CN202195595U - Flexible pipe plate structure for fire tube boiler - Google Patents
Flexible pipe plate structure for fire tube boiler Download PDFInfo
- Publication number
- CN202195595U CN202195595U CN201120298437XU CN201120298437U CN202195595U CN 202195595 U CN202195595 U CN 202195595U CN 201120298437X U CN201120298437X U CN 201120298437XU CN 201120298437 U CN201120298437 U CN 201120298437U CN 202195595 U CN202195595 U CN 202195595U
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- CN
- China
- Prior art keywords
- pipe plate
- tube sheet
- thickness
- straight section
- flexible tubesheet
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Abstract
The utility model relates to a flexible pipe plate structure for a fire tube boiler, which is used for recycling waste heat, sulphur and waste acid of acid manufacture of brim stone. A flexible pipe plate is formed of a thick straight section, a transition section and a thin flat pipe plate, wherein the thickness of the thick straight section is larger than that of the thin flat pipe plate, the transition section is in an arc shape, the thickness of one end of the transition section is equal to that of the thick straight section, the thickness of the transition section gradually changes from thick to thin, and the thickness of the other end of the transition section is equal to that of the thin flat pipe plate. Thus, a pipe plate outer side arc transition and a pipe plate inner side arc transition are formed. A cylinder body of the fire tube boiler is welded with the thick straight section, and two ends of a pipe penetrate through the thin flat pipe plate of the flexible pipe plate to be welded with the flexible pipe plate. The flexible pipe plate structure has the advantages that the thickness can be reduced to reduce temperature of surface of the pipe plate; temperature difference stress on two sides is small; thin pipe plates are in curve shapes, have certain elasticity and can absorb hot extending quantity when a smoke pipe is heated; a casing of the boiler is not required for expansion joints, thereby being suitable for fire tube boilers manufacturing acid with brim stone at high temperature and high pressure.
Description
Technical field
The utility model relates to acid production with sulphur waste heat recovery, sulfur recovery, the used multitubular boiler of spent acid recovery, the flexible tubesheet structure of the multitubular boiler that especially wherein comprises.
Background technology
In the residual neat recovering system of acid production with sulphur, sulfur recovery, acid-restoring plant, with the most use with the shell-and-tube multitubular boiler, tube sheet is one of its main parts size.Because the condition of work of tube sheet is very harsh, should bear high pressure, stands the erosion of high-temperature medium again.High pressure and high temperature are contradiction to the required value of tube plate thickness, and the high pressure requirement tube sheet is thicker, and the high temperature requirement tube sheet book is good more more, book temperature difference heat stress is more little more.Therefore, be necessary to design a kind of multitubular boiler flexible tubesheet structure can be high pressure resistant again can the high temperature resistance medium erosion.
Summary of the invention
The utility model technical problem to be solved is to provide a kind of flexible tubesheet structure of multitubular boiler, is specially adapted to the acid production with sulphur multitubular boiler under high temperature, the high pressure.
The utility model solves the problems of the technologies described above the technical scheme of being taked: a kind of flexible tubesheet structure of multitubular boiler, multitubular boiler are used for acid production with sulphur waste heat recovery, sulfur recovery, spent acid recovery, are densely covered with most pores on the flexible tubesheet of multitubular boiler; Pipe pass flexible tubesheet pore and with its welding, described flexible tubesheet is made up of thick straight section, changeover portion and Boping tube sheet, wherein; The flat tube sheet of the thinner thickness of described thick straight section is thick; Changeover portion is a circular arc, one of which end and thick straight section uniform thickness, and thickness is gradually by thick attenuation; The other end and Boping tube sheet uniform thickness; Form tube sheet outer arc transition and the transition of tube sheet inner arc, the thick straight section welding of the cylindrical shell of multitubular boiler and flexible tubesheet, the Boping tube sheet of flexible tubesheet and welding are with it all passed in the two ends of pipe.
This flexible tubesheet structure has that compressive resistance height, tube sheet surface temperature difference stress are little, tube sheet has certain elasticity, the characteristic of the thermal stretching amount in the time of can absorbing smoke pipe and be heated.
On the basis of such scheme, described multitubular boiler is the following multitubular boiler of design pressure 7.3MPa, for the supporting high parameter multitubular boiler of the waste heat recovery of large-scale sulphur-burning sulphuric acid plant provides design basis.
On the basis of such scheme, described flexible tubesheet is shaped through machining by same block plate.
The beneficial effect of the utility model is:
1, compare with common flat tube sheet, thickness can subtract book, makes that the surface temperature of tube sheet is low; Temperature difference stress is little, because tube sheet is thinner, shape is again a shaped form simultaneously; Has certain elasticity; Thermal stretching amount in the time of can absorbing smoke pipe and be heated, boiler shell need not established expansion joint, is specially adapted to the acid production with sulphur multitubular boiler under high temperature, the high pressure;
2, with the flexible tubesheet ratio of existing butterfly, ellipse and book plate structure, simple and reliable for structure, directly with cylindrical shell welding practicality height.
Description of drawings
Fig. 1 is the structural representation of the utility model flexible tubesheet.
Fig. 2 is the A portion enlarged drawing of Fig. 1.
Fig. 3 is the structural representation that the flexible tubesheet of the utility model is connected with pipe and cylindrical shell.
Label declaration in the accompanying drawing
The 1-cylindrical shell
The thick straight section of 2-flexible tubesheet 21-
The transition of 22-changeover portion 221-tube sheet outer arc transition 222-tube sheet inner arc
23-Boping tube sheet
The 3-pipe.
