CN203501212U - Self entraining and purging system for double-fuel spray nozzle of combustion chamber - Google Patents

Self entraining and purging system for double-fuel spray nozzle of combustion chamber Download PDF

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Publication number
CN203501212U
CN203501212U CN201320487878.3U CN201320487878U CN203501212U CN 203501212 U CN203501212 U CN 203501212U CN 201320487878 U CN201320487878 U CN 201320487878U CN 203501212 U CN203501212 U CN 203501212U
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CN
China
Prior art keywords
bleed
entraining
combustion chamber
fuel
self
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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Withdrawn - After Issue
Application number
CN201320487878.3U
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Chinese (zh)
Inventor
张善军
王艳丽
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AECC Shenyang Engine Research Institute
AVIC Shenyang Engine Design and Research Institute
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AVIC Shenyang Engine Design and Research Institute
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Priority to CN201320487878.3U priority Critical patent/CN203501212U/en
Application granted granted Critical
Publication of CN203501212U publication Critical patent/CN203501212U/en
Anticipated expiration legal-status Critical
Withdrawn - After Issue legal-status Critical Current

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Abstract

The utility model relates to a self entraining and purging system for a double-fuel spray nozzle of a combustion chamber. The self entraining and purging system comprises an entraining hole, an entraining branch pipe, a purging branch pipe, a control valve, a purging header pipe and an entraining header pipe, wherein the entraining hole is formed in a combustion chamber casing near an inlet of the combustion chamber; a pressure difference between the inlet of the combustion chamber and the internal part of a flame tube, which is generated by using self flowing loss of the combustion chamber is used as a driving force to guide entrained gas at the inlet of the combustion chamber to the double-fuel spray nozzle of the combustion chamber, so that residual fuel can be purged; two ends of the entraining branch pipe are respectively connected with the entraining hole and the entraining header pipe, so that the entrained gas is collected to the entraining header pipe; two ends of the purging header pipe are respectively connected with the entraining header pipe and the control valve; two ends of the purging branch pipe are respectively connected with the control valve and a fuel header pipe; the entrained gas is distributed by the control valve, so that purging through different fuel channels of the double-fuel spray nozzle can be realized. The self entraining and purging system has the advantages that no external gas source is needed, continuous purging and convenience for maintenance can be realized, the structure is simple, purging the double-fuel spray nozzle of the combustion chamber is realized, and coking is avoided.

