CN201897429U - Structure for preventing heat exchanging tube from deforming due to heating - Google Patents
Structure for preventing heat exchanging tube from deforming due to heating Download PDFInfo
- Publication number
- CN201897429U CN201897429U CN2010205754322U CN201020575432U CN201897429U CN 201897429 U CN201897429 U CN 201897429U CN 2010205754322 U CN2010205754322 U CN 2010205754322U CN 201020575432 U CN201020575432 U CN 201020575432U CN 201897429 U CN201897429 U CN 201897429U
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- Prior art keywords
- tube
- heat exchange
- welded
- heat
- exchange tube
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- 238000010438 heat treatment Methods 0.000 title 1
- 238000007789 sealing Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- 239000003546 flue gas Substances 0.000 description 2
- 238000005272 metallurgy Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
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- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
一种预防换热管受热膨胀变形的结构，其主要是：换热管一端外部套有一段波纹管，该波纹管的另一端焊接在一个管板对应的通孔上，上述换热管的另一端焊接在另一管板对应的通孔上。本实用新型结构简单、加工难度小、成本低；传热效率高，可以长周期运行，使用寿命长；密封性能好，特别适用于有严格泄露要求的预热器。
A structure for preventing thermal expansion and deformation of heat exchange tubes, mainly as follows: one end of the heat exchange tube is covered with a section of bellows, the other end of the bellows is welded to a through hole corresponding to a tube plate, and the other end of the heat exchange tube is One end is welded to the corresponding through hole of the other tube sheet. The utility model has the advantages of simple structure, low processing difficulty and low cost; high heat transfer efficiency, long-period operation and long service life; good sealing performance, and is especially suitable for preheaters with strict leakage requirements.
Description
技术领域 本实用新型涉及一种预热器，特别是列管式预热器。Technical field The utility model relates to a preheater, especially a tubular preheater.
背景技术 目前，预热器广泛应用于石油、化工、冶金、电力等行业中。常用的预热器有列管式预热器和热管式预热器，其中列管式预热器的结构一般是：它有一个箱体，箱体内设有与两端有一定间距的周边固定于其上的两个竖直管板，该两竖直管板对应的通孔内设有换热管，其一端与一个管板焊接相连，另一端与另一管板用填料函活动连接，即在换热管与管板间加填料用弹簧加螺栓、螺母压紧。它的不足之处是：不仅结构复杂，加工繁琐、投资成本高，而且容易发生泄漏，使冷热介质混淆，同时又影响传热性能。Background Art At present, preheaters are widely used in industries such as petroleum, chemical industry, metallurgy, and electric power. Commonly used preheaters include shell-and-tube preheaters and heat-pipe preheaters. The structure of the shell-and-tube preheaters is generally: it has a box, and the box is provided with a peripheral wall with a certain distance from both ends. Two vertical tube sheets fixed on it, heat exchange tubes are arranged in the corresponding through holes of the two vertical tube sheets, one end of which is welded to one tube sheet, and the other end is movably connected to the other tube sheet with a stuffing box , that is to add packing between the heat exchange tube and the tube sheet and press it with springs and bolts and nuts. Its shortcomings are: not only complex structure, cumbersome processing, high investment cost, but also prone to leakage, which confuses hot and cold media and affects heat transfer performance.
发明内容 本实用新型的目的在于提供一种结构简单、容易加工、成本低、密封性能好的一种预防换热管受热膨胀变形的结构。SUMMARY OF THE INVENTION The purpose of this utility model is to provide a structure that prevents thermal expansion and deformation of heat exchange tubes with simple structure, easy processing, low cost and good sealing performance.
