37results about How to "Stable ratio" patented technology

The invention provides a sewage treatment deodorization device, and relates to the technical field of sewage treatment, the sewage treatment deodorization device comprises an underneath channel, the rear end of the underneath channel is fixedly provided with a tail seat, the front end of the underneath channel is fixedly provided with a head seat, and a spiral propeller is rotatably arranged in the tail seat and the head seat; a first motor is fixedly arranged outside the head seat and is in transmission connection with the spiral propeller; a middle bin is fixedly arranged at the top of the lower channel in a sealed mode. An upper channel is fixedly arranged at the top of the middle bin. The device is provided with a strip-shaped frame, a synchronous driving function of conveying sewage and adding a deodorant and a flocculating agent is provided, the strip-shaped frame can convey the sewage and can also make contact with a trigger piece in the backward moving process, a control piston is extruded, and a liquid material in the control piston penetrates through a one-way valve B to be input into an upper channel for filling; meanwhile, the powder feeder is driven to move back and forth to automatically supplement powder, so that automatic deodorization, flocculation and conveying are realized, and the problem that an existing deodorization device is inconvenient to automatically add powder in equal proportion is solved.

The invention relates to the technical field of hot blast stoves, and discloses an energy-saving and environment-friendly chemical hot blast stove which comprises a main body, a synchronous feeding mechanism, an ash discharging mechanism and a waste heat utilization mechanism. A bottom plate is fixedly arranged at the bottom of the main body, a plurality of bases are fixedly arranged at the bottom of the bottom plate, a material mixing cavity is formed in the top of the main body, and the material mixing cavity is cylindrical. By arranging the synchronous feeding mechanism, the larger the air flow in an air input pipe is, the larger the thrust generated by air to turbine blades is, the higher the rotating speed of a turbine shaft is, the rotating speed of a vertical shaft is increased accordingly, the rotating speed of a rotating pipe is increased at the same time, the centrifugal force borne by a sliding block is increased, and the expansion amplitude of an arc-shaped blocking piece is increased; the flow area of the through holes is increased, the flow of the fuel gas is increased accordingly, so that the proportion of air and the fuel gas in the main body is kept stable, the fuel gas can be fully combusted, and the utilization rate of the fuel gas is increased.

The invention relates to the technical field of molybdenum-copper composite board preparation, in particular to a method for preparing a molybdenum-copper composite board based on a freeze-drying method, which comprises the following steps: preparation of slurry, preparation of a molybdenum skeleton, determination of a copper block, infiltration sintering and post-treatment. According to the method, the problem that two phases of an existing molybdenum-copper composite material are distributed unevenly is effectively solved, the density of the molybdenum-copper composite material is improved, the molybdenum-copper composite material has excellent conductivity, the freeze drying cost is low, and industrial production of the high-performance molybdenum-copper composite plate can be achieved.

The present invention relates to the field of casting technology, specifically to a casting device for producing resin concrete drainage ditches, comprising a casting lifting and lowering cylinder, an inner partition cover cylinder, a U-shaped empty pipe rack, an anti-blocking liquid distribution pipe, a driving cavity disk, a central spindle, a spindle through cavity, a dynamic shaft vibration rod and an oscillation driver, wherein an inner partition cover cylinder is fixedly arranged inside the casting lifting and lowering cylinder, the lower part of the inner partition cover cylinder is open, the U-shaped empty pipe rack is U-shaped, and one side of the U-shaped empty pipe rack is located between the gap between the casting lifting and lowering cylinder and the inner partition cover cylinder, and the other side is located inside the inner partition cover cylinder, and the surface of the U-shaped empty pipe rack is connected and provided with an anti-blocking liquid distribution pipe; the casting device of the present invention can evenly mix the curing agent while casting the resin concrete drainage ditch, thereby reducing the waste of raw materials caused by the surplus raw materials after casting.

