CN109764359B - Combustion chamber head assembly structure, combustion chamber and aeroengine - Google Patents
Combustion chamber head assembly structure, combustion chamber and aeroengine Download PDFInfo
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- CN109764359B CN109764359B CN201711108381.5A CN201711108381A CN109764359B CN 109764359 B CN109764359 B CN 109764359B CN 201711108381 A CN201711108381 A CN 201711108381A CN 109764359 B CN109764359 B CN 109764359B
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- combustion chamber
- chamber head
- head
- assembly structure
- connecting piece
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Abstract
The invention discloses a combustion chamber head assembly structure, a combustion chamber and an aeroengine, and relates to the technical field of gas turbines. The combustion chamber head assembly structure comprises a combustion chamber head and a connecting part used for being fixed with the flame tube, wherein the combustion chamber head is connected with the connecting part and has a rotating gap relative to the connecting part in the circumferential direction of the combustion chamber head. According to the combustion chamber head assembly structure provided by the technical scheme, the combustion chamber head is connected with the connecting piece and has a certain rotation allowance, so that the stress of the combustion chamber head is improved, and the combustion chamber head can be replaced more conveniently after being damaged.
Description
Technical Field
The invention relates to the field of gas turbine engines, in particular to a combustion chamber head assembly structure, a combustion chamber and an aeroengine.
Background
The head of the engine combustion chamber is assembled on the flame tube, and the head is welded on the head switching section of the flame tube to connect the head and the flame tube.
The inventors found that at least the following problems exist in the prior art: the head and the flame tube connected in the mode are required to be repaired due to the fact that the flame tube is required to be repaired due to the fact that the head is not detachable in the connecting mode when the head is damaged, the repair difficulty is increased, and the repair cost is improved.
Disclosure of Invention
One of the purposes of the invention is to provide a combustion chamber head assembly structure, a combustion chamber and an aeroengine, which are used for optimizing the installation of the existing combustion chamber head.
In order to achieve the above purpose, the present invention provides the following technical solutions:
the invention provides a combustion chamber head assembly structure which comprises a combustion chamber head and a connecting part used for being fixed with a flame tube, wherein the combustion chamber head is connected with the connecting part, and a rotating gap is formed between the combustion chamber head and the connecting part in the circumferential direction of the combustion chamber head.
In an alternative embodiment, the connecting component comprises a connecting piece, a head switching section and a limiting component, the combustion chamber head is rotatably connected with the connecting piece, the head switching section is connected with the connecting piece, and the limiting component is arranged on the connecting piece and used for limiting the rotation range of the combustion chamber head relative to the connecting piece.
In an alternative embodiment, the edge of the combustion chamber head is provided with a protruding portion far away from the center of the combustion chamber head, the connecting piece is provided with a groove, and the protruding portion of the combustion chamber head is arranged in the groove.
In an alternative embodiment, the limiting component comprises a rod, the rod extends into the groove, and the rod is arranged in pairs on two sides of the protruding portion in the circumferential direction of the head of the combustion chamber.
In an alternative embodiment, the connector further comprises a notch in communication with the recess, the boss being mounted into the recess via the notch.
In an alternative embodiment, two or more protrusions are arranged on the edge of the combustion chamber head, and the protrusions are arranged at intervals.
In alternative embodiments, the boss is integral with or removably connected to the combustion chamber head.
In an alternative embodiment, the head adapter section is detachably connected to the connecting piece via the rod.
In an alternative embodiment, the head adapter section is detachably connected to the connection piece.
Another embodiment of the present invention provides a combustion chamber, including a combustion chamber head assembly structure provided by any one of the aspects of the present invention.
In an alternative embodiment, the connecting member is welded to the flame tube.
A further embodiment of the invention provides an aeroengine comprising a combustion chamber according to any of the aspects of the invention.
