| 摘要 |
<p>Disclosed in the present invention is an integrated tube rows connecting block instead of tubes bending parts in power station boiler, which comprises a distributary channel, a single-flow channel and an X-shaped connecting block with X-shaped longitudinal section arranged in lateral configuration. The four top corners of the X-shaped connecting block transversely form four horizontal top corner lines. Multi-group composite channels are arranged from left to right in the X-shaped connecting block. The outlets of the composite channels are uniformly distributed on four horizontal top corner lines of the X-shaped connecting block and form an upper-front row interface (1), an upper-rear row interface (2), a lower-front row interface (4) and a lower-rear row interface (3) respectively. The integrated tube rows connecting block has the advantages of reasonable space utilization, which ensures that the wall thicknesses between channels corresponding to the prior tubes bending parts are thickened at least 50 percent and maximally ensures tube rows safe operation so as to avoid stress concentration trouble and explosion of this position. The integrated tube rows connecting block also has the advantages of convenient maintenance which eliminates the maintenance bottleneck and convenient welding and assembly with 100 percent through ball rate.</p> |
