专利汇可以提供Wheels fixed by shrinkage fit专利检索,专利查询,专利分析的服务。并且PURPOSE: To prevent the inside of key-way from cracking caused by stress corrosion or erosion, by providing a clearance groove on a position connected to the key-way position of step in lower stream, so as to release the steam and water drops entering the key-way into the lower stream quickly.
CONSTITUTION: A clearance groove 6 is provided on each step of key-way 5 of a wheel 2 being symmetric with respect to the key-way by 180° around the axis. The key-way 5 and clearance groove 6 of each step are communicated with each other through a clearance groove 7 for cutting work of key-way, while the clearance groove 6 of the former step is connected to the key-way 5 of the next step. When the damp steam shown by arrows enters the key-way 5, it turns its course through the clearance groove 7 for cutting work of key-way and flows into the clearance groove 6 positioned symmetrically by 180° around the axis along the inner surface of wheel 2. Furthermore, the steam enters the key-way 5 of wheel 2 of the second step from the wheel 2 of the first step. Thereby, the damp steam is allowed to escape in the lower stream rapidly without stagnation.
COPYRIGHT: (C)1982,JPO&Japio,下面是Wheels fixed by shrinkage fit专利的具体信息内容。
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