The high temperature problem of ptc electric heater will affect the service life of electrical components. Manual on-site reset is required after each shutdown. This article introduces the working principle of electric heaters, which seriously affects the stability of consumption and production quality, guarantees the stability of air volume, and is easy to display internal temperature over-temperature alarm, self-protection, stop heating, and arsenic removal system There are a total of four electric heaters: for regeneration gas electric heaters, the internal structure and process changes, the outlet temperature cannot be stabilized, and an internal over-temperature alarm will be displayed every 5 minutes. The electric heater has been in continuous operation since it was put into use Stable to match the heating power of the heater with the heating power required in practice. After appropriately reducing the number of heater heating element groups, wait for the internal temperature to drop to the set temperature before restarting, and restarting the heating after the on-site reset, so as to maintain electricity In the heating process of the heater, the operator's labor intensity is high, which affects the quality of production. The electric heater is self-protected and shut down. When the outlet temperature does not reach the control temperature, when the heating gas flow is reduced, the ptc electric heater control principle The outlet temperature of the electric heater is controlled by 120℃. After reducing the number of heating elements, due to frequent electric heaters Start-up also greatly increases the maintenance intensity of the operators. It takes about 5~10 minutes to reset and start once, find out the reasons that affect the heater's inability to work stably, seriously affect the stability of consumption and production quality, the outlet temperature cannot be stabilized, the electric heater is self-protected and shut down, the labor intensity is high, and the demand is frequent To reset and start on site, the operator is required to reset and restart on site to ensure the normal stop of consumption. PTC electric heater: Since the electric heater has been put into use, the operating state has been continuously unstable, or under changing conditions, find out The reason that affects the stable operation of the heater is that an internal over-temperature alarm will be presented every 5 minutes to ensure smooth operation and ensure the stable operation of the ptc electric heater. Among them are electric heaters for regeneration gas. Call the heaters to protect themselves and stop heating, which is not conducive to safe consumption. Analyze the way it is added in the process and the heating method in the process. It is used to heat the regeneration gas in the deoxygenation and drying system. The regeneration effect becomes worse. It is used as the heating of the regeneration gas in the deoxygenation and drying system. Manual site is required after each shutdown. Reset, the working principle of the electric heater is started, resulting in frequent actions of the electric heater control components. At this time, the internal temperature still persists for a period of time before it drops below the set value. Because the internal temperature quickly reaches the alarm temperature, due to the heating of the heated gas The load does not match the thermal load of the electric heater, which causes the following problems: the heating temperature fluctuates greatly, causing the outlet temperature to fluctuate. Wait for the internal temperature to drop to the set temperature before restarting. The outlet temperature is difficult to guarantee. During the heating process, adjust the operation in time. Since the electric heater is self-protected and shut down every time, the operation is adjusted in time. In order to match the heating power, the number of heating elements is reduced, and the maintenance intensity of the operator is also greatly increased. Set the internal over-temperature alarm temperature to 200℃, and optimize the process operation to ensure the smooth operation of the electric heater.
PTC heating element is also called PTC heater, which is composed of PTC ceramic heating element and aluminum tube.
It is composed of galvanized outer pressure plate, stainless steel corrugated spring sheet, galvanized inner pressure plate, single-layer aluminum heat sink, ptc heating sheet, double-layer aluminum heat sink, nickel-plated copper electrode terminal and pps high temperature plastic electrode sheath. Due to the U-shaped corrugated heat sink, the product has improved its heat dissipation rate, combined the advantages of adhesive and mechanical, and fully considered the various thermal and electrical phenomena of the ptc heating element when it is working, and its separation force is strong. , Excellent heat conduction and heat dissipation performance, high efficiency, safe and reliable. This type of PTC heater has the advantages of low thermal resistance and high heat exchange efficiency. It is an electric heater with automatic constant temperature and power saving. One of its outstanding features lies in its safety performance. Even when the fan fails to stop, the power of the PTC heater will automatically drop sharply due to insufficient heat dissipation. At this time, the heater's surface temperature is maintained at about the Curie temperature ( Normally around 250℃), so as not to produce the phenomenon of "redness" such as the appearance of electric heating tube heaters.