阅读说明：本技术 一种喉道面积可调的旋流器 (Swirler with adjustable throat area ) 是由 郭舒 万云霞 齐健 赵传亮 柴昕 于 2019-09-29 设计创作，主要内容包括：本申请涉及一种喉道面积可调的旋流器,所述旋流器装配于燃烧室火焰筒上,其包括：环状前壁及后壁；设置在前壁和所述后壁之间的多个叶片,所述叶片具有凸出于叶片本体两侧的转动轴,所述转动轴穿过所述第一通孔和第二通孔与所述前壁和所述后壁能够相对转动的连接；齿轮环,所述齿轮环上具有沿周向延伸的条形孔,所述条形孔与所述螺柱配合安装,所述齿轮环与所述前壁能够相对转动的连接；多个齿轮,所述齿轮具有传动孔,所述传动孔用于与所述传动轴连接,所述齿轮配合安装于所述齿轮环,当所述齿轮环相对于所述前壁转动时,所述齿轮能够带动所述叶片偏转。本申请的旋流器可以实现对叶片角度进行无极调节,从而实现对喉道面积和旋流数的无极调节。(The application relates to a throat area adjustable swirler, swirler assembles on the combustor flame tube, and it includes: annular front and rear walls; the blades are provided with rotating shafts protruding out of two sides of the blade body, and the rotating shafts penetrate through the first through holes and the second through holes and are connected with the front wall and the rear wall in a relatively rotatable mode; the gear ring is provided with a strip-shaped hole extending along the circumferential direction, the strip-shaped hole is matched with the stud, and the gear ring is connected with the front wall in a relatively rotatable manner; the gear is provided with a transmission hole which is used for being connected with the transmission shaft, the gear is installed on the gear ring in a matched mode, and when the gear ring rotates relative to the front wall, the gear can drive the blades to deflect. The utility model provides a swirler can realize carrying out electrodeless regulation to the blade angle to realize the electrodeless regulation to throat area and swirl number.)

1. A swirler (10) with adjustable throat area, the swirler (10) being mounted on a combustor basket (20), characterized in that the swirler (2) comprises

A front wall (3), said front wall (3) being annular and said front wall (3) having a plurality of first through holes (32) and at least two studs (31) extending along its axis;

the rear wall (5) is also annular, and a plurality of second through holes (54) are formed in the rear wall (5);

a plurality of blades (4) arranged between the front wall (3) and the rear wall (5), wherein the blades (4) are provided with rotating shafts (42) protruding out of two sides of a blade body (41), and the rotating shafts (42) are connected with the front wall (3) and the rear wall (5) in a relatively rotatable mode through the first through holes (32) and the second through holes (54);

the gear ring (2) is provided with a strip-shaped hole (22) extending along the circumferential direction, the strip-shaped hole (22) is matched with the stud (31) for installation, and the gear ring (2) is connected with the front wall (3) in a relatively rotatable manner;

a plurality of gears (1), gear (1) has transmission hole (11), transmission hole (11) are used for with transmission shaft (42) is connected, gear (1) cooperation install in gear ring (2), when gear ring (2) rotate for leading wall (3), gear (1) can drive blade (4) deflect.

2. A swirler with adjustable throat area according to claim 1, characterised in that the shape of the transfer holes (11) is a polygon, which comprises a triangle, a rectangle, a square, a regular hexagon or a regular octagon.

3. A swirler with adjustable throat area according to claim 1, characterised in that the number of studs (31) is the same as the number of strip-shaped holes (22), the number being 2-6.

4. A swirler with adjustable throat area according to claim 3, characterised in that the length of the strip-shaped holes (22) is such that the deflectable angle of the vanes (4) is not more than 90 degrees.

5. The adjustable throat area swirler of claim 5, wherein: the gear ring (2) is provided with a plurality of uniformly distributed round holes (23), and the number of the round holes (23) is an integral multiple of 2.

6. A swirler with adjustable throat area according to claim 1, characterised in that the number of vanes (4) is 5-20.

7. A swirler with adjustable throat area according to claim 6, characterised in that the number of teeth of the ring gear (2) is an integer multiple of the number of vanes (4).

8. A swirler with adjustable throat area according to claim 1, characterised in that the turning axes (42) on both sides of the vane body (41) are coaxial and of the same diameter.

9. A swirler with adjustable throat area according to claim 1, characterised in that the turning axes (42) on both sides of the vane body (41) are coaxial and can be of different diameters.

10. The swirler with the adjustable throat area according to claim 1, characterized in that the number of teeth on the gear (1) is 10-30.

