CN218818116U - Mouth cover sealing structure - Google Patents
Mouth cover sealing structure Download PDFInfo
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- CN218818116U CN218818116U CN202222692595.4U CN202222692595U CN218818116U CN 218818116 U CN218818116 U CN 218818116U CN 202222692595 U CN202222692595 U CN 202222692595U CN 218818116 U CN218818116 U CN 218818116U
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- flap
- sealing
- sealing strip
- metal plate
- plate bending
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Abstract
The application belongs to the technical field of this aviation is sealed, in particular to mouth lid seal structure, and it includes: covering a cover; a flap reinforcement fixedly attached to an inner surface of the flap skin; the metal plate bending piece is arranged on the inner surface of the opening cover reinforcing piece and is distributed along the circumferential direction of the opening cover, the metal plate bending piece comprises a bottom plate and side edges bent towards the middle, and a groove for mounting a sealing strip is formed by the bottom plate and the side edges; the sealing strip comprises a tubular sealing part and a mounting part mounted in the groove; the sealing belt is arranged on the periphery of the opening cover along the metal plate bending piece; when the flap was closed, the flap frame compressed tightly the sealing realized sealedly, and this application sets up the sawtooth and trailing on the tubulose sealing, increases sealed effect, increases in addition to the sealed hole in cabin, realizes the effect of self sealedly.
Description
Technical Field
The application belongs to the technical field of aviation sealing, and particularly relates to a mouth cover sealing structure.
Background
An airplane is provided with a plurality of openings for filling, maintenance, installation and the like, particularly a cover in a pressurizing area, and the cover is airtight and watertight. The sealing effect of the cover cap depends on the type of the sealing strip, in addition, the service time of the airplane is long, and the installation and the replacement of the sealing strip need to be convenient. The traditional domestic aviation sealing belts are mostly tubular, strip or claw-shaped sealing belts. The sealing belt of the inflation tube with better sealing performance is not easy to adopt due to the defects of high cost and complex use and maintenance.
SUMMERY OF THE UTILITY MODEL
In order to solve the above problems, the present application provides a mouth cap sealing structure,
it comprises the following steps: covering a cover with a cover;
a flap reinforcement fixedly attached to an inner surface of the flap skin;
the metal plate bending piece is arranged on the inner surface of the opening cover reinforcing piece and is distributed along the circumferential direction of the opening cover, the metal plate bending piece comprises a bottom plate and side edges bent towards the middle, and a groove for mounting a sealing strip is formed by the bottom plate and the side edges;
the sealing strip comprises a tubular sealing part and a mounting part mounted in the groove; the sealing belt is arranged on the periphery of the opening cover along the metal plate bending piece; when the cover is closed, the cover frame compresses the sealing part to realize sealing.
Preferably, the sealing portion tip has a serrated contact edge that increases a contact area with the flap frame.
Preferably, the serrated contact edge has a trailing edge adjacent the inside of the flap, the trailing edge abutting the flap frame when the flap frame compresses the sealing strip.
Preferably, the thickness of the trailing edge decreases from root to tip.
Preferably, the side edge of the plate bending piece is parallel to the bottom plate through bending.
Preferably, the sealing strip has a vent hole.
Preferably, the vent hole is opened towards the inside of the sealed cabin.
The advantages of the present application include: the sealing of the cover cap at this time adopts a novel sealing strip, and the sealing cabin and the outside atmosphere of the airplane are sealed through the cover cap; when the flap was in the closed condition, the sealing band received the precompression effect, and the sealing band of fixing at flap top contacts with the fuselage door frame, produces initial contact pressure on the sawtooth contact edge to produce the compression volume, obtain the sealed effect in advance, the flap frame is hugged closely when the flap frame compresses tightly the sealing band to the tailing limit, realizes inseparabler sealed effect.
