333results about How to "Improve heating quality" patented technology

A cell controller controls the operation of a transport robot to keep a substrate belonging to a succeeding lot carried into a heating part in the fourth transport cycle from being transported out of the heating part in the next or fifth transport cycle, thereby preventing interference between the transport of substrates belonging to the succeeding lot and the transport of substrates belonging to a preceding lot. If interference is likely to occur between the transport of the substrates belonging to the succeeding lot and the transport of the substrates belonging to the preceding lot, the cell controller causes the substrates belonging to the succeeding lot not to be transported but to remain in processing units. This allows the transport of the substrates belonging to the succeeding lot in consideration of only the next transport cycle.

The invention discloses a lightweight high-strength heat-insulation refractory castable. The castable comprises the following raw materials by weight: 30 to 40% of lightweight mullite aggregate, 5 to 10% of an aluminum-rich spinel hollow sphere, 5 to 8% of andalusite, 6 to 9% of aluminum-rich spinel powder, 5 to 7% of kyanite powder, 5 to 8% of silicon powder, 5 to 10% of rho-Al2O3 micro powder, 12 to 18% of calcium aluminate cement, 3 to 6% of a refractory fiber, 0.05 to 0.15% of sodium hexametaphosphate, 0.05 to 0.15% of an organic water reducing agent, 0.04 to 0.07% of an organosilicon coupling agent and 0.01 to 0.02% of a defoaming agent. According to the invention, the heat insulation performance of the lightweight refractory castable is guaranteed, close bonding between aggregate and powder in the refractory castable is improved, mechanical strength, capacity of resisting mechanical and thermal shock damage, anti-permeability and comprehensive usage performance at high temperature of the refractory castable are enhanced, and cost for the refractory castable is reduced, thereby finally achieving the comprehensive targets of reduction of heat loss in cooling of furnace beams and columns, prolongation of the service life of a heat insulation lining, improvement of heating quality in a furnace, reduction of energy consumption and maintenance cost, etc.

The invention relates to the technical field of optimizing a furnace temperature set value of a walking beam type heating furnace in the combustion process, in particular to a system for optimizing the optimal furnace temperature set value based on data mining. The system comprises a data processing module and a data mining analysis module. A data processing process mainly comprises the following steps: acquiring the real-time data, and acquiring the temperature, flow and related production data of each furnace section in the heating furnace; combining the acquired production data and steel billet rolling data into a data mining analysis sample object, and storing a mining result in a background database according to a certain rule model, thereby forming a rule knowledge base; and finally acquiring the optimal furnace temperature set values of different steel billets in each section of the heating furnace from the knowledge base. The system provided by the invention can be used for optimizing and setting an optimal furnace temperature set value curve of the walking beam type heating furnace. For various steel billets, the optimal control guidance can be supplied to the control system, thereby improving the combustion process of the steel billets in the heating furnace, increasing the heating quality and lowering the energy consumption of the heating furnace.

The invention provides a heating method for controlling decarburization in a heavy rail billet furnace in a heat accumulation heating mode. The heating process comprises a pre-heating section, a heating section and a soaking section. A furnace pressure measurement point is positioned at the pre-heating section; the full furnace is controlled at positive pressure; when the billet temperature is controlled to be less than 1,000 DEG C, the atmosphere in the furnace is oxidizing atmosphere, and the air consumption coefficient is between 1.05 and 1.25; and when the billet temperature is controlledto be more than or equal to 1,000 DEG C, the atmosphere in the furnace is weak reducing atmosphere, the air consumption coefficient is between 0.9 and 1.0. Aiming at the operation and decarburizationcharacteristics of the heat accumulation heating furnace different from the traditional heating furnace, the segment control method is adopted on the control aspects of atmosphere in the furnace and temperature, and a limit low-oxygen concentration burning process is realized. The method has the advantages of low heated billet surface decarburization, low oxidized burning loss, high furnace energy utilization, low pollutant discharge, low production cost and the like, is simple, convenient and feasible, and can achieve good effect of saving materials and energy at the same time of improving the heating quality of products.

The invention provides a method for recording a temperature curve in a heavy rail steel billet heating process, which comprises the following steps: acquiring and storing temperatures of a preheating section, a first heating section, a second heating section and a soaking section of a heating furnace in real time; compiling steel billet tracking numbers for heavy rail steel billets before the heavy rail steel billets enter the heating furnace; after the heavy rail steel billets enter the heating furnace, respectively tracking and storing the preheating section entry time, the first heating section entry time, the second heating section entry time and the soaking section entry time and the discharging time in real time; respectively calculating the holding time of the corresponding heavy rail steel billets at the preheating section, the first heating section, the second heating section and the soaking section; extracting real-time temperature data of each steel billet track number at the preheating section, the first heating section, the second heating section and the soaking section; and drawing and storing a temperature curve in the heating process of each section according to the real-time temperature data of the holding time at each section. In the method, the real-time temperature of the heavy rail steel billets at each section of the heating furnace is converted into the temperature curve of the heating process at each section, thereby facilitating analyzing the temperature distribution of the heavy rail steel billets in the furnace. The invention is also applicable to coal gas flow and pressure alarming.

