51results about How to "To meet the conditions" patented technology

The invention discloses a closed explosion test device for quantitative temperature pressure effect evaluation of thermobaric explosives. The device comprises a tank body, wherein the tank body is a closed double-layer tank body; a damping layer is arranged between the double-layer tank body; a vacuumizing pipe is arranged at one end of the tank body; a filling port is formed in the other end of the tank body; a sealing door is arranged on the filling port; a tank outlet is formed at the tank body on the outer side of the sealing door; sensor mounting plates are uniformly distributed on the circumference of the inner wall of the tank body; sensor mounting holes are formed in the sensor mounting plates; an air inlet pipe, an air outlet pipe and a connector are arranged on the tank body. The actual closed environment of the thermobaric explosives is simulated in the established closed explosion environment, the conditions in the explosion and after-burning process of the thermobaric explosives are met, and the closed explosion test device is suitable for an evaluation test of the temperature pressure effect of the thermobaric explosives.

The invention discloses an outdoor all-weather and all-time atmospheric aerosol particle laser radar device which comprises an integrated square cabin, a laser, an intelligent control unit, an optical unit, a signal acquisition and analysis unit, an electric wiper, and a blowing device. The intelligent control unit controls the operation of the machine equipment. The laser emits pulse laser, which is incident on the atmosphere after beam expansion. An optical receiving unit receives back scattered light of atmospheric aerosol particles. A polarization detection prism of a receiving channel separates vertical polarization components from parallel polarization components. A photoelectric detection module converts the light into electrical signals. The signal acquisition and analysis unit acquires, analyzes and displays the electrical signals. Thus, vertical distribution information of the atmospheric aerosol particles is obtained. The device improves the signal-to-noise ratio of detection signals, and has such functions as lightning protection design, photoelectric detection module high-voltage online program-controlled adjustment, instrument internal temperature monitoring and automatic skylight cleaning. The device has a protection grade up to IP65, and meets the requirement for outdoor all-weather and all-time operation.

The invention discloses a continuous brazing composite aluminum-based brazing wire applying nanometer aluminum trioxide and a preparation method of the continuous brazing composite aluminum-based brazing wire applying the nanometer aluminum trioxide. The continuous brazing composite aluminum-based brazing wire applying the nanometer aluminum trioxide is composed of an aluminum-based brazing filler metal core material with a groove formed in the outer surface, a no-corrosive flux used for aluminum and applied in the peripheral groove of the core material in a wrapping manner, and a coating layer sprayed on the surface of the composite brazing flux. The obtained product is excellent in material performance, easy to machine and form, good in brazing process performance, capable of fully adapting to efficient and continuous brazing and excellent in brazing connector performance.

The invention discloses a quick-curing organosilicon pressure-sensitive adhesive, and belongs to the field of adhesives. The organosilicon pressure-sensitive adhesive is obtained by carrying out an addition reaction on a polysiloxane methyl vinyl MQ organosilicon tackifier containing vinyl under the action of a cross-linking agent, a reaction inhibitor and a platinum catalyst. According to the organosilicon pressure-sensitive adhesive provided by the invention, through selection of monomers, especially selection of functional groups and proportions of the functional monomers, optimization andimprovement of a process, and selection of a matching effect of the catalyst and the functional groups of the functional monomers, the adhesive can achieve the purpose of direct winding and quick curing after a base material is coated, and good viscous force and stripping force can be ensured.

The invention provides a high yield cultivating method for brown beech mushroom. By adopting the method, the brown beech mushroom can be cultivated in large scale through industrializing facilities and the growth period can be effectively shortened, thus reducing costs. A fully automatic production line is adopted for completing the whole course of stirring, bottling, disinfection, inoculation, cultivation, mushroom loosening and digging, and the temperature, humidity, ventilation and illumination of cultivation are adjusted manually, thus the best cultivation requirements can be met and the best yield and quality can be obtained. In the cultivating method of brown beech mushroom, soybean skin and corn cob are adopted as cultivation medium to replace wood dust completely, which solves the difficulty of raw material purchase due to the lack of wood dusts. The cultivation of the brown beech mushroom by industrializing facilities can meet the optimal cultivation requirements of the brown beech mushroom; compared with the prior art, the cultivation period is shortened, while the yield is increased.

