Non-adhesive smooth wall surface boundary subdivision device and method

Abstract

The invention discloses a subdivision device and method for a non-adhesive smooth wall surface boundary. Comprising a partition plate supporting seat (1), the partition plate supporting seat (1) is in sliding connection with an airtight partition plate (2) in the vertical direction, an airtight clamping groove (8) is formed in the outer edge of the airtight partition plate (2), an airtight belt (3) is arranged in the airtight clamping groove (8), and the outline of the outer edge of the top of the airtight partition plate (2) is parallel to the outline of a subdivision interface (7). According to the invention, the problems of cabin loading uniformity and structural rigidity are solved.

Description

Technical Field

[0001] The invention belongs to the technical field of airtightness test of aircraft cabins, and in particular relates to a cabin subdivision device and method with a non-bonded smooth wall boundary. Background Art

[0002] For manned aircraft, the aerodynamic loads on the canopy during flight and the pressurization loads in the cabin act together on the transparent parts of the canopy, resulting in an obvious zoning effect in its pressure distribution. When conducting ground tests, it is necessary to fully simulate the pressure distribution on the canopy surface. At the same time, no additional rigid support structure can be added, because this will cause changes in the force transmission path of the canopy and lead to erroneous test results. Whether the compartment division method is appropriate directly determines whether the loads in each area of ​​the cabin can match the actual flight conditions. Therefore, it is of great significance to adopt an appropriate compartment division method. However, the following problems currently exist:

[0003] Traditional methods of compartment loading usually include: 1. Use adhesive tape to stick the loading area and then load the compartment; 2. Use inflation to load the compartment after fixing the compartment structure. For the first method, it adopts the idea of ​​equivalent load, which has a destructive effect on the surface of the cabin and also has the problem of low loading uniformity; for the second method, in order to ensure the airtightness on the compartment interface, it requires a large amount of sealing filler and additional support structure, which destroys the structural stiffness of the cabin itself and affects the load transfer path.

[0004] In summary, the traditional partition loading method has the problems of low compartment loading uniformity and additional structural stiffness, which will have a great impact on the hatch cover fatigue test with a long test time. Summary of the invention

[0005] The purpose of the present invention is to provide a non-bonded smooth wall boundary compartment device and method. The present invention solves the problems of compartment loading uniformity and structural rigidity.

[0006] The technical solution of the present invention is: a compartment division device with a non-adhesive smooth wall boundary, including a partition support seat, the partition support seat is vertically slidably connected to the airtight partition, an airtight groove is provided along the outer edge of the airtight partition, an airtight belt is provided in the airtight groove, and the outer edge contour of the top of the airtight partition is parallel to the compartment interface contour.

[0007] In the aforementioned non-bonded smooth wall boundary compartment device, a compartment sealing block A and a compartment sealing block B are provided below the airtight bulkhead, the top contours of the compartment sealing blocks A and B are parallel to the outer edge contours of the bottom of the airtight bulkhead, and the side contours of the compartment sealing blocks A and B are in contact with the corresponding positions on the inner surface of the canopy.

[0008] In the aforementioned non-bonded smooth wall boundary compartment device, a telescopic support driving mechanism is provided between the two compartment sealing blocks.

[0009] In the aforementioned non-bonded smooth wall boundary compartment device, in the sealed state, the distance between the top outer edge contour of the airtight partition and the compartment interface contour is 10 mm.

[0010] In the aforementioned non-bonded smooth wall boundary compartment device, the airtight belt is in the shape of a mountain as a whole, the arms on both sides of the mountain shape are rigid arms, and the middle arm can extend outwards in the inflated state.

[0011] In the aforementioned non-bonded smooth wall boundary compartment device, the inflation pressure of the airtight belt is greater than 5 times the maximum pressure difference at the compartment during the test.

[0012] In the aforementioned non-bonded smooth wall boundary compartment device, the radius of each turning point of the outer edge contour of the airtight partition is greater than 70 mm.

[0013] A method for sealing compartment division of the compartment division device as described above comprises the following steps:

[0014] The first step is to wrap the airtight tape into the airtight groove of the outer edge contour of the airtight partition, so that the working surface of the airtight tape is at the same height as the outer edge of the airtight groove;

[0015] The second step is to open the canopy installed on the test bench platform, install a partition support seat at the interface between the front and rear cabins on the test bench platform, and seal the partition support seat with the test bench platform; slide the airtight partition onto the partition support seat, and slide the airtight partition down to a position that does not affect the opening and closing of the canopy;

[0016] Step 3: Close the canopy and slide the airtight partition upwards to a position 10 mm from the inner surface of the canopy, i.e. 10 mm from the contour of the compartment interface.