Description

A kind of dual-fuel combustor nozzle self bleed blow out system
Technical field
The utility model relates to gas turbine dual-fuel combustor field, particularly a kind of dual-fuel combustor nozzle self bleed blow out system.
Background technology
Double fuel refers to liquid fuel and gaseous fuel, and combustion chamber fuel use pattern comprises: independent combusting liquid fuel, independent operating on gaseous fuel, double fuel multifuel combustion.Using separately under a kind of fuel mode, dual fuel nozzle inner Bi You mono-road fuel channel in combustion chamber is in idle state, meeting residual fuel in idle fuel channel, work fuel also can reflux and enter idle fuel channel, cause fuel coking in idle passage, typical solution is that dual-fuel combustor nozzle blow out system is set, and avoids coking.
Traditional blow out system adopts external air source, interval to blow clearly, this system need to be set up external air source, be generally gas bottle or air feed pump, gas bottle also needs periodic replacement, make engine machine system equipment increase, control complicated, operation maintenance is difficult, cost increases, interval is blown clearly and is caused entry of combustion chamber air-flow and internal gas flow fluctuation in addition, affects combustion chambers burn stability and outlet temperature field quality.In order to solve the deficiency of traditional blow out system, need to design a kind of without increasing external air source, blow clearly continuously, dual-fuel combustor nozzle self bleed blow out system simple in structure, easy to maintenance.
Utility model content
The purpose of this utility model is in order to solve the deficiency of traditional blow out system, and spy provides a kind of dual-fuel combustor nozzle self bleed blow out system.
The utility model provides a kind of dual-fuel combustor nozzle self bleed blow out system, it is characterized in that: described dual-fuel combustor nozzle self bleed blow out system, comprises bleed hole 1, bleed is in charge of 6, blows and is in charge of 9 clearly, control valve 10, blow clearly house steward 11, bleed house steward 12;
Bleed hole 1 is arranged near the outer combustion case 4 entry of combustion chamber 3, the pressure differential that the flow losses of utilizing combustion chamber self produce at entry of combustion chamber 3 and burner inner liner inner 7 is as driving force, the bleed at entry of combustion chamber 3 places 2 guiding, to combustion chamber dual fuel nozzle 5, are realized to residual fuel and blow clearly;
Bleed is in charge of 6 two ends and is connected respectively bleed hole 1 and bleed house steward 12, for realizing, bleed 2 is come together in to bleed house steward 12; Blow clearly house steward 11 two ends and connect respectively bleed house steward 12 and control valve 10, blow clearly and be in charge of 9 two ends and connect respectively control valve 10 and fuel manifold 8, realize bleed 2 and enter fuel manifold 8 and dual fuel nozzle 5; By 10 pairs of bleeds 2 of control valve, distribute, realize dual fuel nozzle 5 different fuel passages and blow clearly.
Described bleed hole 1 quantity be 1 to 10 along circumferential arrangement.
Described bleed hole 1 is circular hole, square hole or ellipse hole.
It is identical that 6 quantity are in charge of in described control valve 10 and bleed.
Advantage of the present utility model:
Dual-fuel combustor nozzle described in the utility model self bleed blow out system, without increasing external air source, blow clearly continuously, simple in structure, easy to maintenance, realize dual-fuel combustor mouth blown clearly, avoid coking.
Accompanying drawing explanation
Below in conjunction with drawings and the embodiments, the utility model is described in further detail:
Fig. 1 is dual-fuel combustor nozzle self bleed blow out system schematic diagram;
Fig. 2 is dual-fuel combustor nozzle self bleed blow out system bleed hole partial enlarged drawing.
The specific embodiment
Embodiment 1
The present embodiment provides a kind of dual-fuel combustor nozzle self bleed blow out system, it is characterized in that: described dual-fuel combustor nozzle self bleed blow out system, comprises bleed hole 1, bleed is in charge of 6, blows and is in charge of 9 clearly, control valve 10, blow clearly house steward 11, bleed house steward 12;
Bleed hole 1 is arranged near the outer combustion case 4 entry of combustion chamber 3, the pressure differential that the flow losses of utilizing combustion chamber self produce at entry of combustion chamber 3 and burner inner liner inner 7 is as driving force, the bleed at entry of combustion chamber 3 places 2 guiding, to combustion chamber dual fuel nozzle 5, are realized to residual fuel and blow clearly;
Bleed is in charge of 6 two ends and is connected respectively bleed hole 1 and bleed house steward 12, for realizing, bleed 2 is come together in to bleed house steward 12; Blow clearly house steward 11 two ends and connect respectively bleed house steward 12 and control valve 10, blow clearly and be in charge of 9 two ends and connect respectively control valve 10 and fuel manifold 8, realize bleed 2 and enter fuel manifold 8 and dual fuel nozzle 5; By 10 pairs of bleeds 2 of control valve, distribute, realize dual fuel nozzle 5 different fuel passages and blow clearly.
Described bleed hole 1 quantity be 1 to 10 along circumferential arrangement.
Described bleed hole 1 is circular hole.
It is identical that 6 quantity are in charge of in described control valve 10 and bleed.
Embodiment 2
The present embodiment provides a kind of dual-fuel combustor nozzle self bleed blow out system, it is characterized in that: described dual-fuel combustor nozzle self bleed blow out system, comprises bleed hole 1, bleed is in charge of 6, blows and is in charge of 9 clearly, control valve 10, blow clearly house steward 11, bleed house steward 12;
Bleed hole 1 is arranged near the outer combustion case 4 entry of combustion chamber 3, the pressure differential that the flow losses of utilizing combustion chamber self produce at entry of combustion chamber 3 and burner inner liner inner 7 is as driving force, the bleed at entry of combustion chamber 3 places 2 guiding, to combustion chamber dual fuel nozzle 5, are realized to residual fuel and blow clearly;
Bleed is in charge of 6 two ends and is connected respectively bleed hole 1 and bleed house steward 12, for realizing, bleed 2 is come together in to bleed house steward 12; Blow clearly house steward 11 two ends and connect respectively bleed house steward 12 and control valve 10, blow clearly and be in charge of 9 two ends and connect respectively control valve 10 and fuel manifold 8, realize bleed 2 and enter fuel manifold 8 and dual fuel nozzle 5; By 10 pairs of bleeds 2 of control valve, distribute, realize dual fuel nozzle 5 different fuel passages and blow clearly.
Described bleed hole 1 quantity be 1 to 10 along circumferential arrangement.
Described bleed hole 1 is square hole.
It is identical that 6 quantity are in charge of in described control valve 10 and bleed.
Embodiment 3
The present embodiment provides a kind of dual-fuel combustor nozzle self bleed blow out system, it is characterized in that: described dual-fuel combustor nozzle self bleed blow out system, comprises bleed hole 1, bleed is in charge of 6, blows and is in charge of 9 clearly, control valve 10, blow clearly house steward 11, bleed house steward 12;
Bleed hole 1 is arranged near the outer combustion case 4 entry of combustion chamber 3, the pressure differential that the flow losses of utilizing combustion chamber self produce at entry of combustion chamber 3 and burner inner liner inner 7 is as driving force, the bleed at entry of combustion chamber 3 places 2 guiding, to combustion chamber dual fuel nozzle 5, are realized to residual fuel and blow clearly;
Bleed is in charge of 6 two ends and is connected respectively bleed hole 1 and bleed house steward 12, for realizing, bleed 2 is come together in to bleed house steward 12; Blow clearly house steward 11 two ends and connect respectively bleed house steward 12 and control valve 10, blow clearly and be in charge of 9 two ends and connect respectively control valve 10 and fuel manifold 8, realize bleed 2 and enter fuel manifold 8 and dual fuel nozzle 5; By 10 pairs of bleeds 2 of control valve, distribute, realize dual fuel nozzle 5 different fuel passages and blow clearly.
Described bleed hole 1 quantity be 1 to 10 along circumferential arrangement.
Described bleed hole 1 is ellipse hole.
It is identical that 6 quantity are in charge of in described control valve 10 and bleed.

