Gas turbine flame tube with adjustable cross flame tube

Abstract

The invention provides a gas turbine flame tube with an adjustable cross flame tube, which is characterized in that a square hole is formed in the original cross flame tube position of the flame tube, and groove-shaped structures are welded on three edges of the square hole to form a U-shaped clamping groove; an inserting piece with a cross flame tube structure is inserted into the U-shaped clamping groove, and the two flame tubes are connected through the cross flame tube. The cross flame tube of the flame tube is designed to be of a detachable structure, in the research and development and design stage of the flame tube, the performance of different cross flame tubes can be conveniently tested, the machining number of flame tube test pieces is reduced, the research and development efficiency is improved, the experiment cost is reduced, and resources are saved.

Description

Technical Field

[0001] The invention belongs to the field of thermal energy and power engineering, and in particular relates to a gas turbine flame tube with an adjustable cross-flame tube. Background Art

[0002] As society's demand for energy continues to increase and energy allocation continues to be optimized, gas turbines with rapid start and stop are increasingly widely used in distributed energy units and peak-shaving energy units. Successful ignition of the combustion chamber is one of the key factors in gas turbine startup. In common annular tube combustion chambers, multiple flame tubes are usually equipped with only one igniter, and most flame tubes need to rely on the cross-flame tubes between the flame tubes to transfer the flame to complete the ignition of all flame tubes. The flame tube cross-flame success rate and the total cross-flame duration are important indicators of gas turbine startup performance and are key factors in determining the startup control parameters of the gas turbine. In order to accurately test the cross-flame performance of the flame tube, optimize the cross-flame tube structure, and improve the cross-flame performance, it is necessary to conduct cross-flame tests on flame tubes with different cross-flame tube structures. However, since the cross-flame process involves multiple flame tubes, testing the performance of multiple cross-flame tubes requires processing a large number of flame tube test pieces, which has a long processing cycle and high processing cost; or cutting and welding different cross-flame tube structures on the same set of flame tubes to reduce the number of flame tube processing, but the replacement welding is relatively complicated, and there is a risk of deformation or even damage to the flame tube foundation structure during the welding process, which affects the accuracy of the test results. For a long time, the cost of flame liner cross-flame testing has limited the research on the flame liner cross-flame process and the design and optimization of the flame liner cross-flame tube structure, affecting the improvement of gas turbine starting performance. Summary of the invention

[0003] The object of the present invention is to provide a gas turbine flame tube with modular cross-fire tubes, which can facilitate repeated replacement of different cross-fire tubes to adjust the cross-fire performance of the flame tube without the need for welding and cutting operations during the flame tube research and development and design stage.

[0004] The present invention modularizes the cross-flame tube part of the flame tube into a detachable independent structure. During the research and development and design stage of the flame tube, there is no need for welding, cutting and other operations. The cross-flame tubes with different structural parameters can be easily replaced repeatedly to adjust the cross-flame performance of the flame tube, reduce the number of flame tube test pieces to be processed, adapt to the high-efficiency parametric optimization design process, reduce experimental costs, save resources, and have important application value.

[0005] A gas turbine flame tube with an adjustable cross-fire tube, wherein a square hole is opened at the original cross-fire tube position of the flame tube, and groove structures are welded on the three edges of the square hole to form a U-shaped slot; an insert with a cross-fire tube structure is inserted into the U-shaped slot, and two flame tubes are connected through a male head and a female head on the cross-fire tube.

[0006] Furthermore, the inserting piece completely covers the U-shaped slot, and the inserting piece can slide in the U-shaped slot.

[0007] Furthermore, the two edges of the U-shaped slot are parallel, and the insert can be inserted and installed in the slot in both positive and negative directions to form two flame tubes with different structures.

[0008] Furthermore, the opening direction of the U-shaped slot is not unique, and the opening direction can be changed to meet different situations.

[0009] Furthermore, the U-shaped slot is a slot with double parallel openings.

[0010] The beneficial effects of the present invention are as follows: when applying the flame tube of the present invention in the research and development design stage, through modular design of inserts and mounting structures with different cross-flame tube structures, the flame tube can be conveniently replaced with a variety of cross-flame tube structures without welding and cutting, avoiding the processing of a large number of flame tubes, and also avoiding the damage and deformation of the test flame tube basic structure due to welding, greatly reducing the cost of processing and adjusting the flame tube test piece, and improving the efficiency of research and development testing. When adjacent flame tubes are separated, the cross-flame tubes can be directly plugged in and replaced; when adjacent flame tubes are connected by a cross-flame tube, the position of the cross-flame tube relative to the flame tube is completely fixed; changing the insertion direction of the cross-flame tube insert can combine flame tube test pieces with different cross-flame tube positions. Make the cross-flame test safer, more reliable, more convenient and more efficient, while reducing the processing cost, realizing the parameterized test of the cross-flame tube structure in the research and development design stage, and accelerating the optimization design of the cross-flame performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the structure of two adjacent flame tubes with inserts according to the present invention;

