78results about How to "The amount of renovation work is small" patented technology

The invention discloses a method of blending combustion of fuel coal fly ash in a biomass circulating fluidized bed boiler and a device thereof. In the method, the fuel coal fly ash is jetted onto the bottom of a dense phase combustion zone bed layer inside the biomass circulating fluidized bed boiler so that the fuel coal fly ash is mixed with very hot biomass bed materials in a bubble state or a turbulent fluidized state to generate intensive heat and mass transfer and temperature increase with violent rolling and friction, thereby grinding-off ash shells on the external layer of the fuel coal fly ash to expose unburnt residual carbon black core therein, and finally the fuel coal fly ash is completely combusted in the dense phase combustion zone and a dilute phase combustion zone. The device is mainly composed of following units which are matched with the biomass circulating fluidized bed boiler: a fuel coal fly ash storage bin, a rotary material feeding device, an ejector, an air blower, a transporting pipeline and a bottom feeding abrasion resistant spray nozzle. By means of the method and the device, the fuel coal fly ash can be recycled to the biomass circulating fluidized bed boiler for fully combustion again to perform secondary power generation, thereby reducing the use amount of a biomass fuel, increasing the power generation capacity of unit fuel and meanwhile can reduce emission of coal combustion pollutant.

The invention discloses a mine cooling and heat damage utilization system. The system includes a downhole heat damage cooling and heat collection subsystem and an above-well heat damage utilization and heat supply subsystem. The downhole heat damage cooling and heat collection subsystem includes two-phase closed thermosiphon heat collecting and cooling equipment (2), a cold water heat absorbing pipeline (3), a hot water thermal-insulation pipeline (4) and a water inlet pipeline (15). The above-well heat damage utilization and heat supply subsystem includes a heat exchanger (11), a water-sourceheat pump (12), a mine drainage system (13), a heat source utilization module (14), and a water discharge pipeline (16). The system in simple in structure and practical, can well adapt to complex above-well environments and downhole environments of a mine, heat in surrounding rock of a roadway is extracted, thermal damage of surrounding rock is treated, and the environmental temperature in the roadway is effectively reduced; meanwhile heat energy of surrounding rock of the roadway is well utilized, the extracted heat energy is used for heat supplying of builds, water for bathing employees, freeze protection of wellheads and the like in the mine, above-well heat supply and energy consumption are reduced, and the system has huge economic and environment protection value.

The invention relates to a multi-loop crisscross-spanning steel pipe pole which comprises a common pole body, lower-layer loop cross arms, upper-layer loop cross arms and a ground wire cross arm. The lower-layer loop cross arms, the upper-layer loop cross arms and the ground wire cross arm are crisscross, two sides of the common pole body are respectively provided with one circuit transmission line, and the common pole body consists of four vertical steel pipes which are provided with no knick point and connected through flanges. Compared with conventional iron towers, the rigid frame steel pole structure in rigid connection with the cross arms is small in foot distance, the line corridor width is decreased, accordingly the demolition and vegetation deterioration are decreased, and resource saving and environmental protection are facilitated. A traversing tower and a spanning tower are integrated on the combined steel pipe pole, the engineering investment is saved, the power outage time is shortened, a traversing mode is simple and easily implemented in an urban area, line channels and the tower-occupied area are decreased, the overall appearance is attractive, and the multi-loop crisscross-spanning steel pipe pole meets the appearance requirement of urban power transmission lines.

The invention provides a controller for a grid-connected generating wind solar complementary street lamp system, which can combine a wind solar complementary generating system and a mains supply power grid. First, the wind solar complementary generating system supplies power to a street lamp and feeds redundant electrical energy to the mains supply power grid. When wind solar electric energy production can not meet requirements of normal work of the street lamp, the mains supply power grid supplies power to the street lamp so that mains supply is saved, and normal work of the street lamp is guaranteed. A special storage battery is not required to be configured in the wind solar complementary generating system, and cost is reduced. The controller comprises a main control chip, a wind energy direct current (DC)/DC converter connected with a wind driven generator connected with the main control chip in bi-directional mode, a luminous energy DC/DC converter connected with a photovoltaic assembly, a load DC/DC converter connected with the street lamp and a reversible alternating current (AC)/DC converter connected with the mains supply power grid. The street lamp is respectively connected with the luminous energy DC/DC converter, the wind energy DC/DC converter and the reversible AC/DC converter respectively through the load DC/DC converter.

