CN217356848U

CN217356848U - Abrasion-proof boiler water wall pipe

Info

Publication number: CN217356848U
Application number: CN202221218224.6U
Authority: CN
Inventors: 刘长东; 聂金龙; 武亮; 李超清; 吴玉强; 王玉峰; 牛应应; 赵国彪; 王金龙; 伏彦军
Original assignee: Xinjiang Guanghui New Energy Co ltd
Current assignee: Xinjiang Guanghui New Energy Co ltd
Priority date: 2022-05-21
Filing date: 2022-05-21
Publication date: 2022-09-02
Anticipated expiration: 2032-05-21

Abstract

The utility model discloses an abrasionproof decreases boiler water wall pipe, including a plurality of water pipes (1) and a plurality of fin (2), connect its characterized in that by fin (2) between adjacent water pipe (1): a plurality of mutually parallel fins (3) are radially arranged on one side of the outer wall of the water pipe (1), the fins (3) and the cross section of the water pipe (1) form a certain angle, and an anti-abrasion coating (4) is arranged on the inner wall of the water pipe (1). The utility model discloses can effectively reduce the wearing and tearing of water wall pipe, greatly prolong the operating cycle of boiler, reduce the frequency that the water wall pipe was changed in the inspection of regularly blowing out, reduce the probability that takes place the tube explosion, reduce economic loss and casualties.

Description

Abrasion-proof boiler water wall pipe

Technical Field

The utility model belongs to the technical field of heat transfer device, concretely relates to abrasionproof decreases boiler water wall pipe.

Background

The water wall tube is usually arranged on the inner wall surface of a boiler furnace and consists of a plurality of rows of steel tubes, flowing water is arranged inside the water wall tube, the water wall tube is mainly used for absorbing radiant heat emitted by flame and high-temperature flue gas in the boiler and has the functions of absorbing heat and protecting the boiler wall. The water wall pipe works at high temperature, high pressure, in the adverse circumstances of flue gas corrosion and erosion for a long time, can receive the wearing and tearing of serious high temperature corrosion and flue gas in the water wall pipe outside, can receive the wearing and tearing of saturated steam at the water wall pipe is inside, makes the pipe wall attenuate easily and leads to exploding the pipe occurence of failure even, and the normal operating of boiler is not only seriously influenced to the pipe accident of exploding of revealing of boiler pipeline, also can cause huge economic loss and casualties.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an abrasionproof decreases boiler water wall pipe to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

an anti-abrasion water wall tube comprises a plurality of water tubes and a plurality of fins, wherein adjacent water tubes are connected through the fins, a plurality of fins which are parallel to each other are radially arranged along one side of the outer wall of each water tube, the fins and the cross section of each water tube form a certain angle, and an anti-abrasion coating is arranged on the inner wall of each water tube.

Furthermore, the outer edge of the fin is arc-shaped.

Furthermore, the fin spacing is 10mm-15 mm.

Furthermore, the height of the fins is 4mm-8 mm.

Further, the fins are made of copper-aluminum composite materials.

Further, the angle between the fin and the cross section of the water pipe is 30-60 degrees.

Furthermore, the fins and the water pipe are welded into a whole by a high-frequency generator.

Further, plasma spraying iron-chromium-based composite materials on the outer surfaces of the water pipe, the fins and the fins.

Further, the anti-abrasion coating is a nickel-based alloy coating.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses a radially be provided with a plurality of parallel fins of each other in water pipe outer wall one side, the motion of high temperature flue gas causes wearing and tearing to the water-cooling wall pipe outer wall in the effective boiler that reduces, and the water pipe inner wall sets up the abrasionproof and decreases the coating, effectively reduces steam and causes wearing and tearing to the water-cooling wall pipe inner wall, prolongs the duty cycle of boiler, reduces the frequency that the water-cooling wall pipe was changed in the periodic shut-down check, reduces the probability that the water-cooling wall pipe explodes the pipe greatly, reduces economic loss and casualties.