[0012] Figure 2 It is a schematic diagram of explosion installation of two adjacent flame tubes with inserts according to the present invention;

[0013] Figure 3 It is a schematic diagram of the connection structure of two adjacent cross-fire tubes of the present invention;

[0014] Figure 4 It is a schematic diagram of the derived structure of the present invention. DETAILED DESCRIPTION

[0015] The present invention is further described below in conjunction with the accompanying drawings.

[0016] like Figure 1 As shown, a square hole 1-1 is opened at the original flame tube position of the flame tube A1, and groove structures are welded on the three edges of the square hole 1-1 to form a U-shaped slot 1-2. The plug A3 with the flame tube structure is inserted into the flame tube A1 through the opening of the U-shaped slot 1-2. The plug A3 can completely cover the square hole 1-1. When the plug A3 is plugged into a separate flame tube A1, the position of the plug A3 is not fixed and can slide along the U-shaped slot 1-2.

[0017] like Figure 1 As shown, a square hole 2-1 is opened at the original flame tube position of the flame tube B2, and groove structures are welded on the three edges of the square hole 2-1 to form a U-shaped slot 2-2. The insert B4 with the flame tube structure is inserted through the opening of the U-shaped slot 2-2 to connect the flame tube B2, and the insert B4 can completely cover the square hole 2-2. When the insert B4 is plugged into a separate flame tube B2, the position of the insert B2 is not fixed and can slide along the U-shaped slot 2-2.

[0018] The flame tube A1 and flame tube B2 with plugs in adjacent positions are connected in the manner of ordinary flame tubes. The female end 3-2 of the cross-flame tube on the plug A3 and the male end 4-2 of the cross-flame tube on the plug B4 are connected by plugging. When the cross-flame tubes of a pair of plugs on the adjacent flame tubes A1 and B2 are plugged in, the positions of the plugs A3 and B4 are fixed relative to the flame tubes A1 and B2 and no longer slide, so the flame tube cross-flame test can be carried out.

[0019] When the cross-flame test is completed, the two adjacent flame tubes A1 and B2 are disassembled and separated, and are no longer connected through the cross-flame tube female connector 3-2 on the insert A3 and the cross-flame tube joint male connector 4-2 on the insert B4, the insert A3 is pulled out through the U-shaped slot 1-2 opening, and the insert B4 is pulled out through the U-shaped slot 2-2 opening, and then the insert with other cross-flame tube structure can be replaced to form a flame tube test piece with a new cross-flame tube structure; it can also be as follows Figure 4 (1) and Figure 4 (3) The direction of the insert is reversed to form a flame tube test piece with different cross-flame tube position structures, so that only one set of flame tubes for cross-flame tests needs to be processed, and the purpose of testing flame tubes with different cross-flame tube structures without destroying the basic structure of the flame tube is achieved.

[0020] In order to facilitate the processing of the flame tube U-shaped slot 1-2 on various flame tube cooling structures 1-3, refer to Figure 4 (2) and Figure 4 The method (4) changes the U-shaped slot structure. As long as each plug has the freedom to move during insertion, and the plugs of adjacent flame tubes have different directions of translational freedom on their respective flame tubes, when the plugs of the two flame tubes are connected, complete positioning can be achieved.

[0021] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A gas turbine flame tube with an adjustable cross-fire tube, characterized in that: A square hole is opened at the original cross-flame tube position of the flame tube, and groove structures are welded on the three edges of the square hole to form a U-shaped slot; an insert with a cross-flame tube structure is inserted into the U-shaped slot, and the two flame tubes are connected through the cross-flame tube.

2. The gas turbine flame tube with adjustable cross-fire tube according to claim 1, characterized in that: The inserting piece completely covers the U-shaped slot, and the inserting piece can slide in the U-shaped slot.

3. The gas turbine flame tube with adjustable cross-fire tube according to claim 1, characterized in that: The two edges of the U-shaped slot are parallel, and the insert can be inserted and installed in the slot in both positive and negative directions to form two flame tubes with different structures.

4. The gas turbine flame tube with adjustable cross-fire tube according to claim 1, characterized in that: The opening direction of the U-shaped slot is not unique, and the opening direction can be changed to meet the needs of different situations.

5. The gas turbine flame tube with adjustable cross-fire tube according to claim 1, characterized in that: The U-shaped slot is a slot with double parallel openings.

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