The invention comprises a charging device, a drying belt driving device and a vacuum plant. The charging device includes a charger mixer, a dosage pot and a single-screw pump mounted one by one. The drying belt driving device is disposed in an enclosed vacuum chamber and has several layers of drying belts with the driving device inside. The vacuum plant includes a vacuum distributor and vacuum pipelines.

A temperature on-line measuring method for a plate blank in the production process of a heating furnace relates to the technical field of temperature online detection of the plate blank in the heating furnace. The temperature online measuring method comprises the following steps: establishing a plate blank temperature soft measurement model of a least squares support vector by using history data; optimizing parameters of an LS-SVM (Least Squares Support Vector Machine) plate blank temperature soft measurement model by adopting a particle swarm optimization algorithm; and after the model is established, calculating the temperature of the plate blank in real time. According to the temperature online measuring method disclosed by the invention, the temperature of the plate blank can be obtained in real time at high precision; high calculation speed and high calculation precision are obtained; the requirement of online production can be met; and the aim of improving the control stability is achieved; the temperature online measuring method can be operated on line to help operators learn about the heating condition of the plate blank in the furnace, thereby guiding the adjustment of the heating system, improving the heating quality and reducing energy consumption; the temperature online measuring method is wide in application range and can be used for determining the temperature of the plate blank or a plate coil in other complex industrial processes by properly modifying a data source; and the temperature online measuring method can conveniently share information with other links and brings convenience to providing reference information for the operation of other links.

The invention discloses a porous medium burner material. The porous medium burner material comprises ceramic powder, a binding agent, a dispersing agent and a suspending agent, wherein the ceramic powder consists of the following components in percentage by weight: 15 to 40 percent of zirconite powder, 30 to 50 percent of fine mullite powder, 5 to 10 percent of fine zirconium oxide powder, 10 to 20 percent of soft clay, 5 to 10 percent of active aluminum oxide powder and 1 to 5 percent of silicon dioxide micro powder; the binding agent is 30 to 45 percent based on the total weight of the ceramic powder; the dispersing agent is 0.1 to 0.5 percent based on the total weight of the ceramic powder; the suspending agent is 0.2 to 1.0 percent based on the total weight of the ceramic powder; and the particle size of the fine powder is not greater than 250 meshes. The preparation method of the porous medium burner material comprises the following steps of: preprocessing organic foamed plastic; performing ball-milling on the ceramic powder, the additional binding agent, an additive and a proper amount of water; adding an antifoaming agent into the mixture, performing ball milling to obtain uniform paste, and controlling the viscosity to be 1 to 5Pa.s; soaking the preprocessed organic foamed plastic in the paste; repeating the processes for several times until the required density is achieved; removing the excessive paste to obtain the porous biscuit; naturally drying the porous biscuit at the room temperature; drying the biscuit in a drying box of over 90 DEG C to control the moisture to be less than or equal to 1.0 weight percent; and firing the biscuit in a kiln to obtain the porous medium.

The invention discloses a real-time heating load control method based on environmental parameter compensation. The method comprises the steps that heating load prediction is performed, specifically, aheating load prediction method based on a time sequence is adopted, and a heating system load is predicted; environmental parameter recognition and compensation are performed, specifically, environmental parameters serve as disturbance, and a feedforward compensation loop is arranged so as to eliminate influences of environmental parameter changes on a heating temperature; and prediction controlis performed, specifically, prediction control is adopted, operation is performed according to predicted load demands, and control and regulation operations are performed on a great-inertia heating load system in advance. Compared with the prior art, prediction control is adopted to control the load of a heating system, and the feedforward compensation loop is designed to eliminate the influencesof environmental parameter fluctuation on heating; and the control effect is good, certain disturbance rejection capability is achieved, and the heating quality is effectively improved.