Technical Field

The application belongs to the technical field of aero-engine structural design, and particularly relates to a swirler with an adjustable throat area.

Background

The swirler is an important component in the combustion chamber of the aircraft engine, is arranged at the head part of the flame tube and is used for generating the rotation speed of the flowing air so as to form a backflow area in the flame tube and improve the combustion stability.

In general, the swirler is cast or machined, the vanes and the front and rear walls are integrated or welded, and the throat area is fixed and cannot be adjusted. However, in the initial stage of combustion chamber development, the cyclone with different throat areas generally needs to be subjected to model selection tests, and the traditional method is to process a plurality of cyclones to respectively perform tests, so that on one hand, the production cost is high, on the other hand, the production period is long, most importantly, the throat areas of the cyclones cannot be steplessly adjusted, and the tests have the risk that the optimal throat areas cannot be found, thereby bringing certain difficulties to the initial stage of combustion chamber development and tests. Therefore, in order to solve the above problems of the conventional cyclone test, a cyclone structure having a simple structure and a steplessly adjustable throat area is required, thereby saving expenses and time for smoothly finding an optimal throat area.

Disclosure of Invention

It is an object of the present application to provide a swirler with an adjustable throat area that solves or mitigates at least one of the problems of the background art.

The technical scheme of the application is as follows: a swirler with an adjustable throat area, the swirler being mounted to a combustor basket, comprising:

a front wall that is annular and has a plurality of first through holes and at least two studs extending along an axis thereof;

the rear wall is also annular, and a plurality of second through holes are formed in the rear wall;

the blades are arranged between the front wall and the rear wall, each blade is provided with a rotating shaft protruding out of two sides of the blade body, and the rotating shafts penetrate through the first through holes and the second through holes to be connected with the front wall and the rear wall in a relatively rotatable mode;

the gear ring is provided with a strip-shaped hole extending along the circumferential direction, the strip-shaped hole is matched with the stud, and the gear ring is connected with the front wall in a relatively rotatable manner;

the gear is provided with a transmission hole which is used for being connected with the transmission shaft, the gear is installed on the gear ring in a matched mode, and when the gear ring rotates relative to the front wall, the gear can drive the blades to deflect.

In an embodiment of the present application, the shape of the transmission hole is a polygon, and the polygon includes a triangle, a rectangle, a square, a regular hexagon, or a regular octagon.

In an embodiment of the application, the number of the studs is the same as that of the strip-shaped holes, and the number of the studs is 2-6.

In one embodiment of the present application, the length of the strip-shaped hole is such that the deflectable angle of the blade is not more than 90 degrees.

In one embodiment of the present application: the gear ring is provided with a plurality of uniformly distributed round holes, and the number of the round holes is an integral multiple of 2.

In an embodiment of the present application, the number of the blades is 5 to 20.

In an embodiment of the present application, the number of teeth of the gear ring is an integral multiple of the number of the blades.

In one embodiment of the present application, the rotational axes of the two sides of the blade body are coaxial and have the same diameter.

In one embodiment of the present application, the rotational axes on both sides of the blade body are coaxial and may have different diameters.

In one embodiment of the present application, the number of teeth on the gear is 10 to 30.

The utility model provides a throat area adjustable's swirler can realize carrying out electrodeless regulation to the blade angle under the circumstances of guaranteeing original swirler structure to the realization is to the electrodeless regulation of throat area and whirl number, and the screening test of the different whirl schemes in specially adapted combustion chamber development initial stage can greatly reduced development cost and cycle, has simple structure, reliable advantage concurrently simultaneously.

Drawings

In order to more clearly illustrate the technical solutions provided by the present application, the following briefly introduces the accompanying drawings. It is to be expressly understood that the drawings described below are only illustrative of some embodiments of the invention.

FIG. 1 is a cross-sectional view of a combustor basket equipped with swirlers.

FIG. 2 is an exploded view of a swirler with adjustable throat area according to the present application.

Fig. 3 is a schematic view of a blade structure according to the present application.

Fig. 4 is a schematic view of the structure of the rear wall of the present application.

FIG. 5 is an assembled front view of a swirler with adjustable throat area according to the present application.

FIG. 6 is an assembled rear view of a swirler with adjustable throat area according to the present application.

Detailed Description

In order to make the implementation objects, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be described in more detail below with reference to the drawings in the embodiments of the present application.

As shown in fig. 1, the swirler 10 with adjustable throat area of the present application is mounted on a combustor basket 20, and can generate a rotational speed to flow the incoming air from the outside into the combustor basket, so as to form a recirculation zone in the combustor basket, thereby improving the stability of flame combustion in the combustor basket.

