729results about How to "Solve insulation problems" patented technology

The invention provides a production unit for mass producing electro-spinning nano fibre non-weaving cloth which includes: a meltdown pool 1, a metal roller 2, a receiving lace curtaining 3, a high voltage static generator 4, an initiative guide roll 51 and a passivity guide roll 52, a roller synchronous motor 62, a roller reductor 71, a roller belt pulley 72, a lace curtaining reductor 81, a lace curtaining belt pulley 82, an earth metal plate 9. Four sides and bottom of the meltdown pool 1 is composed of a ceramic outside wall 13, a middle heating layer 12 and a ceramic inner wall 11, the sandwich design structure has better insulation effect and solves heating problem of polymer melt. Compared with prior electro-spinning mass production, the unit can satisfy melt electro-spinning need, and also can be used for solution electro-spinning for realizing multi-use of one machine.

The invention relates to a lightweight energy-saving insulating concrete, belonging to building materials. The invention comprises the master batches and accessories in accordance with the following parts by weight: master batches: 30-70 parts of cementing materials, 25-60 parts of fillers, 5-10 parts of strength activators, and accessories: 1-3 parts of waterproof agents, 2.0-3.0 parts of bleeding agents, 2.0-5.0 parts of suspending agents, 0.1-0.5 part of foam stabilizer, 38-60 parts of honeycomb agents, 0.5-1.5 parts of rusty retardant agents, 0.02-10 parts of reinforcing agents, 1.2-4.2 parts of early strength agents and expanding agents and 0.6-1.4 parts of acid and alkali resistant fibers. The concrete has the advantages of high early tensile and compressive strength, no decrease and crack of later strength and simple manufacturing process. According to the requirement of the building structure, the technical target of the concrete can be realized by regulating the mixing proportion. The concrete can be used for manufacturing various products at normal temperature and is widely applied to insulating and self-waterproof building engineering.

The present invention discloses a concrete cement foaming insulation brick, taking a concrete perforated brick as a main body. The concrete perforated brick is injected with a cement foam material, so that the cement foam material and the concrete perforated brick are fully combined. By adjusting the formulation and improving the process, the present invention makes full use of industrial wastes such as fly ash and coal gangue, does not need autoclaved curing, and is small in investment and simple in process. The foaming brick produced by the present invention has excellent heat insulation and sound insulation properties, and is high in strength, good in impact resistance, low in moisture absorption, light in weight, compression resistant, good in weather resistance, environmental-friendly and energy-saving, and non-toxic. The brick has great market space and development prospects in the application field of building energy efficiency.

The invention relates to an alternative current electric crosstalk and insulation fault monitoring line selection method of a direct current system. The direct current system is formed by an upper computer, a monitoring device, a sampling system and a current sensor. The alternative current electric crosstalk and insulation fault monitoring line selection method includes the steps of extracting a ripple crest value in the direct current system through extracting of an alternating component effective value, adopting the alternative current and direct current component separation digital filtering technology, the direct current leakage current detection technology, the recommend standard 485 (RS485) isolation communication technology and the fast fourier transform algorithm (FFT) conversion technology to monitor system bus over-the-ground alternative and direct current voltage and a ripple voltage peak value in real time to give an alarm, receiving loop leakage current information uploaded by a data collector, carrying out intelligent analysis through mode matching technology, calculating grounding resistance, carrying out artificial intelligence mode matching on feature status information of each loop and configured feature rules in the system, enabling the alternative current electric crosstalk faults, ripple voltage peak value monitoring data, grounding fault and insulation fault loop status information, loop information and the like which to be displayed on a liquid crystal display, assisting operation and maintenance workers to accurately know the current status to rapidly remove the faults.