The invention relates to an anti-falling protecting system and an anti-falling protecting method for a tower climbing operation of an electric transmission line. The anti-falling protecting system comprises a safety rope, a rope type bidirectional speed differential mechanism, spiral anti-falling foot pins, a turning anti-falling foot pin and an anti-falling self-locking device, wherein the safetyrope is used for a safety protection hook of an operator; the rope type bidirectional speed differential mechanism is arranged at the column foot of a tower for bidirectional speed differential protection of the safety rope and for forming an anti-falling self-locking protecting point; the spiral anti-falling foot pins are arranged on a tower leg and a cross arm in a spaced manner to form an anti-high-falling suspension supporting point for the operator to grab with hands and pedal with legs and for fixing the safety rope in an anti-falling manner; the turning anti-falling foot pin is used for alleviating the friction force of the safety rope during turning; and the anti-falling self-locking device can be detachably mounted on the safety rope in a sleeving manner, can operate freely alongthe safety rope and can brake in rapid movement and can be locked on the safety rope. By adopting a trackless safety protection technique, the whole tower is anti-falling all around, and the anti-falling protecting system is small in transformation quantity, low in cost and convenient to popularize and apply in a large range.

The invention provides a chimney for eliminating wet method desulfurization white smoke. The chimney comprises a chimney body; a wet flue gas discharging opening surrounding the top of the chimney body is provided with a hot air outlet channel for exhausting air upwards so that the hot air exhausted out of the hot air outlet channel can wrap the outer layer of wet flue gas air flow exhausted out of the wet flue gas discharging opening, the lower portion of the hot air outlet channel communicates with a hot air main pipeline, and the hot air main pipeline is connected with a heat source. Compared with a traditional method, the chimney has the advantages of being low in energy consumption, small in reengineering work amount investment, simple and easy to operate and reliable in effect on the aspect of eliminating emitted white smoke and stack rain of wet method desulfurization flue gas.

The invention discloses a beneficiation method for comprehensively recovering magnetite from cyanide tailings. The method includes steps of weak magnetic roughing, weak magnetic scavenging, strong magnetic roughing, strong magnetic scavenging, weak magnetic concentration, and strong magnetic concentration. The method, under the condition of less modifying a conventional beneficiation plant and achieving a low modification cost, avoids calcinations of magnetic separation tailings by means of the prior and subsequent grading and matching design of the reasonable strong and weak magnetic field, and on the premise of recovering the gold to the utmost extent, not only can ensure an iron grade, but also can greatly improve the yield and recovery rate of the magnetite, maximizes a resource value,and achieves a high commercial promotional value. The method solves the technical problem that gold and iron are simultaneously present in the ore and the cyanide leaching of gold and silver requiresvery fine feed particle size which may seriously affect the magnetic separation and recovery of iron if the feed particle size is fine to a certain extent, which makes it difficult to separate the magnetite in physical beneficiation and difficult to obtain a magnetite concentrate and a brown iron concentrate with high recovery rates and qualified iron grade contents.

The invention discloses low temperature methanol washing gas stripping regeneration methyl alcohol equipment and a utilization method thereof. The equipment is arranged between a methyl alcohol washing tower and a gas stripping regeneration tower; a purified gas outlet drain is arranged on a purified gas outlet pipeline at the top of the methyl alcohol washing tower; a downstream end of the purified gas outlet drain is communicated with the bottom of the gas stripping regeneration tower and the other end is connected with a nitrogen source. When the nitrogen source cannot provide nitrogen, the equipment enables purified gas at the top of the methyl alcohol washing tower to pass through the opening purified gas outlet drain and be reduced pressure through a reducing valve and lead to the gas lifting regeneration tower to serve as gas stripping gas to regenerate the methyl alcohol. Accordingly, under the nitrogen source fault condition, ceaseless operation of the gas lifting regeneration tower is guaranteed, continuous operation of a low temperature methanol washing step is guaranteed, an air separation device is not required to be introduced, and economic losses are reduced.

The invention provides a polylactic acid colorful long bunchy yarn, can solve the problems that in an existing polylactic acid colorful long bunchy yarn, polylactic acid fibers or yarns need to be dyed in the later period, yarns are easily hardened, and when the dyestuff with deep color is dyed, the color fastness is low, and meanwhile can further solve the problem that the production cost of thepolylactic acid colorful long bunchy yarn is high. At least two fibers in different colors are combined into a bamboo section strip at the tail, and then the bamboo section strip is spun by a spinningtechnology, all fibers are polylactic acid fibers or polylactic acid fibers and other textile fibers, and the polylactic acid fibers are polylactic acid colorful short fibers prepared by dying through a stock solution. Therefore, the invention further provides a drawing device for processing the polylactic acid colorful long bunchy yarn and a long bunchy yarn processing method.