This invention provides an ink mixing device for a packaging box printing machine, relating to the field of ink processing technology. The ink mixing device for the packaging box printing machine includes a mixing tank and a bottom tank; it also includes a drive motor, the output end of which is connected to a pressing mechanism and a reciprocating mechanism. The pressing end of the pressing mechanism is connected to a piston, which moves within a metering mechanism. An adjustment mechanism for metering is also provided on the outside of the metering mechanism. Inside the mixing tank, a stirring assembly and a scraper are provided for ink mixing. The stirring assembly and scraper are driven by the drive motor. The reciprocating end of the reciprocating mechanism is connected to a scraper ring for scraping the inner wall of the mixing tank. This invention achieves coordinated operation of metered ink delivery, efficient mixing, and automatic tank wall cleaning by simultaneously driving the pressing mechanism, stirring assembly, and reciprocating mechanism with a single drive motor, effectively reducing equipment energy consumption and structural complexity.

The utility model discloses a urine sample collection and preservation device, which belongs to the technical field of sample experiment reaction and comprises a preservation container and a collection container, the collection container is sleeved outside the preservation container and is detachably matched with the preservation container, the collection container is provided with an open collection cavity, and the preservation container is provided with a sealed storage cavity; the storage container is of a transparent structure and is provided with at least a first scale mark and a second scale mark, in the storage cavity, a first capacity space is formed between the first scale mark and the bottom of the storage container, and a second capacity space is formed between the second scale mark and the bottom of the storage container. The volume of the second capacity space is larger than that of the first capacity space. The first scale mark and the second scale mark are used as marks, the preserving fluid is quantitatively added, the urine sample and the preserving fluid are quantitatively mixed and preserved, it is ensured that the urine sample is relatively stable, cells in the urine sample are well preserved, and the accuracy of detection data is obviously improved.

The present invention relates to a control system and method for manufacturing mixed coal gas by mixing blast furnace gas with coke oven gas. The control system includes a blast furnace gas flow regulating valve arranged on a blast furnace gas pipeline and a coke oven gas flow regulating valve arranged on the coke oven gas pipeline; the blast furnace gas pipeline is also provided with a pressure recording alarm instrument 1 and a flow recording and regulating cumulative instrument; the coke oven gas pipeline is also provided with a pressure recording alarm instrument 2, a flow recording ratio regulating cumulative instrument and a pressure recording instrument 1; the blast furnace gas pipeline downstream of the blast furnace gas flow regulating valve and the coke oven gas pipeline downstream of the pressure recording instrument 1 are connected to the mixed gas pipeline, and the mixed gas pipeline is provided with a pressure recording instrument 2. The present invention can not only provide mixed coal gas with stable pressure and constant mixing ratio to downstream users, but also ensure the safety of the front-end coke oven gas pipeline and the blast furnace gas pipeline.

This invention discloses a direct injection mixing intake structure for an LNG gas engine, comprising a multi-point injection module. The multi-point injection module includes a guide vane, an intake manifold, a mixer, and nozzles. The intake manifold is connected to the guide vane, the mixer is located in the intake channel of the intake manifold, and the nozzles are mounted on the guide vane and connected to the mixer. Several sets of guide vanes from the multi-point injection modules are sequentially connected in series to form a gas passage. The nozzles of each set of multi-point injection modules inject the gas from the gas passage into the mixer of their respective multi-point injection module, where it mixes with air supplied to the intake manifold of that multi-point injection module to form a mixed gas. Each set of multi-point injection modules corresponds one-to-one with each cylinder of the gas engine, effectively ensuring that the mixed gas drawn into each cylinder maintains a uniform and stable air-fuel ratio.

