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65results about How to "Reduced risk of bursting" patented technology
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High strength sprayed concrete for high ground temperature tunnels and preparation method thereof
The invention discloses a high strength sprayed concrete for high ground temperature tunnels and a preparation method thereof. The concrete comprises following raw materials: cement, fly ash, slag powder, sand, coarse aggregate, glass beads, PVA fibers, steel fibers, modified rubber, a water reducer, a setting accelerator, and water. Low melting point water-soluble PVA fibers are adopted, after concrete reaches the melting point of the PVA fibers, fibers are melted, tunnels are formed, thus water steam in the concrete can be conveniently dissipated through the tunnels, the steam pressure in the concrete is reduced, the risk of bursting is reduced, at the same time, the melted water-soluble PVA fibers can largely enhance the inner cohesive force of concrete, and the cracking of a cement face is avoided. Through the cooperation of all raw materials, the prepared concrete has the characteristics of low heat conductivity coefficient, good anti-permeability, high interfacial bond strength,and little long-term strength loss. The long-term strength of concrete after spraying is largely improved. The cracking of high ground temperature concrete is avoided.
Owner:CHANGAN UNIV
PVD vacuum coating process and coating workpiece
ActiveCN110616411AUniform coatingReduce wear and tearVacuum evaporation coatingSputtering coatingMetallurgyMegasonic cleaning
The invention discloses a PVD vacuum coating process. The PVD vacuum coating process comprises the following steps that 1, the surface of a base material is treated, specifically, the surface of the base material is wiped and washed, and degreasing and dedusting treatments are conducted; and the cleanness and dryness of the base material are ensured; 2, prime coating and drying of the base material are conducted, specifically, the surface of the base material is coated with coating oil, then drying is conducted, the drying temperature is 60-70 DEG C, and the drying time is 2 hours; 3, coatingis conducted, specifically, the base material in the step 2 is placed in a vacuum coating furnace, a vacuumizing device vacuumizes the vacuum coating furnace, and after the vacuum degree reaches the requirements, the vacuum coating furnace starts coating; 4, cleaning is conducted, specifically, the coated workpiece is put into an ultrasonic cleaning device for cleaning; and 5, drying is conducted,specifically, the cleaned workpiece is dried, and packaging is conducted.
Owner:海盐鑫中岳电子科技有限公司
Self pressure release single mode microwave reaction system
ActiveCN105056861AImprove stabilityHigh speedPreparing sample for investigationEnergy based chemical/physical/physico-chemical processesMagnetic tension forceChemical reaction
A self pressure release single mode microwave reaction system belongs to the field of analysis instruments and consists of a magnetron, a single mode cavity assembly, a single mode sealing cover assembly, a sealing cover sliding assembly, a test tube assembly, a magnetic stirring assembly, an automatic pressure release assembly, an infrared temperature measuring assembly and a single mode cavity lifting assembly; since an automatic pressure release function is integrated in the system, the risk that a test tube is exploded in a reaction process is greatly reduced, and reliability of a microwave chemical reaction system is improved; in a decomposition process, if pressure in the test tube is higher than a predetermined safety pressure value, the system can release pressure automatically, and ensures safety of the decomposition process, after the pressure in the test tube is reduced to be below the safety pressure value, the system can continuously recover a sealing work state, after the decomposition work is done, the system can be subject to automatic cooling and pressure release, and can be uncapped, the whole decomposition process is fast, safe and reliable, and the system can be widely used for the design and manufacture fields of a microwave reaction device.
