CN212747469U - Tube plate of high-pressure corrosion-resistant shell-and-tube reactor - Google Patents
Tube plate of high-pressure corrosion-resistant shell-and-tube reactor Download PDFInfo
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- CN212747469U CN212747469U CN202021619261.9U CN202021619261U CN212747469U CN 212747469 U CN212747469 U CN 212747469U CN 202021619261 U CN202021619261 U CN 202021619261U CN 212747469 U CN212747469 U CN 212747469U
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Abstract
The utility model discloses a tube sheet of high pressure corrosion-resistant type shell-and-tube reactor, tube sheet main part and butt joint ring platform including a body structure, the tube sheet main part is the pie form, and the quantity of butt joint ring platform is two, arranges the edge at two terminal surfaces of tube sheet main part respectively, and the smooth transition of junction of the inner wall of butt joint ring platform and tube sheet main part all is provided with the corrosion-resistant layer of build-up welding on the terminal surface of tube sheet main part and the corresponding internal surface of butt joint ring platform, and the middle part of tube sheet main part is provided with the cloth hole district, and it has a plurality of tube holes that run through tube sheet main part and build-up welding corrosion-resistant layer to. The utility model discloses convenient to use, sealing performance is good, and is difficult for corroding, has apparent economic value and social value.
Description
Technical Field
The utility model relates to a chemical industry equipment technical field, concretely relates to major diameter tube sheet of high pressure corrosion-resistant type shell and tube reactor.
Background
The shell-and-tube reactor is one kind of heat exchanger, also called tubular heat exchanger, and is a dividing wall type heat exchanger using the wall surface of tube bundle sealed in the shell as heat transfer surface, and has the advantages of simple structure, low cost, wide circulation cross section and easy cleaning of scale. The shell-and-tube reactor is composed of a shell, a heat transfer tube bundle, tube plates, tube boxes and other parts, wherein the tube plates are used for fixing the tube bundle and separating media on two sides of the tube plates to prevent the media on the tube shell side from contacting, and under most conditions, two different media environments are arranged on two sides of the tube plates and have different pressures and temperatures, so that the thickness of the tube plates is thicker, and along with the development of the chemical industry, chemical equipment is also developed towards the large-scale direction, so that the diameter of the tube plates is also increased.
Because the pressure, the temperature and the corrosion condition of the medium on the two sides of the large-diameter tube plate are different, especially when the corrosivity of the medium in the heat exchanger is large and the pressure and the temperature are high, the working environment of the large-diameter tube plate is extremely severe, the large-diameter tube plate is the most severely corroded area in the whole equipment and is one of the parts which are most easily deformed and damaged, the service life is short, the overhauling and replacing frequency is high, the running cost of the equipment is increased, and meanwhile, the normal operation of the whole production system is influenced due to the long construction period required by the overhauling and replacing of the tube plate, so that certain economic loss is caused. In addition, current tube sheet is many to be the flange use concurrently, or pass through bolted connection with the shell side, or with shell side barrel angular joint, the leak source of medium leakage has been increased on the one hand, on the other hand is for butt weld, the nondestructive test of fillet weld is mostly surface detection, internal quality can not be ensured, the atress condition of fillet weld is relatively poor, current tube sheet structure if only be used for the heat transfer of medium can, but if the medium still need participate in certain reaction, and the great pressure of diameter is higher, the demand of equipment long-term steady operation just can not be satisfied to these structures. Therefore, it is objectively needed to develop a large-diameter tube plate of a high-pressure corrosion-resistant shell-and-tube reactor with reasonable structural design, difficult damage and long service life.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a structural design is reasonable, and is not fragile, long service life's high-pressure corrosion-resistant type shell-and-tube reactor's major diameter tube sheet.
The utility model aims at realizing like this, including the tube sheet main part and the butt joint ring platform of a body structure, the tube sheet main part is the pie, the quantity of butt joint ring platform is two, arrange the edge of two terminal surfaces about the tube sheet main part respectively, the inner wall of butt joint ring platform and the junction rounding off of tube sheet main part, all be provided with the resistant layer of corroding of build-up welding on the terminal surface of tube sheet main part and the corresponding internal surface of butt joint ring platform, the middle part of tube sheet main part is provided with the cloth hole district, processing has a plurality of tube holes that run through tube sheet main part and the resistant layer of corroding of build-up welding in the cloth hole district.
Furthermore, the diameter of the tube plate main body is D, the size of D is 3000-5000 mm, the total height of the tube plate main body and the butt joint ring platform is H, the size of H is 200-400 mm, the thickness of the butt joint ring platform is L, the size of L is 80-150 mm, the height of the butt joint ring platform is H, and the size of H is 60-100 mm.
Further, the thickness of the surfacing corrosion-resistant layer is 6-8 mm.
Furthermore, the surfacing corrosion-resistant layer comprises a transition layer and a surface layer, and the thickness of the surface layer is not less than 3 mm.
