CN220187517U - Protection apron suitable for IGCC unit air separation cold box top - Google Patents
Protection apron suitable for IGCC unit air separation cold box top Download PDFInfo
- Publication number
- CN220187517U CN220187517U CN202320487443.2U CN202320487443U CN220187517U CN 220187517 U CN220187517 U CN 220187517U CN 202320487443 U CN202320487443 U CN 202320487443U CN 220187517 U CN220187517 U CN 220187517U
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- Prior art keywords
- cover plate
- holes
- air separation
- igcc
- cold box
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- 238000000926 separation method Methods 0.000 title claims abstract description 24
- 230000001681 protective effect Effects 0.000 claims abstract description 13
- 229910000831 Steel Inorganic materials 0.000 claims description 30
- 239000010959 steel Substances 0.000 claims description 30
- 230000029058 respiratory gaseous exchange Effects 0.000 claims description 17
- 238000001816 cooling Methods 0.000 claims description 16
- 238000007789 sealing Methods 0.000 claims description 3
- 238000005260 corrosion Methods 0.000 abstract description 8
- 230000007797 corrosion Effects 0.000 abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 239000007789 gas Substances 0.000 description 4
- 229910001220 stainless steel Inorganic materials 0.000 description 4
- 239000010935 stainless steel Substances 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229910000746 Structural steel Inorganic materials 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000002309 gasification Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 239000010963 304 stainless steel Substances 0.000 description 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- 229910000589 SAE 304 stainless steel Inorganic materials 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 235000000396 iron Nutrition 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
Landscapes
- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
Abstract
The utility model relates to the technical field of air separation cold boxes of units, and provides a protective cover plate suitable for the top of an air separation cold box of an IGCC unit, which aims to solve the problems that the top of the existing cold box is easy to sink and is inconvenient to replace after being rusted; the cover plate is also provided with a plurality of stress release holes, and one stress release hole is arranged at intervals with the first slotted hole and the second slotted hole; the problem of corrosion of cold box top apron, the easy ponding of cold box top deformation is solved to it.
Description
Technical Field
The utility model relates to the technical field of air separation cold boxes of units, in particular to a protective cover plate suitable for the top of an air separation cold box of an IGCC unit.
Background
The Tianjin IGCC power station mainly comprises four parts of air separation, coal gasification, synthesis gas purification and power island. The oxygen and coal powder prepared by air separation generate synthetic gas (CO content is about 60%, H) in the gasification furnace 2 About 25% of the content) is converted into clean gas fuel through the purification processes of dust removal, desulfurization and the like to drive the gas turbine. 60 m of air separation cooling boxThe high, pure steel construction box, cold box top has a plurality of breathing holes to prevent superpressure and negative pressure, has a plurality of manholes in addition, as the operation hole of mending pearly-lustre sand, breathing hole and manhole are all direct mount on the top steel sheet.
However, the top iron plate of the cold box is easy to generate a concave area due to gravity deformation. Although the anti-corrosion maintenance is carried out every year, rainwater is easy to accumulate at the pit, and the surface expansion of the pure steel structure box body is large, so that the paint layer starts to be cracked. The accumulated water enters under the paint layer to cause serious corrosion of the steel plate, and even part of the accumulated water is corroded and perforated. The inside equipment and the pearly-lustre sand that keeps cold that is equipped with just is filled with nitrogen gas and keeps malleation, and the place that can hoist and mount is not had to the top, if the steel sheet corrosion is serious, also can't change the steel sheet of top corrosion.
Disclosure of Invention
The utility model provides a protective cover plate suitable for the top of an air separation cold box of an IGCC unit, which solves the problems of corrosion of the cover plate at the top of the cold box and easy water accumulation due to deformation of the top of the cold box.
The embodiment of the utility model is realized by the following technical scheme:
a protective cover plate suitable for the top of an air separation cooling box of an IGCC unit comprises a plurality of layers of grid frames paved on a steel plate at the top of the air separation cooling box and a cover plate arranged on the grid frames,
the cover plate is provided with a plurality of first slotted holes for the breathing holes to pass through and a plurality of second slotted holes for the manholes to pass through, and a buckling cap for sealing the second slotted holes is arranged on one second slotted hole;
the cover plate is also provided with a plurality of stress release holes, and one stress release hole is arranged at intervals with the first slotted hole and the second slotted hole.
Further, the cover plate is obliquely arranged.
Further, the cover plate is obliquely arranged from the breathing hole to the manhole direction.
Further, the stress release hole is one or more of a round hole, an oval hole, a square hole, a triangular hole or other polygonal holes.
Further, the buckling cap and the cover plate are detachably connected.
Further, the outer sides of the first slotted holes are provided with first baffles, and the outer sides of the second slotted holes are provided with second baffles.
