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Novel driving system and method of main feed water pump

A technology of main feed water pump and drive system, applied in the direction of pump, machine/engine, liquid variable capacity machinery, etc., can solve the problems of complex system, increase the workload of operation and maintenance, increase equipment investment, etc., and achieve the effect of ensuring economic operation.

Active Publication Date: 2013-10-16
SHANDONG ELECTRIC POWER ENG CONSULTING INST CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the second driving mode, auxiliary equipment such as small steam turbines are added to the entire system, which increases equipment investment, complicates the system, and increases the workload of operation and maintenance.
Therefore, there are certain shortcomings and deficiencies in both feedwater pump driving methods.

Method used

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  • Novel driving system and method of main feed water pump
  • Novel driving system and method of main feed water pump

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Such as figure 1 As shown, the main feedwater pump 3 and the steam turbine 6 are arranged on the same floor, the steam turbine 6 is connected to the generator 7, the main feedwater pump 3 is connected to the motor 1 through the clutch one 2, and the shaft is output at the head side of the steam turbine 6, and the clutch two 5, Speed ​​regulating gear box 4, main feed water pump 3, clutch one 2 and electric motor 1.

Embodiment 2

[0018] Such as figure 2 As shown, the main feedwater pump 3 and the steam turbine 6 are arranged on the same floor, the steam turbine 6 is connected to the generator 7, the main feedwater pump 3 is connected to the motor 1 through the clutch 1 2, and the shaft is output at the side of the generator 7, and the clutch 2 5 is connected in sequence. Speed ​​gearbox 4, main feed water pump 3, clutch 1 and motor 1.

[0019] During the start-up phase of the unit, the main feedwater pump 3 is driven by the motor 1 . The clutch 2 5 is separated to disengage the main feedwater pump 3 from the main shaft of the steam turbine 6. At the same time, the clutch 1 2 is combined, and the main feedwater pump 3 is driven by the motor 1 to ensure the normal operation of the main feedwater pump. This can ensure the operation of the entire main feedwater pump system Safety and reliability.

[0020] During the normal operation stage of the unit, the main feed water pump 3 is coaxial with the steam...

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Abstract

The invention discloses a novel driving system and method of a main feed water pump. The main feed water pump and a steam turbine are arranged in the same layer; an output shaft on the side of a head section of the steam turbine is successively connected with a clutch II, a speed-adjusting gear box, the main feed water pump, a clutch I and an electric motor; an output shaft on the side of the electric generator is successively connected with the clutch II, the speed-adjusting gear box, the main feed water pump, the clutch I and the electric motor. The novel driving system and method have the beneficial effects that reliable running of the main feed water pump at the starting stage of a machine group is ensured and economical running at normal running stage of the machine group is also ensured.

Description

technical field [0001] The invention relates to a novel drive system and method, in particular to a novel drive system and method for a main feed water pump. Background technique [0002] In recent years, with the gradual increase of thermal power assembly capacity, the wide application of large air-cooled units and the rapid development of nuclear power units, the driving mode of the main feedwater pump in the heat recovery system is becoming more and more important. At present, there are two types of driving methods commonly used: one is that the electric motor drives the feed water pump to rotate, and the other is that the small steam turbine drives the feed water pump to rotate. With the easy increase of generator assembly machines, the requirements for the main feed water pump are also getting higher and higher. In the first driving mode, although there is no small steam turbine to reduce the plant area and reduce equipment investment, the power consumption of the plan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04B17/00
Inventor 胡训栋王妮妮高永芬张乐川陈世玉苗井泉陈训刚姬锋军王光林马强
Owner SHANDONG ELECTRIC POWER ENG CONSULTING INST CORP
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