39results about How to "Improve load shock resistance" patented technology

A production method of a quenched and tempered high-intensity Q890D super-thick steel plate comprises processing steps as follows: liquid iron pretreatment, converter steelmaking, secondary refining, continuous casting including dynamic soft reduction and electromagnetic stirring, heating, rolling, pre-straightening, online quenching, offline quenching, tempering, finishing, performance examination and ultrasonic flaw detection. Steel comprises chemical composition in percentage as follows: not more than 0.16% of C, 0.20%-0.40% of Si, 1.30%-1.40% of Mn, not more than 0.015% of P, not more than 0.003% of S, 0.03%-0.05% of Als, not more than 0.10% of Nb+V+Ti, not more than 1.0% of Cu+Ni, 0.35%-0.45% of Cr, 0.45%-0.70% of Mo, not more than 0.0025% of B and the balance of Fe and unavoidable impurities. The produced high-performance quenched and tempered high-intensity Q890D super-thick steel plate with a thickness ranging from 100 mm to 120 mm can meet the manufacturing requirement of heavy machinery for a mine, a port and the like.

The invention relates to a desulphurization wastewater zero discharge system of a coal-fired unit of a thermal power plant. The system sequentially comprises a sequencing batch reactor, a double-medium filter, a Na/Cl bed, an electrodialysis device, a high-pressure water pump, a security filter, a primary reverse osmosis device and secondary reverse osmosis device. The sequencing batch reactor is used for removing metal ions and sulfate radicals in water. The double-medium filter is used for furthermore removing suspended matter in water. The Na/Cl bed is used for removing high-valence ions such as calcium ions and magnesium ions in water. The electrodialysis device is used for concentrating wastewater. The high-pressure water pump and the security filter are used for transferring the wastewater and removing fine particles in the wastewater. The primary reverse osmosis device and the secondary reverse osmosis device are used for performing further desalination on water. The desulphurization wastewater zero discharge system has the advantages that the sequencing batch reactor is adopted, the load impact resistance of the system is improved, and water can be clear and conditioned; the ion selecting and adsorbing function of the Na/Cl bed is adopted, and crystallized products reach industrial purity; by means of high salt content of electrodialysis concentrated water, regeneration of the Na/Cl bed is achieved; the secondary reverse osmosis device is adopted, the desalination efficiency is high, and investment is saved; no new substances is generated in the whole process.

The invention relates to a production method of a quenched and tempered high-strength Q890E super-thick steel plate. The process steps are as follows: pretreatment of molten iron, steel-making by a converter, secondary refining, continuous casting (dynamic soft reduction and electromagnetic stirring), heating, rolling, pre-straightening, online quenching, offline quenching, tempering, finishing, performance testing and ultrasonic flaw detection. Steel comprises the following chemical components in percentage by weight: not more than 0.16% of C, 0.20-0.40% of Si, 1.30-1.40% of Mn, not more than 0.015% of P, not more than 0.003% of S, 0.03-0.05% of Als, not more than 0.10% of Nb+V+Ti, not more than 1.0% of Cu+Ni, 0.30-0.50% of Cr, 0.45-0.70% of Mo, not more than 0.0025% of B and the balance of Fe and inevitable impurities. The CEV (carbon equivalent) is controlled to be not more than 0.60, and the CEV is calculated according to the following formula: CEV=C+Mn/6+(Cr+Mo+V)/5+(Ni+Cu)/15. The produced high-performance 100-120mm quenched and tempered high-strength Q890E super-thick steel plate can meet the needs for manufacturing heavy machinery in mines, ports and the like.

The invention discloses an automatic medicine adding control method and a device for chemically-assisted dephosphorization in sewage treatment. A total-phosphorus on-line monitor and an iron-ion on-line monitor are used for respectively sampling and monitoring the middle position of the aerobic zone of a biological reaction tank of a sewage treatment plant and the water outlet of a secondary sedimentation tank; the total phosphorus concentration of a water sample on the middle position of the aerobic zone of the biological reaction tank and the iron-ion concentration in a water sample on the water outlet of a secondary sedimentation tank are collected; meanwhile, the water inlet flow of the biological reaction tank is monitored by a flowmeter; according to the total phosphorus concentration of the water sample on the middle position of the aerobic zone of the biological reaction tank and the water inlet flow of the biological reaction tank, the medicine adding amount is determined; and meanwhile, the medicine adding amount is rectified by the total phosphorus concentration calculated by the iron-ion concentration in the water sample on the water outlet of the secondary sedimentation tank. The medicine adding amount determined by the invention is more economic and reasonable, the effluent total phosphorus of a sewage treatment plant is feasibly guaranteed to reach the standard,the effluent stability is improved, the effluent water quality stability is guaranteed, and the resistance to impact load of the chemical synchronous dephosphorization technology is enhanced.

