13results about How to "Increased intensity" patented technology

The utility model belongs to the technical field of petrochemical engineering, and discloses an oil removal bag which comprises a coalescer and three activated carbon filters, a partition plate is arranged in a coalescer cylinder of the coalescer, a plurality of through holes are uniformly formed in the partition plate, blocking membrane coalescence elements are mounted on the through holes, and a primary inlet is formed in the top surface of the coalescer cylinder on one side of the partition plate; a primary outlet is formed in the bottom surface of the coalescer barrel on the other side of the partition plate; the primary outlet is connected with a secondary inlet on the activated carbon filter, a tube plate is arranged at the lower part in a filter cylinder of the activated carbon filter, and a water cap is arranged on the tube plate; activated carbon filler is arranged on the water cap; a water distributor is arranged above the activated carbon and provided with a water inlet pipe, and the water inlet pipe is communicated with an elbow through a forged pipe. The coalescer and the activated carbon filter are combined for use, so that the effect of further purifying water after oil removal is realized, the two-stage water treatment effect is good, the maintenance cost and the operation difficulty are relatively low, and the treatment efficiency of oil-water separation and the water quality standard are improved.

The invention discloses a glass fiber composite material metro cleaning type ventilation double-leaf protective air-tight door which comprises a door frame and door leaves. The door frame is fixed to a first civil air defense door frame wall of a cleaning air duct, the door frame serves as a basic support, the door leaves made of double SMC materials in a mold pressing mode are connected through the split hinges, and rotary opening and closing of the door leaves are achieved. A small electric protective air-tight door is arranged on the inner side of the door leaf, a rubber pipe valve is arranged on the outer side of the door leaf, and an oil screen dust filter is arranged between the small electric protective air-tight door and the rubber pipe valve; a lock is further fixed to the inner side surface of the door leaf, a lock hole is formed in the corresponding position of the door frame, and a lock head of the lock is inserted into the lock hole of the door frame. And a positioning jack is arranged at the end part of the outer side of the door leaf. According to the door body, glass fiber composite materials are adopted as door leaf materials, wave absorption is achieved through a rubber pipe valve, protection and sealing are enhanced through a small electric protection sealing door, and clean type light ventilation and protection in wartime are achieved.

This invention discloses a method for constructing a cofferdam bottom sealing system in deep silt geological conditions. The successful application of this method solves the problem of insufficient bearing capacity in deep silt layers. Previous methods used the original foundation surface as the reference elevation for the bottom concrete, increasing the bond strength between the concrete and the sheet pile cofferdam / steel casing to meet the concrete's anti-buoyancy and anti-sinking requirements. However, large-scale application of this method leads to increased concrete usage and lower safety performance in subsequent construction. This invention further removes silt from the original foundation to ensure no silt deposition on the bottom sealing base surface, preventing the bottom sealing concrete from mixing with deposited silt and reducing its strength. Furthermore, it uses replacement filling to form a new base structure, increasing the bearing capacity of the bottom sealing base surface and enhancing the safety of subsequent pile cap construction. Overall, it reduces material waste and significantly saves economic costs.

The application discloses a preparation method of low-shrinkage low-heat low-carbon concrete, and has the technical characteristics that high-water-absorption autoclaved silicate functional aggregate is used to replace gravel and yellow sand, and the mass sum of fly ash and mineral powder in the cementing material can be up to 60% at most. The high-water-absorption water-saturated autoclaved silicate functional aggregate and the expanding agent are added into the concrete, the humidity is released through the functional aggregate, the internal curing and the expansion of the expanding agent are cooperated, the self-shrinkage, the drying shrinkage and the hydration heat shrinkage of the concrete are reduced, and the strength of the concrete is improved; the grading of the fine aggregate of the superfine yellow sand is improved through the addition of the fine functional aggregate, the working performance of the concrete is improved, and the low-carbon environmental protection of the concrete is realized through the large amount of mineral admixtures.