The invention provides thin film deposition equipment and a manufacturing method of an NMOS (N-channel metal oxide semiconductor) device, and belongs to the field of semiconductors. The thin film deposition apparatus includes a housing having a sputtering chamber. The target material is arranged opposite to the substrate, the target material comprises a first sputtering material and a second sputtering material, and the atomic weight of the first sputtering material is different from that of the second sputtering material. And the radio frequency power supply is used for generating plasma to bombard the target material and sputter the target material to the surface of the substrate to form a thin film. And the external member is arranged in the sputtering chamber, the external member is provided with a sputtering layer with a certain thickness, and the sputtering layer is made of the same material as the target material. Through the sputtering layer with a certain thickness deposited on the suite, the threshold voltage of the device is relatively stable, the performance of the product is improved, the process window of the product is also enlarged, the utilization rate of a machine table is improved, and the loss of a target material is reduced.

The invention discloses a concrete continuous preparation device, and belongs to the technical field of concrete preparation, the concrete continuous preparation device comprises a feeding device, the feeding device is used for feeding raw materials, the feeding device is provided with a mixing device, the mixing device is used for fully mixing the raw materials, and the mixing device is provided with a temporary storage device; and the temporary storage device is used for temporarily storing the prepared concrete. The feeding device is matched with the screening mechanism, automatic feeding of gravel and cement ash can be achieved, intermittent feeding of the gravel is used for driving feeding of the cement ash, the automation degree is high, it is guaranteed that the feeding ratio is stable, and continuity is good; when the mixing motor mixes the raw materials, the water inlet mechanism is driven to intermittently feed water, and the mixing column rotates while revolving, so that the preparation efficiency is high; the interior of the mixing barrel is divided into three layers, raw materials can be fully mixed, the raw materials continuously move in the space of the three layers under the action of the shifting plates, and concrete is prevented from being solidified in the preparation process.

This invention provides a method for producing single-cell protein using a mixed bacterial culture, comprising the following steps: performing primary seed culture on methanogenic bacteria, *Tricholoma materata*, and *Glucosinolate methyl-eating bacteria* to obtain primary seed solutions; mixing the primary seed culture solutions evenly to obtain a mixed bacterial solution; inoculating the obtained mixed bacterial solution into a secondary seed culture medium for cultivation to obtain a secondary seed solution; inoculating the obtained secondary seed solution into a fermentation medium for scale-up cultivation to obtain a fermentation broth; separating the solid and liquid components of the obtained fermentation broth, harvesting the bacterial cells, and obtaining single-cell protein. This method for producing single-cell protein using a mixed bacterial culture improves the utilization rate of the carbon source methane and the yield of single-cell protein.

The utility model provides a kind of splash-proof foam shield intelligent closestool, belong to intelligent closestool technical field, including closestool body, the detachable nesting of closestool body back inner cavity is equipped with foaming control component, the foaming control component includes nesting frame, intelligent control panel, elastic clamp, the bubble agent storage tank for storing foaming agent, first ration pump, second fixed pump and mixing pipe, the nesting frame top end fixed nesting is equipped with intelligent control panel.The utility model is assisted by human body inductor cooperation foaming control component to realize automatic, quantitative foaming and the effective generation of foam shield to improve splash-proof effect, simultaneously, it is convenient to dismount and facilitate overhaul and add foaming agent, reduce maintenance difficulty and cost, effectively improve overall use convenience and practicality.

The invention belongs to the technical field of composite board preparation, and particularly relates to a polyurethane honeycomb core composite board preparation device and a preparation method thereof.The polyurethane honeycomb core composite board preparation device comprises a mounting frame, the side wall of the mounting frame is connected with a controller, the upper side wall of the mounting frame is fixedly connected with a supporting frame, and the supporting frame is of an inverted-L-shaped structure; a first electric push rod is fixedly connected to the upper side wall of the supporting frame, and the movable end of the first electric push rod penetrates through the supporting frame and is fixedly connected with a lifting plate. The two back plates of the polyurethane honeycomb core composite plate are roughened in advance, so that the surface roughness of the back plates can be effectively improved, the contact area between an adhesive and the back plates is increased, the interface anchoring effect is enhanced, the bonding strength and interface reliability between the back plates and the adhesive layer and between the back plates and the honeycomb core are remarkably improved, the defects of layering, debonding and the like are reduced, and the service life of the composite plate is prolonged. Meanwhile, the stability and the service life of the plate under high and low temperature, damp and hot and external force are improved.

