What is the stator of a generator in a hydroelectric power station mainly made of?

Introduction What is the main component of the stator of a generator in a hydroelectric power station? The stator is the part that does not rotate when the brushed or brushless motor is operating. The motor shaft of the hub type brush or brushless toothless motor is c

What is the stator of a generator in a hydroelectric power station mainly made of?

Stator

The part of a brushed or brushless motor that does not rotate when operating. The motor shaft of the hub-type brush or brushless toothless motor is called a stator, and this type of motor can be called an internal stator motor.

Rotor (rotor)

The main rotating component of some electrical machines and work machines. Typical rotors include turbine rotors, engine rotors, various pump rotors, and turbine compressor rotors. When the rotor rotates at certain specific speeds, it experiences a large deformation and causes resonance. The speed at which it causes resonance is called the critical speed of the rotor. In engineering, a rotor whose operating speed is less than the first-order critical speed is called a rigid rotor, and a rotor whose operating speed is greater than the first-order critical speed is called a flexible rotor. The ROtor rotating at high speed, it must be balanced. Static balancing is mainly used to balance the inertia force of the rotor disk. Dynamic balancing of rigid rotors can use a universal balancing machine to balance the inertia force and inertia torque to eliminate the vibration of the rotor on the elastic support. Dynamic balancing of flexible rotors is relatively complex. It can basically be divided into two categories: vibration shape balancing method and influence coefficient method.

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Take as an example the replacement of the lower ordinary wire rod (welded joint) of a generator with ordinary technology. The rotor is not removed for inspection. The main procedures for replacing the metal bars under normal circumstances are (some generators need to remove the rotor to replace the metal bars):

(1) Preparation work.< /p>

1) Remove and replace the metal bars Corresponding parts of the generator upper frame cover.

2) Remove the upper windshield of the corresponding generator stator; determine whether to remove the lower windshield if necessary.

3) Confirm For the magnetic pole to be removed, remove its corresponding magnetic pole connection and damping ring connector.

4) Lift the corresponding magnetic pole .

5) Determine the top post that needs to be removed, the bottom metal bars and number them one by one.

6) Testing the replacement metal bars.

(2) Disassemble the metal bar.

1) Remove and replace the metal bar. For the relevant stator bar joint insulation housing, weld the metal bar joints and cover them

2) Remove the corresponding bar end and the tie ropebevel ison, together with the end hoop connecting rope, and remove the mouth pad and bevel pads.

3) Take out the groove wedge, angled wedge and spacer. strip of the wire rod that needs to be removed.

4) Remove the upper layer wire rod and the interlayer spacer strip.

5) Remove the lower wire rod and the bottom. pads.

6) Clean the center wire tray and spray it with low resistance semiconductor paint if necessary.

(3) Reinstall the wire rods.< /p>

1) Insert the lower pad and lower wire rod; the test is qualified.

2) Install the bevel pad of the lower wire rod, tie it and connect it to the end of the hoops.

p>

3 ) The bottom layer has the middle pad and the top wire rod; the test is qualified.

4) The lower person has the upper pad, the groove corner and the inclined corner.

5) Tighten the slot wedge; the test is passed.

6) Install the wire rod connector and cover it, solder the joint and the joint strength test passes.

7) Install the box 'joint insulation.

8) Install the mouth pad and bevel pad, end and bevel tie rope, and the bottom of the corner to slot tie rope .

(4) After all work is completed, the ends of the winding shall be sprayed with surface coating paint in accordance with the process requirements. Reinstall the remaining components in the reverse order of disassembly and assembly.

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