GB2426725A - Multi-outlet nozzle apparatus - Google Patents

Multi-outlet nozzle apparatus Download PDF

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Publication number
GB2426725A
GB2426725A GB0511127A GB0511127A GB2426725A GB 2426725 A GB2426725 A GB 2426725A GB 0511127 A GB0511127 A GB 0511127A GB 0511127 A GB0511127 A GB 0511127A GB 2426725 A GB2426725 A GB 2426725A
Authority
GB
United Kingdom
Prior art keywords
fluid
nozzle apparatus
outlets
fluid outlets
vertex
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
GB0511127A
Other versions
GB0511127D0 (en
Inventor
Charles Buchan Ritchie
Ian Milne
Gary Burgess
Andrew Mcclare
Christopher Barrington
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Score Group Ltd
Original Assignee
Score Group Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Score Group Ltd filed Critical Score Group Ltd
Priority to GB0511127A priority Critical patent/GB2426725A/en
Publication of GB0511127D0 publication Critical patent/GB0511127D0/en
Publication of GB2426725A publication Critical patent/GB2426725A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46—Details, e.g. noise reduction means
    • F23D14/48—Nozzles
    • F23D14/58—Nozzles characterised by the shape or arrangement of the outlet or outlets from the nozzle, e.g. of annular configuration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/02—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape
    • B05B1/06—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape in annular, tubular or hollow conical form
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/14—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with multiple outlet openings; with strainers in or outside the outlet opening
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/02—Spray pistols; Apparatus for discharge
    • B05B7/06—Spray pistols; Apparatus for discharge with at least one outlet orifice surrounding another approximately in the same plane
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/02—Spray pistols; Apparatus for discharge
    • B05B7/06—Spray pistols; Apparatus for discharge with at least one outlet orifice surrounding another approximately in the same plane
    • B05B7/061—Spray pistols; Apparatus for discharge with at least one outlet orifice surrounding another approximately in the same plane with several liquid outlets discharging one or several liquids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2206/00—Burners for specific applications
    • F23D2206/10—Turbines

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Nozzles (AREA)

Abstract

A nozzle apparatus 10 for a gas burner in a gas turbine engine. The nozzle apparatus comprising a body portion 12, the body portion 12 defining a fluid inlet 16; and a head portion 14, the head portion 14 defining a plurality of fluid outlets 22, wherein the body portion 12 has a substantially conical inner surface 18 adapted to direct fluid to the outlets 22, and the head portion 14 has a substantially conical outer surface 20, the fluid outlets 22 being arranged around the outer surface 20. The shape of the inner and outer conical surfaces 18, 20 and the shape and arrangement of the fluid outlets 22 ensures that the fluid exits the nozzle apparatus 10 in a homogeneous manner.

