928results about How to "Little influence of temperature" patented technology

The invention relates to a preparation method of an emulsion deep profile/displacement control agent containing gel microspheres of a core shell structure. According to the method, materials are fed many times to carryout inverse emulsion low-temperature oxidation and reduction to initiate free radical polymerization so that water-solubility monomers (including acrylamide, ionic monomer I, the ionic monomer II and the third monomer) react with a cross-linking agent to generate the emulsion deep profile/displacement control agent containing gel microspheres of a core shell structure. The invention also relates to the emulsion deep profile/displacement control agent containing gel microspheres of a core shell structure, which is prepared by using the method. The profile/displacement control agent is a water-solubility microgel oil displacement material containing gel microspheres from nano scale to micron scale; with small initial grain size, the profile/displacement control agent can enter into the deep part of stratum; in addition, the profile/displacement control agent has high emulsion active component content and good flowability, can have volume expansion and mutual cementation under the actions of formation water and temperature according to the condition whether charges carried by the ionic monomers at a core layer and a shell layer are same or not; therefore the profile/displacement control requirements of different geological oil deposits of oil fields can be met.

The invention discloses an air and water hybrid cooling high-speed permanent-magnet motor and belongs to the technical field of motors. The large-power high-speed permanent-magnet motor comprises a casing, a cooling water jacket, a stator core, a stator radial air duct, a stator inner air duct, a motor rotor, an outer rotor axial fan, an outer rotor fan fixing frame and two sliding bearings. The stator core is divided into two sections, the radial air duct is reserved in the middle, and the inner air duct is reserved in a stator slot close to the air gap position. The cooling water jacket is arranged outside the stator casing, a spiral water way is arranged in the water jacket, and water flows into the water way from the middle of the water way and flows out from a left spiral water outlet and a right spiral water outlet which are arranged at two ends of the water way. The air and water hybrid cooling high-speed permanent-magnet motor can mechanically solve the problem that a permanent magnet is broken when bearing large pulling stress during high-speed rotating, further solves the problems that the large-power high-speed motor is large in loss density, difficult in heat dissipation and over high in temperature rising, and prevents the permanent magnet from having irreversible demagnetization easily at high temperature.

The invention relates to a magnetic control tunable optical fiber comb filter belonging to the technical fields of optical fiber sensing and optical fiber communication. The magnetic control tunable optical fiber comb filter comprises a broadband light source, an optical fiber coupler, an optical fiber environment, a magnetic field generating unit and a photoelectric detector, wherein the optical fiber environment comprises a left arm optical fiber, a right arm optical fiber and a PCFG (Photonic Crystal Fiber Grating). The magnetic control tunable optical fiber comb filter is characterized in that the PCFG cladding is provided with five large shaddock-form air holes of single-layer structures, and magnetofluid is filled into the large air holes through a capillary phenomenon and changes in the refraction index under the action of a variable magnetic field to change the effective refraction index of a PCFG cladding and cause the wavelength movement of a harmonic peak coupled between a PCFG base mode and a cladding mode so as to realize the tunability as the output characteristics of the filter. Because of different lengths of the left arm optical fiber and the right arm optical fiber in the optical fiber environment, two paths of light signals reflected by the PCFG have a light path difference and are subjected to interferences when returning to the optical fiber coupler so that a comb filter effect is generated in an output spectrum of the filter.

The invention discloses a method for treating phosphatic sewage by coupling modified biomass charcoal and artificial wetland, which comprises the following steps: growing aquatic plants on the soil layer of artificial wetland; collecting organisms in the harvesting season of the aquatic plants, and making the organisms into modified biomass charcoal; and adding the modified biomass charcoal into the artificial wetland, continuing growing the aquatic plants, and circulating like this. Compared with the prior art, the method solves the problems of high susceptibility to influence of climate temperature, aquatic plant treatment, phosphorus release of saturated-adsorption matrix, and the like, and especially has more obvious effect on phosphorus element treatment in the artificial wetland.

