CN214223089U - Boiler slag discharge port structure - Google Patents
Boiler slag discharge port structure Download PDFInfo
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- CN214223089U CN214223089U CN202022940601.4U CN202022940601U CN214223089U CN 214223089 U CN214223089 U CN 214223089U CN 202022940601 U CN202022940601 U CN 202022940601U CN 214223089 U CN214223089 U CN 214223089U
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Abstract
The utility model discloses a boiler slag notch structure of arranging, include: the military cap is arranged on the air distribution plate and is positioned in the hearth; the slag discharging vertical pipe is arranged below the air distribution plate, and the top end of the slag discharging vertical pipe is connected with the bottom end opening of the military cap; the upper end of the metal expansion joint is connected with the bottom end of the slag discharging vertical pipe; the lower sediment return bend includes: the connector pipe section is vertically arranged and is connected with the bottom end of the metal expansion joint; the inclined pipe section is connected with the interface pipe section; the first anti-abrasion sleeve is sleeved outside the inclined pipe section and at least wraps the arc-shaped bottom surface of the inclined pipe section. The utility model discloses can solve current lower slag pipe because of receiving the slag to erode and cause row's slag pipe wearing and tearing, have the technical problem of the great potential safety hazard of boiler explosion.
Description
Technical Field
The utility model relates to a boiler slag discharge port structure belongs to boiler row sediment technical field.
Background
In the process of boiler work, can produce a large amount of waste residues, under the usual condition, in fluidized bed boiler, the waste residue need be unloaded through lower slag pipe, and lower slag pipe is the welding usually on the grid plate, because be mingled with the bold waste residue in the waste residue to the temperature is higher, so wash slag pipe department water-cooled wall down easily when unloading, cause water-cooled wall wearing and tearing, there is the great potential safety hazard of boiler explosion.
SUMMERY OF THE UTILITY MODEL
Based on the above, the utility model provides a boiler deslagging port structure to solve present lower slag pipe and cause the water-cooled wall wearing and tearing because of receiving the slag to erode, have the technical problem of the great potential safety hazard of boiler booster.
The technical scheme of the utility model is that: a boiler slagging port structure, wherein the structure comprises:
the military cap is arranged on the air distribution plate and is positioned in the hearth;
the slag discharging vertical pipe is arranged below the air distribution plate, and the top end of the slag discharging vertical pipe is connected with the bottom end opening of the military cap;
the upper end of the metal expansion joint is connected with the bottom end of the slag discharging vertical pipe;
the lower sediment return bend includes:
the connector pipe section is vertically arranged and is connected with the bottom end of the metal expansion joint;
the inclined pipe section is connected with the interface pipe section;
the first anti-abrasion sleeve is sleeved outside the inclined pipe section and at least wraps the arc-shaped bottom surface of the inclined pipe section.
In one example, the first wear-resistant sleeve is semi-arc-shaped and is sleeved outside the inclined pipe section.
In one example, the slagging elbow further comprises:
and the second anti-abrasion sleeve is sleeved on the interface pipe section and at least wraps the upper part of the outer connecting end of the interface pipe section and the inclined pipe section.
In one example, the slagging elbow further comprises:
and the outlet pipe section is vertically arranged and is connected with the bottom end of the inclined pipe section.
In one example, the structure further comprises a slag tapping mechanism, the slag tapping mechanism comprising:
the first slag barrel pipe comprises an opening end and a connector end, and the connector end is arranged on the inclined pipe section;
the first cover plate is detachably arranged on the opening end of the first slag barrel pipe;
wherein the first slag barrel pipe is obliquely arranged on the inclined pipe section, and the axis of the first slag barrel pipe is intersected with the axis of the inclined pipe section.
In one example, the slag tapping mechanism further comprises:
the second slag bucket pipe is vertically arranged on the bottom surface of the inclined pipe section, and is positioned below the interface pipe section;
and the second cover plate is detachably arranged on the lower port of the second slag barrel.
