CN218409964U - Convenient device of inside clearance of boiler denitration grid header - Google Patents
Convenient device of inside clearance of boiler denitration grid header Download PDFInfo
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- CN218409964U CN218409964U CN202222013746.9U CN202222013746U CN218409964U CN 218409964 U CN218409964 U CN 218409964U CN 202222013746 U CN202222013746 U CN 202222013746U CN 218409964 U CN218409964 U CN 218409964U
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Abstract
The utility model discloses a convenient device of inside clearance of boiler denitration grid header, including reserving butt joint pipe fitting, ring flange, external pipeline, running through-hole and fastening bolt, the outer end welded connection who reserves butt joint pipe fitting has the ring flange, and the outside of ring flange installs the closure plate flange, it has docking flange to reserve butt joint pipe fitting through the ring flange butt joint, and docking flange's outer end and external pipeline butt joint each other, the outer end of docking flange and ring flange all sets up threaded hole. This convenient device of inside clearance of boiler denitration grid header mainly is the great problem of cut pipe, the weldment work volume of solving unit maintenance denitration grid header tip at every turn, and this problem solution back can use manpower sparingly, the material resources cost, improves maintenance work efficiency, and then the order of propelling maintenance work is develoied. Meanwhile, convenience is provided for subsequent overhauling, checking and processing work each time.
Description
Technical Field
The utility model relates to a boiler technical field specifically is the convenient device of inside clearance of boiler denitration grid header.
Background
At present, the thermal power factory has all implemented the add transformation of denitration equipment for responding to the national energy-concerving and environment-protective policy that is stricter day by day. During the operation of the denitration equipment, a layer of black carbonized sediments are adhered to the inner walls of the pipeline and the header because the ammonia gas contains a small amount of impurities and moisture;
with the increase of the operation time, the accumulation of black carbonized sediments increases, which can cause the reduction of ammonia amount of gas, the reduction of denitration efficiency and the uncontrollable condition of NOx environmental protection indexes, so that the internal cleaning of denitration equipment pipelines, headers and the like is taken as the key work of overhauling in the unit overhauling;
when every header clearance, need cut the closure plate pipeline section of header one side with gas at every turn, the welding resumes after inside cleaning work is accomplished, and each 12 headers (each unit is different) need to cut the pipe and weld the recovery work altogether in the first side and the second side, and work load is great, consequently, on saving repair time and manpower, material resources cost, how to improve maintenance efficiency and overhaul economic nature, the problem that needs to solve urgently.
In order to solve the problems, innovative design is urgently needed on the basis of the original cleaning structure.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a convenient device of inside clearance of boiler denitration grid header to when solving every header clearance that proposes in the above-mentioned background art, need at every turn to cut the closure plate pipeline section of header one side with the gas, the rewelding resumes after the inside cleaning work is accomplished, and each 12 headers in the first second side need to cut pipe and welding recovery work, the great problem of work load altogether.
In order to achieve the above object, the utility model provides a following technical scheme: convenient device of inside clearance of boiler denitration grid header, including reserving butt joint pipe fitting, ring flange, external pipeline, running through-hole and fastening bolt, the outer end welded connection who reserves butt joint pipe fitting has the ring flange, and the outside of ring flange installs the closure plate flange, reserve butt joint pipe fitting and have butt joint flange through the ring flange butt joint, and butt joint flange's outer end and external pipeline butt joint each other, the outer end of butt joint flange and ring flange all sets up threaded hole, and the inner of threaded hole installs fastening bolt, and butt joint flange and ring flange pass through fastening bolt and dock each other, the through-hole has been seted up to the inboard of butt joint flange and ring flange and has been run through, install sealed the pad between butt joint flange and the ring flange.
Furthermore, reserve butt joint pipe fitting and be provided with and reserve inner groovy and interior anti-oxidation corrosion coating, and reserve butt joint pipe fitting's inboard and seted up and reserve the inner groovy to reserve butt joint pipe fitting has interior anti-oxidation corrosion coating through reserving the inner groovy coating.
Furthermore, the reserved butt joint pipe fitting is uniformly distributed with reserved inner grooves, and the reserved butt joint pipe fitting can be effectively prolonged in service life through the reserved inner grooves and the inner anti-oxidation corrosion layers coated on the reserved inner grooves.
Furthermore, the inside of closure plate flange is enclosed construction, and the closure plate flange passes through fastening bolt and the mutual butt joint of ring flange.
Furthermore, the butt flange is connected with the external pipeline in a welding mode, and the external pipeline is in butt joint with the outer side of the flange plate through the butt flange to form a dismounting structure.
