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LNG (Liquefied Natural Gas) pressurization control system

A pressurization control and controller technology, applied in the field of LNG trucks, can solve problems such as driving inconvenience

Pending Publication Date: 2021-07-16
常州易控汽车电子股份有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Since the conversion of liquid natural gas into gaseous natural gas requires a large amount of heat, and in the prior art, a heating device is used to pressurize, this makes it take a long time in the prior art to make the gas pressure of the gaseous natural gas reach the value required for engine startup. When the air pressure does not reach the value required for the engine to start, the LNG truck needs to stop and wait, causing traffic inconvenience

Method used

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  • LNG (Liquefied Natural Gas) pressurization control system

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Embodiment Construction

[0032] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Apparently, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0033] It should be noted that the terms "include" and "have" and any variations thereof in the embodiments of the present invention and the drawings are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device comprising a series of steps or units is not limited to the listed steps or units, but optionally also includes steps or units that are not listed, or optionally further includes For other steps or units inhe...

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Abstract

The invention discloses an LNG (Liquefied Natural Gas) pressurization control system. Liquefied natural gas is stored in an LNG storage tank, and the liquefied natural gas is converted into gaseous natural gas through a vaporizer device and stored in a first gaseous natural gas buffer tank; a pressure sensor detects the air pressure of a second gaseous natural gas buffer tank and sends the air pressure to a pressurization control device; when the pressurization control device detects that the received air pressure is smaller than a preset minimum value, the gaseous natural gas in the first gaseous natural gas buffer tank is pumped into the second gaseous natural gas buffer tank, and when the air pressure of the second gaseous natural gas buffer tank reaches the air pressure for starting the natural gas engine, a natural gas engine is started; and when the pressurization control device detects that the received air pressure is larger than a preset maximum value, the pressurization control device stops working. The pressurization control device is arranged for air exhaust and pressurizing, rapid pressurizing can be achieved in a short time, engine starting is achieved in a short time, and driving convenience is improved.

Description

technical field [0001] The invention relates to the technical field of LNG trucks, in particular to an LNG pressurization control system. Background technique [0002] Because LNG (Liquefied Natural Gas) trucks have low pollution emissions, long battery life, and lower fuel costs than diesel, LNG trucks are widely used as the country upgrades its emission standards step by step. [0003] The engine of the LNG truck needs to input gaseous natural gas with a certain pressure when starting, and LNG is liquefied natural gas, and the liquefied natural gas needs to be heated to become gaseous natural gas. When the pressure of the gaseous natural gas reaches a certain value, the engine starts to work. [0004] Since the conversion of liquid natural gas into gaseous natural gas requires a large amount of heat, and in the prior art, a heating device is used to pressurize, this makes it take a long time in the prior art to make the gas pressure of the gaseous natural gas reach the val...

Claims

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Application Information

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IPC IPC(8): F17C5/06F17C13/02F17D1/04F17D3/01
CPCF17D1/04F17D3/01F17C5/06F17C13/025F17C2270/0171F17C2265/066F17C2250/043
Inventor 贺飞王培铭楚云路李中方成郝守刚
Owner 常州易控汽车电子股份有限公司
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