The invention discloses a ceramic bearing device for thin glass processing and a ceramic supporting strip preparation method, the ceramic bearing device for thin glass processing comprises a plurality of ceramic supporting strips and a supporting frame, the ceramic supporting strips are vertically arranged, and the plurality of ceramic supporting strips are arranged in parallel; the ceramic supporting strip comprises a continuous ceramic line, and the diameter of the ceramic line is 1-2 mm. The ceramic line is provided with a plurality of first arc-shaped ceramic line segments, every two adjacent first arc-shaped ceramic line segments are connected through a connecting part, and each connecting part comprises a horizontal ceramic line segment or a second arc-shaped ceramic line segment. The first arc-shaped ceramic line segment is of an arc-shaped structure; the arc-shaped ceramic line segment is of an arc-shaped structure; the ceramic support strip is prepared by integral forming; the prepared ultra-thin glass bearing device is resistant to acid and alkali corrosion and stable at high temperature, and the supporting strips used for bearing ultra-thin glass are integrally formed and long in service life.

This invention discloses a gradient self-excited low-carbon cement and its preparation method, comprising the following raw materials in parts by weight: 15-20 parts of early-age self-excited cementitious material with a particle size of 0.1-10 μm and a specific surface area of ​​1150-1250 m². 2 / kg, uniformity coefficient >1.1; 45-50 parts of middle-aged self-stimulating cementitious material, particle specific surface area 380-400m² 2 / kg, uniformity coefficient > 1.1, R 45μm Silica residue <5%; 20-25 parts of long-term self-activating cementitious material, particle specific surface area 480-550 m² 2 / kg, uniformity coefficient > 1.1, R 45μm Residue on sieve <2%; 10-15 parts of rheology-active material, particle specific surface area 240-300 m² 2 / kg, uniformity coefficient > 0.9, R 45μm The residue on the sieve is less than 40%. This invention achieves a gradient self-excitation effect from early age to long age, ensuring the mechanical properties of low-carbon cement throughout its entire service life.

This invention discloses a method for preparing concrete based on construction waste, specifically relating to the field of building materials technology. The concrete based on construction waste is prepared from recycled aggregate, sulfoaluminate cement, zeolite carrier internal curing agent, and saturated steam containing zwitterionic resin. The components and weight proportions of the raw materials for preparing the concrete based on construction waste are as follows: 100 parts recycled aggregate, 30-50 parts sulfoaluminate cement, 2-7 parts zeolite carrier internal curing agent, and 0.8-3 parts saturated steam containing zwitterionic resin. This invention achieves its goals by using an ethanol solution of composite cation exchange resin to purify harmful ions in the aggregate, an activating liquid to stimulate surface activity and promote gel formation, and a composite liquid containing polyvinyl alcohol and anion exchange resin to form a dense coating film to block erosion, enhance the interface's resistance to degradation, improve durability, and solve the problem of susceptibility to erosion.

The present invention relates to a steel material comprising, in mass%, 0.30%≤C≤0.45%, 0.10%≤Si≤1.00%, 0.60%≤Mn≤1.20%, 0.20%≤Cr≤0.70%, 0.30%≤V≤0.47%, Ti≤0.015%, P≤0.100%, and S≤0.080%, the balance being Fe and unavoidable impurities, and having a P0 value defined by P0=P0'×V / P1, satisfying P0≥0.30, where P0'=Mn+0.49Cu+0.89Ni+0.40Cr-0.30Si, and P1=C+0.07Si+0.16Mn+0.61P+0.19Cu+0.17Ni+0.2Cr+V, in the formula, each element symbol represents the content of each element in mass%.

This invention provides a modular, actively load-bearing, prefabricated composite reinforcement device and method. The reinforcement device, used for reinforcing tunnels, includes: at least one reinforcement body connected to the surface of the tunnel to be reinforced. Each reinforcement body is a multi-curvature column conforming to the tunnel structure, comprising several substrates and compressive-resistant material. The substrates are connected by connecting components. Each substrate has a hollow structure, and the compressive-resistant material fills the cavities. An exhaust pipe is provided on the higher section of the substrate on the reinforcement body, and an injection hole is provided on the lower section of the substrate. When there are more than two reinforcement bodies, they are arranged parallel to each other along the axial direction of the tunnel at intervals. Several reinforcement bodies are arranged in a parallel, ring-shaped distribution along the circumferential direction of the tunnel structure's axis, and are spaced apart. Adjacent reinforcement bodies are connected by joints and force transmission rods, forming a grid-like overall structure that provides overall stability.

