Swirl finder mounting bracket, swirler floating structure and burner head

Abstract

The present invention discloses a swirler mounting bracket, a swirler floating structure and a burner head. The swirler mounting bracket includes an annular bracket body and mounting sleeves arranged circumferentially on the bracket body. The mounting sleeves are used to accommodate the support plates of the swirler. The mounting sleeves are sequentially provided with an inlet end and a blocking end along the rotation direction of the swirler. An elastic blocking member is provided at the inlet end. The elastic blocking member can elastically retract when the support plate extends in to open the inlet end, and rebound after the support plate extends into the mounting sleeve to close the inlet end. By adopting the above swirler mounting bracket, the disassembly and assembly difficulty of the swirler can be greatly reduced, and it has the advantages of simple installation and convenient maintenance.

Description

Technical Field

[0001] The present invention relates to the field of aeroengines, and particularly to a swirler mounting bracket, a swirler floating structure, and a burner head. Background Art

[0002] The swirler is installed at the head position of the combustion chamber flame tube, and its function is to generate a low-speed recirculation zone at the head position of the flame tube for the high-temperature gas. The fuel nozzle atomizes the fuel, and the atomized fuel is fully mixed with the air passing through the swirler to form an oil-gas mixture, ensuring stable and high-efficiency combustion.

[0003] Due to the imperfect mixing, atomization, and combustion organization of fuel and air in the combustion chamber, unoxidized carbon is often generated. The carbon deposits on the components with relatively low temperatures to form carbon deposits. The carbon deposits on the swirler will change the gas flow characteristics, reducing the performance and service life of the engine. Cracks and other defects may occur during the operation of the swirler, so the swirler needs to be cleaned, repaired, or replaced during the engine maintenance process. As the engine structure becomes increasingly complex, the maintenance problem needs to be considered in the design to improve the engine attendance rate, reduce the total life cycle cost, etc.

[0004] The existing swirler assembly structure is complex, the processing difficulty of the swirler is large, and it is necessary to fix the swirler at the head position by welding or bolting the pressing plate. During the maintenance process, cumbersome operations such as grinding the weld seam and disassembling the pressing plate are required to remove the swirler, and after maintenance, re-welding and assembly are needed, and the maintenance process is complex. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome the defects of complex assembly and difficult disassembly of the swirler in the prior art, and provide a swirler mounting bracket, a swirler floating structure, and a burner head.

[0006] The present invention solves the above technical problems through the following technical solutions:

[0007] A swirler mounting bracket includes an annular bracket body and mounting sleeves arranged circumferentially on the bracket body. The mounting sleeves are used to accommodate the support plates of the swirler. The mounting sleeves are sequentially provided with an inlet end and a blocking end along the rotation direction of the swirler. An elastic blocking member is provided at the inlet end. The elastic blocking member can elastically retract when the support plate extends in to open the inlet end, and rebound to close the inlet end after the support plate extends into the mounting sleeve.

[0008] Adopting the above swirler mounting bracket can greatly reduce the disassembly and assembly difficulty of the swirler, and has the advantages of simple installation and convenient maintenance.

[0009] More preferably, the radial inner side of the mounting sleeve has a slot communicating with the interior of the mounting sleeve. The support plate of the vortex finder can extend into the slot and rotate along the slot to the blocking end.

[0010] More preferably, the plurality of mounting sleeves are evenly spaced apart along the circumferential direction of the bracket body.

[0011] More preferably, the elastic blocking member is a spring sheet with a C-shaped cross section, and the spring sheet is fixed on the axial inner surface of the mounting sleeve.

[0012] More preferably, the elastic blocking member is a helical spring, and the spring is fixed on the axial inner surface of the mounting sleeve.

[0013] More preferably, a baffle is provided at the blocking end of the mounting sleeve, and the support plate moved to the blocking end can abut against the baffle to achieve the rotation-stopping limit of the vortex finder.