The invention discloses a self-luminous pavement material and a preparation method. The self-luminous pavement material is prepared from, in percentage by mass, 25%-30% of a light-storing type self-luminous material, 40%-45% of epoxy resin, 10%-15% of a curing agent and 10%-15% of a diluent. The self-luminous pavement material can be directly applied to pavements, is attractive and can give out light continuously for a long time on the basis that the road performance is realized and the application range is further broadened.

The invention discloses a collaborative robot modularized joint compact in structure. The modularized joint is composed of a joint shell, a joint output flange, a low-speed wire protection pipe, a harmonic reducer, a motor assembly, a motor shaft, a brake assembly, a motor end encoder assembly and a joint end encoder assembly which are sequentially connected. The low-speed wire protection pipe isconnected with the joint output flange. The harmonic reducer is connected with the joint output flange and the joint shell. The motor assembly comprises a stator and a rotor. The motor shaft is connected with the motor rotor. One end of the motor shaft is connected with the input end of the harmonic reducer. The brake assembly is of a magnetic attraction friction type, capable of achieving lockingwhen powered off, capable of achieving unlocking when powered on and connected to the motor shaft. Compared with a plug pin type brake, sudden stop is safe, and stop pins cannot be bent. A motor endencoder coded disc and a joint end encoder coded disc are concentrically arranged. A motor end encoder reading head and a joint end encoder reading head are integrated together, the axial space of thejoint can be compact, the integration level can be high, the wiring space is large, and operation is facilitated; and meanwhile the modularized joint further has the characteristics of being high inrigidity and large in load-dead weight ratio.

The invention discloses a waterborne dipping paint for engineering tracks, and a preparation method for the waterborne dipping paint, and relates to engineering track protective paints. The invention provides a waterborne dipping paint for the engineering tracks, and the volatile organic compounds (VOC) are less than 20g/L. The paint belongs to an environment-friendly coating, has low VOC content and small odor, is noninflammable and inexplosive, solves the problems that a solvent-based dipping paint and a water soluble dipping paint has harm to environment and human health, has the advantages of stable bath solution, convenience in construction, wide application range and suitability for large-scale industrial continuous production, solves various problems of sagging, edge shrinkage, bottom leakage, blur and the like of the dipping paint, and accords with the construction condition of low temperature drying or air drying. In the waterborne dipping paint for the engineering tracks, waterborne acrylic emulsion is taken as a base material, propylene glycol, a pH regulator, a dispersing agent, a wetting agent, a defoaming agent I, a defoaming agent II, an antiseptic, a film forming aid, a flashrust inhibitor, a base material wetting agent and a thickening agent are taken as aids, and carbon black and rutile type titanium dioxide are taken as pigments and fillers.

The invention provides a tool for removing a foreign matter from a bundled conductor of a high-voltage line in a live working manner and a method for removing the foreign matter. The tool for removing the foreign matter in a live working manner comprises a double-end pulley suspended from an overhead ground wire and is characterized in that the bottom pulley of the double-end pulley is tied to, through an insulated rope, a double-end foreign matter treater which can be moved adjacent to the foreign matter to treat the foreign matter; the double-end pulley is suspended from the overhead ground wire through a top pulley; the double-end foreign matter treater to which the bottom pulley of the double-end pulley is tied through the insulated rope comprises a U-shaped member for tying; and the two end portions of the U-shaped member are fixedly connected with steel wire beams horizontally and outwardly extending to form a double-end extended thorn. The method comprises the following steps that: a) a worker climbs up a tower with the insulated rope and the double-end pulley; b) the worker hangs the double-end pulley on a ground wire stockbridge damper by using an insulated operating rod; c) a ground worker drags the double-end pulley to a position over the foreign matter by using the insulated rope to treat the foreign matter; and d) the worker climbs down the tower after the foreign matter is removed.