The invention relates to a production method of a quenched and tempered high-strength Q690E super-thick steel plate. The process steps are as follows: pretreatment of molten iron, steel-making by a converter, secondary refining, continuous casting (dynamic soft reduction and electromagnetic stirring), heating, rolling, pre-straightening, online quenching, offline quenching, tempering, finishing, performance testing and ultrasonic flaw detection. Steel comprises the following chemical components in percentage by weight: not more than 0.14% of C, 0.20-0.40% of Si, 1.00-1.20% of Mn, not more than 0.015% of P, not more than 0.003% of S, 0.03-0.05% of Als, not more than 0.10% of Nb+V+Ti, not more than 1.0% of Cu+Ni, 0.40-0.60% of Cr, 0.45-0.70% of Mo, not more than 0.0025% of B and the balance of Fe and inevitable impurities. The CEV (carbon equivalent) is controlled to be not more than 0.57, and the CEV is calculated according to the following formula: CEV=C+Mn/6+(Cr+Mo+V)/5+(Ni+Cu)/15. The produced high-performance 100-120mm quenched and tempered high-strength Q690E super-thick steel plate can meet the needs for manufacturing heavy machinery in mines, ports and the like.

The invention relates to a production method of a quenched and tempered high-strength Q500D super-thick steel plate. The process steps are as follows: pretreatment of molten iron, steel-making by a converter, secondary refining, continuous casting (dynamic soft reduction and electromagnetic stirring), heating, rolling, pre-straightening, online quenching, offline quenching, tempering, finishing, performance testing and ultrasonic flaw detection. Steel comprises the following chemical components in percentage by weight: not more than 0.15% of C, 0.20-0.40% of Si, 1.00-1.30% of Mn, not more than 0.015% of P, not more than 0.003% of S, 0.03-0.06% of AlT, not more than 0.10% of Nb+Ti+V, not more than 1.0% of Cu+Ni, 0.40-0.70% of Cr, 0.30-0.60% of Mo, not more than 0.0025% of B and the balance of Fe and inevitable impurities. The CEV (carbon equivalent) is controlled to be not more than 0.58, and the CEV is calculated according to the following formula: CEV=C+Mn/6+(Cr+Mo+V)/5+(Ni+Cu)/15. The produced high-performance 100-120mm quenched and tempered high-strength Q500D super-thick steel plate can meet the needs for manufacturing heavy machinery in mines, ports and the like.

An integrated high-density coal water treatment clarifier comprises an agglomerating zone, a flocculating zone, a water distributing zone, a settling zone, an inclined plate, a clear water zone and agravity filtration zone, wherein the flocculating zone is formed in one side of the agglomerating zone, and is communicated with the bottom of the agglomerating zone; the water distributing zone is arranged on one side of the flocculating zone; the water distributing zone is communicated with the settling zone; the clear water zone is arranged on one side of the settling zone; the settling zone iscommunicated with the clear water zone; a filtering zone is arranged on one side of the clear water zone, and clear water in the clear water zone can flow into the filtering zone. Through the integrated high-density coal water treatment clarifier, coagulation is divided into an agglomerating process and a flocculating process; in the agglomerating zone and the flocculating zone, an appropriate speed gradient G value and an appropriate dwell time T value for the agglomerating process and the flocculating process are controlled in a mechanical stirring form respectively; meanwhile, through internal circulation of sludge in a flocculating tank, the flocculating effect of coal-containing wastewater is strengthened, the floc density is increased, mud-water separating and settling performance are enhanced, the coal-containing wastewater is rapidly, efficiently and stably treated effectively, and a recycling standard thereof is met; therefore, the integrated high-density coal water treatmentclarifier has good economic and environmental benefits.

The invention discloses a method for wastewater zero discharging of the leather industry. The method is characterized by comprising the following steps of 1, cow leather preprocessing, 2, softening processing, 3, oxidation aeration processing, 4, sedimentation, and 5, filtering and oil removal. According to the softening processing in the leather manufacturing process, fur is prevented from being degraded by a chemical reducing agent, and COD and BOD loads in a depilation waste liquid are reduced. According to the oxidation aeration processing, the load impact resistance is large; the physical technology is utilized for reducing the dosage of harmful chemical substances and lowering the suspended matter content in wastewater, a solid-liquid separator is used for solid-liquid separation, and the amount of metal ions is decreased; according to the step of filtering and oil removal, oil components are removed, the processing efficiency is high, it is ensured that water flows out stably, the water quality is reliable, resources are saved, and the environment is protected.

