34results about How to "Eliminate weak links" patented technology

In a normal butane isomerization process where the isomerization effluent (108, 114) is fractionated in a deisobutanizer (116) operated such that a lower boiling fraction (118) is provided containing at least 80 mass-% isobutane and a higher boiling fraction (122) containing normal butane and at least 10 mass-% isobutane. The higher boiling fraction (122) is contacted with a selectively permeable membrane (124) to provide a permeate (126) containing normal butane-containing and a retentate (128) containing at least 80 mass-% isobutane. The preferred membranes are sieving membranes having a C4 Permeate Flow Index of at least 0.01 and a C4 Permeate Flow Ratio of at least 1.25:1.

The invention discloses a precast wall casing structure of a reinforced concrete superposed shear wall and a splicing method thereof. The precast wall casing structure of the reinforced concrete superposed shear wall comprises a reinforced concrete precast wall casing, a bump gap of the precast wall casing, a wall hollow cavity, rebars of the bump gap of the precast wall casing, a rebar bracket, an additional constructional rebar and a thermal insulation layer. The invention further discloses a splicing constriction method of the precast wall casings. With the precast wall casing structure of the reinforced concrete superposed shear wall and the splicing method of the precast wall casing structure provided by the invention, the horizontal joint junction of the reinforced concrete superposed shear wall is remarkably improved and therefore the integrity, the bearing capacity and the earthquake resistant behaviour of the junction joint of the reinforced concrete superposed shear wall are enhanced. The invention realizes that the reinforced concrete superposed shear wall is equal to a common entire cast-in-site shear wall, and can produce higher social and economic benefits.

The invention discloses a method for manufacturing cement-base conducting composite materials, which belongs to the technical field of civil engineering. The method is characterized in that a plane stainless steel net is manufactured into a solid stainless steel net of different waveforms. When a cement-base conducting composite material specimen is manufactured, the wave crests of the electrodes of two solid stainless steel nets are arranged oppositely; and as the basal body of the cement-base conducting composite material can be made of cement paste, cement mortar or concrete, and the conductive phases incorporated can be carbon fiber, powdered carbon, steel fiber, steel scrap, plumbago or carbon nanometer tubes, the grid sizes of the plane stainless steel net, the waveforms, the cycles and the amplitudes of the waveforms of the electrodes of the solid stainless steel nets can be selected on a rational basis according to the types of the material of the base body and the conducting material besides considering the type and the size of the specimen in practical application. The invention has the advantages that the contact resistance between the electrodes and the base body can be reduced; the influence of polarization effect is reduced; the bonding effect of the electrodes and aggregate is improved; and the accuracy of the resistance test of the cement-base conducting composite material is improved.

The invention discloses a pine nut peeling machine, relating to a peeling device for seed capsules of nutlets. The invention comprises a fuselage, a feeder funnel arranged on the up end of the fuselage, an entwisting structure arranged down the discharge gate on the feeder funnel inside the fuselage, a discharge gate arranged down the entwisting structure on the fuselage and an actuating motor of the entwisting structure. The entwisting structure is a running entwisting roller with the surface of soft rubber material and a structure of fixed entwisting board which is close to the entwisting roller or two closed entwisting roller structures with the surface of soft rubber material. The effective result of the invention is that a mechanized peeling of seed capsules of pine nut is realized in the peeling process of a mechanical arm imitating hands of people, which significantly improves the peeling efficiency in the production of pine nut food. The invention is also characterized in that the seed capsule of the pine nut that goes through a peeling mechanism is entirely peeled without crashing the nut, which removes the weakest process in the mass production of the pine nut food.

The invention provides a seismic behavior based optimization method and system for a building structure. The seismic behavior based optimization method comprises the following step: A1, determining the integral target seismic behavior index of the structure and the seismic behavior index of a target construction member; A2, designing an initial structure, and dividing the construction members with the same boundary condition, the same cross section size and the same material parameter in the same layer of the structure into one class; A3, obtaining the integral damage index of the structure; A4, detecting whether the integral damage index satisfies a constraint condition, if so, performing step A5, and if not performing step 2; A5, obtaining the seismic behavior index of various classes of construction members of the structure; A6, detecting whether the seismic behavior index of various classes of construction members of the structure satisfies a condition of convergence, if so, finishing the optimization, and if not, performing step A7; and A7, determining the step size of next optimization step, updating a structural system, and returning step A3.

