CN214891147U

CN214891147U - Anti-deformation and anti-leakage device for slag discharge pipe of boiler

Info

Publication number: CN214891147U
Application number: CN202120659299.7U
Authority: CN
Inventors: 刘振秋; 王玉文; 王楚军; 王雷; 赵旭
Original assignee: Zhalantun Thermal Power Plant Of Hulunbeier Antai Thermal Power Co ltd
Current assignee: Zhalantun Thermal Power Plant Of Hulunbeier Antai Thermal Power Co ltd
Priority date: 2021-03-31
Filing date: 2021-03-31
Publication date: 2021-11-26
Anticipated expiration: 2031-03-31

Abstract

The utility model discloses a deformation-preventing and material-leakage-preventing device for a boiler deslagging pipe, which comprises an air distribution plate, wherein the air distribution plate is arranged in a hearth and is provided with a first through hole, and the deslagging pipe is arranged in the first through hole; and the contraction connection unit is arranged at the first through hole and comprises a contraction assembly and a clamping piece connected with the contraction assembly. The utility model discloses do not adopt traditional welding mode to connect scum pipe and grid plate, its simple structure convenient to use only needs to put into the scum pipe and just can block fast in the shrink coupling assembling, and block department has the multilayer and presss from both sides the structure of folding, can not produce the crackle because of long-term use to avoid leaking the problem of material.

Description

Anti-deformation and anti-leakage device for slag discharge pipe of boiler

Technical Field

The utility model relates to a fluidized bed equipment technical field, especially a boiler deslagging pipe shape leak protection material device of preapring for an unfavorable turn of events.

Background

The slag discharging device is an important component in a fluidized bed boiler ash slag system, and common slag discharging forms comprise front slag discharging, rear slag discharging and bottom slag discharging. The slag discharging forms have advantages and disadvantages, for medium and small units, bottom slag discharging is mostly adopted, the design of the slag discharging pipeline for the bottom slag discharging in the prior art is too simple, and detection and emergency treatment means are lacked, and in the ignition process of a boiler, because the slag discharging pipeline is exposed in high-temperature flue gas for a long time, if the material of the slag discharging pipe is not properly treated in the production process, the phenomena of burning cracking and the like are easy to occur; during long-term high-load operation and during the slag discharging process of the boiler, because high-temperature ash residues are always remained in the slag discharging pipe, the temperature of the fluidized bed is too high, the slag discharging pipe and the fixed welding bead of the air distribution plate can generate cracks and leak materials into an air chamber, the primary air resistance is large, the burning deformation of the pipe opening is caused, the discharging is not smooth, the non-stop is easily caused, the safety production is threatened, and the damaged slag discharging pipe is difficult to replace due to the problems of shape change and the like. To the above problems, a deformation-preventing and material-leakage-preventing device for the boiler deslagging pipe needs to be designed to avoid the deslagging pipe from being burnt and cracked at the welding position of the air distribution plate to deform, so that the problem of material leakage is avoided.

SUMMERY OF THE UTILITY MODEL

This section is for the purpose of summarizing some aspects of embodiments of the invention and to briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and 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 invention.

The present invention has been made in view of the above and/or other problems occurring in the conventional boiler slag discharge pipe.

Therefore, the utility model aims to solve the problem that the welding position of the existing fluidized bed slag discharging pipe is easy to be burnt and cracked and deformed under the long-term high-load operation, thereby leading to material leakage.

In order to solve the technical problem, the utility model provides a following technical scheme: the deformation-preventing and material-leakage-preventing device for the boiler deslagging pipe comprises an air distribution plate, a first guide rail and a second guide rail, wherein the air distribution plate is arranged in a hearth and is provided with a first through hole, and the deslagging pipe is arranged in the first through hole; and the contraction connection unit is arranged at the first through hole and comprises a contraction assembly and a clamping piece connected with the contraction assembly.

As a boiler deslagging pipe shape leak protection material device's an optimal selection scheme of preapring for an unfavorable turn of events, wherein: the contraction assembly comprises a fixed seat, a first transmission piece, a second transmission piece and a third transmission piece, wherein the fixed seat is of a circular ring structure.

As a boiler deslagging pipe shape leak protection material device's an optimal selection scheme of preapring for an unfavorable turn of events, wherein: the fixing seat is provided with a first annular groove, the first transmission piece is of an annular internal gear structure, and the first transmission piece is installed in the first annular groove.

