# US 2017/0363286 A1 · Spray nozzle for attemperators and attemperator including the same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2017/0363286 A1 - Document ID: US20170363286A1 - Status: Published application - Kind: A1 - Application number: 15/461,342 - Filed: 2017-03-16 - Published: 2017-12-21 - Earliest claimed: 2016-06-21 - Assignees: Doosan Heavy Industries Construction Co., Ltd - Applicants: Doosan Heavy Industries & Construction Co., Ltd. - Inventors: Dong Wook KIM; Kyu Man KIM; Woo Seong SONG; Jae Cheol KIM; Cheol Hong KIM; Tae Jun YUN; Seong Yong JEONG - Web page: https://patentgrep.com/patent/US20170363286A1 ## CPC - B05B 7/0075: {Nozzle arrangements in gas streams} - B05B 15/65: Mounting arrangements for fluid connection of the spraying apparatus or its outlets to flow conduits - F22G 5/123: {Water injection apparatus} - B05B 1/205: {characterised by the longitudinal shape of the elongated body} - B05B 15/14: Arrangements for preventing or controlling structural damage to spraying apparatus or its outlets, e.g. for breaking at desired places; Arrangements for handling or replacing damaged parts - B05B: SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES (spray-mixers with nozzles B01F25/72; processes for applying liquids or other fluent materials to surfaces by spraying B05D) - F22G: SUPERHEATING OF STEAM ## Abstract Disclosed herein are a spray nozzle for an attemperator and an attemperator including the spray nozzle. An attemperator according to an embodiment includes: a steam transfer pipe through which steam is transferred; a fixed pipe which is fixed to an outer surface of the steam transfer pipe; and a spray nozzle, which is coupled to the fixed pipe, disposed in the steam transfer pipe and configured to spray cooling water into the steam transfer pipe. The spray nozzle includes, on an outer circumferential surface thereof, at least one support that protrudes toward the fixed pipe. The spray nozzle is spaced apart from the fixed pipe. ## Claims ### Claim 1 A spray nozzle installed in an attemperator, comprising: a steam transfer pipe operable to transfer steam; and a fixed pipe coupled to an outer surface of the steam transfer pipe, wherein the spray nozzle is operable to spray cooling water into the steam transfer pipe, the spray nozzle is disposed in and coupled to the fixed pipe, the spray nozzle includes at least one support protruding on an outer circumferential surface of the spray nozzle towards the fixed pipe, and the support is operable to space the spray nozzle and the fixed pipe apart from each other. ### Claim 2 (depends on 1) The spray nozzle according to claim 1, wherein an end of the support and an inner surface of the fixed pipe are spaced apart from each other. ### Claim 3 (depends on 1) The spray nozzle according to claim 1, wherein the support is disposed inside the outer surface of the steam transfer pipe. ### Claim 4 (depends on 1) The spray nozzle according to claim 1, wherein the support protrudes in a ring shape about the outer circumferential surface of the spray nozzle. ### Claim 5 (depends on 4) The spray nozzle according to claim 4, further comprising: a protrusion that protrudes from an outer circumferential surface of the support. ### Claim 6 (depends on 5) The spray nozzle according to claim 5, wherein the protrusion of the support includes a plurality of protrusions arranged on the outer circumferential surface of the support at positions spaced apart from each other. ### Claim 7 (depends on 1) The spray nozzle according to claim 1, wherein the spray nozzle includes a plurality of the supports arranged along the outer circumferential surface of the spray nozzle at positions spaced apart from each other. ### Claim 8 (depends on 1) The spray nozzle according to claim 1, wherein a junction between the support and the spray nozzle has a round shape. ### Claim 9 (depends on 1) The spray nozzle according to claim 1, wherein the support includes a taper in a longitudinal direction of the spray nozzle. ### Claim 10 (depends on 9) The spray nozzle according to claim 9, wherein a radial end of the taper is disposed radially outside the outer surface of the steam transfer pipe. ### Claim 11 (depends on 1) The spray nozzle according to claim 1, further comprising: a damper coupled to the support and operable to slide in a radial direction of the support, and an elastic unit disposed between the support and the damper. ### Claim 12 An attemperator comprising: a steam transfer pipe operable to transfer steam; a fixed pipe coupled to an outer surface of the steam transfer pipe; a spray nozzle disposed in the fixed pipe and operable to spray cooling water into the steam transfer pipe; and a nozzle fixing member disposed at a position spaced apart from the fixed pipe and operable to support a free end of the spray nozzle, wherein the spray nozzle includes at least one support protruding on an outer circumferential surface of the spray nozzle towards the fixed pipe, and the support is operable to space the spray nozzle and the fixed pipe apart from each other. ### Claim 13 (depends on 12) The attemperator according to claim 12, wherein the nozzle fixing member is aligned with the fixed pipe, and the free end of the spray nozzle is disposed in the nozzle fixing member. ### Claim 14 (depends on 12) The attemperator according to claim 12, wherein an inner surface of the fixed pipe includes a stop protrusion, and the outer circumferential surface of the spray nozzle includes a seat supported on a surface of the stop protrusion. ### Claim 15 (depends on 12) The attemperator according to claim 12, wherein the nozzle fixing member is disposed in and coupled to the steam transfer pipe. ### Claim 16 (depends on 15) The attemperator according to claim 15, wherein the nozzle fixing member threadedly couples with the spray nozzle. ### Claim 17 (depends on 12) The attemperator according to claim 12, wherein the nozzle fixing member includes a second support that protrudes toward the spray nozzle. ### Claim 18 An attemperator comprising: a steam transfer pipe operable to transfer steam; a fixed pipe coupled to an outer surface of the steam transfer pipe; a spray nozzle disposed in the fixed pipe and operable to spray cooling water into the steam transfer pipe; and a nozzle fixing member coupled to the steam transfer pipe and operable to support a free end of the spray nozzle, wherein the spray nozzle includes at least one support protruding on an outer circumferential surface of the spray nozzle towards the fixed pipe, and the support is operable to space the spray nozzle and the fixed pipe apart from each other. ### Claim 19 (depends on 18) The attemperator according to claim 18, wherein the nozzle fixing member is aligned with the fixed pipe, and the free end of the spray nozzle is disposed in the nozzle fixing member. ### Claim 20 (depends on 18) The attemperator according to claim 18, wherein the nozzle fixing member includes a second support that protrudes toward the spray nozzle.