Dongfang Yoyik manufactures original and high quality sealing ring bearing for steam turbine generator. The product is made of special stainless steel alloy based on precise processing drawing to ensure the quality meet the requirement of generator.
Small sealing clearance, good sealing effect, small hydrogen leakage, suitable for places with high hydrogen pressure;
It can float more freely, reducing the disturbance to the journal;
The sealing ring on the hydrogen side is closer to the inner wall of the oil groove of the support, has smaller oil return.
The Generator Hydrogen Sealing Ring, also called sealing bearing, is installed at the generator rotor ends and inside the bearing to seal the hydrogen in the generator stator. It has an internal oil ring which inlets sealing oil with higher pressure than hydrogen to seal hydrogen. Because the generator rotor shaft must go through the generator end cover, the sealing ring is the key to the hydrogen sealing inside the generator, which can effectively prevent the high-pressure hydrogen leakage along the gap between the end cover and rotor.
At present, circulation sealing bearings are mainly used. According to the number of oil circuits, it can be divided into single flow type, double flow type or three flow type. According to the number of bearing pads, it can be divided into single ring type or double ring type. After the oil circuit and the seal ring are combined, it can be divided into single flow single ring type, single flow double ring type, double flow single ring type, etc.
When the generator set is running, the sealing oil slightly higher than the hydrogen pressure in the generator enters from the back of the sealing ring, passes through and get into the gap between the sealing ring and the journal. Relying on the dynamic pressure effect caused by the high-speed rotation of the journal, the sealing ring floats up, and the gap between the dynamic and static is filled with lubricating oil, thus blocking the hydrogen leakage to achieve the sealing effect.
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