CN210085926U - Wide steel energy-saving drying cylinder for paper machine - Google Patents
Wide steel energy-saving drying cylinder for paper machine Download PDFInfo
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- CN210085926U CN210085926U CN201822185387.9U CN201822185387U CN210085926U CN 210085926 U CN210085926 U CN 210085926U CN 201822185387 U CN201822185387 U CN 201822185387U CN 210085926 U CN210085926 U CN 210085926U
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- paper machine
- drying cylinder
- shell
- end cover
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 74
- 239000010959 steel Substances 0.000 title claims abstract description 74
- 238000001035 drying Methods 0.000 title claims description 30
- 238000003466 welding Methods 0.000 claims description 21
- 238000009413 insulation Methods 0.000 claims description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 238000004804 winding Methods 0.000 claims description 3
- 238000004321 preservation Methods 0.000 abstract description 7
- 238000005265 energy consumption Methods 0.000 abstract description 6
- 230000008878 coupling Effects 0.000 abstract 1
- 238000010168 coupling process Methods 0.000 abstract 1
- 238000005859 coupling reaction Methods 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 21
- 239000000463 material Substances 0.000 description 10
- 229910001018 Cast iron Inorganic materials 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000033001 locomotion Effects 0.000 description 3
- 229920006395 saturated elastomer Polymers 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000011491 glass wool Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000011490 mineral wool Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000007514 turning Methods 0.000 description 1
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Abstract
The utility model relates to an energy-conserving dryer of broad width steel for paper machine, the casing comprises multistage steel ring coaxial coupling in proper order, and every steel ring is made and the surface is provided with the axial weld by the steel sheet coiling, has the contained angle that makes the two dislocation between the axial weld of two adjacent steel rings. The utility model discloses in, through mutually supporting of steel, vortex stick, siphon ware, heat preservation etc., make shell surface temperature improve 6 ~ 10 degrees, the energy consumption reduces 5%, very big thermal efficiency improvement has reduced the energy consumption.
Description
The technical field is as follows:
the utility model belongs to the technical field of dryer structural improvement, in particular to energy-conserving dryer of broad width steel for paper machine.
Background art:
drying cylinders are the key parts for paper drying, and at present, most drying cylinders are made of cast iron materials, and the number of the drying cylinders accounts for about 2/3 of the total number of pressure vessels in the paper industry. The structure of the drying cylinder is as follows: the steam turbine comprises a shell, turbulence rods, a siphon, end covers and a shaft head, wherein the end covers are respectively arranged at two ends of the shell, the shaft head is arranged at the center of each end cover, a channel for introducing saturated steam into the shell and a channel communicated with the siphon arranged in the shell are arranged in each shaft head, and the turbulence rods are axially arranged on the inner wall of the shell at intervals. During the use, saturated steam lets in the casing and in the casing condensation, and the heat that releases makes casing surface temperature rise, will coat the paper heating of casing outer wall surface operation, and the paper is dried under the effect of high temperature. With the development of science and technology, cast iron is gradually replaced by steel, the wall thickness of a cylinder body and a cylinder cover of a steel drying cylinder is greatly reduced, the quality of the cylinder body is less than half of that of the cast iron drying cylinder, and the cost is greatly reduced. In practical application, the existing steel drying cylinder can be further optimized in the aspects of length, diameter, heat preservation, water resistance film and the like.
The utility model has the following contents:
the utility model aims to overcome the not enough of prior art, provide structure scientific and reasonable and optimize through welding optimization, heat preservation and water resistant membrane optimize the energy-conserving dryer of broad width steel for the papermaking machine that raises the thermal efficiency.
The utility model adopts the technical proposal that:
the utility model provides an energy-conserving dryer of broad width steel for paper machine, includes casing, end cover and spindle nose, and the end cover is installed respectively at the casing both ends, and every end cover center department sets up spindle nose, its characterized in that: the shell is formed by sequentially and coaxially connecting a plurality of steel rings, each steel ring is made by winding a steel plate, an axial welding line is arranged on the surface of each steel ring, and an included angle enabling the two steel rings to be staggered is formed between the axial welding lines of the two adjacent steel rings.
Moreover, the inner edge of the shell is provided with the turbulence rods at intervals, an included angle is formed between each turbulence rod and the axis of the shell, and the value range of the included angle is 5-15 degrees.
