CN104776447B - A kind of combined type end cap for gas-turbine combustion chamber - Google Patents
A kind of combined type end cap for gas-turbine combustion chamber Download PDFInfo
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- CN104776447B CN104776447B CN201510142195.8A CN201510142195A CN104776447B CN 104776447 B CN104776447 B CN 104776447B CN 201510142195 A CN201510142195 A CN 201510142195A CN 104776447 B CN104776447 B CN 104776447B
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- fuel
- end cap
- pipeline
- outer panel
- interior plate
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Abstract
A kind of combined type end cap for gas-turbine combustion chamber, belongs to the structure design of gas-turbine combustion chamber.The end cap contains end cover body and multiple fuel nozzles and external fuel pipeline in end cover body；End cover body includes interior plate, outer panel, fuel introduction tube road and fuel and draws pipeline；Interior plate is concentrically inserted in outer panel, and both are linked together using fastener；At least one groove, groove composition inner fuel assignment channel are provided with the inner surface of the outer surface of interior plate or outer panel；Fuel introduction tube road is arranged at the top of outer panel, and fuel draws the bottom that pipeline is arranged on interior plate, and fuel introduction tube road is drawn pipeline by fuel assignment channel and fuel and is connected, and fuel is drawn pipeline and is connected with fuel nozzle.The combined type end cap reduces processing cost and the process-cycle of end cap without closing fuel channel with welding method, also avoids the welding stress introduced by welding；With detachability, it is easy to examination and maintenance.
Description
Technical field
The present invention relates to the end cover structure on gas-turbine combustion chamber head, more particularly to a kind of combined type end cap, belong to combustion
Gas-turbine technical field.
Background technology
For the combustion chamber of typical gas-turbine combustion chamber, especially ring-pipe type, end cap is the same with cylinder, usually presses
A part for force container, it covers the head of each combustion chamber as cover plate.Fuel nozzle is typically installed on end cap, simultaneously
Cover internal processes some fuel channels.For counterflow combustor, the compressor in cylinder is vented outside burner inner liner
Lateral head of combustion chamber flowing, and change flow direction on head, into nozzle；External fuel passes through cover internal fuel channel simultaneously
Conveying and distribution, in one or more nozzles with compressed air blend, subsequently complete combustion process.
The fuel channel of cover internal is often more complicated, and processing cost is higher.Prior art is usually the machine on end cap
Some conduits are processed, are then welded to using other cover plate at the top of conduit, the two is collectively forming the fuel channel of closure.This
Although technology disclosure satisfy that the functional requirement of end cap, but welding process is more time-consuming and has higher cost, and welding is readily incorporated
Welding stress, while welding structure is difficult to check or repaired.
For fuel temperature, compressor exhaust generally has higher temperature, and this temperature difference is the master of end cap thermal stress
Originate.During combustion engine startup, shutdown and varying duty etc., fuel constantly switches, and compressor delivery temperature changes therewith, makes
Larger transient thermal stress is born into end cap, service life is influenceed, therefore end cover designs will typically consider long-term durability
Problem.Therefore research and design one kind is more easily manufactured, and is easy to safeguard and is overhauled, and can reduce the end cap knot that cost is used for a long time
Structure is technical problem urgently to be resolved hurrily.
The content of the invention
It is an object of the invention to provide a kind of combined type end cap for gas-turbine combustion chamber, to avoid in conventional art
The shortcoming of fuel channel is closed using welding means, while having easily fabricated, the characteristics of being easy to safeguard and overhaul.
Technical scheme is as follows：
A kind of combined type end cap for gas-turbine combustion chamber, the end cap contains end cover body and installed in end cap master
Multiple fuel nozzles and external fuel pipeline on body, it is characterised in that：The end cover body includes interior plate, outer panel, extremely
A few fuel introduction tube road and multiple fuel draw pipeline；The interior plate is concentrically inserted in outer panel, and both are using tight
Firmware links together；At least one groove, the groove composition are provided with the inner surface of the outer surface of interior plate or outer panel
Inner fuel assignment channel；Described fuel introduction tube road is arranged at the top of outer panel, and fuel draws pipeline and is arranged on interior plate
Bottom, fuel introduction tube road draws pipeline by fuel assignment channel and fuel and is connected, and fuel is drawn pipeline and sprayed with fuel
Mouth is connected.
