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Alternate combined wetland system and method for efficiently removing nitrogen and phosphorus in urban wastewater
ActiveCN101921042AEfficient removal of total nitrogenEfficient removalMultistage water/sewage treatmentEnergy based wastewater treatmentStructural unitEcological environment
The invention discloses an alternate combined wetland system and a method for efficiently removing nitrogen and phosphorus in urban wastewater, belonging to the field of wastewater treatment. The system comprises a water taking system which is characterized by sequentially distributing four artificial wetland structural units of vertical composite flow, surface flow, underflow and an ecological pond. The water taking system enables the urban wastewater to uniformly flow into the artificial wetland of vertical composite flow; the entering domestic wastewater is uniformly distributed in a shape like the Chinese character 'wang(surname)', the discharged water enters the front end of the wetland structural unit of surface flow, the back end collects the water from the surfaces of perforated pipes, and then, the water is discharged out of the system; the discharged water uniformly flows into the artificial wetland unit of underflow from water inlet square holes through a water distributing tank; and then, after the wastewater flows into a water collecting tank, the wastewater is conveyed to the ecological pond. The system of the invention enables the cumulative mean removing rates of COD, TN, ammonia nitrogen and TP to respectively reach about 55.6%, 84.0%, 76.7% and 84.4%. The system improves the quality of the aquatic environment and the aquatic ecological environment, beautifies the landscape, and has good environmental economic benefit.
Owner:NANJING UNIV
Dual camera surveillance and control system
InactiveCN1615640AEnhanced low pressure operationReduce energy consumptionTelevision system detailsColor television detailsAutomatic controlEnergy consumption
The invention provides a dual camera monitoring and control system. The system includes a high sensitivity monochrome camera with enhanced infrared response, an array of infrared illuminators for zero ambient light monitoring, and a color camera that does not require enhancement in the infrared spectrum. The system also includes ambient light intensity perception, video signal exchange technology and energy conversion circuits. The system combines optimal monochrome imaging in low-light or no-light conditions with optimal color tinted imaging in high ambient light conditions, both for high-quality image clarity. The dual-camera feature of the system is evident to the user due to the integrated automated control of the system, which also reduces energy consumption, thus making the system suitable for wireless, remote, self-sufficient systems that operate from surrounding The environment gains energy.
Owner:J·M·杰克·金
Alkalescent water-quality treatment and treating system for double-internal water-cooled generator
InactiveCN1896009AReduce corrosion rateInhibit corrosionDispersed particle separationWater/sewage treatment by ion-exchangeCorrosionGenerating unit
Cold water alkalescent water-quality treatment and treating system for dual-water internal cooling generator are disclosed. By-pass water treating system is installed on cold water main circulation circuit in dual-water internal cooling generator, hardness, copper, iron, corrosive product and granular purity are trapped in by-pass system utilizing cationic exchanger, cold water conductivity is controlled by EDI unit to improve pH value and regulate alkalescence. It has better internal cold water treating ability and can inhibit corrosion.
Owner:ELECTRIC POWER RES INST STATE GRID JIANGXI ELECTRIC POWER CO
Inner-cooling water microcirculation slowly-releasing regulation and control method and its monitoring system
InactiveCN1354546AThe corrosion potential difference is reducedReduce corrosion rateControlling ratio of multiple fluid flowsChemical variable controlCopper conductorNegative type
The invention discloses a method for slow released regulating and controlling internal cooling type of water microcirculation in large electrical generator as well as monitoring system. When PH value of internal cooling water in circulation system and electric conductivity are less than a certain value, the inlet and outlet valves of small mixing bed are started, making part of internal cooling water pass through a bypass circulation system go along a microcirculation. Thus alkaline matter in microscale slow released is carried in certain range. When PH value of internal cooling water in circulation system and electric conductivity reach a certain value, the inlet and outlet valves are closed. When said values are in certain value, the drainage valve and water compensation valve of demineralized water is opened till electric conductivity of internal cooling water is less than a certain value. The alkaline matter includes negative type of resin and positve type of resin. The monitoring system is composed of water quality monitor and control system, bypass circulation processing control system and water compensation pollution discharge controlling system. The invention can effectively prevent water quality of internal cooling water from deterioration, restrain copper conductor from corrupt. It can be used in large type of generator group in thermal power stations, nuclear powre station and hydroelectric power station.