The present invention discloses an eddy current detecting sensor and a detecting method based three giant magneto-resistances. An excitation coil is adopted to generate an alternating magnetic field and arranged above a detected object. A giant magneto-resistance I, a giant magneto-resistance II and a giant magneto-resistance III with pair-wise orthogonal magnetic sensitivity directions between the excitation coil and the detected object. Wherein, the giant magneto-resistance I is connected with an amplifying circuit I. The giant magneto-resistance II is connected with an amplifying circuit II. The giant magneto-resistance III is connected with an amplifying circuit III. The amplifying circuit I, the amplifying circuit II and the amplifying circuit III output voltage signals corresponding to the giant magneto-resistance I, giant magneto-resistance II and giant magneto-resistance III. The voltage signal comprises eddy current distribution information of the detected object. The eddy current detecting sensor based on three giant magneto-resistances can not only bring high sensitivity and spatial resolution to deep or multilayer flaw detection but also benefit quantitative defect analysis.

The invention provides a micro-mechanical magnetic field sensor and a preparation method thereof and belongs to the field of micro-electro-mechanical systems. The method comprises the following steps of: manufacturing metal coils and a pad on a device structure layer; manufacturing a device structure by dry etching; and releasing the device structure to form a harmonic oscillator. The harmonic oscillator of the micro-mechanical magnetic field sensor provided by the invention operates in an extension mode, so induced electromotive force which is generated by each section of metal cutting magnetic induction line on each metal coil can be superposed, and the intensity of an output signal is improved. Moreover, the micro-mechanical magnetic field sensor has the advantages of low power consumption, simple driving/detection circuit, simple process, high industrial value and the like and is slightly influenced by temperature.

The invention discloses a method for measuring a wind driven generator air gap through eddy current sensors, and belongs to the field of measuring. At least four radial eddy current sensors are arranged on the surface of a generator stator, one axial eddy current sensor is arranged on the generator stator in the axial direction, and a key-phase sensor is arranged on the part, at the radial position of a rotating shaft of a generator, on a machine body or a rack; the signal output ends of the radial eddy current sensors, the signal output end of the axial eddy current sensor and the signal output end of the key-phase sensor are correspondingly connected with the signal input ends of a wind power state monitoring and collecting device respectively; the wind power state monitoring and collecting device reads and processes the sampling result and uploads the processed result to a database of a server through an Ethernet port, a workstation in a local area network or a remote workstation can have access to the database in the server, real-time air gap data of the wind driven generator are checked in real time, and different working modes or working patterns of the wind power state monitoring and collecting device can be controlled to be switched through air gap monitoring system software.

A high-cement-grout solidifying agent for the sludge or silt with 100-350% of water content is prepared from thioaluminate cement clinker, cube spar and calcium lime through proportionally mixing and grinding. Its advantages are quick solidifying and hardening, and high strength.

The invention provides a super-flat glazed brick. The super-flat glazed brick comprises a blank body and a glazed layer, wherein the glazed layer is attached to the upper surface of the blank body; the glazed layer comprises ground glaze and surface glaze; the surface glaze is located on the ground glaze; the thickness of the ground glaze is 0.1 to 0.8 mm; the thickness of the surface glaze is 0.5 to 1.0 mm; the ground glaze and the surface glaze are both prepared from specific ingredients. The super-flat glazed brick provided by the invention is high in Mohs hardness, large in breaking strength and low in water absorption.

The invention relates to an emulsion explosive which is formed by mixing a latex substrate and a sensitizing agent in a weight ratio of (95-97): (3-5) and sensitizing, wherein the latex substrate is formed by emulsifying 90-95 wt% of oil phase and 5-10 wt% of water phase; and the oil phase is prepared from 28-40 wt% of emulsifier and 60-72 wt% of oil phase material, wherein the emulsifier consists of 40-60 wt% of surfactant and 40-60 wt% of wetting and stabilizing agent, and the surfactant contains high hydroxyl S-80 which is prepared by a method comprising the following steps of: mixing oleic acid with sorbierite in an equivalent molar ratio, adding KOH the weight of which accounts for 0.1-0.15% of the total weight of reaction mixture, and effectively reacting for 3-7 hours at the temperature of 200-250 DEG C and the negative pressure of 0.05-0.1MPa. The emulsion explosive disclosed by the invention has a sensitization effect superior to emulsion explosive obtained by using the prior art. The invention further provides a preparation method of the emulsion explosive.