The invention discloses a method for setting a high temperature gas nozzle in a convection type glass plate heating furnace, and also discloses the convection type glass plate heating furnace designed according to the method. In the invention, all gas nozzles on a whole heating work surface in a furnace chamber are divided into units arranged in matrix, and the temperature of the gas ejected by the nozzle of each unit and/or the gas ejection amount are enabled to be adjustable and the regional control of the high temperature gas convection heating in the furnace chamber is realized; only a cell corresponding to the size of a glass plate can be started to work when a small glass plate is processed, thereby avoiding the waste of energy; and the heating uniformity of the whole glass plate can be ensured by respectively adjusting the heat of different parts of the glass plate applied by each unit when a glass plate with a bigger size is processed, thus the property of the heating furnace is greatly improved, and the technical support is provided for improving the heating quality of the glass plate and reducing the glass processing cost.

The invention relates to a high back pressure coupling large temperature difference heating supply system for an air cooling unit and an operation method, and belongs to the technical field of combined heat and power generation energy conservation. The high back pressure coupling large temperature difference heating supply system for the air cooling unit comprises a combined heat and power generation unit, a heating network origin station and a secondary heat exchanging station, the combined heat and power generation unit comprises a turbine, an air cooling island and a back pressure condenser, the heating network origin station comprises a heater for heating networks and a hydrophobic heat exchanger, and the secondary heat exchanging station comprises a hot water type absorbed type heat pump and a water-water heat exchanger. The back pressure condenser, the hydrophobic heat exchanger, the heater for the heating networks, the absorbed type heat pump and the water-water heat exchanger are sequentially mounted on a primary network water pipe loop, corresponding valves are opened or closed to realize primary network-water side switching connection in series and in parallel of the backpressure condenser and the hydrophobic heat exchanger and secondary network-water side switching connection in series and in parallel of the hot water type absorbed type heat pump and the water-waterheat exchanger. According to the high back pressure coupling large temperature difference heating supply system for the air cooling unit and the operation method, stepped warming and heating of primary network-water and secondary network-water is realized, the irreversible loss in the heat exchanging process is effectively reduced, and higher practical application value is achieved.

Based on big data analysis and energy balance principles, the invention provides a thermoelectric load optimization scheduling system for multiple sets of gas-steam combined cycle units. The system obtains and uploads operating parameters of the gas-steam combined cycle unit measured and uploaded by field measurement instruments from a power plant DCS system; analyzes the operation parameters to obtain an actual operation trend curve of the equipment; combines the thermal demand and the power generation load demand as the total energy demand of the unit; the method aims at minimizing the totalconsumption of natural gas, thermal power and power generation load requirements of the thermal power plant are optimally distributed in all units through an optimization method, and the purposes that under the condition that the same thermal power and power generation load conditions are met, the comprehensive energy consumption of power generation and heat supply of the thermal power plant is the lowest, and the energy efficiency level is the optimal can be achieved. The system can effectively guide operating personnel to reasonably adjust the operating state, meet the production requirement, improve the heat supply quality, reduce the operating cost, achieve economic operation and improve the overall operating benefit of the thermal power plant.

The invention provides a microwave oven which comprises an oven cavity, a first stirring device and a second stirring device, wherein a microwave-transmitting hole is formed in a rear plate of the oven cavity; the first stirring device is fixed below the bottom plate of the oven cavity; microwaves enter the oven cavity after being stirred by the first stirring device; the second stirring device is fixed on the rear plate and positioned on the rear side of the rear plate; stirring blades of the second stirring device are made of microwave-proof materials; turbulent microwave holes are formed in the stirring blades; microwaves can penetrate through the microwave-transmitting hole and are reflected back into the oven cavity after being stirred by the stirring blades. According to the microwave oven provided by the invention, microwaves can be effectively stirred and reflected through rotating stirring blades, when passing through the wave-transmitting hole, the microwaves in the oven irradiate to the second stirring device to be stirred by stirring blades and then reflected back into the oven cavity, so that microwaves in the oven cavity can be distributed more uniformly, the heating efficiency and the heating quality of food in the microwave oven can be improved, the usage performance of the product can be improved, and the microwave oven is more competitive in market.

The invention provides an aerodynamic heating furnace. An impeller is located in a furnace body. A guide plate is installed in the furnace body through a guide plate support and is fixed to the inner surface of a rear wall plate of the furnace body. Two surfaces, adjacent to the impeller, of the guide plate are spaced. An air inlet hole is formed in the center of the guide plate, and the air inlet hole and the center of the impeller are concentric. A plurality of airflow holes are evenly distributed in the circumference of an annular impeller support. The sum of the sectional areas of the airflow holes is 1-2 times the circumference area of the impeller. A guide edge protruding in the axial direction is arranged on the outer circumference of the guide plate and the guide edge faces towards an inner wall of the furnace body. Turbulence is increased by the right-angled guide edge and heating uniformity and the heating depth are improved by the right-angle guide edge. According to the aerodynamic heating furnace, wind energy is used as a heating medium, the impeller is driven by a motor, so that the wind energy is converted into thermal energy, high-uniformity of a temperature field is achieved through flowing of the wind energy, heating elements such as a heating tube can be omitted, the number of parts used for keeping the uniformity of the temperature field is reduced, the number of partial high temperature points is reduced, the furnace body heat capacity is reduced, the number of furnace body heat bridges is reduced, and therefore the purposes that energy consumption is reduced and the energy-saving effect is achieved are achieved.