Owner:PREEKEM SCI INSTR
Online monitoring method for low-cycle fatigue crack of aero-engine turbine disc
InactiveCN111397909AEasy to monitor onlineImprove computing efficiencyMachine part testingGas-turbine engine testingSignal onLoad cycle
The invention discloses an online monitoring method for a low-cycle fatigue crack of an aero-engine turbine disc. An eddy current displacement sensor and a key phase sensor are arranged on a wheel disc shaft of a low-cycle fatigue tester of the aero-engine turbine disc so as to acquire a wheel disc shaft radial displacement vibration signal and a key phase pulse signal on line; a vibration signalof the wheel disc at a preset rotating speed in each load cycle is obtained; a real part and an imaginary part of the crack index are extracted from the vibration signal by adopting full-period discrete Fourier transform; and crack indexes of a plurality of cycles at the beginning of the test are selected as baselines, relative amplitudes and relative phases of the crack indexes are formed by obtaining vector differences to the baselines in the subsequent cycles, an alarm threshold is set according to a 3sigma criterion, and the fatigue crack of the turbine disc is monitored. According to theinvention, damage to the tester caused by burst of the wheel disc is avoided, shutdown inspection in the low-cycle fatigue test process is not needed, the test period can be shortened, and the test cost is reduced.
Owner:XI AN JIAOTONG UNIV
Bending glass tempering and blast cooling device and cooling method thereof
The invention discloses a bending glass tempering and blast cooling device and a cooling method thereof. The cooling device consists of a blast blower, an air power buffering chamber, an upper air chamber, a lower air chamber, an upper air outlet grid, a lower air outlet grid and a connecting pipeline. The upper air chamber and the lower air chamber are respectively provided with a plurality of air distributing channel outlets; the air chambers are manufactured to have inclined rectangular pyramid structures according to the air power distribution principle, so that each air distribution channel outlet has uniform air quantity and air pressure, and connected with one air outlet grid; and the air outlet grid consists of an interface and a plurality of rectangular-pyramid-shaped air grid sheets formed according to the air power distribution principle, a plurality of small air outlets are arranged on one surface of the air grid sheet, corresponding to glass to be cooled, air from the blast blower enters the air power buffering chamber for buffering, then enters the air chambers and is uniformly distributed to all the air grids by the air chambers and then uniformly distributed to all the air grid sheets, and air blown from the small air outlets has uniform air quantity and air pressure, thereby realizing the uniform cooling on the whole piece of glass, and manufacturing excellent bending and tempering glass products.
Owner:陈永乐
Pressure reduction device for domestic tap water pipes
InactiveCN105042266AReduced risk of burstingLow costEqualizing valvesPipe elementsWater flowEngineering
The invention discloses a pressure reduction device for domestic tap water pipes. The pressure reduction device comprises a water inlet manifold and a water outlet pipe. A pressure reduction mechanism is further connected between the water inlet manifold and the water outlet pipe. The pressure reduction mechanism comprises a pressure reduction segment, a fixing arm, a spring, a throat pipe opening and a piston. The fixing arm is fixed to the front end of the pressure reduction segment in the water flow direction. The throat pipe opening is fixed into the rear end of the pressure reduction segment in the water flow direction. The piston is located at the throat portion of the throat pipe opening. One end of the spring is connected with the fixing arm, and the other end of the spring is connected with the piston. The throat portion of the throat pipe opening and the front end of the piston form a matching face for driving the piston to close the throat portion of the throat pipe opening under the action of the spring. Compared with the prior art, high-pressure water supply can be changed into flow-adjustable low-pressure water supply, the risk that the domestic tap water pipes and auxiliary pipes are cracked due to overly-high pressure, and the pressure reduction device is remarkable in pressure reduction effect, concise in structure, low in cost, suitable for being applied to arrangement of domestic tap water pipes and wide in popularization range.
Owner:HOHAI UNIV
Low-cost high temperature resistant fiber reinforced cement-based composite material
The invention relates to a low-cost high temperature resistant fiber reinforced cement-based composite material, and belongs to the technical field of building materials. The material is characterizedin that the volume percentage between reinforcing fibers and cement-based composite material matrix is 2.4-5.6:100, and the volume ratio of basalt fibers to polypropylene fibers and calcium carbonatewhiskers is 1:0.1-1.2:0.3-5.3. According to the high temperature resistant, burst resistant, high durability and low cost fiber reinforced cement-based composite material, the high temperature bearing capability and the burst resistance of the cement-based composite material are significantly improved due to the addition of the calcium carbonate whiskers, the polypropylene fibers and the basalt fibers, and the material has good durability, low cost and good market popularization value.