Owner:WUHAN UNIV
MnO2-TiO2 carbon nanotube-porous inorganic ceramic membrane low-temperature catalytic denitrification self-cleaning material and its preparation method
ActiveCN102728346AEvenly dispersedImprove conversion rateCatalyst protectionDispersed particle separationFoaming agentCarbon nanotube
A MnO2-TiO2 carbon nanotube-porous inorganic ceramic membrane low-temperature catalytic denitrification self-cleaning material and its preparation method belong to the field of low-temperature catalytic denitrification. A porous inorganic ceramic membrane is used as a carrier; a compound of MnO2, TiO2 and carbon nanotube is loaded on the surface of the carrier so as to obtain a catalyst; and a fluorocarbon resin material is loaded on the surface of the catalyst, wherein the mass percents of the fluorocarbon resin material and the catalyst itself are respectively 30% and 70%; in the catalyst, the mass percent of the porous inorganic ceramic membrane is 50-80%, and the mass percent of the compound of MnO2, TiO2 and graphene is 20-50%. As coal ash in a thermal power plant is used as a raw material and charcoal is used as a foaming agent to prepare the porous inorganic ceramic membrane, the price is low; as the porous inorganic ceramic membrane has a porous structure and large specific surface area, more active centers can be provided for catalytic reaction; the carbon nanotube has large specific surface area, high chemical inertness and tunnel conductivity of large delocalized pi bond, catalytic performance of the material at low temperature can be raised; and the fluorocarbon resin compound on the surface of the catalyst has a self-cleaning function.
Owner:SHANXI PULI ENVIRONMENT ENG CO LTD
Double-path connection M2M (machine-to-machine) system, terminal and connection method thereof
InactiveCN102368873AImplement redundant backupImprove reliabilityNetwork topologiesConnection managementThe InternetEngineering
The invention discloses a double-path connection M2M (machine-to-machine) system, which comprises an M2M terminal, an M2M platform and an application system, wherein the M2M terminal is respectively connected with the M2M platform and the application system, and the two paths of connection are based on different protocols; one path of connection realizes the data interaction between the M2M terminal and the M2M platform, and then the M2M platform and the application system establish a data transmission channel through the internet; and the other path of connection realizes the direct data interaction between the M2M terminal and the application system. The invention also discloses a double-path connection M2M terminal and a connection method thereof. The M2M system and the terminal disclosed by the invention have the characteristics of double paths of connection, the reliability of wireless communication is enhanced, and redundance backup and timely updating of acquired information are realized; and offline reconnection measures ensure connection online to the maximum extent, and the occurrence of a terminal incontrollable state is reduced.
Owner:SOUTHEAST UNIV
Vacuum motor
InactiveCN104377890AReduce the temperatureLong-term effective operationCooling/ventillation arrangementSupports/enclosures/casingsControl theoryCooling fluid
The invention relates to the field of electromechanical technology, in particular to a vacuum motor. The vacuum motor is provided with a water cooling and vibrating sensor interface and can be applied in the vacuum and radiation environment. The vacuum motor comprises a motor body, a motor shell and a rear end cover. The motor body is arranged inside an inner cavity of the motor shell. The motor shell is provided with a water inlet pipe connector and a water outlet pipe connector. Cooling liquid enters the inner cavity of the motor shell through the water inlet pipe connector, cools the motor body and flows out of the water outlet pipe connector. The rear end cover is in sealing connection with the rear end of the motor shell. The front end face of the motor shell is a flat and smooth flange end face. During installation, vacuum combination between the vacuum motor and other sealing cavities can be achieved only by sealing the flange end face through an O-shaped ring; in addition, the temperature of the vacuum motor can be effectively lowered through circulation of the cooling liquid, so that it is ensured that the vacuum motor can effectively run for a long time, and the service life of the vacuum motor is prolonged.