本实用新型主要是将换热管与管板之间的活连接改为由波纹管过度的固定连接。列管式预热器有一个箱体，箱体内设有与两端有一定间距的周边固定于其上的两个竖直管板，该两竖直管板对应的通孔内设有换热管。该换热管一端外部套有一段波纹管，最好其与换热管之间为过盈配合。该波纹管的另一端焊接在一个管板对应的通孔上。上述换热管的另一端焊接在另一管板对应的通孔上，其可以是直接焊接在通孔上，也可以通过连接件间接焊接在通孔上。上述两管板与箱体固定连接为固定管板。The utility model mainly changes the flexible connection between the heat exchange tube and the tube plate into an excessively fixed connection by a corrugated tube. The tube-and-tube preheater has a box body, which is provided with two vertical tube plates fixed on the periphery with a certain distance from both ends. The through holes corresponding to the two vertical tube plates are provided with replacement Heat pipe. One end of the heat exchange tube is sheathed with a section of corrugated tube, which preferably has an interference fit with the heat exchange tube. The other end of the bellows is welded on a corresponding through hole of a tube plate. The other end of the heat exchange tube is welded to the corresponding through hole of the other tube sheet, which can be directly welded to the through hole, or indirectly welded to the through hole through a connecting piece. The above two tube sheets are fixedly connected with the box body as a fixed tube sheet.
当冷介质从换热管中通过，高温烟气从换热管外经过时两者便进行热量交换，在该热量交换的同时换热管受热产生膨胀，使其向带有波纹管的一端伸长变形，整个变形量在波纹管内发生。由于换热管与波纹管之间为过盈配合，波纹管与箱体管板固定连接，因此烟气不会泄露到冷介质中。When the cold medium passes through the heat exchange tube and the high-temperature flue gas passes outside the heat exchange tube, the two exchange heat. At the same time of the heat exchange, the heat exchange tube is heated and expands, making it extend to the end with the bellows. Long deformation, the entire amount of deformation occurs in the bellows. Due to the interference fit between the heat exchange tube and the corrugated tube, the corrugated tube is fixedly connected with the box tube plate, so the flue gas will not leak into the cold medium.
本实用新型与现有技术相比具有如下优点：Compared with the prior art, the utility model has the following advantages:
1、结构简单、加工难度小、成本低。1. The structure is simple, the processing difficulty is small, and the cost is low.
2、传热效率高，可以长周期运行，使用寿命长。2. High heat transfer efficiency, long cycle operation and long service life.
3、密封性能好，特别适用于有严格泄露要求的预热器。3. Good sealing performance, especially suitable for preheaters with strict leakage requirements.
附图说明Description of drawings
图1是本实用新型使用状态局剖示意简图。Fig. 1 is a schematic diagram of a partial section of the utility model in use.
图2是图1中I的放大示意图。Fig. 2 is an enlarged schematic diagram of I in Fig. 1 .
图3是图1中II的放大示意图。Fig. 3 is an enlarged schematic view of II in Fig. 1 .
具体实施方式 在图1所示的一种预防换热管受热膨胀变形的结构的使用状态局剖示意简图中，列管式预热器有一个箱体1，箱体内设有与两端有一定间距的两个竖直管板2，上述两个管板与箱体固定连接均为固定管板。换热管3一端外部套有一段波纹管4，其与换热管之间为过盈配合。该波纹管的另一端焊接在一个管板对应的通孔上，如图2所示。上述换热管的另一端通过环形连接件5间接焊接在另一管板对应的通孔上，如图3所示。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the partial schematic diagram of the use state of a structure that prevents the heat exchange tube from being heated and expanded and deformed as shown in Figure 1, the tube-and-tube preheater has a
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205754322U CN201897429U (en) | 2010-10-25 | 2010-10-25 | Structure for preventing heat exchanging tube from deforming due to heating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205754322U CN201897429U (en) | 2010-10-25 | 2010-10-25 | Structure for preventing heat exchanging tube from deforming due to heating |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201897429U true CN201897429U (en) | 2011-07-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205754322U Expired - Fee Related CN201897429U (en) | 2010-10-25 | 2010-10-25 | Structure for preventing heat exchanging tube from deforming due to heating |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201897429U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102607322A (en) * | 2012-03-31 | 2012-07-25 | 邓浩 | Elastic connecting component for heat exchanger |
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2010
- 2010-10-25 CN CN2010205754322U patent/CN201897429U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102607322A (en) * | 2012-03-31 | 2012-07-25 | 邓浩 | Elastic connecting component for heat exchanger |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110713 Termination date: 20131025 |