Owner:DALIAN UNIV OF TECH
Multi-stage pump rotor for turbo-molecular pump
ActiveCN101828040AReduced risk of burstingMinimize the ultimate harmPump componentsAxial flow pumpsTangential forceMechanical engineering
The invention relates to a multi-stage pump rotor (10) for a turbo molecular pump. The pump rotor (10) has at least two separate blade disk rings (17), each having a rotor ring (12) and at least one blade disk (14). A cylindrical reinforcement pipe (18), which surrounds the rotor rings (12) of the blade disk rings (17) on the outside without clearance, is provided between the blade disks (14) of adjacent blade disk rings (17). The reinforcement pipe (18) absorbs a large part of the tangential forces occurring during operation such that the pump rotor (10) has improved stability at high rotor speeds.
Owner:LEYBOLD HERAEUS GMBH & CO KG
Air curtain protection device for laser cleaning and protection method
ActiveCN105478416APrevent proliferationProtect healthCleaning processes and apparatusEngineeringIrradiation
The invention provides an air curtain protection device for laser cleaning and a protection method and can effectively collect pollutants in laser cleaning, guarantee cleanliness of a laser lens and prevent lens glass from being broken and damaged. The air curtain protection device for laser cleaning comprises a protection cover, a first air outlet array, a suction port and a second air outlet array, wherein the protection cover is provided with a horn-shaped inner chamber with a thin upper part and a thick lower part, the upper end of the inner chamber is in sleeve joint with the laser cleaning lens, and an opening is formed in the lower end of the inner chamber; the first air outlet array is formed in the side wall of the inner chamber, and protection space surrounding the laser lens is formed by compressed air exhausted by the first air outlet array and side walls; the suction port is formed sideways below the protection cover; the second air outlet array is formed in the peripheral edge of the lower end of the inner chamber, compressed air exhausted by the second air outlet array surrounds a laser irradiation area on the surface of a cleaned workpiece, and projection of air flow at each air outlet of the second air outlet array on the horizontal plane points to the suction port.
Owner:山西玉华再制造科技有限公司 +2
Double single-ended pumped two-rod series connection solid state laser
ActiveCN103390854AReduced risk of burstingImprove light extraction efficiencyOptical resonator shape and constructionActive medium shape and constructionSolid-state laserSemiconductor
The invention discloses a double single-ended pumped two-rod series connection solid state laser. The double single-ended pumped two-rod series connection solid state laser comprises a first laser crystal, a first semiconductor laser pump source, a first pump light recycling device, a first thermal compensation negative lens, a second laser crystal, a second semiconductor laser pump source, a second pump light recycling device and a second thermal compensation negative lens; the first semiconductor laser pump source and the first pump light recycling device are formed into an excitation device of the first laser crystal; the second semiconductor laser pump source and the second pump light recycling device are formed into an excitation device of the second laser crystal. The double single-ended pumped two-rod series connection solid state laser has the advantages of improving the luminous efficiency of the laser due to the fact that pump light through the laser crystals is recycled through the pump light recycling devices; further improving the output power and stability of the laser due to the fact that compensation is performed on the thermal lens effect of the laser crystals through the thermal compensation negative lenses; achieving high-efficiency and high-output-power stable operation of the solid state laser.
Owner:ZHEJIANG JIATAI LASER SCI & TECH CO LTD
Lamp with double filament
InactiveCN1902731ASimplify the manufacturing processEasy to pass throughIncadescent body mountings/supportOhmic-resistance heating devicesElectrical conductorEngineering
The present invention relates to a lamp comprising a lamp vessel (101) having an inner diameter and an incandescent body (102) arranged in the lamp vessel and connected to current supply conductors (106). The lamp further comprises a filament (103) arranged around said incandescent body along at least half the length of said incandescent body, which filament has an outer diameter substantially equal to the inner diameter of the lamp vessel.
