Variable geometry swirler with adjustable swirl angle
阅读说明:本技术 一种旋流角可调的变几何旋流器 (Variable geometry swirler with adjustable swirl angle ) 是由 杨家龙 郑洪涛 孔龙 游滨川 李奥宇 巩耀禛 赵宁波 李智明 于 2019-11-08 设计创作,主要内容包括:本发明属于燃气轮机技术领域,具体涉及可以改变二级旋流叶片角度的一种旋流角可调的变几何旋流器。本发明包括一级旋流器1,二级旋流器2,二级旋流器叶片30,旋转顶轴40,二级旋流器的外壁5以及传动盘6,二级旋流器叶片30以可旋转方式安装于一级旋流器1的外壁与二级旋流器2的外壁之间。所述二级旋流器叶片30的顶边和底边相应位置处分别具有上轴孔31和下轴孔34,所述一级旋流器1的环形壁21外表面上周向均匀地设置有向外突出的旋转底轴22。本发明的二级旋流器叶片可以转动一定角度,从而改变旋流器叶片角,改善燃气轮机燃烧室变工况性能,并且结构简单,易于加工。(The invention belongs to the technical field of gas turbines, and particularly relates to a variable geometry swirler with an adjustable swirl angle, wherein the variable geometry swirler can change the angle of a secondary swirl vane. The cyclone separator comprises a primary cyclone 1, a secondary cyclone 2, secondary cyclone blades 30, a rotating top shaft 40, an outer wall 5 of the secondary cyclone and a transmission disc 6, wherein the secondary cyclone blades 30 are rotatably arranged between the outer wall of the primary cyclone 1 and the outer wall of the secondary cyclone 2. The secondary cyclone vanes 30 are respectively provided with an upper shaft hole 31 and a lower shaft hole 34 at corresponding positions of the top edge and the bottom edge, and the outer surface of the annular wall 21 of the primary cyclone 1 is uniformly provided with a rotating bottom shaft 22 which protrudes outwards in the circumferential direction. The two-stage swirler vane can rotate a certain angle, so that the swirler vane angle is changed, the variable working condition performance of the combustion chamber of the gas turbine is improved, and the two-stage swirler vane has a simple structure and is easy to process.)
1. The variable geometry swirler with the adjustable swirl angle comprises a primary swirler (1), a secondary swirler (2), secondary swirler vanes (30), a rotating top shaft (40), an outer wall (5) of the secondary swirler and a transmission disc (6), and is characterized in that the secondary swirler vanes (30) are rotatably arranged between the outer wall of the primary swirler (1) and the outer wall of the secondary swirler (2).
2. The variable geometry swirler with the adjustable swirl angle as claimed in claim 1, characterized in that the secondary swirler vanes (30) have upper and lower axial holes (31, 34) at corresponding positions on the top and bottom edges, the annular wall (21) of the primary swirler (1) is circumferentially and uniformly provided with outwardly protruding rotating bottom shafts (22), the rotating bottom shafts (22) are inserted into the lower axial holes (34) on the bottom edges of the secondary swirler vanes (30) to form a rotating fit, the annular wall (52) of the secondary swirler (2) is circumferentially and uniformly provided with rotating top shafts (40) protruding into the annular wall (52), the rotating top shafts (40) are inserted into the upper axial holes (31) of the secondary swirler vanes (30) to form a rotating fit, and the two rotating fits enable the secondary swirler vanes (30) to rotate around the common axis (33) of the upper axial holes (31) and the lower axial holes (34) And (6) moving.
3. The variable geometry swirler with the adjustable swirl angle of claim 1, characterized in that one end of the top edge of the secondary swirler vane (30) is provided with a track shaft (32), the inner wall surface of the annular wall (62) of the driving disc (6) is provided with a track groove (63), and the track shaft (32) is inserted into the track groove (63) and can slide along the track groove (63).
4. The cyclone angle-adjustable variable geometry swirler of claim 1, wherein the rotating top shaft (40) is composed of a hexagonal head (41), a threaded section (42) and a rotating shaft section (43), the rotating top shaft (40) penetrates through a threaded hole (53) from outside to inside, the threaded section (42) and the threaded hole (53) on the outer wall of the secondary cyclone form a threaded fit, the rotating shaft section (43) is inserted into the upper shaft hole (31) of the secondary cyclone vane (30) to form a rotating fit, and the upper shaft hole (31) and the lower shaft hole (34) are arranged at middle positions of the top edge and the bottom edge of the vane (30).
