Testing device for verifying instantaneous damage safety of passenger cabin glass

Abstract

The utility model discloses a test device for verifying instant damage safety of passenger cabin glass, which relates to the field of aircraft passenger cabin glass and comprises a first booster cavity, a second booster cavity and damage control equipment, a test piece mounting port is arranged on one side of the first booster cavity and is communicated with the second booster cavity, and the second booster cavity is communicated with the damage control equipment. The test piece mounting port is hermetically connected with a passenger cabin glass test piece; a through hole is formed in the side, away from the first pressurizing cavity, of the second pressurizing cavity and connected with tempered glass in a sealed mode. A plurality of first cavity function holes are formed in the periphery of the first pressurization cavity, a plurality of second cavity function holes are formed in the periphery of the second pressurization cavity, pressurization and / or pressure relief and / or pressure monitoring in the corresponding cavities are / is achieved, and the damage control equipment is located on the outer side of the tempered glass and crushes the tempered glass. The effects of simulating the instantaneous damage working condition of the passenger cabin glass and verifying the residual strength safety of the passenger cabin glass on the premise of considering the operation safety are achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of aircraft passenger cabin glass, especially relates to a test device for verifying the safety of passenger cabin glass instantaneous damage. BACKGROUND

[0002] In the field of aviation, the safety of passengers cannot be ignored, and the safety of passenger cabin glass, as an important protective and visual assurance component in the passenger cabin, is particularly important. Aircraft passenger cabin glass mainly withstands aerodynamic pressure, temperature changes and other conventional factors during flight. In some cases, the structure layer of the passenger cabin glass may be damaged instantaneously, and if the structure layer close to the passenger cannot withstand the impact force generated after instantaneous damage, it may cause harm to the passenger. Therefore, aircraft passenger cabin glass usually has a damage safety design requirement, that is, when the structure layer suddenly breaks, the remaining structure of the passenger cabin glass should be sufficient to support the pressure load in the cabin without bursting, falling off and other safety problems.

[0003] Therefore, during the design process of the passenger cabin glass, the safety of the structure of the passenger cabin glass after instantaneous damage needs to be verified through testing. Since the passenger cabin glass is usually made of organic glass, which has the characteristic of non-fragmentation, that is, it is not easy to break into fragments after damage, therefore, when using traditional damage safety test devices to carry out damage safety tests, it is not possible to simulate the instantaneous failure mode of the structure layer while ensuring the safety of the test personnel, therefore, there is an urgent need for a new test device to verify the safety of the passenger cabin glass under instantaneous damage. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a test device for verifying the safety of passenger cabin glass instantaneous damage, which can simulate the working condition of passenger cabin glass instantaneous damage while ensuring the safety of operation, and verify the safety of the remaining strength.

[0005] The above technical purpose of the utility model is realized by the following technical scheme:

[0006] A test device for verifying the safety of passenger cabin glass instantaneous damage, comprising a first pressure chamber, a second pressure chamber and a damage control device, the first pressure chamber is provided with a test piece mounting port on one side, the test piece mounting port is communicated with the second pressure chamber, and the passenger cabin glass test piece is sealingly connected at the test piece mounting port; the second pressure chamber is provided with a through hole away from the first pressure chamber on one side and sealingly connected with the tempered glass; a plurality of first cavity function holes are arranged on the periphery of the first pressure chamber, and a plurality of second cavity function holes are arranged on the periphery of the second pressure chamber, which realize pressure increase and / or pressure relief and / or pressure monitoring in the corresponding cavities respectively, and the damage control device is located outside the tempered glass and breaks the tempered glass.

[0007] Further, the breakage control device comprises a cylinder, and the output end of the cylinder is aligned with the tempered glass.

[0008] Further, the output end of the cylinder is provided with a sharp impact head.

[0009] Further, the breakage control device is mounted on a support, and the support is connected to the outside of the second plenum.

[0010] Further, the first plenum comprises an opening away from one end of the first plenum and a bottom plate at the position of the opening, and the inner side of the bottom plate is sealingly connected to the first plenum.

[0011] Further, the cabin glass test piece is connected to the test piece mounting port through fasteners.

[0012] Further, the test piece mounting port is sealingly connected to the cabin glass test piece through the body of the cabin glass test piece, or a sealant layer is arranged between the test piece mounting port and the cabin glass test piece.

[0013] Further, the second plenum comprises an opening away from one end of the first plenum and a cover plate connected at the position of the opening, and the inner side of the cover plate is sealingly connected to the second plenum, and the cover plate is provided with a through hole and sealingly connected to the tempered glass.

