314results about How to "Keep the temperature constant" patented technology

The invention provides a boiler waste heat system. A boiler comprises a blowdown valve and a blowdown waste-heat heat exchanger cold source valve. The cold source valve is correspondingly changed according to change of the blowdown valve. By the adoption of the system, it can be guaranteed that the cold source temperature output by a waste-heat heat exchanger is kept constant.

A fluid heat exchange device, comprising a header and a plurality of interconnecting circuits between an supply port and a return port, the interconnecting circuits being connected to the header by a corresponding plurality of connection ports at different locations along the header wherein the header includes a blocking control element inside the header, the blocking control element being positionally adjustable along the header to selectively block fluid flow from the supply port through the connection ports of the plurality of interconnecting circuits, thereby selectively controlling those interconnecting circuits of the plurality of interconnecting circuits which are subjected to fluid flow therethrough in dependency on the position of the blocking control element.

The invention discloses an alternating current (AC) impedance spectroscopy automatic testing device of positive temperature coefficient (PTC) thermistor. The device comprises an electric heating oven for holding a sample, a temperature control and protection circuit for maintaining the electric heating oven at a constant temperature and preventing overcurrent, an impedance measuring circuit for measuring the sample impedance, and a master control machine connected with two circuits via a CAN bus respectively and used for receiving a user instruction and controlling the two circuits to accomplish measurement. The impedance measuring circuit in the invention is based on high-speed synchronous data acquisition and digital signal processing technology, satisfies the measurement requirements for high precision, wide measurement range and wide frequency band, and has features of small volume, low cost and convenient operation. Data communication among the temperature control and protection circuit, the impedance measuring circuit and the master control machine is realized via CAN buses, to achieve good real-time property and high reliability. The invention can ensure constant-temperature testing environment, carries out multi-frequency point scanning measurement to the AC impedance of the tested sample, and realizes full automatic testing of impedance-temperature characteristics of the PTC thermistor under different frequencies.

The invention provides an engine inter-cooling device and a control method thereof. The inter-cooling device comprises an intercooler, a heat exchanger, a circulating water pump and a controller; a refrigerating fluid outlet pipe of the heat exchanger is provided with an electric proportional valve; an intercooler cooling fluid circulation loop is composed of the intercooler, the heat exchanger and the circulating water pump; the inter-cooling device also comprises a temperature sensor and a pressure sensor; an air outlet pipe of the intercooler is provided with a second electric proportional valve; the temperature sensor and the pressure sensor are both connected to the controller; the electric proportional valve, the circulating water pump and the second electric proportional valve are all controlled by the controller. Through the engine inter-cooling device and the control method thereof provided by the invention, the precise control of the temperature after pressurization and pressure difference before and after inter-cooling of the engine intercooler can be achieved; on the basis of ensuring a target value, the temperature of the cooling fluid of the inter-cooling device is more than a threshold value in the whole test cycle, and the temperature and flow are kept constant.

An intelligent constant-temperature hot-compressing patch consists of a pressure-sensitive adhesive fabric, a heating body, a phase change constant-temperature layer, a medicine composition layer and release paper, wherein the pressure-sensitive adhesive fabric, the heating body, the phase change constant-temperature layer, the medicine composition layer and the release paper are sequentially arranged from bottom to top, the heating body is located in the middle of the pressure-sensitive adhesive fabric, and the phase change constant-temperature layer is located on the surface of the heating body and is prepared from, by weight 40-60% of phase change agent, 8-25% of particle entrapment agent and 18-48% of flexible forming agent. The intelligent constant-temperature hot-compressing patch can achieve automatic constancy, enables the temperature approaching the skin temperature to be kept constant and provides higher safety guarantee by serving as a medical product attached to the skin for usage.

An apparatus for cyclically degradating the organic pollutants from aqueous solution by plasma is composed of a circulating cold water pool, reaction pool in said cold water pool and with water inlet and outlet tubes, the cathode and anode rods as plasma source in said reaction pool, and circulating pump.

