During the startup and stable combustion of power plant boilers, the stability and efficiency of the ignition system are directly related to energy utilization and equipment safety. As a key device, the gasification tiny-oil ignition gun TYYQ-III achieves an efficient and reliable ignition process by precisely controlling the millisecond synchronization of ignition gun propulsion, fuel injection and arc generation. The following will be analyzed from the aspects of technical principles, system design and practical application.

I. Technical background and core challenges

During the cold start or low-load operation stage of industrial boilers, the ignition of fuel (such as pulverized coal) depends on the rapid formation of high-temperature fire cores. Traditional ignition methods usually use large-volume burners to provide initial heat sources through high-energy flames. However, this method has problems such as high fuel consumption, large ignition delay, and low thermal efficiency. Especially under complex working conditions, it is easy to cause ignition failure due to poor fuel atomization or arc timing misalignment.

Gasification micro-oil ignition technology has become an effective alternative to traditional solutions by reducing fuel consumption and optimizing the combustion process. The core innovation of the TYYQ-III ignition gun lies in its millisecond-level synchronous control technology, which completes the coordinated actions of ignition gun propulsion, fuel injection and arc generation in a very short time to ensure the rapid formation and stable propagation of the fire core. This process places extremely high demands on the time accuracy, mechanical response speed and energy transfer efficiency of the control system.

II. System design and coordination mechanism

The synchronous control of the TYYQ-III ignition gun relies on the coordination of multi-level closed-loop feedback systems and high-precision actuators. Its core design idea is to control the timing errors of mechanical movement, fluid dynamics and electric energy release at the millisecond level, so as to achieve seamless connection of the ignition process.

• Dynamic response of the propulsion mechanism

The propulsion action of the ignition gun is completed by the pneumatic drive system. When the control system receives the ignition command, the pneumatic propeller quickly pushes the ignition gun head into the burner nozzle to ensure that the relative position of the fuel nozzle and the combustion chamber is accurately aligned. This process needs to be completed within a few milliseconds to avoid spatial misalignment of fuel atomization and arc generation due to propulsion delay. To improve the response speed, the propulsion mechanism adopts lightweight materials and low-friction sealing design, and monitors the propulsion stroke in real time through pressure sensors to ensure the stability and repeatability of the action.

• Precise control of fuel injection

The timing and flow control of fuel injection are the key to successful ignition. The ignition gun rod TYYQ-III adopts high-pressure air atomization technology, which uses compressed air to break the fuel into micron-sized oil droplets to form a uniform oil mist. The control system dynamically adjusts the timing and flow of fuel injection according to the combustion chamber temperature and pressure feedback signal. For example, after the ignition gun is pushed into place, the fuel system immediately starts to spray to ensure that the oil mist has filled the core area of ​​the combustion chamber before the arc is generated. This timing design avoids the spatial separation of oil mist and arc, thereby increasing the probability of ignition.

• Synchronous triggering of arc generation

The generation of the arc must be strictly synchronized with the fuel injection to ensure the immediate formation of the high-temperature fire core. The high-energy igniter of TYYQ-III adopts semiconductor nozzle technology, converts AC into high-voltage DC through a boost circuit, and releases it instantly after capacitor energy storage to form a high-energy arc. The control system uses a time relay and a signal trigger circuit to accurately control the arc triggering time within 1-3 milliseconds after fuel injection. This design enables the arc to act directly on the core area of ​​the oil mist, quickly ignite the mixed gas, and form a high-temperature flame core.

III. Technical Implementation of Millisecond-Level Synchronization

To achieve the millisecond-level synchronization of the above three, it is necessary to rely on high-precision time control algorithms and hardware coordination. The core control unit of the TYYQ-III system ensures timing accuracy through the following technical means:

• Timing Logic Programming

The control system pre-sets the timing logic of ignition gun propulsion, fuel injection, and arc triggering, and calculates the start time of each action in real time through a digital signal processor (DSP). For example, the action time of the propulsion mechanism is calibrated by the stroke signal fed back by the pneumatic pressure sensor, the start signal of the fuel injection is jointly determined by the flow meter and the pressure sensor, and the arc triggering time is based on the delay calculation after the fuel injection is completed. This hierarchical logic programming ensures the independence and coordination of each action.

• Closed-loop feedback correction

In order to cope with environmental fluctuations, the system introduces a closed-loop feedback mechanism. For example, when it is detected that the fuel injection flow rate is lower than the set value, the control system will automatically extend the injection time or adjust the propulsion speed to compensate for the timing deviation. In addition, the flame detector monitors the combustion state in real time through visible light signals and feeds the results back to the CCU for dynamic correction of subsequent ignition parameters. This adaptive adjustment capability significantly improves the robustness of the system.

• Hardware collaborative optimization

The hardware design of the ignition gun TYYQ-III focuses on the coordinated response of each component. For example, the pneumatic thruster and the fuel pump share the same control power supply to ensure the synchronization of their actions; the arc trigger circuit and the fuel injection valve adopt a parallel control structure to reduce signal transmission delay. In addition, key components (such as the ignition gun nozzle and the electric nozzle) are made of high-temperature resistant ceramic materials to avoid mechanical offset caused by thermal expansion. These design details jointly ensure the reliability of millisecond synchronization.

In the actual operation of the power plant boiler, the millisecond synchronization control technology of the TYYQ-III ignition gun shows significant advantages. During the cold start of the boiler, the ignition operation can be completed within 15 seconds, which is more than 30% shorter than the traditional method. More noteworthy is the adaptability of this technology to complex working conditions. In scenarios where the coal powder concentration fluctuates or the air volume changes, the TYYQ-III igniter can still maintain a stable ignition effect by dynamically adjusting the fuel injection amount and timing. This flexibility enables it to perform well in low-load stable combustion, coal type switching and other working conditions.

When looking for high-quality, reliable boiler ignitors, YOYIK is undoubtedly a choice worth considering. The company specializes in providing a variety of power equipment including steam turbine accessories, and has won wide acclaim for its high-quality products and services. For more information or inquiries, please contact the customer service below:
E-mail: sales@yoyik.com
Tel: +86-838-2226655
Whatsapp: +86-13618105229

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