Based on the technical scheme, the embodiment of the invention at least has the following technical effects:
according to the combustion chamber head assembly structure provided by the technical scheme, the combustion chamber head is connected with the connecting piece and has a certain rotation allowance, so that the stress of the combustion chamber head is improved; the head of the combustion chamber can be independently disassembled, and the head of the combustion chamber can be more conveniently replaced after being damaged.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiments of the invention and together with the description serve to explain the invention and do not constitute a limitation on the invention. In the drawings:
FIG. 1 is a schematic view of a combustion chamber head assembly structure provided by an embodiment of the present invention installed in a casing;
FIG. 2 is a schematic cross-sectional view of a combustion chamber head assembly structure provided in an embodiment of the present invention;
FIG. 3 is a perspective view of a combustion chamber head assembly according to an embodiment of the present invention;
FIG. 4 is a perspective view of a head adapter section of a combustion chamber head assembly structure according to an embodiment of the present invention;
FIG. 5 is a schematic perspective view of a connecting piece of a combustion chamber head assembly structure according to an embodiment of the present invention;
FIG. 6 is a schematic perspective view of a connecting piece of a combustion chamber head assembly structure according to an embodiment of the present invention;
FIG. 7 is a perspective view of a combustion chamber head and connector assembly of a combustion chamber head assembly structure according to an embodiment of the present invention;
FIG. 8 is a perspective view of a combustion chamber head and connector assembly in place of a combustion chamber head assembly structure provided by an embodiment of the present invention;
FIG. 9 is a schematic perspective view of a head assembly structure for a combustion chamber according to an embodiment of the present invention.
Detailed Description
The technical scheme provided by the invention is described in more detail below with reference to fig. 1 to 9.
Referring to fig. 1 and 2, an embodiment of the present invention provides a combustion chamber head assembly structure, including a combustion chamber head 1 and a connection member 2 for fixing with a flame tube 3, the combustion chamber head 1 being connected with the connection member 2 and the combustion chamber head 1 having a rotation gap in a circumferential direction thereof.
After the combustion chamber head 1 is in place, the combustion chamber head 1 cannot be separated from the connecting member 2, but the combustion chamber head 1 can have a certain rotational margin with respect to the connecting member 2. There are various ways of realizing that the combustion chamber head 1 is connected with the connecting member 2 and that the combustion chamber head 1 can have a certain rotation range with respect to the connecting member 2, one way is to rotatably connect the combustion chamber head 1 with the connecting member 2, but a rotation limiting structure is provided to limit the rotation range thereof. Alternatively, a plug-in fitting structure is provided in the radial direction of the combustion chamber head 1 and the connecting part 2, which has a certain installation gap that enables the combustion chamber head 1 to have a rotational range around its own circumferential direction.
In this embodiment, the connection between the combustion chamber head 1 and the connecting member 2 is achieved by the following structure. Referring to fig. 2 and 4, the connection part 2 includes a connection member 21, a head adapter 22, and a limiting member 24, and the combustion chamber head 1 is rotatably connected to the connection member 21. The head adapter 22 is connected to the connector 21, and the limiting member 24 is used to limit the rotation range of the combustion chamber head 1 relative to the connector 21. The limiting member 24 is provided to the connector 21. In this embodiment, the limiting member 24 is fixed to the head adapter 24, and the limiting member 24 is detachably connected to the connecting member.
According to the combustion chamber head assembly structure provided by the technical scheme, the combustion chamber head 1 is rotatably connected with the connecting piece 21, and the limiting parts 24 for limiting the combustion chamber head 1 are arranged separately, so that the structure of each part is easier to process and manufacture.
Referring to fig. 2, 3 and 5, the edge of the combustion chamber head 1 is provided with a protrusion 11 away from the center of the combustion chamber head 1, the connection member 21 is provided with a groove 23, and the protrusion 11 of the combustion chamber head 1 is provided in the groove 23.
The boss 11 protrudes in a direction away from the center of the combustion chamber head 1, i.e., to the outside of the combustion chamber head 1, the boss 11 can be easily fitted into the groove 23, and the boss 11 can rotate in the groove 23 with the axis of the combustion chamber head 1 as the rotation center. The boss 11 serves to be embedded in the connector 21 and to limit the range of rotation of the combustion chamber head 1.
Referring to fig. 4, the structure of the stopper 24 is described below. The limiting member 24 includes a rod extending into the groove 23, and the rod is disposed in pairs on both sides of the boss 11 in the circumferential direction of the combustion chamber head 1.