Furthermore, the diameter of the steel ring is 1.5-3 meters, and the width of the steel ring is more than or equal to 8 meters.
Furthermore, the inner wall of the shell is uniformly and radially provided with 10-50 turbulence bars which are made of aluminum materials, copper materials or steel materials.
Furthermore, the cross-sectional dimension of the spoiler bar is 40 × 50 square millimeters.
Furthermore, the wall thickness of the steel ring is 23-25 mm.
Furthermore, the outer side ends of the two steel rings positioned at the two sides are provided with outward extending edges which integrally extend towards the outer side of the end cover,
furthermore, a plurality of rib plates are arranged on the end face of the outer side of the end cover, heat insulation plates are filled between every two adjacent rib plates, a cover plate is buckled on every two adjacent rib plates, the side edges of every two adjacent cover plates are in contact, the outer edge of every cover plate is in contact with the outward extending edge, and the inner edge of every cover plate is in contact with the outer edge of the shaft head.
And a concave ring is arranged on the inner wall of the shell close to the outward extending edge, a protrusion arranged in an aligned mode of the end cover is clamped on the outward end face of the concave ring, wedge-shaped inclined edges are arranged on the outer edges of the end covers on two sides of the protrusion, and the two wedge-shaped inclined edges are respectively welded and fixed with the inner wall of the shell on two sides of the concave ring.
And moreover, the width of the welding seams at the two sides of the end cover is larger than 1-1.5 times of the thickness of the shell, and the opening angle of the welding seams at the two sides of the end cover is 40-50 degrees.
The utility model discloses the technical effect who gains is:
the utility model discloses in, the casing comprises a plurality of welded steel rings in proper order, certain contained angle has between the welding seam of two adjacent steel rings self, make holistic intensity can improve, set up the vortex stick of different quantity according to the difference of casing diameter in addition, the comdenstion water film that forms when cutting off the high-speed rotation of casing by it, can also set up fixed siphon ware or rotatory siphon ware in the casing, further reduce the influence of comdenstion water to casing surface temperature, improve thermal transmission, the end cover outside surface that has the casing both ends is provided with the heat preservation again, make end cover department heat scatter and disappear and reduce by a wide margin, thereby improved heat and concentrated in casing department, through steel, the vortex stick, siphon ware, mutually supporting of heat preservation etc., make casing surface temperature improve 6 ~ 10 degrees, the energy consumption reduces 5%, very big raising the heat efficiency, the energy consumption is reduced.
Description of the drawings:
FIG. 1 is an overall structure of the present invention;
FIG. 2 is an enlarged axial view of the end cap of FIG. 1 with the end cap removed;
FIG. 3 is an enlarged view of section I of FIG. 2;
FIG. 4 is a schematic diagram of a condensate water film during clockwise rotation of FIG. 1;
FIG. 5 is an enlarged view of section II of FIG. 4;
FIG. 6 is a schematic view of a fixed syphon;
FIG. 7 is a schematic view of a rotary siphon;
FIG. 8 is a schematic structural view of the end cap to shell weld;
FIG. 9 is an enlarged view of section III of FIG. 8;
FIG. 10 is a schematic view of the end cap with ribs and insulation;
FIG. 11 is a schematic view of the cover plate of FIG. 10;
FIG. 12 is a view from the direction A of FIG. 4;
fig. 13 is a view from direction B of fig. 4.
The specific implementation mode is as follows:
the present invention is further illustrated by the following examples, which are intended to be illustrative, not limiting and are not intended to limit the scope of the invention.
The utility model provides an energy-conserving dryer of broad width steel for paper machine, as shown in fig. 1-11, including casing, end cover 17, spindle nose 11, vortex stick 13 and siphon 18, the end cover is installed respectively at the casing both ends, and end cover center department sets up the spindle nose, radially equipartition sets up a plurality of vortex sticks in the casing inner wall surface, is provided with the siphon in the casing, the utility model discloses an innovation lies in, the casing is connected by multistage steel ring 5, 6, 8, 9 welding 7 in proper order and is formed, and every steel ring is made by steel sheet 4 coiling and the surface has axial welding seam 3, has the contained angle β that makes the two dislocation between the axial welding seam of two adjacent steel rings.
