# US 2019/0376683 A1 · Attemperator and a use of a such > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0376683 A1 - Document ID: US20190376683A1 - Status: Published application - Kind: A1 - Application number: 16/472,310 - Filed: 2017-12-22 - Published: 2019-12-12 - Earliest claimed: 2016-12-22 - Applicants: Cci Valve Technology AB - Inventors: Pontus RÅÅD - Web page: https://patentgrep.com/patent/US20190376683A1 ## CPC - F22G 5/12: by attemperating the superheated steam, e.g. by injected water sprays - B01F 23/20: Mixing gases with liquids - F22G 5/123: {Water injection apparatus} - F28C 3/06: the heat-exchange media being a liquid and a gas or vapour (temperators for cooling steam F22) - F28C 3/08: with change of state, e.g. absorption, evaporation, condensation (generating steam under pressure F22) - F28F 2265/10: for preventing overheating, e.g. heat shields - F28F 2275/08: by clamping or clipping - F22G: SUPERHEATING OF STEAM - B01F: MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING (mixing paints B44D3/06) - F28C: HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA COME INTO DIRECT CONTACT WITHOUT CHEMICAL INTERACTION (safety devices in general F16P; fluid heaters having heat generating means F24H; with an intermediate heat-transfer medium coming into direct contact with heat-exchange media F28D15/00 - F28D19/00; details of heat-exchange apparatus of general application F28F) - F28F: DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION (water and air traps, air venting F16) ## Abstract The invention relates ton attemperator. It has a pipe section (3) and a liner pipe section (4) arranged within the pipe section (3) and being attached thereto. The pipe section (3) has an internal wall surface (33) and the liner pipe section (4) has an external wall surface (43). The internal wall surface (33) and external wall surface (43) form a gap (6) between them. The pipe section (3) and liner pipe section (4) each has an inlet end (31, 41) for connection to a steam supply and an outlet end (32, 42) for steam. The attemperator is provided with water injection means (2) arranged for supplying water into the interior of the liner pipe section (4). The inlet end (31) of the liner pipe section (3) has an outwardly extending wall portion (44) forming an outer circumferential outer zone (45), which zone (45) may contact the internal wall surface (33) of the pipe section (3). According to the invention there is provided a plurality of openings (47) arranged to allow steam to enter the space formed by the gap (6) between the internal wall surface (33) and the external wall surface (43). The invention also relates to a use of the attemperator. ## Claims ### Claim 1 An attemperator including a pipe section (3) and a liner pipe section (4) arranged within the pipe section (3) and being attached thereto, the pipe section (3) having an internal wall surface (33) and the liner pipe section (4) having an external wall surface (43), which internal wall surface (33) and external wall surface (43) form a gap (6) between them along at least a major part of the axial extension of the liner pipe section (4), which pipe section (3) and liner pipe section (4) each has an inlet end (31, 41) for connection to a steam supply and an outlet end (32, 42) for steam, and which attemperator is provided with water injection means (2) arranged for supplying water into the interior of the liner pipe section (4), the inlet end (41) of the liner pipe section (4) having an outwardly extending wall portion (44) forming an outer circumferential zone (45), which zone (45) is adjacent or in contacts with the internal wall surface (33) of the pipe section (3) wherein there is provided at least one opening (47) at the inlet end (41) of the liner pipe section (4) arranged to allow steam to enter the space formed by the gap (6) between said internal wall surface (33) and said external wall surface (43), characterized in that the at least one opening (47) is a plurality of openings, preferably four openings. ### Claim 2 (depends on 1) An attemperator according to claim 1, wherein the openings (47) are evenly distributed in the circumferential direction. ### Claim 3 (depends on 1) An attemperator according to claim 1, wherein each opening (47) is formed between said internal wall surface (33) and a recess (46) in said contact zone (45). ### Claim 4 (depends on 1) An attemperator according to claim 1, wherein the total circumferential extension of the opening(s) (47) is in the range of 5 to 20% of the circumferential length of the contact zone. ### Claim 5 (depends on 1) An attemperator according to claim 1, wherein the total through flow area of the opening(s) (47) is in the range of 1 to 10% of the total cross area of said space in a section perpendicular to the axial extension of the pipe section. ### Claim 6 (depends on 1) An attemperator according to claim 1, wherein there is provided at least one axially extending opening (51a, 51b) at the outlet end (42) of the liner pipe section (4) arranged to allow steam to exit the space formed by the gap (6) between said internal wall surface (33) and said external wall surface (43). ### Claim 7 (depends on 1) An attemperator according to claim 1 any one of claim 1, wherein said wall portion (44) extends obliquely out from the inlet end (41) of the liner pipe section (4) towards the internal wall surface (33) of the pipe section (3) and is widening in the direction to the inlet end (31) of the pipe section (3). ### Claim 8 (depends on 7) An attemperator according to claim 7, wherein the angle (a) of said wall portion (44) with the axial direction of the liner pipe section (4) is in the range between 15 and 45°, preferably between 25 and 35°. ### Claim 9 (depends on 1) An attemperator according to claim 1, wherein the liner pipe section (4) is attached to the pipe section (3) by a clamp connection means (5) adjacent the outlet end (42) of the liner pipe section (4) which clamp connection means (5) is fastened to the interior wall surface (33) of the pipe section (3) and has an inner surface (52) that abuts the external wall (43) of the liner pipe section (4). ### Claim 10 (depends on 9) An attemperator according to claim 9, wherein the clamp connection means (5) includes at least one said opening (51a, 51b) establishing communication between the two axial sides of the clamp connection means (5). ### Claim 11 (depends on 10) An attemperator according to claim 10, wherein the clamp connection means (5) includes at least two units (5a, 5b) separated in the circumferential direction by a circumferential gap at each circumferential end of the units (5a, 5b), which circumferential gaps form said at least one said opening (51a, 51b). ### Claim 12 (depends on 9) An attemperator according to claim 9, wherein the exterior wall surface (43) of the liner pipe section (4) and the inner surface (52) of the clamp connection means (5) are shaped to provide axial locking relative each other. ### Claim 13 (depends on 12) An attemperator according to claim 12, wherein the axial locking is formed by at least one outwardly extending projection (48) of the external wall surface (43) of the liner pipe section (4) and a correspondingly shaped and located recess (52) in the inner surface of the clamp connection means (5) for each projection. ### Claim 14 (depends on 12) An attemperator according to claim 12, wherein there is only one projection (48) formed as a circumferentially extending rim. ### Claim 15 (depends on 1) A use of an attemperator according to claim 1 for supplying steam to a machine.