One pair of rods, namely two rods, limit one protruding part 11, and if a plurality of protruding parts 11 are arranged at the edge of the combustion chamber head 1, a plurality of pairs of rods can be arranged; of course, in the case of having a plurality of bosses 11, a pair of bars may be provided on both sides in the circumferential direction of one of the bosses 11, or on the Zhou Xiangshan side of a part of the bosses 11.
In this embodiment, two protrusions 11 are provided on the edge of the combustion chamber head 1, but only a pair of bars are provided to limit the rotation range of the protrusions 11. The number of the protruding portions 11 is greater than 1, and the protruding portions 11 may be uniformly distributed or asymmetrically distributed, and the protruding portions 11 are not limited to the distribution manner shown in fig. 3.
The manner in which the combustion chamber head 1 is connected to the boss 11 is described below. The boss 11 is integral with or removably connected to the combustion chamber head 1. In this embodiment, the boss 11 is integrated with the combustion chamber head 1, so that the number of installation steps can be reduced, and the integration level of the assembly structure of the combustion chamber head can be improved. It will be appreciated that the boss 11 may be removably connected to the chamber head 1, such as by having the boss 11 and chamber head 1 separate components, and by having the boss 11 mounted in the recess 23 and then having the boss 11 removably connected to the chamber head 1. This embodiment also enables the connection between the combustion chamber head 1 and the connecting member 2.
As described above, the head adapter 22 includes a rod for restricting the rotation of the combustion chamber head 1 while connecting the connecting member 21 and the head adapter 22. Fig. 4 shows a structural distribution of the bars of the head changeover section 22, the number of bars being equal to or greater than 2. To limit the rotation of the combustion chamber head 1, it may be arranged on both sides of one boss 11 or on a single side of several bosses 11 may be selected. To ensure the fixation of the head adapter 22 to the connecting piece 21, the rod can also be arranged separately in a position other than the above-mentioned position. The bars are not limited to the distribution shown in fig. 4.
Referring to fig. 5, the connector 21 includes a recess 23 and a hole 26; the groove 23 is used for installing the combustion chamber head 1 and is matched with the bulge 11; the hole 26 is used for connecting the connecting piece 21 with the head adapter section 22, and is matched with the rod piece. Fig. 5 shows a construction of the connecting piece 21 with its hole 26 matching the bar shown in fig. 4 and with the groove 23 matching the boss 11 shown in fig. 3.
The assembly process of the combustion chamber head assembly structure is as follows: the boss 11 on the combustion chamber head 1 is aligned with the groove 23 on the connector 21, and after the combustion chamber head 1 is placed in the connector 21, the combustion chamber head 1 rotates in the connector 21, so that the boss on the combustion chamber head 1 is located between the holes 26 on the connector 21, and the position of the combustion chamber head 1 is primarily determined, as shown in fig. 6. The rod member of the head adapter 22 passes through the hole 26 of the connecting member 21 provided with the combustion chamber head 1 to limit the rotation range of the combustion chamber head 1, and the connecting member 21 is fixed to the head adapter 22 by a nut, as shown in fig. 7 to 9.
Referring to fig. 8, further, in order to facilitate the installation of the combustion chamber head 1 and the connection member 21, the connection member 21 further includes a notch 25 communicating with the groove 23, and the boss 11 is installed into the groove 23 via the notch 25. The number and distribution of the indentations 25 are such that the mounting requirements of the protrusions 11 are met.
In this embodiment, the head adapter 22 is detachably connected to the connecting member 21 by a rod. The rod piece plays a role in limiting the rotation range of the protruding part 11 and detachably connecting the connecting piece 21 with the head adapter section 22, so that the number of parts is simplified, and the assembly structure of the head of the combustion chamber is lighter.
It will be appreciated that the head adapter 22 may be detachably connected to the connector 21 using other separate structures.
The combustion chamber head assembly structure provided by the present embodiment is described in detail below with reference to the accompanying drawings.
Referring to fig. 1 and 2, fig. 1 shows the position of a combustion chamber head assembly structure in a combustion chamber. The combustion chamber head assembly is housed inside the casing 4 at the upstream inlet of the flame tube 3. FIG. 2 shows the composition of the combustion chamber head assembly structure: it comprises a head adapter section 22, a connecting piece 21 and a combustion chamber head 1. The combustion chamber head 1 is inserted into a connecting piece 21, and the connecting piece 21 is connected to a head adapter 22.
