CN204026741U - Flame retaining member and burner - Google Patents
Flame retaining member and burner Download PDFInfo
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- CN204026741U CN204026741U CN201420456124.6U CN201420456124U CN204026741U CN 204026741 U CN204026741 U CN 204026741U CN 201420456124 U CN201420456124 U CN 201420456124U CN 204026741 U CN204026741 U CN 204026741U
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- flame
- plate
- retaining member
- dividing plate
- slit
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Abstract
The utility model relates to a kind of flame retaining member and has used the burner of this flame retaining member, and wherein, flame retaining member is arranged in the leading section of the burner nozzle of burner, possesses: central part is provided with guarantor's flame guided plate in hole; Central part is provided with the dividing plate in hole; Central part is provided with the troll plate in hole, described guarantor for flame guided plate, described dividing plate and described troll plate start to stack gradually configuration from the leading section side of described burner nozzle, for flame, at least one in guided plate, described dividing plate and described troll plate, be provided with slit described guarantor.
Description
Technical field
The utility model relates to a kind of flame retaining member using in gas turbine burner (being designated hereinafter simply as burner) (also referred to as protecting flame device,, keep flame to prevent the member that it extinguishes) and used the burner of this flame retaining member.
Background technology
In the past, burner was standby: the premixed guiding nozzle and the premixed main burner that make fuel and air mix to burn; The guiding nozzle arranging in the inner cylinder portion of burner body; Around this guiding nozzle, separate the main burner of predetermined distance configuration; The guide barrel of guiding air flue is set and forms at the front end outer circumferential side of this guiding nozzle; Connect the guarantor's flame device (flame retaining member) (with reference to patent documentation 1) that arranges and extend towards the jet side (the opening edge side of extension tube) of the main fuel of main burner at the front-end edge of this guide barrel.
In said burner, to protect flame device and be configured between the front-end edge of guide barrel and the opening edge of extension tube, to stop up, its face direction configures along radial direction.Protect flame device and can near protecting flame face, form the low flow velocity region of pilot flame and main flame, and only make main flame stay and protect flame.
Patent documentation
Patent documentation 1: TOHKEMY 2013-152047
But, in above-mentioned patent documentation 1, protect flame device and become high temperature because of the heat from pilot flame, but owing to protecting the structure that does not have releasing heat strain in flame device, so exist the part that thermal stress is high easily to produce the problem of the crackle of low-cycle fatigue, but also have the problem because of high-temperature oxydation reduced thickness.
Utility model content
The utility model proposes in view of existing problem in above-mentioned prior art, and object is to provide a kind of and can prevents the flame retaining member cracking because of thermal stress and use the burner of this flame retaining member.
For this reason, the utility model provides a kind of flame retaining member, and the leading section that it is arranged in the burner nozzle of burner, is characterized in that, possesses: central part is provided with guarantor's flame guided plate in hole; Central part is provided with the dividing plate in hole; Central part is provided with the troll plate in hole, described guarantor for flame guided plate, described dividing plate and described troll plate start to stack gradually configuration from the leading section side of described burner nozzle, for flame, at least one in guided plate, described dividing plate and described troll plate, be provided with slit described guarantor.
On the basis of above-mentioned flame retaining member, preferably: described slit connects towards radial outside from described hole.
On the basis of above-mentioned flame retaining member, preferably: described slit is provided with multiple, described multiple slits equally spaced form on the circumferencial direction of described flame retaining member.
On the basis of above-mentioned flame retaining member, preferably: be provided with slit on described troll plate.
On the basis of above-mentioned flame retaining member, preferably: described slit is provided with multiple, described multiple slits equally spaced form on the circumferencial direction of described troll plate.
On the basis of above-mentioned flame retaining member, preferably: be also provided with multiple grooves on described troll plate, described multiple grooves equally spaced form on the circumferencial direction of described troll plate.
On the basis of above-mentioned flame retaining member, preferably: described multiple grooves and described multiple slit alternate configurations on the circumferencial direction of described troll plate.
On the basis of above-mentioned flame retaining member, preferably: at described guarantor's flame with being provided with slit on guided plate.
On the basis of above-mentioned flame retaining member, preferably: described slit is provided with multiple, described multiple slits are in equally spaced formation on the circumferencial direction of guided plate for described guarantor's flame.
On the basis of above-mentioned flame retaining member, preferably: described guarantor's flame is 1.4～2.0mm with the thickness of slab of guided plate.
On the basis of above-mentioned flame retaining member, preferably: described guarantor's flame is 1.6～1.8mm with the thickness of slab of guided plate.
On the basis of above-mentioned flame retaining member, preferably: be provided with slit on described dividing plate.