[0014] A vortex finder floating structure comprises a vortex finder and the above-mentioned vortex finder mounting bracket, wherein the support plate of the vortex finder extends into the mounting sleeve of the vortex finder mounting bracket, and there are spacer surfaces facing each other in the radial direction between the vortex finder mounting bracket and the vortex finder, so that the vortex finder can float in the vortex finder mounting bracket.

[0015] Such a structure can prevent the vortex finder from being damaged due to thermal stress and will not hinder the rotation of the vortex finder, thereby ensuring the normal operation of the vortex finder.

[0016] More preferably, the inner circumferential surface of the mounting sleeve and the outer circumferential surface of the support plate together constitute the spacing surface; and / or the inner circumferential surface of the support body and the outer circumferential surface of the vortex finder together constitute the spacing surface.

[0017] More preferably, the gap between the inner circumferential surface of the mounting sleeve and the outer circumferential surface of the support plate is greater than or equal to the gap between the inner circumferential surface of the bracket body and the outer circumferential surface of the vortex finder. Such a structure can avoid the support plate and the mounting sleeve from colliding with each other, thereby preventing the relatively fragile support plate from being damaged, which is beneficial to improving the life of the vortex finder.

[0018] A burner head comprises the above-mentioned swirler floating structure and a nozzle arranged in the middle of the swirler.

[0019] The positive and progressive effects of the present invention are:

[0020] 1. The vortex flow collector is easy to disassemble and assemble, easy to maintain and has a long service life;

[0021] 2. The vortex finder can rotate under the action of airflow and closely abut against the baffle on the mounting sleeve to achieve rotation stop and limit, and will not fall off the bracket;

[0022] 3. The floating structure can avoid thermal stress between the nozzle and the vortex finder and increase the life of the vortex finder. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A perspective view of the mounting bracket for the vortex finder;

[0024] Figure 2 A three-dimensional diagram of the vortex finder floating mechanism;

[0025] Figure 3 for Figure 2 AA surface section view;

[0026] Figure 4 is a three-dimensional diagram of a vortex finder;

[0027] Figure 5 is a side view of an elastic blocking member;

[0028] Figure 6 is a side view of another elastic blocking member;

[0029] Figure 7 is a side view of yet another elastic blocking member;

[0030] Figure 8 is a three-dimensional diagram of yet another elastic blocking member;

[0031] Description of reference numerals:

[0032] Vortex finder mounting bracket 100

[0033] Bracket body 110

[0034] Installation sleeve 120

[0035] Elastic blocking member 121

[0036] Baffle 122

[0037] Slot 123

[0038] Vortex 200

[0039] Support plate 210

[0040] Head support 300

[0041] Spacing surface 400

[0042] Nozzle 500 DETAILED DESCRIPTION

[0043] The present invention is further described below by way of examples, but the present invention is not limited to the scope of the examples.

[0044] like Figure 1As shown, a vortex finder mounting bracket 100 includes an annular bracket body 110 and a mounting sleeve 120 arranged on the bracket body 110 along the circumferential direction. The mounting sleeve 120 is used to accommodate a support plate 210 of a vortex finder 200. The mounting sleeve 120 is provided with an inlet end and a blocking end in sequence along the rotation direction of the vortex finder 200. An elastic blocking member 121 is provided at the inlet end. The elastic blocking member 121 can elastically retract when the support plate 210 is extended to open the inlet end, and rebound after the support plate 210 is extended into the mounting sleeve 120 to close the inlet end. A baffle 122 is provided at the blocking end of the vortex finder 200 for abutting against the vortex finder 200.

[0045] During installation, the support plate 210 of the vortex finder 200 is screwed into the installation sleeve 120 from the inlet end of the installation sleeve 120. The elastic blocking member 121 provided at the inlet end elastically retracts under the pressure of the support plate 210 so that the inlet end is always kept open, so that the support plate 210 can be installed into the installation sleeve 120 from the opened inlet end. After the support plate 210 is fully extended into the installation sleeve 120, the support plate 210 is separated from the elastic blocking member 121. At this time, the elastic blocking member 121 that is not squeezed can rebound to close the inlet end, thereby limiting the support plate 210 in the installation sleeve 120.