The invention discloses a device and a method capable of generating natural gas hydrate by confining pressure and carrying out pressure-maintaining transfer decomposition. The device comprises a reaction kettle capable of simulating natural gas hydrate generation and pressure maintaining transfer under the stratum confining pressure condition, the bottom of the reaction kettle is connected with asecond two-way hydraulic cylinder, a pressure maintaining ball valve with the same drift diameter as the inner diameter of the kettle is arranged at the top end of the reaction kettle, and the other end of the pressure maintaining ball valve is connected with a first two-way hydraulic cylinder; the first bidirectional hydraulic cylinder and the second bidirectional hydraulic cylinder are respectively connected with a hydraulic station; and the reaction kettle is fixed on a support capable of rotating up and down at 180 degrees. The device can be used for simulating and generating the natural gas hydrate under the stratum confining pressure condition, pressure maintaining transfer of the natural gas hydrate is achieved, decomposition visualization of the natural gas hydrate is achieved, andmore real, more comprehensive and lower-cost guidance is provided for decomposition research of the natural gas hydrate.

The invention belongs to a filling material used for fixing equipments, and especially relates to a room-temperature-cured epoxy resin cast cushion block and a preparation method thereof. According to existing technologies, the fixation of machineries with relatively large weights requires a large amount of bolts, such that the operation is difficult; in an environment with severe corrosion, fixing bolts are likely to be corroded, and the strengths of the bolts are reduced. The a room-temperature-cured epoxy resin cast cushion block provided by the invention is composed of, by weight: 100 parts of epoxy resin, 0 to 20 parts of a toughening agent, 0 to 3 parts of a diluent, 50 to 100 parts of active silicon micro-powder, 5 to 25 parts of an active crystal whisker material, 0 to 3 parts of titanium dioxide, 0 to 3 parts of a pigment, 0 to 1 part of an antifoaming agent, and 5 to 15 parts of a curing agent. The invention is advantaged in that: the surface properties of the product provided by the invention are stable, the product is not easy to contract, and the service life of the product is long. The cushion block can be cured under room temperature, such that the preparation method is simple. With the cushion block, the equipment can be firmly fixed, and requirements under vessel rocking and corrosion conditions can be satisfied.

An oil and gas pipeline defect internal detector universal joint comprises a hollow through connection shaft, wherein the front end and the back end of the hollow through connection shaft are connected with back end shaft holes of two hollow butterfly-shaped cross-shaped fork blocks through rotating hinge pins to be locked through locking nuts, connecting pin holes in the two ends of the hollow through connection shaft are perpendicular to each other, the two hollow butterfly-shaped cross-shaped fork blocks are symmetrically arranged, the front ends of the butterfly-shaped cross-shaped fork blocks are provided with shaft holes, the shaft holes are hinged to a flange on a functional joint of an oil and gas pipeline defect internal detector through a flange connecting hinge pin, the shaft holes in the front ends of the butterfly-shaped cross-shaped fork blocks are perpendicular to the shaft holes in the back ends of the butterfly-shaped cross-shaped fork blocks respectively, and the surfaces, matched with the shaft holes, of the flange connecting hinge pin are provided with sliding thrusting copper sleeves. According to the oil and gas pipeline defect internal detector universal joint, the number of parts is small, the structure is simple, dismounting and mounting are convenient, reliability is high, a cable cannot be exposed outside, the good effect of protecting the electric cable of the oil and gas pipeline defect internal detector is achieved, using working conditions of the oil and gas pipeline defect internal detector are met, and the oil and gas pipeline defect internal detector universal joint can be used for connecting functional joints of oil and gas pipeline defect internal detectors with different types and different calibers.

The invention provides an atomized culture device for vegetables. The culture device is characterized in that a base, a nutrient solution recovery mechanism and planting steps are concentrically mounted in the culture device in sequence from bottom to top, the planting steps are fixed on the nutrient solution recovery mechanism, and the nutrient solution recovery mechanism is mounted on the base through tires in a rolling manner; a prime mover and transmissionmechanism is located below the base and is in transmission connection with the bottom of the nutrient solution recovery mechanism, and the nutrient solution recovery mechanism drives the planting steps to rotate on the base under the driving of the prime mover and transmissionmechanism; an atomizing assembly is arranged in a planting step cavity and connected with an external nutrient solution box; through holes are formed in both the base and the nutrient solution recovery mechanism, nutrient solution spray sprayed by the atomizing assembly is liquefied in the planting step cavity, then flows out through the through holes in the base and the nutrient solution recovery mechanism and flows back to the nutrient solution box through a pipeline, and the nutrient solution is recycled. According to the atomized culture device for the vegetables, incidence rateand culture cost of the vegetables can be reduced while vegetable yield is increased and vegetable quality is improved.