Owner:KONINKLIJKE PHILIPS ELECTRONICS NV
Hot bending forming device for vehicle-mounted glass processing and processing method thereof
ActiveCN114436513AReduced risk of burstingGuaranteed surface flatnessGlass reforming apparatusGlass productionIn vehicleEngineering
The invention discloses a hot bending forming device for vehicle-mounted glass processing and a processing method thereof, relates to the related field of glass processing, and aims to solve the problems that an existing small hot bending forming device is small in occupied area but difficult to continuously carry out processing production work, and a large continuous hot bending furnace generally aims at processing production of a large number of products and transversely occupies the plant area, so that the production efficiency is low. And the occupied space is huge. Side supporting frames are fixedly welded to the front end and the rear end of the upper end of the supporting bottom plate, side fixing vertical plates are fixedly welded to the upper end of the supporting bottom plate along the inner sides of the side supporting frames, and a preheating mechanism, a heating mechanism, a first cooling mechanism and a second cooling mechanism are fixedly welded to the upper ends of the two side fixing vertical plates. The preheating mechanism, the heating mechanism, the first cooling mechanism and the second cooling mechanism are sequentially arranged from left to right, and the side supporting frame comprises a first mounting transverse plate, a first connecting vertical plate, a second mounting transverse plate and a second connecting vertical plate.
Owner:广东睿华光电科技有限公司
Capacitive voltage divider
InactiveCN108614140AReduce the impactExtended service lifeVoltage dividersEpoxyCapacitive voltage divider
The invention discloses a capacitive voltage divider. A lightning protection structure is arranged between a high voltage electrode plate and a wiring head, and therefore, the influence of lightning weather on the capacitive voltage divider can be decreased, and the use safety of workers can be improved; an optical voltage temperature sensing head is arranged in a base; sensor error can be reducedthrough using a self-healing compensation technology; round steel bars are arranged at two sides of the interior of a high epoxy sleeve; and after a high-pressure expander expands to a certain extent, the round steel bars will pierce the high-pressure expander, and therefore, the risk of the explosion of the high epoxy sleeve can be lowered. The capacitive voltage divider has the advantages of long service life, high safety factor, and bright market prospect.
Owner:镇江盛创盈机电科技有限公司
Laser welding system pulse xenon lamp power detection circuit and method thereof
ActiveCN105445543AMonitor usage in real timeReal-time monitoring of agingPower measurement by digital techniqueWater leakageEngineering
The invention discloses a laser welding system pulse xenon lamp power detection circuit and a method thereof. The real-time monitoring of the use condition and the aging degree of the pulse xenon lamp can be realized, and the photoelectric conversion efficiency of the laser welding machine can be known, and therefore the risks of the crystal explosion caused by the aging of the pulse xenon lamp, or the fogging and the water leakage of the crystal of the laser device can be reduced, and at the same time, the stability of the laser control system can be improved.
Owner:厦门法博科技有限公司
Heat exchange type water-storage electric water heater
PendingCN108444104ASave spaceReduced risk of burstingStorage heatersControl of fluid heatersElectricityWater storage
The invention discloses a heat exchange type water-storage electric water heater. A cavity is arranged inside a box body; the upper side of the cavity is rotatably connected with a box cover; two gasexhaust holes are formed inside the box cover for preventing excessively great pressure caused by heating; the box body is mainly used for loading deionized water or heat conduction oil; deionized water or heat conduction oil is heated by a heating tube; and deionized water or heat conduction oil is heated by a spiral tube for conducting and heating through water, so that the risk due to the factthat hot water to be used in direct contact with the heating tube generates water scales to cover an electric heating tube is avoided; moreover, a water path does not apply pressure to the box body, and the box body can be manufactured into various forms according to the needs while a pressure bearing problem does not need to be considered excessively, so that space usage is saved; besides, a flowing water body is heated, so that the problem that a retained water body in the conventional electric water heater breeds bacteria can be avoided, and use health degree of people is improved. Besides,the length and the forms of a water outlet tube and a water inlet tube are arranged, so that the electric isolating effect is improved from the physical layer.