[0046] When in working state, the vortex finder 200 rotates under the action of airflow and closely overlaps with the baffle 122 on the mounting sleeve 120, thereby achieving anti-rotation and position limiting of the vortex finder 200, thereby effectively preventing the vortex finder 200 from falling off from the vortex finder mounting bracket 100.

[0047] During disassembly, the support plate 210 is unscrewed from the inlet end of the mounting sleeve 120 to realize disassembly of the vortex finder 200 .

[0048] In summary, the use of the above-mentioned vortex finder mounting bracket 100 can greatly reduce the difficulty of disassembling and assembling the vortex finder 200, and has the advantages of simple installation and convenient maintenance, and also has the advantage of not being easy to fall off.

[0049] In this embodiment, a plurality of mounting sleeves 120 are fixed to the outer wall of the bracket body 110 at uniform intervals along the circumferential direction by welding. Of course, the mounting sleeves 120 and the bracket body 110 can also be integrally formed by stamping, milling, casting, 3D printing, etc.

[0050] The number of the mounting sleeves 120 is at least two, and different numbers of mounting sleeves 120 can be used according to the size or strength requirements of the vortex finder 200. In this embodiment, the number of mounting sleeves 120 can be 2-6. However, it should be noted that the circumferential spacing between two adjacent mounting sleeves 120 should not be less than the width of the support plate 210 to avoid hindering the installation of the support plate 210.

[0051] The mounting sleeve 120 has a C-shaped cross section and has a slot 123 on the radial inner side thereof that communicates with the interior of the mounting sleeve 120 . The support plate 210 of the vortex finder 200 can extend into the slot 123 and rotate along the slot 123 to a position against the baffle 122 .

[0052] Combination Figure 1 and Figure 5 The elastic blocking member 121 is a spring sheet with a C-shaped cross section, which is fixed to the axial inner surface of the mounting sleeve 120 by welding or bolting. Preferably, the spring sheet is fixed by a welding method with few parts and strong strength.

[0053] The two side end surfaces of the spring sheet face the opening end and the inner cavity of the mounting sleeve 120 respectively. In this way, when the support plate 210 placed in the mounting sleeve 120 slides to the opening end, it will be stopped by the side end surface of the spring sheet and will not easily cause the spring to be squeezed and deformed and slide out of the inner cavity. The risk of the vortex finder 200 falling off from the mounting sleeve 120 is effectively reduced.

[0054] Of course, combined Figures 6 to 8 The elastic blocking member 121 is not limited to a C-shaped spring sheet, but may also be an M-shaped spring sheet, a "7"-shaped spring sheet or a spiral spring, all of which fall within the protection scope of the present invention.

[0055] like Figure 2 and Figure 3 As shown, the present invention also provides a vortex finder floating structure, comprising the above-mentioned vortex finder mounting bracket 100, a vortex finder 200 and an annular head support 300 connected to the vortex finder mounting bracket 100. Figure 4 As shown, the vortex finder 200 has support plates 210 whose number matches the mounting sleeve 120 on the vortex finder mounting bracket 100. The support plates 210 of the vortex finder 200 extend into the mounting sleeve 120 of the vortex finder mounting bracket 100. There are spacing surfaces 400 spaced apart from each other in the radial direction between the vortex finder mounting bracket 100 and the vortex finder 200, so that the vortex finder 200 can float in the vortex finder mounting bracket 100.

[0056] By adopting such a structure, it is possible to avoid the vortex finder 200 from being unable to freely expand and contract due to external constraints when being heated, thereby preventing the vortex finder 200 from being damaged due to the thermal stress, thereby improving the life of the vortex finder 200. In addition, by adopting such a structure, when not in operation, the vortex finder 200 can float in the mounting sleeve 120, and when in operation, the vortex finder 200 can rotate against the baffle 122 without hindrance, thereby ensuring the normal operation of the vortex finder 200.