[0017] Step 4: Install compartment sealing block A and compartment sealing block B under the airtight bulkhead, paste 5mm thick vacuum putty and polytetrafluoroethylene film between the contact surfaces of compartment sealing blocks A and B and the inner surface of the canopy, and tighten them to both sides with a telescopic support drive mechanism;

[0018] The fifth step is to close the operating door, inflate the airtight belt, and complete the installation of the front and rear compartment tooling.

[0019] The sixth step is to adjust the stamping pressure of the airtight belt so that the pressure on the inner surface of the canopy is the lowest while meeting the pressure difference requirements between the front and rear cabins, and start the front and rear cabin compartment loading test.

[0020] The advantages of the present invention are: using the present invention to perform compartment division can effectively fit the smooth boundary, and when the compartment surface is deformed, the flexible pressurized airtight belt can also follow the deformation to fit, thereby ensuring the effectiveness of the compartment division. At the same time, the method does not introduce additional rigid support, and can ensure that the support rigidity of the cabin structure does not change during the pressure loading process, and can effectively simulate the influence of the actual load on the cabin structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure of the present invention;

[0022] Figure 2 for Figure 1 Main view;

[0023] Figure 3 It is a schematic diagram of the outline position of the airtight bulkhead and the compartment interface;

[0024] Figure 4 Schematic diagram of the cross section of the airtight belt. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0026] The features and illustrative embodiments of various aspects of the present invention will be described in detail below. In the detailed description below, many specific details are proposed to provide a comprehensive understanding of the present invention. However, it is obvious to those skilled in the art that the present invention can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the present invention by illustrating examples of the present invention. The present invention is by no means limited to any specific settings and methods proposed below, but covers any improvements, replacements and modifications of structures, methods, devices without departing from the spirit of the present invention. In the accompanying drawings and the following description, known structures and technologies are not shown to avoid unnecessary ambiguity in the present invention.

[0027] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other, and the embodiments can refer to and quote each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0028] Example 1. A compartment device with a non-bonded smooth wall boundary, such as Figure 1-Figure 4As shown, it includes a partition support seat 1, which is vertically slidably connected to the airtight partition 2, an airtight groove 8 is provided along the outer edge of the airtight partition 2, an airtight belt 3 is provided in the airtight groove 8, and the top outer edge contour of the airtight partition 2 is parallel to the compartment interface contour 7.

[0029] A compartment sealing block A4 and a compartment sealing block B5 are provided below the aforementioned airtight bulkhead 2. The top contours of the compartment sealing blocks A and B are parallel to the bottom outer edge contour of the airtight bulkhead 2, and the side contours of the compartment sealing blocks A and B are in contact with the corresponding positions on the inner surface of the canopy.

[0030] A telescopic support driving mechanism 6 is provided between the two compartment sealing blocks.

[0031] In the sealed state, the distance between the top outer edge contour of the airtight partition 2 and the compartment interface contour 7 is 10 mm. The distance between the compartment partition and the compartment interface contour 7 + the maximum displacement of the compartment interface during loading is less than the maximum working protrusion height of the airtight belt to ensure full sealing.

[0032] The aforementioned airtight belt 3 is in the shape of a mountain as a whole, and the two side arms of the mountain shape are rigid arms, and the middle arm can be extended outward in the inflated state. This structure can ensure that the extension direction of the airtight belt 3 is always toward the cabin interface contour 7, and prevent the airtight belt from being subjected to uneven force when in contact with the cabin interface due to the excessive extension cross section, thereby affecting the sealing effect.

[0033] The inflation pressure of the aforementioned airtight belt 3 is greater than 5 times the maximum pressure difference at the compartment during the test.

[0034] The radius of each turning point of the outer edge contour of the aforementioned airtight partition plate 2 is greater than 70 mm. This structure can ensure that the deformation curvature of the airtight belt is not too large, thereby avoiding stress concentration and affecting the sealing reliability.