Owner:宋秋云
Automatic pressure relief type single-mode microwave reaction system
ActiveCN106693855AImprove stabilityHigh speedPreparing sample for investigationEnergy based chemical/physical/physico-chemical processesEngineeringTesting tubes
Owner:PREEKEM SCI INSTR
A kind of high-strength shotcrete for high ground temperature tunnel and its preparation method
The invention discloses a high strength sprayed concrete for high ground temperature tunnels and a preparation method thereof. The concrete comprises following raw materials: cement, fly ash, slag powder, sand, coarse aggregate, glass beads, PVA fibers, steel fibers, modified rubber, a water reducer, a setting accelerator, and water. Low melting point water-soluble PVA fibers are adopted, after concrete reaches the melting point of the PVA fibers, fibers are melted, tunnels are formed, thus water steam in the concrete can be conveniently dissipated through the tunnels, the steam pressure in the concrete is reduced, the risk of bursting is reduced, at the same time, the melted water-soluble PVA fibers can largely enhance the inner cohesive force of concrete, and the cracking of a cement face is avoided. Through the cooperation of all raw materials, the prepared concrete has the characteristics of low heat conductivity coefficient, good anti-permeability, high interfacial bond strength,and little long-term strength loss. The long-term strength of concrete after spraying is largely improved. The cracking of high ground temperature concrete is avoided.
Owner:CHANGAN UNIV
Filtering and recycling system of suction pressure feed tank truck and suction pressure feed tank truck
PendingCN112340461AAvoid cloggingGuaranteed unobstructedCombination devicesBulk conveyorsCyclonic separationProcess engineering
The invention relates to a filtering and recycling system of a suction pressure feed tank truck and the suction pressure feed tank truck. The filtering and recycling system comprises a recycling pipeline, a cloth bag filtering device and a cyclone separating device, and further comprises a flow control assembly, wherein the cloth bag filtering device and the cyclone separating device communicate with each other; one end of the recycling pipeline communicates with both the cloth bag filtering device and the cyclone separating device; the other end of the recycling pipeline is used for communicating with a storage tank; the flow control assembly comprises a flow detecting element, a control element and a valve; the valve is arranged on the recycling pipeline and positioned at the end close to the storage tank; the flow detecting element is arranged on the recycling pipeline and used for detecting the material flow in the recycling pipeline; the output end of the flow detecting element iselectrically connected with the input end of the control element; and the output end of the control element is electrically connected with the input end of the valve. The suction pressure feed tank truck comprises the above filtering and recycling system. Therefore, the recycling pipeline can be effectively prevented from being blocked during back suction, and then the normal use of the filteringand recycling system can be guaranteed.
Owner:SGIS SONGSHAN CO LTD
Dry-type transformer with high-temperature protection function
ActiveCN113451000AEffective cooling protectionExtended service lifeTransformers/inductances coolingTransformers/inductances casingsThermodynamicsTransformer
The invention discloses a dry-type transformer with a high-temperature protection function, and belongs to the technical field of dry-type transformers. According to the dry-type transformer with the high-temperature protection function, when the temperature of a transformer body abnormally rises, gas in a cooling tank is heated to expand to break a pre-fracture layer, at the moment, cooling liquid enters the cooling tank, and the transformer body can be effectively and temporarily cooled and protected, so the reaction and operation time of workers is prolonged; meanwhile, when the temperature continues to rise, a trigger layer continues to expand to extrude a protective deformation ball to a certain degree, mixed powder and glue raw materials in the protective deformation ball can flow out and be mixed after a pre-breaking layer is broken, and can be quickly polymerized, cured and adhered, so the interior of the first cavity becomes firmer, thereby improving the strength of the outer protective layer, improving the overall strength of the protective sleeve, and improving the use effect of the protective sleeve and the use safety of the transformer body.