Description

1 Nozzle Apparatus 3 The present invention relates to a nozzle apparatus,
4 particularly, but not exclusively, to a nozzle apparatus for a gas burner in a gas turbine engine.
7 Conventional nozzles for gas burners are limited in 8 that they distribute the gas into the combustion 9 chamber in an uneven manner. The effect of this is to reduce the combustion efficiency of the gas 11 turbine engine, thereby producing higher levels of 12 pollutants in the exhaust gas stream and using more 13 fuel than would otherwise be required. Furthermore, 14 these pollutants and unburned fuel causes premature failure of combustion cans and other downstream 16 parts of the engine.
18 It is an object of the present invention to provide 19 a nozzle apparatus which obviates or mitigates one or more of the disadvantages referred to above.
1 According to a first aspect of the present invention 2 there is provided a nozz]e apparatus comprising: 3 a body portion, the body portion defining a 4 fluid inlet; and S a head portion, the head portion defining a 6 plurality of fluid outlets, 7 wherein the body portion has a substantially 8 conical inner surface adapted to direct fluid to the 9 outlets, and the head portion has a substantially conical outer surface, the fluid outlets being 11 arranged around the outer surface.
13 Preferably the conical inner surface has a vertex, 14 the vertex being rounded.
16 Preferably the radius of the rounded vertex is 0.125 17 inches.
19 Preferably the nozzle apparatus has a longitudinal axis and the inner surface has an angle of 60 21 degrees to the longitudinal axis of the nozzle 22 apparatus.
24 Preferably the conical outer surface has a vertex, the vertex being rounded.
27 Preferably the radius of the rounded vertex is 0.25 28 inches.
Preferably the outer surface has an angle of 45 31 degrees to the longitudinal axis of the nozzle 32 apparatus.
2 Preferably the fluid outlets are arranged in a 3 substantially ring-shaped pattern.
S Preferably the fluid outlets are arranged to be 6 adjacent one another.
8 Preferably the fluid outlets have longitudinal axes, 9 the fluid outlets being arranged such that the longitudinal axes are perpendicular to the outer 11 surface of the head portion.
13 Preferably the fluid outlets have an inlet portion 14 and an outlet portion, the inlet portion having a diameter which is greater than the diameter of the 16 outlet portion.
18 Preferably the outlets have a tapered portion and a 19 cylindrical portion.
21 Preferably the nozzle comprises 12 fluid outlets.
23 According to a second aspect of the present 24 invention there is provided a gas burner for a gas turbine engine comprising a nozzle apparatus 26 according the first aspect.
28 An embodiment of the present invention will now be 29 described, by way of example only, with reference to the accompanying drawings, in which:- 1 Fig. 1 is a cross sectional side view of a nozzle 2 apparatus in accordance with the present invention; 3 and 4 Fig. 2 is a bottom view of the nozzle apparatus of Fig. 1.
7 With reference to Fig. 1, a nozzle apparatus 10 has 8 a body portion 12, a head portion 14 and a 9 longitudinal axis 1.
11 The body portion 12 is substantially cylindrical and 12 has a fluid inlet 16 at a first end and a 13 substantially conical inner surface 18 at a second 14 end.
16 The head portion 14 has a substantially conical 17 outer surface 20 and a plurality of fluid outlets 18 22.
As best seen in Fig. 1, the inner conical surface 18 21 of the body portion 12 is shaped so as to direct 22 fluid entering the fluid inlet 16 to the fluid 23 outlets 22.
The inner conical surface 18 has a vertex 24 which 26 is rounded. The radius of the rounded portion of 27 the vertex 24 is 0.125 inches. Of course, it should 28 be appreciated that the radius of the rounded 29 portion of the vertex 24 could be of any suitable magnitude which allows the fluid to be directed to 31 the fluid outlets 22.
1 The inner conical surface 18 has an angle of 60 2 degrees to the longitudinal axis 1 of the nozzle 3 apparatus 10. Of course it should be appreciated 4 that the angle the inner conical surface 18 makes with the longitudinal axis 1 of the nozzle apparatus 6 10 could be of any suitable angle which allows the 7 fluid to be directed to the fluid outlets 22.
9 The outer conical surface 20 has a vertex 26 which is rounded. The radius of the rounded portion of 11 the vertex 26 is 0.25 inches. Of course, it should 12 be appreciated that the radius of the rounded 13 portion of the vertex 26 could be of any suitable 14 magnitude.
16 The outer conical surface 20 has an angle of 45 17 degrees to the longitudinal axis 1 of the nozzle 18 apparatus 10. Of course it should be appreciated 19 that the angle the outer conical surface 20 makes with the longitudinal axis 1 of the nozzle apparatus 21 10 could be of any suitable angle.
23 As best seen in Fig. 2, the fluid outlets 22 of the 24 head portion 14 are arranged in a ring-shaped pattern around the outer surface 20. The fluid 26 outlets 22 are arranged such that they are adjacent 27 one another.
29 As best seen in Fig. 1, the fluid outlets 22 have longitudinal axes 28 and are arranged such that the 31 longitudinal axes 28 are perpendicular to the outer 32 surface 20 of the head portion 14.
2 The fluid outlets 22 have an inlet portion 30 and an 3 outlet portion 32. The inlet portion 30 has a 4 tapered portion 34 and the outlet portion 32 has a cylindrical portion 36. The inlet portion 30 has a 6 diameter which is greater than the diameter of the 7 outlet portion 32.
9 As illustrated in Fig. 2, the nozzle apparatus 10 comprises 12 fluid outlets 22, however, it should be 11 appreciated that the nozzle apparatus 10 could 12 comprise any suitable number of fluid outlets 22.
14 In operation, fluid enters the fluid inlet 16 of the body portion 12 and is directed by the inner surface 16 18 to the fluid outlets 22 of the head portion 14.
18 The shape of the inner and outer conical surfaces 19 18, 20 and the shape and arrangement of the fluid outlets 22 ensures that the fluid exits the nozzle 21 apparatus 10 in a homogeneous manner. Specifically, 22 the shape of the inner and outer conical surfaces 23 18, 20 and the shape and arrangement of the fluid 24 outlets 22 ensures that the fluid exits the nozzle in a vortex pattern.
27 The nozzle apparatus 10 may be used as part of a gas 28 burner in a gas turbine engine. The fluid in this 29 case is typically a combustable gas fuel. In this case, the gas fuel is distributed to the combustion 31 zone of the gas turbine in a homogeneous manner.
32 The vortex created by the nozzle apparatus 10 does 1 not come into contact with any other part of the 2 engine and ensures that all the fuel is correctly 3 burned. This has the effect of increasing the 4 combustion efficiency of the fuel in the combustion zone, and thus reducing the levels of pollutants in 6 the exhaust gas stream and reducing the fuel 7 consumption of the gas turbine engine. With the 8 level of pollutants in the exhaust gas stream 9 reduced, the risk of premature failure of the combustion cans or other downstream parts of the 11 engine is also reduced.
13 The nozzle apparatus 10 therefore obviates or 14 mitigates the disadvantages of the previous proposals by distributing the fluid in a homogeneous 16 manner.
18 Modifications and improvements may be made to the 19 above without departing from the scope of the present invention. For example, although the nozzle 21 apparatus 10 has been described above as being used 22 with a gas burner of a gas turbine engine, it should 23 be appreciated that the nozzle apparatus 10 could be 24 used in any application where the distribution of a fluid is required to be homogeneous.
27 Furthermore, although the fluid outlets 22 have been 28 described above as being arranged adjacent one 29 another in a ring-shape around the outer surface 20, it should be appreciated that the outlets 22 may be 31 spaced apart in the circumferential direction.
1 Also, although the fluid outlets 22 have been 2 described above as being arranged such that their 3 longitudinal axes 28 are perpendicular to the outer 4 surface 20 of the head portion 14, it should be appreciated that the fluid outlets 22 could be 6 arranged such that their longitudinal axes are at 7 any suitable angle to longitudinal axis 1 of the 8 nozzle apparatus 10.
Furthermore, although the nozzle apparatus 10 has 11 been described above as being used in a gas burner 12 where the fluid is a combustable gas fuel, it should 13 be appreciated that the fluid could vary between a 14 pure hydrocarbon liquid to a pure gas with various levels of water content. The fluid may also be a 16 mixture of pure hydrocarbon liquids and pure gases.

