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314results about How to "No risk of leakage" patented technology

Method and device for measuring accumulated liquid of natural gas pipeline

The invention discloses a method and a device for measuring accumulated liquid of a natural gas pipeline. The method comprises the following steps of: vertically transmitting high-frequency ultrasonic wave into the pipeline by an ultrasonic probe coupled to the outer wall of the measured pipeline, wherein the energy of reflection echo has great difference due to different properties of gas and liquid media; judging that the pipe inner wall is contacted with gas or liquid at the position of the probe according to the characteristic of echo received by the ultrasonic probe and reflected by the pipe inner wall; gradually adjusting the measurement position of the ultrasonic probe on the pipe outer wall along the circumferential direction; and recording a circumferential angle of the ultrasonic probe by a circumferential angle ruler when the echo has mutation, and further calculating the height of the accumulated liquid. The method is a non-intrusive accumulated liquid measurement method, does not change the structure of the conventional pipeline, has no medium leakage risk, does not affect the operation such as cleaning the pipeline and the like, meanwhile is not affected by the composition of gas and liquid phase media in the pipeline and parameters such as temperature, pressure and the like, overcomes the defect that the conventional ultrasonic technology needs complex sound velocity correction, and is particularly suitable for measuring the accumulated liquid inside the pipeline for conveying corrosive and toxic media.
Owner:SINOPEC ZHONGYUAN PETROLEUM ENG DESIGN

Electronic cigarette

InactiveCN106108121ASolve the problem of dry burningSolve the problem of leakageRespiratorsMedical devicesElectricityEngineering
The invention discloses an electronic cigarette. The electronic cigarette comprises an atomization device and a liquid storage device, wherein the atomization device comprises an atomization cavity; the electronic cigarette further comprises a control unit and a drive mechanism, wherein the control unit controls the liquid inlet of the electronic cigarette, the liquid storage device comprises a liquid inlet pipe and a liquid storage cavity, the first end of the liquid inlet pipe communicates with the atomization cavity, the second end of the liquid inlet pipe communicates with the liquid storage cavity, and the control unit and the drive mechanism are electrically connected with each other, and linkage control is adopted; when the control unit controls the liquid inlet of the electronic cigarette, the control unit controls the drive mechanism to drive tobacco juice in the liquid storage cavity to enter the atomization cavity through the liquid inlet pipe. With the adoption of the technical scheme, the electronic cigarette has the advantages that the condition that an appropriate amount of tobacco juice is in the atomization cavity is guaranteed, so that the burning phenomenon can be avoided, and meanwhile, the risk of liquid leakage caused by the fact that too much tobacco juice soaking a liquid guide element can not be consumed in time in the prior art can be also avoided.
Owner:JOYETECH EURO HLDG

Integrated small reactor

ActiveCN105280257AEliminate large breach accidentsEliminate bouncing accidentsNuclear energy generationContainmentNuclear engineeringPressurized water reactor
The invention belongs to the pressurized water reactor overall structure design technology, and specifically discloses an integrated small reactor. The integrated small reactor comprises a pressure vessel, and a reactor core, a compressing assembly, a control rod assembly, a guide assembly, a control rod driving mechanism and a once-through steam generator which are arranged inside the pressure vessel, and further comprises a main pump directly connected with a cylindrical body of the pressure vessel, wherein the reactor core comprises a reactor core barrel and a fuel assembly; the compressing assembly and the control rod assembly are arranged inside the reactor core barrel; and the pressure vessel is directly connected with the main pump, the main pump is horizontally installed, and an inlet thereof is provided with a flow distribution device. Heating equipment is arranged on a top cover of the pressure vessel, a coolant inside the pressure vessel is subjected to pressure control directly through temperature adjustment, that is, main equipment such as the steam generator, voltage-stabilizing equipment and the control rod driving mechanism are arranged inside the pressure vessel of the reactor at the same time. According to the integrated small reactor, the external loop pipeline is omitted, large break accidents are eliminated, and the structure is compact; and the control rod driving mechanism is arranged internally, the rod ejection accident is eliminated, and the fixation safety is greatly improved.
Owner:NUCLEAR POWER INSTITUTE OF CHINA

Mining explosion-proof all-insulation dry type transformer with amorphous alloy iron core for mobile transformer substation