As a boiler deslagging pipe shape leak protection material device's an optimal selection scheme of preapring for an unfavorable turn of events, wherein: still be equipped with a plurality of hinge post in the first annular groove, the second driving medium is the gear structure, the second driving medium with the cooperation of hinge post is connected.

As a boiler deslagging pipe shape leak protection material device's an optimal selection scheme of preapring for an unfavorable turn of events, wherein: the outer edge of the fixing seat is also provided with a movable groove and a plurality of first grooves, the third transmission piece is installed in the first grooves, the part, located in the first grooves, of the third transmission piece is smooth, and the other parts of the third transmission piece are of a rack structure.

As a boiler deslagging pipe shape leak protection material device's an optimal selection scheme of preapring for an unfavorable turn of events, wherein: the side of the first transmission piece is provided with a movable head, and the movable head is arranged in the movable groove.

As a boiler deslagging pipe shape leak protection material device's an optimal selection scheme of preapring for an unfavorable turn of events, wherein: the height of the second transmission piece is larger than that of the first transmission piece, the first transmission piece is meshed with the second transmission piece, and the third transmission piece is meshed with the second transmission piece.

As a boiler deslagging pipe shape leak protection material device's an optimal selection scheme of preapring for an unfavorable turn of events, wherein: the clamping piece is connected with the third transmission piece, one end of the clamping piece is of a fan-shaped block structure, and a fan-shaped boss is further arranged on the clamping piece.

As a boiler deslagging pipe shape leak protection material device's an optimal selection scheme of preapring for an unfavorable turn of events, wherein: one end of the slag discharging pipe is provided with a second groove, the tail end of the second groove is further provided with an annular round table, the annular round table faces towards one side of the slag discharging pipe and is provided with a second annular groove, and the second annular groove is connected with the fan-shaped boss in a matched mode.

As a boiler deslagging pipe shape leak protection material device's an optimal selection scheme of preapring for an unfavorable turn of events, wherein: the outer diameter of the annular circular truncated cone is larger than the outer diameter of the slag discharge pipe and not larger than the inner diameter of the fixed seat.

The utility model discloses beneficial effect does: the utility model discloses do not adopt traditional welding mode to connect scum pipe and grid plate, its simple structure convenient to use only needs to put into the scum pipe and just can block fast in the shrink coupling assembling, and block department has the multilayer and presss from both sides the structure of folding, can not produce the crackle because of long-term the use to avoid leaking the problem of expecting.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments will be briefly introduced below, 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 that other drawings can be obtained according to these drawings without inventive labor. Wherein:

FIG. 1 is an overall assembly structure diagram of a deformation-preventing and material-leakage-preventing device of a boiler slag discharging pipe.

Fig. 2 is a structure diagram of a shrinkage connection unit of the deformation and material leakage preventing device of the boiler slag discharging pipe.

Fig. 3 is a working principle diagram of the deformation-preventing and material-leakage-preventing device of the boiler slag discharging pipe.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, embodiments accompanying the present invention are described in detail below with reference to the accompanying drawings.

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 implemented in other ways different from the specific details set forth herein, and one skilled in the art may similarly generalize the present invention without departing from the spirit of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.

Furthermore, the references herein to "one embodiment" or "an embodiment" refer to a particular feature, structure, or characteristic that may be included in at least one implementation of the invention. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.

Example 1

Referring to fig. 1 to 3, in order to provide a first embodiment of the present invention, the embodiment provides a deformation and leakage prevention device for a boiler slag discharging pipe, the deformation and leakage prevention device for a boiler slag discharging pipe comprises an air distribution plate 100, the air distribution plate 100 is arranged in a furnace chamber a, a first through hole 100a is arranged on the air distribution plate 100, and a slag discharging pipe 101 is arranged in the first through hole 100 a; and a contraction connection unit 200 installed at the first through hole 100a, including a contraction member 201, and an engaging member 202 connected to the contraction member 201.

The air distribution plate 100 is installed at the bottom of the hearth A, the slag discharge pipe 101 is installed in the middle of the air distribution plate 100, and air is blown into the hearth A through a fluidization hood on the air distribution plate 100, so that coal in a powder state is fluidized in the hearth A to form a fluidized bed, the coal is further combusted in the hearth A, ash generated by combustion is deposited and flows under the action of wind power, and finally the ash is discharged from the slag discharge pipe 101. The traditional fluidized bed boiler generally adopts a heat-resistant steel pipe to be directly welded with the air distribution plate 100, and the problems of downward welding and deformation of the slag discharging pipe frequently occur in the production process. The utility model discloses, through the connected mode who changes scum pipe 101 and air distributor 100, adopt shrink coupling unit 200 to prevent that scum pipe 101 from warping and leaking.

