38results about How to "Meet the requirements of economy" patented technology

The invention provides an automobile dual-mass hydraulic torque converter which belongs to the technical field of machinery and solves the technical problem that the traditional hydraulic torque converter easily causes sympathetic vibration between an engine and a speed variator. The automobile dual-mass hydraulic torque converter is arranged between the engine and the speed variator and comprises a first-mass flywheel assembly and a second-mass hydraulic torque converter, wherein an elastic damping mechanism which can reduce the sympathetic vibration is arranged between the first-mass flywheel assembly and the second-mass hydraulic torque converter. The invention has the advantages of long service life and lower cost and can effectively reduce the sympathetic vibration between the engineand the speed variator.

The invention belongs to the technical field of hydroelectric and hydraulic engineering hydraulic structures, and particularly provides a high elastic die cushion type composite dam. The composite dam comprises a concrete face plate, a cushion layer area, a transition area, an upstream major stone pile area and a downstream minor stone pile area, wherein the concrete face plate, the cushion layer area, the transition area, the upstream major stone pile area and the downstream minor stone pile area are sequentially arranged from an upstream region to a downstream region; a high toe wall area is arranged at the bottom of the concrete face plate, the bottom of the cushion layer area and the bottom of the transition area; a lower compression area is arranged at the bottom of the upstream major stone pile area and the bottom of the downstream minor stone pile area; the lower compression area is arranged at the downstream position of the high toe wall area and below the crest level of the high toe wall area. The high toe wall area and the lower compression area are arranged, so that transformation and stress of a dam body and the concrete face plate are reduced, the standards of stone pile dams with 200 m level face plates are reached, and the technology for stone pile dams with 300 m level face plates is feasible, economical and safe.

The invention discloses a tailings disposing and filling method and belongs to the field of tailings utilization and disposal. The method includes: grading tailing pulp to obtain fine-particle tailings pulp and coarse-particle tailings; dewatering the fine-particle tailings pulp and the coarse-particle tailings pulp respectively according to application to obtain fine-particle tailings and fine aggregate and coarse-particle tailings for granulation, mortar and dry-mixed mortar; sintering the fine-particle tailings at high temperature, and adding a binding material into the coarse-particle tailings for granulation, mortar and dry-mixed mortar to obtain coarse aggregate, a mortar material and a dry-mixed mortar material; mixing the coarse aggregate and the fine aggregate, conveying the samedown into a well through a filling well, conveying the mortar material down into the well through a filling pipe, mixing, and then filling; conveying the dry-mixed mortar material down into the well to be mixed with pipe flushing water to prepare a dry-mixed mortar material mixture, mixing the mixture with the aggregate, and filling. By the method, treating and hardening time of the filling material can be shortened, strength of a filled body can be enhanced, downhole operation conditions can be improved, and pollution of underground environment can be reduced.

The invention discloses an in-situ repair device and method for polluted water. The in-situ repair device is characterized by comprising a microbial treatment system and a plant repair system arranged above the microbial treatment system, wherein the microbial treatment system mainly consists of a microbial reaction tank, a floating box, a drainage pump, suspended filler, an air hose, a fan, an aerating head and an automatic water inlet valve. The plant repair system comprises a plant fixing layer and a functional plant fixed on the plant fixing layer. The invention further discloses a method for purifying a water body by using the in-situ repair device for polluted water. According to the invneiton, the purpose of in-situ repair of the polluted water by means of microorganisms which degrade pollutants in water and plants which absorb element such as nitrogen and phosphorus in water is realized.

The invention discloses a cement-stabilized anti-crack base layer newly-built pavement structure and a construction method and application thereof. The pavement structure sequentially comprises an asphalt concrete upper surface layer, an asphalt concrete lower surface layer, a cement-stabilized anti-crack base layer and a cement-stabilized subbase layer from top to bottom, wherein the cement-stabilized anti-crack base layer is made of an anti-crack cement-stabilized macadam mixture and mainly comprises cement, large-particle macadam and small-size aggregate, the cement-stabilized anti-crack base layer adopts a road mixing construction mode after on-site layer paving, it is guaranteed that the large-particle macadam makes full contact to form main frameworks, and the small-size aggregate evenly fills gaps between the frameworks. According to the cement-stabilized anti-crack base layer newly-built pavement structure, reflection cracks of a semi-rigid base asphalt pavement structure are reduced, so that various disease problems caused by expansion and penetration of the reflection cracks of a traditional semi-rigid base asphalt pavement structure are solved, various diseases caused byexpansion and penetration of the reflection cracks of the pavement structure are reduced, and the purpose of prolonging the service life of the pavement structure is achieved.