As shown in fig. 2, the swirler 10 with adjustable throat area of the present application comprises a front wall 3, a rear wall 5, a plurality of vanes 4 arranged between the front wall and the rear wall, and a gear ring 2 and a plurality of gears 1.

The front wall 3 is annular and has a plurality of first through holes 31 and at least two studs 32 extending along its axis on the front wall 3.

The rear wall 5 is likewise annular, and a plurality of second through holes 54 are provided in the rear wall 5. In addition, the rear wall 5 is also outwardly projecting.

The vane 4 is the most important flow passage structure, and has a rotating shaft 42 protruding from both sides of the vane body 41, and the rotating shaft 42 passes through the first through hole 31 on the front wall 3 and the second through hole 54 on the rear wall 5 to realize the connection with the front wall 3 and the rear wall 5, and the connected vane can rotate freely to form an air flow passage.

Gear ring 2 is initiative structure, and its inner circle has the profile of tooth structure of round, has on the gear ring 2 along the bar hole 22 (or refer to runway hole) of circumference extension, and bar hole 22 cooperates with double-screw bolt 31 and can realize the direction function, and gear ring 2 links together with antetheca 3 relatively pivoted. In some embodiments, the strip-shaped hole 22 and the stud 31 on the front wall 3 lock and position the gear ring 2 by the locking nut 7, and when the locking nut 7 is not tightened, the gear ring 2 should be freely rotatable along the central axis of the cyclone.

Gear 1 is driven structure, its outer lane has the profile of tooth structure of round, gear 1 has transmission hole 11, transmission hole 11 is used for being connected and realizing circumference relatively fixed with transmission shaft 42, fixed mode can adopt modes such as welding, gear 1 cooperation is installed at gear ring 2 inboardly, both interlocks, blade 4 should keep at the same angle this moment, when gear ring 2 rotates for antetheca 3 (can manual control, also can adopt other mode controls), gear 1 and then drives and deflect simultaneously rather than a plurality of blades 4 of being connected.

In the present application, the shape of the transmission hole 11 on the gear 1 is a polygon, which includes a triangle, a rectangle, a square, a regular hexagon, or a regular octagon. In some embodiments, the number of sides of the polygon is 3 to 8. In the preferred embodiment, the drive holes 11 are of a regular hexagonal configuration.

In some embodiments of the present disclosure, the number of the studs 31 is the same as the number of the bar-shaped holes 22, and the number of the studs 31 and the number of the bar-shaped holes can be 2 to 6.

In one embodiment of the present application, the length of the strip-shaped hole is such that the deflectable angle of the blade is not more than 90 degrees.

In one embodiment of the present application: the gear ring is provided with a plurality of uniformly distributed round holes 23, and the number of the round holes is an integral multiple of 2. The circular hole 23 is a main wrenching structure, and when the gear ring 2 cannot be manually rotated, a special tool can be used to cooperate with the circular hole to rotate the gear ring 2.

In some embodiments of the present application, the number of blades 4 may be 5 to 20.

In one embodiment of the present application, the number of teeth of the gear ring 2 is an integral multiple of the number of the blades 4.

In one embodiment of the present application, the rotating shafts 42 on both sides of the vane body 41 are coaxial and have the same diameter.

In another embodiment of the present application, the rotational shafts 42 on both sides of the blade body 41 are coaxial and may have different diameters.

In the above embodiments, the structure of the rotating shaft 42 at the two sides of the blade body may still be different. For example, at the end connected to the front wall 3, the rotation shaft 42 includes a regular hexagonal transmission portion 421 having the same shape as the transmission hole 11 and a circular portion 422 having a first diameter and fitting with the first through hole, the transmission portion 421 and the circular portion 422 are formed in a stepped shape, at the end connected to the rear wall 5, the rotation shaft 42 includes a threaded portion 424 having a thread and fitting with the nut 6 and a circular portion 423 having a second diameter and fitting with the second through hole 54, and the threaded portion 424 and the circular portion 423 are also formed in a stepped shape.

In one embodiment of the present application, the number of teeth on the gear 1 is 10 to 30.

The utility model provides a throat area adjustable's swirler can realize carrying out electrodeless regulation to the blade angle under the circumstances of guaranteeing original swirler structure to the realization is to the electrodeless regulation of throat area and whirl number, and the screening test of the different whirl schemes in specially adapted combustion chamber development initial stage can greatly reduced development cost and cycle, has simple structure, reliable advantage concurrently simultaneously.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present application should be covered within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.