The invention relates to a special lubricant named as HP800 Special Lubricant which is used for the open gear and support roller that are oiled by injection method. The lubricant takes composite calcium sulphonate and composite aluminium as the thickener; the base oil of the lubricant is synthetic oil; and in addition tackifier, extreme pressure agent and antioxidant are also added in. Wherein the weight-portion of each component are: the base oil: 50-64, the thickener: 20, the tackifier :5-10, the extreme pressure agent: 10-25,and the antioxidant: 1. The invention is suitable for lubrication of the open gear, the support roller of all kinds of umbrella ball mill, mixer, rotary kiln, imported umbrella excavator, crusher, and coal grinding machine; and has very high extreme-pressure performance, excellent viscosity and protection performance, thereby the invention can substitute import products of the same kind and has the advantages of thick oil-film, non-oil-swinging and environmental-protection.

The invention discloses a lithium ion secondary battery. The lithium ion secondary battery comprises a positive pole piece, a negative pole piece, an isolating membrane and an electrolyte, wherein thepositive pole piece comprises a positive current collector and a positive active material layer which is arranged on the surface of the positive current collector and contains a positive active material, and the negative pole piece comprises a negative current collector and a negative active material layer which is arranged on the surface of the negative current collector and contains a negativeactive material; wherein the positive electrode active substance comprises lithium iron phosphate, and the negative electrode active substance comprises graphite; wherein the positive current collector and/or the negative current collector are/is a composite current collector, and the composite current collector comprises an organic support layer and a conductive layer arranged on at least one surface of the organic support layer. The lithium ion secondary battery provided by the invention has good low-temperature performance.

The invention relates to a server cabinet with a liquid cooling system. The server cabinet comprises a cabinet body, a liquid cooling distribution unit and a heat pipe heat-conducting unit, wherein the liquid cooling distribution unit comprises a liquid inlet pipe, a liquid outlet pipe, a liquid supply pipe and a liquid return pipe; the heat pipe heat-conducting unit comprises a liquid cooling module, a heat pipe and a heat-absorbing module; one end of the liquid supply pipe is connected with the liquid inlet pipe; the other end of the liquid supply pipe is connected with a liquid inlet of the liquid cooling module; one end of the liquid return pipe is connected with the liquid outlet pipe; the other end of the liquid return pipe is connected with a liquid outlet of the liquid cooling module; one end of the liquid return pipe is connected with the liquid outlet pipe; the other end of the liquid return pipe is connected with the liquid outlet of the liquid cooling module; one end of the heat pipe is connected with the liquid cooling module; the other end of the heat pipe is connected with the heat absorbing module; and the heat absorbing module is in contact with a server heat source of the cabinet body. Due to application of the heat pipe, a cooling liquid is prevented from entering a server; the risk that the server is damaged due to leakage of the cooling liquid is reduced; the server cabinet is simple in layout, and convenient to maintain and install; and the server can be flexibly added and reduced.

The invention provides a micromechanical magnetic field sensor and application thereof. The micromechanical magnetic field sensor at least comprises a resonant vibrator pair and insulating layers and metal coils, which are formed on the surface of the resonant vibrator pair in sequence. The micromechanical magnetic field sensor has the following beneficial effects: the micromechanical magnetic field sensor utilizes differential capacitor excitation and electromagnetic induction to measure the size of a magnetic field, wherein two resonant vibrator structures forming the resonant vibrator pair work in an inverse phase mode, the winding directions of the metal coils on the resonant vibrator structures are opposite, and the induced electromotive forces generated by the metal coils on the two resonant vibrator structures are connected with each other in parallel; as driving signals are differential signals, capacitive coupling signals in output signals are eliminated to obtain simple magnetic field output signals; meanwhile, the two resonant vibrator structures are coupled by a coupling structure so that the two resonant vibrator structures are connected and move as a whole; and furthermore, the micromechanical magnetic field sensor has simple structure, large output signals, high sensitivity and high detection accuracy, is slightly affected by temperature and is suitable for high working frequency.

The invention provides a thermo-mechanical coupling loading method for thermal strength tests, which can be used for achieving high temperature and large temperature rise rate and simulating unequally distributed loads. The technical scheme is as follows: the method comprises the following steps: arranging a quartz burner in front of a test piece loading area, wherein a gap is formed between the quartz burner and the test piece loading area, and a gap area is reserved in the arrangement area of the quartz burner; hinging a loading block at the front end of a mandril, wherein the loading block penetrates through the gap area of the arrangement area of the quartz burner and props against the surface of the test piece loading area; heating the test piece loading area via thermal radiation by using the quartz burner; and loading mechanical load on the test piece loading area by using the loading block.

