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Fuel double casing frame-passing joint

A double-layer casing and fuel oil technology, applied in the direction of pipe components, weight reduction, etc., can solve the problems of not having ventilation function and leakage function

Active Publication Date: 2021-12-07
COMAC +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] However, the split-type over-frame double-layer joint of the aforementioned Chinese utility model patent CN 201934840 U also does not have ventilation and leakage functions.

Method used

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  • Fuel double casing frame-passing joint
  • Fuel double casing frame-passing joint
  • Fuel double casing frame-passing joint

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Embodiment Construction

[0052] Hereinafter, referring to Figure 1 to 3 Fuel preferred embodiment of the double of the present invention through the block connector sleeve 100 will be described, wherein, figure 1 Is a schematic perspective view of fuel through the double tube frame showing the entire structure of joint 100, which also shows adapter 200 (not shown) for external piping connected, figure 2 Yes figure 1 Fuel double tube shown in a schematic cross-sectional view through the frame joint 100 sets, image 3 Mean figure 1 Double fuel pipe 100 shown in a schematic sectional view of a frame joint connecting the inner tank forms the body through the sleeve.

[0053] like figure 1 , figure 2 , The preferred embodiment of the fuel double sleeve of the present invention through the connector block 100 is connected to the tank through the double tube frame and body, as a whole, for example, L-shaped elbow joint, and its fuel for internal circulation, for example, having a L-shaped conduit 110 in the cente...

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Abstract

The utility model discloses a fuel double casing frame-passing joint. Through the joint, a necessary frame-passing function between a fuel tank and a double casing in a fuselage can be achieved, and ventilation and leakage discharge functions in the fuel double casing frame-passing joint can be achieved. The double casing with an interlayer between an inner layer and an outer layer is connected to the fuel tank in the fuselage in a frame-passing mode through a frame-passing mounting surface by the fuel double casing frame-passing joint, and a center pipeline for fuel to flow is arranged in the fuel double casing frame-passing joint; a first sleeve connected with the double casing is arranged at one end of the center pipeline; a second sleeve connected to the fuel tank in the fuselage is arranged at the other end of the center pipeline, anda ventilation and leakage flow path used for purging gas and leaked fuel accumulated in the interlayer to circulate is formed in the outer wall of the fuel double casing frame-passing joint; and a double casing ventilation and leakage discharge hole and / or a fuel tank ventilation and leakage hole are / is formed. The purging gas is used for purging the leaked fuel accumulated in the interlayer through the double casing ventilation leakage hole and / or the fuel tank ventilation and leakage hole, and therefore the leaked fuel is discharged to outside.

Description

Technical field [0001] The present invention relates to a fuel double layer sleeve passage that will be connected to a bilateral sleeve as a supply line. Background technique [0002] The oil supply line in the civilian aircraft body generally uses a double sleeve with inner tube and outer tube. When the inner tube of the double sleeve occurs, the oil and oil gases leak from the inner tube are directly flowing. To the outer tube, and through the drain of the leakage tube to prevent fuel and oil and gas from entering the body area. [0003] In addition, in order to avoid fuel tank leakage in the body, the surrounding oil or oil gas accumulation is caused. [0004] The typical structure of the fuel tank in the fuselage is also a bilateral ventilation leak-flare fuel tank, and the active ventilation system is provided in the fuel tank for realizing the flow of air around the fuel tank in the body, and will purge the oil Or oil and gas are exhausted by the exhaust rod. [0005] A lar...

Claims

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Application Information

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IPC IPC(8): F16L39/00
CPCF16L39/00Y02T50/40
Inventor 张锦刘德刚李南安管天麟姚莉君
Owner COMAC
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