[0035] The sealing subdivision method of the above-mentioned subdivision device comprises the following steps:

[0036] The first step is to wrap the airtight tape 3 into the airtight slot 8 on the outer edge of the airtight partition 2, so that the working surface of the airtight tape 3 is at the same height as the outer edge of the airtight slot 8;

[0037] The second step is to open the canopy installed on the test bench platform, install the partition support seat 1 at the interface between the front and rear cabins on the test bench platform, and seal the partition support seat 1 with the test bench platform; slide the airtight partition 2 onto the partition support seat 1, and slide the airtight partition 2 down to a position that does not affect the opening and closing of the canopy;

[0038] Step 3: Close the canopy in place, slide the airtight partition 2 upwards to a position 10 mm from the inner surface of the canopy, that is, 10 mm from the compartment interface contour 7;

[0039] Step 4: Install compartment sealing block A4 and compartment sealing block B5 under the airtight bulkhead 2, paste 5mm thick vacuum putty and polytetrafluoroethylene film between the contact surfaces of compartment sealing blocks A and B and the inner surface of the canopy, and tighten them to both sides with the telescopic support driving mechanism 6;

[0040] The fifth step is to close the operating door, inflate the airtight belt 3, and complete the installation of the front and rear compartment tooling.

[0041] The sixth step is to adjust the stamping pressure of the airtight belt 3 so that the pressure on the inner surface of the canopy is the lowest while meeting the pressure difference requirement between the front and rear cabins, and start the front and rear cabin compartment loading test.

Claims

1. A compartment device with a non-bonded smooth wall boundary, characterized in that: The utility model comprises a partition support seat (1), the partition support seat (1) is connected to the airtight partition (2) in a vertical sliding manner, an airtight groove (8) is provided along the outer edge of the airtight partition (2), an airtight belt (3) is provided in the airtight groove (8), and the outer edge contour of the top of the airtight partition (2) is parallel to the compartment interface contour (7).

2. The non-bonded smooth wall boundary compartment device according to claim 1, characterized in that: A compartment sealing block A (4) and a compartment sealing block B (5) are provided below the airtight bulkhead (2); the top contours of the compartment sealing blocks A and B are parallel to the outer edge contour of the bottom of the airtight bulkhead (2); and the side contours of the compartment sealing blocks A and B are in contact with corresponding positions on the inner surface of the canopy.

3. The non-bonded smooth wall boundary compartment device according to claim 2, characterized in that: A telescopic support driving mechanism (6) is provided between the two compartment sealing blocks.

4. The non-bonded smooth wall boundary compartment device according to claim 1, characterized in that: In the sealed state, the distance between the top outer edge contour of the airtight partition (2) and the compartment interface contour (7) is 10 mm.

5. The compartment subdivision device with non-bonded smooth wall boundary according to claim 1, characterized in that: The airtight belt (3) is in the shape of a mountain as a whole, the arms on both sides of the mountain shape are rigid arms, and the middle arm can extend outwards in the inflated state.

6. The non-bonded smooth wall boundary compartment device according to claim 1, characterized in that: The inflation pressure of the airtight belt (3) is greater than 5 times the maximum pressure difference at the compartment during the test.

7. The non-bonded smooth wall boundary compartment device according to claim 1, characterized in that: The radius of each turning point of the outer edge contour of the airtight partition (2) is greater than 70 mm.

8. A method for sealing compartment subdivision of a compartment subdivision device according to any one of claims 1 to 7, characterized in that: The steps include: The first step is to wrap the airtight tape (3) into the airtight groove (8) of the outer edge contour of the airtight partition (2), so that the working surface of the airtight tape (3) is at the same height as the outer edge of the airtight groove (8); The second step is to open the cockpit cover installed on the test bench platform, install a partition support seat (1) at the interface between the front and rear cabins on the test bench platform, and perform sealing treatment between the partition support seat (1) and the test bench platform; Slidingly connect the airtight partition (2) to the partition support seat (1), and slide the airtight partition (2) down to a position that does not affect the opening and closing of the cockpit cover; Step 3: Close the canopy and slide the airtight partition (2) upwards to a position 10 mm from the inner surface of the canopy, i.e., 10 mm from the cabin interface contour (7); Step 4: Install compartment sealing block A (4) and compartment sealing block B (5) below the airtight bulkhead (2), adhere 5 mm thick vacuum putty and polytetrafluoroethylene film between the contact surfaces of compartment sealing blocks A and B and the inner surface of the canopy, and tighten them to both sides with a telescopic support driving mechanism (6); The fifth step is to close the operating door, inflate the airtight belt (3), and complete the installation of the front and rear compartment tooling. The sixth step is to adjust the stamping pressure of the airtight tape (3) so that the pressure on the inner surface of the canopy is the lowest while satisfying the pressure difference requirement between the front and rear cabins, and start the front and rear cabin compartment loading test.

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