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Extraction valve

A technology of pumping valves and gas, applied in the direction of valve lifts, valve details, valve devices, etc., can solve the problems of shortened life, high noise, discontinuous pumping flow, etc., and achieve simple and safe functional effects

Inactive Publication Date: 2017-02-15
NISSAN MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this leads to jumping of the suction piston, which on the one hand produces a very discontinuous suction flow and, on the other hand, high noise
Furthermore, the runout causes enormous wear on the inner side of the solenoid pumping valve, so that its life is shortened

Method used

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Examples

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Embodiment Construction

[0030] figure 1 The illustration in shows a simplified representation of a vehicle 1 . A pressurized gas storage 2 is shown in the vehicle 1 , which may be part of a storage system such as pressurized natural gas or hydrogen. The heated gas storage or if there are several, each pressurized gas storage presents a specific valve 3, typically a so-called on-tank-valve (OTV). A gas extraction valve 4 is part of said valve 3 for the gas stored at high pressure in the pressurized gas storage 2 . The item is in figure 1 It is not clearly visible in the illustration, but it will not be explained in detail later. The extracted gas reaches an energy converter 5 which is designed, for example, as an internal combustion engine or as a fuel cell. Energy summoners use the energy stored in the gas, for example by combustion in an engine using reciprocating pistons to produce mechanical energy, or for example in a fuel cell to generate electrical energy from this gas and oxygen from ambie...

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PUM

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Abstract

Extraction valve (4) for an highlypressurised gas flowing from a compressed gas reservoir (2), having a pressure sleeve (9) hermetically sealed on one side and a mobile extraction piston (17), which by moving releases or seals an extraction cross-section, and which on the open side of the pressure sleeve (9) protrudes at least partially into the same. An anchor (16) made of magnetisable material which is mobile in the pressure sleeve (9); an anchor which co-operates with an electromagnetic coil (12). A pilot bore (23) in the extraction piston (17), which connects the inside of the pressure sleeve (9) to a discharge opening (8) for the extracted gas and a sealing element (24), which is pressed by a spring element (26) in a seal-forming manner against the pilot bore (23) and is released in case of movement of the anchor (16). The extraction piston (17) is sealed off with respect to the pressure sleeve (9) by means of a gasket (36); and that a bypass bore (35) is arranged in the extraction piston (17), which bypass bore (35) extends between the side facing the region connected to the compressed gas reservoir (2) and the side of the extraction piston (17) facing the inside of the pressure sleeve (2).

Description

technical field [0001] The present invention relates to a pumping valve for high pressure gas flowing from a pressurized gas storage according to the preamble of claim 1 . The invention also relates to the use of such an extraction valve. Background technique [0002] Extraction valves for high pressure gas flowing from pressurized gas storage, especially pressurized natural gas or pressurized hydrogen, wherein said pressurized gas is usually at 260 bar or 700 bar are known in the prior art. Store under rated pressure. The extraction valve in the context of the present invention not only extracts gas, but also prevents the gas from entering the pressurized gas storage. Typically, the assembly is designed as a so-called pilot valve, where the gas pressure is passed through a regulated ratio between the pilot hole and the bypass or control hole for opening or closing the suction valve or the suction piston of the valve The support of the pressure sleeve is applied on the pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K1/30F16K31/06
CPCF16K1/302F16K1/305F16K31/0655F16K1/30F16K31/06
Inventor P.豪斯曼
Owner NISSAN MOTOR CO LTD