JPH0579232U - Movable vane structure in radial flow vanes of vortex generator - Google Patents

Abstract

(57) [Abstract] [Purpose] A plurality of movable vanes radially arranged around a fuel injection pipe are tilted and returned from the outside of a rotary housing by a rotary link including the fuel injection pipe. In an intake pipe (2) into which a fuel injection pipe (1) is inserted in an axial direction, a rotatable vortex generating means (3) is provided between the fuel injection pipe (1) and the intake pipe (2), The vortex generating means (3) has an inner hollow rotary housing (30), and a movable vane portion (32) radially arranged around the fuel injection pipe (1) on the discharge side inside the rotary housing (30), The movable blade (32) is rotated from the outside of the rotary housing (30) to move the movable blade (3).
The main feature is that each movable blade (320) in 2) is tilted and returned in a tilt angle range of at least 0 ° to 80 °.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a radial flow vane structure of a radial flow vortex generator, and more particularly, to providing a vortex flow of a combustion gas in a combustion chamber of a combustor with respect to an inside of an air supply pipe that inserts a fuel injection pipe in an axial direction. In order to do so, the present invention relates to a movable vane structure in a radial vane of a vortex generator rotatably installed therein.

[0002]

[Prior Art]

 Conventionally, in a radial flow type vortex generator that provides a vortex flow of a combustion gas (mostly air; hereinafter, air is representative of the combustion gas) to the combustion chamber of the combustor, it is disclosed in Japanese Utility Model Publication No. Sho 64-31335. As disclosed, there has been a system in which a cylindrical slider damper is provided in a ventilation path through which air flows to control the flow rate and swirling force of the air supplied to the combustion chamber. Further, there has been shown the prior art in which the tilt angle θ of the swirl blade 25 is variably controlled by the blade angle control ring structure (see reference numerals 25 to 30 in FIGS. 5 to 8) in which a large number of links are combined.

However, in Japanese Utility Model Laid-Open No. 64-31335, a device for controlling the flow rate and swirling force of the air supplied to the combustion chamber could be provided, but the vortex generating means is a stationary type that guides the air. Since the eddy current is formed by flowing along the flow path, the device becomes large in the outer peripheral direction centering on the combustion injection pipe 6 and cannot be applied to a small combustor.

[0004]

[Problems to be solved by the device]

 The problems to be solved by the present invention are that the conventional radial flow vortex generator cannot be applied to a small combustion chamber because the vortex generating means is too large, and that the blade angle of the prior art is small. The control ring structure is a structure in which a large number of links are combined in a ring shape, so the number of parts was large and assembly and maintenance were complicated.

[0005]

[Means for Solving the Problems]

 The present invention provides, in an intake pipe in which a fuel injection pipe is inserted in the axial direction, a vortex generating means which is rotatable between the fuel injection pipe and the intake pipe, and the vortex generating means is provided in a rotary housing having an internal hollow. Movable vanes radially arranged around the fuel injection pipe on the discharge side inside the rotary housing, and the movable vanes are rotatably moved from outside the rotary housing so that each movable vane of the movable vanes is at least 0 °. The main feature is tilting and returning within a tilt angle range of -80 °. The purpose of installing a vortex generating means that can change the blade angle of the radial flow vane with respect to the intake pipe that inserts the fuel injection pipe in the axial direction is to store the entire device inside the intake pipe with a minimum number of parts. It was realized as follows.

[0006]

【Example】

 Hereinafter, preferred embodiments according to the present invention will be described with reference to the drawings.

Referring to FIG. 1, the vortex generator of this embodiment includes a fuel injection pipe 1 for injecting fuel (not shown) in the direction of a black arrow A, and a fuel injection pipe 1 concentrically in the axial direction. The air supply pipe 2 which is inserted to supply air (not shown) in the white arrow directions B to F, and the air which is provided between the fuel injection pipe 1 and the air supply pipe 2 are swirled. The vortex generating means 3 for conversion and the rotational driving means 4 for rotating the vortex generating means 3 around the fuel injection pipe 1 are the main constituent elements, and the left side of FIG. The combustion chamber 5 shown is provided. The inner diameters of the combustion injection pipe 1 and the air supply pipe 2 are set based on the fuel flow rate and the air amount required for the combustion chamber.

The vortex generating means 3 includes a rotary housing 30 having a hollow interior, a movable blade portion 32 having a plurality of movable blades provided at the left end in FIG. 1 inside the rotary housing 30, and a movable blade portion 32 of the movable blade portion 32. A blade rotating portion 34 that is integrally provided from the movable blade portion 32 to the right end of the rotary housing 30 in the figure in order to change or restore the inclination angle all at once, and from the intake hole 300 inside the rotary housing 30 in the direction of the white arrow B. The porous air guide plate 36 is provided so as to flow the incoming air (white arrow C) in the direction of the white arrow D substantially parallel to the combustion injection pipe 1.

