CN212903769U

CN212903769U - Helium mass spectrum leakage detection flexible paving assisting device for aircraft sealed oil tank

Info

Publication number: CN212903769U
Application number: CN202021471883.1U
Authority: CN
Inventors: 程文波; 邢钰羚; 白天慧
Original assignee: Xifei International Aviation Manufacturing Tianjin Co ltd
Current assignee: Xifei International Aviation Manufacturing Tianjin Co ltd
Priority date: 2020-07-23
Filing date: 2020-07-23
Publication date: 2021-04-06
Anticipated expiration: 2030-07-23

Abstract

The utility model relates to the technical field of the sealing detection of the whole fuel tank of the airplane wing, and discloses a helium mass spectrum leakage detection flexible paving device of the airplane sealing fuel tank, which comprises a light base body, an inflatable air bag and a flexible silica gel layer, wherein the light base body adopts a rectangular smooth appearance design, a T-shaped groove is arranged at the periphery of the light base body, and a connecting point connected with the whole fuel tank structure of the wing is arranged inside the light base body; the inflatable air bag comprises a base body connecting portion and an inflatable layer, the base body connecting portion is of a T-shaped rubber structure matched with the T-shaped groove, the inflatable layer comprises a bottom layer and an independent air bag, the bottom layer is of a solid rubber structure, the bottom layer is made of rubber with different layer hardness, and the bottom layer is paved on one side of the light base body to the outer side layer by layer. The utility model provides the high flexibility degree of shutoff frock can be applicable to the sealed detection of aircraft wing oil tank of different models, has reduced the installation and the leakproofness confirmation work of a large amount of special shutoff frocks scattered simultaneously, very big improvement detection efficiency.

Description

Helium mass spectrum leakage detection flexible paving assisting device for aircraft sealed oil tank

Technical Field

The utility model relates to an aircraft wing whole oil tank seals and detects technical field, especially relates to aircraft sealed oil tank helium mass spectrum leak hunting flexibility and spreads and help the device.

Background

The integral fuel tank of the airplane wing effectively utilizes the inner space of the airplane wing as the storage space of airplane aviation fuel oil on the basis of the traditional rubber fuel tank of the airplane, greatly improves the space utilization rate of the airplane wing, but further improves the requirement on the sealing performance of the space structure of the airplane wing, so that the sealing performance detection of the wing fuel tank is strictly carried out in the airplane assembly stage. In the sealing detection work of the whole oil tank of the airplane wing at the present stage, because the butt joint of the wing component and the central wing of the airplane body is not completed, a closed cavity is not formed, the separation surface of the wing and the airplane body and the cover of the oil tank of the wing need to be sealed and plugged to form an independent closed cavity structure of the wing component, and the sealing detection is convenient.

At present, when the sealing plugging of an open area of an aircraft wing boundary is carried out, a special plugging tool needs to be designed and manufactured according to the space structure condition of each part needing plugging, the sealing plugging of the communication part of the open area and an oil tank needs to be carried out, the structure condition of each position is inconsistent, the matching and the installation of the plugging tools need to be carried out one by one, the existing sealing plugging tool is in contact sealing with the aircraft structure in a rigid structure and rubber interlayer mode, if the installation position or the angle is slightly deviated, the sealing performance cannot be guaranteed, the sealing of all the communication parts can only be completed, the aircraft wing oil tank is inflated and pressurized, the leakage of the sealing plugging parts is detected and eliminated in advance, and the sealing detection work of the aircraft wing oil tank can be carried out only after the strict sealing is guaranteed.

To sum up, in the sealed auxiliary fixtures field that detects of aircraft wing oil tank, have following problem point:

1. the plugging part has high specificity, the structures of sealing and plugging auxiliary tools at each part are different, and accurate matching is required during installation;

2. the structure of the sealing and plugging tool belongs to rigid connection, the sealing and plugging tool is connected with the structure of the wing of the airplane through rubber cushion and contact sealing, if the mounting position or the mounting angle deviates, the sealing cannot be realized, whether the sealing is realized or not is confirmed according to the large leakage detection result of the whole oil tank of the wing of the airplane, and the subsequent sealing detection can be carried out only after the leakage point is eliminated, the sealed oil tank of the airplane needs to be inflated for many times in the process of eliminating the leakage point, the plugging and sealing effect of the boundary area of the wing is searched, and the part with large leakage needs to be adjusted repeatedly to ensure that the sealing meets the requirement;