In the process of high-altitude flight of the airplane, the pressure of the sealed cabin is higher than the external atmospheric pressure in a normal state. At the moment, under the pressure of medium air in the sealed cabin, the sealing belt generates a self-tightening effect, and the sealing effect is enhanced through the contact pressure rise of the sawtooth contact edge. The vent hole is connected with the medium air in the sealed cabin, the pressure in the pipe of the sealing part is increased along with the increase of the medium pressure, namely, the sealing tape has self-tightening performance, and the sealing tape achieves the required air tightness by combining the factors.
When the aircraft encounters a gust in flight, the height is suddenly reduced or the rudiment of the airtight cabin is accidentally damaged, the pressure in the airtight cabin is lower than the external atmospheric pressure in a short time, and the negative pressure condition occurs. In this case, a certain pressing load of the sealing strip is ensured due to the tubular structure of the sealing strip. Under the supporting action of the tubular section, the claw-shaped structure of the sealing strip is prevented from being turned over under the action of pressure, and the sealing capability of the sealing strip in a negative pressure state is ensured. On the other hand, the sealing tape has fixed elasticity, so that the sealing tape is not changed due to the change of the pressure difference, and the stability of the sealing performance is ensured.
When the flap is in a closed state, the tubular cavity and the trailing edge of the sealing strip are elastically deformed to a certain extent. Due to the extrusion load formed by closing the cover, the sealing strip is more tightly attached to the opening frame of the airplane, and the watertight performance of the sealing strip is enhanced. Meanwhile, the contact area of the sealing belt and the extrusion surface of the cover frame is increased by the sawtooth contact edge and the trailing edge of the sealing belt.
Drawings
Fig. 1 is a flap sealing structure of a preferred embodiment of the present application.
Detailed Description
In order to make the implementation objects, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be described in more detail below with reference to the accompanying drawings in the embodiments of the present application. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are implementations that are part of this application and not all implementations. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used for explaining the present application and should not be construed as limiting the present application. All other embodiments obtained by a person of ordinary skill in the art without any inventive work based on the embodiments in the present application are within the scope of protection of the present application. Embodiments of the present application will be described in detail below with reference to the drawings.
In order to solve the above problems, the present application provides a flap seal structure for isolating a sealed cabin of an aircraft from the outside atmosphere, as shown in figure 1,
the flap seal structure includes: a flap skin 1;
a flap reinforcement 5 fixedly connected to an inner surface of the flap skin 1;
the metal plate bending part 3 is arranged on the inner surface of the opening cover reinforcing part 5, the metal plate bending part 3 is distributed along the circumferential direction of the opening cover, the metal plate bending part 3 comprises a bottom plate and side edges bent towards the middle, and the bottom plate and the side edges form a groove for mounting a sealing belt 4;
the sealing strip 4 comprises a tubular sealing part and a mounting part mounted in the groove; the sealing strip 4 is arranged on the periphery of the opening cover along the metal plate bending piece 3; when the flap was closed, the flap frame compressed tightly the sealing part realizes sealedly, the sealing part top has sawtooth contact limit, the area of contact of sawtooth contact limit increase and flap frame, sawtooth contact limit has the tail limit of dragging near the flap inboard, the tail limit hugs closely the flap frame when the flap frame compresses tightly sealing strip 4. The thickness of the trailing edge is gradually reduced from the root to the tip, and the root with the larger thickness can provide larger supporting force.
Preferably, the side edge of the bent plate 3 is parallel to the bottom plate by bending, so that the bent plate 3 has a C-shaped section, and 180-degree bending at two ends forms a plane parallel to the bottom, so as to better support the deformed sealing part.
The sealing strip 4 is provided with a vent hole, on one hand, deformation can be generated well, and when the opening direction of the vent hole faces to the inside of the sealing cabin, the sealing part is inflated and expanded due to the vent hole because the pressure in the sealing cabin is larger than the pressure outside the sealing cabin, so that self sealing is realized.