[0014] In summary, the utility model has the following beneficial effects:

[0015] The first plenum, the second plenum and the breakage control device are arranged, the test piece mounting port is arranged on one side of the first plenum to connect the cabin glass test piece, the second plenum is connected to the tempered glass and the breakage control device, the corresponding plenum is internally pressurized, or depressurized, or pressure monitored through the first cavity function hole and the second cavity function hole, the breakage control device is located outside the tempered glass and breaks the tempered glass, the internal pressure of the second plenum is instantaneously released, the pressure of the first plenum is maintained unchanged, the impact on the remaining structure of the cabin glass test piece at the moment of breakage is simulated, and therefore the working condition of the instant breakage of the cabin glass is simulated under the premise of ensuring the operation safety, and the safety of the remaining strength is verified. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a structural schematic view of a test device for verifying the instant breakage safety of a cabin glass.

[0017] In the drawing, 1 is a first plenum, 1-1 is a first cavity function hole, 1-2 is a test piece mounting port, 2 is a second plenum, 2-1 is a second cavity function hole, 3 is a bottom plate, 4 is a cover plate, 5 is a tempered glass, 6 is a support, 7 is a cylinder, 8 is a control circuit, and 9 is a cabin glass test piece. DETAILED DESCRIPTION

[0018] The utility model discloses make further explanation to the specific implementation of the utility model below combining the drawing, and this embodiment does not constitute the limitation to the utility model. Based on the embodiment in this application, all other embodiments obtained by the ordinary skill in the art without making creative labor belong to the protection scope of this application.

[0019] A kind of test device for verifying cabin glass instantaneous breakage safety, as shown in Figure Figure 1 It includes first plenum 1, second plenum 2 and breakage control equipment, first plenum 1 includes the test piece installation port 1-2 opened in one side and the opening in the other side, test piece installation port 1-2 is communicated with second plenum 2, test piece installation port 1-2 is sealedly connected cabin glass test piece 9, the opening position of first plenum 1 is connected bottom plate 3, and bottom plate 3 is sealedly connected in plenum;Second plenum 2 is distantly located from the side of first plenum 1 and is provided with through hole and is sealedly connected tempered glass 5;

[0020] Wherein, cabin glass test piece 9 can be connected to test piece installation port 1-2 by fastener etc., fastener can be screw etc. structure, the sealing performance between cabin glass test piece 9 and test piece installation port 1-2 is realized by cabin glass test piece 9 ontology or by sealing agent;Similarly, bottom plate 3 can also be locked in the bottom opening position of first plenum 1 by screw etc. fastener, to realize the sealing of first plenum 1;In this embodiment, the press plate is placed from the position of bottom plate 3 inward, the press plate is fixedly connected with the end plate of first plenum 1 and second plenum 2, and the both sides of cabin glass test piece 9 are fixed by the press plate and the end plate of first plenum 1, finally, bottom plate 3 is installed;

[0021] Second plenum 2 includes the opening of the one end distantly located from first plenum 1 and the cover plate 4 connected at the opening position, the inner side of cover plate 4 is sealedly connected to second plenum 2 by screw etc. fastener, cover plate 4 is provided with through hole and is sealedly connected tempered glass 5 by sealing agent bonding etc., so that second plenum 2 is sealedly assembled with first plenum 1, forms the external plenum of cabin glass test piece 9, and realizes the air tightness of external plenum.

[0022] As shown in Figure Figure 1 First plenum 1 is provided with a plurality of first cavity function holes 1-1 around, and second plenum 2 is provided with a plurality of second cavity function holes 2-1 around, to realize the pressurization, pressure relief, pressure monitoring in the corresponding cavity,

[0023] Breakage control equipment is located outside tempered glass 5 and breaks tempered glass 5;Specifically, breakage control equipment includes cylinder 7, and the output end of cylinder 7 is against tempered glass 5, and the output end of cylinder 7 can be connected with drill bit etc. sharp impact head.

[0024] In this embodiment, the breakage control device is installed on the bracket 6, which is connected to the second plenum 2 through welding or fastener assembly, etc. The breakage control device can be detachably connected to the bracket 6 through screws, so as to adjust the distance between the cylinder 7 and the tempered glass 5. The cylinder 7 is connected to the control circuit 8 and the control system through the control circuit 8, so as to control the instantaneous impact of the drill bit or other sharp metal in the cylinder 7 on the tempered glass 5 and break the tempered glass 5. The control circuit 8 can be appropriately lengthened to ensure the safety of the operator.

[0025] The instantaneous breakage of the tempered glass 5 can realize the instantaneous pressure relief of the second plenum 2, so as to pre-break the structure layer of the cabin glass test piece 9. Through this way, the instantaneous pressure relief simulation realizes the impact force of the first plenum 1 on the cabin glass test piece 9 when the cabin glass test piece 9 breaks instantaneously, so as to realize the purpose of the cabin glass instantaneous breakage safety test.