[0057] The inner circumferential surface of the mounting sleeve 120 and the outer circumferential surface of the support plate 210 together form the spacer surface 400; the inner circumferential surface of the bracket body 110 and the outer circumferential surface of the end of the swirler 200 together form the spacer surface 400. Preferably, the gap between the inner circumferential surface of the mounting sleeve 120 and the outer circumferential surface of the support plate 210 is greater than or equal to the gap between the inner circumferential surface of the bracket body 110 and the outer circumferential surface of the end of the swirler 200. The reason for adopting such a structure is that it can avoid the damage of the relatively fragile support plate 210 caused by the mutual collision between the support plate 210 and the mounting sleeve 120, which is beneficial to improving the service life of the swirler 200.

[0058] Preferably, wear-resistant coatings are sprayed on the inner circumferential surfaces of the swirler 200, the support plate 210, and the mounting sleeve 120, the outer circumferential surface of the end of the swirler 200, and the mating surface of the head support 300 and the swirler 200 to reduce the wear of the swirler 200 during the switching process between the working and non-working states and improve the overall service life.

[0059] Preferably, there is a heat insulation component between the head support 300 and the swirler mounting bracket 100, and the heat insulation component can be a heat insulation pad or a heat insulation layer, etc., to reduce the thermal shock damage of the head support 300.

[0060] The present invention also provides a burner head, including the above-mentioned swirler floating structure and a nozzle 500 disposed in the middle of the swirler 200.

[0061] Although the specific embodiments of the present invention have been described above, those skilled in the art should understand that this is only an example, and the protection scope of the present invention is defined by the appended claims. Without departing from the principles and essence of the present invention, those skilled in the art can make various changes or modifications to these embodiments, but these changes and modifications all fall within the protection scope of the present invention.

Claims

1. A swirl generator mounting bracket, characterized in that: The invention comprises an annular support body and a mounting sleeve arranged on the support body along the circumferential direction, wherein the mounting sleeve is used to accommodate the support plate of the vortex finder, and the mounting sleeve is provided with an inlet end and a blocking end in sequence along the rotation direction of the vortex finder, and an elastic blocking member is provided at the inlet end, and the elastic blocking member can elastically retract when the support plate is extended to open the inlet end, and rebound after the support plate is extended into the mounting sleeve to close the inlet end.

2. The swirl generator mounting bracket according to claim 1, characterized in that: The radial inner side of the mounting sleeve is provided with a slot communicating with the interior of the mounting sleeve, and the support plate can extend into the slot.

3. The swirl generator mounting bracket according to claim 1, wherein: The plurality of mounting sleeves are evenly spaced apart along the circumferential direction of the bracket body.

4. The swirl generator mounting bracket according to claim 1, wherein: The elastic blocking member is a spring sheet with a C-shaped cross section, and the spring sheet is fixed on the axial inner surface of the mounting sleeve.

5. The swirl generator mounting bracket according to claim 1, wherein: A baffle is provided at the blocking end of the mounting sleeve.

6. A swirl generator floating structure, characterized in that: It comprises a vortex finder and a vortex finder mounting bracket as claimed in any one of claims 1 to 5, wherein a support plate of the vortex finder extends into a mounting sleeve of the vortex finder mounting bracket, and there are spacer surfaces opposing each other in a radial direction between the vortex finder mounting bracket and the vortex finder so that the vortex finder can float in the vortex finder mounting bracket.

7. The vortex finder floating structure according to claim 6, characterized in that: The inner peripheral surface of the mounting sleeve and the outer peripheral surface of the support plate together constitute the spacing surface; And / or, the inner peripheral surface of the support body and the outer peripheral surface of the vortex finder together constitute the spacing surface.

8. The vortex finder floating structure according to claim 7, characterized in that: The gap between the inner circumferential surface of the mounting sleeve and the outer circumferential surface of the support plate is greater than or equal to the gap between the inner circumferential surface of the support body and the outer circumferential surface of the vortex finder.

9. The vortex finder floating structure according to claim 6, characterized in that: The vortex finder floating structure also includes an annular head support connected to the bracket body.

10. A burner head, characterized in that: The invention comprises a vortex finder floating structure as claimed in any one of claims 6 to 9 and a nozzle arranged in the middle of the vortex finder.

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