The invention relates to a preparation method of a bismuth-layered compound superlattice. According to the method, normal chemical cleaning is carried out on a mica substrate; the mica substrate is introduced into a vacuum system for heating and degassing after being split in atmosphere; and a superlattice film comprising a bismuth compound thin layer and a barrier material sequentially grows on the clean mica substrate. A bismuth compound layer is slowly deposited on the mica surface as a lattice mismatching buffer layer; a barrier material layer grows at the same temperature and speed to further improve the surface quality; and the bismuth compound layer and a barrier alternately grow under the conditions of keeping the growth temperature unchanged and improving the growth speed until growth within set superlattice periods is ended. The preparation method ensures that each material layer in the product superlattice grows in an ideal two-dimensional layered mode; and the technical effects that bismuth-layered compound superlattice quickly grows on the mica substrate, the superlattice interface is kept flat and the superlattice film with an adjustable period is obtained are achieved.

The invention relates to a wallpaper printing system and belongs to the technical field of printing machines. The wallpaper printing system comprises a preheating mechanism, an embossing mechanism, a cooling mechanism, a tension mechanism, a winding mechanism and a machine frame. The preheating mechanism comprises a preheating cover and a heating roller, the preheating cover is arranged on a working surface of the heating roller, the embossing mechanism comprises a press roller and an embossing roller, and the press roller and the embossing roller are parallelly arranged and located on a discharging port of the preheating mechanism. Hot oil single-side inflow and outflow are adopted according to the preheating mechanism for the wallpaper printing system, the number of components in heat exchange with hot oil is reduced, and heat efficiency is improved; according to the preheating mechanism for the wallpaper printing system, an oil guide sleeve is adopted, the area of the hot oil in the heating roller is reduced, the circulation speed of the hot oil is accelerated, and the temperature of a roller can be kept constant to the largest extent.

The invention discloses an intelligent constant-temperature dehumidification device. The device comprises a machine body. A supporting plate is fixedly installed inside the machine body. A water collection box is fixedly installed at the bottom of the supporting plate. A constant-temperature chamber is fixedly connected with the bottom of the water collection chamber. An exhaust fan, a first dehumidification mechanism and a second dehumidification mechanism are arranged on the top of the supporting plate from right to left in sequence. The first dehumidification mechanism is composed of a dehumidification box, adsorption sponge, a dehumidification cover, an electric telescopic rod and a push plate. The second dehumidification mechanism is composed of a dehumidification barrel, a barrel cover, desiccant and an air outlet pipe. A drainage pipe communicates with the bottom end of the dehumidification box fixedly. According to the intelligent constant-temperature dehumidification device, air in a station is sucked into the dehumidification barrel through the exhaust fan, moisture in the air is adsorbed by the adsorption sponge preliminary, and then enters the dehumidification barrel after being adsorbed by the adsorption sponge, the air is fed into the desiccant so that more moisture can be adsorbed by the desiccant, then the moisture in the air is removed, and the influence causedby moisture to the equipment in the station is reduced.

The invention relates to the technical field of grease processing, particularly to an grease melting stirring system which comprises a liquid grease storage tank, a stirring device, a melting device and a liquid circulation pipe, wherein the melting device comprises a heating layer and a stock bin communicated with the storage tank; the heating layer is arranged on the stock bin; a gap from which melted grease can flow into the stock bin is formed in the heating layer; the melting device further comprises a heat preservation cover; the heat preservation cover is arranged on the stock bin and a heating cavity is formed between the heating layer and the heat preservation cover; one end of the liquid circulation pipe is connected with the storage tank; the other end of the liquid circulation pipe passes through the top of the heat preservation cover to enter the heating cavity; a control valve for controlling liquid to flow and a circulation pump for supplying power for liquid circulation are arranged on the liquid circulation pipe. The invention further provides a grease melting processing method. Compared with the prior art, the grease melting stirring system has the advantages of being simple in structure, convenient to use, high in melting efficiency and convenient to clean.