Further, the first baffle is provided with two groups along breathing hole central symmetry, just swing joint between first baffle bottom and the apron, the top inside wall of first baffle is provided with magnet.
Further, the upper portion of the first baffle plate is further provided with a plurality of through holes for the bolts to penetrate through, so that the bolts can penetrate through the symmetrical through holes on the two first baffle plates and fix the through holes.
The technical scheme of the embodiment of the utility model has at least the following advantages and beneficial effects:
the utility model has reasonable design and simple structure, solves the corrosion problem of the cover plate at the top of the cold box and the problem that the top of the cold box lacks auxiliary beam support and is easy to accumulate water due to deformation of the top of the cold box by arranging the grid frame and the cover plate at the top of the cold box, and the cover plate at the top of the cold box is convenient to replace, thereby bringing great convenience to later maintenance.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a protective cover plate applicable to the top of an air separation cooling box of an IGCC unit according to an embodiment of the utility model;
fig. 2 is a schematic structural diagram of a grid framework according to an embodiment of the present utility model;
icon: the device comprises a 1-cold box, a 2-grid frame, a 3-cover plate, a 31-first slotted hole, a 32-second slotted hole, a 4-first baffle, a 5-bolt, a 6-breathing hole, a 7-buckling cap, an 8-manhole, a 9-second baffle and a 10-stress release hole.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Example 1
The protection cover plate suitable for the top of an air separation cooling box of an IGCC unit comprises a plurality of layers of grid frames 2 laid on a steel plate at the top of the air separation cooling box 1 and a cover plate 3 arranged on the grid frames 2, wherein a plurality of first slotted holes 31 for a breathing hole 6 to pass through and a plurality of second slotted holes 32 for a manhole 8 to pass through are formed in the cover plate 3, and a buckling cap 7 for sealing the second slotted holes 32 is arranged on one second slotted hole 32; the cover plate 3 is further provided with a plurality of stress release holes 10, and one stress release hole 10 is spaced from the first slot hole 31 and the second slot hole 32.
Preferably, a circle of stainless steel angle steel with the thickness of 50mm is firstly surrounded at the top edge of the cold box 1, and one side is lifted up to the height of 100mm. Then, a plurality of layers of oblique grid frames 2 are built by using 50mm angle steel, the distance between the angle steel of the grid frames 2 is 1500mm, the manhole 8 and the breathing hole 6 are avoided as much as possible, the intersecting points of the angle steel of the grid frames 2 and the angle steel are cut in half, the intersecting points are welded into a whole, and the grid frames 2 and the surrounding angle steel are welded into a whole. The steel plate at the position of the angle steel and the girder is firmly welded, and the angle iron is firmly welded with the original top steel plate at the intersection point of the angle steel.
After the grid frame 2 is built, a 304 stainless steel plate with the thickness of 5mm is paved above the frame to form a cover plate 3, the cover plate 3 uses a common plate width of 1.5m by 6m, and a plurality of whole plates are used according to the field condition. The edge of each stainless steel plate is firmly welded with each encountered angle steel, all adjacent stainless steel plates are fully welded, and no gap can be reserved. And the stainless steel plate and the angle steel at the edge are fully welded.
When the steel plate is paved at a plurality of manholes 8 at the top of the main cooling box 1, a second slotted hole 32 is reserved as an overhaul hole, angle irons are used for making a surrounding and welding tightly, a buckling cap 7 with a corresponding size is manufactured and buckled above the second slotted hole 32, four corners are welded in a spot mode, sealant is arranged on four edges, the bottom of the buckling cap 7 can also extend to the top of the cooling box 1 by penetrating downwards through a cover plate 3 and a grid frame 2 around the second slotted hole 32, and the steel plate can be selected by a person skilled in the art according to the situation, so that the steel plate cooling box is not limited by the utility model; when the steel plate is paved at a plurality of breathing holes 6 at the top of the main cooling box 1, the steel plate leaves a first slotted hole 31 for the breathing holes 6 to pass through, and the steel plate on the inner side wall of the first slotted hole 31 is tightly welded with the pipe orifice of the breathing holes 6.
The whole used plates are provided with a plurality of stress release holes 10 which are arranged at intervals with the first slot holes 31 and the second slot holes 32, the size of the stress release holes 10 in the embodiment is 200mm by 200mm, and when the whole plates are opened, the lower angle iron and the steel plates are firmly welded, and then the stress release holes 10 are sealed by the steel plates and are tightly welded.
According to the utility model, the grid frame 2 and the cover plate 3 are arranged at the top of the cold box 1, so that the steel plate at the top of the cold box 1 is protected from being rusted, and the top of the cover plate 3 has certain strength, so that the cold box cannot collapse due to walking of workers and cannot bulge due to internal pressure of the cold box 1. The new cover plate 3 at the top has a certain inclination, and no concave area exists, so that rainwater is not accumulated at the top. The problem of corrosion of cold box 1 top apron 3 is solved, cold box 1 top lacks auxiliary girder support, the top warp easily ponding problem.