Drawings

FIG. 1 is a front view of a part of the water-cooled tube wall of the present invention;

FIG. 2 is a top view of a part of the water-cooled tube wall of the present invention;

in the figure: 1. a water pipe; 2. a fin; 3. and a fin.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1, the present invention provides a technical solution:

the utility model provides an abrasionproof decreases boiler water-cooling wall pipe, including a plurality of water pipes 1 and a plurality of fin 2, connect by fin 2 between the adjacent water pipe 1, radially be provided with a plurality of fins 3 that are parallel to each other along 1 outer wall one side of water pipe, fin 3 personally submits certain angle with 1 transversal of water pipe, 1 inner wall of water pipe is provided with abrasionproof decreases coating 4, during the use with the water-cooling wall pipe have fin 3 one side towards the boiler inside installation of hugging closely the boiler inner wall, fin 3 can reduce the velocity of flow of boiler furnace inner wall department high temperature flue gas and the contact with 1 outer wall of water pipe, the motion that effectively reduces high temperature flue gas in the boiler causes the wearing and tearing to the water-cooling wall pipe outer wall, fin 3 still can increase heat transfer area, heat exchange efficiency is improved, fin 3 can avoid solid particle to pile up between fin 3 with 1 transversal certain angle setting of personally submitting of water pipe and cause the heat transfer effect to reduce, abrasionproof decreases that 4 reducible steam caused the pipe inner wall. The mode can greatly prolong the operation cycle of the boiler, reduce the frequency of regularly blowing out the boiler to check and replace the water wall tubes, greatly reduce the probability of tube explosion of the water wall tubes and reduce economic loss and casualties.

The difference of another embodiment is that the outer edges of the fins 3 are arc-shaped, so that the water pipe 1 can be effectively protected, and solid particles can be prevented from being accumulated among the fins 3.

Another embodiment differs in that the fins 3 are spaced 10mm apart.

Another embodiment differs in that the fins 3 are spaced 13mm apart.

Another embodiment differs in that the fins 3 are spaced 15mm apart.

Another embodiment differs in that the fins 3 are 4mm high.

Another embodiment differs in that the fins 3 are 6mm high.

Another embodiment differs in that the fins 3 are 8mm high.

The other embodiment is different in that the fins 3 are made of copper-aluminum composite materials, and the copper-aluminum composite materials have the characteristics of good heat transfer performance, high strength, strong corrosion resistance, difficult deformation under the condition of long-term cold and hot work and long service life.

Another embodiment differs in that the fins 3 are angled at 30 ° to the cross-section of the water tube 1.

Another embodiment differs in that the fins 3 are at an angle of 45 deg. to the cross-section of the water tube 1.

Another embodiment differs in that the fins 3 have an angle of 60 deg. with respect to the cross-section of the water tube 1.

The difference of the other embodiment is that the fins 3 and the water pipe 1 are welded into a whole by a high-frequency generator, so that the bonding strength of the water pipe 1 and the fins 3 is ensured.

The other embodiment is different in that the iron-chromium-based composite material is plasma sprayed on the outer surfaces of the water pipe 1, the fin 2 and the fin 3, the iron-chromium-based composite material has a compact coating structure, and the wear resistance and corrosion resistance are excellent.

The other embodiment is different in that the anti-wear coating 4 is a nickel-based alloy coating, and the nickel-based alloy has high strength and high wear resistance at high temperature, and has good oxidation resistance, corrosion resistance and welding performance.

Claims

1. The utility model provides an abrasionproof decreases boiler water wall pipe, includes a plurality of water pipes (1) and a plurality of fin (2), connects its characterized in that by fin (2) between adjacent water pipe (1): a plurality of mutually parallel fins (3) are radially arranged on one side of the outer wall of the water pipe (1), the fins (3) and the cross section of the water pipe (1) form a certain angle, and an anti-abrasion coating is arranged on the inner wall of the water pipe (1).

2. The wear resistant boiler waterwall tube of claim 1, wherein: the outer edge of the fin (3) is arc-shaped.

3. The wear resistant boiler waterwall tube of claim 2, wherein: the distance between the fins (3) is 10mm-15 mm.

4. The wear resistant boiler waterwall tube of claim 2, wherein: the height of the fin (3) is 4mm-8 mm.

5. The wear resistant boiler waterwall tube of claim 3, wherein: the fins (3) are made of copper-aluminum composite materials.

6. The wear resistant boiler waterwall tube of claim 1, wherein: the angle between the fin (3) and the cross section of the water pipe (1) is 30-60 degrees.

7. The wear resistant boiler waterwall tube of claim 1, wherein: the fins (3) and the water pipe (1) are welded into a whole by a high-frequency generator.

8. The wear resistant boiler waterwall tube of claim 5, wherein: and plasma spraying iron-chromium-based composite materials on the outer surfaces of the water pipe (1), the fins (2) and the fins (3).

9. The wear resistant boiler waterwall tube of claim 1, wherein: the anti-abrasion coating is a nickel-based alloy coating.