The technical characteristic of the present invention is also resided in：It is recessed provided with least two in the inner surface of the outer surface of interior plate or outer panel
Groove, places seal in a groove.
The present invention another technical characteristic be：Have between the fuel assignment channel and described fuel introduction tube road and expand
Zhang Tongdao.
Preferably, the fuel assignment channel is preferably 1~3.Each fuel assignment channel draws with least two fuel
Go out pipeline to be connected.
Compared to prior art, technique effect of the present invention with advantages below and high-lighting：1. the group of two boards is used
Box-like structure, without closing fuel channel with welding method, reduces processing cost and the process-cycle of end cap, also avoids by welding
Connect the welding stress of introducing；2. because combining structure has detachability, it is easy to examination and maintenance.End cap is easy in long-term use
Heat fatigue stress is produced, as consumable accessory, internal fuel passage or combustion can be more easily checked in the maintenance process of combustion chamber
Expect the deterioration extent near hole；Structure-based dismantled and assembled property, during follow-up use, easily can be carried out to fuel conduit
Plug-hole or perforate, change the fuel staging strategy of the integrated mode of multiinjector fuel supply, adjustment and change burning room.3. can be by
Easily cause heat and it is individually replaced after fatigue damage, reduce maintenance cost.
Brief description of the drawings
Fig. 1 is the structural representation for the combined type Endcap embodiments that the present invention is provided.
Fig. 2 is that Fig. 1 removes the blast sectional view of the assembling after fastener.
Fig. 3 is the overall structure diagram that combined type end cap of the present invention installs fuel nozzle and external fuel pipeline.
Description of reference numerals is as follows：1- interior plates；2- outer panels；3- end cover bodies；4- fuel nozzles；12- seals；
13- external fuel pipelines；15- fasteners；16- grooves；17- bolts hole；21- fuel assignment channels；22- fuel introduction tubes road；
23- grooves；24- fuel draws pipeline；26- expanding channels.
Embodiment
Below in conjunction with the accompanying drawings and specific embodiment, structure, principle and the embodiment to the present invention are done furtherly
It is bright.
Fig. 1 is the structural representation of combined type Endcap embodiments that the present invention is provided, the end cap contain end cover body 3 and
Multiple fuel nozzles 4 and external fuel pipeline 13 in end cover body 3；The end cover body 3 includes an interior plate
1st, outer panel 2, at least one fuel introduction tube road 22 and multiple fuel draw pipeline 24；The interior plate 1 is inserted with one heart
Enter in outer panel 2, both connected together using fastener (such as bolt), the outer surface of interior plate 1 or outer panel it is interior
Surface is provided with least one groove 23, preferably 1~3；Groove composition is internal after interior plate 1 and outer panel 2 are fitted close fires
Expect assignment channel 21；Described fuel introduction tube road 22 is arranged on the top of outer panel 2, and fuel draws pipeline 24 and is arranged on interior plate
1 bottom, fuel introduction tube road 22 is drawn pipeline 24 by fuel assignment channel 21 and fuel and is connected, and fuel draws pipeline 24
It is connected with fuel nozzle 4.In order that the better seal of fuel assignment channel 21, in the outer surface of interior plate or outer panel
Surface is provided with least two grooves 16, and seal is placed in a groove.