A circumferential groove 23 is formed on one side of the connecting piece 21, and the structural size of the circumferential groove is matched with that of the protruding part 11 of the combustion chamber head 1, so that the protruding part 11 of the combustion chamber head 1 can be installed in the groove 23 of the connecting piece 21, after the protruding part 11 is installed in place, the combustion chamber head 1 is embedded into the connecting piece 21 and cannot be separated, and the combustion chamber head 1 can rotate by a certain amount relative to the connecting piece 21, and particularly, the rotation amount of the combustion chamber head 1 is limited by a limiting part 24. Specifically, the holes 26 are formed at the corresponding positions of the two side end surfaces of the connecting piece 21, and the limiting component 24 is matched with the size of the structure of the holes 26, so that the limiting component 24 can pass through the holes 26 on the connecting piece 21. The limiting component 24 of the head adapter section 22 is installed in the opening 26 on the connecting piece 21, and the limiting component 24 limits the position of the protruding part 11 of the combustion chamber head 1, so that the combustion chamber head 1 has a certain rotatable amount in the circumferential direction. The end of the limiting member 24 is threaded, and the assembly structure is fixed by tightening a nut.
According to the technical scheme, the head is installed and rotated to be limited mainly through the structures of the protruding portion 11, the groove 23, the limiting component 24 and the like, the non-detachable connection mode such as welding is not adopted, and after assembly is completed, the detachable type burner has good detachability, and replacement of the burner head 1 can be achieved simply and conveniently. When the combustion chamber head 1 is damaged, the combustion chamber head 1 can be repaired after being replaced, so that the repair of the whole flame tube 3 is avoided, the repair cost is reduced, and the economic benefit is improved.
Another embodiment of the present invention provides a combustion chamber, including a combustion chamber head assembly structure provided by any one of the aspects of the present invention.
Referring to fig. 1, the combustion chamber includes a casing 4, a flame tube 3 provided inside the casing 4, and a combustion chamber head assembly structure mounted to the flame tube 3. The combustion chamber head assembly structure includes a combustion chamber head 1 and a connecting member 2. In this embodiment, the connection member 2 specifically includes a connection member 21 and a head adapter 22.
The casing 4 forms an air flow channel of the combustion chamber as part of the engine's bearing system. The flame tube 3 is a place where combustion chemical reaction is performed, and is a heated structure. The combustion chamber head 1 is used for providing a stable combustion area to ensure that the combustion performance requirement is met, and the head adapter section 22 is used for connecting the inner ring and the outer ring of the flame tube 3 and installing the combustion chamber head 1.
The combustion chamber provided by the technical scheme realizes reliable assembly of the head and the flame tube 3 and has good detachability.
In this embodiment, the connecting member 2 is welded to the flame tube 3.
A further embodiment of the invention provides an aeroengine comprising a combustion chamber according to any of the aspects of the invention.
In the description of the present invention, it should be understood that the terms "center," "longitudinal," "lateral," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, merely to facilitate description of the present invention and simplify the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the protection of the present invention.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may be modified or some technical features may be replaced with others, which may not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A combustion chamber head assembly structure characterized by comprising a combustion chamber head (1) and a connecting member (2) for fixing with a flame tube (3), wherein the combustion chamber head (1) is connected with the connecting member (2) and the combustion chamber head (1) has a rotational clearance relative to the connecting member (2) in a circumferential direction thereof so that the combustion chamber head (1) is connected with the connecting member (2) and has a rotational margin;
the connecting part (2) comprises a connecting piece (21), a head adapter section (22) and a limiting part (24); the combustion chamber head (1) is rotatably connected with the connecting piece (21), the head switching section (22) is connected with the connecting piece (21), and the limiting component (24) is arranged on the connecting piece (21) and used for limiting the rotation range of the combustion chamber head (1) relative to the connecting piece (21);
the edge of the combustion chamber head (1) is provided with a protruding portion (11) far away from the center of the combustion chamber head (1), the connecting piece (21) is provided with a groove (23), and the protruding portion (11) of the combustion chamber head (1) is arranged in the groove (23).
2. The combustion chamber head assembly structure according to claim 1, wherein the stopper member (24) includes a rod member which extends into the groove (23), and the rod member is provided in pairs on both sides of the boss portion (11) in the circumferential direction of the combustion chamber head (1).
