Test piece structure for mounting split type two-stage swirler

Abstract

The invention discloses a test piece structure for mounting a split type two-stage swirler. The test piece structure comprises a test piece structure which can be replaced to form different two-stage swirlers. The test piece structure comprises a flame tube, and the flame tube is provided with a flame tube head mounting edge; the sleeve is mounted forwards from the rear end of the flame tube and is mounted at the mounting edge of the head of the flame tube through a mounting disc; the swirler front half part is provided with a swirler lug and is mounted backwards from the front end of the flame tube; the swirler front half part and the sleeve are combined to form a two-stage swirler. Different swirler front half parts and sleeves are replaced to form different two-stage swirlers, so that more two-stage swirler configurations can be presented for experiments, and the problem that more two-stage swirler configurations cannot be realized for experiments in the prior art is solved.

Description

Technical Field

[0001] The present invention relates to a test piece structure for the installation of a split-type double-stage swirler, belonging to the technical field of aero-engines. Background Art

[0002] The research and development of the combustion chamber of an aero-engine is mainly based on tests, and it goes through a process of testing, modification, re-testing, and re-modification. Among them, the structure of the double-stage swirler is particularly important for the combustion chamber. In the design stage of the combustion chamber scheme, in order to determine the optimal combustion chamber structure, different double-stage swirlers are generally designed to carry out comprehensive performance comparison tests of the full-ring combustion chamber.

[0003] For the existing double-stage swirler structure (see Chinese Patent Publication No. CN202902340U), the connection between the front swirler and the rear sleeve is inconvenient to replace, resulting in the inability to test more double-stage swirler configurations. Summary of the Invention

[0004] To solve the above technical problems, the present invention provides a test piece structure for the installation of a split-type double-stage swirler.

[0005] The present invention is achieved through the following technical solutions.

[0006] A test piece structure for the installation of a split-type double-stage swirler provided by the present invention includes:

[0007] A test piece structure that can be replaced to form different double-stage swirlers.

[0008] The test piece structure includes a flame tube, and the flame tube is provided with a flame tube head mounting edge;

[0009] It further includes a sleeve, which is installed forward from the rear end of the flame tube, and the sleeve is installed at the flame tube head mounting edge through a mounting plate;

[0010] It further includes the front half of a swirler provided with swirler lugs, and the front half of the swirler is installed backward from the front end of the flame tube; the front half of the swirler and the sleeve are collectively referred to as a double-stage swirler.

[0011] The flame tube head mounting edge is a tapered structure that is narrow at the front and wide at the rear.

[0012] The mounting plate includes three parts: the upper left part of the mounting plate, the upper right part of the mounting plate, and the lower part of the mounting plate, which are spliced and combined. There are mounting holes between both the upper left part of the mounting plate and the upper right part of the mounting plate and the lower part of the mounting plate, and the mounting holes are used to clamp the sleeve.

[0013] The front half of the swirler is fitted with the sleeve; the inner ring surface of the swirler lug of the front half of the swirler is symmetrically provided with inner convex parts, and the outer periphery of the sleeve is symmetrically provided with outer convex parts, so as to be clamped and fitted with the inner convex parts of the swirler lug with a small anti-rotation clearance; to prevent relative rotation between the front half of the swirler and the sleeve.

[0014] There are multiple flame tubes, and multiple double-stage swirlers are correspondingly assembled; there are multiple mounting discs, corresponding to the sleeves and the front halves of the swirlers installed in the flame tubes.

[0015] A pressing block is press-fitted on the swirler lug, the pressing block prevents the swirler lug from coming off and limits its position, a double interlocking piece is installed on the pressing block, and both ends of the pressing block and the double interlocking piece are fixed to the mounting edge of the head of the flame tube by screwing bolts.

[0016] The bolts penetrate through the upper left part, the upper right part and the lower part of the mounting disc, so that the mounting disc with the sleeve is fixed to the mounting edge of the head of the flame tube through the bolts.

