CN215951385U - Circulating fluidized bed boiler - Google Patents

Abstract

The utility model belongs to the technical field of boilers, in particular to a circulating fluidized bed boiler, which comprises an air pipe, a limiting ring and a bell-shaped hood head, wherein the air pipe, the limiting ring and the bell-shaped hood head are included, the top end of the air pipe is in an open design, a compression spring is arranged in the air pipe, a channel is arranged on the outer wall of the air pipe in a penetrating way, a sealing gasket is arranged on the outer wall of the channel, the limiting ring is movably arranged on the air pipe, when the bell-shaped hood head is installed, a fixing block arranged on the hood head slides along the channel, so that the hood head enters an inner cavity of the air pipe, the limiting work of the hood head can be completed by rotating the limiting ring to enable a limiting groove to be in contact with the top end of the fixing block, the fixing block is limited by the limiting groove, the hood head is difficult to jack up to cause falling off, the connection stability of the air pipe and the bell-shaped hood head is more reliable, and the installation and the disassembly are more convenient, the requirement of the rapid air distribution device is met.

Description

Circulating fluidized bed boiler

Technical Field

The utility model belongs to the technical field of boilers, and particularly relates to a circulating fluidized bed boiler.

Background

The technology of the circulating fluidized bed boiler is rapidly developed at present, and a large number of air distribution devices are used for installing the air distribution plates of the boiler. The circulating fluidized bed boiler organizes the combustion of coal based on the principle of circulating fluidization, takes the circulating combustion of carrying a large amount of high-temperature solid particles as an important characteristic, and the primary air current from the furnace bottom air distribution device must have enough speed, strength and rigidity, and generates strong disturbance while supporting the solid particles so as to ensure that bed materials are always in a fluidized state and organize the normal combustion.

There are many common air distribution devices (i.e. hoods) in the prior art, such as 7-shaped hoods, welded bell-jar type hoods, mushroom type hoods, etc. The 7-shaped hood has the problems of serious self abrasion and serious slag leakage of the air distribution plate, the welded bell jar hood has good effect of preventing the slag leakage of the air distribution plate, and the problem that the accumulated slag in the hood hole is not easy to clean after long-time operation or leakage of a water cooled wall of a hearth exists.

Chinese patent, publication No. CN204084349U, discloses a circulating fluidized bed boiler, comprising: the wind distribution plate is provided with a mounting hole, one end of the wind pipe is inserted into the mounting hole and is fixedly connected with the wind distribution plate, the other end of the wind pipe is provided with a supporting plate at a position, close to the end part of the wind pipe, of the pipe body, the wind cap head is in a bell-cap-shaped structural design, the wind cap head is provided with an annular cap body, one end of the annular cap body is provided with an arc-shaped seal, the other end of the annular cap body is an opening in an open type structural design, the wind pipe is inserted into the opening and is arranged at intervals with the arc-shaped seal, and the opening is connected with the supporting plate in an air-tight abutting mode; it adopts bell-shaped hood head, thereby its easy to assemble with dismantle convenient clearance, but only adopt the gas tightness to offset between hood head itself and the tuber pipe to be connected, connection stability is not high for there is the risk that drops in the hood head.

Chinese patent, the grant publication number is CN205227303U and authorizes and discloses a circulating fluidized bed boiler, belongs to boiler technical field, and this utility model's technical scheme is: the utility model provides a circulating fluidized bed boiler, includes the air distribution device, the air distribution device includes air distribution plate, tuber pipe and bell hood head, the one end fixed connection of tuber pipe is on the air distribution plate, another pot head of tuber pipe is equipped with bell hood head, bell hood has seted up a plurality of ventholes overhead, the tuber pipe is close to bell hood head's one end and has seted up L shape fixed slot, L shape fixed slot includes the insertion section that sets up along the tuber pipe axial and the canned paragraph that sets up along tuber pipe circumference, be provided with the fixed block on bell hood head's the inner wall, the fixed block can slide in and get into the canned paragraph along the insertion section, only realizes being connected through the sliding fit who utilizes L type fixed slot and fixed block between this practical hood head and the tuber pipe, leads to the connection stability not high equally.

