Fuel supply system, fuel cell system, and method for running each

A fuel supply system and fuel supply technology, which are applied in the fields of fuel cells, fuel cell additives, combustion methods, etc., can solve the problems of difficult control and the inability of thermal flow meters to express accurate values.

Inactive Publication Date: 2014-09-24
JX NIPPON OIL & ENERGY CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In this way, when the properties of the fuel, especially the components are different, the thermal flowmeter cannot express an accurate value, and it is difficult to perform proper control

Method used

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  • Fuel supply system, fuel cell system, and method for running each
  • Fuel supply system, fuel cell system, and method for running each
  • Fuel supply system, fuel cell system, and method for running each

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Embodiment Construction

[0031] Hereinafter, the embodiment of the present invention will be described in detail.

[0032] First, as the first embodiment of the present invention, based on Figure 1 ~ Figure 4 An embodiment in which the present invention is applied to a general-purpose fuel supply system will be described.

[0033] figure 1 It is a schematic configuration diagram of a fuel supply system shown as a first embodiment of the present invention.

[0034] The fuel supply system of the present embodiment includes a fuel supply device 2 that supplies hydrocarbon-based gas fuel to a supply target (various gas facilities) 1 . In this embodiment, in particular, it is a fuel supply system that supplies city gas derived from natural gas as a gaseous fuel.

[0035] The fuel supply device 2 is composed of a flow control valve and the like connected to a gaseous fuel supply source, and controls the supply amount based on a signal from the control device 7 .

[0036] In the supply path of the gase...

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PUM

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Abstract

In the present invention, gaseous fuel is stably supplied with the amount of heat generation as the control value even if the composition of the gaseous fuel changes. A composition-independent flow rate meter (4) that can measure flow rate independently of the composition of the gaseous fuel is disposed in series with a thermal flow rate meter (3) in the supply pathway of gaseous fuel. When the value measured by the thermal flow rate meter (3) and the value measured by the composition-independent flow rate meter (4) diverge by at least a certain amount, it is determined that there is an abnormal state, and a conversion factor is set with respect to the value measured by the thermal flow rate meter (3). On the basis of the conversion factor, the composition of the gaseous fuel is inferred, on the basis of which the amount of heat generation of the gaseous fuel is inferred. On the basis of the amount of heat generation of the gaseous fuel, the amount of supply of the gaseous fuel by a fuel supply device (2) is adjusted in a manner so that a target amount of supply heat generation per unit time is obtained.

Description

technical field [0001] The present invention relates to a fuel supply system or a fuel cell system including a fuel supply device for supplying a hydrocarbon-based gaseous fuel, and particularly relates to a technique for controlling the supply amount of the gaseous fuel using the calorific value as a management value. Background technique [0002] In the fuel supply system, a flow meter for measuring the flow rate of the gaseous fuel is arranged on the supply path of the gaseous fuel, and based on the measured flow rate, the supply amount of the fuel is feedback-controlled or used as a parameter for other control. As the above-mentioned flowmeter, a thermal flowmeter which is a mass flowmeter is generally used. This is because thermal flowmeters are easy to downsize and have good responsiveness in addition to their small size. [0003] However, satisfactory control cannot be performed because the properties (components, heat) of the gaseous fuel vary. Especially in the ca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23N5/00F23N1/00G01F1/00G01F15/04H01M8/04H01M8/06
CPCG01F1/68H01M8/04388G01F15/04F23N1/00H01M8/04753F23N5/00H01M8/04089G01F1/00Y02E60/50H01M8/04679H01M8/0618H01M8/04328H01M8/04313
Inventor 冢越庄一水野康
Owner JX NIPPON OIL & ENERGY CORP
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