The invention discloses low-thermal-conductivity aerated concrete and a preparation method thereof, which belong to the technical field of material science and engineering science and are used for solving the key technical problem of enhancement of extra light aerated concrete. The preparation method comprises the following steps of: stirring a compound foaming agent component and a silicate substrate sizing agent according to a certain weight part ratio; molding; standing; performing autoclave curing; and cutting to obtain a hardened hydrated silicate substrate, wherein the rubber hole ratioof the obtained hardened hydrated silicate substrate is more than 0.95, the porosity is less than 3 percent, the volume ratio of a calcium hydrosilicate crystal to colloid is 1-2.5, self-heat-preserving performance and appropriate intensity of a product are realized, and when the thermal conductivity coefficient is less than 0.06 W / (m.K) and the absolute dry volume density is less than 250 kg / m<3>, the compressive strength of the aerated concrete is still higher than 2Mpa. The low-thermal-conductivity aerated concrete can be applied to self-heat-preserving wall bodies with the energy saving rates of more than 70 percent, fire-proof isolation belts for outer heat-preserving systems of polystyrene plate thin plastered outer walls, treatment of wall body heat bridge positions, shear wall heat-preserving systems and roof heat preserving.

The invention discloses a manufacturing method for a microorganism heat-insulation building material. The manufacturing method for the microorganism heat-insulation building material comprises the following steps: taking a bacteria solution which has a mineral deposition function and is prepared from microorganisms and a corresponding nutrient solution as raw materials; directly carrying out mineral deposition on various lightweight aggregates or compounding inorganic or organic cementing materials; and carrying out microorganism inactivation and pore forming to obtain novel microorganism heat-insulation plates, heat-insulation blocks, heat-insulation concrete, heat-insulation mortar and the like. By the method, the physical and mechanical properties of an existing traditional heat-insulation material can further be improved through a microorganism mineralization function and an inactivation process. Microorganism mineral deposition products are used as cementing material manufacturingand modifying building heat-insulation materials, contradiction between strength and heat insulation of the heat-insulation materials can be solved effectively, cementing materials such as cement arereduced and are even prevented from being used, resource consumption are reduced remarkably, mine excavation frequency is reduced, pollution emission is eliminated, and environment stress and haze influence are relieved. The manufacturing method for the microorganism heat-insulation building material is an environmentally friendly building material manufacturing method, and has good economic benefit, environment benefit and social benefit.

The invention discloses a protective atmosphere vacuum sintering furnace with high temperature of 1800 DEG C. A control system is connected with an electronically-controlled execution component arranged in an apparatus, a graphite sealing box is arranged in a heating chamber, an air inlet pipeline and an exhaust pipeline of a high-temperature vacuum sintering furnace are connected with the graphite sealing box. The protective atmosphere vacuum sintering furnace is characterized in that the furnace has two techniques of atmosphere sintering and vacuum sintering, and a function conversion measurement is actualized by a control program; a furnace shell is provided with a thermoelectric couple and a copper electrode; the part of a shell column body is provided with a pipe joint communicated with an evacuation unit of a vacuum system; and a square heating chamber is arranged in the furnace shell, heaters are fixed on four walls in the heating chamber, and the heater is internally provided with a sealing box and a support material frame; and the air inlet pipeline and the exhaust pipeline communicated with the sealing box passes through an upper wall and a lower wall of the heating chamber and the sealing box through a graphite pipe to communicate with the inside of the sealing box, one end of the furnace shell is provided with a gas circulating cooling blower, an inner wall of the sealing box is provided with the thermoelectric couple and the copper electrode, and the copper electrode is connected with the heater through a graphite electrode. A volatile substance sealed in the sealing box can not disperse during vacuum sintering, thereby effectively preventing the volatile substance from polluting and damaging the heater, and simultaneously achieving the effect of enabling the protective gas to take the volatile substance away to protect furnace materials, and improving the utilization ratio of the protective gas.

The invention discloses double-foaming cellular concrete and a site production construction method thereof. The volume weight of the double-foaming cellular concrete ranges from 100 KG / M<3> to 400 KG / M<3>; the heat conduction coefficient is as little as 0.020 W / M.DEG C, and the intensity is up to 5 MPa. The double-foaming cellular concrete can be widely applied to the production of light-weight heat preservation materials such as roof heat preservation materials and external wall heat preservation materials and hanging pieces such as light-weight building hanging beams, and has the purposes of the filling of light-weight hollow bricks and hollow building covers; more importantly, the double-foaming cellular concrete can be applied to the construction of underwater facilities. The site production construction method for the double-foaming cellular concrete is simple in technology and simple and convenient to operate; by special equipment, full-automatic integrated productions, such as automatic foaming, metering and proportioning, are effectively realized; upon automatic control, the production construction of the double-foaming cellular concrete is finished highly efficiently at low cost.