On the basis of above-mentioned flame retaining member, preferably: described slit is provided with multiple, described multiple slits equally spaced form on the circumferencial direction of described dividing plate.
On the basis of above-mentioned flame retaining member, preferred: described dividing plate possesses diaphragm body portion and is arranged on multiple dividing plate protuberances of the outer radial periphery of described diaphragm body portion, between adjacent described dividing plate protuberance, be provided with dividing plate paddy portion, be provided with dividing plate fillet part in described dividing plate paddy portion.
On the basis of above-mentioned flame retaining member, preferably: the radius of described dividing plate fillet part is 2～4mm.
In addition, the utility model further provides a kind of burner, and this burner is for above-mentioned flame retaining member.
Utility model effect
According to flame retaining member of the present utility model, can suppress to crack because of thermal stress.And, according to flame retaining member of the present utility model, can also suppress to produce reduced thickness because of high-temperature oxydation.Thus, compared with technology in the past, repairing cost significantly reduces, structure found to have occurred damage after the time that has used 1 inspection and repair shop to maintain in the past, and structure of the present utility model is being used 3 times also not find damage after the time that 1 inspection and repair shop maintains, and maintenance integrality, the degree of 3 times of therefore having repaired cost.
Brief description of the drawings
Fig. 1 is the allocation plan of the burner of an embodiment of the present utility model.
Fig. 2 is the enlarged drawing of the burner of an embodiment of the present utility model.
Fig. 3 is the allocation plan of the flame retaining member of an embodiment of the present utility model.
Fig. 4 (a), (b), (c) are the enlarged drawings of the flame retaining member of an embodiment of the present utility model.
Fig. 5 (a), (b), (c) are the details drawings of the flame retaining member of an embodiment of the present utility model.
Symbol description:
20-flame retaining member
21-troll plate
22-dividing plate
22a-diaphragm body portion
22b-dividing plate protuberance
22c-dividing plate paddy portion
22r-dividing plate fillet part
23-protects flame guided plate
24-slit
25-groove
30-burner
31-burner nozzle
32-gas turbine
33-burner casing
34-turbine casing
35-rotor
Detailed description of the invention
Below, based on accompanying drawing, the flame retaining member to an embodiment of the present utility model and used the burner of this flame retaining member to be elaborated.It should be noted that, the embodiment of below recording is just for illustrating an embodiment of the present utility model, instead of of the present utility model for limiting, in the technical conceive of the present utility model that can understand those skilled in the art, obviously can carry out changing and implementing arbitrarily.
Fig. 1 is the allocation plan of the burner 30 of an embodiment of the present utility model.As shown in Figure 1, burner 30 of the present utility model is the equipment being configured in gas turbine 32, and this gas turbine 32, except possessing burner 30, also possesses turbine casing 34 and rotor 35.Burner 30 possesses burner nozzle 31 and burner casing 33.
Fig. 2 is the enlarged drawing of the burner 30 of an embodiment of the present utility model.This Fig. 2 amplifies by burner 30 independent taking-ups the figure representing from the structure shown in Fig. 1.As shown in Figure 2, be provided with flame retaining member 20 at the leading section of burner nozzle 31.
Fig. 3 is the allocation plan of the flame retaining member 20 of an embodiment of the present utility model.This Fig. 3 amplifies by independent taking-up of a part the figure representing from the structure shown in Fig. 2.As shown in Figure 3, flame retaining member 20 for make from the fuel of burner nozzle 31 with mix, light a fire and generate burning gases from the compressed air (as the dotted line arrows) of compressor (omit diagram), the flame of burning gases is stablized to maintenance, prevent that it from extinguishing.
Fig. 4 (a), (b), (c) are the enlarged drawings of the flame retaining member 20 of an embodiment of the present utility model.Wherein, Fig. 4 (a) takes out flame retaining member 20 separately and represents from the structure shown in Fig. 3, Fig. 4 (b) shows the structure that the flame retaining member 20 in the structure shown in Fig. 3 is observed from A direction, and Fig. 4 (c) shows the structure of the part amplification of flame retaining member 20.
As shown in Fig. 4 (a), left side (the leading section side of the burner nozzle 31) beginning of flame retaining member 20 from figure possesses successively protects guided plate 23, dividing plate 22 and troll plate 21 for flame.Protect guided plate 23, dividing plate 22 and troll plate 21 for flame and carry out laminated configuration and the flame retaining member 20 of constituting layer stack structure.
Fig. 5 (a), (b), (c) are the details drawings of the flame retaining member 20 of an embodiment of the present utility model.In Fig. 5 (a), (b), (c), guided plate 23, dividing plate 22 and the troll plate 21 for guarantor's flame that form flame retaining member 20 are carried out respectively representing separately.That is, Fig. 5 (a) represents to protect guided plate 23 for flame, and Fig. 5 (b) represents dividing plate 22, and Fig. 5 (c) represents troll plate 21.
