Technical Realization Elements of Self-recovery Atmospheric Valve for Low Pressure Cylinder of Steam Turbine

Technical realization elements:

3. In order to solve the above technical problems, this utility model provides a self-recovering atmospheric valve for the low pressure cylinder of a steam turbine, which can be operated repeatedly for many times and can self-recover its sealing performance. When the valve is opened, it only needs to overcome the weight of the valve plate itself, and the response is more sensitive. .

4. The technical solution adopted by this utility model to solve its technical problems is: a self-recovering atmospheric valve for the low pressure cylinder of a steam turbine, including a low pressure outer cylinder release valve flange, and a valve plate covering the flange port of the low pressure outer cylinder release valve; A hard seal is arranged between the outer edge of the bottom surface of the valve plate and the inner edge of the top surface of the flange of the low pressure outer cylinder release valve.

5. Further, the valve plate and the flange of the low-pressure outer cylinder release valve realize a hard seal between the two through the method of grinding.

6. Further, the inner edge of the top surface of the flange of the low pressure outer cylinder release valve is provided with a groove; the outer edge of the bottom surface of the valve plate contacts and seals with the bottom surface of the groove of the low pressure outer cylinder release valve flange.

7. Further, grease is filled between the outer edge of the valve plate and the outer side wall of the groove.

8. Further, the gland is directly pressed on the top side of the flange of the low-pressure outer cylinder release valve; the gland is fixed to the flange of the low-pressure outer cylinder release valve by bolts.

9. Further, the distance between the bolt and the outer edge of the valve plate is 50-60 mm.

10. The beneficial effects of the utility model: the self-recovering atmospheric valve of the low pressure cylinder of the steam turbine of the utility model can be operated repeatedly for many times and can self-recover the sealing performance. When the valve is opened, only the weight of the valve plate itself needs to be overcome, and the response is more sensitive. .

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