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Safety valve used for air refueling

A technology for aerial refueling and safety valve, applied in safety valve, valve details, balance valve and other directions, can solve the problem of inability to directly use safety valve

Active Publication Date: 2020-02-11
YIBIN SANJIANG MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the fuselage fuel tank of the air tanker is used to provide fuel refilling to other aircraft in the air, and the fuselage fuel tank of the air tanker is located in the cargo compartment of the tanker, so the safety valve of the existing fuel tank cannot be directly used

Method used

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  • Safety valve used for air refueling
  • Safety valve used for air refueling
  • Safety valve used for air refueling

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Embodiment Construction

[0035] figure 1 Schematic diagram of the structure of a safety valve for aerial refueling provided by an embodiment of the present invention Figure 1 , figure 2 Schematic diagram of the structure of a safety valve for aerial refueling provided by an embodiment of the present invention Figure II . like figure 1 and figure 2 As shown, the safety valve for air refueling includes: a housing 1, a cover 8, a piston assembly and a diaphragm 15; the piston assembly includes: a piston spring 4, a valve seat 5, a valve 11 and a piston 16; wherein,

[0036] One end of the casing 1 is connected to the atmosphere, the other end of the casing 1 is connected to one end of the cover 8, the other end of the cover 8 is connected to the fuel tank, and the casing 1 is also provided with a pressure-sensitive port 21 connected to the cargo compartment; A connected inner cavity is formed between 1 and cover 8; a spring groove is arranged on the inner wall of the housing 1, and a piston spri...

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Abstract

The invention provides a safety valve used for air refueling. A following type valve structure with a diaphragm is adopted, a piston spring is used for achieving pressure control, atmosphere and cargohold double negative pressure influences brought by flying height changing are balanced by adopting a part size matching manner, opening and closing of the safety valve are not affected by the doublenegative pressure, and sealing, wear-reduction and anti-vibration design is adopted at the valve moving position.

Description

technical field [0001] The invention relates to the technical field of precise fluid control, in particular to a safety valve for aerial refueling. Background technique [0002] Aircraft are equipped with safety valves, which are used to control the upper limit of the pressure value of the fuel tank, and are the core components to ensure the safety of the fuel tank. [0003] The safety valves on the current aircraft are all in the form of relative pressure direct-acting structure, which detects the fuel tank pressure and atmospheric pressure, and when the fuel tank pressure reaches its opening pressure, it exhausts or discharges oil outside the aircraft to realize pressure relief. [0004] However, the fuselage fuel tank of the air tanker is used to provide fuel filling to other aircraft in the air, and the fuselage fuel tank of the air tanker is located in the cargo compartment of the tanker, so the safety valve of the existing fuel tank cannot be directly adopted. Conten...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K17/04F16K17/164F16K31/126B01D35/04B64D35/00
CPCF16K17/04F16K17/164F16K31/1262B01D35/04B64D35/00
Inventor 单文涛施华杨星
Owner YIBIN SANJIANG MACHINERY
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