Pulse controller WINTEK series (imported from Taiwan)

The WINTEK-MPK1706 pulse controller is suitable for all gas-fired heating furnaces. This pulse method can achieve uniform heating temperature through sufficient stirring of the furnace atmosphere, while shortening heating time, saving energy, and improving product quality.

● Pulse temperature control system MPK1706 optional 16 segment rise/fall curve programmable temperature control output (including pulse output module PS05)

The temperature control accuracy inside the furnace can reach 1C, which can achieve three-dimensional uniform heating of the product

● Single point/multi-point control mode, customers can freely combine

● Manual/automatic worry free switching

The heating/cooling function can be converted by an industrial computer or manually pressed button

The pulse period and phase difference of each output are automatically adjusted according to the furnace temperature and control input signal

● Hole size: 91mm × 91mm

● Working voltage: AC220V/DC24V, contact capacity: 5A. Optional RS458 communication interface and communication and remote control through industrial computer IPC. PLC interlocking control is also possible, with powerful functions

The optimal control method for selecting the trolley furnace

Introduction to MPK1706 Pulse Combustion Control System (WINTEK, Taiwan)

MPK1706 pulse combustion control adopts an intermittent combustion method, using pulse width modulation technology to achieve temperature control of the kiln by adjusting the duty cycle (on-off ratio) of the combustion time. The fuel flow rate can be pre-set through pressure adjustment, and once the burner KlO/KIC works, it is in a full load state, ensuring that the gas outlet velocity during burner combustion remains unchanged. When it is necessary to increase the temperature, the combustion time of the burner is prolonged and the interruption time is reduced. When it is necessary to cool down, the combustion time of the burner is reduced and the interruption time is prolonged.

Tianjin Steel Pipe Company (Seamless) Tempering Furnace

The main advantages of MPK1706 pulse combustion control are:

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1. High heat transfer efficiency, greatly reducing energy consumption.

2. It can improve the uniformity of the temperature field inside the furnace.

3. The oxidation or reduction atmosphere of the kiln can be adjusted freely according to the needs of firing, and the effect is very obvious.

4. Accurate control of combustion atmosphere can be achieved without online adjustment.

5. Air/gas ratio adjustment.

6. It can improve the load adjustment ratio of the burner.

7. The system is simple, reliable, and cost-effective.

8. Reduce the generation of NOx.

9. It can be controlled independently at a single point or through electrical interlocking to achieve multi-point control (such as 2-4-8-10-12-14-16)

The adjustment ratio of ordinary burners is generally around 1:4. When the burner is operating at full load, the gas flow rate, flame shape, and thermal efficiency can all reach their optimal state. However, when the burner flow rate approaches its minimum flow rate, the thermal load is minimized, the gas flow rate is greatly reduced, the flame shape cannot meet the requirements, and the thermal efficiency drops sharply. When the high-speed burner KIO/KIC is operating below 50% of the full load flow rate, there is a significant gap between the above indicators and the design requirements. Pulse combustion is different. In any case, the burner KIO/KIC only has two working states, one is full load operation, and the other is non operation or low flame operation. The temperature is adjusted by adjusting the time ratio of the two states. Therefore, using MPK1706 pulse combustion can compensate for the low burner adjustment ratio and ensure that the burner operates in the optimal combustion state even when low-temperature control is required. When using a high-speed pulse burner, the gas is sprayed at a fast speed, creating negative pressure around it and drawing a large amount of flue gas into the main gas for thorough mixing and stirring. This prolongs the stagnation time of the flue gas in the kiln, increases the contact time between the flue gas and the product, and thus improves the convective heat transfer efficiency. In addition, the flue gas and gas in the kiln are thoroughly mixed and stirred, making the gas temperature close to the flue gas temperature in the kiln, improving the uniformity of the temperature field in the kiln, and reducing the direct impact of high-temperature gas on the heated object.

The regulation of combustion atmosphere in MPK1706 is an essential part of improving the performance of industrial kilns, and traditional continuous combustion control can only accurately control the combustion atmosphere in the furnace by measuring the residual oxygen content in the flue gas online, feeding it back to the combustion atmosphere controller MPK1706, and then adjusting and controlling the flow output of the combustion air actuator GRT50 in real time. Due to the reliability, lifespan, and price of the oxidation drill sensor for detecting residual oxygen in flue gas, its use in industrial sites is often not ideal. Some kiln control systems simply use a proportional follower to make the flow rate of combustion air and fuel a fixed ratio. However, this method has to leave a large surplus of combustion air, which cannot meet the requirements of optimal energy saving and control of excess oxygen content (or excess air coefficient).

By using the MPK1706 pulse combustion control method, the gas pressure of the air/gas ratio regulating valve AG or the combustion air pressure of the air electric valve GRT50-603 can be adjusted to the appropriate value at once. After the system is put into operation, only these two pressures need to be kept stable. Measuring and controlling pressure is much simpler than controlling flow, and can be fully automated or manually controlled according to the actual situation of the system.

Compared with continuous combustion control, the MPK1706 pulse combustion control system greatly reduces the number of instruments involved in control, with only temperature sensors, pulse controller MPK1706, and pulse electric valve GRT50, omitting a large number of expensive flow and pressure detection control mechanisms. Moreover, due to the fact that only two position switch control is required, the actuator has been changed from the original pneumatic valve to an electric valve GRT50 or solenoid valve EVPF, which increases the safety and reliability of the system and greatly reduces the system cost. All components are imported to make the system more reliable.

MPK1706 pulse combustion, as an internationally leading high-tech, has broad application prospects and can be widely used in industries such as ceramics, metallurgy, and petrochemicals. It will play a significant role in improving product quality, reducing fuel consumption, and minimizing pollution. It is an innovation in the automatic control of industrial kilns and will become the development direction of future industrial furnace combustion technology.

Uniformity of atmosphere and temperature distribution inside the kiln

By using our company's pulse burner KIO/KIC combined with air/gas ratio control technology, the distribution uniformity of the entire furnace atmosphere can be improved. According to the principle of counterflow, the air and gas in the burner have reached the optimal mixing state.

Balance of Excess Air Coefficient

The KSG secondary air temperature regulating burner system can achieve a fixed excess air coefficient or adjustable oxidation/reduction atmosphere according to different process requirements.

Hot air compensation

To achieve energy efficiency, gas combustion devices must minimize the flue gas temperature as much as possible. The residual heat of flue gas is heated by a heat exchanger to assist the combustion air. Our company can also provide corresponding gas and air regulating control valves.