The invention discloses an environment economic dispatching two-level dispatching solution method including centralized charging stations, and establishes a two-level environment economic dispatching model including the centralized charging station. In the upper model, the minimization of unit total cost is taken as the objective function, the particle swarm optimization algorithm is adopted to optimize the total output power of the centralized charging stations and the thermal power units as a whole at each time, the output power of each unit at each time is optimally dispatched by means of comprehensive sensitivity. In the lower model, the network loss optimization is taken the objective function, the output power of each centralized charging station at each time is optimally distributed by means of network loss sensitivity. The unit total cost and the network total loss are calculated based on the solved output power of each unit and each centralized charging station at each time. The problem that when an economic dispatching problem is solved, the dimension is large and the time is long can be solved; and meanwhile, the method meets the economic requirement and reduces the network loss of a whole electric power system.

The invention relates to a pure electric vehicle double-motor automatic transmission control system and a control method thereof and relates to the field of electric vehicle control, the control system comprises a control unit, a sensor detection signal module, a switch selection signal module, an execution control module, a fault display module, a double-motor module and a transmission case module, high-speed digital signal processing chip DSPTM320F28335 can be used to perform real-time control, double-motor automatic transmission control is also used to enable switching of four driving modes, the dynamic performance and economy of an electric vehicle are improved, three-parameter law of accelerator pedal opening change rate, vehicle speed and climbing slope angle is used to make a control strategy for automatic transmission and torque shifting and hill starting, and the problems of insufficient hill power and low maximum speed are solved.

The invention discloses a rock stratum shield tunnel end reinforcing structure and a rock stratum shield tunnel end reinforcing method. According to the reinforcing structure, a row of grouting anchor rods are arranged at the front end of an enclosing structure; grouting is performed through the grouting anchor rods. The reinforcing method comprises the following steps: firstly, formulating a construction process flow; secondly, performing specific construction processes: firstly, performing drilling construction; secondly, performing construction of bamboo bar grouting anchor rods; thirdly, performing the construction of breaking a slot wall. The rock stratum shield tunnel end reinforcing structure and the rock stratum shield tunnel end reinforcing method have the beneficial effects that the rock stratum shield tunnel end reinforcing structure can be dug and removed; the whole sections of rod bodies are anchored; anchoring and grouting are combined. The strength is high; the weight is light; the safety is high; the advantages of preventing static electricity, resisting to low temperature and the like meet the requirements of safe production of underground engineering. The economical efficiency is that the construction cost can be greatly reduced.

The invention discloses diatomite-coal ash-silica fume modified permeable cement concrete, and belongs to the technical field of concrete. Per cubic meter of the diatomite-coal ash-silica fume modified permeable cement concrete is prepared from the raw materials: 1514 kg of coarse aggregate, 364-435 kg of cement, 12-37 kg of coal ash, 12-25 kg of silica fume, 12-37 kg of diatomite, 136-142 kg of water and 1.8-2.2 kg of water reducer. According to the permeable concrete, the diatomite, the coal ash and the silica fume are used for replacing part of cement as a cementing material, under conditions of not reducing the permeability performance, the strength of the permeable concrete is improved, the compressive strength of the permeable concrete reaches 30 MPa, the rupture strength reaches 5 MPa, a permeation coefficient reaches 4.0 mm/s, and the permeable concrete can be widely used for pavement structures of parks, sidewalks, light transportation and the like; the coal ash and the silicafume are industrial waste residues, the natural diatomite contains many impurities, the development cost is high, by applying the natural diatomite to the permeable concrete, not only can waste utilization be achieved, but also the production cost of the permeable concrete can be reduced, and the economic benefits are improved.

The invention discloses a soft soil foundation reinforcing structure under a high embankment. The structure comprises a ground beam which is arranged on a foundation and of which the top surface is flush with the surface of the foundation, side pile sets which are located below the two sides of the foundation respectively and are in rigid connection with the ground beam, and a middle pile set which is arranged in the middle of the foundation and located between the two side pile sets. A bearing plate is arranged at the top of the middle pile set, and a mattress layer is arranged between the bearing plate and the top of the middle pile set. A cushion layer is arranged between the top of each side pile set and an embankment. The structure is high in integrity, good in stability and easy to machine and manufacture, the manufacturing cost is saved, and the problem that under the action of high embankment loads, side piles in the composite foundation are prone to bending resistance weakening firstly and gradually lose strength under the action of transverse loads, so that composite foundation pile bodies are damaged successively, and consequently the whole roadbed is unstable is effectively solved. Meanwhile, the problems that the vertical bearing capacity safety reserve of the side piles is too high and the total settlement of the embankment center is relatively large due to the fact that high-strength piles are arranged at equal intervals in the embankment slope and the embankment center are solved.

The invention discloses a connection joint structure of a steel column supported by steel beams, and relates to the field of constructional engineering. The connection joint structure of the steel column supported by the steel beams has reasonable force and force transferring. According to the technical scheme, the connection joint structure of the steel column supported by the steel beams comprises a main beam, secondary beams and the steel column, two sides of the main beam are separately in rigid connection with the secondary beams, the main beam and the secondary beams are crossed and arranged horizontally, the top surface of the main beam at the crossed position is connected with the steel column, a column base bottom plate is arranged at the lower end of the steel column, the columnbase bottom plate is in rigid connection with the top surface of the main beam, and the steel column is vertically arranged. According to the connection joint structure of the steel column supported by the steel beams, column base counterforce of the steel column can be well transferred to the steel beams, so that force of the steel beam is reasonable, and the requirements of a space structure aremet; and meanwhile, the stability of a connection joint is enhanced, the size of sections of the steel beams can be reasonably selected according to the practical situation, and the economic requirements are met.