Furthermore, the radius of a transition arc between the inner wall of the butt joint annular table and the tube plate main body is 20-40 mm.
Furthermore, a first exhaust hole is formed in the side face of the tube plate main body, and a second exhaust hole communicated with the first exhaust hole is formed in the end face, opposite to the surfacing corrosion-resistant layer, of the tube plate main body.
Furthermore, a butt joint groove is processed on the end face of the butt joint ring platform.
Furthermore, the pipe holes are distributed in a regular triangle arrangement mode.
The utility model has the advantages of reasonable design, the edge at two terminal surfaces of tube sheet main part has set up the butt joint ring platform, when using, through two butt joint ring platforms respectively with tube side barrel and shell side barrel butt joint welding, for traditional angle joint welding or flange joint, it is more convenient during welding operation, the welding seam can carry out supersound, nondestructive test such as ray, the internal quality can be ensured, the welding seam quality is better, the atress condition is better, and the numerous and diverse structure of flange, gasket and bolt nut has been removed, both can reduce the manufacturing cost of equipment, can also reduce the medium leak source of equipment, improve the leakproofness of equipment and the reliability of operation, applicable in large diameter reaction type container; secondly, the surfacing corrosion-resistant layer is arranged on the surface of the tube plate on one side of the corrosion medium, so that the corrosion of the surface of the tube plate can be avoided, and the service life of the tube plate is prolonged. The utility model discloses convenient to use, sealing performance is good, and is difficult for corroding, has apparent economic value and social value.
Drawings
Fig. 1 is a schematic view of the structure of the present invention;
fig. 2 is a schematic top view of the present invention;
FIG. 3 is a schematic structural view of a tube plate main body and a surfacing corrosion-resistant layer according to the present invention;
fig. 4 is a schematic view of the arrangement of pipe holes in the present invention;
in the figure: 1-tube plate main body, 2-butt joint ring table, 3-surfacing corrosion-resistant layer, 4-tube hole, 5-transition layer, 6-surface layer, 7-first exhaust hole and 8-second exhaust hole.
Detailed Description
The present invention will be further described with reference to the accompanying drawings, but the present invention is not limited in any way, and any changes or improvements based on the present invention are all within the protection scope of the present invention.
As shown in fig. 1-4, the utility model discloses a tube sheet main part 1 and butt joint ring platform 2 of integrative structure, tube sheet main part 1 is the cake form, the quantity of butt joint ring platform 2 is two, arrange the edge of two terminal surfaces about tube sheet main part 1 respectively, the inner wall of butt joint ring platform 2 and the junction rounding off of tube sheet main part 1, all be provided with build-up welding corrosion-resistant layer 3 on a terminal surface of tube sheet main part 1 and the corresponding internal surface of butt joint ring platform 2, the middle part of tube sheet main part 1 is provided with the cloth hole district, it has a plurality of tube holes 4 that run through tube sheet main part 1 and build-up welding corrosion-resistant layer 3 to process in the cloth hole district.
The utility model has the advantages of reasonable design, the edge of two terminal surfaces in tube sheet main part 1 has set up butt joint ring platform 2, when using, through two butt joint ring platforms 2 respectively with tube side barrel and shell side barrel butt joint welding, for traditional angle joint welding or flange joint, it is more convenient during welding operation, the welding seam can carry out the nondestructive test such as supersound, ray, the internal quality can be ensured, the welding seam quality is better, the atress condition is better, and the numerous and diverse structure of flange, gasket and bolt nut has been removed from, both can reduce the manufacturing cost of equipment, can also reduce the medium leak source of equipment, improve the leakproofness of equipment and the reliability of operation, applicable to large diameter reaction type container; secondly, the surfacing anti-corrosion layer 3 is arranged on the surface of the tube plate on one side of the corrosion medium, so that the corrosion of the surface of the tube plate can be avoided, and the service life of the tube plate is prolonged.
The diameter of the tube plate main body 1 is D, the size of D is 3000-5000 mm, the total height of the tube plate main body 1 and the butt joint annular table 2 is H, the size of H is 200-400 mm, the thickness of the butt joint ring platform 2 is L, the size of L is 80-150 mm, the height of the butt joint ring platform 2 is H, the size of H is 60-100 mm, the diameter D of a tube plate main body 1 of a methanol synthesis tower of a certain factory is 4000mm, the total height H of the tube plate main body 1 and the butt joint ring platform 2 is 300mm, the thickness L of the butt joint ring platform 2 is 110mm, the height h of the butt joint ring platform 2 is 85mm, and years of normal operation prove that when the pipe plate of the utility model is adopted, the butt welding seam between the butt joint ring platform 2 and the tube shell side cylinder body is good in quality, the corrosion resistance of the surfacing corrosion-resistant layer 3 is strong, the service life of the tube plate is long, the frequency of maintenance and replacement is low, the operation cost of the equipment is greatly reduced, and the long-term stable operation requirement of the equipment can be met.