5. The swirler with the adjustable swirl angle and the variable geometry according to claim 1 is characterized in that the rotating bottom shafts (22) are welded on the outer wall surface of the primary swirler (1), the number of the rotating top shafts (40) is 10, and the number of the rotating bottom shafts (22) is 10.
Technical Field
The invention belongs to the technical field of gas turbines, and particularly relates to a variable geometry swirler with an adjustable swirl angle, wherein the variable geometry swirler can change the angle of a secondary swirl vane.
Background
The variable working condition performance of the gas turbine is an important index for evaluating the quality of the gas turbine. When the working condition is changed, the air and fuel flow of the combustion chamber of the gas turbine is changed, and the mixing performance of the cyclone is required to be capable of adapting to the change of the working condition.
The parameter of traditional swirler is fixed, can not follow gas turbine combustion chamber operating mode and change and carry out corresponding adjustment, can reduce mixing and combustion efficiency to a certain extent, can make the fuel spray to the combustion chamber internal face even to the ablation combustion chamber causes potential danger.
Since the swirler of other equipment than a gas turbine needs to adjust the swirl angle, there is a need for a swirler capable of adjusting the swirl angle of the vanes.
Disclosure of Invention
The invention aims to provide a variable geometry swirler with an adjustable swirl angle.
The purpose of the invention is realized as follows:
a variable geometry swirler with an adjustable swirl angle comprises a
The
One end of the top edge of the
The rotating
The
The invention has the beneficial effects that: the two-stage swirler vane can rotate a certain angle, so that the swirler vane angle is changed, the variable working condition performance of the combustion chamber of the gas turbine is improved, and the two-stage swirler vane has a simple structure and is easy to process.
Drawings
FIG. 1 is a schematic diagram of the overall structure of a variable geometry swirler with adjustable swirl angle;
FIG. 2 is a schematic view of a primary swirler of a variable geometry swirler with adjustable swirl angle;
FIG. 3 is a schematic view of the secondary swirler vanes of a variable geometry swirler with adjustable swirl angles;
FIG. 4 is a schematic diagram of a rotating tip axis of a variable geometry swirler with adjustable swirl angle;
FIG. 5 is a schematic outer wall view of a secondary cyclone of a variable geometry cyclone with adjustable swirl angle;
FIG. 6 is a schematic view of a drive plate of a variable geometry swirler with adjustable swirl angle;
FIG. 7 is a schematic view of the mounting of the secondary swirler vanes relative to the primary swirler of a variable geometry swirler with an adjustable swirl angle.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
1. A primary swirler; 2. a secondary cyclone; 30. secondary swirler vanes; 40. rotating the top shaft; 5. the outer wall of the secondary cyclone; 6. a drive plate; 21. an annular wall of the primary swirler; 22. rotating the bottom shaft; 31. an upper shaft hole; 32. a trajectory axis; 33. a common axis; 34. a lower shaft hole; 41. a hexagonal head; 42. a threaded segment; 43. a shaft section; 51. a flange on the outer wall of the secondary cyclone; 52. an annular wall of the secondary cyclone; 53. a threaded hole; 61. a flange of the transmission disc; 62. an annular wall of the drive disk; 63. a track groove.
Skilled artisans appreciate that elements in the figures are illustrated for simplicity and clarity and have not necessarily been drawn to scale. For example, the dimensions of some of the elements in the figures may be exaggerated relative to other elements to help improve the understanding of the embodiments of the present invention.
The invention may be better understood by referring to the following description in conjunction with the accompanying drawings, in which like reference numerals are used throughout the figures to indicate like or similar parts. The accompanying drawings, which are incorporated in and form a part of this specification, illustrate preferred embodiments of the present invention and, together with the detailed description, serve to further explain the principles and advantages of the invention.
The following presents a simplified summary of the invention in order to provide a basic understanding of some aspects of the invention. It should be understood that this summary is not an exhaustive overview of the invention. It is not intended to identify key or critical elements of the invention or to delineate the scope of the invention. Its sole purpose is to present some concepts in a simplified form as a prelude to the more detailed description that is discussed later.
