Bevel spray pipe cabin with thermal protection function

Abstract

The utility model discloses a beveled spray pipe cabin with a thermal protection function. The beveled spray pipe cabin comprises a spray pipe cabin body and beveled spray pipes circumferentially distributed on the side wall of the spray pipe cabin body. The sealing device is characterized by further comprising a sealing ring for thermal protection, a sealing ring pressing plate and a fastening screw, the sealing ring is an annular-plate-shaped piece formed by conducting mold pressing on an ethylene propylene diene monomer material, the sealing ring pressing plate is an annular-plate-shaped piece formed by machining a metal material, and the sealing ring and the sealing ring pressing plate are connected to the outer walls of the beveled spray pipes in a sleeved mode respectively. The sealing ring and the sealing ring pressing plate are fixed to the inner wall of the spray pipe cabin body at the same time through fastening screws, and the sealing ring forms sealing protection on the connecting position of the beveled spray pipe and the spray pipe cabin body. According to the beveled spray pipe cabin, hot air flow generated by working of an engine in the flying process of the rocket projectile is prevented from being transmitted inwards.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of guided missile and rocket, concretely relates to a slanting cut nozzle cabin with heat protection. BACKGROUND

[0002] In recent years, many countries led by the United States and Russia have launched a "high-speed flight fever", and have made high-speed vehicles as the strategic goal of future military research. However, the extremely high flight speed also puts forward strict technical challenges to the flight control, airframe structure optimization and heat protection of high-speed vehicles. The heat sealing material is an important part of the heat protection system of high-speed vehicles. When the hypersonic vehicle flies at a very fast speed in the atmosphere, the temperature of the surface of the vehicle rises sharply due to the effect of aerodynamic heating, and the heat flow will enter the inside of the vehicle along the gap between the components of the vehicle, causing the safety hazard of heat erosion. For example, there are usually gap structures between different cabin sections, windows, heat insulation component joints and control surfaces of the vehicle. These gap structures are often the weak link of the heat protection system of the vehicle. During the propulsion process of the engine, the fuel combustion will produce extremely high temperature, so the heat protection of the hot end components of the engine must be effective. Therefore, in order to prevent the surface heat flow from transferring inward, it is necessary to use heat sealing materials to seal the gap between the components for a long time. CONTENT OF THE UTILITY MODEL

[0003] The utility model discloses a slanting cut nozzle cabin with heat protection, which can prevent the hot gas flow generated by the engine during the flight process of the rocket from causing heat erosion to the slanting cut nozzle cabin.

[0004] The utility model discloses a slanting cut nozzle cabin with heat protection, which can prevent the hot gas flow generated by the engine during the flight process of the rocket from causing heat erosion to the slanting cut nozzle cabin.

[0005] The utility model discloses a slanting cut nozzle cabin with heat protection, which can prevent the hot gas flow generated by the engine during the flight process of the rocket from causing heat erosion to the slanting cut nozzle cabin.

[0006] The sealing ring is a ring plate shaped piece molded by ethylene-propylene-diene rubber material, and the inner ring size of the sealing ring matches the gap size of the slanting cut nozzle at the connection of the slanting cut nozzle and the nozzle cabin body.

[0007] The sealing ring pressure plate is a ring plate shaped piece processed by metal material, and the size of the sealing ring pressure plate matches the size of the sealing ring.

[0008] The sealing ring and the sealing ring pressing plate are sleeved on the outer wall of each inclined cutting nozzle respectively, and are fixed on the inner wall of the nozzle cabin body through the fastening screw, and the sealing ring forms sealing protection on the connection between the inclined cutting nozzle and the nozzle cabin body.

[0009] Beneficial effects:

[0010] The inclined cutting nozzle cabin satisfies the heat sealing requirement of the small space inclined cutting nozzle cabin body, and prevents the heat flow generated by the engine working from transferring inward during the flight of the rocket projectile. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 is a structural schematic view of the inclined cutting nozzle cabin of the utility model;

[0012] In the figure, 1 is a nozzle cabin body, 2 is a sealing ring, 3 is a sealing ring pressing plate, 4 is an inclined cutting nozzle, and 5 is a fastening screw. DETAILED DESCRIPTION

[0013] The content of the utility model will be further described below in combination with the drawings and examples:

[0014] Examples

[0015] As Figure 1 shown, the utility model discloses an inclined cutting nozzle cabin with heat protection, which comprises a nozzle cabin body 1, inclined cutting nozzles 4 distributed in the circumferential direction on the side wall of the nozzle cabin body 1, and a sealing ring 2, a sealing ring pressing plate 3 and a fastening screw 5 for heat protection.

[0016] The sealing ring 2 is a ring plate shaped piece molded by ethylene-propylene-diene rubber material, and the inner ring size of the sealing ring 2 matches the size of the notch at the connection between the nozzle cabin body 1 and the inclined cutting nozzle 4.

[0017] The sealing ring pressing plate 3 is a ring plate shaped piece processed by metal material, and the size of the sealing ring pressing plate 3 matches the size of the sealing ring 2.

[0018] The sealing ring 2 and the sealing ring pressing plate 3 are sleeved on the outer wall of each inclined cutting nozzle 4 respectively, and are fixed on the inner wall of the nozzle cabin body 1 through the fastening screw 5, and the sealing ring 2 forms sealing protection on the connection between the inclined cutting nozzle 4 and the nozzle cabin body 1.

Claims

1. A canted nozzle pod with thermal protection comprising a nozzle pod body, a canted nozzle circumferentially distributed about a side wall of said nozzle pod body; characterized by, The sealing ring, the sealing ring pressing plate, and the fastening screw are used for heat protection. The sealing ring is a ring plate shaped part molded by ethylene-propylene-diene monomer material, and the inner ring size of the sealing ring matches the size of the gap at the connection between the nozzle cabin and the bevel nozzle. The sealing ring pressing plate is a ring plate shaped part processed by metal material, and the size of the sealing ring pressing plate matches the size of the sealing ring. The sealing ring and the sealing ring pressing plate are respectively sleeved on the outer wall of each bevel nozzle, and the sealing ring and the sealing ring pressing plate are simultaneously fixed on the inner wall of the nozzle cabin through the fastening screw, and the sealing ring forms sealing protection for the connection between the bevel nozzle and the nozzle cabin.

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