3. The combustion chamber head fitting structure according to claim 1, characterized in that the connecting member (21) further includes a notch (25) communicating with the groove (23), the boss (11) being fitted into the groove (23) via the notch (25).
4. The combustion chamber head assembly structure according to claim 1, characterized in that the boss (11) is integral with or detachably connected to the combustion chamber head (1).
5. The combustion chamber head assembly structure according to claim 1, wherein two or more of the protruding portions (11) are provided at an edge of the combustion chamber head (1), and the protruding portions (11) are provided at intervals.
6. The combustion chamber head assembly structure according to claim 1, wherein the head adapter section (22) is detachably connected to the connecting member (21).
7. The combustion chamber head assembly structure according to claim 2, wherein the head adapter section (22) is detachably connected with the connecting piece (21) through the rod.
8. A combustion chamber comprising the combustion chamber head assembly structure of any one of claims 1-7.
9. A combustion chamber according to claim 8, characterized in that the connecting part (2) is welded to the flame tube (3).
10. An aircraft engine, characterized by comprising a combustion chamber according to claim 8 or 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711108381.5A CN109764359B (en) | 2017-11-09 | 2017-11-09 | Combustion chamber head assembly structure, combustion chamber and aeroengine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711108381.5A CN109764359B (en) | 2017-11-09 | 2017-11-09 | Combustion chamber head assembly structure, combustion chamber and aeroengine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109764359A CN109764359A (en) | 2019-05-17 |
| CN109764359B true CN109764359B (en) | 2023-08-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711108381.5A Active CN109764359B (en) | 2017-11-09 | 2017-11-09 | Combustion chamber head assembly structure, combustion chamber and aeroengine |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114459057B (en) * | 2022-01-18 | 2023-03-24 | 中国航发四川燃气涡轮研究院 | Ceramic-based flame tube connecting structure and gas turbine engine combustor |
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| EP2518408A2 (en) * | 2011-04-28 | 2012-10-31 | Rolls-Royce plc | A head part of an annular combustion chamber |
| CN104400104A (en) * | 2014-11-28 | 2015-03-11 | 株洲钻石切削刀具股份有限公司 | Rotational cutting tool capable of assembling and disassembling |
| FR3015641A1 (en) * | 2013-12-20 | 2015-06-26 | Snecma | INJECTION DEVICE IN A TURBOMACHINE |
| CN204554873U (en) * | 2015-03-11 | 2015-08-12 | 中航商用航空发动机有限责任公司 | The combustion chamber of swirler syndeton and aero-engine |
| CN206001469U (en) * | 2016-06-21 | 2017-03-08 | 中国航空工业集团公司沈阳发动机设计研究所 | A kind of engine chamber flame tube head and the attachment structure of cylinder |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7690207B2 (en) * | 2004-08-24 | 2010-04-06 | Pratt & Whitney Canada Corp. | Gas turbine floating collar arrangement |
| US7926280B2 (en) * | 2007-05-16 | 2011-04-19 | Pratt & Whitney Canada Corp. | Interface between a combustor and fuel nozzle |
| GB2499196B (en) * | 2012-02-07 | 2017-08-02 | Rolls Royce Plc | Combustor head arrangement |
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2017
- 2017-11-09 CN CN201711108381.5A patent/CN109764359B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2518408A2 (en) * | 2011-04-28 | 2012-10-31 | Rolls-Royce plc | A head part of an annular combustion chamber |
| FR3015641A1 (en) * | 2013-12-20 | 2015-06-26 | Snecma | INJECTION DEVICE IN A TURBOMACHINE |
| CN104400104A (en) * | 2014-11-28 | 2015-03-11 | 株洲钻石切削刀具股份有限公司 | Rotational cutting tool capable of assembling and disassembling |
| CN204554873U (en) * | 2015-03-11 | 2015-08-12 | 中航商用航空发动机有限责任公司 | The combustion chamber of swirler syndeton and aero-engine |
| CN206001469U (en) * | 2016-06-21 | 2017-03-08 | 中国航空工业集团公司沈阳发动机设计研究所 | A kind of engine chamber flame tube head and the attachment structure of cylinder |
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| CN109764359A (en) | 2019-05-17 |
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