Owner:DONGGUAN NEUTRON SCI CENT
High-temperature resistance plastics centrifugal pump
ActiveCN102889235AAvoid Accuracy ImpactCompact and reasonable structurePump componentsPump installationsCompression moldingEngineering
The invention relates to a high-temperature resistance plastics centrifugal pump, which comprises a pump body, an impeller, a pump cover, a motor, a thermostability mechanical seal component and other attached components, wherein the thermostability mechanical seal component is composed of a static ring, a moving ring, a spring seat, a static ring gland, a cooling water jacket and an acid-blocking piece; the spring seat is fixed on an impeller shaft; the outer surface of the spring seat is directly taken as a seal rotating shaft; the spring seat is provided with a spring and an O-shaped seal ring which is used for separating corrosive medium from metal pieces; the cooling water jacket is provided with a cooling water nozzle and a framework oil seal; the framework is matched with the spring seat to form the cooling water seal; the pump body, impeller and pump cover form a flow passage component of the pump, are respectively made of thermostability corrosion-resisting plastic through compression molding and comprise all-plastic and pump cover structure forms. The pump has the characteristics of being reasonable and compact in structure, reliable to mount and use, can avoid the influence on the precision of mechanical sealing by the deformation of plastics due to heating, greatly prolong the service life, can resist high temperature and effectively operate in strong corrosion environment for a long time and the like.
Owner:杭州新安江工业泵有限公司
Line repair device
PendingCN110504646ASecure connectionUnified operating standardsApparatus for repairing insulation/armouring cablesApparatus for joining/termination cablesEngineeringInsulation layer
The invention relates to the field of cable maintenance, in particular to a line repair device. The line repair device includes a repair shell; a line connector is arranged in the repair shell; the line connector includes a middle connecting piece and two lock nuts; the two lock nuts are connected to both ends of the middle connecting piece in a threaded manner; each lock nut is provided with a tapered elastic sleeve; the entrance of a wire insertion hole is a corresponding tapered expansion structure; the upper surface of the repair shell is provided with a glue injection hole, and the liquidrepair glue can be injected into the repair shell through the glue injection hole; and the repair glue and repair shell together form a line repair insulation layer after the repair glue solidifies.The beneficial effects of the line repair device are as follows: the wire connection at the cable connection location is firm and reliable, and has a large current flow area; and the repair shell andthe solidified repair glue together form the repair insulation layer at the cable connection location; therefore, the water and moisture resistance is good, the strength is high and not easy to break,the cable can run effectively for a long time after connecting, and the service life of the cable is prolonged.
Owner:GUANGZHOU PANYU CABLE WORKS
Compound deep purification ecological floating bed with external carbon source and purification treatment method thereof
ActiveCN103204610AReduce flow rateFavorable for attachment growthMultistage water/sewage treatmentPolystyreneEngineering
The invention relates to a compound deep purification ecological floating bed with an external carbon source and a purification treatment method thereof. The purification ecological floating bed structurally comprises a floating bed frame, an A bamboo raft, a geogrid, a polystyrene board, a plant, a nylon cable tie, a spherical framework, a gauze element, a starch / PHB (Poly-beta-hydroxybutyrate) blend, a fixing rod, a cuboid-shaped gabion and a B bamboo draft, wherein the A bamboo draft and the B bamboo draft are fixed onto the frame through iron wires; the plant 5 is fixed onto the polystyrene board; the polystyrene board is wrapped with the geogrid; the geogrid is fixed onto the frame through the nylon cable tie; a suspension rope is tied to the lower part of the geogrid; the starch / PHB blend is wrapped with the gauze element; the starch / PHB wrapped with the gauze element is placed into the framework; the framework is fixed onto the fixing rod; and the cuboid-shaped gabion is fixed onto the frame through iron wires. The compound deep purification ecological floating bed with the external carbon source has the advantages that the materials are easily available, cost is low, purification efficiency is high, effects are obvious, and management is convenient.