A high-strength antiwear multi-toothed-roller drill bit for drilling well has two or more palms whose upper parts are connected to form a whold drill bit body and whose lower parts are jibaxle, and multiple toothed rollers installed onto said jibaxle. Said toothed rollers is composed of the rollers with big tip on tooth and the roollers with flat front end on tooth. It has long service life.

The invention discloses a screw rod installation structure of an injection molding machine. The screw rod installation structure comprises a rotation shaft and a screw rod. A connection shaft hole is formed in the end of the rotation shaft, and the screw rod is inserted into the connection shaft hole for shaft connection. The rotation shaft is provided with a clamping ring capable of adjusting and hooping the screw rod in the connection shaft hole in the radial direction, and the clamping ring and the rotation shaft are fixedly connected with the screw rod hooped in the radial direction through bolts. According to the screw rod installation structure, the rotation shaft and the clamping ring are used for clasping, the bolts are used for compression, and therefore the clasping structure can be tightly attached to the surface of the screw rod; torque and axial force are transmitted through compression deformation, the stressing weak link of the screw rod is eliminated, and therefore the strength of the screw rod is improved; for disassembling or assembling the screw rod, just the bolts need to be loosened and do not need to the detached, then the screw rod can be disassembled, and therefore frequent replacement of the screw rod is convenient. The screw rod installation structure has the advantages of being simple in structure and convenient to disassemble, assemble and use and lowering the machining and manufacturing cost.

The invention discloses an in-situ SiC particle reinforced Ti6Al4V preparation method. The method comprises the following steps: (1) putting Si powder and C powder into high-energy grinding equipment for mechanical alloying, grinding for 8-48 hours, wherein the mass ratio of the Si powder to the C powder is (2-3):1, then adding SiO2 powder which accounts for 5-20% of the total mass of the Si powder and the C powder, and further grinding for 4-10 hours to obtain a mixed material; (2) uniformly mixing titanium powder, master alloy powder and the mixed material, wherein the addition amount of the titanium powder accounts for 80-95% of the total mass of the titanium powder and the master alloy powder, the addition amount of the master alloy powder accounts for 5-20% of the total mass of the titanium powder and the master alloy powder, the addition amount of the mixed material accounts for 5-40% of the titanium powder and the master alloy powder, and compression molding to produce blanks; and (3) sintering the blanks in a vacuum sintering furnace for two stages at 700-900 DEG C for 0.5-3 hours, then heating to be 1300-1500 DEG C and sintering in an argon atmosphere for 0.5-3 hours. The reinforcement phase of a composite material obtained by the method is produced in situ, interfaces are densely connected together, and the composite material has high strength and is suitable for industrial scale.

The invention discloses a construction method for strengthening a perforated plate and a floor slab. The construction method is characterized by comprising the following construction steps: (1) a mortar surface layer of the perforated plate and a mortar surface layer of the floor slab are removed; (2) filler in seams between the perforated plate and a wall body is removed, and the removal range reaches the top surface of a ring beam; (3) a steel linear plate is mounted; (4) a hole is drilled in the wall body, and a steel strand passes through the drilled wall hole and is fixed on the steel linear plate through an anchorage device; (5) the steel strand is fixed on the steel linear plate through the anchorage device after being stretched, and a gap between the steel strand and the wall hole is sealed through high-strength epoxy resin; (6) a seam between the perforated plate and the wall body is filled with expansive concrete; (7) a waterproof layer is constructed; (8) a fine aggregate concrete layer is poured on asphalt felt. The construction method for strengthening the perforated plate and the floor slab is convenient to operate and low in construction cost.

