CN205957165U - Improve combustor of combustor abrasive resistanc - Google Patents

Abstract

The utility model relates to an improve the method of combustor abrasive resistanc, this combustor includes parent tube, coal wind wing, coal wind wing outer tube, outer coal pipe, outer coal wind wing, outer coal wind wing base pipe, outer coal wind wing outer tube, guide plate and head taper pipe, and coal wind wing welds through the build -up welding on the lateral wall of parent tube, the lateral wall of coal wind wing base pipe outside is fixed to outer coal wind wing through the build -up welding on, outer coal wind wing outer tube is installed on outer coal wind wing, and the guide plate passes through the thread tightening in the coal wind wing outer tube outside, and the head taper pipe passes through the one end rigid coupling of bolt and guide plate, coal wind wing outer tube sets up between coal wind wing and the outer coal wind wing base pipe, coal wind wing outer tube one end and connecting piece threaded connection, the one end of connecting piece and the tip rigid coupling of outer coal pipe. The utility model discloses adopt the thread tightening sleeve pipe with the outer tube, can change at any time after the wearing and tearing of coal wind wing outer tube, have wear -resisting, high temperature resistance carbide coating at buggy wing surface coating simultaneously, can be with the life by a wide margin of combustor.

Description

A kind of burner improving burner abrasive resistance

Technical field

This utility model is related to the field of burner, and more particularly, to one kind can significantly improve the solid fuels such as combusting coal fines Burner abrasive resistance and service life method burner.

Background technology

On the new type nonaqueous cement production line with coal dust as main fuel, burner is one of key equipment.Due to combustion Under 1600 DEG C of the condition of high temperature, speed in burner wind wing for the coal dust is up to 40 meter per seconds, institute in coal dust for burner long-term work The ash containing have stronger abrasion, coal wind wing and coal wind wing sleeve pipe will soon heavy wear, and because of coal wind wing trocar sheath Bigger with the contact surface of high speed coal dust, lead to it to be easier to damage, coal wind wing trocar sheath damages and is accomplished by changing burner, due to The coal wind wing trocar sheath of existing burner and coal wind wing are to be welded as a whole it is impossible to change, and lead to the service life of burner Just at 5-6 month.

Utility model content

In order to solve the above problems, the technical solution of the utility model, in the process of surface of the work strengthening and protection, It is with air-liquid state fuel, electric arc or plasma arc make thermal source, spraying material are heated to molten state, by compressed air Or flame thrust, it is ejected into pretreatment to the surface of workpiece, forms desired thickness and hardness coating structure simply and changes Become burner structure, the burner of the service life of combusting coal fines can be significantly improved.

The technical solution of the utility model is：A kind of improve burner abrasive resistance method, the method specifically include with Lower step：

The structure of this burner is：Burner includes base tube, coal wind wing, coal wind wing trocar sheath, outer coal pipe, outer coal wind wing, Outer coal wind wing base pipe, outer coal wind wing trocar sheath, deflector and head Taper Pipe, described coal wind wing welds described base tube by built-up welding On lateral wall, described outer coal wind wing is fixed on the lateral wall of described outer coal wind wing base pipe by built-up welding, outside described outer coal wind wing Sleeve pipe is arranged on described outer coal wind wing, and described deflector is threadedly secured to outside described coal wind wing trocar sheath, described head It is affixed with one end of described deflector that portion's Taper Pipe passes through bolt；Described coal wind wing trocar sheath is arranged on described coal wind wing and outer coal wind Between wing base pipe, threadeded with connector in described coal wind wing trocar sheath one end, one end of described connector and described outer coal pipe End affixed.

Further, surface-coated a layer thickness of described coal wind wing is the tungsten carbide coating of 1-3mm.

Further, described tungsten carbide coating fineness：Ra 5-8μm.

The beneficial effects of the utility model are：Due to adopting technique scheme, trocar sheath is adopted by this utility model Be screwed sleeve pipe, can change at any time after casing wear, has wear-resisting, the carbon of interior high temperature in coal dust wing surface-coated simultaneously Compound coating, can be by the significantly service life of burner.

Brief description

Fig. 1 is a kind of cross section structure schematic diagram of burner of this utility model.

Fig. 2 is a kind of cross-sectional view of burner of this utility model.

Fig. 3 is a kind of coal wind fin structure schematic diagram of burner of this utility model.

In figure：

1. base tube, 2. coal wind wing, 3. coal wind wing trocar sheath, 4. outer coal wind wing, 5. outer coal wind wing base pipe, 6. outside outer coal wind wing Sleeve pipe, 7. deflector, 8. head Taper Pipe, 9. connector, 10. coal pipe, 11. coatings.

Specific embodiment

Below in conjunction with the accompanying drawings the technical solution of the utility model is described further.