In one example, the military cap comprises:
a first annular body;
the second annular body is arranged above the first annular body, and first stand columns are arranged between the second annular body and the first annular body at intervals in the circumferential direction;
the third annular body is arranged above the second annular body, and second stand columns are arranged between the third annular body and the second annular body at intervals in the circumferential direction;
the first ring body, the second ring body, the third ring body, the first stand column and the second stand column jointly form a cage structure with a hollow interior, the third ring body is provided with a first slag discharge port, a second slag discharge port is formed among the third ring body, the second ring body and the second stand column, and a third slag discharge port is formed among the second ring body, the first ring body and the first stand column.
In one example, the diameter of the first annular body is greater than the diameter of the second annular body, which is greater than the diameter of the third annular body.
In one example, the first ring-shaped body, the second ring-shaped body, and the third ring-shaped body are coaxially arranged.
In one example, the slag trap and the first wear sleeve are both made of Cr25Ni20 heat-resistant steel.
The utility model has the advantages that: during the working process, ash and slag generated in the hearth enter the slag discharging vertical pipe from the military cap and are discharged through the metal expansion joint and the slag discharging bent pipe. The utility model discloses a slag return bend under the below design of sediment standpipe can reduce the impact force of slag, reduces the slag and to the erosive wear of scum pipe, and then can improve the security of structure. Furthermore, the utility model discloses a wrap up first abrasionproof cover on the arc bottom surface of slope pipeline section, also can prolong the life of sediment return bend to improve the safety in utilization.
Drawings
FIG. 1 is a schematic overall structure diagram of a boiler slag discharging port structure;
FIG. 2 is a schematic structural view of a slag trap;
FIG. 3 is a schematic view taken along line A in FIG. 2;
FIG. 4 is a cross-sectional view of a sweep elbow;
FIG. 5 is a schematic view of the structure of the military cap;
FIG. 6 is a schematic view taken along line A-A in FIG. 5;
FIG. 7 is a schematic view of the direction B-B in FIG. 5
Description of reference numerals:
1 general cap
11 a first ring, 12 a second ring, 13 a third ring, 14 a first column, 15 a second column
2 slag discharging vertical pipe
3 Metal expansion joint
4 slag discharging bent pipe
41 an interface pipe section, 42 an inclined pipe section, 43 an outlet pipe section, 44 a first anti-wear sleeve and 45 a second anti-wear sleeve;
5 barrel slag mechanism
51 a first barrel slag pipe, 52 a first cover plate;
53 second barrel slag pipe, 54 second cover plate;
6 air distribution plates.
Detailed Description
In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of 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. The present invention can be embodied in many different forms other than those specifically described herein, and it will be apparent to those skilled in the art that similar modifications can be made without departing from the spirit and scope of the invention, and it is therefore not to be limited to the specific embodiments disclosed below.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1 to 7, a slag discharge port structure of a boiler according to an embodiment of the present invention includes a military cap 1, a slag discharge standpipe 2, a metal expansion joint 3, and a slag discharge elbow 4.
The military cap 1 is arranged on the air distribution plate 6 and is positioned in the hearth so as to disperse and guide ash in the hearth into the slag discharging vertical pipe 2. The slag discharging vertical pipe 2 is arranged below the air distribution plate 6, and the top end of the slag discharging vertical pipe 2 is connected with the bottom end opening of the military cap 1. The upper end of the metal expansion joint 3 is connected with the bottom end of the slag discharging vertical pipe 2. The slag discharging elbow 4 comprises a connector pipe section 41, an inclined pipe section 42 and a first anti-abrasion sleeve 44, wherein the connector pipe section 41 is vertically arranged, the connector pipe section 41 is connected with the bottom end of the metal expansion joint 3, the inclined pipe section 42 is connected with the connector pipe section 41, the first anti-abrasion sleeve 44 is sleeved outside the inclined pipe section 42, and the first anti-abrasion sleeve 44 at least wraps the arc-shaped bottom surface of the inclined pipe section 42.
During the working process, ash and slag generated in the hearth enter the slag discharging vertical pipe 2 from the military cap 1 and are discharged through the metal expansion joint 3 and the slag discharging elbow pipe 4. This structure is through the design sediment return bend 4 down in the below of sediment standpipe 2, can reduce the impact force of slag, reduces the slag and to the erosive wear of scum pipe, and then can improve the security of structure. In addition, the structure can prolong the service life of the slag discharging elbow 4 and improve the use safety by wrapping the first anti-abrasion sleeve 44 on the arc-shaped bottom surface of the inclined pipe section 42.