The invention relates to a grading method of a lithium ion battery, and belongs to the technical field of secondary battery manufacturing. The grading method of the lithium ion battery comprises the following steps of performing constant-current discharging on the fully-charged lithium ion battery with a current of 0.3-1C until a first discharging cutoff voltage is reached, and placing the lithium ion battery; and performing constant-current discharging with a current of 0.05-0.2C until a second discharging cutoff voltage is reached, wherein the first discharging cutoff voltage is 2.0-2.7V, and the second discharging cutoff voltage and the first discharging cutoff voltage are same. The grading method has the advantages that rapid grading of the lithium ion battery can be achieved, the grading efficiency is high, environmental control energy consumption is low, the temperature influence can be reduced, the grading capacity is more accurate, the grouping consistency of the lithium ion battery is improved, and the grading method is a high-efficiency grading method suitable for mass production of the lithium ion battery.

The invention relates to a method for synthesizing polyimide precursor polymer resin and a method for manufacturing single-sided flexible copper-clad plates, which are applied to the technical field of microelectronics. An adhesive-free single-sided flexible copper-clad plate is obtained by the steps of: dissolving a monomer aromatic diamine in a non-proton polar solvent, stirring for dissolution, adding a silane coupling agent, stirring, adding an aromatic dianhydride monomer for polymerization to generate a polyimide precursor polymer resin solution, reacting and standing for defoaming; andcoating resin on a copper foil, pre-baking in an oven, removing the solvent, and heating in a gradient way in the high-temperature non-oxidation over (importing with nitrogen) so as to carry out complete imidization. The single-sided flexible copper-clad plate has the advantages that the heat resistance is good, the dimensional stability is strong, a substrate is thin, the peel strength is not less than 1.1kgf/cm, the polyimide resin is smooth and level after total etching, the elongation percentage is not less than 35%, the tensile strength is not less than 250MPa, the heat resistant temperature Tg of a polyimide insulation layer is not less than 328DEG C, and meanwhile, the plate has lower heat expansion coefficient, dielectric constant and water absorption rate.

The invention discloses a stem cell cryopreserving box and a cryopreservation method. The stem cell cryopreserving box comprises a box body, a box cover and baffle plates, wherein an opening is arranged at the top part of the box body, and pressure adjusting and fixing devices are arranged outside two opposite side walls on the box body; a plurality of collection bags and a plurality of baffle plates are arranged in the box body alternately, and the baffle plates are located at the topmost part of the alternate arrangement of the collection bags and the baffle plates; and the box cover is located at the top part of the box body and is connected with the pressure adjusting and fixing devices on the side walls of the box body by fasteners. Compared with the prior art, when the stem cell cryopreserving box and the cryopreservation method are used, stem cell samples of the same patient can be placed in one box body, and the box cover can press the collection bags into a flat shape, so that stem cells can be uniformly cooled; each box body, as an independent storage unit, is convenient to take and use; and when the box body is taken and used, the operation is simple, and the consumed time is shorter, so that the refrigerator door opening time is shortened, and the temperatures of other box bodies are slightly influenced.

The invention discloses a desulfurization wastewater zero-emission system using a coal-fired flue gas semidry method to remove fluorine and chlorine. The desulfurization wastewater zero-emission system comprises a high-concentration alkali liquor pipeline, a desulfurization wastewater pipeline, a diluted alkali liquor pipeline, an alkali liquor atomizing device, a compressed air pipeline, a process water pipeline and a flue. The flow of high-concentration alkali liquor is controlled according to unit load and the HCl concentration in flue gas, the high-concentration alkali liquor is mixed with desulfurization wastewater to obtain diluted alkali liquor, the diluted alkali liquor is sprayed into the flue between an air preheater and a dust remover through the alkali liquor atomizing device with multiple nozzles in grid arrangement, the diluted alkali liquor is sufficiently evenly mixed with the flue gas to solidify most of gas such as HCl, HF. SO3 and the like in the flue gas into fly ash, the emission quantity of the desulfurization wastewater is reduced greatly, the desulfurization wastewater can be sprayed into the flue as the base solvent, and zero emission of the desulfurization wastewater is achieved. The desulfurization wastewater zero-emission system has the advantages that the system is low in influence on smoke temperature, the tail flue and equipment, the tendency of fouling corrosion of the tail low-temperature flue and the equipment can be reduced effectively, the desulfurization efficiency is increased, and the system is simple, low in investment and low in operation cost.