Marine steam-electric hybrid drive condensate and feed water pump set integrated device and control method thereof

Abstract

The invention discloses a marine steam-electricity hybrid drive condensate and feed water pump set integrated device and a control method thereof. The marine steam-electricity hybrid drive condensate and feed water pump set integrated device comprises a steam turbine, a motor, synchronous automatic clutches, a reduction gear box, a feed water pump and a condensate pump, output shafts of the steam turbine and the motor are respectively connected with a first input shaft and a second input shaft of the reduction gear box through respective synchronous automatic clutches, a driving output shaft of the reduction gear box is fixedly connected with an input shaft of the feed water pump, and a driven output shaft of the reduction gear box is fixedly connected with an input shaft of the condensate pump. Through automatic engagement or disengagement of the synchronous automatic clutches, the steam turbine or the motor is controlled to drive the reduction gear box to directly drive the feed water pump and the condensate pump to operate normally. According to the marine steam-electric hybrid drive condensate and feed water pump set integrated device, the technical problems that the configuration number is large, the size structure is large, the adaptability is low, operation is complex, and safety redundancy is insufficient in the narrow and severe marine environment are solved.

Description

technical field [0001] The invention relates to the technical field of marine steam power systems, in particular to a marine steam-electric mixed driving condensate feedwater pump set integration device and a control method thereof. Background technique [0002] The condensate feedwater system in the steam power system of a ship is a key system in the steam-water cycle. The system has strong coupling, many operating conditions, and complex equipment configuration. Its operating performance affects the stability and safety of the entire steam power system. important factor in the overall layout. Among them, the condensate pump and the feed water pump are the two core equipment of the condensate water supply system. The condensate pump transports the large flow of condensate in the main condenser to overcome the resistance of the main air extractor, steam seal air extractor, filter and pipeline valves to the oxygen removal system. Thermal deaeration is carried out in the deae...

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Problems solved by technology

At the same time, considering the large flow rate of the steam-water circulation in the power system, the power and structural volume of the condensate pump and the feedwater pump are relatively large, while the space in the electromechanical cabin area is limited and narrow, and the layout space of the condensate feedwater pump is limited. Faults such as cavitation of the feed pump and broken shaft of the condensate pump occur. Considering the operation safety of the steam power system, two turbine feed water pumps and two turbine condensate pumps are generally configured. A large number of steam turbines and electric condensate pumps also bring great difficulties to the cabin layout

[0004] Therefore, in order to solve the problems of large number of configurations of condensate pumps, large volume structure, poor suitability, complex operation, and insufficient safety redundancy, it is urgent to propose an integrated device for marine steam-electric hybrid flooding condensate feed pumps. , to realize the integration of the power structure of the condensate pump and the feed water pump, and the comprehensive integration of multiple driving sources of the steam turbine and generator, to ensure the operation safety of the pump set and to improve the utilization rate of the cabin space of the shipping arrangement, which is the overall design of the relevant ship steam power system reserve technology

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