In this embodiment, the metal expansion joint 3 may be an insertion expansion joint, one end of which is welded to the lower end of the slag discharge standpipe 2, and the other end of which is welded to the port of the interface pipe section 41. The angle between the inclined tube section 42 and the interface section may be 120-150 deg..
Further, the first wear-resistant sleeve 44 is semi-arc shaped and is sleeved outside the inclined pipe section 42. Specifically, it is sleeved on the arc-shaped bottom surface of the inclined pipe section 42. The cost of retrofitting is saved by only wrapping the lower portion of the angled tube section 42. The first wear sleeve 44 may be welded to the slanted tube section 42.
Further, the slag discharging elbow 4 further includes a second anti-wear sleeve 45, the interface pipe section 41 is sleeved with the second anti-wear sleeve 45, and the second anti-wear sleeve 45 at least wraps the upper portion of the outer connecting end of the interface pipe section 41 and the inclined pipe section 42. Specifically, this position is located above the intersection of the inclined pipe section 42 and the interface pipe section 41 and is also subject to slag erosion. The second wear-resistant sleeve 45 is arranged at the position, and has two functions, namely, the wear-resistant function is realized; the other is to protect the joint pipe section 41, because the joint pipe section 41 is sometimes knocked during slag dropping, and if the second wear-resistant sleeve 45 is not provided, the joint pipe section 41 is easy to crack.
Further, the slag trap 4 further includes an outlet pipe section 43, which is vertically disposed and connected to the bottom end of the inclined pipe section 42, and the outlet pipe section 43 functions to guide the slag downward.
Further, the structure further comprises a slag barrel mechanism 5, wherein the slag barrel mechanism 5 comprises a first slag barrel pipe 51 and a first cover plate 52, the first slag barrel pipe 51 comprises an opening end and a joint end, and the joint end is arranged on the inclined pipe section 42; the first cover plate 52 is detachably arranged on the opening end of the first slag barrel 51; wherein, the first slag ladle pipe 51 is obliquely arranged on the inclined pipe section 42, and the axis of the first slag ladle pipe 51 is intersected with the axis of the inclined pipe section 42. Specifically, during slag removal, a long rod can extend into the inclined pipe section 42 through the first slag barrel pipe 51 to clean slag and avoid furnace blockage. In this embodiment, the first cover plate 52 may be bolted to the first slag barrel 51.
Further, the slag barrel mechanism 5 further comprises a second slag barrel 53 and a second cover plate 54, the second slag barrel 53 is vertically arranged on the bottom surface of the inclined pipe section 42, and the second slag barrel 53 is located below the interface pipe section 41; the second cover plate 54 is detachably mounted on the lower end of the second slag ladle 53. Specifically, in the slag discharging process, a long rod can extend into the interface pipe section 41 and the pipeline space above the interface pipe section through the second slag barrel 53 to clean the slag and avoid furnace blockage. In this embodiment, the second cover plate 54 may be bolted to the second slag barrel 53.
Furthermore, the slag trap 4 and the first wear-resistant sleeve 44 are both made of Cr25Ni20 heat-resistant steel. Particularly, the Cr25Ni20 heat-resistant steel is used for replacing the casting pipe, so that the problems of large brittleness, poor toughness and poor welding performance of the casting slag discharging pipe in the using process can be prevented, and the problem of crater cracking failure caused by the action of hot stress of cold heat exchange of the casting slag discharging pipe can be prevented.
