Heat dissipation structure of smoke generator of turbojet engine

Abstract

The utility model discloses a heat dissipation structure of a smoke generator of a turbojet engine, which belongs to the technical field of heat dissipation structures and comprises a heat dissipation component, the heat dissipation component comprises a first heat dissipation sleeve and a second heat dissipation sleeve, and the first heat dissipation sleeve and the second heat dissipation sleeve are butted and then wrapped outside a tail spray pipe. Positioning support lugs are arranged on the sides, close to each other, of the first heat dissipation sleeve and the second heat dissipation sleeve; and the liquid flow channel is formed in the first heat dissipation sleeve and the second heat dissipation sleeve, and after the first heat dissipation sleeve and the second heat dissipation sleeve are in sealed butt joint, the liquid flow channel forms a through type net-shaped heat dissipation flow channel. Through the arrangement of a butt-joint structure, the first heat dissipation sleeve and the second heat dissipation sleeve are wrapped on the outer wall of the tail spray pipe, internal liquid circulates through communication of internal heat dissipation flow channels of the first heat dissipation sleeve and the second heat dissipation sleeve, efficient heat dissipation treatment of the tail spray pipe is achieved, and therefore the service life of all parts of the smoke generator is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to a heat dissipation structure technical field, concretely is a kind of heat dissipation structure of the smoke generator of turbojet engine. BACKGROUND

[0002] The smoke generator of turbojet engine injects liquid smoke agent into gas stream after atomizing by tail nozzle or afterburner, uses engine exhaust temperature to make smoke agent evaporate instantaneously, then condenses in atmosphere to form stable smoke screen, when smoke agent is injected into the tail nozzle of turbojet engine, it needs to withstand the impact of high-temperature gas flow above 500 DEG C, and high-temperature environment can cause thermal fatigue of tail nozzle pipeline material, so it needs to be heat dissipated.

[0003] Traditional tail nozzle improves heat resistance by using high-temperature-resistant alloy or ceramic coating, and reduces thermal fatigue, but due to long-time jetting work, the tail nozzle pipeline can cause temperature rise to exceed the standard due to heat conduction accumulation, thereby causing the occurrence of unexpected situations such as its use aging, and reducing the service life of smoke generator.

[0004] Therefore, the utility model provides a kind of heat dissipation structure of the smoke generator of turbojet engine to solve the above problems. UTILITY MODEL CONTENT

[0005] (One) technical problem solved

[0006] The utility model provides a kind of heat dissipation structure of the smoke generator of turbojet engine, aims at solving the problem proposed in the background art.

[0007] (Two) technical scheme

[0008] To achieve the above purpose, the utility model provides the following technical scheme: a kind of heat dissipation structure of the smoke generator of turbojet engine, including heat dissipation assembly, the heat dissipation assembly includes first heat dissipation sleeve and second heat dissipation sleeve, the first heat dissipation sleeve and second heat dissipation sleeve are wrapped outside tail nozzle after butt joint, and the side of the first heat dissipation sleeve and second heat dissipation sleeve close to each other is provided with positioning lug;

[0009] Liquid flow channel, the liquid flow channel is opened in the inside of first heat dissipation sleeve and second heat dissipation sleeve, and after the sealed butt joint of first heat dissipation sleeve and second heat dissipation sleeve, liquid flow channel constitutes through network heat dissipation flow channel, and the first heat dissipation sleeve and second heat dissipation sleeve are all formed with liquid distribution pipe at corresponding liquid flow channel, and the other end of the liquid distribution pipe is connected with main flow pipe through.

[0010] As a preferred technical scheme of the present application, the inner wall of the first heat dissipation sleeve and the second heat dissipation sleeve is in contact with the outer wall of the tail nozzle through heat-conducting silica gel, the outer wall of the tail nozzle is provided with a nozzle, and the first heat dissipation sleeve and the second heat dissipation sleeve are provided with a through hole corresponding to the nozzle.

[0011] As a preferred technical solution of the present application, the first heat sink is provided with a butt joint groove on one side close to the second heat sink, the second heat sink is provided with a butt joint pipe on one side close to the first heat sink, and the butt joint pipe is inserted into the inner wall of the butt joint groove.

[0012] As a preferred technical solution of the present application, the outer diameter of the butt joint pipe is equal to the outer diameter of the butt joint groove, and the inner diameter of the butt joint pipe is smaller than the inner diameter of the butt joint groove, and the sealing rubber pads are arranged on the sides close to each other of the positioning lugs.

[0013] As a preferred technical solution of the present application, the bolts are used for the sealing butt joint and fastening of the first heat sink and the second heat sink.

[0014] As a preferred technical solution of the present application, the liquid flow channel is in a through structure with the butt joint groove and the butt joint pipe, and the liquid circulation control mechanism is connected between the two main flow pipes, the main flow pipe above the first heat sink is the water inlet end, and the main flow pipe below the second heat sink is the water outlet end.

