53results about How to "Great economic advantage" patented technology

The invention belongs to the technical field of foundation pit supporting for high-rise buildings, in particular to a foundation pit support construction method combining horizontal rotary jet-grouting soil bolting and bore concrete piles, which includes steps: firstly, constructing water-stop mixed piles and bored concrete piles according to a preset foundation pit; and secondly, performing soil excavation and soil bolting layer by layer and section by section. The foundation pit support construction method has the advantages that the foundation pit support constructed by the method is high in deformation control performance and stability and especially applicable to projections with high requirements on foundation pit deformation, and the method is applicable to mega-area foundation pit supporting in soft soil areas with failure of using internal support structures, limited slope reduction conditions and excavation depth limited within 15m, and meets the requirement that development and utilization of urban underground space continue to develop.

The invention discloses a temporary water retaining apparatus for rapidly handling the problem of water and mud bursting in a tunnel. The apparatus is provided with a water bag which is used for filling the inside with water for blocking gushing water or projecting mud soil generated in case of seepage in the tunnel and an air bag which is used for inflating air inwards for blocking the gushing water or the projecting mud soil generated in case of the seepage in the tunnel, and the water bag and the air bag are connected in an end-to-end manner and are connected through a flange connecting mechanism. The end, which is away from the air bag, of the water bag is respectively provided with a water filling port, a water pressure alarm for detecting water pressure inside the water bag and giving an alarm, and a front anchoring joint is disposed at the center for connection with an anchor pole or a fixation facility inside the tunnel. The end, which is close to the water bag, of the air bag is respectively provided with a gas injection port and a gas pressure alarm used for detecting gas pressure inside the air bag and giving an alarm, and a rear anchoring joint for connection with the anchor pole or the fixation facility in the tunnel is arranged at the center of the end, which is away from the water bag, of the air bag. The rubber bag capsule provided by the invention is simple in structure, convenient to manufacture and easy to operate, and can realize reutilization.

The invention provides a preparation method of a catalyst and a preparation method of ethanolamine, and relates to a catalyst for directly producing a downstream organic amine product from glycol by an ammonification reaction and a preparation method. The preparation method of the catalyst comprises the following steps: a sodium type mordenite molecular sieve is produced into a hydrogen type molecular sieve by ion exchange, acidic modification of the hydrogen type molecular sieve is carried out, and the modified hydrogen type molecular sieve and pseudo-boehmite powder are mixed. The invention also discloses a catalyst for catalyzing ammonification of glycol. The invention also discloses a preparation method of ethanolamine, and comprises ethanolamine prepared with the catalyst for catalyzing ammonification of glycol. The process route is short, the product selectivity is high, and method has economic advantages.

The invention discloses a steel wheel type road roller and a rolling wheel thereof. The rolling wheel comprises an outer steel wheel, an inner steel wheel and at least two spokes, wherein the outer steel wheel and the inner steel wheel are coaxially arranged; the spokes are connected between the outer steel wheel and the inner steel wheel. According to the rolling wheel, a storing space formed by the outer steel wheel, the inner steel wheel and the spokes is fully utilized and filled with filling materials such as liquid or granular solids; the overall operation is convenient and quick; the model and tonnage of the road roller can be simply and conveniently adjusted; compared with a traditional manner of adding a balancing weight to a loading device, the aforementioned manner of filling the filling materials has the advantages that the added filling materials can directly act on a compressing object, the weight increasing effect is obvious, and the usage amount can be accurately controlled after the density, storing space and volume of the filling materials are known; the filling materials with flowability are low in cost by being compared with the steel and other expensive materials, so that the economic advantage is great.

The invention discloses a high-maturity-over-maturity shale gas content evaluation method based on alkane carbon isotope inversion. The method is suitable for a high-maturation-over-maturation shale and comprises the following steps: carrying out a shale core on-site desorption experiment of a typical shale gas well in a block, and determining the shale gas content; separating out two alkanes in the desorbed gas, measuring carbon isotopes of the two alkanes, calculating a carbon isotope difference value of the two alkanes, and then establishing a fitting formula between the carbon isotope difference value of the two alkanes and the shale gas content; collecting well mouth gas or desorption gas of adjacent wells or adjacent block shale gas wells, measuring isotopes of the two alkanes, and substituting the isotopes into a fitting formula to calculate the shale gas content. The method has the advantages that the principle is reliable, the influence of the rock core is avoided, the implementation cost is low, the accuracy of shale gas content evaluation can be effectively improved, particularly, when a thick shale layer section is developed, great economic advantages can be achieved, and the method has the characteristics of being easy to popularize and convenient to implement.