Further, the military cap 1 comprises a first annular body 11, a second annular body 12 and a third annular body 13. The first annular body 11 is the bottom end of the military cap 1, is mainly used for supporting and mounting the second annular body 12 and the third annular body 13, and is also mounted on the upper end surface of the furnace bottom air distribution plate 6. The second ring body 12 is positioned above the first ring body 11, and first columns 14 are provided between the second ring body 12 and the first ring body 11 at intervals in the circumferential direction. The third ring body 13 is positioned above the second ring body 12, and second columns 15 are provided between the third ring body 13 and the second ring body 12 at intervals in the circumferential direction. The first annular body 11, the second annular body 12, the third annular body 13, the first upright post 14 and the second upright post 15 jointly form a cage structure with a hollow interior, the third annular body 13 is provided with a first slag discharge port, a second slag discharge port is formed among the third annular body 13, the second annular body 12 and the second upright post 15, and a third slag discharge port is formed among the second annular body 12, the first annular body 11 and the first upright post 14.
In the military cap 1, the first ring body 11, the second ring body 12, the third ring body 13, the first upright post 14 and the second upright post 15 jointly form an internal hollow cage structure, and the third ring body 13 is provided with the first slag discharge port, a plurality of second slag discharge ports are formed among the third ring body 13, the second ring body 12 and the second upright post 15, and a plurality of third slag discharge ports are formed among the second ring body 12, the first ring body 11 and the first upright post 14, so that after falling down, ash slag burnt in a hearth can respectively enter the hollow cage structure from the first slag discharge port, the second slag discharge port and the third slag discharge port and is discharged from the slag discharge pipe. Particularly, the arrangement of the first slag discharge port can solve the technical problem that slag is easy to form bridging coking on the top of the military cap 1, so that the slag discharge of a boiler is difficult.
Further, in the present military cap 1, the diameter of the first annular body 11 is larger than the diameter of the second annular body 12, and the diameter of the second annular body 12 is larger than the diameter of the third annular body 13.
Specifically, the first annular body 11, the second annular body 12 and the third annular body 13 are sequentially reduced, so that the whole military cap 1 can form a tower-shaped structure with a small top and a large bottom. According to the structure, when the slag falls down and contacts the military cap 1, the slag is cut into discrete blocks by the third annular body 13, the second annular body 12, the second upright post 15 and the first upright post 14, and enters from different slag discharge ports to complete slag discharge, so that bridging coking can be further avoided, and the slag discharge effect is improved.
Further, the first annular body 11, the second annular body 12, and the third annular body 13 are coaxially disposed.
Specifically, the first annular body 11, the second annular body 12 and the third annular body 13 form a regular tower-shaped structure, the top of the tower-shaped structure is provided with a first slag discharge port, the upper part of the side surface is provided with a second slag discharge port, and the lower part of the side surface is provided with a third slag discharge port, so that slag can uniformly enter from the slag discharge ports to complete slag discharge, and the slag discharge effect can be improved.
Further, the distance between the first ring body 11 and the second ring body 12 is larger than the distance between the second ring body 12 and the third ring body. Six first uprights 14. The number of the second posts 15 is four. Particularly, the structure can ensure that the sizes of the first slag discharge port, the second slag discharge port and the third slag discharge port are relatively consistent, so that the slag can be relatively uniform dispersed blocks, and the slag discharge effect is improved. And because the upper slag discharge port is less, and the lower slag discharge port is more, the condition that the slag is more than the lower slag in the hearth and the upper slag is less is suitable, and the slag discharge effect can be further improved.
In this embodiment, the first annular body 11, the second annular body 12, the third annular body 13, the first column 14, and the second column 15 are integrally cast and formed of Cr25Ni 20. The height of the whole military cap 1 is 700mm, the distance between the first annular body 11 and the second annular body 12 is 460mm, the distance between the second annular body 12 and the third annular body 13 is 240mm, the outer diameter of the first annular body 11 is 480, the inner diameter is 360, the height is 30mm, the height of the second annular body 12 is 50mm, the outer diameter of the third annular body 13 is 260mm, the inner diameter is 199mm, and the height is 50 mm. The first upright 14 and the second upright 15 are square cylinders with a width of 30 mm. Compared with the traditional general cap 1, the height of the general cap 1 is improved from 400mm to 700mm, and the slag discharge effect of the general cap 1 can be improved by matching the improved structure of the application.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (10)
1. A boiler slagging port structure, wherein the structure comprises:
the military cap (1) is arranged on the air distribution plate (6) and is positioned in the hearth;
the slag discharging vertical pipe (2) is arranged below the air distribution plate (6), and the top end of the slag discharging vertical pipe (2) is connected with the bottom end opening of the military cap (1);
the upper end of the metal expansion joint (3) is connected with the bottom end of the slag discharging vertical pipe (2);
a slug discharge elbow (4) comprising:
the connector pipe section (41) is vertically arranged, and the connector pipe section (41) is connected with the bottom end of the metal expansion joint (3);
an inclined pipe section (42) connected with the joint pipe section (41);
the first anti-abrasion sleeve (44) is sleeved outside the inclined pipe section (42), and the first anti-abrasion sleeve (44) at least wraps the arc-shaped bottom surface of the inclined pipe section (42).