Owner:HOHAI UNIV
Primary neutron source part for starting nuclear reactor
InactiveCN102243900AImprove securitySimple structureNuclear energy generationNeutron sourcesNuclear reactor coreEmissivity
The invention discloses a primary neutron source part for starting a nuclear reactor. The primary neutron source part comprises a cladding tube, a neutron source, cushion blocks, an upper end plug and a lower end plug, wherein the neutron source is arranged in the cladding tube; two ends of the cladding tube are respectively sealed by the upper end plug and the lower end plug; the neutron source is a Cf-252 neutron source of which neutron emission rate is 1.0*10<8> to 1.0*10<10> n / s; and a compression cushion block and a supporting cushion block are arranged on two sides of the neutron source. The primary neutron source part for starting the nuclear reactor provided by the invention is simple in structure, safe, reliable and easy to process.
Owner:CHINA INSTITUTE OF ATOMIC ENERGY
On-line pretreatment device of chromatographic gas sample and application method thereof
The invention provides an on-line pretreatment device of a chromatographic gas sample, and the device is mainly used for on-line pretreatment of gas samples of an ethylene cracking furnace. The pretreatment device is a box structure, and is mounted between an outlet of an online analysis sampler of the ethylene cracking furnace and an on-line chromatogram. The on-line pretreatment device is mainly composed of a buffer sedimentation tank, a visual liquid-discharge tank, a gas filter, a pressure regulating valve, a cleaning transfer valve, a steam system and insulating parts. Inner surfaces of the connecting pipelines use ultramicro nanostructures with a low surface tension. The chromatographic gas sample can be treated to remove water, solid impurities and heavy hydrocarbon droplets, and outputted to the on-line chromatogram with a stable flow.
Owner:CHINA PETROLEUM & CHEM CORP +1
Dual camera surveillance and control system
InactiveCN1279751CLong-term effective operationEnhance the imageTelevision system detailsColor television detailsAutomatic controlControl system
The invention provides a dual camera monitoring and control system. The system includes a high sensitivity monochrome camera with enhanced infrared response, an array of infrared illuminators for zero ambient light monitoring, and a color camera that does not require enhancement in the infrared spectrum. The system also includes ambient light intensity perception, video signal exchange technology and energy conversion circuits. The system combines optimal monochrome imaging in low-light or no-light conditions with optimal color tinted imaging in high ambient light conditions, both for high-quality image clarity. The dual-camera feature of the system is evident to the user due to the integrated automated control of the system, which also reduces energy consumption, thus making the system suitable for wireless, remote, self-sufficient systems that operate from surrounding The environment gains energy.
Owner:J·M·杰克·金
Electrochemical water treatment device and method utilizing same to treat water
ActiveCN105923849APurify thoroughlyEasy to handleWater/sewage treatment by centrifugal separationSpecific water treatment objectivesCycloneFiltration
The invention provides an electrochemical water treatment device which comprises a reaction device, a tangential water inlet formed in the side wall of the upper portion of the reaction device, a water outlet formed in the lower end of the bottom, a drain outlet formed in the side wall of the bottom, a primary coarse filtration screen arranged at the top of the center of the inside of the reaction device, an anode arranged below the primary coarse filtration screen, a secondary fine filtration screen, a cathode, a power supply and a vent valve. The invention further provides a method utilizing the device to treat water. Compared with the prior art, the synergic coupling effect of all processes is achieved within the same reaction device by adopting an ingenious process concept, so that the processes are complementary and are promoted mutually to overcome the shortcomings existing when the processes respectively play the effects, the treatment effect is remarkably improved, the energy consumption is reduced, a reactor structure is optimized, and the occupied area is reduced. The method utilizing the device to treat water is simple in process, high in treating efficiency and capable of performing effective, economical, environmentally friendly and integrated water treatment through hydraulic cyclone separation, two-stage filter screen based filtration and electrochemical oxidation and reduction.