[0015] (Three) beneficial effects

[0016] The beneficial effects of the present application are:

[0017] 1. The utility model discloses a butt joint structure, which is wrapped around the outer wall of the tail nozzle, and the internal liquid circulation is realized through the through internal heat dissipation flow channel of the first heat sink and the second heat sink, so that the service life of each part of the smoking machine is improved.

[0018] 2. The utility model discloses a butt joint structure, which is more convenient to disassemble and assemble, and can facilitate the disassembly and maintenance in the later use, compared with the traditional integrated structure, which is convenient for maintenance. DRAWINGS

[0019] Figure 1 It is an installation state structure schematic view of the utility model;

[0020] Figure 2 It is a tail nozzle axis section structure schematic view of the utility model;

[0021] Figure 3 It is a heat dissipation assembly explosion structure schematic view of the utility model;

[0022] Figure 4 It is a first heat sink overall structure schematic view of the utility model;

[0023] Figure 5 It is a liquid flow channel opening state structure schematic view of the utility model.

[0024] In the drawings:

[0025] 1. Radiating assembly; 11. First radiating jacket; 12. Second radiating jacket; 13. Positioning lug; 14. Butt joint groove; 15. Butt joint pipe; 2. Tail nozzle; 21. Nozzle; 3. Liquid flow channel; 31. Distributing pipe; 32. Main flow pipe; 4. Bolt fastener. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0027] As Figures 1-5 shown, the present application provides a radiating structure of a smoke generator of a turbojet engine, comprising a radiating assembly 1, the radiating assembly 1 comprising a first radiating jacket 11 and a second radiating jacket 12, the first radiating jacket 11 and the second radiating jacket 12 being wrapped outside a tail nozzle 2 after butt joint, and the first radiating jacket 11 and the second radiating jacket 12 each being provided with a positioning lug 13 on a side close to each other; a liquid flow channel 3, the liquid flow channel 3 being provided inside the first radiating jacket 11 and the second radiating jacket 12, and the liquid flow channel 3 constituting a through-type mesh radiating flow channel after the first radiating jacket 11 and the second radiating jacket 12 are sealed and butt jointed, and the first radiating jacket 11 and the second radiating jacket 12 each being through-type formed with a distributing pipe 31 at the position corresponding to the liquid flow channel 3, and the other end of the distributing pipe 31 being commonly connected with a main flow pipe 32, the tail nozzle 2 being capable of being subjected to external circulating water cooling treatment through the wrapping of the first radiating jacket 11 and the second radiating jacket 12, and the liquid flow channel 3 being capable of injecting circulating water inside through the setting of an external liquid circulating control mechanism, so as to realize efficient radiating treatment of the tail nozzle 2, avoid a large amount of high temperature being generated inside the tail nozzle 2 during continuous operation, and thus avoid thermal fatigue of the tail nozzle 2 under continuous high temperature, and the liquid flow channel 3 constituting a through-type mesh radiating flow channel being capable of ensuring the uniformity of liquid flow inside the first radiating jacket 11 and the second radiating jacket 12, so as to improve the uniformity of radiating of the tail nozzle 2.

[0028] Further, the inner walls of the first heat sink 11 and the second heat sink 12 are in contact with the outer wall of the tail nozzle 2 through the heat-conducting silica gel, the outer wall of the tail nozzle 2 is provided with a nozzle 21, and the first heat sink 11 and the second heat sink 12 are provided with through holes corresponding to the nozzle 21. Through the arrangement of the heat-conducting silica gel, the uniformity of the contact between the first heat sink 11 and the second heat sink 12 and the outer wall of the tail nozzle 2 can be improved, thereby improving the stability of heat dissipation and ensuring the heat conduction treatment of the tail nozzle 2.

[0029] Further, the side of the first heat sink 11 close to the second heat sink 12 is provided with a butt joint groove 14, the side of the second heat sink 12 close to the first heat sink 11 is provided with a butt joint pipe 15, the butt joint pipe 15 is inserted into the inner wall of the butt joint groove 14, the outer diameter of the butt joint pipe 15 is equal to the outer diameter of the butt joint groove 14, and the inner diameter of the butt joint pipe 15 is smaller than the inner diameter of the butt joint groove 14. The side of the positioning lug 13 close to each other is provided with a sealing rubber pad. Through the insertion connection of the butt joint groove 14 and the butt joint pipe 15, the first heat sink 11 and the second heat sink 12 are butted to ensure that the liquid flow channel 3 is spliced into a sealed flow channel, avoiding leakage of the circulating liquid and improving the sealing performance of the butt joint.

[0030] Further, the positioning lug 13 is penetrated by a bolt fastener 4, and the bolt fastener 4 is used for sealing butt joint fastening of the first heat sink 11 and the second heat sink 12. The bolt fastener 4 mainly includes a bolt and a nut. By continuously tightening the bolt and the nut, the extrusion contact of the positioning lug 13 is realized, thereby realizing the sealing performance of the butt joint of the first heat sink 11 and the second heat sink 12, ensuring the stability of the wrapping of the outer wall of the tail nozzle 2, and avoiding random rotation.