A mining explosion-proof all-insulation dry type transformer with an amorphous alloy iron core for a mobile transformer substation comprises an integral winding, the iron core, an upper clamp, a lower clamp and a shell, wherein the integral winding includes low-voltage coils and high-voltage coils. The mining explosion-proof all-insulation dry type transformer is characterized in that insulation layers are arranged among layers of the low-voltage coils, the high-voltage coils are arranged on the outer layer of the low-voltage coils, each insulation layer is arranged between each two adjacent layers of the high-voltage coils, an outer insulation layer covers the high-voltage coil, and the integral winding has the square section. The iron core is the amorphous alloy iron core, and an assembling lap joint of the iron core is arranged on the lower portion. The upper clamp and the lower clamp are non-metallic parts cast by epoxy resin and reinforced by filled glass fibers, the U-shaped sections of the upper clamp and the lower clamp cap the upper yoke and the lower yoke to press the upper end face and the lower end face of the winding and are fastened by pull bolts, and the pull bolts are symmetrically mounted on the low-voltage side and the high-voltage side to fasten the upper clamp and the lower clamp. The mining explosion-proof all-insulation dry type transformer has the advantages of long service life, low loss, low noise, no maintenance or pollution, high reliability, flame retardance, fire resistance, recyclability after being used up and the like.
Owner:沈阳幸森电气设备有限公司

Anti-biological blocking device for drip irrigation system

The invention relates to an anti-biological clogging device for a drip-irrigation system. The drip-irrigation system is started, an air intake brake valve is opened, an ozone generator is started, and compressed water which comes from the head part of the drip-irrigation system is sprayed at high speed from a jet orifice of a jet nozzle so as to form the negative pressure in a gas injection cavity; and under the action of the negative pressure, the ozone generator ensures that ozone generated through air ionization enters the gas injection cavity through the air intake brake valve, a check valve and an air inlet pipe along with the air filtered by an air filter, and enters an oscillating cavity for vortex oscillation, stirring and aerification along with the high-speed water flow sprayed by the jet nozzle so as to form 'ozone water' of which gas and liquid are distributed uniformly, and the 'ozone water' enters the drip-irrigation system to kill microorganisms in flow channels and cansynchronously inhibit crop root systems from growing toward the direction of a water outlet of a drip irrigation emitter in an underground drip-irrigation system, so that the aim of biological clogging resistance of the drip-irrigation system is fulfilled. Compared with a method of injecting a chemical agent into irrigation water, the invention has the advantages that: the residue of harmful substances which can pollute the environment is not produced, and the risk of using dangerous chemical agents is avoided.
Owner:FARMLAND IRRIGATION RES INST CHINESE ACAD OF AGRI SCI

Epoxy pouring type solid insulation switch with three-cabin

The present invention provides an epoxy pouring type solid insulation switch with three-cabin which is composed of three switch bodies having same structure. The switch body comprises an isolation cabin, a vacuum explosion-chamber cabin and a fuse cabin; a bus contact is arranged on the top of the isolation switch, the bus contact fixedly connects with an isolation contact through a master row; agrounding contact and the isolation contact are arranged on two ends of the isolation switch, a middle contact is in the middle; three contacts have same contact bases, sliding guide holes are arranged on the centre of the bases; the front connects with an insulation nut, the rear end connects with an operating mechanism. a through hole is arranged on the centre of the isolation moving contact andfixedly connects with the insulation nut, the insulation nut is sheathed on the nut and rotately connects with the nut; the vacuum explosion-chamber cabin and the fuse cabin are arranged below the isolation cabin respectively. The switch provided by the invention has advantages of reasonable design, higher electric safety performance, little volume, light weight, stable performance, reliable motion, stronger practicability and advancement. The switch provides assurance for reliability of electric supply, which is a precondition condition for reducing user investment.
Owner:SHENYANG HAOCHENG ELECTRICAL SCI & TECH

Hemodialyzer with polypropylene material outer shell and manufacturing method thereof

The invention discloses a hemodialyzer with a polypropylene material outer shell and a manufacturing method thereof, and relates to the field of hemodialysis. The hemodialyzer comprises an outer shell body and membrane fibers. The outer shell body comprises an end cover and a tubular body, and the outer shell body is made of polypropylene. A welding bulge loop which is matched with the end face of the body is arranged at the position, opposite to the end face of the tubular body, of the end cover. The welding bulge loop of the end cover and the tubular body are welded together through ultrasonic waves. The manufacturing method of the hemodialyzer with the polypropylene material outer shell includes the steps that injection molding, pre-assembling, sintering, centrifugal can sealing and cropping of the end cover and the tubular body are conducted, the end cover is fixedly mounted on the tubular body, and leak hunting, drying and assembling are carried out on a dust cap. Plasma activating treatment is conducted on the end cover and the tubular body. The outer shell body is not poisonous, using is safe, the cost of raw materials is low, the molding cycle is short, and the preparation efficiency is high. The manufacturing method saves time and labor, improves efficiency, lowers manufacturing cost, and prevents a sealing ring from releasing substances harmful to the health of people when the end cover and the tubular body are in ultrasonic welding.
Owner:WEIHAI WEIGAO BLOOD PURIFICATION PROD

