40results about How to "Save factory electricity" patented technology

The invention discloses SCR (Selective Catalytic Reduction) denitration reducing agent urea pyrolysis heat source supply method and device, belonging to the field of preparing an NOx denitration reducing agent. The method comprises the steps of arranging a heat exchanger at a boiler flue gas area, and heating primary hot air which is introduced into the heat exchanger to the pyrolysis temperature of urea by utilizing the boiler flue gas of the area. The device comprises the boiler flue gas area with flue gas temperature of 400-900 DEG C, a device capable of generating primary hot air in the boiler, and an urea pyrolysis reactor, wherein the heat exchanger is arranged at the boiler flue gas area, the heat exchanger is connected with the device capable of generating primary hot air in the boiler, and used for introducing the primary hot air to be heated by flue gas of the boiler flue gas area, and the primary hot air heated by the heat exchanger is introduced to the urea pyrolysis reactor. The invention relates to an SCR denitration reducing agent urea pyrolysis heat source supply method and device which are lower in the energy consumption and running cost of the urea pyrolysis technique.

The invention discloses a closed water cooling system with a double-evaporative cooling pressure, which provides the closed water cooling system used in an air-cooled thermal power set. The closed water cooling system comprises a direct-current evaporating and cooling closed water chiller A, a direct-current evaporating and cooling closed water chiller B, a vacuum butterfly valve, a vapor injector A, a vapor injector B, five sections of steam extracting and entering regulating valve, a plant steam aiding and entering regulating valve, a NO. 8 low pressure heater, a condenser, a liquid level sensor and a DCS (distributed control system); pipe sides of the two direct-current evaporating and cooling closed water chillers A and B are connected in series; and an evaporating and cooling pressure at a casing side of B is lower than that of A, thus the problem that output power of a turbo generator set is limited by an overhigh temperature of closed water is solved, cooling conditions of a host machine and an auxiliary machine are improved, heat output by hot closed water is recycled as much as possible, and power consumption of the closed water system is lowered. By the adoption of the closed water cooling system, no wet-type mechanical ventilated cooling tower is needed for open circulated water cooling, the occupation area of the cooling tower is reduced, the investment on capital construction is reduced, the electricity consumption is decreased, and the water consumption is zero.

The invention discloses a vacuum energy vortex steam condenser which comprises a cylindrical vortex generating chamber, wherein a condensate collecting chamber is communicated with the lower part of the vortex generating chamber, a vacuum pump is connected with the upper end of the vortex generating chamber through a vacuum pipe, a spout is formed on the side wall of the vortex generating chamber and tangential to the generatrix of the inner wall of the vortex generating chamber and used for injecting the steam exhaust from a steam turbine, a condensate pump is connected with the lower end of the condensate collecting chamber through a condensate delivery pipe, the spout is a slit penetrating the vortex generating chamber in the vertical direction, and a wedged nozzle is communicated with the spout. The vacuum energy vortex steam condenser has the advantages of simple operating principle, economic efficiency and applicability, high efficiency and energy saving, safety and reliability, simple construction and installation, convenience for operation and maintenance, stable operation, lower water consumption as compared to a wet cooling unit, higher heat efficiency as compared to an air cooling unit, and lower investment as compared to a wet cooling unit.

The invention discloses a hot-state flushing system for a boiler system and the boiler system. The boiler system comprises a boiler, wherein the boiler comprises a boiler water-cooling wall; and watervapor obtained by heating through an adjacent boiler is introduced into a boiler water-cooling wall of a to-be-started boiler to subject to hot-state flushing. According to the hot-state flushing system for the boiler system and the boiler system disclosed by the invention, water vapor obtained by heating through the adjacent boiler is introduced into the boiler water-cooling water of the to-be-started boiler to subject to hot-state flushing, so that steps of igniting the boiler and starting various auxiliary machines in the prior art are avoided, and a step of continuously feeding water to the boiler through a water feeding pump of the boiler is avoided. The method and the boiler system disclosed by the invention improve hot-state flushing efficiency, reduce great water consumption in aboiler starting process, reduce electric consumption and oil consumption of various auxiliary machines, reduce starting time, reduce production cost, and reduce energy consumption of the boiler. The boiler system disclosed by the invention is simple, and is convenient to maintain.

