ND Steel Boiler Fin Tube / Double H Type Finned Tube Heat Exchanger Longlife

ND Steel Boiler Fin Tube / Double H Type Finned Tube Heat Exchanger

Advantage

1. Excellent wear resistance

The wear is mainly due to the impact and cutting effect of gray particles on the pipe. The wear is the most severe around the pipe at a level of 30 degrees. When S1/d=S2/d=2, the wear amount here is 3 times of the average value.

Due to the change of air flow direction, the second row has the most severe wear. When S1/d=S2/d=2, the second row is twice as much as the first row wear, and the subsequent row wear is generally 30% to 40% higher than the first row.

The arrangement of the first row is the same as the arrangement of the first row in the sequence.Under the same conditions, the maximum wear of the longitudinal tube bundle is 3-4 times less than that of the staggered tube bundle.

The abrasion speed of the pipe is directly proportional to the non-uniformity coefficient of the flue gas velocity KV3.33, and is directly proportional to the non-uniformity coefficient of the fly ash concentration Ku.

The h-shape finned tube economizer is arranged in sequence. The h-shaped fin divides the space into several small areas and has a uniform flow effect on the airflow. Compared with the optical tube economizer, spiral fin economizer and longitudinal fin economizer with staggered arrangement, the wear life is 3-4 times higher under other conditions.

Flue gas side damper protects the bend part.

2. Reduced dust accumulation

Ash formation occurs on the pipe's back and windward sides.It is easy to scour the pipe by disarrangement, and less dust accumulates on the back.As for the pipe arrangement in sequence, due to the fact that the air flow is not easy to flush the back of the pipe, there is more ash accumulation in the pipe arrangement in sequence than in the wrong column.

The h-type fin is welded on both sides of the pipe, which does not accumulate ash, while the air flow flows straight, the air flow direction does not change, and the fin does not accumulate ash.

A gap of 4-10 is left in the middle of the h-type fin, which can guide the air flow to sweep the pipe fin to accumulate dust.

As the spiral Angle of the fin guides the flow direction, the ash accumulation of the fin tube is more serious, and the economizer which does not form loose ash cannot be used.Field operation shows that the h-shaped fin tube does not accumulate ash, while the spiral fin is seriously.

The longitudinal fin tube is formed by the flow of air along the fin as the fin is welded on the surface and back of the accumulated ash.Some areas are prone to dust accumulation.

The h-shaped fin, which forms a straight channel on both sides, has the best blowing effect.

3. Compact space and low cost

The pipe set is much compact and reduces the height of tail smoke well.

The total weight is greatly reduced and the load of the suspension system is reduced.

Reduce cost of economizer and integral boiler.

4. Reduce smoke lateral resistance

Reduce the operating and investment cost of induced fan.

5. Reduce welding joint and improve reliability.

Production

The two fins of the h-shaped fin tube are rectangular, almost square, and the side length is about twice that of the light tube.Belongs to the extended heating surface.The h-shaped fin tube adopts the flash resistance welding process, which has high weld fusion rate, high tensile strength and good thermal conductivity.The h-shaped fin tube can also be made into a double-tube "dual-h" fin tube, which is of good rigidity and can be applied in the case of longer pipe rows.

Parameter

Certificate

Workshop

Hua Dong Boiler Co., Ltd. is a high-tech enterprise specialized in manufacturing boilers. Established in early 1985s, has two manufacturing bases, this company covers 400,000㎡ with fixed assets amounting to USD 110,000,000. There are 1100 employees including 150 technicians and 600 coded welders. Hua Dong holds the manufacturing licenses for Grade A boilers and Grade A1&A2 pressure vessels issued by Chinese General Administration of Quality Supervision, Inspection and Quarantine; also it holds the "S" and "U" "NB" stamps issued by American Society of Mechanical Engineers; meanwhile, this Company has passed the certification of ISO9001, SO3834, EN12952 Quality Management System.

"Hua Dong" boilers include Utility Boiler, HRSG Boiler, coal-fired , oil(gas) -fired, coal-water-slurry-fired and garbage-fired steam/hot water boilers, organic heat carrier boilers, etc., and Boiler spare parts (Economizer, Finned tube, Header, Steam drum, Superheater, Water wall panel, Air preheater, Cyclone separator, etc., which are widely used in power generation, heat supply, chemical engineering, textile, food, paper, road building, plastic, rubber and wood working industries. "HD" boilers are honored as "Famous Production in Jiangsu Province", " Jiangsu High-Tech Product" and "Jiangsu Energy-Saving Product". "HD" brand is a "Famous Brand in Jiangsu Province". We are a qualified supplier for the top three boiler manufacturers in China(Harbin Boiler Co., Ltd., Dong Fang Boiler Group Co., Ltd., Shanghai Boiler Works Ltd.,). So far, Hua Dong Boilers have served 10000 customers, which sell well all over China and are exported to USA, Australia, Russia, Kazakhstan, India, Indonesia, South Africa, Brazil, and Southeast Asia.

We strive to manufacture "Safe, Efficient, Energy-Saving and Environment-Friendly" boilers, provide new-type products in excellent quality, serve users sincerely to their satisfaction, and be a top supplier of boilers in China.

Declaration

Zhangjiagang Hua Dong Boiler Co.,Ltd has no subsidiaries. 

Packaging & Shipping

Company Business

Our products have been wildly used in power plants and large international companies overseas.