The invention discloses a gray image visual encryption method. In this method, two processes are placed in an error-diffusion feedback loop, which are the generation of split-memory image and the superposition decoding of visual cryptography. Which means, at the encoder end, each pixel or image block is sequentially processed in a scanning order, for each pixel or image block on the resulting split image, check its superposition decoding effect immediately, comparing the reconstructed target image obtained after superposition with the original secret image, obtaining the difference between thetwo, the contrast difference is fed back and diffused to surrounding pixels or image blocks that have not yet been quantized, so as to improve the quality of decoded and reconstructed secret images,wherein the analysis process corresponds to a process of generating a split image from the secret image and the synthesis process corresponds to a process of obtaining a target image from the split image, and the method of the invention places the synthesis in an analysis, that is, an analysis based on the synthesis.

The invention relates to a perforation pressure meter as well as a dispenser and a fisher thereof. The perforation pressure meter comprises a power supply component, a circuit protection cylinder, a pressure collecting component and a pressure transmission joint, wherein the power supply component, the circuit protection cylinder and the pressure transmission joint are sequentially and fixedly connected; and the pressure collecting component is arranged inside the pressure transmission joint. The invention provides the pressure meter capable of descending a well with a perforation gun to monitor pressure variation of the inside of an oil pipe and a formation position and bearing an instant high-pressure impact. The dispenser and the fisher which are used before and after transmission operation can be conveniently and rapidly used for dispensing and fishing the perforation pressure meter.

The invention discloses a preparation method of a culture medium and a fermentation determination method of the culture medium. The non-fruit part of plants is smashed to obtain a mixture, urea of which total nitrogen content is greater than or equal to 46.40% is added into the mixture to adjust the C/N proportion of forestry and agricultural residues, then the water content of the mixture is adjusted, exogenous microorganisms are inoculated, a fermentation vat is adopted to perform fermentation and pile turning, and the culture medium is obtained after a certain time. The highest fermentationtemperature of a pile body mixed with the exogenous microorganisms is 42-54 DEG C, the temperature can last for 48-72 hours, continuous high temperature enables thermophilic microorganisms to proliferate and become dominant microorganisms, large amounts of soluble organic matters and complex organic matters (cellulose, hemicellulose, pectic substances and the like) are decomposed, thereby formingmore stable humus, the continuous high temperature can also kill worm eggs and bacteria in the forestry and agricultural residues, and the hygienic and harmless disposal conditions of the forestry and agricultural residues are satisfied.

The invention discloses a method for fermenting and producing ethyl alcohol through corn starch. The method comprises the steps that 1, the brix of molasses is adjusted to 45 Bx and a pH value is regulated to 3.60 to perform acidification; 2, the molasses obtained after acidification and corn starch are prepared into powder syrup; 3, amylase is added to liquify the powder syrup into liquified mash; 4, saccharifying enzyme, Anjuntai and yeast mash are added to the liquified mash, anaerobic fermentation is performed to obtain mature fermented mash; 5, the mature mash liquid is rectified, and then the ethyl alcohol with the content of 99.5% or above is obtained. The method has the advantages that corn starch fermentation is performed by applying the method, the nutrient substances and conditions required by normal ethyl alcohol fermentation of yeast are met, and the problem that corn starch cannot be normally fermented to produce the ethyl alcohol is solved; the method performs ethyl alcohol fermentation by utilizing the corn starch, the viscosity is greatly reduced, the problem of difficult material conveying due to too high mash liquid viscosity in production is effectively solved, and meanwhile the energy consumption is reduced.

The invention provides a silencing electrostatic air purification device for a ship. The silencing electrostatic air purification device for the ship comprises device door plates, a shell frame, an adjustable air inflow grid, a silencing bend, a sheet type silencer, a pipeline silencer, a metal filter screen, an ionization region, an adsorption region, a fixed air outflow grid and an electric control box. Compared with the prior art, the silencing electrostatic air purification device has the beneficial effects that the air noise control technology and the air purification technology are integrated and designed; the manner that the pipeline silencer, the sheet type silencer and the silencing bend are adopted and an air layer is additionally arranged in a silencing material is adopted for conducting effective treatment on noise of all frequency bands, and the silencing material has a good sound absorption effect on medium-frequency noise and high-frequency noise and has the beneficial effects of being fireproof, resistant to inflaming and free of dust; and the high-voltage electrostatic technology is adopted, all the return air of an air conditioner is subjected to purification treatment in a concentrated manner, the purification treatment efficiency of the device is improved, and on the basis that the noise and the air quality of a cabin are effectively controlled, the occupation of general resources of the overwater ship is greatly reduced, and the workload of seamen is reduced.