The invention discloses an assembly type heat preservation plate, and aims to solve the problem that the heat preservation performance of an existing heat preservation plate needs to be improved. Theassembly type heat preservation plate comprises a base plate, a supporting layer and a heat preservation layer. The base plate, the supporting layer, and the heat preservation layer are sequentially and fixedly connected into a whole from bottom to top. The preparation process of the supporting layer comprises the following steps: (1) a plurality of rectangular small frames are formed among reinforced steel bars by taking steel bars as keels and constructing a supporting framework on the base plate; (2) a sound absorption felt is filled in the rectangular small frames, and a supporting layer is formed. According to the invention, the ardealite is used as a raw material to prepare the base plate. Meanwhile, the supporting layer and the heat preservation layer are structurally improved, so that the prepared heat preservation plate has excellent performances such as light weight, high strength, water resistance, moisture resistance, stretching resistance and the like. On the basis of thestructural improvement of the heat preservation plate, the heat preservation plate disclosed by the invention is light in weight, high in strength, small in heat conduction coefficient, good in fireproof and waterproof effects and the like. Meanwhile, the ardealite is used as the raw material, so that the resource utilization of the ardealite is realized.

The invention discloses a constant temperature type double-station hot core box core shooting machine, and belongs to the technical field of core shooting machines. The constant temperature type double-station hot core box core shooting machine comprises a supporting frame and a sand storage box, wherein the sand storage box is installed at the top end of the supporting frame. The constant temperature type double-station hot core box core shooting machine further comprises a position transfer mechanism, lower core box assemblies, a core ejection mechanism, sand shooting mechanisms, an upper core box assembly, a connecting pipeline and a PLC control box. The position transfer mechanism is installed between the left side inner wall and the right side inner wall of the supporting frame. The two lower core box assemblies are arranged, and the core ejection mechanism is fixedly installed at the bottoms of the lower core box assemblies. The two sand shooting mechanisms are arranged and located above the lower core box assemblies. The upper core box assembly is fixedly installed at the bottom of the sand storage box, and the PLC control box is installed on one side wall of the supportingframe. The purpose that replacement of core boxes and the sand casting work can be accomplished under the condition that the whole working process does not need to be stopped is achieved, the production efficiency is improved, and utilization is more flexible; precoated sand in sand shooting assemblies is located in the environment with the constant temperature, and therefore the quality of a moldcore product is guaranteed, the manufacturing cost is low, and maintenance is convenient.

The invention discloses a high-strength low-density hcp+bcc dual-structure magnesium-lithium alloy bar. The high-strength low-density hcp+bcc dual-structure magnesium-lithium alloy bar comprises the following raw materials of, by weight, 6.1%-10.2% of Li, 4.6%-5.8% of Al, 1.5%-2.3% of Zn, 0.1%-0.6% of Y, and the balance Mg and impurity elements thereof. The impurity elements comprise Ca, Fe, Cu and Ni, the total amount is smaller than 0.2%, wherein Fe is smaller than or equal to 0.04%, and Ca is smaller than or equal to 0.03%. According to the high-strength low-density hcp+bcc dual-structure magnesium-lithium alloy bar, through reasonable matching of the types and proportional relation of the alloy elements, the trace Y element is added, and the trace Y element and the matrix Mg element form an Al2Y strengthening phase so as to improve the strength of alloy. Mg-Y intermediate alloy is added into melt, smelting is conducted, alloy cost is lowered, and industrialized production is facilitated. A semicontinuous casting process is conducted under the non-vacuum condition, on the one hand, complexity of experimental operation is lowered, on the other hand, the melt purity degree and thealloy yield are improved, and the foundation is laid for later high-strength ultralight magnesium-lithium alloy.

The invention discloses a miniature measurement and control system fit for a high-field asymmetric waveform transference tube. The system comprises a man-machine interaction module, an upper computer system and a measurement and control circuit module, wherein the measurement and control circuit module comprises a plurality of sub-circuit modules; an operator sends an operation command and observes a detection result through a friendly instrument operation interface provided by the upper computer system and the man-machine interaction module; the upper computer system is connected with the sub-circuit modules in the measurement and control circuit module; and the sub-circuit modules are connected with corresponding components in the high-field asymmetric waveform transference tube to generate measuring signals necessary for detecting substance ingredients of the high-field asymmetric waveform transference tube and detect a signal output by the high-field asymmetric waveform transference tube at high precision. The miniature measurement and control system provided by the invention is fit for high-field asymmetric waveform transference tubes with different sizes and manufactured by various techniques, and the system has the advantages of low noise, high integration degree, good reliability and anti-interference capability, and quick and simple operation, and the like.