[0026] The embodiment also discloses a test method for verifying the instantaneous breakage safety of the cabin glass, which comprises the following steps.

[0027] Step S1, processing the cabin glass test piece 9, including pre-breaking the structure layer of the cabin glass test piece 9 and keeping the structure to be examined intact, and then installing the cabin glass test piece 9 in the test piece mounting port 1-2 of the first plenum 1 according to the actual installation requirements.

[0028] Step S2, gradually pressurizing the first plenum 1 and the second plenum 2, so that the internal pressure of the first plenum 1 and the second plenum 2 reaches P1=△Pt+△Pa, wherein △Pt is the maximum setting value of the aircraft pressure relief valve, and△Pa is the aerodynamic negative pressure of the aircraft cabin. The pressure tolerance needs to be taken as a positive value to ensure the examination.

[0029] Step S3, controlling the breakage control device to break the tempered glass 5, realizing the instantaneous leakage of the internal pressure of the second plenum 2, and maintaining the pressure of the first plenum 1 unchanged, so as to simulate the impact of the remaining structure of the cabin glass test piece 9 at the moment of breakage, and realize the instantaneous breakage safety test examination.

[0030] Step S4, compensating the pressure in the first plenum 1, so that the internal pressure of the first plenum 1 reaches P2=n×(△Pt+△Pa), and starting pressure maintaining. The pressure maintaining time is determined according to the flight time of the verified product. Wherein n is a load amplification coefficient, which is determined according to the material of the windshield glass. The commonly used amplification coefficients include:

[0031] For inorganic glass, the load amplification coefficient is 2.0; for tensile organic glass material, the load amplification coefficient is 2.0; for cast organic glass material, the load amplification coefficient is 4.0; and for polycarbonate material, the load amplification coefficient is 4.0.

[0032] Step S5, the pressure inside the first plenum 1 is monitored, and after the test, the test piece state and the pressure maintenance are analyzed and confirmed, and whether the test result meets the requirements is determined.

[0033] The above is only a preferred embodiment of the present application, and is not used to limit the present application. Those skilled in the art can make various modifications or equivalent replacements to the present application within the spirit and protection scope of the present application, and such modifications or equivalent replacements should also be considered to fall within the protection scope of the technical scheme of the present application.

Claims

1. A test device for verifying the safety of instantaneous breakage of cabin glass, characterized in that: The device includes a first pressurization chamber (1), a second pressurization chamber (2), and a breakage control device. The first pressurization chamber (1) has a test piece installation port (1-2) on one side, which is connected to the second pressurization chamber (2). The test piece installation port (1-2) is sealed and connected to the cabin glass test piece (9). The second pressurization chamber (2) has a through hole on the side away from the first pressurization chamber (1) and is sealed and connected to the tempered glass (5). The first pressurization chamber (1) has several first chamber function holes (1-1) on its outer periphery, and the second pressurization chamber (2) has several second chamber function holes (2-1) on its outer periphery, which respectively realize pressurization and / or depressurization and / or pressure monitoring inside the corresponding chamber. The breakage control device is located outside the tempered glass (5) and breaks the tempered glass (5).

2. The test device for verifying the safety of instantaneous breakage of cabin glass according to claim 1, characterized in that: The breakage control device includes a cylinder (7), the output end of which is aligned with the tempered glass (5).

3. The test device for verifying the safety of instantaneous breakage of cabin glass according to claim 2, characterized in that: The output end of the cylinder (7) is provided with a sharp impact head.

4. A test device for verifying the safety of instantaneous breakage of cabin glass according to claim 1 or 2, characterized in that: The damage control device is installed on the bracket (6), which is connected to the outside of the second pressurization chamber (2).

5. The test device for verifying the safety of instantaneous breakage of cabin glass according to claim 1, characterized in that: The first pressurizing chamber (1) includes an opening at one end away from the first pressurizing chamber (1) and a bottom plate (3) at the opening position. The inner side of the bottom plate (3) is sealed to the first pressurizing chamber (1).

6. The test device for verifying the safety of instantaneous breakage of cabin glass according to claim 1, characterized in that: The cabin glass test piece (9) is connected to the test piece mounting port (1-2) by fasteners.

7. The test apparatus for verifying the safety of instantaneous breakage of cabin glass according to claim 6, characterized in that: The test piece installation port (1-2) is sealed by the cabin glass test piece (9) body, or by setting a sealant layer between the two.

8. A test apparatus for verifying the safety of instantaneous breakage of cabin glass according to claim 1 or 5, characterized in that: The second pressurizing chamber (2) includes an opening at one end away from the first pressurizing chamber (1) and a cover plate (4) connected to the opening. The inner side of the cover plate (4) is sealed to the second pressurizing chamber (2). A through hole is opened on the cover plate (4) and a tempered glass (5) is sealed to it.

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