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Overfilling preventing device for fuel gas cylinder of automobile using liquefied natural gas as fuel

A technology for liquefied natural gas and fuel, which is used in equipment loaded into pressure vessels, gas/liquid distribution and storage, pipeline systems, etc., to achieve reliable operation, significant social and economic benefits, and eliminate errors and differences.

Inactive Publication Date: 2008-06-04
SHANGHAI JIAOTONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In the existing technology, the invention patent with the application number CN93121139.5 "Method and device for feeding LNG fueled vehicles" proposes a method of sucking out the LNG in the adiabatic main storage tank, and then heating and pressurizing the adiabatic fuel into the vehicle The method and device of the tank, but the method does not involve the problem of preventing overfilling; the application number is the invention patent of CN94227215.3 "Automotive fuel supply device using liquefied natural gas as fuel", and the application number is CN03265430.8 "skid Installed liquefied natural gas vehicle refueling device", also does not involve the problem of preventing overfilling

Method used

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  • Overfilling preventing device for fuel gas cylinder of automobile using liquefied natural gas as fuel

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Embodiment Construction

[0015] The specific implementation of the present invention will be further described below in conjunction with the accompanying drawings.

[0016] Such as figure 1 As shown, the present invention includes: LNG storage tank 1, cryopump 2, vacuum insulation hose 3, quick connector 4, sprinkler 5, throttle valve 6, fuel gas cylinder 7, A shut-off valve 8 and B shut-off valve 9 . Among them, LNG storage tank 1, cryopump 2, vacuum insulation hose 3, quick connector 4 and A cut-off valve 8 are all placed in the filling station, sprinkler 5, throttle valve 6, fuel gas cylinder 7 and B cut-off valve 9 are installed in the car. The sprayer 5 is located at the upper part of the fuel gas cylinder 7, and the distance from the top of the fuel gas cylinder 7 is h. The outlet of LNG storage tank 1 is connected to the inlet of cryopump 2, the outlet of cryopump 2 is connected to one end of vacuum insulation hose 3 through A cut-off valve 8, the other end of vacuum insulation hose 3 is con...

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Abstract

This invention relates to liquefied natural gas automobile tube over casting resistant device in the liquefied natural gas application technique field. The device comprises LHG storage tar, low temperature pump, vacuum isolation heating tube, rapid connector, fuel gas tube, gas saving valve and spray device. This invention uses the spray device fixed on the fuel gas tube to make the LNG sprayed out by smoke to realize the condensing by vapor and voltage reducing and LNG adding to ensure the fuel gas tube maintained with enough expansion space to prevent over adding.

Description

technical field [0001] The invention relates to a liquefied natural gas (LNG) fuel filling device, in particular to a fuel gas bottle anti-overfilling device for a LNG vehicle filled with a sprayer, and belongs to the technical field of liquefied natural gas applications. Background technique [0002] LNG is a high-quality clean fuel used in buses and heavy trucks, which can effectively improve the air pollution caused by vehicle exhaust. During the Tenth Five-Year Plan period, the National Science and Technology Commission launched the "Clean Vehicle Action Plan", which listed urban LNG public transport as a research and demonstration project, aiming to promote the progress of LNG vehicle technology. [0003] With the increasing proportion of LNG in the energy field, the application prospect of LNG vehicles is very broad. As a low-temperature liquefied gas, LNG naturally increases the pressure of the fuel cylinder under the influence of ambient temperature. As we all know...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F17C5/02F17D3/01
Inventor 鲁雪生易希朗顾安忠曹文胜
Owner SHANGHAI JIAOTONG UNIV
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