The invention belongs to the technical field of urban central heating, in particular to an energy-saving and emission-reducing regulation and control method for urban central heating. On the premise that a frequency converter pump is installed first for flow control, the regulation and control method adopts the following technical measures: 1) limiting the fluctuation range of the temperature in a boiler furnace to less than 20 DEG C and ensuring that the temperature of the inlet and outlet water of the boiler is a rated temperature of between 60 and 130 DEG C; 2) adopting 'high flow and small temperature difference' for a pipeline system, wherein in the pipeline at user end, the flow is 1.1 to 1.25 times as much as calculated circulating flow, and the temperature difference is reduced by one fifth to one third; and 3) separately heating according to the functions of buildings, quantitatively predicating the change of heating load, and regulating heating according to an optimal regulating method. The regulation and control method has the advantages of realizing the regulation of the temperature of conventional heat source outlet water, regulating system temperature and flow, effectively improving heating quality and reducing the energy consumption of unit area.

The invention relates to an improvement of a wear resistant steel ball heat treatment heating furnace, and concretely relates to an annular heating furnace with a rotary furnace bottom. The annular heating furnace is provided with a furnace body, feeding and discharging ports, combustors, a maintenance furnace gate and a smoke outlet; and the bottom of the furnace body is respectively provided with a rotary driving mechanism, a lateral positioning mechanism and a support raceway; a hearth has an annular structure, the bottom of the hearth is a water seal tank provided with a furnace bottom, and the furnace bottom is composed of a heat insulation panel, a skirt rim sealing plate, a structural support, a tooth ring, an annular rail surface and a baffle ring. The problems of large labor intensity of an operator, low work efficiency, large hidden safety trouble, unstable heating quality and high energy consumption per unit output of present wear resistant steel ball quenching treatment heating furnace with inclined-bottom hearths are solved, and present wear resistant steel ball heat treatment heating furnaces are mainly improved in the invention.

The invention belongs to the technical field of production of hot rolling strip steel, and in particular relates to a hot rolling heating method for a low-carbon aluminum killed steel casting blank. The invention aims to solve the technical problem of providing a hot rolling heating method for the low-carbon aluminum killed steel casting blank, and the hot rolling heating method has low heating temperature and short heating time. To solve the technical problem, the invention uses the technical scheme that the temperature of a preheating section of a heating furnace is 1050-1150 DEG C, the temperature of a heating section is 1185-1230 DEG C, the temperature of a holding section is 1160-1200 DEG C, and the heating time of the heating furnace is 135-147min. By adopting the method of the invention for heating the low-carbon aluminum killed steel casting blank, the uniformity of the heating temperature of the low-carbon aluminum killed steel can be improved, the rolling process requirement is met, the heating temperature of the low-carbon aluminum killed steel casting blank is reduced by 40 DEG C averagely, low temperature heating is realized, the heating time is reduced by 10 minutes averagely, the yield and the heating quality of the heating furnace are improved, the fuel consumption of the heating furnace is reduced, and the comprehensive effects of increasing yield, guaranteeing quality, saving energy and reducing consumption are obtained.

The invention relates to a heat supply network balance control system. The technical problems that hydraulic imbalance is not completely solved and interfere of outdoor temperature changes exists aresolved. The heat supply network balance control system comprises a site device, a first upper computer and a whole network balance module connected with the site device and the first upper computer sequentially through a communication network and a data bus, and the whole network balance module is arranged in a server located in a second upper computer. The site device comprises a first sensor, anelectric valve, a distributed variable frequency pump, a second sensor, a circulating water pump, a water complementing system and a field controller, wherein the first sensor, the electric valve andthe distributed variable frequency pump are arranged on a primary network; the second sensor, the circulating water pump and the water complementing system are disposed on a secondary network; and the field controller is used for controlling the electric valve, the distributed variable frequency pump and the water complementing system. The first sensor and the second sensor each include an outdoor temperature sensor. Through the technical scheme, the problem is solved well, and the heat supply network balance control system can be used for heat supply network balance control of centralized heating.