32results about How to "Ensure heating quality" patented technology

The invention discloses a dynamic climate compensation method for centralized heating. Firstly, the outdoor temperature is predicted, water supply and return temperatures are adjusted some time ahead according to the predicted value of the outdoor temperature, and the hysteresis of pipe network adjustment in the manner that adjustment is performed while sampling is overcome. The outdoor temperature of the next day is predicted according to local historical meteorological data and weather forecast of the meteorological department, and the value is used as basic data for prediction of a thermal load; and then the thermal load is predicted, that is, the thermal load curve of the next day is calculated according to the outdoor temperature. With the method, the outdoor temperature is reasonably predicted so as to realize advanced dynamic adjustment of a climate compensator; heating medium parameters of a heating system are adjusted by the aid of an adjusting model according to the thermal load value set in advance, a heat source is changed from original wide passive heating into active heating, on the premise that the indoor temperature for the user is stable, the operation adjusting indictor of the heating system within the specified time are given in advance, the heating efficiency is improved, and the heating energy consumption is reduced.

The patent of the present invention discloses a coordinated scheduling method of thermoelectric power in an integrated energy system based on a district heating network. First, a district heating network model including nodes and hot water pipes is established. The model includes scheduling constraints and temperature correction equations, and then builds the The optimal coordinated dispatching model of the integrated energy system based on the district heating network, according to the initial temperature of the water flow in the water supply and return water pipe network, solve the optimal coordinated dispatching model, obtain the mass flow of hot water in the pipe network, and use the mass flow as input to solve The temperature correction equations are used to obtain the actual mass flow temperature, set the allowable error of the mass flow temperature, calculate the temperature difference between the actual mass flow temperature and the initial temperature, and propose an iterative solution strategy for the optimal coordination scheduling model. Based on the analysis, an effective method to ensure convergence is proposed, which can quickly respond to load changes, realize the flexible distribution of heat load among integrated energy systems based on district heating networks, and ensure the heating quality and system flexibility.

The invention discloses a triple-network joint control intelligent heating device and method based on big data collection, analysis and processing. The heating device includes an intelligent management and control platform, a database server, a communication server, a WEB server, a heat source control station, and a heat network control station. And heat user control station, intelligent management and control platform, database server, communication server, WEB server, heat source control station, heat network control station and heat user control station are connected through industrial Ethernet, the method is: Step 1, setting The control interval of temperature; Step 2, collecting the indoor temperature value of thermal users; Step 3, calculating the indoor average temperature Tpi; Step 4, calculating the indoor average temperature under the jurisdiction of the single network control station; Step 5, calculating the indoor temperature data of all thermal users; Step 6, calculate the indoor temperature data of all thermal users in the database server; Step 7, achieve the balanced control of the three networks. Beneficial effects: the pipe network balance of the heating system is ensured, and the safety of the system is guaranteed.

The invention discloses a heat balance control method for a central heating system. Firstly, it is judged whether the central heating system needs heat balance control, and then the heat balance control is performed; The station is equipped with a set of heat exchange station automatic control system. The centralized control center predicts the heat load for the next 24 hours, and predicts the target value Ts of the water supply temperature on the secondary side of heat exchange. The key to balance control is to correct the target value Tn of water supply temperature on the secondary side of the heat exchange station, and the controller of the heat exchange station reduces the opening degree K of the regulating valve under the new Tn. The control logic designed by this method is adjusted accordingly based on different working conditions to ensure the balanced control of heat in the central heating system, so that all end users can obtain balanced heat supply, and ultimately ensure the heat supply quality of the entire heating system.

The invention discloses a thermoelectricity cogeneration unit fast variable load control method based on a thermoelectric load conversion model, and belongs to the technical field of thermal power generating unit variable load control. The method is a control strategy combining heat supply and steam extraction adjustment with a traditional coordination control strategy, the load change in a varying duty early stage is mainly borne by the heat supply and steam extraction flow adjustment, the heat supply extraction flow begins to be reversely adjusted until an initial value is restored along with the gradual development of the adjusting action of a fuel amount; at a variable load control last stage, the control effect of the heat supply extraction flow adjustment on the load gradually disappears, and the load change is completely adjusted by the fuel amount; and through the combination with the heat supply and steam extraction heat storage adjustment and the machine furnace coordination,the response time of the system from the initial stage, the response speed of an intermediate transition stage and the adjustment precision of the final stabilization stage are both improved and optimized. According to the method, the operation safety of the unit can be ensured, the variable load characteristic of the unit can be improved, and the method plays an important role in access of a novel energy source and the improvement of the stability of a power grid.

