CN217816716U - Bayonet type detachable movably-matched boiler hood - Google Patents

Abstract

The utility model relates to a bayonet detachable movable fit boiler hood, belonging to the technical field of boilers and comprising a fan cover; one end of the air pipe is inserted into the fan cover and matched with the fan cover; and the 7-shaped buckle is fixedly installed outside the fan housing and used for connecting and fixing the air pipe and the fan housing. The utility model discloses a 7 style of calligraphy buckle cooperation is connected tuber pipe and fan housing, changes the hood under the condition of not destroying flame retardant coating and the difficult wearing and tearing tuber pipe of reuse to save a very big expense, also will shorten greatly to the time limit for a project of changing the hood, accomplish that individual hood changes and has the significance, dismantle convenient not only material saving but also save the time limit for a project.

Description

Bayonet type detachable movably-matched boiler hood

Technical Field

The utility model relates to the technical field of boilers, specifically a movable fit boiler hood can be dismantled to bayonet type.

Background

With the continuous development of industrial technology, the boiler industry produces high-efficiency low-pollution circulating fluidized bed boiler equipment through innovation and research, and the circulating fluidized bed boiler equipment is widely applied to the fields of power stations, industry and the like. The circulating fluidized bed boiler consists of a boiler body and auxiliary equipment: 1. a boiler body: the system mainly comprises a starting burner, an air chamber, an air distribution device, a hearth, a gas-solid separator, a material returning device, a steam drum, a downcomer, a water-cooled wall, a superheater, an economizer, an air preheater and the like. 2. Auxiliary equipment: the device mainly comprises an air feeder, an induced draft fan, a material returning fan, a crusher, a coal feeder, a slag cooler, a dust remover, desulfurization and denitrification equipment, a chimney and the like. Wherein: the boiler hood is the air distribution device of boiler, plays key effect to the safe economic operation of boiler, and the boiler hood is installed on the air distribution plate, and its main function is evenly sent into boiler furnace with the required wind of fluidized fuel, makes the normal fluidization of the furnace charge of boiler inside get up.

The main functions of the boiler hood are as follows: 1. and the bottom material is supported by the air distribution plate together in a cold state and during operation. 2. The air distribution is maintained to be uniform, and the fluidization is stable. 3. Avoiding slag leakage dead zones. 4. Preventing the precipitation of large particles. 5. A reasonable resistance is generated. If a problem occurs in the boiler hood, uneven air distribution occurs, resulting in an increase in the boiler risk factor.

The blast cap is one of the important equipment for reasonably distributing air for the fluidized bed and ensuring circulating boiling combustion, and also is the important equipment for ensuring normal slag removal of the slag cooling chamber, if the blast cap is worn and damaged, the blast cap is difficult to play the role, and has to be shut down for maintenance in serious cases, and the cost for maintenance and raw materials is increased.

The common problems of the existing circulating fluidized bed boiler air cap are as follows:

1. abrasion: the abrasion is generally generated, the abrasion of the blast cap is determined by the operation condition of the blast cap to be inevitable, the main abrasion position of the blast cap is concentrated on the outlet and the top of the outer cover, and the core pipe is made of the same material as the cap head and is generally not easy to abrade. The wear of the blast cap is greatly related to the feeding of raw materials, the raw materials are impure, the hardness at high temperature is low, the wear resistance is poor, and the method is of great importance for the selection and quality inspection of the raw materials for manufacturing the blast cap. The wear of the blast caps is related to installation factors, the more the blast caps are arranged, the more uniform the wind distribution is, but the larger the impact of the airflow of the upstream blast caps on the downstream blast caps is, the higher the design and installation precision is, the certain part of the downstream blast caps is positioned in the jet flow field of the upstream blast caps, and the influence of the impact of the upstream blast caps on the wear of the blast caps can be effectively reduced by proper staggered arrangement.

2. And (3) burning: the burning out is mainly caused by the fact that the coal blockage can not be ventilated and cooled. The inner part of the blast cap is blocked and coked, so that the ventilation of the blast cap is not smooth, the cooling of the cap body is insufficient, the blast cap is subjected to over-temperature carbonization, the hardness is reduced, a better high-temperature-resistant and wear-resistant material is required to be selected when the severe working environment of the blast cap is recognized, and the quality including the casting quality and the welding quality is improved; in addition, the start-stop unit strengthens the overhaul and dredging of the blast cap.

3. The hood falls off: the main reasons for the falling of the blast cap are poor welding quality or improper selection of welding materials, and unreasonable interface design can be achieved. In addition, the primary air chamber is periodically subjected to deslagging in daily operation and maintenance of the blast cap, the primary air quantity is reasonably adjusted, and the fact that the excessive air quantity is prevented is also a key factor for prolonging the service life of the blast cap.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a clearance fit boiler hood can be dismantled to bayonet type to solve the problem that proposes in the above-mentioned background art.

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

a movable fit boiler hood can be dismantled to bayonet type includes:

a fan housing;

one end of the air pipe is inserted into the fan cover and matched with the fan cover;

and the 7-shaped buckle is fixedly installed outside the fan cover and used for connecting and fixing the air pipe and the fan cover.

As a further technical scheme of the utility model, the bayonet socket has been seted up on the fan housing, fixed mounting has the spacing knob with bayonet socket matched with on the tuber pipe.

As a further technical scheme of the utility model, 7 style of calligraphy buckle one end links to each other with the fan housing welding, the other end with the tuber pipe joint.

As a further technical scheme, be equipped with on the spacing knob and 7 style of calligraphy buckle matched with arch.

