycerin, 2-4% of DMF, 1.5-2.0% of triethanolamine, 0.08-0.12% of sodium carboxymethylcellulose, 0.1-0.2% of a linear tetramer of c-NMF, 0.1-0.2% of a metal organic framework material MOF-5, 24-27% of a PEO-PPO-PEO triblock copolymer, 5-7% of polyoxyethylene castor oil and the balance of deionized water. The antifreeze foaming agent reduces the icing possibility of a foaming agent during use.

The invention discloses a telemetering type rain gauge with the locating function. The telemetering type rain gauge comprises a rain gauge body, an AD converter and a central processing unit and further comprises a GSM module, a big dipper locating chip and a big dipper locating antenna, wherein the output end of the rain gauge body is connected with the input end of the AD converter, the output end of the AD converter is connected with the central processing unit, the GSM module is connected to the central processing unit, the big dipper locating antenna is connected to the input end of the big dipper locating chip, and the output end of the big dipper locating chip is connected with the central processing unit. The telemetering type rain gauge with the locating function can wirelessly send a rainfall value of a rainfall monitoring point to the receiving end through the GSM module, so that signal transmission cables needn't be distributed, and rainfall data recording staff can collect site data. By means of the big dipper locating chip, the telemetering type rain gauge can visually and synchronously send position signals of a monitoring point to the receiving end.

The invention provides a fiber bragg grating etalon based on closed cavity metal plate temperature control and a using method. The fiber bragg grating etalon comprises a sensitive element, a leading-out optical cable and an optical fiber adapter connected with the sensitive element in sequence, a first heat preservation device connected with thesensitive element, a second heat preservation devicearranged outside the first heat preservation device, and a case arranged outside the second heat preservation device. The using method of the fiber bragg grating etalon comprises the steps of initialtemperature judgment, adjustment, internal and external temperature difference judgment, continuous internal and external layer PID temperature control and the like. The invention provides a fiber bragg grating etalon based on closed cavity metal plate temperature control and a using method of the fiber bragg grating etalon in order to solve the problem that fiber bragg grating signal detection equipment is prone to interference of the external environment and accordingly instability is caused. Thefiber bragg grating etalon can realize accurate control on the center wavelength of thefiber bragg grating, has the advantages of high stability, small size, light weight, good test coverage, flexible configuration of the number of gratings and the like, and can meet the calibration, correction and test requirements of fiber bragg grating signal detection equipment.

The invention belongs to the technical field of air conditioner refrigeration, and particularly relates to a double-evaporation energy-saving air conditioner unit. The double-evaporation energy-savingair conditioner unit comprises an air conditioner unit shell, a fan I, a cooling water curtain and a surface cooler I, wherein the fan I, the cooling water curtain and the surface cooler I are arranged in the air conditioner unit shell, the air conditioner cooling water curtain and the fan I are arranged at an air inlet and an air outlet of the unit shell respectively, a water collecting disc anda water curtain water feeding system are arranged at the bottom of the unit shell, the water curtain water feeding system is used for conveying water in the water collecting disc to the upper part ofthe unit cooling water curtain, and spraying the water to the unit cooling water curtain, so that air passes through the water curtain to be cooled, and then passes through the surface cooler I to becooled. A water inlet of the surface cooler and a water outlet of the surface cooler are connected with a water cooling system through a freezing water conveying pipe and a freezing water return piperespectively. According to the double-evaporation energy-saving air conditioner unit, energy is saved, the efficiency is improved, the temperature range of refrigerating operation environment of theair conditioner equipment can be widened, the maximum limiting temperature is increased, and the air conditioner unit can still work normally in an energy-saving mode under the extreme weather, for example, the ambient temperature rises.

The invention discloses a high-efficiency comprehensive utilization system for agricultural straws, and belongs to the technical field of agricultural and sideline product recovery. The method comprises the following steps that straw-livestock, livestock-edible fungi, edible fungi-earthworm, earthworm-poultry and poultry-rice field are sequentially used, waste straws are subjected to feed treatment, manure discharged by the livestock is used as a fertilizer for edible fungi culture, the picked edible fungus root stacks are mixed with the livestock manure, earthworms are cultured, chickens are fed with the earthworms, and finally the chickens are raised in the rice field. A straw-livestock-edible mushroom-earthworm-poultry-rice field straw comprehensive utilization system is adopted, full utilization of agricultural waste straw is achieved, agricultural resources are saved, and the ecological agriculture development concept is met.