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Induced draft fan steam-electric double drive system and operation control method thereof

A technology of induced draft fan and controller, which is applied in the direction of engine control, mechanical equipment, engine components, etc., and can solve problems such as shafting long impact

Active Publication Date: 2020-10-23
GUODIAN LONGYUAN ENERGY SAVING TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The invention relates to a steam-electric dual-drive system of an induced draft fan and an operation control method thereof, which solves the problems in the prior art that a mechanical clutch is used in a steam-electric dual-drive system, the shaft system is rigidly connected, the shaft system is long and the impact is large

Method used

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  • Induced draft fan steam-electric double drive system and operation control method thereof
  • Induced draft fan steam-electric double drive system and operation control method thereof
  • Induced draft fan steam-electric double drive system and operation control method thereof

Examples

Experimental program
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Embodiment 1

[0046] see figure 1 , the present embodiment provides a steam-electric dual drive system for an induced draft fan, which includes a steam turbine 1, an asynchronous motor 4, an induced draft fan 5, and an eddy current permanent magnet device 3, the steam turbine 1, the eddy current permanent magnet device 3, The asynchronous motor 4 and the induced draft fan 5 are sequentially connected coaxially through a shaft coupling 2 .

[0047] Specifically, see figure 2 , image 3 The eddy current permanent magnet device 3 includes a housing 3-1, a drive shaft 3-21, a load shaft 3-22, a gap adjustment mechanism, a permanent disk rotor assembly and a conductor disk rotor assembly, wherein the gap adjustment mechanism, the permanent disk rotor assembly and The conductor disk rotor assembly is placed in the housing 3-1. The drive shaft 3-21 passes through the casing 3-1, and its two ends are respectively connected with the conductor disk rotor assembly and the power output shaft of the...

Embodiment 2

[0061] see Figure 4 , on the basis of Embodiment 1, the gap adjustment mechanism can also be the following scheme:

[0062]In this embodiment, the gap adjustment mechanism is different from Embodiment 1 in that this embodiment uses a compression spring 3-23, which is set on the load shaft 3-22 and fixed on the first permanent Between the disk rotor 3-10 and the second permanent disk rotor 3-9, the first permanent disk rotor 3-10 and the second permanent disk rotor 3-9 can be driven away from each other. Correspondingly, the first shift fork 3-18 and the second shift fork 3-15 are placed on the opposite sides of the first permanent disk rotor 3-10 and the second permanent disk rotor 3-9, and are connected to the first permanent disk rotor respectively. 3-10 abuts against the second permanent disk rotor 3-9, and can push the first permanent disk rotor 3-10 and the second permanent disk rotor 3-9 close to each other. A first annular groove 3-20 and a second annular groove 3-24...

Embodiment 3

[0065] see Figure 5 , further, on the basis of the induced draft fan steam-electric dual drive system described in the first and second embodiments, a controller 7 and a processor 6 are also included.

[0066] The processor 6 and the clearance adjusting mechanism are connected with the controller 7 in communication. The processor 6 converts the preset torque and load information of the induced draft fan 5 into position adjustment information of the first permanent disk rotor 3 - 10 and the second permanent disk rotor 3 - 9 , and transmits the information to the controller 7 . The controller 7 controls the motor 3-19 to start according to the position adjustment information received, the leading screw 3-14 rotates forward, and the first shift fork 3-18 and the second shift fork 3-15 are respectively on the first slide block 3-17 and the first shift fork 3-15. Driven by the second slider 3-16, the first permanent disk rotor 3-10 and the second permanent disk rotor 3-9 are driv...

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Abstract

The invention relates to an induced draft fan steam-electric double drive system which comprises a steam turbine, a vortex permanent magnet device, an asynchronous motor and an induced draft fan sequentially and coaxially connected; the vortex permanent magnet device comprises a shell, a drive shaft, a load shaft, a clearance adjusting mechanism, a permanent magnet disc rotor component and a conductor disc rotor component; the two ends of the drive shaft are connected with a power output shaft of the steam turbine and the conductor disc rotor component separately; the two ends of the load shaft are connected with the permanent magnet disc rotor component and the asynchronous motor separately; and the clearance adjusting mechanism is connected with two permanent magnet disc rotors in the permanent magnet disc rotor component and drives the two permanent magnet disc rotors to move between an initial position and an adjusting position. The vortex induction between the permanent magnet disc rotor component and the conductor disc rotor component realizes synchronous rotation of the steam turbine, the asynchronous motor and the induced draft fan, and a traditional mechanical contact typeclutch is replaced, so that influence caused by the situation that a traditional shafting structural system is excessively long, the shafting displacement and vibration are large is avoided and system operation can be safer and more stable.

Description

technical field [0001] The invention relates to the technical field of energy saving and consumption reduction in thermal power plants, in particular to a steam-electric dual drive system for an induced draft fan and an operation control method thereof. Background technique [0002] With the development of economy and society and the advancement of science and technology, the technology of thermal power plants has undergone many upgrades, and its impact on my country's economy is becoming increasingly important. The induced draft fan is a large power consumer in thermal power plants, how to reduce its energy consumption, tap its potential, and improve system efficiency is the goal of many power workers. [0003] The traditional induced draft fan is directly driven by the motor, which consumes too much power and the operating cost is too high. Therefore, the steam-electric dual drive system of the induced draft fan has been widely used, that is, the electric motor is used to...

Claims

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Application Information

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IPC IPC(8): F01D15/08F01D15/10F01D21/00
CPCF01D15/08F01D15/10F01D21/00F05D2270/304Y02P80/15
Inventor 李硕张源
Owner GUODIAN LONGYUAN ENERGY SAVING TECH
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