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 invention relates to an integrated heat-supply and energy-saving system comprising a heat source, a heat-supply pipe network, a heat-supply control system, a pipe network balancing system and a waste heat recovering system, wherein the heat source is used for generating heat; the heat-supply control system is used for detecting indoor temperature to provide temperature parameters for weather compensation, monitoring the indoor temperature of users on line in real time and regulating the on/off of a relevant boiler, a circulating pump, an air conditioner, a ground source heat pump and a valve according to outdoor temperature and the indoor temperature of the users to control the heat-supply quantities of the heat users with different heat-supply properties, thereby realizing the automatic switching of anti-freezing running and heat supply; the pipe network balancing system is used for controlling each branch pipe to run by the set flow according to the branch pipe flows preset in one step, thereby improving the water pressure of the pipe network; and the waste heat recovering system is used for recovering energy for secondary application to reduce the heat loss of the heat-supply system. The integrated heat-supply and energy-saving system can automatically and intelligently control heat supply according to the heat-supply properties of the heat users, improve heat-supply quality, fully recycle waste heat at the tail end of the pipe network and carry out real-time on-line monitoring to the temperature of the pipe network.

The invention provides a method for designing the heat storage capacity and the heating power of an electric heating system, comprising the steps of determining the daily wind curtailment power of a wind farm in the heat supply period, designing the heat supply power and the heat storage capacity of the electric heating system, and designing the heating power of the electric heating system. The heating power of the electric heating system is designed according to the wind curtailment power curve of the wind farm, and abandoned wind power can be utilized to the maximum; the heat storage capacity of the electric heating system designed by the invention takes into consideration the scenario with least wind curtailment of the wind farm, and the quality of heat supply can be ensured under the condition that abandoned wind power is utilized to the maximum; and the heat storage capacity and the heating power of the electric heating system designed by the invention are minimized under the condition of ensuring the quality of heat supply, and the investment cost of the electric heating system is reduced.

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 water-cooling air-conditioner system for ships. The water-cooling air-conditioner system comprises a compressor, a condenser and an evaporator, wherein the condenser is used for seawater heat exchange, and the evaporator is arranged inside a ship compartment or a storage cabinet. The water-cooling air-conditioner system further comprises a first temperature sensor, an electric heater and a controller, wherein the first temperature sensor is used for detecting the water inlet temperature Ta of a water inlet of the condenser, the electric heater is arranged inside the ship compartment or the storage cabinet, and the controller controls the compressor to stop running and controls the electric heater to be started when the Ta is smaller than T1 on the heating condition. According to the water-cooling air-conditioner system, the phenomenon that low-voltage protection appears repeatedly on the system is effectively avoided, so that the air-conditioner system supplies heat into the ship compartment and the storage cabinet continuously; the compressor is made to stop running in time when at low temperature, so that the risk that the heat exchanger is split due to frosting and the compressor is burnt out is effectively lowered. The invention further discloses a control method for the water-cooling air-conditioner system for ships.

The invention relates to a heat exchange station multi-mode regulation and control method based on load prediction. The method comprises the following steps: (1) load prediction calculation: (11) selection of judgment conditions; (12) theoretically calculating the thermal load; (13) selecting big data to calculate the thermal load; (2) the debugging method: (21) first-network electric valve control; and (22) second-network circulating pump control. The heat exchange station multi-mode regulation and control method based on load prediction has the following beneficial effects that 1, through multi-level correction and big data calculation of theoretical calculation, a more accurate heat load can be calculated, and in actual operation, the heat supply quality is guaranteed, and unnecessary energy consumption is reduced; and 2, multiple modes can meet the requirements of different field conditions, can be used for multiple heat exchange stations, and have wide applicability and stronger application capability.

The invention discloses a heat supply coal consumption online determination method suitable for a high-back-pressure cascade heat supply unit; a univariate analysis method of fixed intermediate discharge steam extraction flow or operation back pressure is adopted to obtain a heat supply coal consumption result of the high-back-pressure cascade heat supply unit through on-site adjustment of unit operation parameters. According to the determination method provided by the invention, on-site determination working conditions are divided according to operation ranges of operation back pressure, electric power and heat supply return water temperature of a specific unit in a high-back-pressure cascade heat supply mode, so that a heat supply coal consumption database of the high-back-pressure cascade heat supply unit under different electric power, heat supply return water temperature and operation back pressure is obtained; production personnel of a power supply plant adjust the operation back pressure and the intermediate exhaust steam extraction flow according to the external heat supply network circulating water flow and the heat supply return water temperature change, and the minimum heat supply coal consumption is achieved under the condition that the heat supply quality is guaranteed.