Owner:HOHAI UNIV
Cable repair device and cable repair method
ActiveCN107275991BLong-term effective operationExtended service lifeApparatus for repairing insulation/armouring cablesStructural engineeringMoisture resistance
Owner:GUANGZHOU PANYU CABLE WORKS
Sewage water source heat pump system
InactiveCN101413731AAvoid cloggingPrevent scalingHeat pumpsCompression machines with reversible cycleWater source heat pumpEngineering
The invention relates to a sewage source heat pump system, consisting of a compressor, a condenser, an evaporator, a reversing valve and an expansion valve; wherein, the condenser or the evaporator is designed into a sewage source heat exchanger; the sewage source heat exchanger comprises a sleeve and a heat exchange tube which penetrates the sleeve, a connector joint and a screw cover are arranged between the two ends of the sleeve and the heat exchange tube, and the inlet and the outlet interfaces of a heating medium are opened on the pipe wall of the sleeve; the two ends of the heat exchange tube extending out of the sleeve are provided with a three-way joint and an end cover, and a sewage inlet interface and a sewage outlet interface are arranged along the radial direction of the three-way joint; the heat exchange tube is internally provided with a pitch type chain axle cleaner. In addition, the system is additionally provided with an auxiliary evaporator of the compressor, a filter purifying device and a dosing device. The condenser or the evaporator of the invention adopts the sewage source heat exchanger with the same structure, therefore, the system can run effectively for a long time and the service life of the sewage source heat pump system is prolonged; the added auxiliary evaporator can ensure the system to work normally under overheating or overcooling environmental temperature.
Owner:淮安英硕能源设备有限公司
Underground pipe drainage equipment capable of treating water-logging and stain
ActiveCN109811866AAvoid cloggingImprove work efficiencyFatty/oily/floating substances removal devicesSewerage structuresWater storageEngineering
The invention discloses underground pipe drainage equipment capable of treating water-logging and stain, and belongs to the technical field of water conservancy projects. The equipment comprises a water-logging removing device and a stain reducing pipe; the water-logging removing device comprises a drainage unit, a flow guide pipe, a water outlet unit and a water storage device; the drainage unitcomprises a plurality of drainage pieces and a drainage cylinder; the drainage pieces comprise first drainage pieces and second drainage pieces; a first water inlet is formed in each first drainage piece; each second drainage piece is a drainage piece of an impermeable structure; the second drainage pieces are positioned at the top end and the bottom end of the drainage cylinder; the first drainage pieces are positioned between the second drainage pieces; second water inlets are formed in the positions, in the drainage cylinder, between every two of the first drainage pieces; the second waterinlets are communicated with the flow guide pipe; the flow guide pipe is communicated with the water outlet unit, the water storage device and the stain reducing pipe in sequence. According to the underground pipe drainage equipment capable of treating water-logging and stain, sundries in water-logging water on the ground is isolated from the drainage cylinder through the second drainage pieces; the sundries in the water-logging water are prevented from blocking the stain reducing pipe after entering the stain reducing pipe by the first drainage pieces. The work efficiency is improved, and long-term effective operation of the equipment is ensured.
Owner:CHINA INST OF WATER RESOURCES & HYDROPOWER RES
High furnace infrared thermoviewer protecting device
InactiveCN100430703CEasy exitLong-term effective operationPyrometry using electric radation detectorsHeating furnaceElectrical drive
The protective device comprises: a movable device of the imager with a probe, an electrical driven rotating device and a probe movable device; a motorized ball valve sealing device with a valve, a sealing sleeve, an auto-clamp device, and a location switch; a gas protection device with a transient sleeve and an inlet for cooling gas, and a straight plate valve cleaning device with a baffle plate valve and an observe window. This invention improves device performance.
Owner:BAOSHAN IRON & STEEL CO LTD +1
High-sensitivity water delivery pipeline leakage monitoring system and method
ActiveCN105387352ALong-term effective operationBreak through the sensitivity limit of initial conditionsPipeline systemsCouplingMonitoring system
The invention discloses a high-sensitivity water delivery pipeline leakage monitoring system and method. The system comprises a power supply module, a chaotic circuit module, a water monitoring sensor and a display module; and the power supply module, the water monitoring sensor and the display module are connected with the chaotic circuit module. The method comprises the following steps: (1) generating a chaotic system with a cross-coupling term by using the chaotic circuit module; (2) creating turbulence on the cross-coupling term of the chaotic system by using electrical signals generated by a sensor circuit module of the chaotic circuit module to cause orbital transition of chaotic attractors; and (3) monitoring leakage of a water delivery pipeline by using the water monitoring sensor, and judging conditions of leakage of the water delivery pipeline according to chaotic attractor orbits displayed by the display module. The water delivery pipeline leakage monitoring system is not limited by pipeline materials or mounting environments, and judges rapidly whether leakage exists or not according to change of the attractors; the size of a leaking part of the pipeline is recognized by a salt water monitoring technology in an assisted manner; and the high-sensitivity water delivery pipeline leakage monitoring system is simple in structure and easy to use.