The invention provides an air conditioner control method and an air conditioner controller and relates to the technical field of air conditioner energy saving control. The method is applied in a refrigeration unit and comprises the following steps that a refrigeration area is divided into the multiple refrigeration units; each refrigeration unit at least comprises a heating device and an air conditioner device; in each refrigeration unit, the heating power of the heating devices and the refrigeration power of the air conditioner devices are obtained; and in each refrigeration unit, the air conditioner working condition of the air conditioner devices are adjusted according to the heating power and the refrigeration power, so that the refrigeration power of the adjusted air conditioner devices is matched with the heating power. According to the air conditioner control method and the air conditioner controller, the technical problems that in the prior art, reaction on the heat value change of IT devices lags, each IT device in the constant temperature range cannot be guaranteed, the temperature distribution difference in the refrigeration area is large, and the refrigeration effect is poor can be solved.

The invention discloses a continuous pyrolyzing furnace, and relates to the technical field of pyrolyzing devices. The continuous pyrolyzing furnace comprises a hearth for pyrolyzing materials, a stirring spiral shaft arranged inside the hearth, a feeding mechanism connected with the hearth, a discharging mechanism connected with the hearth, and an exhaust opening wherein the feeding mechanism comprises a feeding shell and a feeding spiral shaft, the feeding spiral shaft and the feeding shell are matched and sealed, the discharging mechanism comprises a discharging shell and a discharging spiral shaft, the discharging shell and the discharging spiral shaft are matched and sealed, and the exhaust opening is used for exhausting pyrolysis gas generated during material pyrolysis. Continuous material pyrolysis is achieved, due to the fact that the feeding mechanism is filled with materials, and the discharging mechanism is filled with material residues, the sealing performance of the hearth can be ensured in the continuous feeding and discharging process, the temperature inside the hearth is kept constant, and pyrolysis gas generated by pyrolysis inside the hearth will not be lost from the feeding mechanism or the discharging mechanism.

The invention provides an outdoor lighting device. The outdoor lighting device includes: a light source driving circuit board, on which a light source driving circuit is arranged; a light source board, on which a light emitting diode light source electrically connected to the light source driving circuit is installed, and the light emitting diode light source A plurality of light-emitting diodes are included, and the plurality of light-emitting diodes include small light-incidence-angle light-emitting diodes. The outdoor lighting device has the advantages of simple structure, low micro-current power consumption, no heat generation, strong anti-interference ability to power supply, explosion-proof function, long life without maintenance, good versatility, low cost, long-term lighting does not affect eye health, etc., mainly The performance parameters meet the requirements of relevant national standards, and the produced light-emitting diodes with small beam angles can be used in the lighting system, which greatly reduces the production cost and does not need to discard the light-emitting diodes with small beam angles.

The invention provides a sterilizing method for low temperature steam sterilized traditional Chinese medicine, and relates to the technical field of traditional Chinese medicine sterilizing methods. The sterilizing method comprises the following steps: placing traditional Chinese medicine into a sterilizing room; vacuuming the sterilizing room; introducing high-temperature and high-pressure steam into the sterilizing room; when the pressure in the sterilizing room reaches a sterilizing pressure, preheating for stabilizing; continually introducing high-temperature and high-pressure steam, so that the temperature in the sterilizing room rises to a sterilizing temperature; starting sterilization; entering a drying process after finishing the sterilization; drying and standing for 24 hours to wait for the growth of spores; sterilizing once again; repeating the waiting and sterilizing processes after finishing the sterilization; finishing the sterilization. The sterilizing method is convenient to run, energy consumption is lowered greatly, and the original efficacy, characteristic and uniformity of the traditional Chinese medicine are kept; meanwhile, a plurality of bacteria such as molds and escherichia coli in traditional Chinese medicinal powder are killed fully, and a large amount of energy and material resource cost is saved; the sterilizing method is a novel and environment-friendly sterilizing method being worthy of wide popularization.

