Split burning fame detecting system

A technology of combustion flame and detection system, which is applied in the detection system of split combustion flame signals and the detection and analysis of combustion flame conditions in boilers. Ignoring the flame signal frequency characteristics and other issues, to achieve the effect of improving the upper limit and reliability, the flame status is real, and the circuit design is simplified

Inactive Publication Date: 2007-09-12
上海神明控制工程有限公司
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Problems solved by technology

Such a measurement ignores the frequency characteristics of the flame signal, making it difficult to accurately detect the flame condition
Especially in a large-scale boiler control system with multiple burners, since there are multiple layers of flames burning and multipl

Method used

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  • Split burning fame detecting system
  • Split burning fame detecting system
  • Split burning fame detecting system

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Embodiment Construction

[0029] The structural features of the detection system of the present invention will be further described below in conjunction with the accompanying drawings.

[0030] Fig. 1 is a schematic structural view of the split combustion flame detection system of the present invention, as shown in Fig. 1, it includes a flame detection probe 1 and a flame detection amplifier 2 two major parts.

[0031] The flame detection probe 1 includes a photodetector 102 and a preprocessing circuit 103 connected to the output of the photodetector 102, wherein the photodetector 102 is used to detect the combustion flame signal 101, and the preprocessing circuit 103 is used for blocking the signal , amplification and filtering processing;

[0032] Described flame detection amplifier 2 comprises the flame analog signal processing circuit 201 that an input end is connected with the output end of the preprocessing circuit 103 in the flame detection probe 1, and the A that the input end is connected with...

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Abstract

A kind of fission type combustion flame detecting system which include only photo detector, fire examine probe and fire examine amplifier that connect to pretreating open circuit of photo detector output terminal. Fire examine amplifier includes one flame analog signal processing circuit, A / D transducer, digital signal processing circuit, display unit, D / A transducer, on-off input and output circuit, and serial communication circuit; the input end of flame analog signal processing circuit attach with pretreating circuit output port of fire examine probe; the input end of A / D transducer attach with flame analog signal processing open circuit's output port; the digital signal processing circuit(DSP) attach with output port of A / D transducer; The display unit, D / A transducer, on-off input and output circuit, and serial communication circuit respectively attach with digital signal processing circuit; the DSP circuit includes microprocessor that has interior signal processing system. The signal processing system includes signal acquisition module, digital filter module and analysis process module. Digital signal processing circuit(DSP)output switching value signal about with or without flame, and with or without trouble, and combustion flame's frequency and its corresponding power spectrum.

Description

technical field [0001] The invention relates to a combustion flame detection system, in particular to a split type combustion flame signal detection system, which is especially suitable for detection and analysis of combustion flame conditions in boilers of thermal power plants or petrochemical enterprises. Background technique [0002] Usually, the probe for detecting combustion flame is an integrated flame detection probe, that is, all relevant circuits are built in a probe housing. The circuit of this kind of integrated flame detection probe is relatively complicated, and the power consumption is high, and the upper limit of the operating temperature of most integrated circuits is 85°C, which makes the upper limit of the working environment temperature of the flame detector not exceed 65°C; The detection probe uses a photosensitive resistor as a photoelectric sensor. The temperature characteristic of the photosensitive resistor is very poor, and its performance drops shar...

Claims

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Application Information

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IPC IPC(8): G01J5/00
Inventor 王平樊凯凯张海华刘国超叶正桂
Owner 上海神明控制工程有限公司
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