The invention relates to a preparation method of a reduced-state methyl glycolate catalyst, which comprises the following steps: dissolving water glass into water at 60 DEG C, adding a surfactant, and then adding dilute acid until the pH value of the solution is 8-9 to generate a white precipitate A; dissolving soluble copper salt and soluble silver salt in water, then adding polyvinylpyrrolidone, and stirring until the polyvinylpyrrolidone is completely dissolved to obtain a solution B; and adding the solution B into the solution A, adding sodium borohydride, stirring at room temperature, reacting for 0.5-1 hour to obtain a mixture formed by a compound of nanoscale simple substances Cu and Ag and SiO2, washing, filtering, drying, roasting and forming. The catalyst for preparing methyl glycolate through dimethyl oxalate hydrogenation is high in activity, good in stability and high in selectivity, the conversion rate of dimethyl oxalate can be larger than 99%, the selectivity of methyl glycolate is larger than 92%, reaction by-products are few, and target products are easy to separate.

The present invention discloses a flip-chip LED chip with low void ratio and a preparation method thereof. The flip-chip LED chip comprises a substrate, a light-emitting structure arranged on the substrate, an electrode arranged on the light-emitting structure, a welding layer arranged on the electrode, and a point-measurement contact layer arranged on the welding layer; the welding layer is made of Au and Sn, and the mass percentage of Au and Sn is (15% to 30%): (70% to 85%); wherein the welding layer is a laminated structure, including a multi-layer Sn / Au laminate; or, the welding layer is a laminated structure, including a multi-layer Sn / AuSn laminate; or, the welding layer is a laminated structure, including a multi-layer Au x Sn 1‑x Layer, each layer of Au x Sn 1‑x The ratio of Au to Sn is different. The flip-chip LED chip of the present invention has low void rate and high yield.

The utility model provides a gas distribution control system based on a volume method, which comprises a gas distribution cavity group module, a temperature control heating module and a pressure transmitter, and is characterized in that the gas distribution cavity group module comprises a source gas cavity A, a source gas cavity C and a gas mixing cavity B. The inner ends of the source gas cavity A, the source gas cavity C and the gas mixing cavity B are respectively connected with a cylinder; a pneumatic valve A and a pneumatic valve C are arranged between the source gas cavity A and the gas mixing cavity B and between the source gas cavity C and the gas mixing cavity B. The pneumatic valve A and the pneumatic valve C are in signal connection with a position sensor A and a position sensor C. The outer end of the source gas cavity A and the outer end of the source gas cavity C are provided with a pneumatic valve A and a pneumatic valve C respectively. And the source gas cavity A, the gas mixing cavity B and the source gas cavity C are respectively connected with a pressure transmitter. The gas distribution proportion and threshold value of each time are measured according to a volumetric method, and the problem of emission and recovery of redundant gas is solved.

The utility model relates to a welding gas energy-saving device which comprises a gas mixing tank and a control panel, a gas mixing cavity is arranged in the gas mixing tank, a plurality of gas inlet pipes are arranged on the side face of the gas mixing tank, a gas outlet pipe is arranged at the bottom of the gas mixing tank, the gas inlet pipes and the gas outlet pipe are communicated with the gas mixing cavity, and electromagnetic valves are arranged on the gas inlet pipes and the gas outlet pipe. The inner wall of the gas inlet pipe is tangent to the inner wall of the gas mixing tank, a current sensor is arranged on the control panel, and the electromagnetic valve is electrically connected with the current sensor. The mixed gas is stable in proportion, uniform in mixing, good in protection effect and small in gas consumption, and a large amount of energy can be saved in continuous welding.