Owner:NAVAL UNIV OF ENG PLA
Heat supply system for electric heating organic heat carrier
InactiveCN101586825AImprove thermal stabilityImprove antioxidant capacityLighting and heating apparatusCentral heating systemThermal energyElectricity
The invention relates to a heat supply system for an electric heating organic heat carrier, mainly comprising six parts i.e. electric heating equipment, a circulating pump, an expansion slot, a heat conducting oil filter, a heat conducting oil closed circuit pipeline system and an electric control system; the heat carrier is based on heat conducting oil, the heated heat conducting oil carries heat energy to be transferred to heat consuming equipment after being heated, and the effect of releasing the heat energy to heat the heat consuming equipment is achieved by fully heat contact of the heat conducting oil with the heat consuming equipment; and the heat conducting oil after releasing the heat energy can return to the electric heating equipment to be reheated.
Owner:常州能源设备总厂有限公司
Gear lubricant and preparation method thereof
ActiveCN101747986BAvoid wear and tearPrevent damage such as gluingLubricant compositionLow speedWear resistant
The invention discloses a gear lubricant, which is prepared from the following raw materials in parts by weight: base oil comprising 5-15 parts of esters, 30-50 parts of hydrocarbon and 30-40 parts of three-type base oil, an additive comprising 3-10 parts of an extreme pressure antiwear agent, 2-4 parts of a cleaning agent, 4-6 parts of an oxidation and corrosion inhibitor and 3-8 parts of an anti-friction agent. The esters is one or more of NP343, NP372 and P81, the hydrocarbon is one or more of PA08, PA010 and PA012, the three-type base oil is one or more of 150NN, 100N, 75N and 250N, the extreme pressure antiwear agent is one or more of T323, T321 and T306, the cleaning agent is one or more of T101, T104 and T105, the oxidation and corrosion inhibitor is one or two of T203 and T204, and the anti-friction agent is boron nitrogen compound. The invention has excellent high temperature stability, antioxidation stability, wear-resistance, corrosion resistance and rust resistance. The gear lubricant is added into various gear oil according to the proportion, the viscosity or the viscosity index of the gear oil is slightly changed or not changed, so that the wear resistant, high temperature resistant and press resistant boundary lubricating oil film is formed rapidly when an apparatus is at high speed, low speed, heavy load or impact load.
Owner:LUOHE BEIJIA BILL SCI & TECH CHEM
Efficient treatment, recycling and zero emission method and system for shale gas flowback fluid
ActiveCN112441701AEasy to separateImprove water qualityWaste water treatment from quariesSludge treatment by de-watering/drying/thickeningReverse osmosisCatalytic oxidation
The invention provides an efficient treatment, recycling and zero emission method and system for shale gas flowback fluid. The method comprises coagulating sedimentation, catalytic ozonation, an MBR method, reverse osmosis, membrane distillation, a mechanical vapor recompression (MVR) evaporator, sludge dehydration, and safe landfill or resource utilization. The system comprises a primary treatment unit, a secondary treatment unit, an advanced treatment unit, a concentrated solution treatment unit, a sludge treatment unit and an automatic control unit. All the units are arranged in one or morecontainers to form the modular and movable skid-mounted device. By means of the process, suspended solids, colloids, organic matter, salt ions and other pollutants in the shale gas flowback fluid canbe efficiently removed, the effluent quality can meet reinjection, emission and various reuse standards, and meanwhile zero emission of the whole system is achieved. The system is free of environmental pollution, capable of effectively operating for a long time, easy to maintain, small in occupied area, flexible and convenient to use, and the skid-mounted device is quite suitable for treating shale gas flowback fluid.