The invention discloses a method for treating wastewater by coupling advanced oxidation of persulfate and biological sulfate reduction. The method comprises: 1) mixing organic wastewater, an iron-based catalyst and a persulfate in a reactor 1, and carrying out an advanced oxidation reaction; 2) adding the effluent of the step 1), and the used iron-based catalyst to a reactor 2 containing sulfate reducing bacteria, mixing with an organic carbon source, and carrying out a sulfate reduction reaction; and 3) carrying out a reducing reaction on the sulfide generated by the sulfate reduction reaction in the reactor 2, and the iron-based catalyst used in the step 1) to obtain a regenerated iron-based catalyst, carrying out magnetic separation on the regenerated iron-based catalyst, and returningto the reactor 1 so as to be recycled. According to the present invention, the catalytic-biochemical coupling treatment of the difficultly-degraded organic wastewater and the regeneration and recycling of the catalyst are achieved so as to increase the recycling efficiency of the catalyst, reduce the cost, reduce the biological toxicity of the advanced oxidation intermediate, improve the effluentwater quality, and reduce the environmental risk.

The invention discloses a stay cable device for a kilometric cable stayed bridge, which comprises a first stay cable and a second stay cable which are located at the same cable position. The first stay cable is made of steel, and the second stay cable is made of a carbon fiber reinforced composite material; and two ends of the first stay cable and the second stay cable are fixedly connected with a bridge structure respectively by an anchor device. The stay cable device can effectively improve the mechanical property of the kilometric cable stayed bridge and reduce the cost. Meanwhile, the invention also discloses a mounting method for the stay cable device, which comprises the following steps: step 10) determining a section area proportion of the stay cable of the first stay cable and the second stay cable; step 20) determining a cable tension force of the first stay cable and a cable tension force of the second stay cable; step 30) anchoring the first stay cable and the second stay cable on the bridge; and step 40) arranging a connecting device between the first stay cable and the second stay cable. The mounting method can greatly reduce the self weight of hybrid cables and reduce a sag effect.

A device for measuring elasticity modulus of a rubber material comprises a base, dial indicators and a flat plate; the dial indicators are separately fixedly arranged at two ends of the lower surfaceof the flat plate; a test piece is arranged on the base; the flat plate is placed on the upper surface of the test piece; and the lower ends of the dial indicators are abutted to the base. The flat plate and the dial indicators can be fixed together quite well by nuts, and moreover, disassembling is facilitated; and pressure is applied by weights, because the weights are standard pieces, the applied pressure can be calculated quite rapidly, the stress of the rubber test piece can also be calculated quite rapidly, and the calculating efficiency is improved to a great extent.

The invention relates to the field of treatment of a black and odorous water body, in particular to a bottom floating mud dosing aeration device. The bottom floating mud dosing aeration device comprises a main body support with adjustable height, the main body support comprises a supporting rack, an aeration part and a dosing part are arranged on the supporting rack, a first connection part on themain body support is communicated with the aeration part and an exterior aeration pipe, and a second connection part on the main body support is communicated between the dosing part and an exterior dosing pipe. By the adoption of the scheme, release of nitrogen and phosphorous nutritive salt and various pollutants in the bottom mud can be inhibited in the treatment process of the black and odorous water body, and the reoxygenation efficiency of the water body is improved.

The invention relates to a flame-retardant waterproof mixture for high-voltage cable joints and a preparation method thereof. The flame-retardant waterproof mixture is prepared from a component A anda component B, wherein the component A is prepared from the following components in parts by mass: 5 to 25 parts of crosslinking agent and 5 to 25 parts of flame retardant I; the component B is prepared from the following components in parts by mass: 20 to 50 parts of hydroxy grease, 1 to 10 parts of flame retardant II, 1 to 20 parts of flame retardant III, 10 to 40 parts of flame retardant IV, and 0.01 to 0.1 part of catalyst. The component A and the component B are used in a matching way. The invention further provides a preparation method of the flame-retardant waterproof mixture for high-voltage cable joints. The preparation method has the advantages of easiness in operation, short preparation period, low requirements for operation conditions, and easiness in control. The prepared waterproof mixture has the advantages of superior waterproof performance, electric insulating performance and mechanical performance and ultrahigh flame retarding property.

The invention discloses an application of a marinobacterium in preparation of polyhydroxyalkanoate. The marinobacterium is applied to the preparation of polyhydroxyalkanoate. The invention further provides a method for preparing the polyhydroxyalkanoate. The method comprises the following steps that the marinobacterium is fermented and cultured by using a culture medium containing a carbon source to obtain a fermentation product; and the polyhydroxyalkanoate is obtained from the fermentation product. According to the application of a marinobacterium in preparation of the polyhydroxyalkanoate and the method, volatile fatty acid can be used as a carbon source for rapid growth and accumulation of polyhydroxyalkanoate. The volatile fatty acid is used as a carbon source, so that the fermentation cost of the polyhydroxyalkanoate is reduced, and great economic advantages and good industrial application prospects are achieved.

The invention provides a building-integrated electrode heating and heat storage device. The device comprises a boiler body which is directly combined with a building and used for containing a large amount of water. The boiler body is installed under the building and comprises an outer wall, a waterproof and thermal-insulating shell, a water inlet and a water outlet, wherein the water inlet and the water outlet are connected with a building heat supply pipeline system. A control device, a heating device, a water supplementing device and a water pump are arranged above the boiler body, wherein the heating device, the water supplementing device and the water pump are connected with the control device, the heating device comprises a heating electrode, and the water pump is installed in the building heat supply pipeline system. The device is combined with a small and medium-sized floor, free space in the underground part of the small and medium-sized floor is used as a heating and heat storage device body, heating is carried out in the floor directly, a part of heat is stored, and therefore heat loss is reduced; moreover, off-peak electricity is utilized, so that the device is economical; by the adoption of area dispersion type heat supply, the device is simple in structure, quiet and environmentally friendly.