In this embodiment, if the axial welds are all on the same straight line, the overall strength is affected, so the adjacent axial directions have a certain included angle, and when the shell is longer, the included angle also avoids the problem that some two welds are still on the same straight line, where β is 30 to 50 degrees, that is, the central angle between the projection point of any one point of the two adjacent axial welds at the joint of the weld 7 and the circle where the joint is located is 30 to 50 degrees.
The steel ring is made by welding after winding a Q345R steel plate. The saturated steam line and the drain line can pass through the space 12 in the stub shaft and into the interior of the housing.
The diameter of steel ring is 1.5 ~ 3 meters, and the total width after all steel rings are assembled is at 8 ~ 10 meters, and the total width more than ten meters is also possible certainly, and specific width is decided according to the production needs.
As the size of the shell is larger, the amount of condensed water generated in the operation of the drying cylinder is very large, and researches show that the drying cylinder with the diameter of 1.5 meters forms a water film when the vehicle speed is 500m/min, the heat resistance of the water film is about 40 times of that of a steel medium, and the surface temperature of the shell can be greatly reduced. Therefore, a turbulence bar from the vicinity of the end cover on one side to the vicinity of the end cover on the other side is arranged in the shell, and the turbulence bar is specifically as follows: the inner wall after all steel rings are assembled is radially evenly distributed with 10-50 turbulence bars, the surface of each turbulence bar, which is attached to the inner wall of the shell, is an outer convex arc matched with the inner wall of the shell, so that the connection between the turbulence bars and the shell is more compact, the two sides of each turbulence bar are fixed by welding 14, and the cross section of each turbulence bar is 40 multiplied by 60 square millimeters. Besides the welding fixing mode, a hoop can be arranged on the inner wall of the shell in advance, and then the spoiler bar is fixed on the inner wall of the shell through the hoop.
The number and size of the turbulence bars are selected based on the principle that the accumulated condensed water 15 does not overflow, such as: the diameter is 1800 mm series, the number of the turbulence rods is 24-30, the width of the turbulence rods is 49mm, and the height of the turbulence rods is 59 mm; 35-40 wide drying cylinder turbulence bars with the diameter of 3 meters are needed, the average temperature of the surface of the shell can be increased by 6-10 ℃ through the arrangement of the turbulence bars, the thermal efficiency is increased, and the energy-saving effect is achieved.
The material of the turbulence bar is solid heat conduction material, such as corrosion-resistant aluminum material, copper material and steel material, and is determined according to the strength rigidity and the heat transfer performance of the wide drying cylinder, such as: when the width of the shell reaches more than 9 meters, a steel turbulence bar is selected. The turbulence bars can reduce the formation of water films and improve the mechanical strength of the shell.
More preferred embodiments are: the turbulence bars are arranged in an inclined state, namely an included angle is formed between each turbulence bar and the projection of the axis of the shell of the drying cylinder on the shell at the position of the turbulence bar. The specific structure is shown in fig. 12 and 13:
in fig. 12, the projection of the axis of the shell on the shell at the turbulence bar is 29, and the included angle between the axis of the shell and the turbulence bar is 5-15 degrees, which is 15 degrees in the figure. The condensate 15 accumulates on the side of the spoiler stick 13, which, because of its upward movement in the figure (see a for the clockwise turning housing in fig. 4), flows along the inclined spoiler stick to the right, where it is collected and drained by the siphon at the right end cap.
In fig. 13, unlike fig. 12, the spoiler is moved downward (refer to B of the clockwise rotation housing in fig. 4), so that the condensed water is accumulated on the other side of the spoiler and flows to the left side, and when it reaches the vicinity of the left end cover, the condensed water is collected and discharged by the siphon at the position.
The oblique arrangement of the spoiler bars of fig. 12 and 13 has the advantages that: through fluid motion theoretical analysis, because the vortex rod is inclined, the lateral flow speed of the condensed water is increased, the inclined volume force load of the condensed water is increased, when the drying cylinder rotates at a high speed, the condensed water rapidly flows to the siphon device, and the siphon effect of the condensed water discharge can be improved by 10-20%.
The wall thickness of steel ring is 23 ~ 25 millimeters, compares with the 28 ~ 30 millimeters of cast iron wall thickness, and weight is lighter, but intensity is higher. Compared with the steel drying cylinders with different sizes, the weight of the steel drying cylinders with different sizes is reduced by 2-4 tons, the weight is reduced by 10-15%, and materials are saved.
