LNG gas supply system and control method for reducing LNG gasification emission
A control method and emission technology, applied in electrical control, charging system, engine control, etc., can solve problems such as waste of energy
Active Publication Date: 2019-11-26
HUBEI JINQUAN NEW MATERIALS CO LTD
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Problems solved by technology
For example, for a 240L liquid storage tank, the daily loss of liquefied natural gas due to rising gasification is about 6L, wasting energy
Method used
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[0025] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the associated drawings. Preferred embodiments of the invention are shown in the accompanying drawings. However, the present invention can be embodied in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.
[0026] It should be noted that when an element is referred to as being “fixed” to another element, it can be directly on the other element or there can also be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and similar expressions are used herein for purposes of ill...
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The invention discloses an LNG air supplying system capable of reducing LNG rising gasification discharge and a control method. The LNG air supplying system capable of reducing the LNG rising gasification discharge comprises an LNG liquid storage pot, an electric liquid discharge valve, a gasifier, a pressure reducing regulating valve, a buffering pot and an engine which are successively connected. The LNG liquid storage pot is further provided with a self-pressurizing system for changing the liquefied natural gas to the steam and returning the steam to the LNG liquid storage pot. The self-pressurizing system comprises a self-pressurizing coiler, an electric pressurizing regulating valve and a pressurizing stop valve which are successively connected. The self-pressurizing coiler and the pressurizing stop valve are connected with the LNG liquid storage pot. A pipeline connected with the buffering pot and the engine is provided with a pressure gage. The LGN air supplying system further comprises a first gas discharging safety valve and a radiating coiler. The LNG liquid storage pot is connected with the buffering pot by the first gas discharging safety valve and the radiating coiler successively. The buffering pot is provided with a second gas discharging safety valve. The provided LNG air supplying system capable of reducing LNG rising gasification discharge and the control method are capable of reducing the energy waste.
Description
technical field [0001] The invention relates to the technical field of gas-electric range-extending electric vehicles, in particular to an LNG gas supply system and a control method for reducing the emission of LNG ascension and gasification. Background technique [0002] The storage method of LNG for vehicles is to store the ultra-low temperature LNG liquefied natural gas at -162°C in a stainless steel thermal insulation storage tank. This thermal insulation storage tank is basically made of double-layer vacuum and sandwiched with powder insulation materials. . No matter how well-sealed, vacuum-filled and heat-insulated liquid storage tanks are done, it is inevitable that the temperature will slowly rise as the storage time increases, which will cause LNG to rise and vaporize, and LNG to rise and gasify will lead to heat-insulated liquid storage. The pressure of the tank increases. For safety, the general practice is to discharge directly into the air, resulting in a wast...
Claims
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IPC IPC(8): F02M21/02F02D19/02F02D41/00
CPCF02D41/0027F02M21/0209F02M21/0221F02M21/0242F02M21/0287Y02T10/30
Inventor 刘晓龙李超戴贤青李华文朱锦其黄国民刘金成
Owner HUBEI JINQUAN NEW MATERIALS CO LTD