Specifically, the retraction assembly 201 includes a fixed base 201a, a first transmission member 201b, a second transmission member 201c, and a third transmission member 201 d. The fixed seat 201a is in a circular ring structure, a first annular groove 201a-1 is formed in the fixed seat 201a, the first transmission member 201b is in an annular internal gear structure, and the first transmission member 201b is installed in the first annular groove 201 a-1. The outer wall of the first transmission piece 201b is attached to the inner wall of the first annular groove 201a-1, and the first transmission piece 201b can rotate in the first annular groove 201 a-1.

Further, a plurality of hinge posts 201a-2 are further disposed in the first annular groove 201a-1, the second transmission member 201c is of a gear structure, the second transmission member 201c is connected with the hinge posts 201a-2 in a matching manner, the first transmission member 201b is engaged with the second transmission member 201c, and the first transmission member 201b drives the second transmission member 201c to rotate together when rotating.

Still further, the outer edge of the fixed seat 201a is further provided with a movable groove 201a-3 and a plurality of first grooves 201a-4, the third transmission member 201d is installed in the first grooves 201a-4, the portion of the third transmission member 201d located in the first grooves 201a-4 is smooth, and the other portion is in a rack structure. The movable grooves 201a-3 are all oriented towards the axis of the fixed seat 201a, and the height of the second transmission piece 201c is larger than that of the first transmission piece 201b, so that the third transmission piece 201d can be meshed with the second transmission piece 201 c.

In this embodiment, the side of the first transmission member 201b is provided with a movable head 201b-1, the movable head 201b-1 is installed in the movable groove 201a-3, the first transmission member 201b can be driven to rotate by shifting the movable head 201b-1, and the rotation range is limited only in the movable groove 201 a-3. The first transmission member 201b drives the second transmission member 201c to rotate, and further drives the third transmission member 201d to move toward the axis of the fixing base 201a, so as to clamp and fasten the sidewall of the slag discharging pipe 101.

Example 2

Referring to fig. 2 and 3, a second embodiment of the present invention is based on the previous embodiment, and is different from the first embodiment in that: only by clamping and fastening, the slag discharging pipe 101 inevitably slides, so the slag discharging pipe is changed, and the clamping piece 202 is also arranged on the contraction assembly 201.

Specifically, the engaging member 202 is connected to the third transmission member 201d, one end of the engaging member 202 is a fan-shaped block structure, and a fan-shaped boss 202a is further disposed on the engaging member 202. One end of the slag discharging pipe 101 is provided with a second groove 101a, the tail end of the second groove 101a is also provided with an annular circular truncated cone 101b, one side of the annular circular truncated cone 101b, which faces the slag discharging pipe 101, is provided with a second annular groove 101b-1, and the second annular groove 101b-1 is connected with the fan-shaped boss 202a in a matching mode. The outer diameter of the annular circular truncated cone 101b is larger than that of the slag discharge pipe 101 and not larger than the inner diameter of the fixed seat 201 a.

In this embodiment, the shrinkage connection unit 200 is fixed on the air distribution plate 100 in advance, one end of the slag discharge pipe 101, which is provided with an annular circular truncated cone 101b, passes through the fixed seat 201a upwards, and the passing length is controlled at the lowest end of the second groove 101a and does not pass through the first through hole 100 a; then the movable head 201b-1 is shifted to enable the clamping piece 202 to contract inwards and clamp the slag discharge pipe, at the moment, the position of the fan-shaped boss 202a corresponds to that of the second annular groove 101b-1, then the slag discharge pipe 101 is pulled downwards, and the fan-shaped boss 202a and the clamping piece 202 are buckled together. Similarly, if the slag discharging pipe 101 is damaged due to failure, the movable head 201b-1 is pushed up after the slag discharging pipe 101 is jacked up, so that the clamping piece 202 is completely expanded, the slag discharging pipe 101 can be pulled out, and the method is simple and convenient.

It is important to note that the construction and arrangement of the present application as shown in the various exemplary embodiments is illustrative only. Although only a few embodiments have been described in detail in this disclosure, those skilled in the art who review this disclosure will readily appreciate that many modifications are possible (e.g., variations in sizes, dimensions, structures, shapes and proportions of the various elements, values of parameters (e.g., temperatures, pressures, etc.), mounting arrangements, use of materials, colors, orientations, etc.) without materially departing from the novel teachings and advantages of the subject matter recited in this application. For example, elements shown as integrally formed may be constructed of multiple parts or elements, the position of elements may be reversed or otherwise varied, and the nature or number of discrete elements or positions may be altered or varied. Accordingly, all such modifications are intended to be included within the scope of this invention. The order or sequence of any process or method steps may be varied or re-sequenced according to alternative embodiments. In the claims, any means-plus-function clause is intended to cover the structures described herein as performing the recited function and not only structural equivalents but also equivalent structures. Other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments without departing from the scope of the present inventions. Therefore, the present invention is not limited to a particular embodiment, but extends to various modifications that nevertheless fall within the scope of the appended claims.

