CN217816717U

CN217816717U - Intermediate conical detachable movably-matched boiler hood

Info

Publication number: CN217816717U
Application number: CN202221732127.9U
Authority: CN
Inventors: 唐永阁
Original assignee: Jiangsu Sanhe Furnace Technology Co ltd
Current assignee: Jiangsu Sanhe Furnace Technology Co ltd
Priority date: 2022-07-07
Filing date: 2022-07-07
Publication date: 2022-11-15
Anticipated expiration: 2032-07-07

Abstract

The utility model relates to a middle conical detachable movably matched boiler hood, belonging to the technical field of boilers and comprising a fan cover; the air pipe is externally provided with a conical body matched with the fan cover, and when one end of the air pipe is inserted into the fan cover, the conical body is matched with the fan cover; and one end of the 7-shaped buckle is matched with the conical body, and the other end of the 7-shaped buckle is fixedly connected with the fan cover. The utility model discloses a 7 style of calligraphy buckle and fan housing and tuber pipe cooperation are changing the hood under the condition of not destroying the 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, dismantle convenient both material saving and save the time limit for a project, have important meaning.

Description

Intermediate conical detachable movably-matched boiler hood

Technical Field

The utility model relates to the technical field of boilers, specifically a clearance fit boiler hood can be dismantled to middle toper formula.

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 a blower, 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 together with the air distribution plate in cold state and operation. 2. The air distribution is maintained to be uniform, and the fluidization is stable. 3. Avoiding slag leakage dead zone. 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 air flow of the upstream blast caps on the downstream blast caps is, the design and installation precision causes that a certain part of the downstream blast caps are positioned in the jet flow field of the upstream blast caps, and the proper staggered arrangement can effectively reduce the influence of the impact of the upstream blast caps on the wear of the blast caps.

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 reason for the falling of the blast cap is that the welding quality is poor or the welding material is not properly selected, and the interface design can be unreasonable due to energy. In addition, the primary air chamber is periodically subjected to slag discharge in daily operation and maintenance of the blast cap, the primary air quantity is reasonably adjusted, and the prevention of overlarge air quantity 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 middle toper formula 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:

a removable clearance fit boiler hood can be dismantled to middle toper formula includes:

a fan housing;

the air pipe is externally provided with a conical body matched with the fan cover, and when one end of the air pipe is inserted into the fan cover, the conical body is matched with the fan cover;

and one end of the 7-shaped buckle is matched with the conical body, and the other end of the 7-shaped buckle is fixedly connected with the fan cover.

As a further technical scheme of the utility model, the fan housing is equipped with the bell mouth with cone matched with.

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

As the utility model discloses a further technical scheme again, 7 style of calligraphy buckle is provided with a plurality ofly, and is a plurality of 7 style of calligraphy buckle evenly distributed is in the fan housing outside.

Compared with the prior art, the beneficial effects of the utility model are that: through 7 style of calligraphy buckles and fan housing and tuber pipe cooperation, change 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, dismantle convenient both material saving and time limit for a project again, have important meaning.

Drawings

FIG. 1 is an exploded view of a middle cone type detachable and movable fitted boiler hood;

FIG. 2 is a schematic structural view of a middle cone type detachable movably-matched boiler hood;

FIG. 3 is a cross-sectional view of the fan housing in the intermediate cone type detachable clearance fit boiler hood.

In the figure: 1-fan housing, 2-air duct, 3-7 style of calligraphy buckle.

Detailed Description

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

The embodiment of the utility model provides a realize like this, as shown in figure 1 to figure 3 the middle toper form can dismantle clearance fit boiler hood, include:

a fan housing 1;

the outer part of the air pipe 2 is provided with a conical body matched with the fan cover 1, and when one end of the air pipe 2 is inserted into the fan cover 1, the conical body is matched with the fan cover 1;

and one end of the 7-shaped buckle 3 is matched with the conical body, and the other end of the 7-shaped buckle is fixedly connected with the fan cover 1.

The utility model discloses in the during practical application, fan housing 1 is equipped with the bell mouth with cone matched with, be prior to the cooperation butt joint of two places cone with fan housing 1 with tuber pipe 2 of manufacture factory, weld 7 style of calligraphy buckle 3 in fan housing 1 surface again, 2 bottoms of tuber pipe are lived by 3 pockets of 7 style of calligraphy buckle promptly after the welding, tuber pipe 2 and fan housing 1 can 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 installs, weld 2 lower extremes of tuber pipe behind the air distribution plate, pour with flame retardant coating pouring material; due to the fact that different factors such as blast cap air quantity and slag quantity at different installation positions are different, the blast cap abrasion degrees at different positions are greatly different, when the boiler is shut down and overhauled, the blast cap with the seriously abraded fan cover 1 can be easily polished at the joint of the fan cover 1 through the 7-shaped buckle 3, the damaged fan cover 1 can be easily separated, the fan cover 1 can be replaced on site, the 7-shaped buckle 3 is welded, the fireproof layer does not need to be removed, cost is saved, and the construction period is shortened; further, 7 style of calligraphy buckle 3 is provided with a plurality ofly, and is a plurality of 7 style of calligraphy buckle 3 evenly distributed is in the fan housing 1 outside, and overall structure is more stable.

The working principle is as follows: the middle conical detachable movable-fit boiler hood consists of three parts: the fan cover comprises a fan cover 1 and an air pipe 2,7-shaped buckle 3, wherein the fan cover 1 and the air pipe 2 are not welded, the lower end of the fan cover 1 and the middle of the air pipe 2 are sealed in a conical matching mode, and the 7-shaped buckle is welded outside the fan cover to clamp the air pipe, so that the fan cover and the air pipe are connected in a matching mode; this kind of design structure considers 1 main wearing and tearing positions of hood to generally concentrate 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 the high temperature resistant castable to pour and forms, in case 1 wearing and tearing of fan housing are serious, can't guarantee reasonable grid, circulation boiling combustion, then need to change hood 1, 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, nevertheless if only 1 wearing and tearing of partial hood are serious, existing design hood 1 can't carry out the part and change, the utility model discloses the design hood 1 structure of scheme, when fan housing 1 reaches life or partial wearing and tearing are serious, only need simply polish top welding position and can demolish impaired 1 easily.

Certainly, the design of hood needs the comprehensive consideration cloth wind even, wearing and tearing are little, do not fall requirements such as sediment, also need to adapt to the requirement of boiler in the aspect of energy-conservation, and this patent design connection structure aims at not destroying the flame retardant coating and changes the hood under the difficult wearing and tearing tuber pipe of reuse's the condition 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 individuation hood has important meaning, dismantles the convenience and not only save material but also save the time limit for a project.

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 description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

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

a fan housing;

7 style of calligraphy buckle, one end with the conical body cooperatees, the other end and fan housing fixed connection.

2. The intermediate cone type detachable and movable fit boiler hood according to claim 1, wherein the hood is provided with a cone opening matched with the cone body.

3. The intermediate tapered detachable and movable fit boiler hood according to claim 1, wherein the 7-shaped buckle is connected with the hood by welding.

4. The middle conical detachable movable fit boiler hood according to claim 3, wherein a plurality of 7-shaped buckles are arranged, and the 7-shaped buckles are evenly distributed on the outer side of the fan cover.