Explain the detection principle of the flame detector

　　It is understood that flame detectors are one of the indispensable spare parts for combustion engines. In the end, there are many brands of flame detectors for how they work. Currently, combustion engine flame detectors using the principle of radiation source solar energy are commonly used, and they are all more practical and feasible methods of combustion engine flame detectors. Next, Xuzhou Jieneng Power Equipment Co., Ltd. will take you to understand the detection principle of the flame detector.

The principle of flame detector radiation source solar compressive strength detection is to use a probe to receive the radiation source emitted by the flame, and distinguish whether the flame appears according to its intensity. Due to the difference in inspection wavelength, it can be divided into ultraviolet light, visible light, infrared induction, and total radiation source flame inspection. The flame detection data signals come from ultraviolet light detectors and smoke detectors.

The flame detector has three separate detection tubes that detect ultraviolet light with a wavelength of 180-260 angstroms. When the radiation of the flame acts on the negative electrode of one of the detection tubes, an ion beam is emitted. The ion beam is so effective that it fills the detector tube with ionized gas, sending out more electronic devices, creating a avalanche standard. More electronic devices are released, creating a transient flow of electrons between the cathode and anode. This instantaneous electron flow (single pulse) is generated repeatedly at a speed proportional to the compressive strength of ultraviolet light. The number of single pulses is converted into a working voltage within the detector and transmitted to the combustion engine control board.

The ultraviolet and infrared probes each detect different parts of the spectrometer. Only when the two probes simultaneously detect the corresponding spectrometer can the ultraviolet and infrared probes be exported, which prevents false alarms caused by certain reasons (such as lightning, arc welding, etc.) when using ultraviolet or infrared probes alone. The flame probe has two relay outputs. The normally open and normally closed point of the common fault solenoid valve is connected in series with the terminal resistor and connected to the normally open point of the flame solenoid valve. When a common fault occurs with the probe, the common fault solenoid valve posture causes a common fault (pilot) data signal.  When a flame is detected, the flame solenoid valve poses, leading to an alarm system.

The UV/IR uses a fully automated oi test function, which is performed approximately once a minute to verify the probe lens cleanliness, sensor sensitivity, and the effectiveness of the internal electronic circuitry. If a common fault is detected three consecutive times, the probe will derive a fault signal.