Owner:NANTONG XINYUAN ELECTRICAL MFG CO LTD
Anti-explosion automatic breathable electric hot water bag
ActiveCN105213089AReasonable structureReduced risk of burstingTherapeutic coolingTherapeutic heatingFilm structureEngineering
The invention relates to an anti-explosion automatic breathable electric hot water bag. The anti-explosion automatic breathable electric hot water bag comprises a water bag body. A heater is arranged in the water bag body. A power jack connected with the heater is arranged on the outer portion of the water bag body. An exhaust port and a water injection opening are both formed in the water bag body. The inner portion of the exhaust port is connected with a breathable film structure. A water injection nozzle which can prevent injected liquid from overflowing in the reverse direction is arranged in the water injection opening.
Owner:杭州奥格工业设计有限公司
Binder for monolithic refractory material and preparation method thereof
ActiveCN103922764BFlexible and easy to control coagulation timeGood linear relationshipRefractoryCarboxylic acid
The present invention discloses a binder for an unshaped proof-fire material, and a preparation method thereof. The raw materials of the binder comprise, by mass, 30-70% of alumina, 20-60% of magnesium oxide, and 5-20% of an activator, wherein the activator is a mixture of 40-80% by mass of metasilicic acid, 0-40% by mass of polycarboxylic acid and 0-50% by mass of elemental silicon. According to the present invention, under the effect of the activator, alumina and magnesium oxide in the micro-powder raw material can be subjected to controllable and rapid condensation in the aqueous solution to produce the binding strength so as to well solve the defect of the aluminate cement binding agent and improve the performance of the unshaped proof-fire material.
Owner:湖北斯曼新材料股份有限公司
Adhesive combined vertical roller
InactiveCN105251772AReduced risk of burstingExtended service lifeRollsMetal rolling arrangementsManufacturing cost reductionMethacrylate
The invention discloses an adhesive combined vertical roller, and particularly relates to a vertical roller used for hot rolled strip steel. The adhesive combined vertical roller comprises a roller sleeve and a shaft core which are glued and fixed through a cylindrical part fixation adhesive. A methacrylic ester fixation adhesive serves as the cylindrical part fixation adhesive. The working temperature of the cylindrical part fixation adhesive is -55 DEG C to 230 DEG C, the shear strength of the cylindrical part fixation adhesive is 15-32 MPa, the viscosity of the cylindrical part fixation adhesive is 125-7500 mPa s, the filling gap of the cylindrical part fixation adhesive is 0-0.5 mm, and the initial fixing time of the cylindrical part fixation adhesive is 10-60 min. The surface roughness of the combination face of the roller sleeve and the shaft core is Ra0.4 to Ra12.5. The adhesive combined vertical roller solves the problem that the vertical roller cracks due to unreliable factors of press fit force transmission of interference linkage, key linkage and the like and excessively-large assembly stress, and has the beneficial effects of being easy and convenient to assemble and stable in fixation force; and the machining accuracy can be reduced, the manufacturing cost can be reduced, the assembly process can be simplified, the production efficiency can be improved, and the energy consumption can be reduced.
Owner:SINOSTEEL XINGTAI MACHINERY & MILL ROLL
Gas cooker heat-recycle heating cup device
PendingCN108613228AReduce the temperatureExtended service lifeLighting and heating apparatusWater heating stoves/rangesThermal energyWater wheel
The invention relates to a gas cooker heat-recycle heating cup device. The device comprises a turbine air pump, wherein the turbine air pump is internally provided with a turbine air wheel; the turbine air wheel is connected with a turbine water wheel through a turbine shaft; the turbine water wheel is arranged in a turbine water pump; the turbine water pump is communicated with a heat absorptiondisk; and the heat absorption disk is connected with the turbine water pump through a heating pipe. The device sufficiently utilizes afterheat of gas cookers to heat food, so that the heat utilizationrate of the gas cookers is improved and the energy is saved.