Furthermore, the outer surface of the sealing gasket is respectively attached to the outer surfaces of the butt joint flange and the flange plate, and the sealing gasket is symmetrically distributed about the center of the reserved butt joint pipe fitting.
Compared with the prior art, the beneficial effects of the utility model are that:
1. this convenient device of inside clearance of boiler denitration grid header mainly is that the great problem of pipe cutting, the weldment work volume of solving unit maintenance denitration grid header tip at every turn, and this problem solution back can use manpower sparingly, material resources cost, improves and overhauls work efficiency, and then the order of propelling maintenance work is develoied. Meanwhile, convenience is provided for each subsequent overhaul, inspection and treatment work;
2. this convenient device of inside clearance of boiler denitration grid header can be according to on-the-spot actual position and under the convenient operation condition, cuts off a grid header tip shrouding, and after the inside clearance work, full welding processed flange, with fastening bolt connection fastening closure plate ring flange after adding the sealing pad, when later maintenance, as long as dismantle the ring flange can carry out the clearance work of header inner wall, use manpower sparingly, material resources, improve and overhaul labor efficiency.
Drawings
FIG. 1 is a schematic view of the front view structure of the present invention;
FIG. 2 is a schematic cross-sectional view of the reserved butt-joint pipe of the present invention;
FIG. 3 is a schematic side sectional view of the docking flange of the present invention;
fig. 4 is an enlarged schematic view of a portion a in fig. 2 according to the present invention.
In the figure: 1. reserving butt joint pipe fittings; 101. reserving an inner groove; 102. an inner oxidation corrosion resistant layer; 2. a flange plate; 3. a closure plate flange; 4. butting flanges; 5. an external pipeline; 6. a threaded hole; 7. a through hole is penetrated; 8. fastening a bolt; 9. and a gasket.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-4, the present invention provides a technical solution: the convenient cleaning device for the interior of the boiler denitration grid header comprises a reserved butt joint pipe fitting 1, a reserved inner groove 101, an inner oxidation-resistant corrosion layer 102, a flange plate 2, a blocking plate flange 3, a butt joint flange 4, an external pipeline 5, a threaded hole 6, a through hole 7, a fastening bolt 8 and a sealing gasket 9.
Reserve butt joint pipe fitting 1's outer end welded connection has ring flange 2, and closure plate flange 3 is installed in ring flange 2's the outside, reserve butt joint pipe fitting 1 and have docking flange 4 through ring flange 2 butt joint, and docking flange 4's outer end and external pipeline 5 butt joint each other, docking flange 4 and ring flange 2's outer end all seted up threaded hole 6, and threaded hole 6's the inner installs fastening bolt 8, and docking flange 4 and ring flange 2 butt joint each other through fastening bolt 8, docking flange 4 and ring flange 2's inboard has been seted up and has been run through-hole 7, install sealed pad 9 between docking flange 4 and ring flange 2.
Reserve the butt joint pipe fitting 1 and be provided with reservation inner groovy 101 and interior anti-oxidation corrosion layer 102, and reserve the inboard of butt joint pipe fitting 1 and seted up reservation inner groovy 101 to reserve butt joint pipe fitting 1 through reserve inner groovy 101 coating have interior anti-oxidation corrosion layer 102. Reserved inner grooves 101 are uniformly distributed on the inner side of the reserved butt joint pipe fitting 1, and the reserved butt joint pipe fitting 1 is coated with an inner anti-oxidation corrosion layer 102 through the reserved inner grooves 101.
The inside of closure plate flange 3 is enclosed construction, and closure plate flange 3 docks each other with ring flange 2 through fastening bolt 8. The butt flange 4 is connected with the external pipeline 5 in a welding mode, and the external pipeline 5 is in butt joint with the outer side of the flange plate 2 through the butt flange 4 to form a dismounting structure. The outer surface of the sealing gasket 9 is respectively attached to the outer surfaces of the butt flange 4 and the flange 2, and the sealing gasket 9 is symmetrically distributed about the center of the reserved butt pipe fitting 1.
According to the method, an end sealing plate of the grid header can be cut off according to the actual position of the site and the condition of convenient operation, after the internal cleaning work is finished, the processed butt flange 4 is fully welded, the sealing gasket 9 is added, and then the fastening blocking plate flange plate 2 is connected by the fastening bolt 8, so that the flange mounting work of the header is finished, similarly, the flange mounting work of other headers is carried out according to the method, and during later maintenance, the cleaning work of the inner wall of the header can be carried out as long as the flange plate 2 is detached.
