755results about How to "Low operation and maintenance costs" patented technology

The grating type pneumatic triphase fluidizing comprehensive absorption tower includes one housing, one gas inlet channel and gas outlet channel in the top of the tower, one rotary defogging and dewatering unit, one stuffing assembly comprising support boards, hold-down boards and stuffing, one coaxial tubular grating member, one liquid distributor with ring sprinkler pipe, one large caliber reverse sprayer inside the gas inlet channel, and one absorbing slurry pond in the bottom of the tower. It features the special grating structure, the regularly arranged stuffing for cyclic fluidizing, the combined foam absorption and stuffing absorption, etc, and has high absorption efficiency, great gas treating amount and other advantages.

The invention relates to an efficient burning furnace with a rotary fluidization grate. The burning furnace with the rotary fluidization grate consists of a feeding system, a burning system and a slagging system; moreover, a waste heat boiler and a flue gas treatment system are connected with the burning furnace to form a complete garbage burning and generating system. The feeding system consists of a feeding hopper, a pre-drying conveying device, an aggregate bin, a chute and a charge distributor. The feeding hopper is a receiving opening for feeding garbage into the burning furnace and is arranged in a garbage storage pit close to one side of the burning furnace. An outlet of the feeding hopper is connected with an inlet of the pre-drying conveying device. A material level switch is arranged in the feeding hopper, and gives an alarm to prompt an operator to feed materials when the material level is lower than a set value so as to ensure that the hopper is not empty. The outlet of the hopper can be selectively provided with a feeding device. The burning furnace has the advantages of high burning speed, high burning efficiency, high slag burning degree, easy control, lower energy consumption, low pollution, low cost and investment conservation, and is applicable to domestic garbage with low thermal value and high moisture; and the garbage does not need to be pretreated.

The invention relates to a comprehensive automation integrated protecting method and a system which adopt an integrated IED to carry out automation functions such as protection, measurement and control, computation and the like of all bay units in a substation; state quantity, analog quantity and digital quantity which are output in interval by primary equipment on a process layer of the substation are respectively uploaded to the integrated IED through an ethernet switcher by a dual Ethernet (100mega/1000mega), and the protection and automation function of the substation are realized by calculating and processing the state quantity, analog quantity and digital quantity which are output in interval respectively by the integrated IED, therefore, a spacing layer and a substation layer of the substation are unified into one layer according to IEC61850 standard, and a plurality of IEDs are integrated into one integrated protecting IED, and two same integrated IEDs are provided for hot spare for improving the reliability. The comprehensive automation integrated protecting system leads the substation integrated protecting functions to share a uniform information platform, and communication network is used for replacing control cables, thus improving the reliability of the signal transmission, further improving automation and management level and reducing comprehensive construction cost.

The invention provides a trackless positioning navigation method and device. According to the method, the moving distance of a robot in a moving direction between adjacent time points (t-1) and t and the turning rate of the robot on a horizontal plane are measured, a position predication value of the robot is calculated through a preset dead reckoning equation and the measured moving distance and turning rate, local feature information in laser data obtained by measurement of a laser sensor is extracted and fused into a unified global feature map by the SLAM (Simultaneous Localization And Mapping) technology, and the processes of estimating the position of the robot and generating a topological graph are achieved, so that the positioning navigation stability and reliability are improved on the basis of reducing the cost and the operation and maintenance expenses, and the moving needs of the robot in a natural environment are met.

The invention relates to an in-situ digitization method and a device of primary equipment of a substation; the in-situ digitalizer is arranged in each gap of the primary equipment on a spacing layer of the substation; the in-situ digitalizer respectively collects the status quantity such as a switch and a disconnecting link and the like in the same gap to convert into GOOSE format message, and respectively collects mutual inductor digital quantity and analog quantity information in the same gap to convert into sampling value transport format message, and the information processed by the in-situ digitization is sent out to a local area network in a process layer of the substation; the local area network in the process layer receives the GOOSE format message for converting into the open-closed operation control of the switch and the disconnecting link. The in-situ digitization method and the device thereof of the substation share the information in a uniform information platform, and the communication network is used for replacing control cables, thus being convenient for the design, construction, extension-construction of the substation, improving the reliability, further improving automation and management level and reducing comprehensive construction cost.