The siphon should be selected according to the movement of condensed water, and the fixed siphon shown in FIG. 6 can be selected for low speed and no water ring, and the rotary siphon shown in FIG. 7 can be selected for high speed drying cylinder with water ring formed. The siphon unit may be provided only at one end cap, or both end caps may be provided, and in order to match the structure shown in fig. 12 and 13, the siphon unit needs to be provided at both end caps.
As shown in fig. 8 and 9, the outer ends of the two steel rings at both sides are provided with overhanging edges 16 integrally extending to the outer side of the end cover, and the axial width of the overhanging edges is 30-50 mm. The end cover is arranged at the integral connection position of the extending edge and the shell, and the installation structure of the end cover is as follows: a concave ring 26 is arranged on the inner wall of the shell close to the extending edge, a protrusion 25 arranged in an aligned mode of the end cover is clamped on the outward end face of the concave ring, wedge-shaped inclined edges 27 are arranged on the outer edges of the end covers on two sides of the protrusion, and the two wedge-shaped inclined edges are respectively welded 21 and 22 with the inner wall of the shell on two sides of the concave ring to be fixed. The width f of the welding seams at the two sides of the end cover is larger than 1-1.5 times of the thickness delta c of the shell, and the opening angle of the welding seams at the two sides of the end cover is 40-50 degrees, preferably 45 degrees. The width and the opening angle of the welding line accord with the relevant regulations of GB 150 steel pressure container, and the mutual matching of the welding line, the concave ring and the bulge at the two sides can solve the problem of a high stress area at the joint of the end cover and the shell.
The end face of the outer side of the end cover is provided with a plurality of ribbed plates 28, an insulation board 23 is filled between every two adjacent ribbed plates, the insulation board is provided with an outer frame 20, and the outer frame and a rock wool or superfine glass wool layer in the outer frame are pasted on the end face of the outer side of the end cover together. Two adjacent ribbed slabs spiral-lock a apron 2, and two adjacent apron sides 1 contact, and the outer fringe of every apron imbeds in the sunken 19 that the overhanging limit outside terminal surface was made, and the inner fringe of every apron contacts with the spindle nose outer fringe, and the apron is fixed through little bolt 10 and ribbed slab. The rib plates can be made of steel plates or channel steel, the number of the vertical beams is eight, the number of the heat-insulating plates is eight, and the cover plate is made of thin steel plates, and the inner side surfaces 24 of the thin steel plates are in close contact with heat-insulating materials in the heat-insulating plates. Through the setting of heated board, reduced the heat dissipation of end cover department, can reduce 5% calorific loss at least.
In order to ensure the hardness and the smoothness of the surface of the drying cylinder, the surface is processed after the drying cylinder is installed, firstly, finish machining is carried out on a machine tool, and surface coating is carried out.
The utility model discloses in, the casing comprises a plurality of welded steel rings in proper order, certain contained angle has between the welding seam of two adjacent steel rings self, make holistic intensity can improve, set up the vortex stick of different quantity according to the difference of casing diameter in addition, especially cut off the comdenstion water film that forms when the casing is high-speed rotatory, can also set up fixed siphon ware or rotatory siphon ware in the casing, further reduce the influence of comdenstion water to casing surface temperature, improve thermal transmission, the end cover outside surface that has the casing both ends is provided with the heat preservation again, make end cover department heat scatter and disappear and reduce by a wide margin, thereby improved the heat and concentrated in casing department, through steel, the vortex stick, siphon ware, mutually supporting of heat preservation etc., make casing surface temperature improve 6 ~ 7 degrees, the energy consumption reduces 5%, very big thermal efficiency, the energy consumption is reduced.
Claims (10)
1. The utility model provides an energy-conserving dryer of broad width steel for paper machine, includes casing, end cover and spindle nose, and the end cover is installed respectively at the casing both ends, and every end cover center department sets up spindle nose, its characterized in that: the shell is formed by sequentially and coaxially connecting a plurality of steel rings, each steel ring is made by winding a steel plate, an axial welding line is arranged on the surface of each steel ring, and an included angle enabling the two steel rings to be staggered is formed between the axial welding lines of the two adjacent steel rings.
2. The wide-width steel energy-saving drying cylinder for the paper machine as claimed in claim 1, characterized in that: turbulence bars are arranged on the inner edge of the shell at intervals, an included angle is formed between each turbulence bar and the axis of the shell, and the value range of the included angle is 5-15 degrees.