3. an operator needs to accurately identify and confirm the appearance and the installation position of each sealing and plugging tool, and the sealing and plugging tool is accurately installed to ensure the sealing effect.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problem in the background art, and the flexible device that helps of leak hunting of aircraft seal oil tank helium mass spectrum that provides.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the helium mass spectrum leak detection flexible paving device for the aircraft sealed oil tank comprises a light base body, an inflatable air bag and a flexible silica gel layer, wherein the light base body is designed in a rectangular smooth shape, a T-shaped groove is formed in the periphery of the light base body, and a connecting point connected with an integral wing oil tank structure is arranged in the light base body;

the inflatable air bag comprises a base body connecting portion and an inflatable layer, the base body connecting portion is of a T-shaped rubber structure matched with the T-shaped groove, the inflatable layer comprises a bottom layer and independent air bags, the bottom layer is of a solid rubber structure and is 10cm in thickness, the bottom layer is made of 10 layers of rubber with different hardness, the bottom layer is paved and pasted layer by layer from one side of the light base body to the outer side, the independent air bags and the bottom layer are integrally formed and manufactured, and an inflatable connector and a pressure release valve are arranged on the outer wall of each independent air bag;

the thickness of the silica gel layer of the flexible silica gel layer is 20cm, and the flexible silica gel layer is fixed with the inflation layer in a bonding mode.

Preferably, an aluminum structural member is embedded in the inflatable airbag.

Preferably, the inflation interface is in a quick connector connection mode, and the pressure release valve is in a manual pressure release valve structure mode.

Preferably, the rigid connection of the inflated layer to the lightweight substrate is gradually cushioned to a soft rubber connection.

Preferably, the independent air bag bears an air pressure value of 35 Kpa.

Compared with the prior art, the utility model provides a flexible device of helping of spreading of aircraft sealed oil tank helium mass spectrum leak hunting possesses following beneficial effect:

1. the helium mass spectrum leak detection flexible paving assisting device for the aircraft sealed oil tank changes the traditional mechanical structure plugging process method through the light base body, the inflatable air bag, the flexible silica gel layer, the T-shaped groove, the base body connecting part, the inflatable layer, the bottom layer and the independent air bag, and is used for replacing a traditional rigid connection plugging tool with a sealing plugging assisting device with a flexible contact surface, so that the flexibility degree of the plugging tool is improved, the helium mass spectrum leak detection flexible paving assisting device can be suitable for sealing detection of aircraft wing oil tanks of different models, meanwhile, the installation and sealing confirmation work of a large number of scattered special plugging tools is reduced, and the detection efficiency is greatly improved.

The device in not relate to the part all the same with prior art or can adopt prior art to realize, the utility model provides high the flexibility degree of shutoff frock can be applicable to the sealed detection of aircraft wing oil tank of different models, has reduced the installation and the leakproofness of a large amount of scattered special shutoff frocks simultaneously and has confirmed work, very big improvement detection efficiency.

Drawings

Fig. 1 is a schematic structural diagram of a helium mass spectrometer leak detection flexible paving device for an aircraft sealed oil tank, which is provided by the utility model;

fig. 2 is a schematic sectional view along the direction a-a in fig. 1.

In the figure: the device comprises a light base body 1, an inflatable air bag 2, a flexible silica gel layer 3, a 4T-shaped groove, a base body connecting part 5, an inflatable layer 6, a bottom layer 7, an independent air bag 8, an inflatable interface 9 and a pressure release valve 10.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Referring to fig. 1-2, the helium mass spectrum leak detection flexible paving device for the aircraft sealed oil tank comprises a light base body 1, an inflatable air bag 2 and a flexible silica gel layer 3, wherein the light base body 1 is designed in a rectangular smooth shape, a T-shaped groove 4 is formed in the periphery of the light base body 1, a connection point connected with an integral wing oil tank structure is arranged in the light base body 1, and the plugging device can be safely and stably installed at a position, needing to be plugged, of the boundary position of the integral wing oil tank;

the inflatable air bag 2 comprises a base body connecting portion 5 and an inflatable layer 6, the base body connecting portion 5 is of a T-shaped rubber structure matched with the T-shaped groove 4, the inflatable layer 6 comprises a bottom layer 7 and an independent air bag 8, the bottom layer 7 is of a solid rubber structure and is 10cm in thickness, the bottom layer 7 is made of 10 layers of rubber with different hardness, the bottom layer 7 is paved and adhered to the outer side of the light base body 1 layer by layer from one side, the hard connection of the inflatable layer 6 and the light base body 1 is gradually buffered to the soft rubber connection, the independent air bag 8 and the bottom layer 7 are manufactured in an integrated forming mode, and an inflatable connector 9 and a pressure release valve 10 are;

the thickness of the silica gel layer of the flexible silica gel layer 3 is 20cm, the flexible silica gel layer 3 and the inflatable layer 6 are fixed in a bonding mode, and after the inflatable layer 6 is inflated, the flexible silica gel layer 3 is extruded to be in structural contact with the sealing and plugging part of the aircraft wing boundary, so that the flexible silica gel layer 3 is in full close contact with the aircraft wing structure, and the sealing effect is achieved.