The present invention provides a heating device of and a heating method for a large shafting component for a wind driven generator and a shafting assembling method. The heating device comprises: a flexible heating membrane configured to be coated on a surface of a to-be-heated member; a vacuumizing system configured to vacuumize the flexible heating membrane in the case that the flexible heating membrane is hermetically coated on the to-be-heated member; and a control unit configured to control the heating operation of the flexible heating membrane and the operation of the vacuumizing system. The technical solution of the present invention solves the assembling quality problem caused by uneven heating in the traditional heating method and assembling method, and is more energy-saving and environment-friendly.

The present invention relates to a chemical ultrafiltration water production system equipment and a control method thereof. The equipment includes: at least one ultrafiltration raw water tank for providing water source; multiple ultrafiltration water production pumps connected to at least one ultrafiltration raw water tank, multiple One ultrafiltration product water pump is set in a sequential start-stop mode, and multiple ultrafiltration product water pumps are used to pump out the water source in at least one ultrafiltration raw water tank; multiple ultrafiltration devices are electrically connected to multiple ultrafiltration product water pumps. The quantity of one ultrafiltration product water pump is greater than the quantity of multiple ultrafiltration devices, and multiple ultrafiltration devices are used to control the start or stop of multiple ultrafiltration product water pumps and receive and filter water sources. When any ultrafiltration device in multiple ultrafiltration devices The filter device is started, and a signal is sent to control multiple ultrafiltration product water pumps to start one of the ultrafiltration product water pumps in sequence. The invention can intelligently adjust the number of ultrafiltration water production pumps operating according to the number of ultrafiltration devices in operation, and make multiple ultrafiltration water production pumps active and standby each other, so that the automatic standby rate, equipment fault tolerance and utilization rate are greatly improved.

The invention discloses a thermosyphon waste heat power generating system which comprises an integrated condensing, cooling and deaerating device. One end of the integrated condensing, cooling and deaerating device is sequentially connected with a condensing water tank, a water feed pump, a waste heat boiler and a turbine. The other end of the turbine is connected with the integrated condensing, cooling and deaerating device which is vertically arranged in a high position. The integrated condensing, cooling and deaerating device is located above the turbine and the condensing water tank and height of the device meets the condition that the pressure of a condensing water pipe to the condensing water tank is positive. The integrated condensing, cooling and deaerating device exchanges heat directly by phase change to replace the original sensible heat indirect heat exchange, and the cooling water quantity is greatly reduced, so that the device can be probably vertically arranged. Meanwhile, the back pressure of the turbine is effectively reduced. Therefore, the system fits the characteristic of a waste heat power station and overcomes the deficiencies of current systems. The purposes of simple and capable system, small occupied area, investment saving, high efficiency, less auxiliary power, high reliability, low failure rate and the like can be realized.

The invention discloses a control system for a low pressure main throttle valve stroke test of a small turbine. A low pressure main throttle valve is composed of an emergency trip protection system and an electro-hydraulic control system. The low pressure main throttle valve includes a full open stroke switch, a full closed stroke switch and a 75% stroke position stroke switch. A normally open contact of a wait-to-restore intermediate relay of a control cabinet of the emergency trip protection system is connected with a power source and a low pressure main throttle valve opening key circuit. Arestoration condition is added in control logic of the electro-hydraulic control system. The restoration condition is that a pulse signal is added when starting the test and closing the low pressuremain throttle valve, wherein logic OR operation is performed on the pulse signals and low pressure main throttle valve test in-place; if one condition is met, a low pressure main throttle valve closing command is restored and a low pressure main throttle valve opening command is sent after logic AND operation on the low pressure main throttle valve closing command after time delay disconnection. Therefore, tripping of a pump due to a fact that the 75% stroke position stroke switch cannot reflect throttle valve position signals accurately can be prevented.