1噸燃氣鍋爐運行過程中的問題有哪些？
What are the problems in the running of a ton of gas boilers?
發(fā)生在1噸燃氣鍋爐低溫受熱面上的低溫腐蝕主要有這么幾點：有化學腐蝕（如硫酸作用于金屬），也有電化學腐蝕（如水蒸氣冷凝后與金屬作用）。這兩種腐蝕基本發(fā)生在溫度低于酸露點的壁面上。蒸發(fā)受熱面上的積灰，有時也能加速腐蝕。
In the steam boiler low temperature heating surface of low temperature corrosion mainly include such points: chemical corrosion (such as sulfuric acid ACTS on metal), also have electrochemical corrosion and metal) after (such as water vapor condensation. These two kinds of corrosion occur at the surface of the wall where the temperature is below the dew point. The soot that evaporates on the hot surface can sometimes accelerate corrosion.
排氣速度慢的原因有以下幾點：出口濾心阻塞；配管的截面積太小或管路太長；入口端的過濾網(wǎng)阻塞；逆止閥打不開。解決此類問題的辦法：更換出口濾心，更換截面積較大的管路，或縮短管路距離；清理過濾網(wǎng)，在入口端裝一個空氣濾清器；檢查逆止閥的彈簧。
The reasons for the slow exhaust are: the outlet filter is blocked; The length of the pipe is too small or the line is too long; The filter on the entrance is blocked; The reverse valve will not open. The solution to this problem is to replace the outlet filter, replace the larger section, or shorten the distance of the line. Clean up the filter and install an air filter at the entrance. Check the spring of the reverse valve.
除此以外蒸汽鍋爐還容易出現(xiàn)蒸汽、給水管道損壞現(xiàn)象：管道輕微泄漏時，發(fā)出響聲，保溫層潮濕或漏汽、滴水。管道爆破時，發(fā)出顯著響聲，并噴出汽、水。蒸汽或給水流量變化異常，爆破部位在流量表前，流量減少；在流量表之后，則流量增加。蒸汽壓力或給水壓力下降。給水母管爆破時，運行爐水位下降。
In addition, the steam boiler is also prone to the damage of steam and water pipes: when the pipe is slightly leaking, it makes a noise, moisture or leakage of moisture and water. When the pipe is blasting, a striking sound is made and the steam and water are expelled. The change of steam or feed water is abnormal, the blasting site is in front of the flowmeter, and the flow rate decreases. After the flowmeter, the flow increases. Steam pressure or water pressure is down. When blasting the jellyfish, the water level drops.
造成這些現(xiàn)象的原因主要有：蒸汽管道超溫運行，蠕脹超過標準或運行時間過久，金屬強度降低。蒸汽管道暖管不充分，產(chǎn)生嚴重水沖擊。給水質(zhì)量不良，造成管壁腐蝕。給水管道局部被沖刷致使管壁減簿。給水系統(tǒng)運行不正常，壓力波動過大，發(fā)生水沖擊或振動。安裝、制造、材質(zhì)和焊接不良等。解決辦法是：如給水管道泄漏輕微，能夠保持鍋爐給水，且不致很快擴大故障時，可維持短時間運行，盡快投入備用鍋爐，若故障加劇，直接威脅人身或設(shè)備安全時，則應(yīng)停爐。
The main reason for these phenomena is that the steam pipeline overtemperature runs, the creep exceeds the standard or the running time, the metal strength decreases. The steam pipe is not sufficiently warm to produce a severe water shock. Poor quality of water supply causes corrosion of pipe wall. The area of the water supply pipe is washed away and the wall of the pipe is reduced. The water supply system runs abnormal, the pressure fluctuates too much, the water shocks or vibrates. Installation, manufacturing, material and welding. Solution is: if the water supply pipeline leak slightly, can maintain the boiler feed water, and does not quickly expanding failure, can maintain a short running, put into standby boiler as soon as possible, if the fault is deepening, direct threat to the personal or safety equipment, should be stopped.
如給水管道爆破，應(yīng)設(shè)法盡快將故障管段與系統(tǒng)解列，若不能解列而又無法保持汽包水位時，亦應(yīng)停爐。如蒸汽管道泄漏輕微，不致很快擴大故障時，可維持短時間運行，盡快投入備用鍋爐；若故障加劇，直接威脅人身或設(shè)備安全時，則應(yīng)停爐。
If the water supply pipe is blasting, it should be tried to solve the fault line and the system as soon as possible, and when the water level is not maintained, the furnace should also be stopped. If the steam leak is slight, it will not be expanded quickly, it will be able to keep running for a short time, and then it will be put into the spare boiler as soon as possible. If the fault is aggravated, the fire should be stopped if the person or equipment is safe.