[0031] Further, the liquid flow channel 3, the butt joint groove 14 and the butt joint pipe 15 are in through structure, and the liquid circulation control mechanism is connected between the two main flow pipes 32. The main flow pipe 32 above the first heat sink 11 is the water inlet end, and the main flow pipe 32 below the second heat sink 12 is the water outlet end. Through the arrangement of the external liquid circulation control mechanism, the liquid is added to the inside of the liquid flow channel 3 through the water inlet end, and the liquid is collected again through the water outlet end to realize liquid circulation. The liquid can be clean water or mixed cooling water to realize heat dissipation treatment of the high temperature of the tail nozzle 2. The liquid circulation control mechanism mainly consists of a water storage tank and a circulating water pump. Through the work of the circulating water pump, water is added to the water inlet end, and the water source is discharged from the water outlet end and collected in the water storage tank, so as to facilitate the water source extraction of the circulating water pump, thereby realizing the liquid circulation work.

[0032] Working principle; first to the first heat sink 11 and the second heat sink 12 installation combination, through the penetration of bolt fastener 4 fastening, so that the first heat sink 11 and the second heat sink 12 tightly wrapped in the outside of the tail nozzle 2, between the two main flow pipe 32 carry out liquid circulation control mechanism installation, when the liquid circulation control mechanism work, through the first heat sink 11 and the second heat sink 12 spliced liquid flow channel 3 on the tail nozzle 2 heat treatment, reduce the tail nozzle 2 high temperature state under the continuous work.

[0033] The above is only the preferred specific implementation of the present application, but the protection scope of the present application is not limited to this, any skilled in the art of the technical personnel in the technical range disclosed by the present application, according to the technical scheme of the present application and the utility model concept to equivalent replacement or change, should be covered in the protection scope of the present application.

Claims

1. A heat dissipating structure of a smoke generator of a turbojet engine, characterized in that: The application relates to a heat dissipation assembly (1) which comprises a first heat dissipation jacket (11) and a second heat dissipation jacket (12), the first heat dissipation jacket (11) and the second heat dissipation jacket (12) are wrapped outside a tail nozzle (2) after abutting, and positioning lugs (13) are arranged on the sides close to each other of the first heat dissipation jacket (11) and the second heat dissipation jacket (12). A liquid flow channel (3) is arranged inside the first heat dissipation jacket (11) and the second heat dissipation jacket (12), and the liquid flow channel (3) forms a through network heat dissipation flow channel after the first heat dissipation jacket (11) and the second heat dissipation jacket (12) are sealed and abutted, the first heat dissipation jacket (11) and the second heat dissipation jacket (12) are through-formed with liquid distribution pipes (31) corresponding to the liquid flow channel (3), and the other ends of the liquid distribution pipes (31) are through-connected with a main flow pipe (32).

2. The heat dissipation structure of a smoke generator of a turbojet engine according to claim 1, characterized in that: The inner walls of the first heat dissipation jacket (11) and the second heat dissipation jacket (12) are in contact with the outer wall of the tail nozzle (2) through heat-conducting silica gel, the outer wall of the tail nozzle (2) is provided with a nozzle (21), and the first heat dissipation jacket (11) and the second heat dissipation jacket (12) are provided with through holes corresponding to the nozzle (21).

3. The heat dissipation structure of a smoke generator of a turbojet engine according to claim 2, characterized in that: The side close to the second heat dissipation jacket (12) of the first heat dissipation jacket (11) is provided with an abutting groove (14), the side close to the first heat dissipation jacket (11) of the second heat dissipation jacket (12) is provided with an abutting pipe (15), and the abutting pipe (15) is inserted into the inner wall of the abutting groove (14).

4. The heat dissipating structure of a smoke generator of a turbojet engine according to claim 3, characterized in that: The outer diameter of the abutting pipe (15) is equal to the outer diameter of the abutting groove (14), the inner diameter of the abutting pipe (15) is smaller than the inner diameter of the abutting groove (14), and the sides close to each other of the positioning lugs (13) are provided with sealing rubber pads.

5. The heat dissipating structure of a smoke generator of a turbojet engine according to claim 1, characterized in that: Bolts (4) are arranged through the positioning lugs (13), and the bolts (4) are used for sealingly and abuttingly fastening the first heat dissipation jacket (11) and the second heat dissipation jacket (12).

6. The heat dissipation structure of a smoke generator of a turbojet engine according to claim 3, characterized in that: The liquid flow channel (3), the abutting groove (14) and the abutting pipe (15) are in a through structure, liquid circulation control mechanisms are connected between the two main flow pipes (32), the main flow pipe (32) above the first heat dissipation jacket (11) is a water inlet end, and the main flow pipe (32) below the second heat dissipation jacket (12) is a water outlet end.

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