[0017] The beneficial effect of the present invention is that different front halves of the swirler and sleeves are replaced to form different double-stage swirlers, so that more double-stage swirler configurations can be presented for experiments, solving the problem that the prior art cannot realize more double-stage swirler configurations for tests. Description of the Drawings

[0018] Figure 1 is a partial sectional installation schematic diagram of the present invention;

[0019] Figure 2 is a schematic diagram of the partial installation of the double-stage swirler lug limit of the present invention;

[0020] Figure 3 is a schematic diagram of the structure of the double-stage swirler of the present invention;

[0021] Figure 4 is a top view schematic diagram of the mounting disc of the present invention;

[0022] Figure 5 is a top view schematic diagram of the mounting edge of the head of the flame tube of the present invention;

[0023] In the figure: 1 - the front half of the swirler; 2 - the sleeve; 3 - the mounting disc; 4 - the mounting edge of the head of the flame tube; 5 - the flame tube; 6 - the pressing block; 7 - the double interlocking piece; 8 - the bolt; 9 - the swirler lug; 10 - the upper left part of the mounting disc; 11 - the upper right part of the mounting disc; 12 - the lower part of the mounting disc. Detailed Embodiments

[0024] The technical solution of the present invention will be further described below, but the scope of protection is not limited thereto.

[0025] As Figures 1 to 5 shown.

[0026] A test piece structure for the installation of a split-type double-stage swirler according to the present application includes:

[0027] A combustion chamber 5 provided with a combustion chamber head mounting edge 4; the combustion chamber head mounting edge 4 is a tapered structure that is narrow at the front and wide at the rear.

[0028] A sleeve 2, which is installed forward from the rear end of the combustion chamber 5. The sleeve 2 is installed at the combustion chamber head mounting edge 4 through a mounting plate 3; the mounting plate 3 is composed of three parts: a left upper part 10 of the mounting plate, a right upper part 11 of the mounting plate, and a lower part 12 of the mounting plate. There are mounting holes between both the left upper part 10 of the mounting plate and the right upper part 11 of the mounting plate and the lower part 12 of the mounting plate, and the mounting holes are used to hold the sleeve 2.

[0029] The front half 1 of the swirler provided with swirler lugs 9 is installed backward from the front end of the combustion chamber 5; the front half 1 of the swirler and the sleeve 2 are collectively called a double-stage swirler.

[0030] The front half 1 of the swirler cooperates with the sleeve 2; inner convex parts are symmetrically provided on the inner ring surface of the swirler lugs 9 of the front half 1 of the swirler, and outer convex parts are symmetrically provided on the outer periphery of the sleeve 2 to be clamped and fitted with the inner convex parts of the swirler lugs 9 with a small anti-rotation clearance; to prevent relative rotation between the front half 1 of the swirler and the sleeve 2.

[0031] A plurality of the combustion chambers 5 are provided, and a plurality of double-stage swirlers are correspondingly assembled; a plurality of the mounting plates 3 are provided to correspond to the sleeves 2 and the front half 1 of the swirler installed in the combustion chamber 5.

[0032] A pressing block 6 is pressed on the swirler lugs 9. The pressing block 6 prevents the swirler lugs 9 from coming off and being limited. A double interlocking piece 7 is installed on the pressing block 6. Both ends of the pressing block 6 and the double interlocking piece 7 are screwed and fixed to the combustion chamber head mounting edge 4 through bolts 8, so as to ensure the floating amount of the double-stage swirler. At this time, the bolts 8 penetrate through the left upper part 10 of the mounting plate, the right upper part 11 of the mounting plate, and the lower part 12 of the mounting plate of the mounting plate 3, so that the mounting plate 3 drives the sleeve 2 to be fixed to the combustion chamber head mounting edge 4 through the bolts 8, preventing the sleeve 2 from falling off.