The invention discloses a modified nano-attapulgite clay inorganic thermal-insulation mortar coated with plant ash. The thermal-insulation mortar comprises the following raw materials in parts by weight: 50-60 parts of 42.5-level ordinary Portland cement, 20-30 parts of modified carbide slag, 10-20 parts of plant straw powder, 10-20 parts of nano-attapulgite clay, 40-50 parts of plant ash, 10-15 parts of starch emulsion, 2-3 parts of distearoyl isopropoxy aluminate, 10-15 parts of vitrified microspheres, 2-4 parts of redispersible latex powder, 0.5-1.5 parts of hydroxyethyl cellulose ether, 0.5-1 part of glass fiber, and 1-2 parts of polypropylene fiber. According to the invention, the produced thermal-insulation mortar is excellent in thermal insulation property and construction performance, high in intensity, good in weatherability, green and environment-friendly, and has extremely great market space and development prospect in the field of the building energy-saving application in China.

The invention discloses an automatic measuring system for insulating material surface charge two-dimensional distribution. The automatic measuring system comprises a sealed cavity which is internally provided with a two-dimensional electronic control displacement platform. A product to be measured is fixed to the two-dimensional electronic control displacement platform through a vertical backboard electrode, and the upper end and the lower end of the product to be measured are connected with a high-voltage electrode and a grounding electrode respectively. The movement end of a one-dimensional magnetic coupling linearly-rotating driver is provided with an insulating clamp. A Kelvin probe is fixed to the insulating clamp, the probe point of the Kelvin probe is perpendicular to the product to be measured, an output signal lead of the Kelvin probe is connected with an electrostatic potentiometer outside the sealed cavity, the signal output end of the electrostatic potentiometer is connected with a data collecting system of a computer, the other side of the sealed cavity is provided with a connecting pipe, and the tail end of the connecting pipe is provided with a vacuum pump. The insulating material surface charge two-dimensional distribution automatic measuring system is used for measuring surface charge density two-dimensional distribution of an insulating material, and the flashover characteristic study content and the charge distribution measuring means of the insulating material are enriched.

The invention, belonging to the technical field of nuclear industry measurement, particularly relates to a spent fuel pool state continuous monitoring method and a system thereof. The system comprises a liquid level, temperature measuring transducer, a transmitter unit, an installation support, a guide cylinder, a cable and an installation accessories, wherein the liquid level, temperature measuring transducer is fixed by the guide cylinder and the support, signals output by the transducer are transmitted by the cable to the remote mounted transmitter unit and are subject to calculation and compensation and other treatment and then transmitted to a main control room DSC system. According to the invention, under various operation states of nuclear power station, especially accidents, the liquid level and temperature continuous monitoring problem of the spent fuel pool from the exposure of spent fuel to the full water level is solved; simultaneously under design basis earthquake conditions and station blackout condition, the continuous monitoring problem of the spent pool is solved, thus the operator can monitor the spent pool states in real time; the system has the advantages of simple structure, convenient on-line adjustment and calibration, and easy interface with the control system, and can realize the real-time accurate continuous liquid level temperature two-parameter monitoring.

A self-leveling cement mortar dry powder for insulated composite wallboard waterproof cover, and an insulated wallboard solve technical problem in a prior art that self-leveling cement mortar with weak waterproofness causes weak insulation effect of an insulated wallboard. A self-leveling cement mortar dry powder for insulated composite wallboard waterproof cover is employed as a technique. Ingredients of the self-leveling cement mortar dry powder comprise a compound impervious component; and the impervious component is prepared by mixing a redispersible high-molecular polymer and one of an organosilicon waterproof agent and a stearate, or a mixture of the two, and accounts for 0.6-4.3wt% of the self-leveling cement mortar dry powder. A special impervious ingredient is added to enhance compactness, microdilatancy and low dry shrinkage property of the cement based self-leveling mortar, so as to substantially increase waterproof function and endurance of the cement based self-leveling mortar. Therefore, a problem that a cladded super-light foaming cement sheet material loses insulation function due to water penetration and problems of flame resistance and endurance are solved fundamentally.