The invention discloses a heavy oil modified viscosity reduction method and application. The method comprises the steps that 1, gas and straight-run distillation light distillate in heavy oil raw materials are removed in a distilling device for oil separation, and distillate with the API degree smaller than 7 is obtained; 2, the distillate in the step 1 and a homogeneous catalyst are mixed, a hydrogenation reaction occurs in a suspended bed reactor, and after the reacting distillate is separated, gas and a liquid phase product are obtained; 3, the liquid phase product in the step 3 is distilled in a fractionating tower to obtain gas, light distillate and hydrogenation tail oil, and the hydrogenation tail oil returns to the suspended bed reactor; 4, the straight-run distillation light distillate in the step 1, one or more of the light distillate in the step 3 and the heavy oil raw materials are blended into synthetic crude oil with the API degree larger than 12. The heavy oil modified viscosity reduction method and application have the advantages that the viscosity can be effectively reduced by slightly modifying heavy oil, the transportation conditions of pipeline transportation, shipping and tank cars are met, the transportation problem of poor oil products is solved, no coke is generated in the modifying process, and modified viscosity reduction oil is good in stability and does not need to be subjected to hydrotreating any more.

The invention discloses a flexible tool dual driving mechanism for a surgical robot. The flexible tool dual driving mechanism for the surgical robot comprises a horizontal connecting plate. A first driving support is fixedly installed on the horizontal connecting plate. A motor is installed at one end of the horizontal connecting plate. A first driving wheel is fixedly connected to an output shaft of the motor. A second driving support is fixedly installed at the other end of the horizontal connecting plate. A first guide wheel, a second guide wheel, a middle transmission wheel and a second driving wheel are installed on the second driving support. A shell connecting base is fixed to the second driving support. An auxiliary driving wheel is connected to the shell connecting base. An auxiliary driving wheel shell is arranged on the shell connecting base in a covering mode. Two holes are symmetrically distributed in the auxiliary driving wheel shell in the vertical direction. Compression springs are installed in the two holes respectively. One ends of the two compression springs are pressed at the two ends of a rotary shaft of the auxiliary driving wheel respectively. The flexible tool dual driving mechanism for the surgical robot is convenient to operate and practical and can be conveniently applied to the robot for driving a flexible tool.

The invention discloses a gas chromatography-isotope analysis combined device for measuring carbon isotopes on a logging site, which comprises a gas chromatograph and an isotope analyzer, wherein a peristaltic pump for controlling the flow rate and an electronic condenser for controlling the temperature and humidity are arranged between an outlet of an identifier of the gas chromatograph and a sample inlet of the isotope analyzer, the peristaltic pump collects carbon dioxide gas generated by combustion of hydrocarbon gas in the identifier and controls the flow rate, and the carbon dioxide gasis sent to the isotope analyzer for carbon isotope measurement after the temperature and humidity are controlled by the electronic condenser; and a pre-chromatographic column and a main chromatographic column of the gas chromatograph adopt a packed column, the aperture phi of the chromatographic column is 3 mm, the column length of the pre-chromatographic column is 2.5 m, the column length of themain chromatographic column is 5 m, and the chromatographic column is filled with a 60-80-mesh 13X molecular sieve. According to the invention, the light hydrocarbon content in the drilling fluid andthe contents of methane, ethane and propane carbon isotopes contained in the drilling fluid can be continuously measured in real time on the logging site. The technical conditions of isotope analysison the separation degree and the temperature and humidity of single gas are met.