The invention discloses a real-time intelligent reclaimed water treatment device. The device consists of five parts, namely a regulating tank, a biochemical reaction tank, a sedimentation tank, a reclaimed water tank and a system operation controller. The system detects the water quality of inlet water and outlet water in real time; according to the detected inlet water quality index value, the total hydraulic retention time of the system is adjusted and the sludge load of the system is increased by automatically turning on or off or adjusting the output air volume of a regulating tank air blower, adjusting the sludge return amount of the sedimentation tank and the air blast amount of the biochemical reaction tank and turning on or off or adjusting the reflux amount of the biochemical reaction tank flowing back to the regulating tank in advance, so the system can well cope with large impact load; by detecting the quality of the effluent, unqualified effluent completely flows back to the regulating tank for deep treatment, so that the quality of the effluent is ensured to be qualified; and the regulating tank is used as an anaerobic nitrification tank and a primary aerobic tank according to the water quality of inlet and outlet water, and closely participates in the biochemical treatment process of the system.

The invention discloses a two-stage ozonation-biological contact coupled advanced sewage treatment method and a device thereof. Sewage or RO concentrated water subjected to biochemical pretreatment issequentially subjected to ozonation, biological contact, ozonation and biological contact for combined treatment, biochemical effluent at the rear end flows back to ozonation inflow water at the front end, and the sewage is circularly treated in an ozonation-biological contact system through backflow; due to the fact that the biodegradability of the sewage is improved to a certain extent every time when the sewage flows through the ozonation stage, biodegradable ozonation products are degraded in time in the biochemical treatment stage, and the synergistic coupling effect of biodegradabilityimprovement of ozonation and low-cost mineralization of biochemistry is enhanced by controlling the biochemical effluent reflux ratio. According to the method, the treatment efficiency is improved under the condition of the determined total ozone addition amount, and the ozone consumption is reduced under the condition of a determined removal rate; and the method has important significance for reducing the investment cost, the operation cost and the engineering land occupation of advanced sewage treatment.

The invention discloses a precision tubular microporous aerator mounting and detecting system and a precision tubular microporous aerator mounting and detecting method. The precision tubular microporous aerator mounting and detecting system consists of a workbench, a mounting facility and a detecting facility, wherein the mounting facility and the detecting facility are arranged on the workbench; through a mounting pneumatic switch and a detection switch, mounting and detection of tubular microporous aerators are switched; through an air compressor or an air blower, an air source is generated; the air source is connected with a pressure reducing valve through a pipeline; a filter is connected to a pneumatic valve; the mounting pneumatic switch is mounted between the filter and the pneumatic valve; the mounting pneumatic switch controls the air source entering the pneumatic valve; the mounting facility and the detecting facility are connected with a main controller; and the main controller collects, stores, sorts and analyzes data information of each tubular microporous aerator. The precision tubular microporous aerator mounting and detecting system is scientific in structure, reliable in performance, easy to manufacture, convenient to use, easy to operate and precision in mounting, and is especially applicable to urban sewage treatment, new construction and expansion of a large factory and reconstruction of an old aeration tank.

The invention provides a take-off and landing device for an ultra-light small unmanned aerial vehicle. The take-off and landing device is composed of a skid plate, a vertical tail fixing piece and a pulley mechanism. According to a size and a position of the airplane vertical tail, two pairs of vertical tail fixing piece clamping grooves and two square tire limiting holes are arranged in the skidplate. The two vertical tail fixing frames penetrate through the clamping grooves to be fixedly connected with the airplane vertical tail; and the two square tire limiting holes are limiting mountingholes corresponding to the positions of corresponding vehicle-mounted fixing devices so that a undercarriage not only can automatically take off and land in a sliding manner, but also can take off ina vehicle-mounted manner and land in a sliding manner when a runway environment is poor. The device has good compression resistance, tensile strength and torsion resistance performance, a plate structure of a main body greatly increases a contact area when the undercarriage lands so that an impact load caused by the dead weight of an aircraft at the moment of landing is dispersed, an impact load resistance capability is improved, and damage to an airplane during landing is reduced to the minimum.