SUMMERY OF THE UTILITY MODEL

This section is for the purpose of summarizing some aspects of embodiments of the utility model and to briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section as well as in the abstract of the specification and the title of the application to avoid obscuring the purpose of this section, the abstract of the specification and the title of the application, and such simplifications or omissions are not intended to limit the scope of the utility model.

The present invention has been made in view of the above problems.

To solve the above technical problem, according to an aspect of the present invention, the present invention provides the following technical solutions: the utility model provides a circulating fluidized bed boiler, includes tuber pipe, spacing ring and bell-shaped hood head, the top of tuber pipe is the opening design, just be provided with compression spring in the tuber pipe, the outer wall of tuber pipe runs through and has seted up the passageway, just the outer wall of passageway is provided with sealed the pad, the activity of tuber pipe is provided with the spacing ring, the outer wall of spacing ring runs through and has seted up the spacing groove, just the spout has been seted up to the inner wall of spacing ring, the top of tuber pipe can be dismantled and be provided with bell-shaped hood head, just the fixed block is installed through the bolt to the outer wall of bell-shaped hood head.

In a preferred embodiment of the present invention, the gasket is made of a rubber material.

As a preferred technical scheme of the utility model, the outer wall of the air pipe is integrally formed with an external thread groove, and the bottom end of the air pipe is connected with an air distribution pipe.

As a preferred technical scheme of the utility model, the inner wall of the limiting ring is provided with an internal thread groove matched with the external thread groove, and the outer wall of the limiting ring is provided with an anti-skid groove.

As a preferable technical solution of the present invention, the fixing block is in interference fit with the channel.

As a preferable technical scheme of the utility model, the outer wall of the bell-shaped hood head is provided with an air outlet hole in a penetrating way.

Compared with the prior art, the utility model has the beneficial effects that:

(1) the air pipe, the limiting ring, the bell-shaped hood head and the like of the circulating fluidized bed boiler are connected in sequence, so that the circulating fluidized bed boiler is simple in structure, low in investment cost and suitable for wide popularization and use.

(2) When installing bell-shaped hood head, the fixed block that sets up on this hood head slides along the passageway, make the hood head get into to the tuber pipe inner chamber after, rotatory spacing ring makes spacing groove and fixed block top contact can accomplish the spacing work to this kind of hood head, the fixed block makes the hood head hardly leaded to droing by the jack-up after receiving the spacing groove restriction, so the stability of being connected of tuber pipe and bell-shaped hood head is more reliable, it is more convenient and fast when installation and dismantlement, satisfy the demand of clear up cloth wind device fast.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the present invention will be described in detail with reference to the accompanying drawings and detailed embodiments, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise. Wherein:

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the connection structure of the air duct and the bell-shaped hood head according to the present invention;

FIG. 3 is a top view of the air duct structure of the present invention.

In the figure: 100. an air duct; 110. a compression spring; 120. a channel; 121. a gasket; 130. an outer thread groove; 200. a limiting ring; 201. an anti-slip groove; 210. a limiting groove; 220. a chute; 300. a bell-shaped bonnet head; 310. a fixed block; 320. and an air outlet.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways than those specifically described herein, and it will be apparent to those of ordinary skill in the art that the present invention may be practiced without departing from the spirit and scope of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.

Next, the present invention will be described in detail with reference to the drawings, wherein for convenience of illustration, the cross-sectional view of the device structure is not enlarged partially according to the general scale, and the drawings are only examples, which should not limit the scope of the present invention. In addition, the three-dimensional dimensions of length, width and depth should be included in the actual fabrication.

In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The utility model provides a circulating fluidized bed boiler, which has the advantages of simple structure, low investment cost, more reliable connection stability of an air pipe and a bell-shaped hood head, convenience and rapidness in installation and disassembly, capability of meeting the requirement of rapidly cleaning an air distribution device, suitability for wide popularization and use, and reference to fig. 1, wherein the air pipe 100, a limiting ring 200 and the bell-shaped hood head 300 are included;

referring to fig. 1-2-3, the top end of the air duct 100 is open, a compression spring 110 is disposed in the air duct 100, a channel 120 is formed through the outer wall of the air duct 100, and the outer wall of the channel 120 is provided with a sealing gasket 121, the air pipe 100 is movably provided with a limit ring 200, the outer wall of the limit ring 200 is provided with a limit groove 210 in a penetrating way, the inner wall of the limit ring 200 is provided with a sliding groove 220, the top end of the air pipe 100 is detachably provided with a bell-shaped air cap head 300, and the outer wall of the bell-shaped blast cap head 300 is provided with a fixing block 310 by bolts, the sealing gasket 121 is made of rubber material, the outer wall of the blast pipe 100 is integrally formed with an external thread groove 130, and the bottom end of the air pipe 100 is connected with an air distribution pipe, the inner wall of the limit ring 200 is provided with an internal thread groove matched with the external thread groove 130, and the outer wall of the spacing ring 200 is provided with an anti-slip groove 201, the fixing block 310 is in interference fit with the channel 120, and the outer wall of the bell-shaped blast cap head 300 is provided with an air outlet 320 in a penetrating way.

The working principle and the using process of the utility model are as follows: when the fixing block 310 of the bell-shaped wind cap head 300 is slid along the channel 120 when the bell-shaped wind cap head 300 is installed, the person skilled in the art needs to rotate the limiting ring 200 under the support of the external thread groove 130 before the bell-shaped wind cap head 300 is slid, so that the sliding groove 220 on the inner wall of the stop collar 200 is aligned with the channel 120, and the fixing block 310 on the bell-shaped blast cap head 300 can smoothly pass through the stop collar 200 when sliding on the channel 120, during the sliding process, the bottom end of the bell-shaped hood head 300 will come into contact with the compression spring 110 inside the air duct 100, and continues to be applied with the force of the compression spring 110 until the fixing block 310 slides to the bottom end of the passage 120, and rotates the stop ring 200 again, so that the stop groove 210 is in contact with the top end of the fixing block 310, namely, the installation work of the bell-shaped blast cap head 300 is completed, and in the process, the limit spring 110 enables the top end of the fixing block 310 to be connected with the limit groove 210 more stably through the structural characteristics of the limit spring;

when the person skilled in the art needs to disassemble the bell-shaped blast cap head 300, the retainer ring 200 is rotated to align the sliding grooves 220 on the inner wall of the retainer ring 200 with the channels 120, and then the bell-shaped blast cap head 300 can be taken out.

While the utility model has been described above with reference to an embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the utility model. In particular, the various features of the disclosed embodiments of the utility model may be used in any combination, provided that no structural conflict exists, and the combinations are not exhaustively described in this specification merely for the sake of brevity and resource conservation. Therefore, it is intended that the utility model not be limited to the particular embodiments disclosed, but that the utility model will include all embodiments falling within the scope of the appended claims.

Claims (6)

1. A circulating fluidized bed boiler comprising an air duct (100), a stop ring (200) and a bell head (300), characterized in that: the top of tuber pipe (100) is the opening design, just be provided with compression spring (110) in tuber pipe (100), the outer wall of tuber pipe (100) runs through and has seted up passageway (120), just the outer wall of passageway (120) is provided with sealed pad (121), the activity of tuber pipe (100) is provided with spacing ring (200), spacing groove (210) have been seted up in the outer wall of spacing ring (200) runs through, just spout (220) have been seted up to the inner wall of spacing ring (200), the top of tuber pipe (100) can be dismantled and be provided with bell-shaped hood head (300), just fixed block (310) are installed through the bolt to the outer wall of bell-shaped hood head (300).

2. A circulating fluidized bed boiler according to claim 1, characterized in that: the sealing gasket (121) is made of rubber materials.

3. A circulating fluidized bed boiler according to claim 1, characterized in that: the outer wall of the air pipe (100) is integrally formed with an external thread groove (130), and the bottom end of the air pipe (100) is connected with an air distribution pipe.

4. A circulating fluidized bed boiler according to claim 3, characterized in that: the inner wall of the limiting ring (200) is provided with an internal thread groove matched with the external thread groove (130), and the outer wall of the limiting ring (200) is provided with an anti-skidding groove (201).

5. A circulating fluidized bed boiler according to claim 1, characterized in that: the fixing block (310) is in interference fit with the channel (120).

6. A circulating fluidized bed boiler according to claim 1, characterized in that: the outer wall of the bell-shaped hood head (300) is provided with an air outlet hole (320) in a penetrating way.

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