The application discloses a high-strength rapid solidification forming system and a preparation method thereof. The high-strength rapid solidification forming system comprises a prefabricated membrane body, support ribs and rapid solidification materials. The prefabricated membrane body has a through integrated inner cavity. The prefabricated membrane body is provided with at least two through holes which are communicated with the outer part and the inner cavity. A plurality of support ribs are arranged in the inner cavity in parallel or staggered and abut against the inner wall of the prefabricated membrane body for shape retention of the inner cavity. The rapid solidification materials fill the inner cavity, wrap the support ribs and abut against the inner wall of the prefabricated membrane body to support the prefabricated membrane body. The prefabricated membrane body provided with the support ribs provides an internal space, and the inner cavity is filled with the rapid solidification materials, so that the high-strength rapid solidification forming system can be prepared, and the high-strength rapid solidification forming system has the advantages of rapid forming, high strength, prefabrication, convenient movement and the like.

The present application relates to the field of subgrade soil treatment, and particularly relates to a subgrade in-situ soil high-performance ecological enhancer, a preparation method and a construction method, the enhancer comprising the following raw materials in percentage by mass: sulphoaluminate cement 45-85%; Portland cement 8-25%; quicklime 3-5%; fly ash 0-15%; silica fume 0-8%; slag powder 0-15%; sodium sulfate 3-5%; sodium silicate 0-2%; lithium carbonate 0-0.8%; polymer enhancer 0-1.5%; silicone powder 0-1.5%; sodium lignosulfonate 0.1-0.3%. The enhancer effectively combines the advantages of sulphoaluminate cement and Portland cement, combines other components, has the characteristics of rapid setting and fast early strength development, can regulate soil strength, meets the requirements of compressive strength and durability in engineering construction, shortens the construction period, and meets the demand of 4-6h rapid traffic under the scene of emergency repair.

The application relates to a preparation method of a corn straw-based cellulose skeleton with a core-shell structure and belongs to the field of cellulose skeleton preparation methods. In order to solve the technical problem that the inherent defects of cellulose make the mechanical performance of the cellulose skeleton extracted from straw weak in the current treatment process, the following method is adopted: firstly, the stem pith is subjected to hydrothermal treatment; secondly, delignification treatment is carried out, and the cellulose skeleton is preserved in a solvent; thirdly, the cellulose skeleton is soaked in a replacement liquid, then frozen, and then continuously subjected to freeze drying. Alternatively, the corn stem pith after the hydrothermal treatment in the first step is directly subjected to high-temperature drying in an oven. The application adopts a surface densification process to make the hydrogen bond combination on the surface of the cellulose skeleton, so that a highly directional macroscopic core-shell structure straw cellulose skeleton from the micro-macro is formed. The application is used for preparing a corn straw-based cellulose skeleton with a core-shell structure.

The utility model discloses a bridge pier column and bridge deck slab maintenance water spraying device, and relates to the field of bridge engineering. The bridge pier column and bridge deck slab maintenance water spraying device comprises a spraying unit and a lifting unit, the lifting unit is used for driving the spraying unit to move up and down, and an operation unit is arranged below the lifting unit. The spraying unit comprises a spraying directional wheel set and a spraying pipe, the spraying pipe is installed on the spraying directional wheel set in a surrounding mode, and the spraying directional wheel set is used for driving the spraying pipe to move; the lifting unit comprises a telescopic arm and a cross arm, the two ends of the telescopic arm are connected with the two spraying directional wheel sets respectively, and the cross arm is arranged at the top end of the telescopic arm. According to the bridge pier column and bridge deck slab maintenance water spraying device, through the arrangement of the lifting unit and the spraying unit, concrete spraying on the bridge pier column is uniform, and the problem that due to uneven spraying, the strength of the concrete on the strength yin-yang face and the position where spraying is not in place is slowly increased is solved.