CN212157247U - Unequal wall thickness boiler membrane type water wall tube - Google Patents
Unequal wall thickness boiler membrane type water wall tube Download PDFInfo
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- CN212157247U CN212157247U CN202020778765.9U CN202020778765U CN212157247U CN 212157247 U CN212157247 U CN 212157247U CN 202020778765 U CN202020778765 U CN 202020778765U CN 212157247 U CN212157247 U CN 212157247U
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Abstract
The boiler membrane type water wall pipe with unequal wall thickness. At present, the abrasion allowance is considered on the whole periphery of the tube wall of the membrane water-cooled wall of the conventional boiler, certain waste of the tube wall thickness of a non-contact smoke side is caused, smoke carrying combustion particles moves at a high speed in a hearth, and the membrane water-cooled wall of the boiler is continuously impacted and washed, so that the outer wall of a water-cooled wall tube is seriously abraded. The utility model discloses a constitution includes: the water wall pipe (5), the water wall pipe cross section be the wall thickness ring shape of varying wall, including equal thickness pipe wall (1), the wall thickness of varying pipe (3) two parts, equal thickness pipe wall, the wall thickness of varying pipe enclose into the cross section and be circular shape central channel (2), a plurality of the water wall pipe syntropy, interval arrangement, two adjacent water wall pipes are connected with fin band steel (4), the fin band steel weld in equal thickness pipe wall and the wall thickness transition position of varying. The utility model is used for unequal wall thickness boiler membrane wall cooling pipe.
Description
The technical field is as follows:
the utility model relates to a boiler equipment field, concretely relates to wall thickness boiler membrane wall tube varies.
Background art:
at present, the membrane water wall of conventional boiler is formed by welding uniform wall thickness water wall pipes through fin band steel, and the pipe wall is whole all around to consider the wearing and tearing allowance, smugglies the flue gas of burning granule in furnace high-speed motion secretly, constantly strikes and erodees the membrane water wall of boiler, causes the serious wearing and tearing of water wall pipe outer wall to aggravate the risk that the boiler explodes the pipe, and when appearing damaging, the blowing out is overhauld and is very inconvenient wastes time and energy, and then influences the safety in production.
The utility model has the following contents:
the utility model aims at providing a wall thickness boiler membrane wall tube varies.
The above purpose is realized by the following technical scheme:
a film type water wall tube of a boiler with unequal wall thickness comprises the following components: the cross section of the water wall tube is in a ring shape with unequal wall thickness and comprises two parts, namely an equal-thickness tube wall and an unequal-thickness tube wall, the equal-thickness tube wall and the unequal-thickness tube wall are enclosed to form a central channel with a circular cross section, the water wall tubes are arranged in the same direction and at intervals, the two adjacent water wall tubes are connected by fin flat steel, and the fin flat steel is welded at the transition position of the equal-thickness tube wall and the unequal-thickness tube wall.
The cross section of the uniform-thickness tube is in a uniform semi-annular shape, the cross section of the non-uniform-thickness tube wall is in a special-shaped semi-annular shape with the increased thickness, and the maximum wall thickness of the non-uniform-thickness tube wall is more than or equal to three-half of the wall thickness of the uniform-thickness tube wall.
The membrane type water wall tube of the boiler with unequal wall thicknesses is characterized in that the water wall tube is cylindrical, the central channel is a cylindrical channel which is not coaxial with the water wall tube, and the main body of the water wall tube is a seamless water wall tube or a seamed water wall tube.
Has the advantages that:
1. the utility model relates to a wall thickness boiler membrane wall pipe varies, a plurality of wall thickness membrane wall pipe syntropies vary, the interval arrangement, a plurality of fin band steels are used for connecting adjacent two wall thickness membrane wall pipe that vary and make the thick side pipe wall of all wall thickness membrane wall pipe all towards the inboard flue gas side of furnace, effectively avoid the flue gas to cause to the membrane wall to erode and the excessive attenuate phenomenon of the outer wall that the striking leads to, increase the operating duration of a whole set of boiler equipment, reduce and overhaul the number of times, when the higher boiler flue gas of velocity erodees, compare the ability of resistance to wearing with wall thickness wall pipe such as conventionality reinforcing, the system is after long-term operation, boiler water wall thickness still has sufficient safety margin.
The utility model discloses the membrane type water wall pipe that adopts does not receive the material to influence, suitably reduces the non-wearing and tearing side pipe wall wearing and tearing allowance in the furnace outside, promotes inboard wearing and tearing lateral wall thickness, and the unit weight is limited to be increased, nevertheless wear-resisting margin improves greatly, and economic nature is good.
Description of the drawings:
FIG. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a schematic diagram of the structure of a waterwall tube;
in the figure: 1. equal-thickness pipe walls 2, a central channel 3, unequal-thickness pipe walls 4, fin flat steel 5, water-cooled wall pipes 6 and the inner side of a hearth.