The invention discloses a solar large plane plate heating system with the auxiliary energy. The solar large plane plate heating system includes a plane plate heat collecting device, a gas wall-mountedfurnace, a heat exchanger, a hot water storage box, a reflux pool, a plurality of circulating pumps and a control valve; the heat collecting device is connected to a water inlet of the heat exchangerthrough a second control valve, the second circulating pump and the third circulating pump, the second circulating pump and the third circulating pump are connected in parallel and connected with thesecond control valve in series, and a water outlet of the heat exchanger is connected with one end of the hot water storage box through a fourth valve and connected with the other end of the hot water storage box through a third valve and a fifth valve; and the water outlet of the heat exchanger is connected with a heat user through the third valve, a sixth valve, the fourth circulating pump andthe fifth circulating pump, wherein the fourth circulating pump and the fifth circulating pump are connected in parallel, and the gas wall-mounted furnace is connected with the heat user through a seventh valve, a eighth valve, the fourth circulating pump and the fifth circulating pump, wherein the seventh valve and the eighth valve are connected in parallel. The solar large plane plate heating system is simple in structure, fast and convenient to operate, the multiple modes are adopted for joint control, the clean energy is fully used under the premise of ensuring the quality of heating, andthe solar large plane plate heating system can adapt to the heating environment of many complicated working conditions.

The invention provides an intelligent and efficient heat supply network operation adjusting method which comprises the steps of 1, conducting hydraulic adjustment on a secondary network, so that the hydraulic balance of the secondary network is achieved; 2, on the basis of the hydraulic balance of the secondary network, conducting hydraulic adjustment on a primary network, so that the hydraulic balance of the primary network is achieved; 3, on the basis of the hydraulic balance of the heat supply network side, respectively conducting thermal adjustment on the heat supply initial station and all heat exchange stations, so that the thermal balance is achieved; and 4, on the basis of the hydraulic and thermal balance of the heat supply network side, predicting a heat load of the heat supply network side, optimizing the configuration of the heat source side according to the prediction result of the heat load of the heat supply network side, and adaptively adjusting the output of the heat source side to realize the cooperative adjustment between the network and the source. According to the intelligent and efficient heat supply network operation adjusting method provided by the invention, adjustment difficulty caused by strong coupling and large lagging of a heat supply network can be effectively relieved, the hydraulic adjustment work efficiency is greatly improved, the overall dispatching coordination capacity of the heat supply system is improved, heat insufficiency or excess of the heat supply system is avoided, heat supply of the heat supply system according to needs is achieved, and on the premise that the heat supply quality is guaranteed, heat supply energy consumption is reduced, and the survival pressure of heat supply enterprises is reduced.

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 discloses an exhaust steam waste heat circulating system. The exhaust steam waste heat circulating system comprises a condensing type cogeneration unit, a back pressure type cogenerationunit, an energy separation device, a heat supply network unit and a control device, wherein a steam inlet of the back pressure type cogeneration unit is connected with a steam outlet of the condensing type cogeneration unit; the energy separation device is provided with a steam inlet, a cold end outlet and a hot end outlet, and the steam inlet is connected with the steam outlet; a first heat exchanger is connected with the cold end outlet, a second heat exchanger is connected with the hot end outlet and the steam outlet of the back pressure type cogeneration unit, and the first heat exchangerand the second heat exchanger are both connected with the condensing type cogeneration unit; and the control device is configured to control the back pressure type cogeneration unit to switch betweena direct circulation mode and an adjustable heating mode. The exhaust steam waste heat circulating system is simple in structure, can be accurately adjusted under different heat load conditions, andachieves stable adjustment of heat supply quantity and stable supply of power supply quantity.

The invention discloses a raw coal push-pull type coal hopper sampling device and a coal storage system, comprising a sampling channel arranged in the middle of the coal storage device, the upper and lower end surfaces of the sampling channel are respectively provided with upper and lower sealing plates, and the upper sealing plate There is a gap in the middle of the plate, which can make the coal sample fall; there is a guide rail between the upper and lower sealing plates, and a sampling box is movable on the guide rail, and the sampling box moves along the guide rail between the upper and lower sealing plates, so that the falling coal The sample is delivered to the outside of the sampling channel. The invention ensures that when the device is in operation state, the raw coal will not blow out of the sampling bag uncontrollably, which greatly improves the working environment of sampling.