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Fuel concentration measuring device and method

A technology for concentration measurement and fuel, which is applied in fuel oil testing, material inspection products, chemical analysis by combustion, etc. It can solve problems such as difficult measurement, high measurement cost, and accuracy impact

Active Publication Date: 2012-12-26
IND TECH RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the sensor used in this concentration estimation method is very expensive, or the accuracy is seriously affected by the air bubbles in the fuel. Therefore, when measuring, the liquid inside the sensor must be still and free of air bubbles, making the measurement very difficult
[0011] Looking at the above-mentioned concentration measurement methods, there are generally problems such as difficult measurement, high measurement cost, and unstable measurement accuracy.

Method used

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  • Fuel concentration measuring device and method
  • Fuel concentration measuring device and method

Examples

Experimental program
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Effect test

no. 1 example

[0035] Figure 1A and Figure 1B It is a schematic diagram of the fuel concentration measuring method according to the first embodiment of the present invention. Please refer to Figure 1A Firstly, a fuel concentration measuring device 100 is provided, and the fuel concentration measuring device 100 includes a catalyst layer 110 , a diffusion layer 120 , a fuel chamber 130 , a reaction gas chamber 140 and a sensor 150 . The diffusion layer 120 is connected to the catalyst layer 110 , the fuel chamber 130 is suitable for containing the fuel to be tested 160 , and the diffusion layer 120 is located between the fuel chamber 130 and the catalyst layer 110 . The reaction gas chamber 140 is suitable for containing the reaction gas 170 , and the catalyst layer 110 is located between the reaction gas chamber 140 and the diffusion layer 120 . The sensor 150 is disposed on the reaction gas chamber 140 to measure the concentration of the reaction gas 170 in the reaction gas chamber 140 ...

experiment example

[0044] In this experimental example, the fuel to be tested is methanol solution, the reaction gas is oxygen, the selected sensor is an oxygen concentration sensor, the volume of the -reaction gas chamber is 5c.c., and the concentration of the methanol solution used is 1 %, 4%, 7% and 10%.

[0045] figure 2 In the case of different fuel concentrations, the oxygen concentration measured by the sensor and the time relationship curve when the oxygen supply is stopped. Please refer to figure 2 , when the concentration of the used methanol solution is 1%, 4%, 7% and 10%, respectively, there are obvious differences in the decreasing speed of the concentration of the reaction gas. In addition, the curves corresponding to the same concentration of methanol solutions are very close, and the curves corresponding to different concentrations of methanol solutions are very easy to identify and not easy to confuse. Therefore, from figure 2 The curve can easily and accurately calculate ...

no. 2 example

[0048] image 3 It is a schematic diagram of a fuel concentration measuring device applied to a fuel cell power generation system. Please refer to image 3 , the fuel cell power generation system 200 of this embodiment includes the aforementioned fuel concentration measurement device 100, a fuel circulation device 210, a fuel storage tank 220 and a fuel cell module 230, wherein the fuel circulation device 210 is suitable for the fuel storage tank 220 The fuel is delivered to the fuel concentration measuring device 100 and the fuel cell module 230 . In this embodiment, the fuel cell module 230 may include one or more fuel cell units 232 , and the fuel cell unit 232 is, for example, a direct methanol fuel cell unit. Of course, the fuel cell 232 used in this embodiment can be any type of fuel cell, and those skilled in the art can select the most suitable fuel cell according to actual needs.

[0049] In summary, since the present invention can directly measure the reaction gas...

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Abstract

The invention discloses a fuel concentration measuring device which comprises a catalyst layer, a diffusion layer, a fuel chamber, a reaction gas chamber and a sensor. The diffusion layer is connected with the catalyst layer; the fuel chamber is suitable for containing to-be-measured fuel; and the diffusion layer is positioned between the fuel chamber and the catalyst layer. The reaction gas chamber is suitable for containing reaction gas; the catalyst layer is positioned between the reaction gas chamber and the diffusion layer; the to-be-measured fuel in the fuel chamber is diffused to the catalyst layer through the diffusion layer; and the to-be-measured fuel and the reaction gas are burnt and reacted in the catalyst layer to consume the reaction gas in the reaction gas chamber and generate product gas. The sensor is arranged on the reaction gas chamber to measure the concentration of the reaction gas in the reaction gas chamber or product gas. In addition, the invention also provides a fuel concentration measuring method.

Description

technical field [0001] The present invention relates to a fuel concentration measuring device and method, and in particular to a simple and high-precision fuel concentration measuring device and method. Background technique [0002] With the advancement of industry, the consumption of traditional energy such as coal, oil and natural gas continues to rise. Due to the limited stock of natural energy, it is necessary to develop new alternative energy to replace traditional energy, and fuel cells are an important and unique energy. A choice of practical value. [0003] In simple terms, a fuel cell is basically a power generating device that converts chemical energy into electrical energy using the reverse reaction of electrolysis of water. Taking a proton exchange membrane fuel cell as an example, it is mainly composed of a membrane electrode assembly (MEA for short) and two electrode plates. The thin film electrode group is composed of a proton exchange membrane, an anode cat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N31/12G01N33/22
Inventor 康顾严赖秋助
Owner IND TECH RES INST
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