The invention discloses a high-efficiency desulfurization absorption tower with control of empty tower partition pH values; the high-efficiency desulfurization absorption tower includes an absorption tower; the exterior of the absorption tower is provided with a high-pH-value slurry tank; the high-pH-value slurry tank and a low-pH-value slurry pool layer are connected by a valve pipeline, the high-pH-value slurry tank is provided with a limestone slurry supply pump; a high-pH-value region spray layer is arranged between a low-pH-value region spray layer and a mechanical demisting layer; the high-pH-value region spray layer and the high-pH-value slurry tank are connected by a high-pH-value circulation pipeline. Compared with the prior art, through arranging the high-pH-value slurry tank at the exterior of the absorption tower, the corresponding high-pH-value region spray layer is used for strengthening an absorption effect on SO2 in flue gas, slurry after the absorption effect is completed continues to strengthen oxidation of a neutralization reaction product calcium sulfite in the low-pH-value slurry pool layer in the absorption tower.

The invention discloses a closed purge system and method applicable to a supercritical carbon dioxide Brayton cycle. The closed purge system comprises a throttling device mounted on a turbine bypass pipeline, a particle collector, a first filter, a second filter and a targeting device, wherein the particle collector and the first filter are mounted on a high temperature side inlet pipeline of a high temperature heat regenerator; the second filter and the targeting device are mounted on an inlet pipeline of a main compressor; and a pipe section in front of a turbine main steam valve is vertically arranged, and other two pipelines connected with a tee joint which is connected with the pipe section in front of the turbine main steam valve are arranged horizontally. The invention further discloses a purge method of the system. According to the characteristics of a supercritical carbon dioxide Brayton cycle power generation system, system equipment is fully used, and the system purge function is achieved through the lowest possible engineering modification amount, adding of the fewest possible temporary equipment and little carbon dioxide working medium consumption.

The invention discloses a character overall feature-based rapid number plate verification method, which comprises the following steps of: performing number plate extraction and number plate character division on an input static color vehicle image; calculating a background field assigned value of a number plate character image, and extracting the convex and concave features of the character image; verifying number plate information to be verified by using the convex and concave features of the number plate character image to obtain a verification result of each character; and combining the verification results of the number plate characters by using a decision fusion technology, and judging the accurate of the number plate information to be verified. Direct number plate character recognition is avoided, the image is not required to be complexly preprocessed, and the method is high in recognition rate and recognition speed, and can be reliably used for vehicle identity legality identification.

The invention relates to a voltage sag prevention method of a substation terminal based on a fast mechanical switch. (1) obtaining fault records and power supply topology diagrams of sensitive users;(2) Analyzing the cause of voltage sag accident in the past period of time by combining the system operation mode of sensitive load and fault record of fault recorder, and infer that the fault point causing voltage sag is located in or outside the region; (3) Aiming at the frequent occurrence of faults and the fault point of voltage sag outside the region, a voltage sag control scheme based on fast mechanical switching is proposed to control the voltage sag at the terminal of substation. (4) Aiming at the frequent occurrence of faults and the fault point causing voltage sag is in the region, an active voltage sag prevention scheme based on fast mechanical switch is proposed to solve the problem. cost of a voltage sag treatment device in the method of the invention is low, the voltage sag treatment device is controlled and managed by a contributor power grid company, so that the treatment is easier to implement, and the method has typical guiding significance for solving the voltage sagproblem of the user side.

The invention discloses a configuration method of a river-lake water body in-situ ecological purification system. The configuration method comprises the steps that changes of the concentrations of nutritive elements in a water body flowing across terrestrial vegetational zones in different widths are analyzed; according to removal effects of the nutritive elements such as N and P, terrestrial plants with water body purification effects reaching an expected value are confirmed by comparison; nutritive substances in various water plants and nutritive substances of the water body are determined before and after the water plants are cultivated; the water plants with the water body purification effects reaching the expected value are confirmed; according to the water body purification effects, the determined terrestrial plants and water plants are mixed and configured in vertical and horizontal directions; the width, the density and the gradient of constructed vegetation of the river-lake water body in-situ ecological purification system are optimized; and the minimum width, the optimal slope and the optimal density when the water body purification effect is optimal are selected. The river-lake water body in-situ ecological purification system constructed according to the configuration method has smaller floor area; the river bank substrate gradient modification projects are reduced greatly; the investment is low; and removal rates of N and P in the water body are better.

The invention relates to an economizer hot water recirculation system applicable for a subcritical steam drum boiler generator set, and a working method thereof. The hot water recirculation system comprises an economizer, a steam drum, a drop pipe and a water supply pipe, and a water outlet of the economizer, the steam drum and the drop pipe communicate with each other in sequence; the water supply pipe communicates with an inlet of the economizer; the hot water recirculation system further comprises a No.1 electric regulating valve, a No.2 electric regulating valve, a manual shutoff valve, aNo.1 check valve, a No.2 check valve, a circulating pump, a recirculation pipe and a bypass; the recirculation pipe communicates with a lower collection box of the drop pipe, and further communicateswith an inlet collection box of the economizer at the time; the recirculation pipe is provided with the circulating pump of which the both sides are provided with the No.1 electric regulating valve and the manual shutoff valve; the circulating pump is provided with the bypass which is provided with the No.2 electric regulating valve; and the recirculation pipe is provided with the No.1 check valve, and the water supply pipe is provided with the No.2 check valve. The hot water recirculation system can be used for preventing the economizer from being dry-burnt in the start-stop process, and improving the outlet smoke temperature of the economizer under the low load condition, so that the wide load denitrification is achieved.