The invention discloses a light cement foam insulation plate which comprises the following raw materials in parts by weight: 70-80 parts of 52.5 general silicate cement, 40-50 parts of coal ash, 30-40 parts of silicon powder, 15-20 parts of river sand, 10-15 parts of fluorite slag, 5-10 parts of argil, 15-20 parts of plant straw powder, 18-25 parts of water glass, 20-30 parts of vermiculite, 8-12 parts of foaming agent, 1-2 parts of foam stabilizing agent, 1-2 parts of hydroxyethyl cellulose, 3-5 parts of modified tree ash, 1-2 parts of polycarboxylate high-performance water-reducing agent and 300-360 parts of water. The cement foam plate produced with the method has the advantages of excellent insulation and construction performances, good bonding effect, no empty drum cracking phenomenon, strong negative air pressure resistance, high strength, light weight, pressure resistance, good weather resistance, environmental protection, energy saving, non-toxicity, harmlessness and the like, and has very wide market space and development prospect in the field of building energy-saving applications in our country.

The invention relates to a battery monomer voltage measuring circuit and a compensation method for measuring error thereof, and belongs to the technical field of power of electromobiles. The circuit comprises a high voltage gating circuit, a high common-mode measuring circuit, an isolation amplifying circuit, an absolute value circuit, a singlechip digital core circuit, a communication circuit and a power circuit. The compensation method for measuring error comprises the following steps: analyzing the measuring error, and obtaining a modifier formula for the monomer voltage measurement. Aiming at the characteristics of a great number of voltage monomers, gradual accumulated potential and high absolute potential in the battery, the high-voltage part and the lower-voltage part are separately arranged, thereby solving the problems of electromagnetic compatibility and high-voltage insulation in the high-density multichannel monomer voltage measurement. The monomer voltage measuring circuit has the advantages of high precision, high reliability, small size and low measurement cost per monomer. The error correction method can be used for acquiring high-precision battery voltage measurement results (the error is less than 10 mV), and is applicable to monomer voltage on-line precision measurement of power batteries for electromobiles.

The invention discloses a power battery heat management system based on flat plate heat pipes. The power battery heat management system comprises a module box body and a module box body top cover, wherein at least two individual battery group shells are placed in the module box body; at least two battery module groups formed by connecting individual batteries in series or in parallel are placed in each individual battery group shell; a flat plate heat pipe with a cooling system is arranged on the surface of each individual battery and is attached to the surface of the corresponding individual battery; cooling water circulates in the flat plate heat pipes. The power battery heat management system has the advantages of high efficiency, simple structure, stable and reliable operation, functional diversity and the like, is used for performing efficient heat management, including heat dissipation, heating, waste heat recycling and the like, on a power battery under various charge-discharge conditions, is applicable to various types of electric equipment driven by power batteries, and has wide market prospect.

The invention discloses a modified nano-kieselguhr inorganic thermal-insulation mortar coated with plant ash. The thermal-insulation mortar comprises the following raw materials in parts by weight: 50-60 parts of 42.5-level ordinary Portland cement, 20-30 parts of coal slack powder, 10-20 parts of plant straw powder, 10-20 parts of nano-kieselguhr, 40-50 parts of plant ash, 10-15 parts of starch emulsion, 2-3 parts of tetraisopropyl di(dioctylphosphate) titanate, 10-15 parts of modified vitrified microspheres, 2-4 parts of redispersible latex powder, 0.5-1.5 parts of methyl cellulose ether, 0.5-1 part of wood fiber, and 1-2 parts of polypropylene fiber. According to the invention, the produced thermal-insulation mortar is excellent in thermal insulation property and construction performance, high in intensity, good in weatherability, green and environment-friendly, and has extremely great market space and development prospect in the field of the building energy-saving application in China.

