CN202195595U - Flexible pipe plate structure for fire tube boiler - Google Patents
Flexible pipe plate structure for fire tube boiler Download PDFInfo
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- 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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- tube sheet
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- 230000007704 transition Effects 0.000 claims abstract description 21
- 238000011084 recovery Methods 0.000 claims abstract description 18
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000002253 acid Substances 0.000 claims abstract description 9
- 229910052717 sulfur Inorganic materials 0.000 claims abstract description 8
- 239000011593 sulfur Substances 0.000 claims abstract description 8
- 238000004519 manufacturing process Methods 0.000 claims abstract description 7
- 239000002918 waste heat Substances 0.000 claims abstract description 6
- 238000003466 welding Methods 0.000 claims abstract description 4
- 238000003754 machining Methods 0.000 claims description 5
- 239000011148 porous material Substances 0.000 claims 2
- 239000005864 Sulphur Substances 0.000 claims 1
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 abstract description 14
- 239000002699 waste material Substances 0.000 abstract description 5
- 239000000779 smoke Substances 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 2
- 210000001503 joint Anatomy 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000035882 stress Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
Images
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
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- Rigid Pipes And Flexible Pipes (AREA)
Abstract
本实用新型涉及火管锅炉的挠性管板结构，用于硫磺制酸余热回收、硫回收、废酸回收，所述的挠性管板由厚直段、过渡段和薄平管板构成，其中，所述的厚直段的厚度较薄平管板厚，过渡段为圆弧形，其一端与厚直段等厚，厚度逐渐由厚变薄，另一端与薄平管板等厚，形成管板外侧圆弧过渡和管板内侧圆弧过渡，火管锅炉的筒体与挠性管板的厚直段焊接，管子的两端均穿过挠性管板的薄平管板并与之焊接。优点是：厚度可以减簿，使管板的表面温度低，两侧温差应力小，较薄的管板形状为曲线形，具有一定的弹性，可以吸收烟管受热时的热伸长量，锅炉壳体不需要设膨胀节，特别适用于高温、高压下的硫磺制酸火管锅炉。
The utility model relates to a flexible tube plate structure of a fire tube boiler, which is used for waste heat recovery, sulfur recovery and waste acid recovery of sulfuric acid production. The flexible tube plate is composed of a thick straight section, a transition section and a thin flat tube plate. Wherein, the thickness of the thick straight section is thicker than the thin flat tube plate, the transition section is arc-shaped, one end is equal to the thickness of the thick straight section, the thickness gradually becomes thinner, and the other end is equal to the thin flat tube plate, The outer circular arc transition of the tube sheet and the inner circular arc transition of the tube sheet are formed. The shell of the fire tube boiler is welded to the thick straight section of the flexible tube sheet. Both ends of the tube pass through the thin flat tube sheet of the flexible tube sheet and are connected to The welding. The advantages are: the thickness can be reduced, so that the surface temperature of the tube sheet is low, the temperature difference stress on both sides is small, the shape of the thinner tube sheet is curved, has a certain degree of elasticity, and can absorb the thermal elongation of the smoke tube when it is heated. The shell does not need expansion joints, which is especially suitable for sulfur acid fire tube boilers under high temperature and high pressure.
Description
技术领域 technical field
本实用新型涉及硫磺制酸余热回收、硫回收、废酸回收所用的火管锅炉，尤其是其中包含的火管锅炉的挠性管板结构。 The utility model relates to a fire tube boiler used for recovery of residual heat from sulfuric acid production, recovery of sulfur and recovery of waste acid, in particular to a flexible tube plate structure of the fire tube boiler contained therein.
背景技术 Background technique
在硫磺制酸、硫回收、废酸回收装置的余热回收系统中，以管壳式火管锅炉用得最多，管板是它的主要零部件之一。由于管板的工作条件十分苛刻，既要承受高压，又要经受高温介质的冲蚀。高压与高温对管板厚度的要求值是矛盾的，高压要求管板厚些，而高温要求管板越簿越好，越簿温差热应力越小。因此，有必要设计一种火管锅炉挠性管板结构既能耐高压又能抗高温介质的冲蚀。 In the waste heat recovery system of sulfur acid production, sulfur recovery, and waste acid recovery units, the shell-and-tube fire-tube boiler is used most, and the tube plate is one of its main components. Due to the very harsh working conditions of the tube sheet, it must bear high pressure and be eroded by high temperature medium. High pressure and high temperature have contradictory requirements for tube sheet thickness. High pressure requires a thicker tube sheet, while high temperature requires that the tube sheet be thinner, the better, and the thinner the temperature difference, the smaller the thermal stress. Therefore, it is necessary to design a flexible tubesheet structure of a fire tube boiler that can withstand both high pressure and high temperature medium erosion.