Claims (1)

1 Claims 3 1. A nozzle apparatus comprising: 4 a body portion, the body
portion defining a fluid inlet; and 6 a head portion, the head portion defining a 7 plurality of fluid outlets, 8 wherein the body portion has a substantially 9 conical inner surface adapted to direct fluid to the outlets, and the head portion has a substantially 11 conical outer surface, the fluid outlets being 12 arranged around the outer surface.
14 2. A nozzle apparatus as claimed in claim 1, wherein the conical inner surface has a vertex, the 16 vertex being rounded.
18 3. A nozzle apparatus as claimed in claim 1 or 19 2, wherein the conical outer surface has a vertex, the vertex being rounded.
22 4. A nozzle apparatus as claimed in any preceding 23 claim, wherein the fluid outlets have longitudinal 24 axes, the fluid outlets being arranged such that the longitudinal axes are perpendicular to the outer 26 surface of the head portion.
28 5. A nozzle apparatus as claimed in any preceding 29 claim, wherein the fluid outlets have an inlet portion and an outlet portion, the inlet portion 31 having a diameter which is greater than the diameter 32 of the outlet portion.
2 6. A nozzle apparatus as claimed in any preceding 3 claim, wherein the fluid outlets have a tapered 4 portion and a cylindrical portion.
6 7. A gas burner for a gas turbine engine 7 comprising a nozzle apparatus of any of claims 1 to 8 6.
8. A nozzle apparatus as hereinbefore described 11 with reference to the accompanying drawings.
GB0511127A 2005-06-01 2005-06-01 Multi-outlet nozzle apparatus Withdrawn GB2426725A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB0511127A GB2426725A (en) 2005-06-01 2005-06-01 Multi-outlet nozzle apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0511127A GB2426725A (en) 2005-06-01 2005-06-01 Multi-outlet nozzle apparatus

Publications (2)

Publication Number Publication Date
GB0511127D0 GB0511127D0 (en) 2005-07-06
GB2426725A true GB2426725A (en) 2006-12-06

Family

ID=34834934

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0511127A Withdrawn GB2426725A (en) 2005-06-01 2005-06-01 Multi-outlet nozzle apparatus

Country Status (1)

Country Link
GB (1) GB2426725A (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1068640A (en) * 1963-12-20 1967-05-10 Gen Electric Dishwashing apparatus
EP0149901A1 (en) * 1983-12-09 1985-07-31 Tokyo Sangyo Kabushiki Kaisha Burner tip
EP0589075A1 (en) * 1991-06-20 1994-03-30 Mattson Spray Equipment, Inc. Air directing ring for fluid spray gun air cap
JPH06320060A (en) * 1994-06-08 1994-11-22 Osaka Zosenjo:Kk Multidirectional injection nozzle and its production
WO1999002271A1 (en) * 1997-07-08 1999-01-21 Angelo Mazzei Infusion nozzle

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1068640A (en) * 1963-12-20 1967-05-10 Gen Electric Dishwashing apparatus
EP0149901A1 (en) * 1983-12-09 1985-07-31 Tokyo Sangyo Kabushiki Kaisha Burner tip
EP0589075A1 (en) * 1991-06-20 1994-03-30 Mattson Spray Equipment, Inc. Air directing ring for fluid spray gun air cap
JPH06320060A (en) * 1994-06-08 1994-11-22 Osaka Zosenjo:Kk Multidirectional injection nozzle and its production
WO1999002271A1 (en) * 1997-07-08 1999-01-21 Angelo Mazzei Infusion nozzle

Also Published As

Publication number Publication date
GB0511127D0 (en) 2005-07-06

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Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)