The invention discloses an electric power system safety and stability emergency control method based on a two-stage remedial strategy, and belongs to the field of electric power system safety and stability control. A safety and stability sensitivity comprehensive factor and a control cost calculation formula of a control measure are added into the control strategy table designing to meet the requirement for safety and stability optimizing control. Under the condition that a control order is not actually executed, a control station selects an optimizing control measure from the control measure space of the control station in an iteration mode to carry out the remedy control in a precedence mode, and a last-level collaborative defense control station of the control station selects the optimizing control measure in the control measure space of the collaborative defense control station to carry out the remedy control; under the condition that the control station does not have the control measure, the last-level collaborative defense control station selects the optimizing control measure to implement the remedy control, and therefore the two-stage remedy control according to the non-implementation of the control order and the insufficient single-control station control measure is achieved. The reliability of the safety and stability emergency control can be effectively enhanced.

The invention relates to an all-welded corrugated pipe type pressurizing oil tank adopting a non-contact sensor. The all-welded corrugated pipe type pressurizing oil tank adopting the non-contact sensor comprises an oil tank shell, a rear end cover, a corrugated pipe, a guide sleeve, a magnet, a non-contact displacement sensor and an inflation valve, wherein the corrugated pipe is connected with the rear end cover and the guide sleeve provided with the magnet in a welding manner so as to be arranged in the shell, so that a gas-liquid separation structure is formed jointly; the non-contact displacement sensor is installed on the outer side face of the oil tank shell; and the inflation valve and an oil inlet and outlet are located at the front end of the rear end cover and the front end of the shell respectively. According to the all-welded corrugated pipe type pressurizing oil tank adopting the non-contact sensor provided by the invention, due to the fact that the non-contact displacement sensor is adopted, on the basis that cost is reduced, a sealing device needed by a traditional contact displacement sensor is omitted, the structure of the oil tank is reduced, the weight of the oil tank is reduced, meanwhile, the leakage problem caused by long-time use of the sealing device is avoided, and the service life is prolonged, so that the all-welded corrugated pipe type pressurizing oil tank adopting the non-contact sensor is more economical and efficient; and the guide sleeve is in contact and clearance fit with the inner wall of the shell, so that friction damping generated when the corrugated pipe stretches out and draws back is reduced, and pressure compensation response is rapid.

The invention discloses a method for increasing hydrogen cyanamide yield by utilizing an ultrasonic dispersion device. The method comprises the following steps: milling raw materials calcium carbide,fluorite and calcium oxide into powder by a ball mill, placing into a nitriding furnace and reacting in a nitrogen atmosphere; adopting an ultrasonic dispersing meter for dispersing the molten substance; preparing a hydrogen cyanamide aqueous solution under the action of water and carbon dioxide; using the ultrasonic dispersing meter for dispersing the solution system, filtering and separating, thereby acquiring the hydrogen cyanamide solution. According to the invention, ultrasonic wave is added for assisting reaction in the reaction process and the vibration for ultrasonic cavitation is utilized to smash the calcium cyanamide participating in the reaction into micron-scale and even nanoscale powder, so that the solid-liquid contact area is increased. Meanwhile, the carbon dioxide foams are more fine, dispersed and uniform and the gas-liquid contact area is increased, so that the converting use ratio of the calcium cyanamide raw material is increased, the purity and yield of the end product are increased and the method meets the requirements of atom economy.

The invention discloses a system and a method for heating heat supply network circulating water by using series heat supply network heaters. The system comprises a steam turbine steam extraction system and a series heat supply network heater system. The steam turbine steam extraction system comprises a steam turbine high-pressure cylinder, a steam turbine intermediate-pressure cylinder and a steam turbine low-pressure cylinder which are coaxially connected, as well as a low-pressure steam extraction pipeline, an intermediate-pressure steam extraction pipeline and a high-pressure steam extraction pipeline. The series heat supply network heater system comprises three heat supply network heaters, three heat supply network heater drainage pipelines, a heat supply network circulating water inlet pipeline, a heat supply network circulating water return pipeline, a heat supply network circulating water pump, a heat supply network circulating water pump executing mechanism and a heat consumer. On the one hand, the water supply temperature of the heat supply network can be changed within a larger range, the adaptability of unit heat supply is improved, on the other hand, by inputting the first heat supply network heater, the second heat supply network heater and the third heat supply network heater step by step, further close connection of heat loads and electric loads can be achieved, and the economical efficiency of a steam turbine unit is improved.