A production of high-purity graphitic carbon material and its apparatus are disclosed. The process involves raw material system, roasting system and post-treating system: 1) breaking forged petroleum coke by raw material system with grain size up to 0-60 mm and controlling water content <=5%; 2) delivering the treated material into vertical roasting electric furnace and high-temperature treating, preheating, purifying and graphitizing under high-temperature, controlling temperature at 1800-3000deg.C, cooling and discharging at 50-250deg.C with 6-21 hrs; and 3) breaking and screening discharged material by post-treating system with grain size up to 0-50 mm, classifying and packing. The vertical roasting electric furnace consists of upper and lower electrode, supporting frame, material disc, the third cooling section, electrode cooling cover, furnace core carbon fireproof material, furnace casing, furnace lid , smoke conduit, and bucket.

A low-temp steam curing method for in-situ cast box beam includes such steps as spraying insulating layer on external mould, laying down steam tubes, building steam curing shed, burying a temp strain gauge at each measuring point, parallelly connecting them via a switch to a reader, laying aside, heating, making temp constant, cooling and post curing. Its advantages are high speed, high strength and no crack.

The invention discloses a film temperature sensor for turbine blades of an aero-engine. The film temperature sensor comprises a transition layer, a thermal growing layer, an insulating layer and a thermocouple layer which are sequentially connected, wherein the thermocouple layer is formed by lapping a first thermocouple and a second thermocouple through one end part, and the lapping part forms athermal connecting point which is a measuring end; an outgoing conductor is a fine wire which has the same quality as the first thermocouple and the second thermocouple; and the outgoing conductor iscorrespondingly connected to the other end part of each of the first thermocouple and the second thermocouple through high-temperature conductive glue. According to the film temperature sensor for theturbine blades of the aero-engine, a film layer structure of the sensor is specially designed for the aero-engine in a high-temperature severe environment; the film sputtering, annealing and other preparation technologies are optimized; the ion deposition technology is carried out to directly deposit a plurality of layers of films on the surfaces of the turbine blades, and thus the function and structure integrated film sensor is obtained; the adhesion strength of the film layers is improved; the problems such as high-temperature insulating of the film layer, separating and signal exporting can be solved; and the total thickness of the film sensor is less than 25 microns, and the maximum measurement temperature is 1100 DEG C.

The invention discloses a high thermal conductivity and insulating epoxy resin composition and a preparation method. The epoxy resin composition is prepared by curing the following raw materials underthe action of a curing agent and an accelerator: 100 weight parts of an epoxy resin prepolymer, 5-80 weight parts of thermal conductive and insulating filler and 10-30 weight parts of microspheres. The thermal conductive and insulating filler is composed of thermal conductive powder and melanin structure thermal conductive insulating layer coated on the surface. The thermal conductive powder is elemental metal or carbon-based powder, and the melanin structure thermal conductive insulating layer is obtained by surface modification on the thermal conductive powder through at least one of dopa,dopamine, dopamine hydrochloride and tyrosine. The preparation method includes: curing the components according to the dosage to obtain the high thermal conductivity and insulating epoxy resin composition. The composition provided by the invention satisfies good thermal conductivity and electrical insulation performance at the same time, well solves the matching problem of thermal conductivity andinsulation performance encountered when high power devices work, and can meet the performance requirements of current electronic products for thermal conductive and insulating high polymer materials.

The invention relates to a small CPT atomic clock physical system, and belongs to the technical field of atomic frequency standard. The physical system comprises a laser portion and an atom air chamber portion. The laser portion comprises a VCSEL laser tube, an aperture diaphragm, and a [lambda] / 4 wave plate. The atom air chamber portion comprises an atom air chamber, a C field coil, a thermistor, a low electromagnetic film electric heating sheet, and a photoelectric detector. The C field coil uses a reverse Helmholtz coil structure to realize. Heating methods of the low electromagnetic film electric heating sheet and high-frequency AC electric heating are used to heat the atom air chamber. The system uses a vacuum heat insulation technology to package. The output frequency of the physical system is high in stability, stable in performance, small in volume, low in power consumption, and low in cost, and is especially suitable to be used for a glass type atom air chamber whose sealing port is on the central position of a cylindrical surface.

