42results about How to "Does not affect power generation" patented technology

The invention relates to the technical field of wind power generation, in particular to an anti-icing wind power generator blade and a preparation process thereof, in which a PVC heat-shrinkable film is provided on the wind power generator blade to prevent the wind power generator blade from being covered with ice under low-temperature weather conditions , including PVC heat-shrinkable film base material, the surface of the PVC heat-shrinkable film base material is subjected to CF 4 After etching, it becomes a rough surface with multiple grooves and pits, and a PTFE coating is deposited on the rough surface. The grooves, pits and PTFE coating form a tight cross-linked network micro-nano surface structure, which does not require The shutdown of the wind turbine does not affect the power generation of the wind turbine, saves manpower and material resources, does not need to be energized and heated, saves a lot of electric energy, does not affect the normal operation of the wind turbine, and fundamentally reduces the icing rate of the wind turbine blades, thereby Under the premise of not damaging equipment and wasting energy, the utilization rate of wind turbines in cold seasons can be improved to ensure the power generation in winter.

The invention relates to a coal-fired unit and gas turbine combined type power generation system, and belongs to the field of combined power generation. The coal-fired unit and gas turbine combined type power generation system comprises a coal-fired unit, a gas turbine, a residual heat boiler and a water feeding heater, wherein the water feeding heater is integrated in the residual heat boiler, a high-pressure heater system of the coal-fired unit is provided with an outlet bypass, and is connected with the water feeding heater, the other end of the water feeding heater is connected with a coal-fired boiler of the coal-fired unit, a shaft seal heater of the coal-fired unit is provided with a bypass, condensate enters the residual heat boiler through the bypass, and is heated to form steam, and then the steam is supplemented into a steam turbine of the coal-fired unit. The coal-fired unit and gas turbine combined type power generation system has the advantages that the heat circulating efficiency is greatly improved, the utilization rate of energy source is improved, the coal consumption of power generation enterprises is reduced, and the energy-saving and emission-reduction purposes are realized.

The invention relates to a switch, in particular to balance type magnetic pole sudden change switchgear. The balance type magnetic pole sudden change switchgear is characterized in that a cross beam steel frame and a coil box constituting a magnetic pole sudden change switch are arranged between an outer button cover and a base; a compressed spring is arranged in the middle of the cross beam steel frame, and two ends of the cross beam steel frame are connected with symmetrical clamping seats through leaf springs; a magnet box is clamped in each clamping seat, and an upper armature, a lower armature and a magnet are arranged in the magnet box; an iron core wound with a coil is arranged in the coil box and is located between the upper armature and the lower armature in each magnet box, ball holes are formed in the upper surface of an upper cover of the coil box, and steel balls are arranged in the ball holes and in contact fit with the compressed spring on the cross beam steel frame. Two steady states of own mechanism of the balance type magnetic pole sudden change switchgear are used to represent on and off states, and the operation mode and the hand feeling are the same as those of a traditional switch; the whole circuit can work without a battery or external power supply, energy is saved, and the environment is protected; inconvenience in decoration wiring is omitted for a user, building materials are saved greatly, a decoration project is simplified, and construction waste is reduced.

The invention discloses a process for synergistically producing calcium aluminate powder by using a power station boiler. A microcomputer batching device is used to prepare raw materials, and the raw materials include the following components in the following weight proportions: coal 50%-70%, calcium oxide 10%- 20%, alumina 20%~30%; after the raw materials are mixed, they are conveyed to the crusher (mill) for crushing and pulverizing; the crushed powder materials are sent to the storage bin (homogenization bin) through the material conveyor; The boiler feeding device is sent to the power station boiler for combustion; the fly ash after combustion is collected by the dust collector and enters the finished product warehouse. The invention makes full use of the characteristics of power station boilers, and converts fly ash into calcium aluminate powder products under the premise of controlling the ratio of raw materials, combustion temperature and other process indicators without affecting power generation; greatly reducing the production cost of calcium aluminate powder , improve energy efficiency.

The invention provides a variable pitch control method and equipment for a wind turbine generator set. The variable pitch control method comprises the following steps of determining whether a vane ispositioned in an angle range capable of effectively measuring a clearance at present or not; when the vane is positioned in an angle range capable of effectively measuring the clearance, measuring theclearance of the vane positioned in the angle range capable of effectively measuring the clearance at present, and determining whether the measured clearance is smaller than a clearance threshold value or not; when the measured clearance is smaller than the clearance threshold value, in a process that a next adjacent vane is changed into the angle range capable of effectively measuring the clearance from a current position, gradually increasing an additional pitch angle given value of a next adjacent vane to a preset additional pitch angle given value, and obtaining the pitch angle given value of the next adjacent vane; and on the basis of the pitch angle given value of the next adjacent vane, controlling the next adjacent vane to carry out pitch variation. The variable pitch control method can be realized by a low cost, the clearance is increased, a tower-sweeping risk of the vane of the wind turbine generator set under an extreme wind situation can be lowered, and in addition, the electricity generating capacity of the wind turbine generator set is not affected.

The invention discloses a middle pier free steel gate capable of being fallen down. The invented steel gate comprises a bottom plate (23), and is characterized in that the bottom plate (23) is connected to a water retaining panel (1) which is connected to at least two supporting racks (4) connecting to supporting rack moving devices. A rotating shaft (6) is disposed under the water retaining panel (1) which is provided with a globoidal shape. One end of a flexible loose sheet (5) is connected with the lower end of the water retaining panel (1), and the other end thereof is connected with the bottom plate (23). The invented steel plate does not block water and has a good flood discharge effect. The invented steel gate is provided with a low cost, uniform force, and a long service life, and can be used conveniently and safely.

The invention provides a variable-pitch angle calibration method and device for a wind generating set. The variable-pitch angle calibration method for the wind generating set comprises the steps thatin the operating state, the wind generating set is locked for yaw processing; in the locked yaw processing state, blades of the wind generating set are adjusted to a preset angle in a variable-pitch mode from the current zero-degree position stored in a master controller; in the process of adjusting the blades to the preset angle in the variable-pitch mode, the maximum power value of the wind generating set is determined; and according to the maximum power value, the blade pitch angle corresponding to the maximum power value is determined, and the zero-degree blade pitch angle stored in the master controller is set to the blade pitch angle corresponding to the maximum power value. By adoption of the variable-pitch angle calibration method and device for the wind generating set, the calibration accuracy is improved, the calibration process is completed automatically without halts, and the calibration effect can better meet the maximum power tracking requirement of the wind generating set.