The speed of the steam boiler heating surface is related to the velocity of the smoke, the concentration and hardness of the ash particles in the flue gas, the arrangement of the tube bundle, etc. the velocity of the flue gas has the greatest influence on the wearing of the heating surface. The test results show that the wear rate of the heating surface pipe is proportional to the three times of the flue gas velocity, so it is necessary to control the flow velocity of the flue gas effectively.
2噸蒸汽鍋爐受熱面的磨損速度與煙氣的流速、煙氣中灰粒的濃度及硬度、管束的布置方式等因素有關(guān)，其中煙氣的流速對受熱面的磨損影響最大。實驗測得，受熱面管子的磨損速度與煙氣流速的三次方成正比，因此必須有效地對煙氣流速進(jìn)行控制。
The furnace wall leakage, local wall flue ash, flue gas flow rate of local convection heating surface will cause severe local slagging in the flue is too large, so that the heating surface tube local wear intensifies, in addition, when the blower working poor, high-pressure steam will blow the heating surface of the pipe corrosion, the pipe wall thinning.
爐墻的漏風(fēng)，煙道的局部墻灰，對流受熱面局部嚴(yán)重結(jié)渣都會使煙道的局部煙氣流速過大，使受熱面管子局部磨損加劇，另外，當(dāng)吹灰器工作不良時，高壓蒸汽蒸汽會將受熱面的管子吹蝕，使管壁減薄。
Wear often occurs in region heating surface pipe is: cold ash hopper, burner, water wall tube flame fold corner, manhole and blowing hole near the steering room before the vertical flue gas; the heating surface of the lower tube; horizontal tail vertical flue heating surface tube upper part two or three pipe and the lower pipe, pipe section two or three support clip edge, near the furnace wall side row pipe and pipe pipe and other prominent individual.
受熱面管子磨損經(jīng)常發(fā)生的區(qū)域是：冷灰斗、燃燒器、折焰角、人孔門以及吹灰孔附近的水冷壁管子;煙氣轉(zhuǎn)向室前立式受熱面的下部管子;尾部豎直煙道的臥式受熱面管排上部第二三根管子、下部第二三根管子、管子支撐卡子邊緣部位、靠近爐墻的邊排管子及個別突出管排的管子等。
Method of reducing heating surface abrasion are: reduce boiler load, reduce the velocity of flue gas; burning coal in high quality, reduce the content of fly ash in flue gas steam boiler; change the tube arrangement, the staggered arrangement for in-line arrangement; remove flue slagging and fouling, increasing gas flow area; reducing furnace wall leakage installation; spoiler or anti abrasion device etc..
減少受熱面磨損的方法主要有：降低鍋爐負(fù)荷，減少煙氣流速;燃用優(yōu)質(zhì)煤種，降低蒸汽鍋爐煙氣中飛灰含量;改變管束布置方式，由錯列布置改為順列布置;清除煙道結(jié)渣及堵灰，增加煙氣流通面積;減少爐墻漏風(fēng);加裝阻流板或防磨裝置等。
Check the scuffing on the bore of the plunger sleeve of DSY electric pressure test pump. If the DSY type electric pressure test pump has passed the sealing test on the ST-990 or 3375375 tester, then the plunger sleeve is available. If the leakage is large, the piston and plunger sleeve must be replaced.
檢查DSY型電動試壓泵柱塞套中孔上的擦傷。如果DSY型電動試壓泵已在ST-990或3375375試驗器上通過了密封性試驗，那么柱塞套是可用的。如果滲漏量很大，就必須更換柱塞及柱塞套。