In the rotary housing 30, after adjusting the air (white arrow C) that has entered in the white arrow B direction from the intake hole 300 to flow in the white arrow D direction by the baffle plate 36, the movable blade portion 32. Through the discharge hole 301 opened along the outer peripheral surface of the fuel injection pipe 1 near the left end in FIG. 1 and provided to the combustion chamber 5 in the direction of the white arrow F as a swirl flow.

1 to 2, the movable vane portion 32 has a plurality of movable vanes 320, 320 ... Arranged radially around the discharge hole 301 opened along the outer peripheral surface of the fuel injection pipe 1. 1 and inside the rotary housing 30 is detachably fixed to the left side surface in FIG. 1, and a plurality of one ends (in FIGS. 1 and 2) near the discharge hole 301 of the blade lower side support plate 321. The left end) is fixed circumferentially, and the lower pins 322, 322 ... which rotatably support the movable blades 320, 320 ... A plurality of other ends (right ends in FIGS. 1 and 2) of the side pins 322, 322 ... Are fixed circumferentially to rotatably support the outer peripheral surface of the fuel injection pipe 1, and a lower blade Side support board 321 and rotation seat 32 3 are connected via the guide ring 324 so as to rotate integrally.

1 to 4, the movable blade part 34 includes a rotating plate 340 slidably supporting the upper ends of the movable blades 320, 320 ... And a rotating plate 340 of the rotating housing 30. In order to turn or return from the outside, it is easy to see in FIG. 1 that a hollow cylindrical turning link 341 is integrally provided from the turning plate 340 to the right outer end of the turning housing 30, and FIG. Although only shown in FIG. 3, the blade tilting means 342 for rotating or returning the rotating link 341 from the outside of the rotating housing 30 is provided. In order to rotatably support the upper ends of the movable blades 320, 320, ..., The turntable 340 protrudes from the right side surface of FIG. , 32a (see FIG. 1) for accommodating a plurality of inclined grooves 34a, 34a ... (20 in this embodiment), and when the rotary link 341 is rotated by the blade inclination means 342. , The rotary plate 340 integrally fixed to the rotary link 341 is rotated clockwise, for example, by a predetermined angle to move the movable blades 320, 320 ... At a specific angle (in this embodiment, 0 °). Tilt by ~ 80 °. At this time, a rotary pulley 34b is provided between the rotary seat 323 and the rotary plate 340 to slide the guide groove 32b recessed in the outer peripheral surface of the rotary seat 323, so that the rotary plate 340 rotates smoothly. Configured to move or return. The reference numeral 34c in FIGS. 2 to 4 is a fixing hole for the rotating pulley 34b.

The operation of the present invention will be described with reference to FIGS. 5 to 7. The inclination of the movable blade 320 of the movable blade portion 32 is determined by rotating the rotary plate 340 of the blade movable portion 34 by a predetermined angle. Although formed, the movable blade 320, which coincides with the half-diameter line L of the turntable 340 at the inclination angle θA = 0 ° in FIG. 5, moves the moveable plate 340 in the clockwise direction G in FIG. When the movable blade 320 is rotated by an angle (for example, 15 °), the sliding roller 32a provided on the rotating plate 340 near the upper end of the movable blade 320 slides inside the inclined groove 34a of the rotating plate 340 to move the movable blade 320. Is inclined with respect to the radial line L about the lower pin 322 supported by the guide ring 324 by an inclination angle θB (for example, 17 °). Similarly, in FIG. 7, when the rotary plate 340 is further rotated in the clockwise direction G by a predetermined angle (for example, 30 °), the movable blade 320 is inclined by an inclination angle θC (for example, 45 °) with respect to the radial line L. Incline. As can be seen from FIG. 3, in this embodiment, 20 movable blades 320 are provided at intervals of about 18 °, so the inclination angle θ is related to the thickness of the movable blades 320. Can be tilted in the range of 0 ° to 80 °.

FIG. 8 shows the relationship between the inclination angle (θ) of each movable blade and the vortex number (S). The inclination angle (θ) is about 36 ° and the vortex number (S) is about 0.4. With the increase of the inclination angle θ, the number S of vortices is S = about 0.5 at θ = about 45 °, S = about 0.65 at θ = about 56 °, S = about 66 ° at θ = about 66 °. When S was about 0.8, θ = about 75 °, S = about 1.1, and when θ = about 80 °, S = about 1.2. That is, as can be seen from FIG. 8, the relationship between the inclination angle (θ) and the vortex number (S) is in direct proportion along the straight line R. Therefore, if the number of vortices (S) required for the combustion chamber 5 is known, the tilt angle (θ) of the movable vanes in the vortex generator of the present invention can be easily calculated.

