Refractory tile for protecting boiler water pipe

Abstract

and a second individual wing portion 2B having a width W and a height H that are integrally molded in a rectangular shape having a full width L and a full height H, and includes only three spacers on a back surface of the refractory tile and a recess

Claims

1. A refractory brick for protecting boiler water pipes, comprising a first wing portion, a central portion, and a second wing portion, all semi-tubular in width W and height H, sequentially connected in the width direction and integrally formed into a rectangle with a full width L and a full height H. A seagull-shaped refractory brick for protecting boiler water pipes is formed near the center of the back side of the aforementioned central portion, with a recess for hooking. Viewed from the back side, one of the first and second wing portions has a first spacer disposed at a position (3 / 4)W away in the width direction from the aforementioned central portion, on or near a virtual line extending in the height direction. The other wing portion has a spacer group of either a first spacer group or a second spacer group, wherein the first spacer group has the following two spacers: The second spacer group comprises two spacers: a second spacer and a third spacer, each disposed at a distance of at least (2 / 4)H from the central portion at a distance of (1 / 4)W from the central portion in the width direction, on or near a virtual line extending in the height direction; the area S of the virtual triangle formed by connecting the midpoints of the three spacers disposed on one of the aforementioned single wing portions and the other of the aforementioned single wing portions in the width and height directions is {(H / 2)×(LW)} / 2≦S<(L×H) / 2.

2. The refractory bricks for boiler water pipe protection as described in claim 1, wherein, In the aforementioned refractory brick for protecting boiler water pipes, which has the aforementioned first spacer group in the single wing of the other party, the aforementioned first spacer is disposed at a position above (3 / 4)H in the height direction from the lower end of the single wing of the other party; the aforementioned second spacer is disposed at a position below (1 / 4)H in the height direction from the lower end of the single wing of the other party; and the aforementioned third spacer is disposed at a position above (3 / 4)H in the height direction from the lower end of the single wing of the other party.

3. The refractory bricks for boiler water pipe protection as described in claim 1, wherein, In the aforementioned refractory brick for protecting boiler water pipes, which has the aforementioned first spacer group in the single wing of the other party, the aforementioned first spacer is disposed at a position (1 / 4)H or lower in the height direction from the lower end of the single wing of the other party; the aforementioned second spacer is disposed at a position (3 / 4)H or higher in the height direction from the lower end of the single wing of the other party; and the aforementioned third spacer is disposed at a position (1 / 4)H or lower in the height direction from the lower end of the single wing of the other party.

4. The refractory bricks for boiler water pipe protection as described in claim 1, wherein, In the aforementioned refractory brick for protecting boiler water tubes, which has the aforementioned second spacer group in the single wing portion of the other party, the aforementioned central portion, in its cross-sectional shape, has a thickened portion whose thickness increases as it extends from the back side toward the surface; the aforementioned first spacer is disposed at a position (2 / 4)H above or near the lower end of the single wing portion of the other party in the height direction; the aforementioned second spacer is disposed at a position (1 / 4)H above or below the lower end of the single wing portion of the other party in the height direction; the aforementioned third spacer is disposed at a position (3 / 4)H above or above the lower end of the single wing portion of the other party in the height direction.

5. The refractory bricks for boiler water tube protection as described in any one of claims 1 to 4, wherein, Above the aforementioned central portion, a fitting protrusion protruding from its upper end is further integrally formed; below the aforementioned central portion, a fitting recess for fitting the aforementioned fitting protrusion is further integrally formed; when the two aforementioned refractory bricks for protecting boiler water pipes are arranged in the vertical direction, the aforementioned fitting protrusion of the aforementioned refractory brick for protecting boiler water pipes located below fits into the aforementioned fitting recess of the aforementioned refractory brick for protecting boiler water pipes located above.

Images