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A passive self-balancing vehicle-mounted natural gas supply system and its stable gas supply method

A gas supply system and natural gas technology, applied in the direction of charging system, oil supply device, engine components, etc., can solve the problems that the economic valve can not reduce the pressure in the bottle and waste resources, so as to reduce energy waste, save energy, The effect of system gas supply stability

Active Publication Date: 2017-07-25
成都市珑熙科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But if there is no gas supply at this time, just when the engine stops using gas, the economic valve cannot reduce the pressure in the bottle. At this time, the pressure in the bottle may exceed the set value of the safety valve, and part of the gas will be emptied, resulting in waste of resources.

Method used

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  • A passive self-balancing vehicle-mounted natural gas supply system and its stable gas supply method
  • A passive self-balancing vehicle-mounted natural gas supply system and its stable gas supply method
  • A passive self-balancing vehicle-mounted natural gas supply system and its stable gas supply method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Such as figure 2 As shown, a passive self-balancing vehicle-mounted natural gas supply system includes LNG gas storage tank 1, liquid outlet pipe 3, carburetor 5, liquid inlet switching valve 4, gas outlet switching valve 6, engine gas supply pipeline and high-pressure gas storage pipeline ;in:

[0037] The liquid outlet pipe 3 is connected between the LNG storage tank 1 and the vaporizer 5;

[0038] The carburetor 5 is provided with two mutually independent gasification pipes: A pipe and B pipe. The A pipe and the B pipe are not connected inside and have their own inlets and outlets. The downstream of the carburetor 5 is connected to the engine air supply pipeline;

[0039] The liquid inlet switching valve 4 is connected between the vaporizer 5 and the liquid outlet pipe 3, and is used to switch the gasification pipe through which the liquefied natural gas in the liquid outlet pipe 3 flows into, so that the liquefied natural gas in the liquid outlet pipe 3 flows into p...

Embodiment 2

[0054] On the basis of Embodiment 1, in this embodiment, air pressure measuring devices are provided on pipe A and pipe B, which are used to measure the air pressure in pipe A and pipe B respectively. When the air pressure in pipe B is measured to reach the set value value, the liquid inlet switching valve 4 and the gas outlet switching valve 6 switch the pipelines connecting the A pipe and the B pipe, and enter the second working state. When it is measured that the air pressure in the A pipe rises to the set value, the liquid inlet switching valve 4 and the gas outlet switching valve 6 switch the pipeline connecting the A pipe and the B pipe again, and enter the working state one. The air pressure measurement device can be but not limited to a barometer, an air pressure sensor, and a barometer.

Embodiment 3

[0056] On the basis of Embodiment 2, a passive self-balancing vehicle-mounted natural gas supply system in this embodiment also includes a control mechanism for controlling the liquid switching valve 4 and the gas outlet switching valve 6 to switch the respective internal flow channels, the A pipe and the B pipe The air pressure measuring devices on the air pressure measuring device are all connected with the control mechanism; the control mechanism receives the air pressure of pipe A and pipe B measured by the air pressure measuring device, and stores the highest air pressure setting values ​​of pipe A and pipe B.

[0057] When the air pressure of pipe B rises to the set value, control the liquid inlet switching valve 4 and the air outlet switching valve 6 to switch the pipeline connecting pipe A and pipe B, and enter working state 2; when the air pressure of pipe A rises to the set value value, control the liquid inlet switching valve 4 and the gas outlet switching valve 6 to...

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PUM

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Abstract

The invention discloses a passive self-balancing vehicle-mounted natural gas supply system and a stable gas supply method thereof. The system comprises an LNG gas storage tank, a vaporizer, a liquid inlet switching valve, a gas outlet switching valve and a high-pressure gas storage pipeline. The LNG gas storage tank and the vaporizer are connected through a liquid outlet pipe. Two gasification pipes A and B independent from each other are arranged in the vaporizer. An inlet of the liquid inlet switching valve is connected to the downstream of the liquid outlet pipe. Two outlets are connected with inlets of the pipes A and B. Two inlets of the gas outlet switching valve are connected with outlets of the pipes A and B. One outlet is connected with a high-pressure gas storage pipeline, and the other outlet is connected with an engine gas supply pipeline. The downstream of the high-pressure gas storage pipeline is connected with the LNG gas storage tank. The high-pressure gas storage pipeline is sequentially provided with a one-way valve and a high-pressure storage unit in the airflow direction. The system can stably provide fuel gas for an engine, a self-pressurizing system of the LNG gas storage tank is omitted, emptying of natural gas can be avoided to the maximum degree, and resource waste is avoided.

Description

technical field [0001] The invention relates to the technical field of vehicle-mounted natural gas supply, in particular to a passive self-balancing vehicle-mounted natural gas supply system and a stable gas supply method thereof. Background technique [0002] At present, the on-board LNG (Liquefied Natural Gas, liquefied natural gas) gas supply system consists of the following parts: LNG gas storage tank, fuel cut-off valve, carburetor, pressure regulating valve, buffer tank, etc. Since this gas supply system needs to match the filling pressure in the steel cylinder with the working requirements of the engine, it is necessary to control the saturation pressure of the filling station to reach a certain required value. This method requires the gas filling station to adjust the temperature of the stored LNG to increase the saturated vapor pressure of the LNG. This will not be conducive to the storage of LNG, and increase the loss of gas station emptying, so now a self-pressur...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02M21/02F02D19/02F02D33/00
CPCY02T10/30
Inventor 肖仁旺刘树文何才卢在江
Owner 成都市珑熙科技有限公司
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