The invention relates to a system, method and device for data wireless transmitting and receiving. Data are obtained from the communication interface (s) of one or more instruments, the data are merged according to a certain order to form merged data which complies with the same agreement, and wireless transmitting is conducted to the merged data through a ZigBee wireless sensor network. The data are merged according to a certain order, converted as the same agreement and are transmitted, so that the problems that operation and information exchange among heterogeneous networks are difficult due to the different communication interfaces of the instruments and incompatibility of agreements of communication structures are solved. The system, method and device for data wireless transmitting and receiving provide a data wireless transmitting method and system which are strong in compatibility, and capable of collecting various types of data simultaneously and transmitting the data to a client in a non-interfering and wireless mode.

The invention provides a battery pack liquid cooling control method and device. The method comprises the steps carrying out analysis and comparison on a plurality of collected battery pack working temperature values to obtain the highest temperature value of the battery pack, calculating the temperature rise rate of the battery pack, and carrying out analysis and comparison on the temperature riserate of the battery pack to obtain the maximum temperature rise rate of the battery pack; setting a battery pack inlet water temperature target value according to the difference between the battery pack maximum temperature value and a battery pack target temperature value; sending a battery pack cooling request, the battery pack inlet water temperature target value and a water pump rotating speedpreset value to an air conditioning system when the highest temperature value of the battery pack is greater than a cooling starting threshold value; and controlling the partial components of the airconditioning system and a battery pack liquid cooling unit to be started by the air conditioning system according to the battery pack cooling request so as to start battery pack cooling. According tothe invention, the method can effectively control the temperature of a battery pack, ensures that the temperature of the battery pack is basically constant, and prolongs the service life of the battery pack; and the rotating speed of a water pump is adjusted according to the maximum temperature rise rate of the battery pack, so that energy consumption is reduced.

The invention relates to a device integrating temperature control and stirring. The volume of a tank body can be larger; an external heating device performs temperature regulation on liquid phase from the tank body; a stirring device is used for performing mechanical stirring on the liquid phase; an internal heating device is used for performing internal heating; gas is introduced to the inside of the tank body through a gas introducing space between a first rotating shaft and a second rotating shaft; the gas stirring is performed. By reasonably controlling the heating power of the external heating device and the internal heating device, the temperature of the liquid phase in the liquid phase reaction container maintains constant. The liquid phase reaction container is suitable for large-scale production, so that inside liquid phase substance ingredients and temperature are uniform.

The invention provides an oil-water separator for compressed air. The oil-water separator comprises an outer shell (1) and an inner shell (2), wherein the outer shell is arranged at the periphery of the inner shell; a guiding bar (3) which is of a spiral structure is arranged between the inner wall of the outer shell and the outer wall of the inner shell; a spiral gas guiding passage (30) is formed between the outer shell and the inner shell by the guiding bar which is of the spiral structure; the inner part of the inner shell is filled with filter filler (4) for filtering oil, water and impurities. According to the oil-water separator for the compressed air, provided by the invention, flow guiding is carried out on the compressed air by utilizing the spiral gas guiding passage arranged between the outer shell and the inner shell, the structure is simple, and the drying effect is good. In a heatless regeneration type compressed air dryer provided by the invention, the oil-water separator is arranged in a drying tower; the oil-water separation effect is good, the maintenance is convenient, and the cost is greatly reduced; the outer surface of a control valve is coated with a PTC (Positive Temperature Coefficient) heating plate by the heatless generation type compressed air dryer, so that the function of maintaining constant power is obtained, and the safety performance is good.

The invention relates to an X-ray zone plate manufacturing system. The X-ray zone plate manufacturing system comprises a chamber, a first precursor charging pipeline, a second precursor charging pipeline, a clamp, a muffle furnace, an air sucking pipeline and a vacuum pump, wherein the first precursor charging pipeline communicates with one end of the chamber and is used for conveying a first precursor into the chamber; the second precursor charging pipeline communicates with one end of the chamber and is used for conveying a second precursor into the chamber; the clamp is arranged inside thechamber and is used for fixing columnar thin-filament-shaped linings; the chamber is coated with the muffle furnace; the muffle furnace is used for heating the chamber; one end of the air sucking pipeline communicates with the other end of the chamber; and the vacuum pump is connected with the other end of the air sucking pipeline and is used for vacuumizing the chamber via the air sucking pipeline. The X-ray zone plate manufacturing system provided by the invention can realize simultaneous alternating growing of two types of zone plates on a plurality of columnar thin-filament-shaped liningsand improves the machining efficiency of the zone plates.