Owner:WUXI CITY COLLEGE OF VOCATIONAL TECH
Os element secondary oxidative distillation separation device and separation method and application thereof
ActiveCN111983005AReduce acidityReduce collection timePreparing sample for investigationMaterial analysis by electric/magnetic meansDistillationPhysical chemistry
The invention relates to an Os element secondary oxidative distillation separation device comprising a gas source device, a gas washing device, a sample dissolving device, a heating device and an OsO4collecting device, wherein the gas source device is an ozone generator, and a washing liquid in the gas washing device is ethanol. Ozone with strong oxidizing property is used for carrying out secondary oxidation on the Os element in a decomposition liquid, and effective separation of the Re element and the Os element is realized under an ozone carrier band. Comparing with an air carrier band, under the same condition, the ozone carrier band has the advantages that the collection time can be shortened, the acidity of an OsO4 absorption liquid is reduced, the measurement signal of the Os element is improved by 1.2-10 times, the accuracy of dating analysis of the Re-Os isotope system is improved favorably, and the device is particularly suitable for treating sulfide mineral samples with theOs element content of 100 ppt or below.
Owner:INST OF GEOLOGY & GEOPHYSICS CHINESE ACAD OF SCI
Energy conversion demonstration device for teaching experiment
InactiveCN105931539AReduce the risk of burstingImprove absorption and utilizationEducational modelsImpellerWater vapor
The invention discloses an energy conversion demonstration device for teaching experiments. The energy conversion demonstration device comprises a support, an alcohol burner, a boiler, an impeller and a syringe needle, wherein the alcohol burner is placed on the support, the boiler is installed on the support and positioned above the alcohol burner, a water filling port and an air outlet pipe are arranged in the boiler, the air outlet pipe is connected with the syringe needle through an air guiding tube, the impeller is installed on the support and driven to rotate by the steam ejected by the syringe needle. A test tube is replaced by a boiler, which reduces the cracking danger of the test tube. After the water boils in the boiler, the impeller can rotate continuously through the high-pressure water vapor. The experiment phenomenon lasts long, and is convenient for the student to observe. The use of the boiler improves heat absorption efficiency. The energy conversion demonstration device is simple in structure and convenient to operate.
Owner:覃文峰
Anti-dryout condensing device for detecting metal corrosivity
ActiveCN107907477AImprove stabilityIncrease contact areaWeather/light/corrosion resistanceSimultaneous control of multiple variablesMicrocomputer controlCooling pipe
The invention discloses an anti-dryout condensing device for detecting metal corrosivity. The device comprises a cooling box, wherein a control panel internally provided with a single chip microcomputer control unit is arranged on the upper end surface of the cooling box; an insert hole is formed in the center of the upper surface of the cooling box; the lower end of a condenser is inserted into the insert hole; a guide pipe is arranged in the cooling box; the guide pipe is communicated to the upper end and the side wall of the cooling box separately; a positioning seat is arranged at the bottom of the condenser, the upper end of the positioning seat is an indent surface, a drainage pipe is arranged at the upper end of the condenser, the drainage pipe is communicated to the condenser, andthe lower end of the condenser is communicated to a water outlet pipe; a water inlet pipe is fixedly connected to a water inlet of a water suction pump and the water outlet pipe is fixedly connected to the water outlet of the water suction pump; an electromagnetic valve is arranged at the connection part of the water inlet pipe and the guide pipe; a waterproof temperature sensor is arranged on theinner wall of the drainage pipe; the device comprises a cooling pipe, a return pipe is arranged in the cooling pipe, and the lower end of the cooling pipe is inserted into a hole of a test tube. A circular cooling mechanism is high in cooling speed, high in degree of automation and stable in structure.
Owner:JIANGSU SCIENCE TEST TECHNOLOGY SERVICE CO LTD
Control method, device and equipment for NOx sensor
ActiveCN114458432AReduced risk of burstingDistinguish between parking statusInternal combustion piston enginesExhaust apparatusThermodynamicsLow speed
The invention provides a control method, device and equipment for a NOx sensor, and the method comprises the steps that when the NOx sensor is in a running state, the current state of an automobile is collected, and the current state comprises engine running data and the exhaust temperature of the current NOx sensor mounting position; judging whether the automobile is in a low-speed wading state or not according to the current state of the automobile; and if the automobile is in the low-speed wading state, the NOx sensor is closed, and otherwise, the running state of the NOx sensor is kept. According to the method provided by the invention, the risk that the NOx sensor bursts under the condition that the automobile wades into water at a low speed can be effectively reduced.