The invention belongs to a method for efficiently treating coal gasification wastewater in a biochemical mode. Specifically, a logical sequence of units in a conventional A2O2 process is re-arranged according to pollutant removal characteristics; reaction conditions are improved, removal efficiency, on a respective specific pollutant, of each unit is improved, efficient removal of the pollutants in wastewater is realized by a system, and water quality of outlet water is improved.

The invention discloses an anti-load-impact rural sewage treatment device and method, and relates to the technical field of sewage treatment.The sewage treatment device comprises a tank body, and an inner cavity of the tank body is divided into an anaerobic zone, a first aerobic zone, an anoxic zone, a second aerobic zone and a settling zone from one end to the other end of the tank body; aeration devices are arranged in the anaerobic zone, the first aerobic zone, the anoxic zone and the second aerobic zone; the anaerobic zone and the anoxic zone are connected with water inlet pipes; the settling zone is connected with a water outlet pipe; and the nitration liquid reflux device controllably refluxes the mixed liquid in the second aerobic zone to the anoxic zone. According to the arrangement, the aeration device is used for controlling the gas flow supplied to each functional area, so that the functions of the functional areas can be changed, and the functional areas are adjusted in advance according to the water quantity fluctuation and water quality concentration fluctuation of rural sewage so as to adapt to the current situation that the water quality and water quantity of the rural sewage are unstable, and the sewage treatment effect is ensured; and the load impact resistance of the integrated sewage treatment equipment is improved.

The invention discloses a micro gas-turbine power station, and belongs to the field of power generation equipment. The power station mainly comprises a digital electric controller, a power generator and a micro gas turbine, wherein a plate fin type heat regenerator is arranged on the micro gas turbine, and the plate fin type heat generator surrounds the outer part of the micro gas turbine; the digital electric controller comprises a controllable boosting and rectifying system, an inverter grid-connected system and a central control system; the micro gas turbine is coaxially flexibly connected with the power generator; the power generator, the controllable boosting and rectifying system and the inverter grid-connected system are sequentially connected through cables; and the controllable boosting and rectifying system and the inverter grid-connected system are connected with the central control system through cables. According to the power station disclosed by the invention, noises are small, tail gas is convenient to recycle and maintenance cost is low; and the power station is wide in applied range, and effectively overcomes the problem that the power station cannot be applied in the distribution type power supply field due to the fact that existing diesel engine power generation equipment has a cylinder pulling phenomenon.

The invention provides a production method of a tempered high-strength Q800D super-thick steel plate. The production method comprises the processing steps of molten steel pre-treatment, converter steelmaking, external refining, continuous casting (dynamic soft reduction and electromagnetic stirring), heating, rolling, pre-straightening, online quenching, off-line quenching, tempering, finishing, performance examination and ultrasonic flaw detection, and is characterized in that steel comprises the following chemical components: not more than 0.16% of C, 0.20-0.40% of Si, 1.10-1.30% of Mn, not more than 0.015% of P, not more than 0.003% of S, 0.03-0.06% of Als, not more than 0.10 of Nb, V and Ti, not more than 1.0% of Cu and Ni, 0.40-0.75% of Cr, 0.50-0.75% of Mo, not more than 0.0025% of B and the balance of Fe and inevitable impurities; CEV (carbon equivalent) is controlled to be not more than 0.60 and is computed according to the formula C+Mn/6+(Cr+Mo+V)/5+(Ni+Cu)/15. The produced high-performance 100-120mm tempered high-strength Q800D super-thick steel plate meets the requirements for manufacturing heavy machinery for mines, ports and the like.

The invention discloses an ozonation-biochemical coupled water treatment method which comprises the following steps: sequentially carrying out front-end ozonation treatment and rear-end biochemical treatment on water to be treated, returning rear-end biochemical effluent to front-end ozonation inlet water, and carrying out flow return to circularly treat the water to be treated in an ozonation-biochemical system for multiple times. Due to the fact that the biodegradability of the to-be-treated water is improved to a certain extent in the ozonation stage each time, biodegradable ozonation products in each time are degraded in time in the biochemical treatment stage, and the synergistic coupling effect of biodegradability improvement of ozonation and low-cost biochemical mineralization is enhanced by controlling the biochemical effluent return ratio. According to the method, the treatment efficiency can be improved under the condition of the determined total ozone addition amount, the ozone consumption can be reduced under the condition of the determined removal rate, and the investment cost, the operation cost and the engineering land occupation of water treatment are reduced.