The invention provides a continuous preparation method and equipment of a granular calcium-based desulfurizer, and belongs to the technical field of preparation of desulfurizers, the method comprises the following steps: burdening, grinding and dry mixing: grinding and mixing raw materials according to a certain proportion, and feeding the obtained mixture into a wet mixing unit; wet mixing: adding water into the mixture for wet mixing, and feeding the wet mixture into a strip extrusion unit; strip extrusion: carrying out extrusion molding on the wet mixed material, and feeding molded particles into a drying unit; drying: drying the formed particles and then feeding into a finished product storage unit; and finished product storage: conveying the dried formed particles to a finished product bin. According to continuous preparation of the granular calcium-based desulfurizing agent, a large amount of manual participation can be reduced, continuous feeding and grinding can be achieved, the requirement for fineness of raw materials is greatly lowered, blocky raw materials can be used, the proportion of mixed materials is stable, large-amount storage can be achieved, the step of dry mixing is omitted subsequently, and the production time is shortened.

The invention relates to the technical field of emulsion preparation equipment, in particular to a water-based hydraulically-driven emulsion proportioning device which comprises a water-based hydraulically-driven device, a first non-circular gear pump and a second non-circular gear pump, an output shaft of the water-based hydraulic driving device can be driven by a high-pressure water medium to rotate; the first non-circular gear pump and the second non-circular gear pump are respectively connected to an output shaft of the water-based hydraulic driving device; under the driving of the water-based hydraulic driving device, a preset amount of water is output through the first liquid outlet, a preset amount of emulsified oil is output through the second liquid outlet, and after the output water and the emulsified liquid are mixed and stirred, the emulsified liquid with the specific concentration is formed. The water-based hydraulic driving device is adopted as a driving source, and the water-based hydraulic driving device has the advantages that the hydraulic source is easy to obtain, efficiency is high, noise is low, overload safety is excellent, heat is low, and the structural size is small; the proportion of output water and emulsified oil is stable; the control mode is simple and accurate, and reliability and stability are excellent; and the liquid pumping efficiency is higher.

The invention discloses a method for preparing a catalyst for dry reforming of methane. The catalyst comprises the following active ingredients in percentage by mass: 1.5-2.5% of ferric nitrate; 5-7% of nickel chloride; 0.8%-1.2% of soluble salt of an auxiliary agent metal La; 90.3%-91.7% of a molecular sieve; and a plurality of external deionized water. Uniformly mixing and stirring in a glass cup, dipping, heating, evaporating to dryness, roasting and reducing to obtain the bimetallic nickel-iron-based catalyst. And ultrasonic dispersion is used in the dipping process. The invention aims to provide the method for preparing the catalyst for methane dry reforming, so that the reaction efficiency of methane and carbon dioxide dry reforming is effectively improved, and the generation rate of hydrogen is improved.

The present application relates to the technical field of fermentation medium, more specifically, it relates to a high-density fermentation medium for streptococcus suis and preparation and application thereof.The medium comprises beef infusion powder 1-5 parts, tryptone 1-10 parts, pancreatic casein peptone 1-10 parts, soybean peptone 1-5 parts, dipotassium hydrogen phosphate 1-5 parts, sodium chloride 1-10 parts, yeast extract 1-10 parts and glucose 1-5 parts.

The present invention relates to a negative electrode material of a lead-carbon battery for power energy storage, comprising 100 parts of lead powder, 6-10 parts of sulfate, 1-2 parts of mixed material, 0.5-1 parts of CMC adhesive and 8-15 parts of water; the mixed material comprises 1-3 parts of microporous ceramic, 2-5 parts of conductive carbon black, 0.5-1 parts of conductive fiber, 2-5 parts of lead powder, 3-8 parts of nucleating agent, 1-3 parts of dispersant and 0.5-1 parts of activated carbon; the present invention also relates to a preparation method for preparing the negative electrode material of a lead-carbon battery for power energy storage, comprising a filling process, a material mixing process, a mixing process and a paste process. The present invention solves the problem that the existing lead-carbon battery has poor performance during high current charging and discharging.