The invention relates to a sand-air impervious concrete masonry block adopting thin quartz sand, cement, lime and gypsum as main base materials and adopting aluminum powder as foaming agent; wherein, the sand-air impervious concrete block comprises a hydrophobic waterproof agent which occupies 0.02 to 0.40 percent of the total amount according to the weight percentage. The preparation method comprises the steps as follows: the components are mixed to form a mixture according to the formulation, and then the mixture is stirred, settled, cut and later maintained for 10 to 12 hours under high temperature of 180 to 200 DEG C and high pressure of 10 to 12 standard atmospheric pressures so as to obtain the sand-air impervious concrete masonry block. The invention has the advantage that a certain proportion impervious materials are added into the material of the masonry block so as to manufacture the masonry block provided with the impervious capability; after the masonry block is adopted as the single material for walling, then the block is provided impervious capability after walling by the block. The sand-air impervious concrete masonry block can be regarded as the novel walling material without adopting the waterproof material to reach the waterproof and impervious requirement.

The invention discloses a combined type high-voltage DC circuit breaker with a self-energizing ability, and a self-energizing strategy thereof. According to the combined type high-voltage DC circuit breaker and the self-energizing strategy thereof, a daily through-current branch of a traditional combined type high-voltage DC circuit breaker is improved, a load transfer switch is changed from the original mode of IGBT series connection to a mode of full-bridge submodule series connection, and the corresponding self-energizing strategy is designed, so that capacitors in submodules operate in an energized manner under normal working condition. The load transfer switch of the circuit breaker typology is energized by means of the capacitors of the submodules directly without the need of external power supply, the insurmountable insulation problem in engineering is avoided, and the application prospect of the circuit breaker in a high-voltage DC power grid can be improved.

The invention relates to a tightly coupling hollow high-temperature superconducting inductor comprising a short connection bus, a nonmetallic Dewar type container, a clockwise winding, an anticlockwise winding, liquid nitrogen, a refrigeration system and a polyimide film, wherein, the clockwise winding and the anticlockwise winding are dipped into the liquid nitrogen which is stored in the nonmetallic Dewar type container; the short connection bus is respectively connected with the clockwise winding and the anticlockwise winding, and the refrigeration system, the nonmetallic Dewar type container, the clockwise winding, the anticlockwise winding and the liquid nitrogen are connected to form a liquid nitrogen circulation cooling system; the insulation material polyimide film is arranged between turns and layers of the clockwise winding and the anticlockwise winding. Compared with the traditional inductor, the invention has the advantages of small volume, light weight, high reliability, low power consumption and the like, is characterized by strong current limiting capacity and automatic current equalizing ability, avoids the defects of oil leakage, easy burning and the like of the oil dipping inductor and ensures operation safety. The invention has no iron cores and no ferromagnetic saturation, and has favorable inductance linearity.

Provided are a fireproof vacuum insulation panel for a building external thermal insulation system and a preparation method thereof. The fireproof vacuum insulation panel is composed of gas-phase silica silicon carbide powder, glass fibers and a glass fiber aluminum plastic compound package bag, can be mixed with admixture, has the double functions of thermal insulation and fire resistance and can effectively resolve the problems of thermal insulation and fire resistance in an existing building external thermal insulation system. The gas-phase silica, the admixture, the silicon carbide and the glass fibers are placed in a smashing and mixing machine to be smashed and evenly mixed, then mixed materials are poured in a square hard mould to be pressed and formed, the formed compound core materials are placed in the glass aluminum plastic compound package bag to be vacuumed until the vacuum degree is smaller that 1 Pa, and the fireproof vacuum insulation panel is obtained by package. Thus, the fireproof vacuum insulation panel is simple in process, good in high temperature resistance and fireproof performance, low in heat conductivity coefficient, free of thermal treatment, short in period, low in cost, capable of effectively substituting organic cystosepiment in the existing building external thermal insulation system, and suitable for large-area preparation and large-scale production.

The application relates to a fuel cell vehicle thermal management method. The fuel cell vehicle thermal management system includes a fuel cell subsystem, a power battery subsystem, a passenger compartment heating subsystem, and a heat exchange control subsystem. The method includes steps of detecting a current ambient temperature T; and when the current ambient temperature T is greater than or equal to an ambient temperature threshold T1 at which a power battery in the power battery subsystem requires thermal insulation and the passenger compartment heating subsystem requires heat supply, enabling the fuel cell vehicle to be in a normal environment startup mode, otherwise, enabling the fuel cell vehicle to be in a low-temperature environment startup mode. The fuel cell vehicle thermal management method solves the rapid startup of the fuel cell and the thermal insulation of the power battery at low temperature.