The invention discloses an aerobic solid-state fermentation system, a fermentation rack body (1) is arranged inside a fermentation chamber, a steam generator, a bacteria strain can, a high-pressure water pump, an air filter and an air compressor are arranged outside the fermentation chamber, the fermentation rack body (1) is internally provided with a tray (6), a spraying device (10) is arranged above the tray, the spraying device is connected with a first reversing valve through a connecting pipe (3), the first reversing valve is connected with the steam generator, the bacteria strain can, the high-pressure water pump and the air filter through a pipeline, the air compressor is connected with a second reversing valve, the second reversing valve is connected with the bacteria strain can and the air filter through a pipeline. The aerobic solid-state fermentation is carried out in a confined space, inoculation and fermentation processes are sealed without the need to enter the fermentation chamber, so that mixed bacteria in the fermentation process contamination can be avoided, inoculation moisture and air can be transported and enter into a fermentation device together with high temperature steam by the same pipeline, pollution caused by unhygienic pipelines can be effectively prevented, moisture and air can be timely and conveniently introduced from the outer side of the fermentation chamber, and the fermentation process is more uniform and efficient.

Systems and methods for making, engineering and processing of degradation-promoted polymers in accordance with their end-use applications and environmental conditions are provided. The systems and methods include incorporating, blending and compounding the degradation-promoting agent(s) into a polymeric material. The resulting degradation-promoted polymeric material can be molded to create a desired end use product that, when exposed to an application-specific environment, the degradation rate of the degradation-promoted polymer can be enhanced compared to the degradation rate of the input polymer(s) without the incorporated degradation-promoting agents.

The invention relates to a method for preparing a drying agent by using eggshells; the method comprises the following steps of: centralizing the eggshells to be cleaned, adding a NaOH solution with 15wt% of concentration to soak the eggshells so as to remove inner membranes of the eggshells, wherein soaking time is about 2-3days; taking out the eggshells, cleaning and drying the eggshells; placing the eggshells in a high temperature furnace, and burning the eggshells for 3-4 hours under the temperature of 900-1200 DEG C; obtaining white powdery calcium oxide after cooling, grinding the white powdery calcium oxide to obtain the calcium oxide powder with the fineness of 20-50 meshes; and bagging and sealing to obtain the drying agent. According to the method, the eggshells which are often discarded in food production process and in life are processed and recycled, thereby avoiding environmental pollution and waste caused by the long-term accumulation of the eggshells and also solving the problems that potential safety hazards exist when the drying agent circulates in the market and the source of raw materials for the traditional drying agent is limited. The drying agent is characterized by fast water absorption, high efficiency, safety, sanitation, non-foreign odor and long time of duration and can be widely applied to various occasions.

The invention discloses a full-gear mechanical differential lock, which comprises an end cover, a left output shaft, a differential mechanism housing and a planet tapered gear; a left end cover (1) of the differential mechanism housing and a right end cover (9) of the differential mechanism housing are fixedly connected to two out ends of the differential mechanism housing (3), the left side and the right side of the mechanical differential lock are in point symmetry by using a cross point of a horizontal center line (24) and a vertical center line (27), the full-gear mechanical differential lock consists of two groups of left and right mutually-symmetrical planetary gear mechanisms, and the left side and the right side of each planetary gear mechanism are respectively in line symmetry by using a left axial line (25) and a right axial line (26). The invention can meet the demands of on torque distribution and locking conditions in various practical uses, and can be applied to a center, a front and a rear axle differential locks of a vehicle without changing other structures of the vehicle and structures on telex.

The invention discloses a light non-metal armored submarine cable. The submarine cable comprises a central cable composed of one or more electric units, an armor layer and an outer coating layer, wherein the armor layer is twisted outside the central cable; the armor layer is sleeved with the outer coating layer; the armor layer is formed by twisting a plurality of circular or flat nonmetal armored elements and/or a plurality of armor metal wires; when the non-metal armored element is circular, the non-metal armored element is composed of a non-metal rod and an outer sheath extruded outside the non-metal rod, or is composed of a central rod body composed of a plurality of non-metal rods which are stacked in a tangent manner, and an outer sheath extruded outside the central rod body; and when the non-metal armored element is flat, the non-metal armored element is composed of a plurality of non-metal rods and an outer sheath extruded outside the non-metal rods. According to the invention, the problems of large submarine cable weight and large vertical laying installation stress under the condition of large water depth are solved, lighter submarine cable weight is achieved while the mechanical performance of the deep submarine cable is ensured, and the laying construction and the operation safety of the submarine cable are ensured.