The application discloses a device and method for realizing simultaneous nitrogen removal of urban sewage and photovoltaic cell wastewater based on a reinforced autotrophic / heterotrophic coupled granular sludge process. The device mainly comprises a horizontal flow defluorination reaction sedimentation tank, an intelligent adjusting tank, an aerobic deep oxidation system and a reinforced autotrophic / heterotrophic coupled granular system. The method realizes efficient simultaneous nitrogen removal of urban sewage and photovoltaic cell wastewater through a double-flow inlet strategy: the residual micro-particles and calcium ions after defluorination pretreatment are used as crystal nuclei to promote the granulation of subsequent sludge; the impact resistance of the coupled granular sludge is enhanced through a biofilm carrier; and the intelligent adjusting tank is used to realize precise water distribution, so that the reinforced autotrophic / heterotrophic coupled granular system can stably and efficiently remove nitrogen. The application not only realizes simultaneous deep treatment of urban sewage and photovoltaic cell wastewater, but also strengthens the structural stability of the granular sludge by using the calcium components in the wastewater, solves the problem of difficulty in forming the granular sludge and improves the nitrogen removal performance.

The utility model discloses an automobile air conditioner air inlet box and an automobile, which comprise an air inlet box shell, an outer circulation air inlet, a first inner circulation air inlet, a second inner circulation air inlet, an air outlet, a first air door, a second air door, an actuator and a transmission mechanism, the transmission mechanism is matched with a rotating shaft of the first air door and a rotating shaft of the second air door, the actuator drives the transmission mechanism to drive the rotating shaft of the first air door and the rotating shaft of the second air door to rotate, and when the first air door is located at the first position and the second air door is located at the third position, the automobile air conditioner air inlet box is in an outer circulation mode. When the first air door is located at the first position and the second air door is located at the fourth position, the air inlet box of the automobile air conditioner is in an internal air compensation mode, and when the first air door is located at the second position and the second air door is located at the fourth position, the air inlet box of the automobile air conditioner is in an internal circulation mode. The internal and external air inlet ratio stability in an internal air compensation mode can be ensured, and the cost is reduced.

This invention discloses a 96-channel peptide synthesizer and its synthesis method, comprising a reaction system, a solvent management system, and a control system. The reaction system includes a housing, a reaction rack, reactors, a dispensing tower, and amino acid bottles. The housing is equipped with partitions to achieve functional zoning. The reaction rack houses 96 detachable reactors with oscillating stirring capabilities. The amino acid bottles feature quick-release pull-rings and cylinder-operated metering structures. The dispensing tower employs staggered operation for synchronous liquid supply. The solvent management system uses positive nitrogen pressure as its power source and achieves precise solvent delivery through a dispensing pump, transfer bottle, and solvent valve. The control system is fully automated via computer control, capable of monitoring channel status, editing process parameters, and supporting mode switching. This invention achieves high-throughput, automated peptide synthesis with 96 channels, offering advantages such as convenient operation and high synthesis efficiency.

The present invention relates to a multi-point coating type multifunctional composite polymer material reinforcement production process and system, wherein PP resin is sent from a PP resin raw material station to a discharge bin of a feeding station; volatile organic compounds are removed from the PP resin in the discharge bin of the feeding station and then sent to a cooling bin; the cooled PP resin is sent to a PP resin storage bin for standby use; PP resin 1, PP resin 2, CMB masterbatch, CA coupling agent and uniformly mixed ADD additive raw materials are sent from the feeding station to a buffer bin; the raw materials in the PP resin storage bin and the buffer bin are weighed through a feeding system and then sent to an extruder feed port; the glass fiber is controlled to be pulled out from the glass fiber station and then enter the extruder die head; the glass fiber is controlled to be moved out from the glass fiber station and then enter the extruder die head and mixed with the molten PP resin so that the surface of the glass fiber is coated with the PP resin; the glass fiber combined with the PP resin is controlled to be extruded from the extruder die head. The present invention ensures the uniformity of the resin coating layer on the surface of the long glass fiber, so that the product has higher strength and impact resistance.