The invention discloses a transmission line dynamic loss measurement system and a transmission line dynamic loss measurement method, which belong to the technical field of high-voltage transmission line detection. The transmission line dynamic loss measurement system is based on global positioning system (GPS) clock pulse synchronous triggering, and comprises voltage and current acquisition systems and industrial personal computer units which are arranged at substations at the two ends of a transmission line respectively. Voltage and current signals are extracted by utilizing a zero-flux current transformer, and are transmitted to a data acquisition card in an industrial personal computer by an optically powered data link (OPDL) photoelectric link system, the data acquisition card is triggered by using GPS clock pulses to realize the synchronism of voltage and current acquisition at the front and tail ends of the line, and the power of the two ends of the line is calculated by using an instantaneous power method to obtain the dynamic loss of the whole transmission line. The simultaneous acquisition of voltage and current at the two ends of the line is realized, a numerical value of the synchronization accuracy is less than 0.1 microsecond, high measurement accuracy and convenience of operation are ensured, the problem of insulation is solved, and potential safety hazards are avoided.

The invention discloses a pre-combusted aircraft engine plasma igniter. The pre-combusted aircraft engine plasma igniter comprises an outer tube, a ceramic tube fuel channel, a cathode portion, an anode, an insulation sleeve, a bushing and a top cover; the cathode portion is installed on the middle-lower portion of the ceramic tube fuel channel in a sleeving mode, and a nozzle is arranged at the front end of the ceramic tube fuel channel; the insulation sleeve is installed on the middle-upper portion of the cathode portion in a sleeving mode and arranged in the outer tube; air inlet holes areformed in the outer wall of the lower portion of the outer tube, the anode is arranged under the air inlet holes, the upper portion of the anode is located in the outer tube and is in threaded connection with the outer tube, and the anode is a hollow revolving body; the cathode portion comprises a cathode base and a cathode, the upper portion of the cathode is in threaded connection with the lowerportion of the cathode base, and a spiral groove is formed in the middle of the inner wall of the anode; the lower end of the bushing is fixedly connected with the upper end of the cathode base; andthe top cover is installed outside the bushing in a sleeving mode, and the lower portion of the top cover is fixedly connected with the upper end of the outer tube. According to the pre-combusted aircraft engine plasma igniter, the ceramic tube fuel channel is additionally installed in the cathode portion, a reaction occurs outside the anode, therefore, electrodes are protected, the safety is improved, and the insulating problem is well solved.

Belonging to the technical field of metal material preparation, the invention relates to a short-time and high efficiency deforming TiAl alloy heat treatment method. High energy electropulsing is applied to deforming TiAl alloy to conduct heat treatment so as to improve the microstructure and enhance mechanical properties. The heat treatment temperature is controlled by controlling the electropulsing parameters. The applied high energy electropulsing has frequency of 60-500Hz, a pulse width of 10-300micros, a peak current density of 20-500A.mm<-2>, and a highest temperature up to 1330DEG C, can meet the heat treatment temperature requirement of four typical TiAl alloy microstructures, also makes the deforming TiAl alloy microstructure achieve uniform and fine effects, and can improve the plasticity and strength. The method for treatment of deforming TiAl alloy can greatly shorten the heat treatment time and improve the energy utilization efficiency, thus having wide application prospects.

The invention relates to a pottery particle and the preparing method thereof. An ultralight silt pottery particle is characterized in that it is made from silt and coke, and its raw materials comprise: silt 60-98m%, coke 2-40m%, flyash 0-25m% and bauxite 0-25m%, where the sum is 100%. And its preparing method comprises preprocessing raw materials, selecting raw materials, moulding, drying, presintering, baking and obtaining finished product. And it has large numbers of cellular pores, higher intensity, and small water absorption. And the method can turn silt into resource and solves secondary pollution problem.