As shown in Fig. 5 (a), protect flame and be discoideus structure with guided plate 23, be provided with hole at central part, and be provided with multiple puff prots in the outside of central part along circumferencial direction.In addition, at this guarantor's flame, with being provided with multiple slits 24 on guided plate 23, slit 24 is arranged to 8 in the present embodiment, and these 8 slits 24 are being protected flame with equally spaced forming on the circumferencial direction of guided plate 23, and the width of each slit 24 is 0.8mm.And slit 24 is formed through towards radial outside with the hole of the central part of guided plate 23 from protecting flame.
In the present embodiment, by slit 24 is set, in the time making flame retaining member 20 become high temperature because of the burning of gas and fuel, even if there is the part that thermal stress is high, also can utilize slit 24 to alleviate thermal stress, prevent from cracking because of thermal stress.
In addition, in the present embodiment, protect flame and be set as 1.6mm with the thickness of slab of guided plate 23.But, protect flame and be not limited to this with the thickness of slab of guided plate, as long as in the scope of 1.4～2.0mm, be preferably the scope of 1.6～1.8mm.In the past, the thickness of slab of protecting flame guided plate was thinner, for example, adopt the thickness of slab of 1.2mm.In contrast, in the utility model, by being set as 1.4～2.0mm, being preferably set to 1.6～1.8mm with the thickness of slab of guided plate 23 protecting flame, thus, similarly can alleviate thermal stress with the aforementioned mode that slit is set, prevent from cracking because of thermal stress.
As shown in Fig. 5 (b), dividing plate 22 is discoideus structure equally, is provided with hole at central part, and thickness of slab is 0.8mm.And dividing plate 22 possesses the 22a of diaphragm body portion and is arranged on multiple dividing plate protuberance 22b of the outer radial periphery of the 22a of diaphragm body portion, is provided with the dividing plate paddy 22c of portion between adjacent dividing plate protuberance 22b, is provided with dividing plate fillet part 22r at the dividing plate paddy 22c of portion.In the present embodiment, the radius of dividing plate fillet part 22r is set as 3mm.But the radius of dividing plate fillet part is not limited to this, as long as in the scope of 2～4mm.In the present embodiment, by the dividing plate paddy 22c of portion between the dividing plate protuberance 22b at dividing plate 22, dividing plate fillet part 22r is set, similarly can alleviate thermal stress at guarantor's flame by the mode of the thickness of slab that slit or adjustment guarantor flame guided plate are set in guided plate with aforementioned, prevent from cracking because of thermal stress.And, in the utility model, by the radius of dividing plate fillet part 22r is set as to 2～4mm, can more effectively prevent from cracking because of thermal stress.
In addition, flame guided plate 23 is same with protecting, on dividing plate 22, be on the 22a of diaphragm body portion, to be also provided with multiple slits 24 specifically, in the present embodiment, slit 24 on dividing plate 22 is arranged to 8 too, these 8 slits 24 equally spaced form on the circumferencial direction of dividing plate 22, and the width of each slit 24 is 0.8mm.And slit 24 is formed through towards radial outside from the hole of the central part of dividing plate 22.Identical with the effect that guarantor's flame plays with the slit 24 forming on guided plate 23, the slit 24 forming on dividing plate 22 can alleviate thermal stress equally, prevents from cracking because of thermal stress.
As shown in Fig. 5 (c), troll plate 21 is discoideus structure equally, is provided with hole at central part, and thickness of slab is 0.8mm.In addition, be provided with multiple slits 24 and multiple groove 25 on this troll plate 21, multiple slits 24 and multiple groove 25 equally spaced form respectively on the circumferencial direction of troll plate 21, and multiple slit 24 and multiple groove 25 alternate configurations on the circumferencial direction of troll plate 21.Flame guided plate 23 and dividing plate 22 are same with protecting, and the slit 24 arranging on troll plate 21 is also arranged to 8, and the width of each slit 24 is 0.8mm.And slit 24 is formed through towards radial outside from the hole of the central part of troll plate 21.And the number of the groove 25 arranging on troll plate 21 is also 8.
Identical with the effect that guarantor's flame plays with the slit 24 forming on guided plate 23 and dividing plate 22, the slit 24 forming on troll plate 21 can alleviate thermal stress equally, prevents from cracking because of thermal stress.
As mentioned above, the flame retaining member of an embodiment of the present utility model is had been described in detail, but flame retaining member of the present utility model is obviously not limited to the structure of above-mentioned embodiment.Those skilled in the art can suitably change in the scope that does not depart from aim of the present utility model.