3. The wide-width steel energy-saving drying cylinder for the paper machine as claimed in claim 1, characterized in that: the diameter of the steel ring is 1.5-3 meters, and the width of the steel ring is more than or equal to 8 meters.
4. The wide steel energy-saving drying cylinder for the paper machine as claimed in claim 1, 2 or 3, characterized in that: radially the equipartition is fixed with 10 ~ 50 vortex sticks on the shells inner wall, and this vortex stick uses aluminum product, copper product or steel to make.
5. The wide steel energy-saving drying cylinder for the paper machine as claimed in claim 4, characterized in that: the cross-sectional dimension of the spoiler is 40 x 60 square millimeters.
6. The wide steel energy-saving drying cylinder for the paper machine as claimed in claim 4, characterized in that: the wall thickness of the steel ring is 23-25 mm.
7. The wide steel energy-saving drying cylinder for the paper machine as claimed in claim 1, 2, 3, 5 or 6, characterized in that: the outer side ends of the two steel rings positioned at the two sides are provided with outward extending edges which integrally extend towards the outer side of the end cover.
8. The wide steel energy-saving drying cylinder for the paper machine as claimed in claim 7, characterized in that: the end face of the outer side of the end cover is provided with a plurality of rib plates, an insulation board is filled between every two adjacent rib plates, the two adjacent rib plates are buckled with a cover plate, the side edges of the two adjacent cover plates are in contact, the outer edge of each cover plate is in contact with the outward extending edge, and the inner edge of each cover plate is in contact with the outer edge of the shaft head.
9. The wide steel energy-saving drying cylinder for the paper machine as claimed in claim 8, characterized in that: the inner wall of the shell, which is close to the overhanging edge, is provided with a concave ring, the outward end surface of the concave ring is clamped with a bulge arranged by aligning the end cover, the outer edges of the end covers at two sides of the bulge are arranged into wedge-shaped inclined edges, and the two wedge-shaped inclined edges are respectively welded and fixed with the inner wall of the shell at two sides of the concave ring.
10. The wide steel energy-saving drying cylinder for the paper machine as claimed in claim 9, characterized in that: the width of the welding seams on the two sides of the end cover is larger than 1-1.5 times of the thickness of the shell, and the opening angle of the welding seams on the two sides of the end cover is 40-50 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822185387.9U CN210085926U (en) | 2018-12-25 | 2018-12-25 | Wide steel energy-saving drying cylinder for paper machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822185387.9U CN210085926U (en) | 2018-12-25 | 2018-12-25 | Wide steel energy-saving drying cylinder for paper machine |
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| Publication Number | Publication Date |
|---|---|
| CN210085926U true CN210085926U (en) | 2020-02-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201822185387.9U Active CN210085926U (en) | 2018-12-25 | 2018-12-25 | Wide steel energy-saving drying cylinder for paper machine |
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| Country | Link |
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| CN (1) | CN210085926U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109505184A (en) * | 2018-12-25 | 2019-03-22 | 卞学询 | Paper machine wide cut steel energy conservation drying cylinder |
-
2018
- 2018-12-25 CN CN201822185387.9U patent/CN210085926U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109505184A (en) * | 2018-12-25 | 2019-03-22 | 卞学询 | Paper machine wide cut steel energy conservation drying cylinder |
| CN109505184B (en) * | 2018-12-25 | 2024-02-20 | 诸城大正机械科技有限公司 | Wide-width energy-saving steel drying cylinder for paper machine |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220112 Address after: 262200 meters east of the intersection of Industrial Avenue and Xinghua Road, Mizhou street, Zhucheng City, Weifang City, Shandong Province Patentee after: ZHUCHENG DAZHENG MACHINERY CO.,LTD. Address before: 300040 No. 1737, building 3, Guidu building, Yingkou Road, Heping District, Tianjin Patentee before: Zhang Jing |
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| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240112 Address after: 262200 East End of Xinghua East Road, East Side of Industrial Avenue, Mizhou Street, Zhucheng City, Weifang City, Shandong Province Patentee after: Zhucheng Dazheng Machinery Technology Co.,Ltd. Address before: 262200 meters east of the intersection of Industrial Avenue and Xinghua Road, Mizhou street, Zhucheng City, Weifang City, Shandong Province Patentee before: ZHUCHENG DAZHENG MACHINERY CO.,LTD. |