Thermodynamischer Kondenswasserableiter

摘要

945,210. Steam traps. H. R. GERDTS, and W. F. GERDTS, [trading as GUSTAV F. GERDTS KOMM.-GES.]. April 9, 1962 [April 29,1961; June 19,1961],No. 13524/62. Heading F4U. In a steam trap having inlet and outlet passages 18 and 19 respectively in a housing block 17, and a pressure chamber 29 and an exit chamber 6 separated by a freely movable valve plate 4, the volume of the pressure chamber is at least 44 times greater than the stroke volume of the valve plate. As shown, Fig. 2, a passage 23 connects inlet passage 18 with a chamber 24 formed in a cover 25, the chamber containing a dirt collecting sieve 36. A passage 20 leads down to the upper face of the valve plate 4, which may move between sealing surfaces on the bottom of the housing block, and projections 27 on the inner surface of a vessel 28 forming the pressure chamber 29. The exit chamber 6 is in the form of an annular recess in the upper surface of the valve plate 4, but it may alternatively be in the lower surface of the housing block 17, or be formed by corresponding recesses in both the valve plate and the housing block. Leakage grooves, each having a cross-sectional area of at least 1/10 sq. mm., connect the pressure chamber with the exit chamber. Further leakage grooves may be provided between the inlet passage 20 and the exit chamber 6. The exit chamber 6 is connected to the outlet opening 19 by passages 21 and 22. The housing block is clamped between the cover 25 and the vessel 28 by tie rods 31, and the vessel 28 may be surrounded by a protective hood 32, the enclosed annular space being filled with a thermal insulating material. In another embodiment, Fig. 3, the sieve 36 is contained in a separate vessel 37 attached to the housing block 17 by a bolt 38. A blow-off valve, not shown, may be provided in the bottom of the vessel 37 to allow cleaning of the sieve in situ. The sealing surfaces above the valve plate 4 are formed on the lower surface of a frusto-conical insert 39 held in position in a tapered bore 40 in the housing block by the clamped vessel 28. The inlet passage 20, and outlet passages 21, which latter are interconnected by an annular passage 212, are formed in the insert 39.