An aluminum structural member is embedded in the inflatable airbag 2, so that the connection stability of the light base body 1 and the inflatable airbag 2 can be ensured.

The inflation interface 9 is in a quick joint connection form, and the pressure release valve 10 is in a manual pressure release valve structure form.

The bearing pressure value of the independent air bags 8 is 35Kpa, and each independent air bag 8 can realize the radial expansion and expansion of the inflatable layer 6 to 20-30cm during the inflation process.

In the utility model, when in use, the flexible auxiliary device is installed at the boundary area of the whole oil tank of the airplane wing, after the relief valve 10 of the inflatable airbag 2 is confirmed to be locked, the inflatable device and the inflatable interface 9 of the inflatable airbag 2 are connected, the independent airbag 8 is inflated, the laminating condition of the contact parts of the flexible silica gel layer 3 on the outer layer of the auxiliary device, the stringer of the wall plate of the airplane wing, the reinforcing ribs of the front beam and the rear beam, and the like is adjusted in the inflating process, so that the flexible silica gel layer 3 is closely laminated with the whole oil tank structure of the airplane wing; the pressure in the inflatable air bag 2 is monitored in real time through an inflation equipment pressure gauge in the inflation process, after the flexible silica gel layer 3 is tightly attached to the integral oil tank structure of the airplane wing, the inflatable air bag 2 of the device is continuously inflated, and the inflation is stopped after the pressure in the inflatable air bag 2 reaches 30 Kpa; and then, compressed air is filled into the integral oil tank of the airplane wing through the integral oil tank inflation device of the airplane wing, the pressure in the oil tank is kept to reach 6Kpa, whether leakage exists at the contact part of the auxiliary detection device and the structure of the oil tank of the airplane wing or not is checked, and for the found leakage point, the inflation air bag 2 at the corresponding position of the auxiliary device is adjusted to carry out contact fitting degree of the flexible silica gel layer 3 and the structure of the airplane wing, so that the sealing of the installation position of the auxiliary device is ensured.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The helium mass spectrum leak detection flexible paving assisting device for the airplane sealed oil tank comprises a light base body (1), an inflatable air bag (2) and a flexible silica gel layer (3), and is characterized in that the light base body (1) is designed in a rectangular smooth shape, a T-shaped groove (4) is formed in the periphery of the light base body (1), and a connecting point connected with an integral wing oil tank structure is arranged in the light base body (1);

the inflatable air bag (2) comprises a base body connecting portion (5) and an inflatable layer (6), the base body connecting portion (5) is of a T-shaped rubber structure matched with the T-shaped groove (4), the inflatable layer (6) comprises a bottom layer (7) and an independent air bag (8), the bottom layer (7) is of a solid rubber structure and is 10cm thick, the bottom layer (7) is made of 10 layers of rubber with different hardness, the bottom layer (7) is paved and attached to the outer side of the light base body (1) layer by layer from one side, the independent air bag (8) and the bottom layer (7) are manufactured in an integrated forming mode, and an inflatable connector (9) and a pressure release valve (10) are arranged on the outer wall of the independent air bag (8);

the thickness of the silica gel layer of the flexible silica gel layer (3) is 20cm, and the flexible silica gel layer (3) is fixed with the inflation layer (6) in a bonding mode.

2. The aircraft fuel tank helium mass spectrometer leak detection flexible paving device as defined in claim 1, characterized in that an aluminum structural member is embedded in the inflatable air bag (2).

3. The aircraft fuel tank helium mass spectrometer leak detection flexible paving device as defined in claim 1, wherein the inflation interface (9) is in a quick coupling connection form, and the pressure relief valve (10) is in a manual pressure relief valve structure form.

4. Helium mass spectrometer leak detection flexible paving device for aircraft fuel tanks according to claim 1, characterized in that the rigid connection of the gas-filled layer (6) to the lightweight matrix (1) is gradually cushioned to a soft rubber connection.

5. Aircraft fuel tank helium mass spectrometer leak detection flexible paving device according to claim 1, characterized in that the independent balloon (8) is subjected to a pressure value of 35 Kpa.