Moreover, in an effort to provide a concise description of the exemplary embodiments, all features of an actual implementation may not be described (i.e., those unrelated to the presently contemplated best mode of carrying out the invention, or those unrelated to enabling the invention).

It should be appreciated that in the development of any such actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort might be complex and time consuming, but would nevertheless be a routine undertaking of design, fabrication, and manufacture for those of ordinary skill having the benefit of this disclosure, without undue experimentation.

It should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention can be modified or replaced with equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the scope of the claims of the present invention.

Claims

1. The utility model provides a boiler deslagging pipe shape leak protection material device of preapring for an unfavorable turn of events which characterized in that: comprises the steps of (a) preparing a mixture of a plurality of raw materials,

the air distribution plate (100) is arranged in the hearth (A), a first through hole (100a) is formed in the air distribution plate (100), and a slag discharge pipe (101) is installed in the first through hole (100 a); and the number of the first and second groups,

the contraction connection unit (200) is installed at the first through hole (100a) and comprises a contraction assembly (201) and an engaging piece (202) connected with the contraction assembly (201).

2. The deformation and leakage preventing device for the boiler deslagging pipe of claim 1, which is characterized in that: the contraction assembly (201) comprises a fixed seat (201a), a first transmission piece (201b), a second transmission piece (201c) and a third transmission piece (201d), and the fixed seat (201a) is of a circular ring structure.

3. The deformation and leakage preventing device for the boiler deslagging pipe of claim 2, which is characterized in that: the fixed seat (201a) is provided with a first annular groove (201a-1), the first transmission piece (201b) is of an annular internal gear structure, and the first transmission piece (201b) is installed in the first annular groove (201 a-1).

4. The deformation and leakage preventing device for the boiler deslagging pipe of claim 3, which is characterized in that: a plurality of hinged columns (201a-2) are further arranged in the first annular groove (201a-1), the second transmission piece (201c) is of a gear structure, and the second transmission piece (201c) is connected with the hinged columns (201a-2) in a matched mode.

5. The deformation and leakage preventing device for the boiler deslagging pipe of claim 4, which is characterized in that: the outer edge of the fixed seat (201a) is further provided with a movable groove (201a-3) and a plurality of first grooves (201a-4), the third transmission piece (201d) is installed in the first grooves (201a-4), the part, located in the first grooves (201a-4), of the third transmission piece (201d) is smooth, and the other part of the third transmission piece is of a rack structure.

6. The deformation and leakage preventing device for the boiler deslagging pipe of claim 5, which is characterized in that: a movable head (201b-1) is arranged on the side edge of the first transmission piece (201b), and the movable head (201b-1) is installed in the movable groove (201 a-3).

7. The boiler deslagging pipe deformation and leakage prevention device as set forth in any of claims 2-6, characterized in that: the height of the second transmission piece (201c) is larger than that of the first transmission piece (201b), the first transmission piece (201b) is meshed with the second transmission piece (201c), and the third transmission piece (201d) is meshed with the second transmission piece (201 c).

8. The deformation and leakage preventing device for the boiler deslagging pipe of claim 7, which is characterized in that: the clamping piece (202) is connected with the third transmission piece (201d), one end of the clamping piece (202) is of a fan-shaped block structure, and a fan-shaped boss (202a) is further arranged on the clamping piece (202).

9. The deformation and leakage preventing device for the boiler slagging pipe of claim 8, which is characterized in that: arrange sediment pipe (101) one end and be equipped with second recess (101a), the end of second recess (101a) still is equipped with annular round platform (101b), annular round platform (101b) orientation one side of arranging sediment pipe (101) is equipped with second annular groove (101b-1), second annular groove (101b-1) with fan-shaped boss (202a) cooperation is connected.

10. The deformation and leakage preventing device for the boiler slagging pipe of claim 9, which is characterized in that: the outer diameter of the annular circular truncated cone (101b) is larger than that of the slag discharge pipe (101) and not larger than the inner diameter of the fixed seat (201 a).