Deep-sea carbon storage and power generation system

The invention discloses a deep-sea carbon storage and power generation system. The deep-sea carbon storage and power generation system comprises a waste heat turbine, a waste gas heat exchanger, a gasstripping device, a waste gas treatment device, a supercritical carbon dioxide compressor, wave energy power generation equipment, a geothermal heat exchanger, a supercritical carbon dioxide turbineand a seabed cooler. According to the deep-sea carbon storage and power generation system disclosed by the invention, waste heat power generation and carbon dioxide stripping are performed on power plant waste gas, and the stripped carbon dioxide is applied to a seabed geothermal Brayton cycle, and is finally stored in deep-sea storage holes. The system is compact in structure, is small in size and is high in efficiency. Rich seabed geothermal energy is used as a heat source, is free of pollution and is low in cost; carbon dioxide is stored in the form of carbon dioxide hydrate, is relativelylow in cost, is environmentally-friendly and is good in leakproofness; and a dried oilfield, gas field or natural hole with a good storage cover in a seabed geologic body is utilized as a carbon storage site, so that the storage effect is good, and later-period maintaining and monitoring cost is reduced, and therefore, the system has a wide application prospect.
Owner:XI AN JIAOTONG UNIV

Gasoline direct injection high-pressure fuel distribution pipe manufacturing method

The invention relates to a gasoline direct injection high-pressure fuel distribution pipe manufacturing method. The method includes the specific steps that 1, hot forging forming is conducted on a main rail blank; 2, the plane and holes are machined in mounting supports; 3, the planes of the two ends of the main rail blank are machined, the forged surface is removed, the two ends are made to be circular planes, and the planes are perpendicular to the center line of a main pipe; 4, deep hole machining is conducted, 5, the sensor corresponding side on the main rail blank is machined, 6, the plug corresponding side on the main rail blank is machined; 7, an oil injection connector on the main rail blank is machined; 8, oil spray device bases are machined; 9, cleaning is conducted; 10, a plug is mounted; 11, a sensor is arranged; 12, a product obtained after sealing detection is conducted is sealed. The product obtained through the method is good in sealing performance, relatively small in part number, free of risk of deformation and leakage due to rack of fusion, relatively simple in process and free of brazing process and the like, energy sources are saved, and the potential safety hazards existing in machining are reduced.
Owner:SHANGHAI USUI ENGINE PARTS

Solid-solid phase change material and preparation method thereof

The invention relates to a solid-solid phase change material and a preparation method thereof, and belongs to the field of phase change energy storage materials. The solid-solid phase change materialcomprises a component A and a component B, wherein the addition amount of the component A is 50-97% and the addition amount of the component B is 3-50% according to the percentage of the total mass ofthe raw materials, wherein the component A is a phase change material component, and comprises the following components in percentage by mass: 0-30% of an inorganic salt, 41-96.8% of water, 1-8% of fiber, 0.1-2% of a dispersant, 0.5-5% of a nucleating agent, 1-8% of a thickening agent and 0.5-6% of a heat conducting medium, wherein the component B is a curing component and comprises the followingcomponents in percentage by mass: 3-25% of isocyanate, 75-97% of hydrophilic polyether polyol and 20 ppm-200 ppm of A retarder accounting for the total mass of the component B. Compared with the existing water-based phase change material, the solid-solid phase change material provided by the invention not only furthest retains the characteristics of high phase change latent heat and low cost of the water-based phase change material, but also has no leakage risk and better heat conductivity.
Owner:SHANDONG ANLENG NEW MATERIAL TECH CO LTD

Marine exhaust gas after-treatment method

The invention discloses a marine exhaust gas after-treatment method. Exhaust gas generated by ships is introduced into a desulfurization and denitrification unified tower, absorbing desulfurization is conducted on the lower portion of the tower by means of sodium hydroxide solution, complexing denitrification can be achieved with complexing liquid on the upper portion of the tower, and exhaust gas up to standard after desulfurization and denitrification treatment is heated and then discharged out of a chimney; the complexing liquid after NO complexing is heated so that NO can be extracted; No extracted through heating is oxidized to be NO2 through catalytic oxidation or plasma oxidization, and then absorbed by sodium hydroxide solution or sodium sulfite solution. When ship usage meets the requirement for low-sulfur oil according to IMO convention, desulfurization is not needed, sodium alkali desulfurization section spraying liquid is changed to be seawater, and exhaust gas is cooled to prevent the temperature of a tower body from becoming too high. When ships sail in an area which does not need denitrification, a denitrification section complexing liquid sprinkling system is closed, and exhaust gas is heated and then directly discharged out of the chimney. In this way, separation and enrichment of NOX from exhaust gas is achieved, the concentration of NOx is improved, and the conversion rate of catalytic oxidation and plasma oxidization is increased.
Owner:SHANGHAI HENGYUAN MARINE EQUIP
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