| 摘要 |
A water-cooling U-valve is composed of a downcomer (1), a riser (2), and a return chute (3), which are sequentially connected. An intermediate partition (4) is disposed between the downcomer (1) and the riser (2), the lower parts of the downcomer (1) and the riser (2) are interconnected. A material returning partition (5) is disposed between the riser (2) and the return chute (3), the upper parts of the riser (2) and the return chute (3) are interconnected. The casing of U-valve comprises membrane walls, the inside of the membrane walls are laid with refractory. Some water-cooling tubes of the membrane walls extend into the inside of the U-valve, forming the water cooing intermediate partition (4) and material returning partition (5). The headers (40, 50) are connected with the headers (33, 13) formed by some water-cooling tubes of membrane walls by connecting tubes (7, 8). |
| 主权项 |
1. A water-cooling U-valve composed of:
a downcomer (1), a riser (2), and a return chute (3), which are sequentially connected, and each of which has a rectangular cross-section; an intermediate partition (4) disposed between the downcomer (1) and the riser (2), and the lower parts of the downcomer (1) and the riser (2) are interconnected; a material returning partition (5) disposed between the riser (2) and the return chute (3), and the upper parts of the riser (2) and the return chute (3) are interconnected; and, an air distribution plate (6) disposed at the bottoms of the downcomer (1) and the riser (2); a casing of a loop seal comprising membrane walls, including a front wall (11) of the downcomer (1), a top plate (21) of the riser (2), and a front wall (31) of the return chute (3); a rear wall (12) of the downcomer (1), a rear wall (32) of the return chute (3); and left and right walls; insides of the membrane walls are laid with refractory; wherein: I.) the material returning partition (5) for water-cooling comprises a first plurality of water-cooling tubes at a rear wall (32) of return chute (3), alternate ones of which extend into the loop seal, and intermediate partition (4) for water-cooling comprises a second plurality of water-cooling tubes at the front wall (11) of the downcomer (1) extending into the loop seal, wherein both sides and the tops of the intermediate partition (4) and the material returning partition (5) are laid with refractory; II.) the intermediate partition (4) comprises a first header (40) and the material returning partition (5) comprises a second horizontal header (50); III.) an annular third header (30) is provided at a material returning opening, wherein the third header (30) for the material returning opening is an inlet header for a cooling medium of the loop seal and connected with a downcomer of a drum; and an annular outlet header (10) for the loop seal is provided at the top of the downcomer (1), wherein the outlet header (10) for the loop seal is an outlet header for the cooling medium of the loop seal and is connected with the drum; IV.) said U-valve further comprises a horizontal fourth header (33), provided in the middle of the front wall (31) of the return chute (3), and a horizontal fifth header (13) for the rear wall (12) of the downcomer (1), provided in the middle of the rear wall (12) of the downcomer (1), and a third plurality of water-cooling tubes extending from said third header (30); wherein, at the front wall (31) of the return chute (3), one of each two adjacent water-cooling tubes of the third plurality of water-cooling tubes from the third header (30) for the material returning opening is diverted and connected with the horizontal fourth header (33) for the front wall (31) of the return chute (3); and, at the rear wall (12) of the downcomer (1), one of each two adjacent water-cooling tubes of a fourth plurality of water-cooling tubes extend into the outlet header (10) for the loop seal and are diverted and connected with the horizontal fifth header (13) for the rear wall (12) of the downcomer (1); and V.) the first header (40) for the intermediate partition (4) is connected with the horizontal fourth header (33) for the front wall (31) of the return chute (3), through first connecting tubes (7) for the headers (33, 40), and, the second horizontal header (50) for the material returning partition (5) is connected with the horizontal fifth header (13) for the rear wall (12) of the downcomer (1), through second connecting tubes (8) for the headers (13, 50). |