The specific embodiment
Further describe below in conjunction with the flexible tubesheet structure of accompanying drawing the utility model.
See also the structural representation of Fig. 1 for the utility model flexible tubesheet; Fig. 2 be Fig. 1 A portion enlarged drawing and Fig. 3 for the flexible tubesheet of the utility model with shown in the structural representation that pipe and cylindrical shell are connected; A kind of flexible tubesheet structure of multitubular boiler, multitubular boiler are used for acid production with sulphur waste heat recovery, sulfur recovery, spent acid recovery, are the multitubular boiler below the design pressure 7.3MPa; Be densely covered with most pores on the flexible tubesheet 2 of multitubular boiler; Pipe 3 pass flexible tubesheet pore and with its welding, described flexible tubesheet 2 is made up of thick straight section 21, changeover portion 22 and Boping tube sheet 23 (generally getting t=30mm), is shaped through machining by same block plate.
Wherein, the flat tube sheet 23 of the thinner thickness of described thick straight section 21 is thick, and changeover portion 22 is a circular arc; One of which end and thick straight section 21 uniform thickness; Thickness is gradually by thick attenuation, and the other end and Boping tube sheet 23 uniform thickness form transition 221 of tube sheet outer arc and tube sheet inner arc transition 222.
Tube sheet outer arc transition 221 makes thicker straight flange of tube sheet and thin dull and stereotyped lateral wall arc transition, and the radius of curvature of circular arc confirms that according to FEM calculation circular arc is shaped through machining.
Tube sheet inner arc transition 222 makes thicker straight flange of tube sheet and thin dull and stereotyped madial wall arc transition, and the radius of curvature of circular arc confirms that according to FEM calculation circular arc is shaped through machining.
Tube sheet length of straight flange L1, it is long to keep flexible tubesheet to dock required thick straight section with cylindrical shell, and the existing strength character of bearing elevated pressures of tube sheet and cylindrical shell welding back transition region has again and satisfies the required tube sheet elasticity requirement of smoke pipe thermal stretching.
Tube sheet total height L2, the i.e. whole lateral length of flexible tubesheet.
The cylindrical shell 1 of multitubular boiler all passes the Boping tube sheet 23 of flexible tubesheet 2 and welding with it with the thick straight section of flexible tubesheet 2 21 welding, the two ends of pipe 3.
Claims (3)
1. the flexible tubesheet structure of a multitubular boiler; Multitubular boiler is used for acid production with sulphur waste heat recovery, sulfur recovery, spent acid and reclaims, and is densely covered with most pores on the flexible tubesheet of multitubular boiler (2), pipe (3) pass flexible tubesheet pore and with its welding; It is characterized in that: described flexible tubesheet (2) is made up of thick straight section (21), changeover portion (22) and Boping tube sheet (23); Wherein, the flat tube sheet (23) of the thinner thickness of described thick straight section (21) is thick, and changeover portion (22) is a circular arc; One of which end and thick straight section (21) uniform thickness; Thickness is gradually by thick attenuation, and the other end and Boping tube sheet (23) uniform thickness form tube sheet outer arc transition (221) and tube sheet inner arc transition (222); The cylindrical shell of multitubular boiler (1) welds with the thick straight section (21) of flexible tubesheet (2), and the Boping tube sheet (23) of flexible tubesheet (2) and welding are with it all passed in the two ends of pipe (3).
2. the flexible tubesheet structure of multitubular boiler according to claim 1 is characterized in that: described multitubular boiler is the multitubular boiler below the design pressure 7.3MPa.
3. the flexible tubesheet structure of multitubular boiler according to claim 1, it is characterized in that: described flexible tubesheet (2) is shaped through machining by same block plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120298437XU CN202195595U (en) | 2011-08-17 | 2011-08-17 | Flexible pipe plate structure for fire tube boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120298437XU CN202195595U (en) | 2011-08-17 | 2011-08-17 | Flexible pipe plate structure for fire tube boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202195595U true CN202195595U (en) | 2012-04-18 |
Family
ID=45950500
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120298437XU Expired - Fee Related CN202195595U (en) | 2011-08-17 | 2011-08-17 | Flexible pipe plate structure for fire tube boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202195595U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102353142A (en) * | 2011-08-17 | 2012-02-15 | 中江能源回收(上海)有限公司 | Flexible tube plate structure for fire-tube boiler |
| CN106705008A (en) * | 2016-11-16 | 2017-05-24 | 青岛德固特节能装备股份有限公司 | Bundling double-sleeve shock-cooling type waste heat boiler structure |
| CN110056848A (en) * | 2018-04-23 | 2019-07-26 | 新能能源有限公司 | High temperature and high pressure flue gas afterheat utilizing system |
-
2011
- 2011-08-17 CN CN201120298437XU patent/CN202195595U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102353142A (en) * | 2011-08-17 | 2012-02-15 | 中江能源回收(上海)有限公司 | Flexible tube plate structure for fire-tube boiler |
| CN106705008A (en) * | 2016-11-16 | 2017-05-24 | 青岛德固特节能装备股份有限公司 | Bundling double-sleeve shock-cooling type waste heat boiler structure |
| CN110056848A (en) * | 2018-04-23 | 2019-07-26 | 新能能源有限公司 | High temperature and high pressure flue gas afterheat utilizing system |
| CN110056848B (en) * | 2018-04-23 | 2024-05-03 | 新能能源有限公司 | High-temperature high-pressure flue gas waste heat utilization system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120418 Termination date: 20160817 |