For example, as illustration, for guarantor's flame, on guided plate 23, dividing plate 22 and troll plate 21, be all provided with slit 24 in present embodiment, but also can for flame, on guided plate 23, dividing plate 22 and troll plate 21 these threes, all arrange guarantor, as long as slit 24 is set at least one in guided plate 23, dividing plate 22 and troll plate 21 guarantor for flame.And the number that arranges of slit 24 is also not limited to 8, all can greater or less than 8.
In addition, in the present embodiment, the number of the groove 25 arranging on troll plate 21 is also not limited to 8, can suitably change according to the number that arranges of slit 24, also all can greater or less than 8.
Utilizability in industry
Flame retaining member of the present utility model and used the burner of this flame retaining member to be applicable to being applied in the equipment such as gas turbine.
Claims (16)
1. a flame retaining member, the leading section that it is arranged in the burner nozzle of burner, is characterized in that, possesses:
Central part is provided with guarantor's flame guided plate in hole;
Central part is provided with the dividing plate in hole;
Central part is provided with the troll plate in hole,
Described guarantor for flame guided plate, described dividing plate and described troll plate start to stack gradually configuration from the leading section side of described burner nozzle,
For flame, at least one in guided plate, described dividing plate and described troll plate, be provided with slit described guarantor.
2. flame retaining member according to claim 1, is characterized in that,
Described slit connects towards radial outside from described hole.
3. flame retaining member according to claim 2, is characterized in that,
Described slit is provided with multiple, and described multiple slits equally spaced form on the circumferencial direction of described flame retaining member.
4. flame retaining member according to claim 1, is characterized in that,
On described troll plate, be provided with slit.
5. flame retaining member according to claim 4, is characterized in that,
Described slit is provided with multiple, and described multiple slits equally spaced form on the circumferencial direction of described troll plate.
6. flame retaining member according to claim 5, is characterized in that,
On described troll plate, be also provided with multiple grooves, described multiple grooves equally spaced form on the circumferencial direction of described troll plate.
7. flame retaining member according to claim 6, is characterized in that,
Described multiple groove and described multiple slit alternate configurations on the circumferencial direction of described troll plate.
8. flame retaining member according to claim 1, is characterized in that,
At described guarantor's flame with being provided with slit on guided plate.
9. flame retaining member according to claim 8, is characterized in that,
Described slit is provided with multiple, and described multiple slits are in equally spaced formation on the circumferencial direction of guided plate for described guarantor's flame.
10. flame retaining member according to claim 9, is characterized in that,
Described guarantor's flame is 1.4～2.0mm with the thickness of slab of guided plate.
11. flame retaining members according to claim 10, is characterized in that,
Described guarantor's flame is 1.6～1.8mm with the thickness of slab of guided plate.
12. flame retaining members according to claim 1, is characterized in that,
On described dividing plate, be provided with slit.
13. flame retaining members according to claim 12, is characterized in that,
Described slit is provided with multiple, and described multiple slits equally spaced form on the circumferencial direction of described dividing plate.
14. flame retaining members according to claim 12, is characterized in that,
Described dividing plate possesses diaphragm body portion and is arranged on multiple dividing plate protuberances of the outer radial periphery of described diaphragm body portion, between adjacent described dividing plate protuberance, is provided with dividing plate paddy portion, is provided with dividing plate fillet part in described dividing plate paddy portion.
15. flame retaining members according to claim 14, is characterized in that,
The radius of described dividing plate fillet part is 2～4mm.
16. 1 kinds of burners, is characterized in that,
Possesses the flame retaining member described in any one in claim 1～15.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420456124.6U CN204026741U (en) | 2014-08-13 | 2014-08-13 | Flame retaining member and burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420456124.6U CN204026741U (en) | 2014-08-13 | 2014-08-13 | Flame retaining member and burner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204026741U true CN204026741U (en) | 2014-12-17 |
Family
ID=52066594
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420456124.6U Active CN204026741U (en) | 2014-08-13 | 2014-08-13 | Flame retaining member and burner |
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| Country | Link |
|---|---|
| CN (1) | CN204026741U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110651154A (en) * | 2017-08-21 | 2020-01-03 | 三菱日立电力系统株式会社 | Combustor and gas turbine provided with same |
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2014
- 2014-08-13 CN CN201420456124.6U patent/CN204026741U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110651154A (en) * | 2017-08-21 | 2020-01-03 | 三菱日立电力系统株式会社 | Combustor and gas turbine provided with same |
| CN110651154B (en) * | 2017-08-21 | 2022-03-29 | 三菱动力株式会社 | Combustor and gas turbine provided with same |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |