CN110849628A - Combustion chamber of adjustable flame tube of turbocharger test bed - Google Patents

Abstract

The invention provides a combustion chamber of an adjustable flame tube of a turbocharger test bed, which comprises an inner flame tube, a cylinder and a rear flange, wherein the tail part of the flame tube is fixedly arranged on a middle flange, and a middle flange straight pipe section is sequentially arranged on the right side of the middle flange; the inner flame tube is of a circular tube structure, the left end of the inner flame tube is sleeved on the inner side of the straight tube section of the middle flange, and the right end of the inner flame tube is sleeved on the outer side of the straight tube section of the rear flange; the cylinder is arranged on the outer side of the straight pipe section of the rear flange, and a piston rod is arranged in the cylinder; the outer side protruding part of the inner flame tube is an inner flame tube flange, and the other end of the piston rod is connected with the inner flame tube flange. The invention has the movable inner flame tube, when the piston rod retracts, an outlet pipeline of the combustion chamber is formed, and fuel oil is atomized and combusted in the range of the flame tube with larger volume; when the piston rod extends out, a cavity with a smaller volume is formed, and fuel oil is atomized and combusted in the range of the inner flame tube.

Description

Combustion chamber of adjustable flame tube of turbocharger test bed

Technical Field

The invention belongs to the technical field of electromechanics, and particularly relates to a combustion chamber of an adjustable flame tube of a turbocharger test bed.

Background

In the development process of the turbocharger, tests such as a performance test of the gas compressor and a turbine flow characteristic need to be carried out. During the test, it was necessary to maintain the outlet temperature of the combustor and reduce the air flow under certain conditions. The conventional turbocharger test bench adopts a single-tube combustion chamber, and due to the influence factors such as oil-gas ratio and combustion efficiency, the combustion efficiency of the combustion chamber is low under the non-design working condition, and if the oil supply and air flow of the combustion chamber are simply reduced, the combustion state in the flame tube is the non-design working condition, and the combustion is unstable and easy to extinguish.

Disclosure of Invention

In view of this, the present invention is directed to a combustion chamber of an adjustable flame tube of a turbocharger test bed, so as to meet different usage conditions of the combustion chamber, and widen a flow rate adjustment range of the combustion chamber.

In order to achieve the purpose, the technical scheme of the invention is realized as follows:

a combustion chamber of an adjustable flame tube of a turbocharger test bed comprises a front flange, the flame tube and a middle flange, wherein the flame tube is arranged between the front flange and the middle flange; the flame tube is characterized by also comprising an inner flame tube, a cylinder and a rear flange, wherein the tail part of the flame tube is fixedly arranged on the middle flange, and a middle flange straight pipe section is sequentially arranged on the right side of the middle flange; the inner flame tube is of a circular tube structure, the left end of the inner flame tube is sleeved on the inner side of the straight tube section of the middle flange, and the right end of the inner flame tube is sleeved on the outer side of the straight tube section of the rear flange; the cylinder is arranged on the outer side of the straight pipe section of the rear flange, and a piston rod is arranged in the cylinder; the outer side protruding part of the inner flame tube is an inner flame tube flange, and the other end of the piston rod is connected with the inner flame tube flange; the inner flame tube can slide left and right in the straight pipe section of the middle flange under the pushing of the piston rod.

Furthermore, an ear seat is arranged on the inner flame tube flange, the piston rod is connected with the piston rod connector, and the piston rod connector is connected with the ear seat together through a pin.

Furthermore, the right side of the straight pipe section of the middle flange is provided with a raised middle flange baffle table, and when the inner flame tube slides to the leftmost position, the flange of the inner flame tube is in contact with the middle flange baffle table.

Further, when the piston rod retracts, the left end of the inner flame tube retracts into the straight pipe section of the middle flange to form an outlet pipeline of the combustion chamber;

when the piston rod extends out, the inner flame tube flange pushes the inner flame tube to move leftwards, the inner flame tube flange is contacted with the middle flange baffle table, and the left end of the inner flame tube extends into the flame tube to form a combustion space with a small volume.

Furthermore, a plurality of inner flame tube holes are formed in the part, located on the straight pipe section of the middle flange, of the inner flame tube.

Compared with the prior art, the invention has the following advantages:

(1) the invention has the movable inner flame tube, when the piston rod retracts, the left end of the inner flame tube retracts into the straight tube section of the middle flange to form an outlet pipeline of the combustion chamber, and fuel oil is atomized and combusted in the range of the flame tube with larger volume; when the piston rod extends out, the left end of the inner flame tube extends into the flame tube to form a cavity with a small volume, and fuel oil is atomized and combusted in the range of the inner flame tube. The structure meets the requirement that the combustion chamber adapts to different use working conditions, and widens the flow regulation range of the combustion chamber.

(2) The invention has simple structure and easy realization.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic sectional view of a combustion chamber of an adjustable flame tube of a turbocharger test stand according to an embodiment of the invention;

FIG. 2 is a cross-sectional view of an inner liner according to an embodiment of the present invention.

Description of reference numerals:

1-front flange, 2-bolt, 3-nozzle, 4-pull rod, 5-swirler, 6-ignition rod, 7-casing, 8-flame tube, 9-middle flange, 10-middle flange straight tube section, 11-inner flame tube hole, 12-middle flange baffle table, 13-inner flame tube, 14-inner flame tube flange, 15-lug seat, 16-pin, 17-piston rod connector, 18-piston rod, 19-cylinder and 20-rear flange.

Detailed Description

It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

FIG. 1 is a combustion chamber of an adjustable flame tube of a turbocharger test bed, which comprises a front flange 1, a nozzle 3, a swirler 5, an ignition rod 6, acasing 7, aflame tube 8, a middle flange 9, aninner flame tube 13, acylinder 19 and arear flange 20;

thecasing tube 7 is sleeved outside theflame tube 8, one end of the casing tube is connected with the middle flange 9, and the other end of the casing tube is in contact with the front flange 1; thecasing 7 is fixedly connected with the joint supporting end of the nozzle 3, the ignition rod 6 and the swirler 5, and the nozzle 3, the ignition rod 6 and the swirler 5 extend to the head part inside theflame tube 8; the front flange 1 and the middle flange 9 are tightly pressed by a pull rod 4 and a bolt 2;

the tail part of theflame tube 8 is fixedly arranged on the middle flange 9, a middle flangestraight tube section 10 and a middle flange baffle table 12 are sequentially arranged on the right side of the middle flange 9, and theinner flame tube 13 is sleeved inside the middle flangestraight tube section 10;

FIG. 2 is a cross-sectional view of aninner flame tube 13, wherein theinner flame tube 13 is a circular tube structure, the left end of the inner flame tube is provided with a plurality of innerflame tube holes 11, and the outer convex part is an innerflame tube flange 14;

theinner flame tube 13 is positioned at the right part of the innerflame tube flange 14, is sleeved inside the straight pipe section of therear flange 20 and can slide left and right;

thecylinder 19 is installed on the outer side of the straight pipe section of therear flange 20, apiston rod 18 is arranged inside thecylinder 19, and the other end of thepiston rod 18 is connected with the innerflame tube flange 14.

Theinner liner 13 can slide left and right in the middle flangestraight pipe section 10, and when theinner liner 13 slides to the leftmost position, the inner liner flange 14 contacts with themiddle flange baffle 12.

In the preferred embodiment, theinner liner flange 14 is provided with anear seat 15; thepiston rod 18 is connected with apiston rod connector 17, and thepiston rod connector 17 is connected with thelug seat 15 through apin 16.

The working process is as follows:

during testing, the positions of the front flange 1 and therear flange 20 are unchanged after the front flange and the rear flange are installed and fixed;

when thepiston rod 18 extends out, the innerflame tube flange 14 pushes theinner flame tube 13 to move leftwards, the innerflame tube flange 14 is in contact with the middle flange baffle table 12, and the left end of theinner flame tube 13 extends into theflame tube 8 to form a combustion space with a smaller volume;

when thepiston rod 18 retracts, the left end of theinner flame tube 13 retracts into the straight middleflange pipe section 10 to form a combustion chamber outlet pipeline.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims (5)

1. The combustion chamber of the adjustable flame tube of the turbocharger test bed comprises a front flange (1), a flame tube (8) and a middle flange (9), wherein the flame tube (8) is arranged between the front flange (1) and the middle flange (9); the method is characterized in that:

the flame tube type flame tube;

the inner flame tube (13) is of a circular tube structure, the left end of the inner flame tube is sleeved on the inner side of the straight tube section (10) of the middle flange, and the right end of the inner flame tube is sleeved on the outer side of the straight tube section of the rear flange (20); the cylinder (19) is installed on the outer side of the straight pipe section of the rear flange (20), and a piston rod (18) is arranged in the cylinder (19); the outer side convex part of the inner flame tube (13) is an inner flame tube flange (14), and the other end of the piston rod (18) is connected with the inner flame tube flange (14); the inner flame tube (13) can slide left and right in the middle flange straight pipe section (10) under the pushing of the piston rod (18).

2. The combustion chamber of the adjustable flame tube of the turbocharger test stand according to claim 1, wherein: there is ear seat (15) on interior flame tube flange (14), piston rod (18) connection piston rod connector (17), will through pin (16) piston rod connector (17) with ear seat (15) link together.

3. The combustion chamber of the adjustable flame tube of the turbocharger test stand according to claim 1, wherein: the right side of the middle flange straight pipe section (10) is provided with a raised middle flange baffle table (12), and when the inner flame tube (13) slides to the leftmost position, the inner flame tube flange (14) is in contact with the middle flange baffle table (12).

4. The combustion chamber of the adjustable flame tube of the turbocharger test stand according to claim 3, wherein: when the piston rod (18) retracts, the left end of the inner flame tube (13) retracts into the straight pipe section (10) of the middle flange to form an outlet pipeline of a combustion chamber;

when the piston rod (18) extends out, the inner flame tube flange (14) pushes the inner flame tube (13) to move leftwards, the inner flame tube flange (14) is in contact with the middle flange baffle table (12), and the left end of the inner flame tube (13) extends into the flame tube (8) to form a combustion space with a small volume.

5. The combustion chamber of the adjustable flame tube of the turbocharger test stand according to claim 3, wherein: the part of the inner flame tube (13) positioned on the straight pipe section (10) of the middle flange is provided with a plurality of inner flame tube holes (11).

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