In order to ensure the corrosion resistance of the surfacing corrosion-resistant layer 3, the thickness of the surfacing corrosion-resistant layer 3 is generally 6-8 mm, the surfacing corrosion-resistant layer 3 comprises a transition layer 5 and a surface layer 6, and the thickness of the surface layer 6 is not less than 3 mm.
The radius R of a transition arc between the inner wall of the butt joint annular table 2 and the tube plate main body 1 is 20-40 mm, and the radius of the transition arc can be selected according to the actual size of each part of the tube plate.
Processing has first exhaust hole 7 on the side of tube sheet main part 1, processing has the second exhaust hole 8 with first exhaust hole 7 intercommunication on the tube sheet main part 1 terminal surface relative with build-up welding corrosion-resistant layer 3, first exhaust hole 7 and second exhaust hole 8 are the intercommunication structure, when equipment is vertical equipment, gas in the shell side can be discharged in second exhaust hole 8 and the first exhaust hole 7 of the tube sheet that is located the top, and in the same way, liquid in the shell side can be discharged in second exhaust hole 8 and the first exhaust hole 7 of the tube sheet that is located the below.
In order to facilitate welding, a butt joint groove is machined on the end face of the butt joint ring platform 2, and the form, structure and size of the butt joint groove can be determined according to relevant standards, regulations and actual welding requirements.
The holes 4 are preferably arranged in a regular triangular arrangement, and may be square or other suitable hole arrangement, if desired.
Claims (8)
1. A tube plate of a high-pressure corrosion-resistant shell-and-tube reactor is characterized in that: tube sheet main part (1) and butt joint ring platform (2) including integrative structure, tube sheet main part (1) is the cake form, the quantity of butt joint ring platform (2) is two, arranges the edge of two terminal surfaces about tube sheet main part (1) respectively, the smooth and sly transition of junction of inner wall and tube sheet main part (1) of butt joint ring platform (2), all be provided with build-up welding corrosion resistant layer (3) on the terminal surface of tube sheet main part (1) and the corresponding internal surface of butt joint ring platform (2), the middle part of tube sheet main part (1) is provided with the cloth hole district, and processing has a plurality of tube holes (4) that run through tube sheet main part (1) and build-up welding corrosion resistant layer (3) in the cloth hole district.
2. The tube plate of the high-pressure corrosion-resistant shell-and-tube reactor according to claim 1, wherein the diameter of the tube plate body (1) is D, the size of D is 3000-5000 mm, the total height of the tube plate body (1) and the butt joint ring platform (2) is H, the size of H is 200-400 mm, the thickness of the butt joint ring platform (2) is L, the size of L is 80-150 mm, the height of the butt joint ring platform (2) is H, and the size of H is 60-100 mm.
3. The tube plate of the high-pressure corrosion-resistant shell-and-tube reactor according to claim 1, wherein the thickness of the surfacing corrosion-resistant layer (3) is 6-8 mm.
4. A tube plate of a high pressure corrosion-resistant shell-and-tube reactor according to claim 1, characterized in that the surfacing corrosion-resistant layer (3) comprises a transition layer (5) and a facing layer (6), and the thickness of the facing layer (6) is not less than 3 mm.
5. The tube plate of the high-pressure corrosion-resistant shell-and-tube reactor according to claim 1, wherein the radius R of a transition arc between the inner wall of the butt-joint annular table (2) and the tube plate body (1) is 20-40 mm.
6. The tube plate of the high-pressure corrosion-resistant shell-and-tube reactor according to claim 1, wherein a first exhaust hole (7) is formed in the side surface of the tube plate body (1), and a second exhaust hole (8) communicated with the first exhaust hole (7) is formed in the end surface of the tube plate body (1) opposite to the surfacing corrosion-resistant layer (3).
7. The tube plate of the high-pressure corrosion-resistant shell-and-tube reactor according to claim 1, wherein the end face of the butt-joint annular table (2) is provided with a butt-joint groove.
8. The tube sheet of a high-pressure corrosion-resistant shell-and-tube reactor according to claim 1, wherein the tube holes (4) are arranged in a regular triangle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021619261.9U CN212747469U (en) | 2020-08-06 | 2020-08-06 | Tube plate of high-pressure corrosion-resistant shell-and-tube reactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021619261.9U CN212747469U (en) | 2020-08-06 | 2020-08-06 | Tube plate of high-pressure corrosion-resistant shell-and-tube reactor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212747469U true CN212747469U (en) | 2021-03-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021619261.9U Active CN212747469U (en) | 2020-08-06 | 2020-08-06 | Tube plate of high-pressure corrosion-resistant shell-and-tube reactor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212747469U (en) |
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2020
- 2020-08-06 CN CN202021619261.9U patent/CN212747469U/en active Active
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