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Seal fuel tank valve

A fuel tank and valve technology, applied in packaging, large containers, containers, etc., can solve problems such as leakage, not well solved, fuel tank deformation, etc., to avoid potential safety hazards, reduce pressure, and improve safety.

Active Publication Date: 2019-01-11
YAPP AUTOMOTIVE PARTS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The exhaust valve cannot be re-opened in time to exhaust: the exhaust valve needs to wait for the internal pressure of the fuel tank to drop to a certain level, that is, when the gravity of the float can overcome the spring force and the internal pressure of the fuel tank, that is, the internal pressure X the area of ​​the vent hole, the float can be opened; G>F x +P*S, where G: float weight, F x : spring force, P: internal pressure of fuel tank, S: exhaust hole area; it can be seen from this that due to the large S, the exhaust valve can only be reopened when P drops a lot, and the exhaust valve cannot be reopened in time to exhaust, and the fuel tank cannot Release the pressure in time to cause safety problems such as deformation and leakage of the fuel tank
For this problem, those skilled in the art are constantly trying, but this problem has not been well resolved

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] Embodiment 1: see figure 1 , a high-efficiency multifunctional sealed fuel tank valve, the fuel tank valve includes a flange assembly, an inner shell 1 and a bottom shell 2, the inner shell 1 is provided with a sealing assembly and a spring 3, and the inner shell is set on the bottom On the shell, the flange assembly is arranged on the bottom shell 2, the flange assembly includes a welding flange 4 and a sealing ring 5, the flange assembly is welded on the bottom shell 2, and the inner shell is provided with row The air hole 8, the sealing assembly includes a gasket 6 and a float 7, the gasket 6 is assembled on the float 7, see figure 1 , Picture 1-1 , the sealing pad 6 is arranged as a rectangle, and the sealing pad contains a certain movable margin 9, and the movable margin on the sealing pad is two rectangular small holes 9 or square small holes 9. In this technical solution, the gasket has a certain activity margin relative to the float, and the float itself is n...

Embodiment 2

[0050] Example 2: see Figure 6 , Figure 12 , a high-efficiency multifunctional sealed fuel tank valve, the fuel tank valve includes a flange assembly, an inner shell and a bottom shell, a sealing assembly and a spring are arranged in the inner shell, the inner shell is arranged on the bottom shell, and the method The blue component is arranged on the bottom case. The flange assembly includes a welding flange 4 and a sealing ring 5, the flange assembly 4 is welded on the bottom shell 2, the inner shell 1 is provided with an exhaust hole 8, and the sealing assembly includes a sealing gasket 6, Float 7 and gasket fixing card 10, the gasket 6 is fixed on the float 7 through the gasket fixing card 10, see Figure 6 , Figure 9 , Figure 10 , Figure 12 , the sealing gasket 6 is provided with a small hole 9 , and the diameter S1 of the small hole 9 is smaller than the diameter S2 of the exhaust hole 8 . Because the gasket hole S1 is smaller than the valve vent hole S2, it do...

Embodiment 3

[0052] Embodiment 3: see Figure 13 , Figure 17 , a high-efficiency multifunctional sealed fuel tank valve, the fuel tank valve includes a flange assembly, an inner shell 1 and a bottom shell 2, the inner shell 1 is provided with a sealing assembly and a spring 3, and the inner shell is arranged on the bottom shell 2 Above, the flange assembly is arranged on the bottom shell 2, the flange assembly includes a welding flange and a sealing ring 5, the welding flange is welded on the bottom shell 2, and the inner shell 1 is provided with an exhaust hole 8, the sealing assembly includes a gasket 6, a float 7 and a gasket limiter 311, the gasket 6 is arranged between the float 7 and the gasket limiter 311, and the gasket limiter is covered on the gasket 6 above, the gasket limit card 311 is welded on the float 7, see Figure 13 , Figure 17, as an improvement of the present invention, the sealing pad is provided with a small hole 9, the diameter of the small hole 9 is smaller th...

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Abstract

The invention relates to an efficient multi-purpose sealing fuel tank valve which is characterized by comprising a flange assembly, an inner shell and a bottom shell, wherein the inner shell is internally provided with a sealing assembly and a spring, the inner shell is arranged on the bottom shell, the flange assembly is arranged on the upper surface of the bottom shell, and comprises a welding flange and a seal ring, the flange assembly is welded on the bottom shell, and an air vent hole is formed in the inner shell. With the technical scheme, a novel exhaust valve is provided, while the sealing property is guaranteed, the exhaust valve can be restarted under very high pressure, and therefore, the potential safety hazards are avoided.

Description

technical field [0001] The invention relates to a valve, in particular to a high-efficiency multifunctional sealed fuel tank valve, which belongs to the technical field of fuel tank structural components. Background technique [0002] Automotive plastic fuel tanks carry gasoline or diesel. When the ambient temperature rises or the fuel shakes violently while the car is running, the pressure inside the fuel tank will rise. The high pressure inside the fuel tank will cause safety hazards, and it needs to be exhausted as soon as possible. The valve releases the pressure to the outside; in addition, when the fuel shakes and slaps the exhaust valve, causing the exhaust valve to close unexpectedly, the exhaust valve needs to be opened as soon as possible to maintain the ventilation state. During the refueling process, the exhaust valve can limit the filling liquid level to achieve a certain filling volume purpose. During the refueling process, fuel expansion, car tilting, rollover...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60K15/035
Inventor 孙岩姜林刘亮朱志勇苏卫东翁益明朱海洋梁新龙姜涛
Owner YAPP AUTOMOTIVE PARTS