发明内容 Contents of the invention
本实用新型所要解决的技术问题在于提供一种火管锅炉的挠性管板结构，特别适用于高温、高压下的硫磺制酸火管锅炉。 The technical problem to be solved by the utility model is to provide a flexible tube plate structure of a fire-tube boiler, which is especially suitable for fire-tube boilers for sulfuric acid production under high temperature and high pressure.
本实用新型解决上述技术问题所采取的技术方案是：一种火管锅炉的挠性管板结构，火管锅炉用于硫磺制酸余热回收、硫回收、废酸回收，火管锅炉的挠性管板上密布有多数个管孔，管子穿过挠性管板的管孔并与其焊接，所述的挠性管板由厚直段、过渡段和薄平管板构成，其中，所述的厚直段的厚度较薄平管板厚，过渡段为圆弧形，其一端与厚直段等厚，厚度逐渐由厚变薄，另一端与薄平管板等厚，形成管板外侧圆弧过渡和管板内侧圆弧过渡，火管锅炉的筒体与挠性管板的厚直段焊接，管子的两端均穿过挠性管板的薄平管板并与之焊接。 The technical scheme adopted by the utility model to solve the above technical problems is: a flexible tube plate structure of a fire tube boiler, the fire tube boiler is used for waste heat recovery, sulfur recovery and waste acid recovery of sulfuric acid production, the flexible The tube plate is densely covered with a plurality of tube holes, and the tubes pass through the tube holes of the flexible tube plate and are welded to it. The flexible tube plate is composed of a thick straight section, a transition section and a thin flat tube plate, wherein the The thickness of the thick straight section is thicker than that of the thin flat tube sheet, and the transition section is arc-shaped. One end of the thick straight section has the same thickness as the thick straight section, and the thickness gradually changes from thick to thin. Arc transition and circular arc transition inside the tube sheet, the cylinder of the fire tube boiler is welded to the thick straight section of the flexible tube sheet, and both ends of the tube pass through the thin flat tube sheet of the flexible tube sheet and are welded to it.
此挠性管板结构具有耐压强度高、管板表面温差应力小、管板具有一定的弹性，可以吸收烟管受热时的热伸长量的特性。 The flexible tube sheet structure has the characteristics of high compressive strength, small temperature difference stress on the surface of the tube sheet, and certain elasticity of the tube sheet, which can absorb the thermal elongation of the smoke tube when it is heated.
在上述方案的基础上，所述的火管锅炉为设计压力7.3MPa以下火管锅炉，为大型硫磺制酸装置的余热回收配套高参数火管锅炉提供了设计基础。 On the basis of the above scheme, the fire-tube boiler described above is a fire-tube boiler with a design pressure below 7.3MPa, which provides a design basis for a high-parameter fire-tube boiler for waste heat recovery of a large-scale sulfuric acid plant.
在上述方案的基础上，所述的挠性管板由同一块钢板经机械加工成形。 On the basis of the above solution, the flexible tube plate is formed by machining from the same steel plate.
本实用新型的有益效果是： The beneficial effects of the utility model are:
1、与普通的平管板相比，厚度可以减簿，使得管板的表面温度低，两侧温差应力小，同时由于管板较薄，形状又为曲线形，具有一定的弹性，可以吸收烟管受热时的热伸长量，锅炉壳体不需要设膨胀节，特别适用于高温、高压下的硫磺制酸火管锅炉； 1. Compared with the ordinary flat tube sheet, the thickness can be reduced, so that the surface temperature of the tube sheet is low, and the temperature difference stress on both sides is small. At the same time, because the tube sheet is thin and the shape is curved, it has certain elasticity and can absorb The thermal elongation of the smoke tube when heated, the boiler shell does not need to be equipped with expansion joints, especially suitable for sulfuric acid fire tube boilers under high temperature and high pressure;
2、与现有的蝶形、椭圆形和簿板结构的挠性管板比，结构简单可靠、直接与筒体焊接实用性高。 2. Compared with the existing butterfly-shaped, oval-shaped and thin-plate flexible tube sheets, the structure is simple and reliable, and the direct welding with the cylinder body is highly practical.