Fig. 2 is that Fig. 1 removes the blast sectional view of the assembling after fastener, and the outer surface of interior plate 1 is machined with multiple grooves
23, some regions of these grooves 23 and the inner surface of outer panel 2 are combined together, and constitute the fuel assignment channel 21.At this
In embodiment, fuel introduction tube road 22 is connected with the fuel assignment channel 21 by corresponding expanding channel 26, including is expanded
Fuel introduction tube road 22, fuel assignment channel 21 and fuel including Zhang Tongdao 26 draw pipeline 24 and constitute complete fuel together
Channel system.In other embodiments, expanding channel 26 can not be used, i.e., described fuel introduction tube road 22 is distributed with the fuel
Passage 21 is joined directly together；Generally, each fuel assignment channel is drawn pipeline with least two fuel and is connected.
Referring to Fig. 1 and Fig. 2, the maximum gauge of interior plate 1 is less than the minimum diameter of outer panel 2, and interior plate 1 is concentric during installation
In ground insertion outer panel 2, outer panel 2 is covered on interior plate 1, and both connect together.The outer surface of interior plate or outer panel
Inner surface has a series of grooves 16, for accommodating elastic sealing element.Seal 12 is between outer panel 2 and interior plate 1, together
When contact with both so that fuel assignment channel 21 is able to close without leaking.Interior plate 1 and outer panel 2 pass through fastening
Part 15 (bolt) is fixed together, and has the series of bolt holes for being used for installing the bolt on interior plate 1 and outer panel 2
17。
Fig. 3 is that the overall structure that combined type end cap of the present invention is installed after fuel nozzle 4 and external fuel pipeline 13 is shown
It is intended to, the top of outer panel 2 of end cap is provided with external fuel pipeline 13, and fuel is passed into fuel introduction tube road 22；End cap
The bottom of interior plate 1 is provided with multiple fuel nozzles 4, and fuel is drawn pipeline 24 and is connected with these fuel nozzles 4.
The working mechanism and the course of work of the present invention is as follows：The working mechanism and the course of work of the present invention is as follows：The combination
Formula end cap will be combined an interior plate 1 and an outer panel 2 using fastener 15, positioned at interior plate 1 or outer panel 2
On one or more grooves 23 the fuel assignment channel 21, fuel introduction tube road 22, expanding channel 26 and the fuel that constitute draw
Pipeline 24 collectively forms the fuel channel system inside end cover body 3, and seal enables fuel channel system to close.Fuel by
External fuel pipeline 13 enters the fuel channel system of combined type cover internal, and fuel is divided by fuel assignment channel 21
Match somebody with somebody, and by the fuel distributed be passed through outside fuel nozzle 4.The fabricated structure provided reduces processing and the dimension of end cap
Accomplish this, improve easy maintenance and the ease for maintenance of structure.
Claims (5)
1. a kind of combined type end cap for gas-turbine combustion chamber, the end cap contains end cover body (3) and installed in end cap
Multiple fuel nozzles (4) and external fuel pipeline (13) in main body (3), it is characterised in that：The end cover body (3) includes interior
Side plate (1), outer panel (2), at least one fuel introduction tube road (22) and multiple fuel draw pipeline (24)；The interior plate
(1) it is concentrically inserted in outer panel (2), both are linked together using fastener；In the outer surface of interior plate or outer panel
Inner surface is provided with least one groove (23), groove (23) the composition inner fuel assignment channel (21)；Described fuel draws
Enter pipeline (22) to be arranged at the top of outer panel (2), fuel draws the bottom that pipeline (24) is arranged on interior plate (1), fuel is introduced
Pipeline (22) is drawn pipeline (24) by fuel assignment channel (21) and fuel and is connected, and fuel is drawn pipeline (24) and sprayed with fuel
Mouth (4) is connected.
2. a kind of combined type end cap for gas-turbine combustion chamber as claimed in claim 1, it is characterised in that：In interior plate
Outer surface or outer panel inner surface be provided with least two grooves (16), seal is placed in a groove.
3. a kind of combined type end cap for gas-turbine combustion chamber according to claim 1, it is characterised in that：The combustion
It is 1~3 to expect assignment channel (21).
4. a kind of combined type end cap for gas-turbine combustion chamber as described in claims 1 to 3 any claim, it is special
Levy and be：There is expanding channel (26) between the fuel assignment channel (21) and described fuel introduction tube road (22).