The invention relates to an ultra-wide frequency band multi-band array antenna which comprises a metal reflection plate, a low-frequency radiation unit and a high-frequency radiation unit. The low-frequency radiation unit and the high-frequency radiation unit are mounted on the metal reflection plate, the low-frequency radiation unit works on a low-frequency band, and the high-frequency radiation unit works on a high-frequency band. The low-frequency radiation unit comprises two low-frequency oscillators which are both in +/-45-degree polarization and are mounted in a mutually orthogonal mode, the two low-frequency oscillators are connected with a feed network, and a +/-45-degree polarization far field radiation directional diagram is generated; the high-frequency radiation unit comprises two high-frequency oscillators which are both in +/-45-degree polarization and are mounted in a mutually orthogonal mode. The multi-band array antenna is capable of covering a 694-960 MHz ultra-wide frequency band and a 1710-2690 MHz ultra-wide frequency band and is simple in structure so as to be compatible with all frequency bands of a current mobile communication network.

The disclosure relates to a goods management method, device and system. The goods management system comprises a human body induction device, a goods cabinet, a goods identity recognition device, a payment device and a central controller, wherein the human body induction device is arranged in a shopping zone and is used for determining whether any user is in the shopping zone, the goods cabinet is arranged in the shopping zone and is used for displaying and selling goods, the good identity recognition device is used for identifying goods being sold, and the payment device is used for the user to make payments; the central controller is used for managing and controlling the human body induction device, the goods cabinet, the goods identity recognition device and the payment device that are all connected with the central controller. Via use of the goods management method, device and system, convenient unmanned self-help shopping can be realized.

The invention discloses an integrated water treatment method of ultrafiltration membrane coagulation/ biological reactor and a device thereof. The invention, the coagulation, and the biological reaction is combined and completed in a same reaction cell. Raw water enters the ultrafiltration membrane coagulation/ biological reactor; activated sludge microorganism in the reactor biologically degrades ammonia nitrogen and organic matters with low molecular weight in the water; a coagulant adding system adds coagulant and adsorbent in the reactor to remove the organic matters with high molecular weight and phosphorus; at last, the immersion ultrafiltration membrane components arranged in the reactor carries out the solid-liquid separation to prepare drinking water with excellent quality. A perforated aeration pipe is arranged on the lower part of the reactor to be connected with a sludge discharge pip to discharge the residual sludge in the reactor regularly. In order to ensure the membrane flux, a membrane reverse washing system carries out the reverse washing for the ultrafiltration membrane components regularly. The invention combines the coagulation effect and the biological effect with the ultrafiltration physical interception effect so that the manufacturing cost and the operation cost are remarkably reduced, while the invention is a novel advanced purification process of the drinking water with the advantages of high efficiency, energy saving, convenient maintenance and management.

The invention relates to a multi-frequency-band array antenna compact in structure. The multi-frequency-band array antenna comprises a metal reflective board, a low-frequency radiation unit working in low frequency bands and a high-frequency radiation unit working in high frequency bands, and the low-frequency radiation unit and the high-frequency radiation unit are arranged on the metal reflective board. The low-frequency radiation unit and the high-frequency radiation unit are arranged on the metal reflective board in a nested mode, and the orthographic projection of the low-frequency radiation unit and the orthographic projection of the high-frequency radiation unit do not coincide. The low-frequency radiation unit is formed by connecting a horizontal vibrator and a vertical vibrator with a power divider feed network and is flexible in structure, and a distance and other parameters can be flexibly configured according to practical application requirements. Due to the adoption of the structure, circuit network losses are few, the radiation characteristic stability of the multi-frequency-band array antenna within an ultra wide band range can be maintained, 2G, 3G and 4G LTE systems in mobile communication are compatible, the number of antennas used in a base station can be reduced, station distribution cost can be lowered, and operation and maintenance cost can also be lowered.

A treatment method and a treatment system of tail gas from glyoxylic acid production by nitric acid oxidation of glyoxal belong to the fields of environmental protection, energy saving and consumption reduction. The method comprises the following steps: introducing air to oxidize NO in tail gas generated by nitric acid oxidation of glyoxal into NO2; performing six-grade water absorption continuously to absorb gas of NOx and HCl in the tail gas; absorbing the tail gas after six-grade water absorption by a NaOH or Na2CO3 solution to remove residual NO2 and HCl gas and to generate an alkaline solution containing NaNO3, NaNO2, and trace NaCl; discharging the treated tail gas by an induced draft fan; performing neutralization, concentration, crystallization, centrifugation and separation of the generated alkaline solution to obtain a mixed sodium salt containing NaNO3, NaNO2, and trace NaCl, returning the mixed sodium salt to an oxidation vessel to be used as a catalyst for recycle. The treatment system comprises: an oxidation reaction vessel, water absorbing towers from grade one to grade six, a seventh grade alkaline solution absorbing tower, a concentration and crystallization vessel, a centrifuge, and a induced draft fan.