附图说明 Description of drawings
图1为本实用新型挠性管板的结构示意图。 Fig. 1 is a structural schematic diagram of the flexible tube sheet of the present invention.
图2为图1的A部放大图。 Fig. 2 is an enlarged view of part A of Fig. 1 .
图3为本实用新型的挠性管板与管子及筒体连接的结构示意图。 Fig. 3 is a structural schematic diagram of the connection between the flexible tube sheet of the present invention and the tube and cylinder.
附图中标号说明 Explanation of the numbers in the drawings
1－筒体 1 - Cylinder
2－挠性管板 21－厚直段 2 - flexible tube sheet 21 - thick straight section
22－过渡段 221－管板外侧圆弧过渡 222－管板内侧圆弧过渡 22 - Transition section 221 - Arc transition on the outer side of the tube sheet 222 - Arc transition on the inner side of the tube sheet
23－薄平管板 23 - thin flat tube sheet
3－管子。 3 - Tube.
具体实施方式 Detailed ways
以下结合附图对本实用新型的挠性管板结构作进一步描述。 The flexible tube sheet structure of the present invention will be further described below in conjunction with the accompanying drawings.
请参阅图1为本实用新型挠性管板的结构示意图，图2为图1的A部放大图和图3为本实用新型的挠性管板与管子及筒体连接的结构示意图所示，一种火管锅炉的挠性管板结构，火管锅炉用于硫磺制酸余热回收、硫回收、废酸回收，为设计压力7.3MPa以下的火管锅炉，火管锅炉的挠性管板2上密布有多数个管孔，管子3穿过挠性管板的管孔并与其焊接，所述的挠性管板2由厚直段21、过渡段22和薄平管板23（一般取t=30mm）构成，由同一块钢板经机械加工成形。
Please refer to Fig. 1 which is a structural schematic diagram of the flexible tube sheet of the present invention, Fig. 2 is an enlarged view of part A of Fig. 1 and Fig. 3 is a structural schematic diagram showing the connection between the flexible tube sheet of the present utility model and the pipe and cylinder, A flexible tube plate structure of a fire tube boiler. The fire tube boiler is used for recovery of waste heat from sulfuric acid production, sulfur recovery, and waste acid recovery. It is a fire tube boiler with a design pressure below 7.3MPa. The flexible tube plate of the fire tube boiler 2 There are many tube holes densely covered on it, and the tubes 3 pass through the tube holes of the flexible tube sheet and are welded to it. The flexible tube sheet 2 consists of a thick
其中，所述的厚直段21的厚度较薄平管板23厚，过渡段22为圆弧形，其一端与厚直段21等厚，厚度逐渐由厚变薄，另一端与薄平管板23等厚，形成管板外侧圆弧过渡221和管板内侧圆弧过渡222。
Wherein, the thickness of described thick
管板外侧圆弧过渡221，使管板较厚的直边与较薄的平板外侧壁圆弧过渡，圆弧的曲率半径根据有限元计算确定，圆弧通过机械加工成形。 The outer circular arc transition 221 of the tube sheet makes the thicker straight edge of the tube sheet and the thinner flat outer wall arc transition, the radius of curvature of the arc is determined according to finite element calculation, and the arc is formed by machining.
管板内侧圆弧过渡222，使管板较厚的直边与较薄的平板内侧壁圆弧过渡，圆弧的曲率半径根据有限元计算确定，圆弧通过机械加工成形。
The inner
管板直边长度L1，可保持挠性管板与筒体对接所需的厚直段长，管板与筒体焊接后过渡区既有承受较高压力的强度性能又有满足烟管热伸长所需的管板弹性要求。 The length of the straight side of the tube sheet is L1, which can maintain the thick straight section length required for the butt joint between the flexible tube sheet and the cylinder. The required tubesheet elasticity requirements.
管板总高度L2，即挠性管板整体侧向长度。 The total height L2 of the tube sheet is the overall lateral length of the flexible tube sheet.
火管锅炉的筒体1与挠性管板2的厚直段21焊接，管子3的两端均穿过挠性管板2的薄平管板23并与之焊接。
The
Claims (3)
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 |
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| Publication Number | Publication Date |
|---|---|
| CN202195595U true CN202195595U (en) | 2012-04-18 |
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| 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 |
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| 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 |