5. a kind of combined type end cap for gas-turbine combustion chamber as described in claims 1 to 3 any claim, it is special
Levy and be：Each fuel assignment channel (21) is drawn pipeline (24) with least two fuel and is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510142195.8A CN104776447B (en) | 2015-03-27 | 2015-03-27 | A kind of combined type end cap for gas-turbine combustion chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510142195.8A CN104776447B (en) | 2015-03-27 | 2015-03-27 | A kind of combined type end cap for gas-turbine combustion chamber |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104776447A CN104776447A (en) | 2015-07-15 |
| CN104776447B true CN104776447B (en) | 2017-08-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510142195.8A Active CN104776447B (en) | 2015-03-27 | 2015-03-27 | A kind of combined type end cap for gas-turbine combustion chamber |
Country Status (1)
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| CN (1) | CN104776447B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6883329B1 (en) * | 2003-01-24 | 2005-04-26 | Power Systems Mfg, Llc | Method of fuel nozzle sizing and sequencing for a gas turbine combustor |
| CN102022733A (en) * | 2009-09-16 | 2011-04-20 | 通用电气公司 | Fuel nozzle cup seal |
| CN102192506A (en) * | 2010-02-26 | 2011-09-21 | 通用电气公司 | Turbine combustor end cover |
| CN102589004A (en) * | 2011-01-07 | 2012-07-18 | 通用电气公司 | End cover of combustion chamber without welding or brazing |
| CN102607065A (en) * | 2011-01-18 | 2012-07-25 | 通用电气公司 | Gas turbine combustor endcover assembly with integrated flow restrictor and manifold seal |
| JP2014145322A (en) * | 2013-01-30 | 2014-08-14 | Hitachi Ltd | Gas turbine combustor |
| CN204830034U (en) * | 2015-03-27 | 2015-12-02 | 北京华清燃气轮机与煤气化联合循环工程技术有限公司 | A combination formula end cover for combustion chamber |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9366437B2 (en) * | 2012-12-20 | 2016-06-14 | General Electric Company | System for reducing flame holding within a combustor |
-
2015
- 2015-03-27 CN CN201510142195.8A patent/CN104776447B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6883329B1 (en) * | 2003-01-24 | 2005-04-26 | Power Systems Mfg, Llc | Method of fuel nozzle sizing and sequencing for a gas turbine combustor |
| CN102022733A (en) * | 2009-09-16 | 2011-04-20 | 通用电气公司 | Fuel nozzle cup seal |
| CN102192506A (en) * | 2010-02-26 | 2011-09-21 | 通用电气公司 | Turbine combustor end cover |
| CN102589004A (en) * | 2011-01-07 | 2012-07-18 | 通用电气公司 | End cover of combustion chamber without welding or brazing |
| CN102607065A (en) * | 2011-01-18 | 2012-07-25 | 通用电气公司 | Gas turbine combustor endcover assembly with integrated flow restrictor and manifold seal |
| JP2014145322A (en) * | 2013-01-30 | 2014-08-14 | Hitachi Ltd | Gas turbine combustor |
| CN204830034U (en) * | 2015-03-27 | 2015-12-02 | 北京华清燃气轮机与煤气化联合循环工程技术有限公司 | A combination formula end cover for combustion chamber |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104776447A (en) | 2015-07-15 |
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| PB01 | Publication | ||
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Combined type end cover for gas turbine combustion chamber Effective date of registration: 20171115 Granted publication date: 20170825 Pledgee: Tsinghua Holdings Co., Ltd. Pledgor: Beijing Huatsing Gas Turbine & IGCC Technology Co., Ltd. Registration number: 2016990000853 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20191211 Granted publication date: 20170825 Pledgee: Tsinghua Holdings Co., Ltd. Pledgor: Beijing Huatsing Gas Turbine & IGCC Technology Co., Ltd. Registration number: 2016990000853 |