Owner:WEICHAI POWER CO LTD
Air curtain protection device and protection method for laser cleaning
ActiveCN105478416BPrevent proliferationProtect healthCleaning processes and apparatusEngineeringIrradiation
The invention provides an air curtain protection device for laser cleaning and a protection method and can effectively collect pollutants in laser cleaning, guarantee cleanliness of a laser lens and prevent lens glass from being broken and damaged. The air curtain protection device for laser cleaning comprises a protection cover, a first air outlet array, a suction port and a second air outlet array, wherein the protection cover is provided with a horn-shaped inner chamber with a thin upper part and a thick lower part, the upper end of the inner chamber is in sleeve joint with the laser cleaning lens, and an opening is formed in the lower end of the inner chamber; the first air outlet array is formed in the side wall of the inner chamber, and protection space surrounding the laser lens is formed by compressed air exhausted by the first air outlet array and side walls; the suction port is formed sideways below the protection cover; the second air outlet array is formed in the peripheral edge of the lower end of the inner chamber, compressed air exhausted by the second air outlet array surrounds a laser irradiation area on the surface of a cleaned workpiece, and projection of air flow at each air outlet of the second air outlet array on the horizontal plane points to the suction port.
Owner:山西玉华再制造科技有限公司 +2
Intelligent water meter with anti-freezing device
InactiveCN112539795AReduced risk of burstingAntifreezeVolumetric apparatus damage preventionWater storageSmart water
The invention discloses an intelligent water meter with the anti-freezing device, which comprises a water meter body, a water meter dial plate and a heating assembly, wherein the water meter body is provided with a water inlet pipeline and a water outlet pipeline, a protruding part is arranged at the bottom of the water meter dial plate, and drainage holes are formed in the two sides of the protruding part; the heating assembly is installed in the water meter body, the heating assembly is communicated with the drainage hole, water is stored in the heating assembly and heated, and the heating assembly is connected with the water inlet pipeline and the water outlet pipeline through the heat conduction wires to transfer heat. Through changing the structure of the dial plate, inner accumulatedwater can be discharged, the risk that the water meter bursts due to water accumulation is directly reduced, thedischarged water is received and utilized by the heating assembly, heat is provided forthe interior of the water meter body through the heating assembly, freezing prevention is achieved, freezing prevention is completed in the water meter through the whole structure, components are few, and the structure is simple and practical.
Owner:江苏禹高物联科技有限公司
Double single-ended pumped double-rod cascaded solid-state laser
ActiveCN103390854BReduced risk of burstingImprove light extraction efficiencyOptical resonator shape and constructionActive medium shape and constructionLens effectSolid-state laser
The invention discloses a double single-ended pumped two-rod series connection solid state laser. The double single-ended pumped two-rod series connection solid state laser comprises a first laser crystal, a first semiconductor laser pump source, a first pump light recycling device, a first thermal compensation negative lens, a second laser crystal, a second semiconductor laser pump source, a second pump light recycling device and a second thermal compensation negative lens; the first semiconductor laser pump source and the first pump light recycling device are formed into an excitation device of the first laser crystal; the second semiconductor laser pump source and the second pump light recycling device are formed into an excitation device of the second laser crystal. The double single-ended pumped two-rod series connection solid state laser has the advantages of improving the luminous efficiency of the laser due to the fact that pump light through the laser crystals is recycled through the pump light recycling devices; further improving the output power and stability of the laser due to the fact that compensation is performed on the thermal lens effect of the laser crystals through the thermal compensation negative lenses; achieving high-efficiency and high-output-power stable operation of the solid state laser.
Owner:ZHEJIANG JIATAI LASER SCI & TECH CO LTD
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