2. The boiler slagging port structure according to claim 1, wherein the first wear sleeve (44) is semi-arc shaped and is sleeved outside the inclined pipe section (42).
3. The boiler slagging port structure according to claim 2, wherein the lower slag elbow (4) further comprises:
and the second anti-abrasion sleeve (45) is sleeved on the connector pipe section (41), and the second anti-abrasion sleeve (45) at least wraps the upper part of the outer connecting end of the connector pipe section (41) and the inclined pipe section (42).
4. The boiler slagging port structure according to claim 1, wherein the lower slag elbow (4) further comprises:
and the outlet pipe section (43) is vertically arranged and is connected with the bottom end of the inclined pipe section (42).
5. The boiler slagging port structure according to claim 1, characterized in that the structure further comprises a slag barrel mechanism (5), the slag barrel mechanism (5) comprising:
a first barrel slag tube (51) including an open end and a nipple end, the nipple end disposed on the inclined tube section (42);
a first cover plate (52) which is detachably arranged on the opening end of the first slag barrel (51);
wherein the first slag barrel pipe (51) is obliquely arranged on the inclined pipe section (42), and the axis of the first slag barrel pipe (51) is intersected with the axis of the inclined pipe section 42).
6. The boiler slag discharge port structure according to claim 5, wherein the slag barrel mechanism (5) further comprises:
the second slag barrel pipe (53) is vertically arranged on the bottom surface of the inclined pipe section (42), and the second slag barrel pipe (53) is positioned below the interface pipe section (41);
and the second cover plate (54) is detachably arranged on the lower port of the second slag barrel pipe (53).
7. Boiler slagging port structure according to claim 1, characterized in that the blasting cap (1) comprises:
a first annular body (11);
a second ring-shaped body (12) provided above the first ring-shaped body (11), and first columns (14) provided between the second ring-shaped body (12) and the first ring-shaped body (11) at intervals in a circumferential direction;
a third annular body (13) provided above the second annular body (12), and second columns (15) provided between the third annular body (13) and the second annular body (12) at intervals in the circumferential direction;
the first annular body (11), the second annular body (12), the third annular body (13), the first stand column (14) and the second stand column (15) jointly form a cage structure with a hollow interior, a first slag discharge port is formed in the third annular body (13), a second slag discharge port is formed among the third annular body (13), the second annular body (12) and the second stand column (15), and a third slag discharge port is formed among the second annular body (12), the first annular body (11) and the first stand column (14).
8. Boiler slagging port structure according to claim 7, characterized in that the diameter of the first ring (11) is larger than the diameter of the second ring (12), the diameter of the second ring (12) being larger than the diameter of the third ring (13).
9. Boiler slagging port structure according to claim 7, characterized in that the first (11), second (12) and third (13) rings are arranged coaxially.
10. The boiler deslagging port structure of claim 1, wherein the lower slag elbow (4) and the first wear-resistant sleeve (44) are both made of Cr25Ni20 heat-resistant steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022940601.4U CN214223089U (en) | 2020-12-10 | 2020-12-10 | Boiler slag discharge port structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022940601.4U CN214223089U (en) | 2020-12-10 | 2020-12-10 | Boiler slag discharge port structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214223089U true CN214223089U (en) | 2021-09-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022940601.4U Active CN214223089U (en) | 2020-12-10 | 2020-12-10 | Boiler slag discharge port structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214223089U (en) |
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2020
- 2020-12-10 CN CN202022940601.4U patent/CN214223089U/en active Active
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