The invention discloses a straddle type monorail transportation rigid framework system, and relates to track beams and piers in a straddle type monorail transportation system. In order to increase smooth of lines, reduce the number of monorail transportation track beam expansion joints, eliminate cast steel tension supports, reduce abrasion to rubber wheels and construction cost, and prolong service life of vehicles, the straddle type monorail transportation rigid framework system is designed. The straddle type monorail transportation rigid framework system is composed in a multi-connected rigid frame bridge mode, a rigid frame bridge is formed by connecting concrete track beams which are prefabricated by a workshop on pier bent cap top surfaces through wet joints in a simple support into continuous method, the track beams are prefabricated by the workshop, adjacent two-connected rigid frame bridges are connected through seamless expansion joints or joint plates or plate type rubber expansion joints, and seamlessness of the straddle type monorail transportation lines is achieved.

The invention relates to the mechanical field, and provides an analogue driving examination system. The system comprises an automobile driving simulator. The automobile driving simulator is in connection with a virtual reality helmet, and comprises a computer host which is in connection with a wireless communication module, wherein the virtual reality helmet comprises a signal processing module and a display device which are in connection; the signal processing module is in connection with a wireless transmit-receive module matching the wireless communication module. The system combines the virtual reality helmet and the automobile driving simulator, and provides lifelike feeling for students.

The invention relates to a flue gas waste heat recovery and negative energy consumption dust-removal system for an electric stove, comprising a first flue gas dust-removal and waste heat recovery system for the electric stove which is connected with the smoke hole of the electric stove to absorb high temperature flue gas generated by the electric stove during smelting phase and a secondary flue gas dust-removal system for the electric stove which is in charge of absorbing the flue gas generated by the electric stove during charging and tapping phase. The first flue gas dust-removal and waste heat recovery system for the electric stove comprises a water cooling travelling tube, an evaporation cooling device, a high temperature resistant dust remover, a waste heat boiler, a dust removal fan and a chimney; wherein the evaporation cooling device replaces the original water cooling flue gas path and combustor. The secondary flue gas dust-removal system for the electric stove comprises a collecting cover, a dust remover worked at normal temperature, a dust removal fan and a chimney. The invention is high in dust removal efficiency and high in vapor recovery rate, saves a first cooling device and a secondary cooling device, reduces device investment and maintenance charge and prolongs the service life of the filter pocket of the dust remover.

The invention relates to a method for treating organic wastes by anaerobic fermentation, in particular to a method for producing biogas by performing union fermentation on livestock and poultry excrements, sludge from urban sewage treatment factories and organic garbage. The method comprises the following steps of: smashing the organic garbage; putting the smashed organic garbage into a comprehensive pretreatment pool and mixing the smashed organic garbage with the sludge from the urban sewage treatment factories and the livestock and poultry excrements; diluting the mixed materials to form suspension containing 8 to 12 percent of solids by using the sewage in a farm; and ensuring that the pretreated material meets the material feeding requirement of an anaerobic reactor and enters the anaerobic reactor through a material feeding pump and a pipeline to perform fermentation. The biogas produced by fermentation can be directly used as fuel gases for warming or cooking in treatment factories and surrounding farmers after being purified; the residual part is used for generating electricity for self-use or surfing the Internet by an biogas generator unit; biogas liquid and biogas residues are used as organic fertilizers and returned to farm land. By the technique, the scale of construction of the biogas engineering becomes larger, and unit investment and running maintenance cost are reduced by over 10 percent. Compared with the output of biogas produced by separate fermentation of the sludge or livestock and poultry excrements, the output of the biogas produced by the method is obviously enhanced.

The invention discloses an advanced purification method for drinking water and a device thereof. The advanced purification process for drinking water is explored aiming at generally existing micro-polluted source water and the process combines a biological activated carbon filter and an ultrafiltration membrane biological reactor to purify the drinking water in an advanced way. After the raw water being treated enters the biological activated filter first, the particulate matters in the water being partly intercepted; pollutants like organic matters and ammonia nitrogen and so on are partly degraded and the water quality is purified to some degree; load of the ultrafiltration membrane biological reactor is reduced; the water in the filter is discharged into the ultrafiltration membrane biological reactor; the activated sludge in the reactor biologically treats the water from the filter and the pollutants ammonia nitrogen and the organic matters in the water are degraded again; at last, the water after two-level biodegradation is drawn form ultrafiltration membrane component by a draw-suck pump and the remarkable effect of removal of particulate matters as well as interception of two insects, daphnia, red worms, alga, bacteria and even virus of the ultrafiltration membrane can be brought into play.Therefore, the safe and clean drinking water with excellent quality can be prepared.