The advantages of the present application include: the sealing of the cover cap at this time adopts a novel sealing strip, and the sealing cabin and the outside atmosphere of the airplane are sealed through the cover cap; when the flap was in the closed condition, the sealing band received the precompression effect, and the sealing band of fixing at flap top contacted with the fuselage door frame, produced initial contact pressure on the sawtooth contact edge to produce the compression volume, obtain the sealed effect in advance, the flap frame is hugged closely when the flap frame compresses tightly sealing band 4 to the tailing limit, realizes inseparabler sealed effect.
During the high-altitude flight of the airplane, the pressure of the sealed cabin is higher than the external atmospheric pressure in a normal state. At the moment, under the pressure of medium air in the sealed cabin, the sealing belt generates a self-tightening effect, and the sealing effect is enhanced through the contact pressure rise of the sawtooth contact edge. The vent hole is connected with the medium air in the sealed cabin, the pressure in the pipe of the sealing part is increased along with the increase of the medium pressure, namely, the sealing tape has self-tightening performance, and the sealing tape achieves the required air tightness by combining the factors.
When the aircraft encounters a gust in flight, the height is suddenly reduced or the rudiment of the airtight cabin is accidentally damaged, the pressure in the airtight cabin is lower than the external atmospheric pressure in a short time, and the negative pressure condition occurs. In this case, a certain pressing load of the sealing strip is ensured due to the tubular structure of the sealing strip. Under the supporting action of the tubular section, the claw-shaped structure of the sealing strip is prevented from being turned over under the action of pressure, and the sealing capability of the sealing strip in a negative pressure state is ensured. On the other hand, the sealing tape has fixed elasticity, so that the sealing tape cannot be changed due to the change of the pressure difference, and the stability of the sealing performance is ensured.
When the flap is in a closed state, the tubular cavity and the trailing edge of the sealing strip are elastically deformed to a certain extent. Due to the extrusion load formed by closing the cover, the sealing strip is more tightly attached to the opening frame of the airplane, and the watertight performance of the sealing strip is enhanced. Meanwhile, the contact area of the sealing belt and the extrusion surface of the flap frame is increased by the sawtooth contact edge and the trailing edge of the sealing belt.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present application should be covered within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (7)
1. A flap seal arrangement, comprising:
a flap skin (1);
a flap reinforcement (5) fixedly connected to the inner surface of the flap skin (1);
the metal plate bending part (3) is arranged on the inner surface of the opening cover reinforcing part (5), the metal plate bending part (3) is distributed along the circumferential direction of the opening cover, the metal plate bending part (3) comprises a bottom plate and a side edge bent towards the middle, and a groove for installing a sealing strip (4) is formed by the bottom plate and the side edge;
the sealing strip (4), the sealing strip (4) includes the tubular seal portion and installs the installation department in the said ditch groove; the sealing strip (4) is arranged on the periphery of the opening cover along the metal plate bending piece (3); when the cover is closed, the cover frame compresses the sealing part to realize sealing.
2. The flap seal structure of claim 1, wherein the seal portion top end has a serrated contact edge that increases a contact area with the flap frame.
3. A flap sealing arrangement according to claim 2, characterized in that said serrated contact edge has a trailing edge near the inner side of the flap, said trailing edge abutting against said trailing edge when the flap frame compresses the sealing strip (4).
4. The flap seal structure of claim 3, wherein said trailing edge tapers in thickness from root to tip.
5. A flap seal according to claim 1, characterized in that the side of the bent piece (3) is parallel to said base plate by bending.
6. A flap sealing structure according to claim 1, characterized in that the sealing strip (4) has ventilation holes.
7. The flap sealing structure of claim 6, wherein said vent hole is opened toward the inside of the sealed compartment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222692595.4U CN218818116U (en) | 2022-10-12 | 2022-10-12 | Mouth cover sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222692595.4U CN218818116U (en) | 2022-10-12 | 2022-10-12 | Mouth cover sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218818116U true CN218818116U (en) | 2023-04-07 |
Family
ID=87268839
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222692595.4U Active CN218818116U (en) | 2022-10-12 | 2022-10-12 | Mouth cover sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218818116U (en) |
-
2022
- 2022-10-12 CN CN202222692595.4U patent/CN218818116U/en active Active
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