The invention discloses high-strength weather-resistant low-temperature-resistant hot-rolled cap-shaped steel used for a railway freight open wagon and a production technology of the high-strength weather-resistant low-temperature-resistant hot-rolled cap-shaped steel used for the railway freight open wagon, and belongs to the technical field of steel rolling production. The cap-shaped steel comprises the following components in percentage by mass: 0.10 to 0.15 percent of C, 0.20 to 0.65 percent of Si, 1.40 to 1.55 percent of Mn, less than or equal to 0.020 percent of P, less than or equal to 0.015 percent of S, 0.3 to 1.0 percent of Cr, 0.025 to 0.065 percent of Ni, 0.30 to 0.55 percent of Cu, 0.030 to 0.045 percent of Nb, less than or equal to 0.0002 percent of H, less than or equal to 0.008 percent of N, 0.020 to 0.040 percent of Alt and the balance Fe and trace residual elements. The preparation technology of the high-strength weather-resistant low-temperature-resistant hot-rolled cap-shaped steel used for the railway freight open wagon comprises the steps of blast furnace molten iron production, molten iron pretreatment, converter smelting, argon blowing, LF refining, RH refining, continuous casting full-protection casting, cap-shaped steel rolling and cap-shaped steel straightening. The cap-shaped steel has excellent appearance quality, strength, weather resistance and low temperature resistance at the same time, and the use requirements of the cap-shaped steel in the railway freight open wagon are effectively met so that the safety of the whole wagon can be improved, and the cap-shaped steel has high economic benefits.

The invention discloses industrial continuous production equipment for black phosphorus. The equipment includes a heat-resistant screw conversion reactor, a charging pipe, a discharging pipe, a propeller blade, a motor and a heating device. The charging pipe is arranged on one end of the heat-resistant screw conversion reactor. The discharging pipe is arranged below the other end. The propeller blade in the heat-resistant screw conversion reactor is mounting on a rotating shaft. The two ends of the rotating shaft are connected to the heat-resistant screw conversion reactor through shaft sleeves. The motor is arranged on one of the heat-resistant screw conversion reactor and connected to the rotating shaft. The heating device is arranged outside the heat-resistant screw conversion reactor and the charging pipe. The outside of the heat-resistant screw conversion reactor is wrapped in the heating device. The heat-resistant screw conversion reactor includes multiple heating areas. An inertgas input pipe is arranged on the discharging pipe. According to the invention, the production process flow is optimized, the production cost is low, the operation is simple and safe, the automationdegree is high, and continuous production can be carried out under atmospheric pressure.

The invention discloses a coal mine water utilization method. The method comprises the following steps: calculating mine water resource development and utilization potential values according to mine water inflow, mine water treatment loss water quantity, poisonous, harmful and unavailable water quantity, actual utilization quantity in a mining area and actual utilization quantity outside the mining area; And according to the potential value, regulating and storing the mine water discharged from each mining area with the water quality reaching the standard after centralized treatment through aregulating reservoir, and conveying the mine water to an industrial park, a mining area residential area and a mining area ecological park through a pipe network to realize recycling of the mine water. According to the invention, reasonable planning can be carried out according to mine water resource conditions and utilization basic conditions of each region, and the utilization rate of mine wateris greatly improved.

The invention belongs to the technical field of hydrogen production converter control, and particularly relates to a photovoltaic hydrogen production system control method based on an incremental conductance method. On the basis of a step-down converter, a conductance increment method control technology is added to track a photovoltaic maximum power point and is directly coupled with an electrolytic hydrogen production system to improve the hydrogen production efficiency. The method comprises the following steps: step 1, collecting voltage and current information output by a photovoltaic cell in different working environments; step 2, analyzing the photovoltaic step-down converter; step 3, designing a conductance increment control method; step 4, sending the measured and collected electric quantity information and the required calculation information to a control module, and sending the calculated information to a step-down converter switching device at the same time; step 5, designing a water electrolysis system with a hydrogen production function; and step 6, directly coupling the step-down converter in the step 4 with the water electrolysis hydrogen production system, sending voltage and current signals output by the step-down converter into the water electrolysis system, and finally performing stable hydrogen production through the water electrolysis system.