The utility model discloses a semi-automatic refrigerator cleaning solution production device, which relates to the technical field of cleaning solution production, and comprises a bottom plate, the outer surface of the bottom plate is fixedly connected with a bearing frame, the inner side of the bearing frame is fixedly connected with a raw material barrel, and the inner side of the bearing frame is fixedly connected with a storage pipe. The raw material stirring device is reasonable in design structure, the raw material barrel, the stirring mechanism, the bottom plate, the bearing frame and the conveying pipe are matched, the bottom plate and the bearing frame can support the storage pipe and the raw material barrel, and the stirring mechanism can stir materials in the raw material barrel; the stirring mechanism can stir materials in the raw material barrel in an up-down stirring mode, and when granular floating objects are precipitated in the materials and formed, the granular floating objects can be evenly distributed in the raw material barrel due to the fact that the stirring mechanism can stir the granular floating objects up and down; therefore, the problem that a small part of materials which are precipitated and are difficult to mix are still concentrated at the position close to the circle center is solved.

A valve seat is connected to a valve body through threads, a recoil disc and a sealing block are arranged in the valve body, the valve body is connected with a valve deck through threads, a valve rod, a spring and other parts are arranged in the valve deck, an adjusting screw is arranged on the valve deck to adjust the pre-tightening force of the spring, and the spring is locked through a locking nut. The valve cover is connected with the valve bonnet through threads. The sealing block is pressed on the recoil disc through the pressing block and the locking nut, the steel ball, the valve rod and the spring are arranged on the sealing block, the sealing block acts on the sealing face of the valve seat through the pre-tightening force of the spring, and therefore the safety valve is sealed.

The invention discloses a preparation device and a preparation method of a neutron absorption composite material. The invention provides a preparation device of a neutron absorption composite material, which comprises a raw material spheroidal graphite sieving machine, a stirring mixer, a blank pressing machine, a high-temperature forming machine, a cooling machine, a milling machine tool, a finished product cutting machine and a control box. The method specifically comprises the following steps: step 1, ball-milling and sieving raw materials of the neutron absorption composite material; 2, stirring and mixing the neutron absorption composite material; step 3, pressing a blank of the powder slurry; 4, performing high-temperature hot press molding on the blank; 5, cooling the neutron absorption composite material plate; 6, milling the surface of the neutron absorption composite material; and 7, cutting a finished product of the neutron absorption composite material. The physical and chemical properties of the neutron absorption composite material are more stable, the preparation method is advanced and reasonable in process, continuous and compact, data are detailed and accurate, and the material is reasonable in proportion and has stable chemical and physical properties and mechanical properties.

This utility model discloses a multiphase flow calibration device, including a liquid storage unit, a pumping unit, an oil-water mixer, a lifting simulation platform mechanism, a gas supply system, a standard flow system, and a computer control system. The liquid storage unit is connected to the pumping unit via a manual gate valve and is connected to the oil-water mixer via the standard flow system. The outlet of the oil-water mixer is connected to the downstream standard flow system and a gas-liquid mixing pipeline. The gas supply system is connected to the gas-liquid mixing pipeline, and its output end is connected to the lifting simulation platform test pipeline. The output end of the gas-liquid separator is connected to the oil-water mixer to form a circulation. The lifting simulation platform mechanism simulates the multiphase flow pattern. The oil-water mixer integrates heating, mixing, and separation functions. The standard flow system ensures stable medium flow. This device has advantages such as automated control and medium recycling, meets the requirements for multiphase flow calibration, solves the problem of insufficient research on multiphase flow in inclined pipes, and adapts to the simulation requirements of complex well types in oil and gas extraction.