[0014]

[Effect of the device]

 The movable vane structure in the radial flow vane of the vortex generator according to the present invention is configured as described above, and rotates the vortex generating means including the fuel injection pipe inside the air supply pipe to generate the vortex flow necessary for the combustion chamber. The movable blade is formed by a blade rotating means of the blade inclined portion provided inside the rotating housing and a cylindrical rotating link into which the fuel injection pipe is inserted, and blade inclination means connected to the rotating link outside the rotating housing. Since each movable blade of the part can be tilted and returned to a predetermined angle, the vortex generator becomes very small, and the vortex flow of the vortex flow provided to the combustion chamber in a small combustor, that is, the swirl degree can be adjusted. There is practicality.

[Brief description of drawings]

FIG. 1 is a sectional view of an essential part showing a movable blade structure of a vortex generator.

FIG. 2 is an exploded perspective view of essential parts showing a movable blade portion and a blade inclined portion.

FIG. 3 is a front view showing a turntable of a blade inclination portion.

FIG. 4 is a sectional view taken along line IV-IV in FIG.

FIG. 5 is an explanatory diagram showing a tilt angle θA = 0 ° of the movable blade.

FIG. 6 is an explanatory diagram showing a tilt angle θB of a movable blade.

FIG. 7 is an explanatory diagram showing a tilt angle θC of a movable blade.

FIG. 8 is a graph showing the relationship between the tilt angle θ of the movable blade and the number of vortices.

[Explanation of symbols]

 1 Fuel Injection Pipe 2 Air Supply Pipe 3 Vortex Generating Means 4 Rotation Driving Means 5 Combustion Chamber A Black Arrow (Fuel) B White Arrow (Air) C White Arrow (Air) D White Arrow (Air) F White Arrow (Air) 30 Rotating housing 32 Movable blade portion 34 Blade rotating portion 36 Baffle plate 300 Intake hole 301 Discharge hole 320 Movable blade 321 Blade lower support plate 322 Lower pin 323 Rotating seat 324 Guide ring 325 Connecting pin 340 Rotating plate 341 times Moving link 342 Blade inclination means 32a Sliding roller 34a Inclined groove 34b Rotating pulley

Claims (4)

[Scope of utility model registration request] 1. A fuel injection pipe for injecting fuel into a combustion chamber of a combustor, an air supply pipe for penetrating the fuel injection pipe in an axial direction to supply combustion gas to the combustion chamber, and these combustion injection pipes. And a vortex generation means for rotatably provided between the air supply pipes to convert the supplied combustion gas into a vortex flow, and a rotational drive means for rotating the vortex generation means about the combustion injection pipe. In the vortex generator, the vortex generating means includes an inner hollow rotary housing rotated by the rotary drive means, and a plurality of movable vanes radially arranged around the combustion injection pipe at predetermined positions inside the rotary housing. The movable housing has a movable blade portion and a blade inclined portion that extends from the movable blade portion to the outer end of the rotary housing on the intake side to change and restore the inclination angle of each movable blade. The inlet for the combustion gas to enter, and the combustion gas that has passed through the vortex generating means is supplied to the combustion chamber through the discharge hole provided at the center of the discharge side. The lower end of each movable blade is rotatably supported by the lower support blade of the blade fixed to the blade and the rotary ring seat that rotates integrally with the lower support blade of the blade. A turning plate that slidably supports in the radial direction, a hollow cylindrical turning link that is provided from the turning plate to the outer end of the rotary housing on the intake side, and a turning link and a turning plate that turn from outside the rotary housing. A movable vane structure in a radial flow vane of a vortex generator, comprising vane tilting means for moving and tilting and returning each movable vane. 2. The movable vane structure in the radial flow vane of the vortex generator according to claim 1, wherein the rotary housing is provided with a porous air guide plate between the intake side and the turntable. 3. The radial flow vane of a vortex generator according to claim 1, wherein the movable vane portion inclines and restores the inclination angle of each movable vane within an angle range of at least 0 ° to 80 °. Movable blade structure. 4. The vortex generator according to claim 1, wherein the rotary disk is provided with at least one rotary pulley that meshes with a rotary groove formed in the outer peripheral surface of the rotary ring seat. Movable blade structure in radial flow blade.