The invention relates to an original ecological pig farm and an original ecological pig breeding method. The interval between front and rear rows of piggeries of the pig farm is more than or equal to 15m; and the activity space of pigs is formed and shade trees are planted among the piggeries; each unit piggery has large ventilation and light-transmitting area; each piggery is provided with a heat-insulating sleeping area, a manure discharge area, a manure discharge hidden channel, an inner suction dirty gas pumping device, a bathing place for cooling the pigs in hot summer days, a manure collection and hazard-free treatment system and a rainwater drainage system; and the temperature of supplied drinking water in each piggery is no lower than 5 DEG C. Through the original ecological pig farm, the pigs can restore natural habits, naturally ingest food, freely bathe in the sunshine so as to reduce the stress and obviously enhance the disease resistance of the pigs; and the internal and external environments of the piggeries are clean, air is ventilated, smooth and odorless, and pathogenic microorganisms are a few, so that morbidity is reduced; and the problems of residual toxic and harmful substances in pork, and light color and poor taste of the pork can be solved, and the pork becomes more tender, fragrant, and flavorous.

The invention discloses a constant-temperature half-dry smoke purification method and system, relating to a removal method and system for sulfur oxide and dust in smoke discharged from combustion equipment. In the system, a circulating fluidized bed serves as a desulfuration reactor, quick hydration removal agent serves as desulfurizing agent, and a dry and wet combined electrostatic precipitator serves as dust removal equipment. The constant-temperature half-dry smoke purification system is characterized in that a cyclone separator is adopted to realize the material circulation of the quick hydration removal agent in a constant-temperature circulating fluidized bed reactor; the dry and wet combined electrostatic precipitator efficiently removes particles; and the wet electrostatic precipitator and the water for preparing the desulfurizing agent are reused to lower water consumption amount. The constant-temperature half-dry smoke purification system has the advantages of high desulfurization and dust removal efficiency and small system pressure loss. Compared with the wet-method desulfurization, the constant-temperature half-dry smoke purification system has the advantages of small water consumption amount and low investment and operation maintenance cost, and can be used for the smoke purification process of industrial boilers and power station boilers.

The invention relates to the technical field of laser processing, in particular to a processing method of automatic-feeding laser cutting, which comprises the following steps of 1 uncoiling a coiled material into a flat plate through an uncoiler, and leveling the coiled material uncoiled into the flat plate through a leveler; and 2 pushing the coiled material leveled in the step 1 into a laser cutting work area through an automatic feeder, and cutting and processing the coiled material into a plurality of workpieces through laser. Therefore, the processing method of the automatic-feeding laser cutting has the advantages of 1 being free of noise, vibration and greasy dirt, safe and environment-friendly; 2 being capable of randomly being cut in a suit mode, and completely cutting the material in the suit mode theoretically to achieve zero waste material; 3 saving device materials and reducing problems of investment waste and environment pollution caused by casting of large-sized devices and corresponding moulds; 4 greatly improving production efficiency and rate of finished products of relevant industries; 5 being capable of obtaining high accuracy and good quality and being wide in application range; and 6 reducing operation and maintenance costs of the devices, energy consumption and invested operation cost of large-sized coil feed lines.

The invention relates to an intelligent electronic device using transient fault information and a relay protection method. The intelligent electronic device comprises a distance-measuring/wave-recording module, a protection module and a measuring/controlling module, wherein the distance-measuring/wave-recording module is respectively in communication connection with a process layer and a station control layer through a process layer communication module and a station control layer communication module, and the protection module and the measuring/controlling module are respectively used for carrying out fault identification, line protection and fault distance-measuring/wave-recording according to transient fault information uploaded by the process layer; an effect that the modules carry out mutual communication and external communication is achieved mainly by adopting a 100 Mbps Ethernet, thereby realizing the high-speed exchange and parallel processing of data; and the protection module identifies the transient fault information such as fault direction, polarity and distance in an extremely short time after a fault occurs, and forms a pilot protection through adopting a 2-out-of-3 logic, thereby both realizing the rapid action of the protection function, and improving the reliability of the action. The intelligent electronic device and relay protection method disclosed by the invention achieve an effect of multifunction integration, and are applicable to the existing intelligent substations; and meanwhile, according to the invention, the protection performance and the distance-measuring accuracy are improved, and the device cost and the operation and maintenance costs are reduced.