In this embodiment, the cover plate 3 is obliquely arranged, specifically, in this embodiment, the cover plate 3 is obliquely arranged from the breathing hole 6 to the manhole 8, which is convenient for rainwater and the like to flow away better, and water accumulation is avoided.
In this embodiment, the stress relief holes 10 are one or more of round holes, oval holes, square holes, triangular holes, or other polygonal holes.
In this embodiment, the button cap 7 and the cover plate 3 may be fixedly connected, such as welding or joint gluing; or a detachable connection, such as a plug.
In this embodiment, the second baffle plate 9 is disposed at the outer side of the second slot hole 32, the buckling cap 7 is enclosed at the outer side of the second baffle plate 9, and for stability, the outer side of the buckling cap 7 can be transversely threaded for wire planting and fixing, and bolts or other fixing columns are used to penetrate through the side edge of the buckling cap 7 and the side edge of the second baffle plate 9 for fixing; the manhole 8 can be protected by a certain enclosure by the second baffle 9.
In this embodiment, the outer sides of the first slots 31 are provided with first baffles 4, preferably, the first baffles 4 are mesh plates, the first baffles 4 are symmetrically provided with two groups along the center of the breathing hole 6, the bottom of the first baffles 4 is movably connected with the cover plate 3, and the inner side wall of the top of the first baffles 4 is provided with magnets; the upper parts of the breathing holes 6 are shielded through the first baffles 4, and the breathing holes can be adsorbed and fixed through the magnets at the tops, so that the first baffles 4 are more stable; further, the upper portion of the first baffle 4 may be further provided with a plurality of through holes through which the bolts 5 pass, so that the bolts 5 may pass through the symmetrical two through holes on the first baffle 4 and fix the two through holes, and thus the bolts 5 may pass through the tops of the plurality of first baffles 4 to fix the first baffle 4, so that the first baffle 4 is more stable.
The above is only a preferred embodiment of the present utility model, and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (8)
1. A protective cover plate suitable for the top of an air separation cooling box of an IGCC unit is characterized by comprising a plurality of layers of grid frames paved on a steel plate at the top of the air separation cooling box and a cover plate arranged on the grid frames,
the cover plate is provided with a plurality of first slotted holes for the breathing holes to pass through and a plurality of second slotted holes for the manholes to pass through, and a buckling cap for sealing the second slotted holes is arranged on one second slotted hole;
the cover plate is also provided with a plurality of stress release holes, and one stress release hole is arranged at intervals with the first slotted hole and the second slotted hole.
2. The protective cover plate for the top of an air separation cold box of an IGCC set according to claim 1, wherein the cover plate is arranged obliquely.
3. The protective cover plate suitable for the top of an air separation cooling box of an IGCC set according to claim 2, wherein the cover plate is obliquely arranged from a breathing hole to a manhole direction.
4. The protective cover plate suitable for the top of an air separation cold box of an IGCC set according to claim 1, wherein the stress relief holes are one or more of round holes, oval holes or polygonal holes.
5. The protective cover plate for the top of an air separation cooling box of an IGCC set according to claim 1, wherein the buckling cap is detachably connected with the cover plate.
6. The protective cover plate applicable to the top of an air separation cooling box of an IGCC unit according to claim 1, wherein the outer sides of the first slotted holes are provided with first baffles, and the outer sides of the second slotted holes are provided with second baffles.
7. The protective cover plate suitable for the top of an air separation cooling box of an IGCC unit according to claim 6, wherein the first baffle plate is symmetrically provided with two groups along the center of the breathing hole, the bottom of the first baffle plate is movably connected with the cover plate, and the inner side wall of the top of the first baffle plate is provided with a magnet.
8. The protective cover plate applicable to the top of an air separation cold box of an IGCC unit according to claim 6, wherein a plurality of through holes for bolts to pass through are further formed in the upper portion of the first baffle plate, so that the bolts can pass through the through holes on the two symmetrical first baffle plates and be fixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320487443.2U CN220187517U (en) | 2023-03-14 | 2023-03-14 | Protection apron suitable for IGCC unit air separation cold box top |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320487443.2U CN220187517U (en) | 2023-03-14 | 2023-03-14 | Protection apron suitable for IGCC unit air separation cold box top |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220187517U true CN220187517U (en) | 2023-12-15 |
Family
ID=89099564
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320487443.2U Active CN220187517U (en) | 2023-03-14 | 2023-03-14 | Protection apron suitable for IGCC unit air separation cold box top |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220187517U (en) |
-
2023
- 2023-03-14 CN CN202320487443.2U patent/CN220187517U/en active Active
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