Owner:刘百仓
Micro-mist dust suppression method based on coal cutter cutting dust sources
ActiveCN111101938AImprove the effect of dust suppressionStrong targetingSlitting machinesThermodynamicsMechanical engineering
The invention relates to a micro-mist dust suppression method based on coal cutter cutting dust sources. Coal cutter cutting dust generation is divided into four different dust sources, and differentmist spraying modules are installed at corresponding positions of a coal cutter to conduct dust suppression on the dust sources. Mist fluid is sprayed by the mist spraying modules, and according to atomization parameters, the mist spraying amount and the dust concentration, particle size distribution, dispersion degree and dust generation amount of dust generated by different dust sources, a dustsource area is misted, so that the dust generated by coal cutter cutting is collided with mist drops of the mist fluid, coagulated and captured and settles in the initial state, and the capacity of capturing inhalable dust with the particle size of 10 micron or below is especially improved. The method fully considers a body structure, movement features and use conditions of the coal cutter, and adesigned dust suppression system has a certain anti-smashing performance and is reliable in use and convenient to maintain.
Owner:北京中矿兴宝环保科技有限公司
Tandem type mechanical seal for high-temperature high-pressure multistage pump
The invention provides a tandem type mechanical seal for a high-temperature high-pressure multistage pump. The tandem type mechanical seal comprises a primary sealing assembly, a secondary sealing assembly and a tertiary sealing assembly, wherein the primary sealing assembly and the tertiary sealing assembly are of contact type mechanical sealing structures; the secondary sealing assembly comprises a second movable ring and a second fixed ring; the second movable ring is mounted on a pump shaft; the second fixed ring is mounted on a sealing housing; a second spring is axially arranged betweenthe non-sealing surface of the second fixed ring and the sealing housing; the second spring presses the second fixed ring and the second movable ring; a groove which is distributed in the radial direction is formed in the sealing ring of the second movable ring; and the groove communicates with a first ring-shaped space. Three groups of mechanical seals are adopted, wherein contact type mechanicalseals are adopted at the two sides and non-contact type mechanical seal is adopted in the middle, so that the service life is prolonged and leakage loss is reduced.
Owner:JIANGSU UNIV
VOCs exhaust gas purifying system
InactiveCN107261838ALong-term effective operationNo lossGas treatmentDispersed particle separationAir cleaningOxidizing agent
The invention relates to the technical field of air purification, in particular to a VOCs exhaust gas purification system. The system includes VOCs waste gas purification equipment and an oxidant circulation tank; the main body of the VOCs waste gas purification equipment is a tank body, the upper part of the tank body is provided with an air outlet and an oxidant inlet, and the lower part of the tank body is provided with an air inlet and a water outlet The oxidant inlet is connected to the spray plate inside the tank body; the tank body is also provided with a support tray, and the support tray is arranged above the air inlet; the liquid outlet of the oxidant circulation tank is connected to the The oxidant inlet is connected. The equipment can be used for VOCs waste gas purification treatment, and has the advantages of low operating cost and no need for regeneration and repeated replacement.
Owner:科海思(北京)科技有限公司
Line repair equipment
PendingCN110429402APromote repairLong-term effective operationElectric connection structural associationsClamped/spring connectionsEngineeringElectrical and Electronics engineering
The invention relates to the cable maintenance field and especially relates to line repair equipment. The equipment comprises a repair shell. A line connector is arranged in the repair shell. The lineconnector includes a middle connection component and two lock nuts. The two lock nuts are connected to two ends of the middle connection component in a threaded connection mode. A tapered elastic sleeve is arranged in each lock nut. An inlet of a plug wire hole is a corresponding tapered expansion structure. The equipment has advantages that lead connection at a connection portion of a cable is firm and reliable and an over-current area is large; the repair shell covers an outer portion of a cable connection portion and is taken as a repair insulation layer so that a water-proof and moisture-proof property is good, strength is high and the equipment is not easy to be damaged; and the cable can effectively operate for a long time after being connected, and a service life of the cable is prolonged.
