Electromagnetic shielding observation window of airplane

Abstract

The utility model relates to an airplane electromagnetic shielding observation window, which belongs to the technical field of aeronautical materials and comprises inner layer glass and outer layer glass, two ends of the inner layer glass are connected with two ends of the outer layer glass to form an observation window cavity, small holes are respectively arranged at the upper end and the lower end of the inner layer glass, and air nozzles are respectively arranged in the small holes and communicated with the observation window cavity. Wherein an air nozzle is arranged at the lower end of the inner-layer glass, an air bag is arranged on the air nozzle at the lower end of the inner-layer glass, and a metal shielding layer is arranged on the surface of the inner-layer glass or the outer-layer glass. The problem that the light transmittance of the glass is influenced by condensed water formed under the high-altitude and low-temperature conditions when water vapor enters a hollow area is effectively avoided, and the pressure borne by the double-layer hollow glass under different environments such as the ground and the high altitude can be adjusted through the rubber air bag.

Description

Technical Field

[0001] The utility model relates to an electromagnetic shielding observation window for an aircraft, belonging to the technical field of aviation materials. Background Art

[0002] Aviation organic glass has good optical, strength, heat resistance, aging resistance, and UV resistance, especially small optical distortion and angular displacement. Therefore, it is widely used in aircraft observation windows and other parts with high optical quality requirements. For aircraft observation windows with electromagnetic shielding requirements, organic glass is prone to condensation, which affects the light transmittance of the observation window. If double-layer glass is used, it is difficult to adjust the pressure between the glass. Utility Model Content

[0003] Technical problem solved by the utility model: The utility model proposes an aircraft electromagnetic shielding observation window, which can solve the aircraft's demand for electromagnetic shielding of observation window glass, can effectively adjust the pressure between double-layer glass, and also effectively avoid the problem of water vapor entering the hollow area to form condensed water under high-altitude and low-temperature conditions affecting the light transmittance of the glass. It can also adjust the pressure of the double-layer hollow glass in different environments such as on the ground and at high altitudes through rubber airbags.

[0004] Technical Solution

[0005] An electromagnetic shielding observation window for an aircraft comprises an inner layer of glass and an outer layer of glass. The inner layer of glass is connected to the outer layer of glass at both ends to form an observation window cavity. Small holes are respectively arranged at the upper and lower ends of the inner layer of glass. Air nozzles are respectively installed in the small holes and are connected to the observation window cavity. An air bag is arranged on the air nozzle at the lower end of the inner layer of glass. A metal shielding layer is arranged on the surface of the inner layer of glass or the outer layer of glass.

[0006] Furthermore, a sealing cap is provided on the air nozzle at the upper end of the inner glass.

[0007] Furthermore, rubber rings are provided at the connection points between the two ends of the inner layer of glass and the outer layer of glass.

[0008] Furthermore, a metal shielding layer is adhered to the outer surface of the inner glass or the inner surface of the outer glass.

[0009] Furthermore, the metal shielding layer is a metal wire mesh.

[0010] Furthermore, the metal shielding layer is a plated conductive film.

[0011] Beneficial Effects

[0012] The utility model solves the electromagnetic shielding needs of aircraft for observation window glass, and also effectively avoids the problem of water vapor entering the hollow area to form condensed water under high altitude and low temperature conditions, affecting the light transmittance of the glass. It can also adjust the pressure that the double-layer hollow glass is subjected to in different environments such as on the ground and at high altitude through rubber airbags. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the utility model;

[0014] Among them, 1-inner glass, 2-metal shielding layer, 3-outer glass, 4-rubber ring, 5-air nozzle, 6-air bag, 7-sealing cap. DETAILED DESCRIPTION

[0015] like Figure 1 As shown, the following structure is formed, including: an inner layer of glass 1, a metal shielding layer 2, an outer layer of glass 3, a rubber ring 4, an air nozzle 5, an air bag 6, and a sealing cap 7.

[0016] The metal shielding layer 2 is adhered to the inner surface of the inner glass 1 or the outer surface of the outer glass 3, and the inner and outer glasses are in a hollow state; a rubber ring 4 is adhered between the inner and outer glass circumferences for sealing the inner and outer glasses, and two small holes are drilled in the upper and lower parts of the inner glass 1 for installing the air nozzle 5; before installing the glass, a nitrogen rubber airbag 6 should be used to inflate the upper air nozzle 5 to ensure that all the air between the double-layer glass is discharged, and at the same time, the rubber airbag 6 is installed on the lower air nozzle 5, and after ensuring that the rubber airbag 6 is filled with 1 / 2 nitrogen, the upper air nozzle is quickly sealed with a sealing cap 7.