Compared with the prior art, the beneficial effects of the utility model are that: the air pipe and the fan housing are connected through 7-shaped buckle matching, the air cap is replaced under the condition that the fire-resistant layer is not damaged and the air pipe is not easily abraded by recycling, so that great expense is saved, the construction period for replacing the air cap is greatly shortened, the replacement of individual air caps is significant, and the disassembly is convenient, so that the material is saved, and the construction period is shortened.

Drawings

FIG. 1 is a front view of a bayonet-type removable loose-fitting boiler hood;

FIG. 2 is an exploded view of a bayonet-type detachable and movable fit boiler hood;

FIG. 3 is a cross-sectional view of a bayonet-type detachable clearance fit fan housing in a boiler hood;

FIG. 4 is a cross-sectional view of the air duct in the bayonet-type removable loose-fit boiler hood.

In the figure: 1-fan housing, 2-air duct, 3-7 style of calligraphy buckle, 4-bayonet socket, 5-spacing knob.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention.

The embodiment of the utility model provides a so realize, the movable fit boiler hood can be dismantled to bayonet type as shown in fig. 1 to fig. 4, include:

a fan housing 1;

one end of the air pipe 2 is inserted into the fan cover 1 and matched with the fan cover;

and the 7-shaped buckle 3 is fixedly installed outside the fan housing 1 and used for connecting and fixing the air pipe 2 and the fan housing 1.

The utility model discloses in the during practical application, when tuber pipe 2 and fan housing 1 cooperate, do not weld between fan housing 1 and the tuber pipe 2, fan housing 1 lower extreme adopts bayonet socket 4 formula to seal with tuber pipe 2, is about to get into bayonet socket 4 of fan housing 1 and the spacing knob 5 of tuber pipe 2, uses protruding spacing on tuber pipe 2 as the limit, and 7 style of calligraphy buckles 3 rewelds in fan housing 1 outside, blocks the arch of tuber pipe 2, makes fan housing 1 and tuber pipe 2 relatively fixed, the cooperation be connected; this design structure considers that the main wearing and tearing position of hood generally concentrates on the dustcoat export, the top, and tuber pipe 2 adopts and makes with the same material of fan housing 1, generally difficult wearing and tearing, tuber pipe 2 welding is on the grid plate, the lower extreme of tuber pipe 2 adopts high temperature resistant pouring material to pour and forms, in case fan housing 1 wearing and tearing are serious, can't guarantee reasonable wind distribution, circulation boiling combustion, then need to change the hood, tuber pipe 2 and fan housing 1 need demolish simultaneously this moment, also need demolish as the pouring material of the flame retardant coating that combines with tuber pipe 2 equally, but if only partial hood wearing and tearing are serious, current design hood can't carry out the part and change, the hood structure of this scheme design, when fan housing 1 reaches life or partial wearing and tearing are serious, only need simply polish top welding position and can demolish impaired fan housing 1 easily.

The working principle is as follows: the bayonet 4 to spacing department of the rotatory inlet cowling 1 of tuber pipe 2 is earlier than the producer during implementation, weld 7 style of calligraphy buckles 3 in the fan housing 1 surface again, protruding bayonet 4 of tuber pipe 2 is stopped by 7 style of calligraphy buckles 3 promptly after the welding, tuber pipe 2 and fan housing 1 relatively fixed this moment, but both do not weld, it is as good as with ordinary structure hood installation procedure when the power plant of owner side is installed, weld tuber pipe 2 lower extreme behind the grid plate, pour the material with the flame retardant coating and pour.

Because of the difference of various factors such as the hood amount of wind of different mounted positions, slag quantity, the hood degree of wear that will appear different positions is very different, follow-up when the boiler blowing out overhauls, to the hood that fan housing 1 weares seriously, 7 style of calligraphy buckles 3 in the junction of fan housing 1 can simply polish, can separate impaired fan housing 1 easily with special frock, because of fan housing 1 top design is outer hexagon nut formula structure, can dismantle with customization frock or large-scale spanner, the scene is changed new fan housing 1 and 7 style of calligraphy buckles 3 of welding this moment can, need not to demolish the flame retardant coating, and the cost is saved, the time limit for a project has been practiced thrift.

Of course, the design of hood need consider comprehensively that the cloth wind is even, wearing and tearing are little, do not fall requirements such as sediment, also need adapt to the requirement of boiler in the aspect of energy-conservation, and this design connection structure aims at not destroying the flame retardant coating and change the hood under the difficult condition of wearing and tearing tuber pipe 2 of reuse to save a very big expense, also will shorten greatly to the time limit for a project of changing the hood, accomplish that the change of individual hood has important meaning.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present specification describes embodiments, not every embodiment includes only a single embodiment, and such description is for clarity purposes only, and it is to be understood that all embodiments may be combined as appropriate by one of ordinary skill in the art to form other embodiments as will be apparent to those of skill in the art from the description herein.

Claims (4)

1. The utility model provides a movable fit boiler hood can be dismantled to bayonet type which characterized in that includes:

a fan housing;

one end of the air pipe is inserted into the fan cover and matched with the fan cover;

and the 7-shaped buckle is fixedly installed outside the fan cover and used for connecting and fixing the air pipe and the fan cover.

2. The bayonet-type detachable movable-fit boiler hood according to claim 1, wherein a bayonet is formed in the hood, and a limit knob matched with the bayonet is fixedly mounted on the air pipe.

3. The bayonet-type detachable movable-fit boiler hood according to claim 2, wherein one end of the 7-shaped buckle is connected with the fan cover in a welded mode, and the other end of the 7-shaped buckle is connected with the air pipe in a clamped mode.

4. The bayonet-type detachable and movable fit boiler hood according to claim 3, wherein the limiting knob is provided with a protrusion matched with the 7-shaped buckle.

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