The invention discloses a novel sandwich electrolytic manganese anode plate and a fabrication method for the novel sandwich electrolytic manganese anode plate. The novel sandwich electrolytic manganese anode plate is characterized by comprising an anode conducting beam (2), a lead alloy anode main plate (5) and a conducting copper row (6), the lead alloy anode main plate (5) and the anode conducting beam (2) are formed by integrated pouring casting, the lead alloy anode main plate (5) internally contains a sandwich copper plate (8) with the thickness being 2-3 mm, the sandwich copper plate (8)and the conducting copper row (6) are welded together to form a whole, the sandwich copper plate (8), the conducting copper row (6) and a welding mouth (7) are entirely buried in the lead alloy anodemain plate (5), the middle of the position between the anode conducting beam (2) and the lead alloy anode main plate (5) is provided with a through hole which is taken as a hoisting hole (3), and thelead alloy anode main plate (5) is provided with a plurality of square holes which are taken as circulating holes (1). The novel sandwich electrolytic manganese anode plate is light in weight and high in conductivity and mechanical strength, and by means of the novel sandwich electrolytic manganese anode plate and the fabrication method for the novel sandwich electrolytic manganese anode plate, the electrolytic effect and electrolytic efficiency can be greatly improved.

The invention provides an anti-seepage system and drainage shaft lap structure for a second-type storage and disposal site. The structure comprises a drainage shaft. The drainage shaft comprises a shaft foundation and a shaft wall on one side of the shaft foundation. An HDPE connection lock is embedded in the shaft well foundation. The other side of the shaft foundation is provided with an anti-seepage system. The two sides of the anti-seepage system are correspondingly provided with a shaft sidewall anchoring trench and a reservoir area anchoring trench. The shaft sidewall anchoring trench isconnected with the shaft foundation. The structure eliminates the weak link of connection between the anti-seepage system and the drainage shaft, and ensures the safety and reliability of the anti-seepage system. By adopting the combined structure of the double-layer anti-seepage system, an auxiliary anti-seepage system and an anti-seepage protection system, the anti-seepage system and drainage shaft lap structure takes geomembrane as a main material, thereby promoting the reliability of the anti-seepage system in the reservoir area of the storage and disposal site of second-type general industrial solid waste, and also having a certain reference significance for the projects of domestic waste landfill and safe landfill disposal site of hazardous waste.

The invention relates to a fireproof node for a building door or window opening and a construction method. The node includes a door or window opening surface layer on the main structure, a door or window frame installed at the opening, a sealing layer between the opening and the door or window frame, and a door or window sash arranged on the door or window frame. The improvement is: a layer of foamed ceramic sheet refractory structure layer is added on the surface layer of the door or window opening. The construction method comprises the following steps of: coating cement-based polymer rubbercement at the opening of the door or window, sticking a foamed ceramic plate door or window frame into a stacked and foamed ceramic plate frame, filling the reserved gap with polyurethane foam, coating cement mortar protection surface layer. By increasing the foaming ceramic plate fireproof structure layer on the inner surface of the door or window opening, the fireproof and isolation performancesof the door or window opening node is improved, the weak link of the inner and outer fireproof and isolation of the building is eliminated. When fire happens outdoors, the danger to indoor personneland properties is reduced and longer evacuation time is left.

The invention relates to a weak link identification and capacity expansion transformation method for a park integrated energy system. The method comprises the following steps: 1) modeling PIES and each device; 2) constructing a PIES operation efficiency evaluation index system; 3) identifying the weak link of the existing PIES through three stages of data acquisition, data analysis, index measurement and calculation and the weak link; and (4) enabling the existing PIES to be subjected to expansion transformation, so that the efficiency of the PIES in the aspects of operation economy, energy conservation, emission reduction, renewable energy consumption promotion and the like is improved. According to the weak link identification and capacity expansion transformation method for a park integrated energy system, the problems of poor coherence between an existing PIES planning stage and an operation stage, unreasonable equipment type selection and capacity configuration, large difference between the PIES actual operation effect and an initial design target and the like are solved, the weak link of the system is identified starting from existing PIES operation efficiency analysis, and existing PIES is planned and transformed, the potential of the system is mined, and the operation economy and environmental protection property of the system are improved.