[0017] It not only solves the electromagnetic shielding needs of aircraft for observation window glass, but also effectively avoids the problem of water vapor entering the hollow area and forming condensation water under high altitude and low temperature conditions, affecting the light transmittance of the glass. It can also adjust the pressure of the double-layer hollow glass in different environments such as on the ground and at high altitude through rubber airbags.

[0018] The manufacturing process of the utility model is as follows: after the inner and outer window glasses 3 are blown or pressed, small holes for installing the gas nozzles are drilled at both ends of the inner glass 1, a layer of metal mesh or a conductive film is pasted on the outer surface of the inner glass 1 (or the inner surface of the outer glass 3), and then the inner and outer glass are bonded to the rubber ring 4, and the gas nozzle 5 is bonded, nitrogen is introduced into the hollow area of ​​the double-layer glass through the gas nozzle 5, and a rubber airbag 6 is installed, and finally nitrogen is filled through the upper gas nozzle 5 until about 1 / 2 of the nitrogen is filled into the rubber airbag 6, and the upper gas nozzle is quickly sealed with a sealing cap 7.

[0019] The inner cavity of the double-layer glass is connected to the rubber airbag 6 through the air nozzle 5. When the aircraft is on the ground, the pressure inside and outside the cabin is balanced, and the temperature inside and outside the cabin is also basically the same.

[0020] (1) When the aircraft is at high altitude, the cabin pressure is normal atmospheric pressure, but the pressure outside the cabin is low. The inner and outer layers of glass are subjected to different pressures. After the inner cavity of the glass is squeezed, there is only 1 / 2 nitrogen in the original rubber airbag 6. Because the nitrogen between the inner and outer layers of glass 3 enters the rubber airbag 6 through the air nozzle 5, the rubber airbag 6 will swell. In this way, the gas pressure between the double layers of glass can be balanced.

[0021] (2) When the aircraft is at high altitude, the temperature difference between the inside and outside of the cabin is large. If air is introduced into the hollow area of ​​the double-layer glass, the water vapor in the air will condense to form condensed water. However, since dry nitrogen is introduced between the double-layer glass, the influence of condensed water on the light transmittance of the glass is effectively avoided. In addition, considering that air may enter the connection of the airbag 6, the installation of the air nozzle 5, and the installation of the sealing cap 7 during the use of the glass, it is allowed to remove the sealing cap 7 and the airbag 6 during use, introduce dry nitrogen into the glass, exhaust the air in the hollow area of ​​the double-layer glass, and reinstall the airbag and sealing cap.

[0022] At the same time, since a metal shielding layer 2 is pasted between the double-layer glass and conductive material is filled around the glass when the glass is installed, it can ensure that the metal shielding layer 2 in the glass is conductive to the aircraft body, effectively solving the electromagnetic shielding needs of the aircraft observation window glass.

Claims

1. An aircraft electromagnetic shielding observation window, characterized in that: It comprises an inner layer of glass and an outer layer of glass, wherein the inner layer of glass and the outer layer of glass are connected at both ends to form an observation window cavity, small holes are respectively arranged at the upper and lower ends of the inner layer of glass, air nozzles are respectively installed in the small holes and are connected with the observation window cavity, wherein an air bag is arranged on the air nozzle at the lower end of the inner layer of glass, and a metal shielding layer is arranged on the surface of the inner layer of glass or the outer layer of glass.

2. The electromagnetic shielding observation window for aircraft according to claim 1, characterized in that: A sealing cap is arranged on the air nozzle at the upper end of the inner glass.

3. The electromagnetic shielding observation window for aircraft according to claim 1, characterized in that: Rubber rings are arranged at the connection points of the inner glass layer and the outer glass layer at both ends.

4. The electromagnetic shielding observation window for aircraft according to claim 1, characterized in that: A metal shielding layer is pasted on the outer surface of the inner glass or the inner surface of the outer glass.

5. The electromagnetic shielding observation window for aircraft according to claim 1, characterized in that: The metal shielding layer is a metal wire mesh.

6. The electromagnetic shielding observation window for aircraft according to claim 1, characterized in that: The metal shielding layer is a plated conductive film.

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