Owner:GUANGZHOU PANYU CABLE WORKS
Harmonic wave detection circuit of distribution system and harmonic wave detection method of harmonic wave detection circuit
The invention discloses a harmonic wave detection circuit of a distribution system and a detection method of the harmonic wave detection circuit. The harmonic wave detection circuit comprises a power line L, a power line N, a transformer (1) and a power carrier wave module (2) and further comprises a voltage stabilizing module (3), an optical coupler (4), a sampling resistor R1, a triode V1, a reference voltage VCC and a power line communication module (5), wherein the voltage stabilizing module (3) is electrically connected with the power line L, the optical coupler (4) and the power line N, the sampling resistor R1 is connected in series with the power line L, b electrode of the triode V1 is electrically connected with the sampling resistor R1, an e electrode of the triode V1 is electrically connected with the sampling resistor R1, a c electrode of the triode V1 is electrically connected with the optical coupler (4), and the reference voltage VCC is separately electrically connected with the optical coupler (4) and an input end of the power carrier wave module (2). The detection circuit is advantaged in that power line carrier wave detection on the external network environment can be carried out, and a detection result is stored or sent out.
Owner:NINGBO SANXING MEDICAL & ELECTRIC CO LTD
Device and method for inhibiting generation of hydrates in shaft through automatic early warning and heating
PendingCN112539042AAvoid generatingLong-term effective operationSurveyConstructionsElectric machineMetal sheet
The invention discloses a device and a method for inhibiting generation of hydrates in a shaft through automatic early warning and heating, and belongs to the technical field of natural gas hydrate exploitation. Resistance wire windings formed by tightly and spirally winding resistance wires are arranged on the outer surface of an oil pipe at preset intervals in the axial direction; two ends of the resistance wires are respectively welded on two conductive metal sheets; a temperature and pressure sensor is arranged between any two adjacent resistance wire windings; two sliding grooves servingas electrode moving channels are symmetrically formed in the inner side wall of a marine riser in the axial direction of the marine riser; clamping grooves are formed in the sliding grooves; electrodes are in contact connection with the conductive metal sheets at the clamping grooves; the input end of a first cable is connected with a motor; and the output end of the first cable is connected withthe two electrodes. Local heating can be carried out on a specific time in a specific area to avoid generation of natural gas hydrates, and compared with a traditional method, the method is more energy-saving, safer and more environmentally friendly. A heating device is generally in a turnoff state, and long-term effective operation of a system can be guaranteed.
Owner:JILIN UNIV
Method for treating high-salt-content wastewater by atomization method
PendingCN113526762AImprove processing efficiencyThe method flow is simpleWater/sewage treatment by centrifugal separationMultistage water/sewage treatmentSaline waterParticulates
The invention relates to a method for treating high-salt-content wastewater by an atomization method.Wastewater to be treated is atomized and sprayed into a cyclone, water mist in rising airflow is refined again, and due to different densities of the water mist and salt, heavier salt gradually falls on the inner wall of the cyclone and then falls on a collecting device below; the water mist continues to rise along with the air flow until entering a multi-stage condensation system, and concentrated saline water with different salt contents, trace saline water and water without salt are condensed and separated stage by stage; the separated concentrated saline water flows back to the raw water tank with high saline water content through a return pipe for next separation; the trace salt-containing water is discharged or recycled according to the discharge standard; and the salt-free water is directly recycled as process water. The atomization evaporation technology is used for treating the high-concentration salt-containing industrial wastewater, so that the energy consumption can be reduced, the treatment efficiency can be improved, and meanwhile, the salt can be directly dried into particles.
Owner:洛阳双瑞万基钛业有限公司
Non-metal expansion joint for slag discharge pipeline of boiler
ActiveCN103016889BAvoid the disadvantages of large compression displacement that cannot be resetLong-term effective operationPipeline expansion-compensationThermal insulationAxial displacementInsulation layer
Owner:AEROSUN CORP
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