Claims (4)

1. dual-fuel combustor nozzle self a bleed blow out system, is characterized in that: described dual-fuel combustor nozzle self bleed blow out system, comprises bleed hole (1), (6) are in charge of in bleed, blow clearly and are in charge of (9), control valve (10), blow clearly house steward (11), bleed house steward (12);
Near the outer combustion case (4) that bleed hole (1) is arranged on entry of combustion chamber (3) is upper, and bleed is in charge of (6) two ends and is connected respectively bleed hole (1) and bleed house steward (12), for realizing, bleed (2) is come together in to bleed house steward (12); Blow clearly house steward (11) two ends and connect respectively bleed house steward (12) and control valve (10), blow clearly and be in charge of (9) two ends and connect respectively control valve (10) and fuel manifold (8).
2. according to dual-fuel combustor nozzle claimed in claim 1 self bleed blow out system, it is characterized in that: described bleed hole (1) quantity be 1 to 10 along circumferential arrangement.
3. according to dual-fuel combustor nozzle claimed in claim 1 self bleed blow out system, it is characterized in that: described bleed hole (1) is circular hole, square hole or ellipse hole.
4. according to dual-fuel combustor nozzle claimed in claim 1 self bleed blow out system, it is characterized in that: described control valve (10) is in charge of (6) quantity with bleed identical.
CN201320487878.3U 2013-08-09 2013-08-09 Self entraining and purging system for double-fuel spray nozzle of combustion chamber Withdrawn - After Issue CN203501212U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201320487878.3U CN203501212U (en) 2013-08-09 2013-08-09 Self entraining and purging system for double-fuel spray nozzle of combustion chamber

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201320487878.3U CN203501212U (en) 2013-08-09 2013-08-09 Self entraining and purging system for double-fuel spray nozzle of combustion chamber

Publications (1)

Publication Number Publication Date
CN203501212U true CN203501212U (en) 2014-03-26

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103423768A (en) * 2013-08-09 2013-12-04 中国航空工业集团公司沈阳发动机设计研究所 Bleed air purging system of dual-fuel combustor nozzle itself

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103423768A (en) * 2013-08-09 2013-12-04 中国航空工业集团公司沈阳发动机设计研究所 Bleed air purging system of dual-fuel combustor nozzle itself
CN103423768B (en) * 2013-08-09 2015-07-29 中国航空工业集团公司沈阳发动机设计研究所 A kind of dual-fuel combustion chamber nozzle of combustion self bleed blow out system

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