The specific implementation mode is as follows:
example 1:
a film type water wall tube of a boiler with unequal wall thickness comprises the following components: the water wall tube 5 is characterized in that the cross section of the water wall tube is in a ring shape with unequal wall thickness and comprises two parts, namely an equal-thickness tube wall 1 and an unequal-thickness tube wall 3, the equal-thickness tube wall and the unequal-thickness tube wall are enclosed to form a central channel 2 with a circular cross section, a plurality of water wall tubes are arranged in the same direction and at intervals, two adjacent water wall tubes are connected through fin flat steels 4, and the fin flat steels are welded at transition positions of the equal-thickness tube wall and the unequal-thickness tube wall.
Example 2:
according to the membrane type water wall tube of the boiler with unequal wall thickness in the embodiment 1, the cross section of the equal-thickness tube wall is in a uniform semi-annular shape, the cross section of the unequal-thickness tube wall is in a special-shaped semi-annular shape with the increased thickness, and the maximum wall thickness of the unequal-thickness tube wall is more than or equal to three-half of the wall thickness of the equal-thickness tube wall.
Example 3:
according to the membrane type water wall tube of the boiler with unequal wall thickness in the embodiment 1, the water wall tube is cylindrical, the central channel is a cylindrical channel which is not coaxial with the water wall tube, and the main body of the water wall tube is a seamless water wall tube or a seam water wall tube.
Example 4:
according to embodiment 1, a plurality of membrane water wall tubes with unequal wall thicknesses are arranged in the same direction and at intervals, and a plurality of fin flat steels are used for connecting two adjacent membrane water wall tubes with unequal wall thicknesses so that the tube walls of all the membrane water wall tubes with unequal wall thicknesses face the smoke side of the inner side 6 of a hearth, thereby effectively avoiding the phenomenon that the membrane water wall is excessively thinned due to scouring and impact caused by smoke. In addition, the water wall pipe can be designed into different lengths and different specifications, the water wall pipe with different channels and specifications can be selected according to specific implementation conditions, the equal-thickness pipe wall and the unequal-thickness pipe wall of the water wall pipe with the same specification have the same structure, different lengths can be spliced according to requirements to meet requirements, end covers are arranged at two ends of the water wall pipe and are coated with the end covers, the end covers are provided with cover eaves corresponding to the outer diameter of the water wall pipe, the end covers mainly play a role in protecting the main body of the water wall pipe in the transportation process, and the water wall pipe is detached during installation.
Claims (3)
1. A film type water wall tube of a boiler with unequal wall thickness comprises the following components: water wall tube, characterized by: the cross section of the water wall tube is in a ring shape with unequal wall thickness and comprises two parts, namely an equal-thickness tube wall and an unequal-thickness tube wall, the equal-thickness tube wall and the unequal-thickness tube wall are surrounded to form a central channel with a circular cross section, the water wall tubes are arranged in the same direction and at intervals, two adjacent water wall tubes are connected through fin flat steel, and the fin flat steel is welded at the transition position of the equal-thickness tube wall and the unequal-thickness tube wall.
2. The variable wall thickness membrane water wall tube for a boiler of claim 1, wherein: the cross section of the equal-thickness pipe wall is in a uniform semi-annular shape, the cross section of the unequal-thickness pipe wall is in a special-shaped semi-annular shape with the increased thickness, and the maximum wall thickness of the unequal-thickness pipe wall is more than or equal to three-half of the wall thickness of the equal-thickness pipe wall.
3. The variable wall thickness membrane water wall tube for a boiler of claim 1, wherein: the water wall pipe is cylindrical, the central channel is a cylindrical channel which is not coaxial with the water wall pipe, and the main body of the water wall pipe is a seamless water wall pipe or a seamed water wall pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020778765.9U CN212157247U (en) | 2020-05-12 | 2020-05-12 | Unequal wall thickness boiler membrane type water wall tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020778765.9U CN212157247U (en) | 2020-05-12 | 2020-05-12 | Unequal wall thickness boiler membrane type water wall tube |
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| CN212157247U true CN212157247U (en) | 2020-12-15 |
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| CN202020778765.9U Active CN212157247U (en) | 2020-05-12 | 2020-05-12 | Unequal wall thickness boiler membrane type water wall tube |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113432145A (en) * | 2021-06-21 | 2021-09-24 | 东方电气集团东方锅炉股份有限公司 | Cold ash bucket with vertical membrane type water-cooled wall of boiler |
-
2020
- 2020-05-12 CN CN202020778765.9U patent/CN212157247U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113432145A (en) * | 2021-06-21 | 2021-09-24 | 东方电气集团东方锅炉股份有限公司 | Cold ash bucket with vertical membrane type water-cooled wall of boiler |
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