The invention relates to an underground construction use cooling method which cools off the underground construction by using active central air-conditioner and hot water of water-cooled condenser of dehumidifier in heat pump evaporation manner, i.e. the heat pump evaporator (water-cooled evaporator) is connected to the water-cooled condenser of the active central air-conditioner in series, and hot water is cooled by air-cooled condenser after the water-cooled evaporator completes evaporation, and the air-cooled condenser is cooled in a water spray manner, and the air outlet of the air-cooled condenser is leaded to outside of the underground construction. The invention greatly changes current air conditioner cooling scheme, and is different from current scheme in concept and system realization. The invention can resolve the problems of excessive temperature and cooling difficulty.

The invention discloses an intelligent collection method for a building power consumption amount. A data collector and metering instruments are connected. A data collection and processing system includes a central data receiving server. The central data receiving server includes a service logic processor used for arranging data information, a data mining processor used for extracting and analyzingthe data information, and a database memory used for storing the data information. The service logic processing system is interactively connected with the database memory. The data mining processor is interactively connected with all of the service logic processing system and the database memory. The data collector is connected with the central data receiving server. The method has the advantagesthat: data collection is accurate and comprehensive; and a processing result is obtained by the data mining processor through carrying out data processing and analysis on the data information after arrangement of the service logic processor.

The invention provides a water inlet structure of a flood discharge tunnel reconstructed by a diversion tunnel. The water inlet structure of the flood discharge tunnel comprises a flood discharge emptying cavity; the flood discharge cavity comprises a flood discharge cavity body and a flood discharge cavity water inlet arranged at one end of the flood discharge cavity body, and the flood dischargecavity water inlet is a vertical water inlet; and a flood discharge cavity gate is arranged on the flood discharge cavity body, and a diversion tunnel plugging concrete plug, a diversion tunnel plugging gate and a diversion tunnel water inlet are sequentially arranged on one side of the flood discharge emptying water inlet. According to the water inlet structure, a traditional horizontal water inlet is transformed into the vertical water inlet, the structure of the water inlet structure is simple, the influence on an upstream water level is relatively small during construction, so that the construction interference is reduced, the transformation amount is relatively small, the construction difficulty of reconstructing the diversion tunnel into a flood discharge tunnel inlet is reduced, and the construction progress is accelerated.

The invention discloses an intelligent power consumption collecting system for a building. The system includes a gauge, a data collector and a data collecting and processing system; the data collectoris connected with the gauge, the data collecting and processing system includes a central data receiving server, and the central data receiving server comprises a business logic processor for managing data information, a data mining processor for extracting and analyzing the data information and a database memory for storing the data information; the business logic processor is in interaction connection with the database memory; the data mining processor is in interaction connection with the business logic processor and the database memory, and the data collector is connected with the centraldata receiving server. The intelligent power consumption collecting system has the advantages that data is collected accurately and completely; the data mining processor conducts data processing andanalysis on the data information managed by the business logic processor to obtain a processing result.

The invention relates to a double-channel vortex ceramic burner (namely, the number of coal gas inlets is two and the number of air inlets is two) which is vertically installed at the upper part of a burning chamber of a hot air stove and comprises a vortex chamber 1, a throat mouth 8, coal gas inlets 4, a coal gas ring path 3, a coal gas nozzle 2, air inlets 6, an air ring path 7 and an air nozzle 5, wherein the vortex chamber 1 is positioned at a central area, and the throat mouth 8 is arranged between the vortex chamber 1 and the burning chamber; the coal gas nozzle 2 is arranged on the inner wall of the coal gas ring path 3, and two coal gas inlets 4 are arranged on the outer wall of the coal gas ring path 3; the air nozzle 5 is arranged on the inner wall of the air ring path 7; and the two air inlets 6 are arranged on the outer wall of the air ring path 7. The double-channel vortex ceramic burner can transform the top-burning hot air stove of the traditional level sleeve type burner into a vortex top-burning hot air stove under the condition that the burning chamber and the pipeline of the hot air stove is rarely transformed. The double-channel vortex ceramic burner has the characteristics of raising the hot air temperature, prolonging the service life of the hot air stove, reducing the burning consumption, and reducing the investment.