The invention discloses a thermal station circulating pump optimization adjustment method. The thermal station circulating pump optimization adjustment method comprises the following steps that operation parameters of a pipeline on the user side are collected; the return water temperature of all units are adjusted to be consistent; a circulating pump operation characteristic curve and an operationcharacteristic curve of each frequency point of circulating pump frequency conversion are drawn according to the flow lift of each pump operating point of a circulating pump; the circulating pump characteristic curve is compared with the actual operation characteristic curve, according to the operation characteristic curve of each frequency point, a frequency interval of the circulating pump running in a high efficiency zone is obtained; and according to the frequency interval of the high efficiency zone of the circulating pump, the maximum frequency and minimum frequency of the circulating pump operation are set, the circulating pump is adjusted in the interval, and the circulating pump operates at a frequency which ensures the minimum differential pressure at the tail ends of double networks. The thermal station circulating pump optimization adjustment method can actually measure the operation characteristic curve of each frequency point under the frequency conversion control according to the operation characteristic curve of the circulating pump, and finds out the optimal working point of the circulating pump combined with a pipe network characteristic curve, so that power consumption is reduced and energy conservation and emission reduction are achieved under the premise of ensuring the heating quality.

The invention discloses a method and system for deep peak regulation of a thermal power unit, comprising: determining the heating margin value of each electric load and the critical electric load of the unit under different outdoor temperatures; The functional relationship between the heating margin and the outdoor temperature; and the functional relationship between the critical electrical load and the outdoor temperature; according to the predicted value of the outdoor temperature on the forecast day, the functional relationship between the heating margin and time of each electrical load of the unit on the forecast day is obtained by fitting ; Combined with the transmission time of the heat network, based on the functional relationship, determine the time when the unit starts to store heat to the heat network with the maximum heating capacity under the current load, and the time when the thermal power unit enters the deep peak regulation state; The operation mode of the unit is controlled. The method of the invention can realize thermal decoupling without increasing equipment investment, which can not only ensure the heating quality of the heating network but also improve the operation flexibility and economy of the thermal power unit.

The invention provides a drawer-type bilateral electromagnetic heat-generating system and belongs to the technical field of electric heating. The drawer-type bilateral electromagnetic heat-generatingsystem comprises heating water tanks, an electromagnetic coil, a drawer-type assembly, a magnetizing coil, a frequency variable ultrasonic energy converter and the like, each heating water tank is ofa flat rectangle structure, and the electromagnetic coil is arranged between the two adjacent heating water tanks. Bilateral heat generation is achieved while water electric separation is conducted, the electromagnetic heat generation area and the electromagnetic coil utilization rate are effectively increased, and electromagnetic radiation is reduced. Through the combined structure of the heatingwater tank and the drawer-type assembly, production and mounting are quite facilitated, and hotline overhaul and maintenance can be achieved. Through scale prevention of the magnetizing coil and thescale removing effect of the frequency variable ultrasonic energy converter, the service life of the system is effectively prolonged, the efficiency of the system is effectively improved, additionallythe drawer-type bilateral electromagnetic heat-generating system further has the advantages that the production cost is low, the technique is simple, capacity increasing is convenient, the size is small, the operation cost is low, the energy saving effect is remarkable, and safety and reliability are achieved, and can be widely applied to various electric heating occasions, and the energy savingand environment protection effects are effectively improved.

The invention provides a centralized heating secondary network operation adjustment method, and relates to the technical field of heat supply adjustment. The method solves the problems that according to an existing heat supply system, limitation exists in application in different degrees due to design defects, expected effects of operation adjustment are difficult to achieve, and an adopted adjustment method is complicated in structure, long in operation time, large in calculation amount and the like. According to the centralized heating secondary network operation adjustment method, a three-layer forward-direction-type neural network is combined with PID, and the return water temperature of a secondary network is automatically controlled. A set value prediction model of a centralized heating secondary network temperature control system is built through an RBF neural network, the return water temperature of the secondary network is predicted in real time through a well-trained RBF prediction model by means of five data collected on site, namely primary network supply water temperature, primary network supply water flow, outdoor temperature, secondary network supply water temperature and secondary network supply water flow, and the obtained value serves as a set value of the centralized heating secondary network temperature control system. According to the method, heating quality of the system is guaranteed through automatic control, and reasonable utilization of energy is achieved.