The invention is suitable for a rural residential unit type in a desert environment. In the rural residential unit type which is suitable for desert climate conditions and can be extended, by taking a frame structure as a foundation, altogether 12 square units with the side length of 3.9m in three rows in the horizontal direction and four columns in the vertical direction are planned within an area of horizontal length of 15.6m multiplied by vertical width of 11.7m, wherein two side-by-side units are shade sheds for semi-outdoor activities and are the core of the residential unit type for extension, and the rural residential unit type can be continually extended by surrounding the extension core along with the changes in family structures: a three-member family pattern, a two-generation nuclear family pattern, a two-generation extended family pattern, a three-generation extended family pattern and a final pattern of the extended residential unit type. All units except the shade sheds can respectively form a bedroom, a living room, a kitchen, a washroom or a hallway according to the needs; and the adjacent units can be separate or can be opened up to form a unified large space, andthe functions can be changed over among the units. The novel rural residential unit type provided by the invention meets the varied choices of families constituted by different people at different periods under the guidance of a modulus system.

The invention discloses a wind generator set electric control cabinet and a decondensation control method thereof. The method comprises the following steps: obtaining power-off time difference of an electric control cabinet and temperature value in the electric control cabinet after the power-on initialization of an electric control system is completed; judging whether to carry out decondensation heating control according to the obtained power-off time difference of the electric control cabinet and the temperature value in the electric control cabinet; determining the decondensation heating time of the electric control cabinet if the decondensation heating control is carried out; and controlling a heater in the electric control cabinet to continuously heat according to the determined decondensation heating time of the electric control cabinet. Through the wind generator set electric control cabinet and the decondensation control method thereof, the problem that devices in the electric control cabinet are short-circuited after the electric control cabinet is powered on because of condensation which is easily generated when the electric control cabinet of the wind generator set such as offshore wind power and the like is powered off in high-temperature and high-humidity environment can be solved; and the cost of an electric control system is not increased.

The invention discloses a method for preparing theaflavin from exogenous enzyme and a product prepared by the method. The method comprises the following steps: washing agricultural products rich in polyphenol oxidase, airing the agricultural products, and performing freezing wall breaking treatment; crushing the agricultural products subjected to freezing and wall breaking treatment to obtain exogenous enzymes; the method comprises the following steps: adding exogenous enzyme into a tea polyphenol product, adding ethyl acetate to form a multiphase fermentation system, and carrying out aerobic fermentation to obtain a fermentation product; taking fermentation liquor from the fermentation product, drying to obtain a theaflavin crude product, and separating and purifying the theaflavin crude product by using macroporous resin and an organic roll type nanofiltration membrane to obtain the high-content theaflavin. In a multi-phase fermentation system, polyphenol oxidase is dissolved in water but not dissolved in ester, tea polyphenol and catechin are dissolved out from a solid phase by water, then extracted into an ester phase, catalyzed into theaflavin substances on the surface of exogenous enzyme, and then extracted into the ester phase to form a stable theaflavin ester phase solution. The polyphenol oxidase provided by agricultural products is wide in source, and exogenous polyphenol oxidase can be obtained throughout the year.

The invention provides a preparation method of a Cu/SiO2 catalyst modified by Na salt and application of the preparation method. The catalyst obtained by the preparation method can significantly improve the selectivity of cyclopropane in propylene epoxidation reaction, and the catalyst cost is low. The preparation method comprises the following steps that (1) a carrier is acidified, specifically,SiO2 is placed into an inorganic acid aqueous solution, condensing and refluxing are conducted for 6-48 h, then filtering and washing are conducted to be neutral, and drying is conducted; (2) a Cu/SiO2 sample is prepared, specifically, a precursor compound of Cu is dissolved in water, the acidified SiO2 solid is added, stirred and mixed, then a precipitant aqueous solution is added dropwise into the mixture, a mixed system is subjected to precipitation reaction at 70-130 DEG C, the obtain solid sample is washed to be neutral, and the Cu/SiO2 sample is obtained after drying; and (3) the Cu/SiO2sample is placed into an aqueous solution of a Na salt accelerant, stirring is conducted for 0.5-5 h at 20-60 DEG C, then evaporating is conducted to be dry, and then drying is conducted.

The invention discloses an efficient thermal-insulation ultralow-density polyurethane foam and a preparation method thereof. The efficient thermal-insulation ultralow-density polyurethane foam comprises the following raw materials: polyether polyol, polyester polyol, flake graphite, water, a curing agent, a foaming agent and an emulsifier, wherein the mass ratio of the emulsifier to the total mass of other raw materials is 1.15-1.35. The polyurethane foam prepared by the invention has the advantages of better compression strength and dimensional stability, uniform density distribution, good fluidity and the like.