The invention provides a variable geometry swirler with an adjustable swirl angle, which comprises: the cyclone comprises a primary cyclone body, a secondary cyclone body, a plurality of blades and a blade angle adjusting device, wherein the blades of the secondary cyclone body are rotatably arranged between the outer wall of the primary cyclone body and the outer wall of the secondary cyclone body, and the blade angle adjusting device drives the blades of the secondary cyclone body to rotate by a specified angle, so that the swirl angle of the blades of the secondary cyclone body is changed.
Furthermore, the top side and the bottom side of the second-stage cyclone blade are respectively provided with an upper shaft hole and a lower shaft hole at corresponding positions, the outer surface of the annular wall of the first-stage cyclone is uniformly provided with a rotary bottom shaft protruding outwards in the circumferential direction, the rotary bottom shaft is inserted into the lower shaft hole at the bottom side of the second-stage cyclone blade to form rotary fit, the annular wall of the second-stage cyclone is uniformly provided with a rotary top shaft protruding into the annular wall in the circumferential direction, the rotary top shaft is inserted into the upper shaft hole of the second-stage cyclone blade to form rotary fit, and the two rotary fits enable the second-stage cyclone blade to rotate around the common axis of the upper shaft hole and the lower shaft hole so as to change the rotational flow.
Further, the blade angle adjusting device comprises a transmission disc connected with the secondary cyclone blades and a hydraulic device for driving the transmission disc to rotate, a track shaft is arranged at one end of the top edge of each secondary cyclone blade, a track groove is formed in the inner wall surface of the annular wall of the transmission disc, the track shaft is inserted into the track groove and can slide along the track groove, and when the hydraulic device drives the transmission disc to rotate for a specified angle, the track shaft slides in the track groove so as to drive the secondary cyclone blades to rotate for a corresponding angle.
Furthermore, the rotating top shaft consists of a hexagonal head, a thread section and a rotating shaft section, the rotating top shaft penetrates through a threaded hole from outside to inside, the thread section and the threaded hole in the outer wall of the secondary cyclone form threaded fit, and the rotating shaft section is inserted into upper shaft holes of blades of the secondary cyclone to form rotating fit.
These and other advantages of the present invention will become more apparent from the following detailed description of the preferred embodiments of the present invention, taken in conjunction with the accompanying drawings.
Exemplary embodiments of the present invention will be described hereinafter with reference to the accompanying drawings. In the interest of clarity and conciseness, not all features of an actual implementation are described in the specification. It will of course be appreciated that in the development of any such actual embodiment, numerous implementation-specific decisions must be made to achieve the developers' specific goals, such as compliance with system-related and business-related constraints, which will vary from one implementation to another. Moreover, it will be appreciated that such a development effort might be complex and time-consuming, but would nevertheless be a routine undertaking for those of ordinary skill in the art having the benefit of this disclosure.
It should be noted that, in order to avoid obscuring the present invention with unnecessary details, only the device structures and/or processing steps closely related to the solution according to the present invention are shown in the drawings, and other details not so relevant to the present invention are omitted.
The exemplary embodiments of the invention are given below as applied to swirlers for gas turbines, but the swirlers of the invention are not limited to gas turbines and may be applied to other equipment to meet variable swirl angle requirements. As shown in fig. 1, a preferred embodiment of the present invention provides a variable geometry swirler with adjustable swirl angle, comprising: a
Referring to fig. 2 and 7, in the
Referring to fig. 3, the
Referring to fig. 5, the
The following describes how the vane angle adjustment arrangement drives rotation of the
Referring to FIG. 3, the top edge of the
When the swirl angle is adjusted, the driving
The rotation of the
Compared with the prior art, the invention has the advantages that:
the two-stage swirler vane can rotate a certain angle, so that the swirler vane angle is changed, the variable working condition performance of the combustion chamber of the gas turbine is improved, and the two-stage swirler vane has a simple structure and is easy to process.
The above embodiments are only exemplary embodiments of the present invention, but the present invention is not limited to be applied to the combustion chamber of a gas turbine, and can be applied to the swirler of other equipment to achieve the purpose of changing the swirl angle.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention and the advantageous effects thereof have been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that: it is possible to modify the technical solutions described in the foregoing embodiments or to substitute some technical features of the embodiments with equivalents, without departing from the scope of the claims of the present invention.
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