As shown in Figure 1-2, a kind of burner of this utility model, this burner includes base tube, coal wind wing, coal wind wing overcoat Pipe, outer coal pipe, outer coal wind wing, outer coal wind wing base pipe, outer coal wind wing trocar sheath, deflector and head Taper Pipe, described coal wind wing leads to Cross built-up welding and weld on the lateral wall of described base tube, surface-coated one thickness of coal wind wing is 1-3mm tungsten carbide coating, described outer coal Wind wing is fixed on the lateral wall of described outer coal wind wing base pipe by built-up welding, and described outer coal wind wing overcoat is arranged on described outer coal wind On wing, described deflector is threadedly secured to outside described coal wind wing trocar sheath, described head Taper Pipe pass through bolt with described One end of deflector is affixed；Described coal wind wing trocar sheath is arranged between described coal wind wing and outer coal wind wing, outside described coal wind wing Sleeve pipe is threadeded with connector, and described connector is affixed with the end of described outer coal pipe.Coal wind wing handling process is as follows：

Carry out part inspection first：Visual inspection part should corrosion-free, damage or serious greasy dirt, size should meet drawing Require.

Oil removing is cleaned：With gasoline or acetone thoroughly cleaning or wiper element surface, and blown off with compressed air.Washed zero Clean dried, no current mark, no dirt are answered in part surface.

Using fixture and protection adhesive tape, part non-spraying surface is implemented effectively to protect.

Blasting treatment:Check abrasive material title, specification, blasting pressure, sandblasting distance and sandblasting angle by technological requirement.Pressure Formula sandblasting machine nozzle pressure is generally 0.5 Mpa～0.8 Mpa.Surface after sandblasting should assume uniform no metallic luster , should drain spray and cross spray in roughened state.

Clear up after sandblasting：Remove sandblasting protection fixture and veil, remove surface with the dry compressed air of cleaning and float ash Sand dust with inner cavity of component.

Protection before spraying：Check before spraying whether the veil of part area to be sprayed is had to non-spraying surface The protection of effect.

The preparation of sprayed on material：Sprayed on material should be dried 1-2 hour in advance in 70-100 DEG C of baking oven.Using general before Powder mixes in container for stirring to guarantee the uniformity of powder.

Spraying：Supersonic spray coating should adopt automatic spray form, and spray gun must be tried one's best vertical piece surface, with clean pressure Contracting air cools down part, and in spraying process, Part temperature is not to be exceeded timeliness or the annealing temperature of matrix, usual part base solid Temperature is less than 150 DEG C, for the non-ferrous metal part such as titanium alloy, magnesium alloy, aluminium alloy, should be less than 100 DEG C, cooling is empty Gas without prejudice to spray stream, the pressure of compressed air is 0.5-0.8Mpa, and cooling blow gun should be greater than 200mm away from workpiece distance, removes Cooling down workpiece or measure thickness need to interrupt spraying outer, typically answers continuous spray, the break period is less than 1 hour.Concrete spraying Parameter should set in strict accordance with respective coatings process chart.

Spraying post processing：After the completion of all spraying operation, protection materials should remove.

Factory floor is checked：Coating is checked, outward appearance answers uniformly continuous, flawless, peeling, foaming etc. to lack under 5 times of magnifieres Fall into, spraying area should meet drawing requirement, does not allow should not have coating at spraying.

Laboratory inspection：Whether accorded with by the bond strength of test in laboratory workpiece, hardness, porosity, metallographic structure etc. Close claimed below.

Tungsten carbide coating performance：

（1）Its melting point：2700 DEG C about；

（2）Coating porosity：<1%；

（3）Coating microhardness：HV0.3 1000-1200（HRC70 about）；

（4）Anchoring strength of coating：> 70MPa；

（5）Coating fineness after spraying：Ra 5-8μm；

（6）Coating layer thickness is 1-3mm.

Above an embodiment of the present utility model is described in detail, but described content is only of the present utility model Preferred embodiment is it is impossible to be considered for limiting practical range of the present utility model.All made according to this utility model application range Impartial change and improvement etc., all should still belong within patent covering scope of the present utility model.

Claims (3)

1. a kind of burner improving burner abrasive resistance, this burner includes base tube, coal wind wing, coal wind wing trocar sheath, outer Coal pipe, outer coal wind wing, outer coal wind wing base pipe, outer coal wind wing trocar sheath, deflector and head Taper Pipe, described coal wind wing passes through built-up welding Weld on the lateral wall of described base tube, described outer coal wind wing is fixed on the lateral wall of described outer coal wind wing base pipe by built-up welding, Described outer coal wind wing trocar sheath is arranged on described outer coal wind wing, and described deflector is threadedly secured to described coal wind wing overcoat Outside pipe, it is affixed with one end of described deflector that described head Taper Pipe passes through bolt；It is characterized in that, described coal wind wing trocar sheath It is arranged between described coal wind wing and outer coal wind wing base pipe, threadeded with connector in described coal wind wing trocar sheath one end, described One end of connector is affixed with the end of described outer coal pipe.

2. the burner according to claim 1, the tungsten carbide of surface-coated a layer thickness 1-3mm of described coal wind wing applies Layer.

3. burner according to claim 2, described tungsten carbide coating fineness：Ra 5-8 μm.