[0033] Unscrew the bolt 8 from the mounting edge 4 of the combustor head, remove the upper left part 10, upper right part 11, and lower part 12 of the mounting disc 3 from the sleeve 2, pull the sleeve 2 out backward from the front end of the combustor 5, and pull the front half 1 of the swirler out forward from the rear end of the combustor 5 to achieve the removal of the double-stage swirler; then install the sleeve 2 from the rear end of the combustor 5 forward, install the front half 1 of the swirler from the front end of the combustor 5 backward, and screw the bolt 8 into the mounting edge 4 of the combustor head to achieve the installation of the double-stage swirler. Different combinations of the front half 1 of the swirler and the sleeve 2 in this application form different double-stage swirlers, enabling more double-stage swirler configurations to be presented for experiments, thus solving the problem in the prior art that more double-stage swirler configurations cannot be realized for testing.

Claims

1. A test piece structure for installing a split two-stage vortex finder, characterized in that: Including: A test piece structure that can achieve dressing changes to form different double-stage swirlers.

2. The test piece structure for installing a split two-stage vortex finder according to claim 1, characterized in that: The test piece structure includes a combustion chamber (5), and the combustion chamber (5) is provided with a combustion chamber head mounting flange (4); It further includes a sleeve (2), the sleeve (2) is installed forward from the rear end of the combustion chamber (5), and the sleeve (2) is installed at the combustion chamber head mounting flange (4) through a mounting plate (3); It further includes a front half part (1) of the swirler provided with swirler lugs (9), and the front half part (1) of the swirler is installed backward from the front end of the combustion chamber (5); the front half part (1) of the swirler and the sleeve (2) are combined to be called a double-stage swirler.

3. The test piece structure for installing a split double-stage vortex finder according to claim 2, characterized in that: The combustion chamber head mounting flange (4) is a tapered structure that is narrow in the front and wide in the rear.

4. The test piece structure for installing a split double-stage vortex finder according to claim 2, characterized in that: The mounting plate (3) is composed of three parts: a left upper part (10) of the mounting plate, a right upper part (11) of the mounting plate, and a lower part (12) of the mounting plate. There are mounting holes between the left upper part (10) of the mounting plate and the right upper part (11) of the mounting plate and the lower part (12) of the mounting plate, and the mounting holes are used to hold the sleeve (2).

5. The test piece structure for installing a split double-stage vortex finder according to claim 2, characterized in that: The front half part (1) of the swirler cooperates with the sleeve (2); inner convex parts are symmetrically arranged on the inner ring surface of the swirler lugs (9) of the front half part (1) of the swirler, and outer convex parts are symmetrically arranged on the outer periphery of the sleeve (2) to be in anti-rotation small-gap clamping fit with the inner convex parts of the swirler lugs (9); to prevent relative rotation between the front half part (1) of the swirler and the sleeve (2).

6. The test piece structure for installing a split double-stage vortex finder according to claim 2, characterized in that: There are multiple combustion chambers (5), and multiple double-stage swirlers are correspondingly assembled; there are multiple mounting plates (3) to correspond to the sleeves (2) and the front half parts (1) of the swirlers installed in the combustion chambers (5).

7. The test piece structure for installing a split double-stage vortex finder according to claim 2, characterized in that: A pressing block (6) is press-fitted on the swirler lugs (9), the pressing block (6) prevents the swirler lugs (9) from coming off and limits the position, a double interlocking piece (7) is installed on the pressing block (6), and both ends of the pressing block (6) and the double interlocking piece (7) are fixed to the combustion chamber head mounting flange (4) by screwing bolts (8).

8. The test piece structure for installing a split double-stage vortex finder according to claim 7, characterized in that: The bolts (8) penetrate through the left upper part (10) of the mounting plate, the right upper part (11) of the mounting plate, and the lower part (12) of the mounting plate of the mounting plate (3), so that the mounting plate (3) fixes the sleeve (2) to the combustion chamber head mounting flange (4) through the bolts (8).

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