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One-way valve capable of buffering fluid shocks

A one-way valve and buffer fluid technology, applied in the valve's device for absorbing fluid energy, functional valve type, valve details, etc., can solve the problems of increasing the opening pressure of the one-way valve, complex structure, heavy weight, etc. The effect of disassembly, simple principle and mature process

Pending Publication Date: 2018-11-30
CHENGDU AIRCRAFT INDUSTRY GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

CN205350453U increases the opening pressure of the one-way valve by increasing the spring force, so as to overcome the deficiency of the fuel tank liquid column to open the one-way valve. Water hammer effect cannot be avoided when the shut-off valve is closed suddenly
And its structure is more complicated, the weight is heavier
CN105042124A can only be used for pipeline ends, not for fluid pipelines

Method used

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  • One-way valve capable of buffering fluid shocks
  • One-way valve capable of buffering fluid shocks
  • One-way valve capable of buffering fluid shocks

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A one-way valve 19 that can buffer fluid impact includes a valve seat 1 and an outer shell 7, the buffer seat mounting groove 13 inside the valve seat 1 is equipped with a buffer seat 2, and the connecting shaft hole 12 inside the valve seat 1 A connecting shaft 5 is installed at the place, and one end of the connecting shaft 5 is connected with the valve plate 6 through a pin 4, and a sealing ring 3 is sleeved in the sealing ring groove 10 on the valve seat 1, and the valve seat 1 and the outer shell 7 are connected to each other. connect. One end of the buffer seat 2 is embedded in the buffer seat mounting groove 13 of the valve seat 1, and the connection between the buffer seat 2 and the valve seat 1 is realized by vulcanization. Through the pin 4, the two connecting holes 16 of the connecting shaft 5 are connected to the pin holes 18 of the connecting head 17 of the valve plate 6, and then the connecting shaft 15 of the connecting shaft 5 and the connecting shaft ho...

Embodiment 2

[0031] A one-way valve 19 that can buffer fluid impact includes a valve seat 1 and an outer shell 7, the buffer seat mounting groove 13 inside the valve seat 1 is equipped with a buffer seat 2, and the connecting shaft hole 12 inside the valve seat 1 A connecting shaft 5 is installed at the place, and one end of the connecting shaft 5 is connected with the valve plate 6 through a pin 4, and a sealing ring 3 is sleeved in the sealing ring groove 10 on the valve seat 1, and the valve seat 1 and the outer shell 7 are connected to each other. connect.

[0032] The outer end of the valve seat 1 is provided with a first hexagonal wrench surface 11 and a first nozzle 8, and the two ends of the outer shell 7 are respectively provided with a second hexagonal wrench surface 21 and a second nozzle 22. Both the first hexagonal wrench surface 11 and the second hexagonal wrench surface 21 are provided with a plurality of safety holes 9 .

[0033] The buffer seat 2 is a hollow structure, an...

example 1

[0040] Example 1, assuming that the buffer seat 2 is not used in the one-way valve:

[0041] The fuel in the fuel system on the aircraft realizes flow control through the fuel pipeline system. The fuel enters the fuel pipeline 24 from the fuel inlet pipeline 23 through the one-way valve, and then enters the fuel outlet pipeline 25 through the shut-off valve, and is delivered to in the follow-up system. When the aircraft needs to stop the fuel delivery of this section of the control pipeline, the aircraft sends a shut-off valve closing command, the shut-off valve is quickly closed, and the fuel flowing in the fuel line 24 suddenly drops to 0 at the shut-off valve. At this time, the shut-off valve and A pressure is generated on the nearby pipe wall. Since the inner wall of the fuel pipe is smooth, the fuel fluid will continue to flow along the previous flow direction due to inertia, and the pressure will quickly reach the maximum. The increased pressure will exert a reverse driv...

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Abstract

The invention belongs to the technical field of aircraft fuel systems and particularly relates to a one-way valve capable of buffering fluid shocks. The one-way valve is used in a fuel pipeline of a fuel system to eliminate potential safety hazards brought by the fluid shocks. The one-way valve comprises a valve seat and an outer shell. A buffering seat is installed in a buffering seat installinggroove in the valve seat. A connecting shaft is installed at a connecting shaft hole inside the valve seat. One end of the connecting shaft is connected with a valve plate. A seal ring is arranged ina seal ring groove in the valve seat in a sleeved mode. The valve seat is connected with the outer shell. The one-way valve capable of buffering fluid shocks is similar to a prior one-way valve, simple in theory, mature in process, and easy to dismantle. The fluid shocks can be buffered just through the buffering seat made of hard rubber materials in pipelines with the water hammer effect, relatedaccessories and the fuel pipeline are protected, and the fluid shock buffering is achieved.

Description

technical field [0001] The application belongs to the technical field of aircraft fuel systems, and in particular relates to a one-way valve that can buffer fluid impacts and eliminate potential safety hazards caused by fluid impacts in the fuel pipelines of the fuel system. Background technique [0002] The fuel on the aircraft is delivered to the engine for consumption through the fuel pipeline. Usually, the flow of fuel in the pipeline is controlled by a fuel pump, a cut-off valve, and a one-way valve set on the pipeline. The fuel pump is used to provide fuel flow kinetic energy, the shut-off valve is used to control whether the fuel in the fuel pipeline is flowing or not, and the one-way valve is used to control the flow of fuel in the fuel pipeline. [0003] A section of fuel pipeline controlled by a fuel pump, shut-off valve, and one-way valve. The fuel in it is in a flowing state. When the shut-off valve is closed, a water hammer effect will occur. The water hammer e...

Claims

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Application Information

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IPC IPC(8): F16K15/03F16K27/02F16K47/02
CPCF16K15/03F16K27/0227F16K47/023
Inventor 练夏林金若姚小轶何敏程家林
Owner CHENGDU AIRCRAFT INDUSTRY GROUP
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