The working principle is as follows: when the convenient cleaning device in the boiler denitration grid header is used, according to the figures 1-4, the device is firstly placed at a position needing to work, the convenient cleaning device in the boiler denitration grid header is simple in material and manufacture, a processing schematic diagram can be drawn after the size of an external pipeline 5 of the header is measured on site, a carbon steel plate with the plate thickness of 10mm is used for blanking phi 285mm for butting a flange 4, then bolts M22 and DN150mm are used for matching a pipeline with through holes 7 according to the size in the processing schematic diagram, the other pipeline is not provided with the through holes 7 due to the sealing requirement of a blocking plate, flange sealing gaskets 9 phi 200 phi 150 phi 3mm and M22 are connected with fastening bolts 8 nuts, and the like, and the preparation is complete;
after the preparation work is complete, an end sealing plate of the grid header can be cut off according to the actual position on site and the condition of convenient operation, after the internal cleaning work is finished, the processed butt flange 4 is fully welded, the sealing gasket 9 is added, and then the fastening blocking plate flange 2 is connected by the fastening bolt 8, so that the flange additional installation work of the header is finished, similarly, the flange additional installation work of other headers is carried out, and during later maintenance, the cleaning work of the inner wall of the header can be carried out as long as the flange 2 is detached, thereby saving manpower and material resources, improving the maintenance labor efficiency and increasing the overall practicability.
Those not described in detail in this specification are within the skill of the art.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. Convenient device of inside clearance of boiler denitration grid header, including reserving butt joint pipe fitting (1), ring flange (2), external pipeline (5), running through-hole (7) and fastening bolt (8), its characterized in that: reserve butt joint pipe fitting (1) outer end welded connection have ring flange (2), and the closure plate flange (3) are installed in the outside of ring flange (2), reserve butt joint pipe fitting (1) and have butt joint flange (4) through ring flange (2) butt joint, and the outer end of butt joint flange (4) and external pipeline (5) butt joint each other, threaded hole (6) have all been seted up to the outer end of butt joint flange (4) and ring flange (2), and the inner of threaded hole (6) installs fastening bolt (8), and butt joint flange (4) and ring flange (2) through fastening bolt (8) butt joint each other, through-hole (7) have been seted up to the inboard of butt joint flange (4) and ring flange (2), install sealed pad (9) between butt joint flange (4) and ring flange (2).
2. The convenient device of inside clearance of boiler denitration grid header of claim 1, characterized in that: the reserved butt joint pipe fitting (1) is provided with a reserved inner groove (101) and an inner anti-oxidation corrosion layer (102), the reserved inner groove (101) is formed in the inner side of the reserved butt joint pipe fitting (1), and the inner anti-oxidation corrosion layer (102) is coated on the reserved butt joint pipe fitting (1) through the reserved inner groove (101).
3. The inside clearance facility of boiler denitration grid header of claim 2, characterized in that: the inner side of the reserved butt joint pipe fitting (1) is uniformly distributed with reserved inner grooves (101), and the reserved butt joint pipe fitting (1) is coated with an inner oxidation-resistant corrosion layer (102) through the reserved inner grooves (101).
4. The inside clearance facilitate device of boiler denitration grid header of claim 1, characterized in that: the inside of closure plate flange (3) is enclosed construction, and closure plate flange (3) dock each other through fastening bolt (8) and ring flange (2).
5. The convenient device of inside clearance of boiler denitration grid header of claim 1, characterized in that: the butt flange (4) is connected with the external pipeline (5) in a welding mode, and the external pipeline (5) is in butt joint with the outer side of the flange plate (2) through the butt flange (4) to form a dismounting structure.
6. The convenient device of inside clearance of boiler denitration grid header of claim 1, characterized in that: the outer surface of the sealing gasket (9) is respectively attached to the outer surfaces of the butt flange (4) and the flange plate (2), and the sealing gasket (9) is symmetrically distributed about the center of the reserved butt pipe fitting (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222013746.9U CN218409964U (en) | 2022-08-01 | 2022-08-01 | Convenient device of inside clearance of boiler denitration grid header |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222013746.9U CN218409964U (en) | 2022-08-01 | 2022-08-01 | Convenient device of inside clearance of boiler denitration grid header |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218409964U true CN218409964U (en) | 2023-01-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222013746.9U Active CN218409964U (en) | 2022-08-01 | 2022-08-01 | Convenient device of inside clearance of boiler denitration grid header |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218409964U (en) |
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2022
- 2022-08-01 CN CN202222013746.9U patent/CN218409964U/en active Active
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