CN207610596U - A kind of attachment device of vertical heat exchanger upper perforated plate and heat exchanger tube - Google Patents
A kind of attachment device of vertical heat exchanger upper perforated plate and heat exchanger tube Download PDFInfo
- Publication number
- CN207610596U CN207610596U CN201721690785.5U CN201721690785U CN207610596U CN 207610596 U CN207610596 U CN 207610596U CN 201721690785 U CN201721690785 U CN 201721690785U CN 207610596 U CN207610596 U CN 207610596U
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- CN
- China
- Prior art keywords
- heat exchanger
- exchanger tube
- tube
- tube sheet
- perforated plate
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
A kind of attachment device of vertical heat exchanger upper perforated plate and heat exchanger tube is related to a kind of heat exchanger apparatus, a kind of attachment device of vertical heat exchanger upper perforated plate and heat exchanger tube, which is characterized in that described device includes tube sheet and heat exchanger tube, heat exchanger tube（1）With tube sheet（2）It welds, then heat exchanger tube（1）Again with tube sheet（2）Carry out fluting expanded joint；Two ring-shaped grooves are opened in tubesheet holes；Heat exchanger tube 1 is inserted into tube sheet（2）Kong Zhong.The circle of pipe end one and tube sheet junction are fillet weld seam on heat exchanger tube.The device is using heat exchanger tube upper end and tubesheet holes strength solder joints and the strength and buckling of two annular grooves is opened up on tubesheet holes and with structure, its bonding strength is high, it is strong that anti-axial direction pulls ability, heat exchange pipe external surface is bonded tightly with tubesheet holes, it is larger to be particularly suitable for the cold and hot medium temperature difference, generates larger axial temperature difference stress situation.
Description
Technical field
The utility model is related to a kind of heat exchanger apparatus, more particularly to a kind of vertical heat exchanger upper perforated plate and heat exchanger tube
Attachment device.
Background technology
Heat exchanger is widely used in the industries such as chemical industry, petrochemical industry, oil refining, pharmacy, light industry, food and the energy, mainly
It is the key equipment of process industrial for realizing that the heat exchange of cold and hot medium, quantity account for the 60-70% of total equipment.However
In actual production, heat exchanger failure is commonplace, and one of principal mode is exactly that heat exchanger tube and tube sheet are not assisted in axial deformation
Tune pulls so as to cause heat exchanger tube from tubesheet holes, therefore the connection structure of exchanger tubes and tubesheets is the most key.
There are four types of the connection structures of common tube sheet and heat exchanger tube：Welding, expanded joint, welded and rolled tube joint and use and explosive expansion joint molding etc.
Four kinds of methods.The characteristics of cannot accumulating tube side liquid in parking based on vertical heat exchanger upper perforated plate, frequently with heat exchanger tube upper end
It contracts in portion（It is recessed）Into 3 ~ 5 mm welding structures of tubesheet holes, but this pattern can only use a circle fillet welding seam weld due to structure
It connects, welding is difficult, and welding quality is not easy to ensure, tension takes off poor performance, vulnerable when by large axial force.
Invention content
The purpose of this utility model is to provide a kind of attachment device of vertical heat exchanger upper perforated plate and heat exchanger tube, the devices
The strength and buckling of two annular grooves is opened up using heat exchanger tube upper end and tubesheet holes strength solder joints and on tubesheet holes and with structure,
Bonding strength is high, and anti-axial direction pulls that ability is strong, and heat exchange pipe external surface is bonded tightly with tubesheet holes, is particularly suitable for cold and hot medium temperature
Difference is larger, generates larger axial temperature difference stress situation.
The purpose of this utility model is achieved through the following technical solutions：
A kind of attachment device of vertical heat exchanger upper perforated plate and heat exchanger tube, described device include tube sheet and heat exchanger tube, heat exchange
Tube to tube sheet welding, then heat exchanger tube carry out fluting expanded joint with tube sheet again；Two ring-shaped grooves are opened in tubesheet holes；Heat exchanger tube 1 is inserted
Enter in tubesheet holes.
The attachment device of a kind of the vertical heat exchanger upper perforated plate and heat exchanger tube, the circle of pipe end one and pipe on the heat exchanger tube
Plate junction is fillet weld seam.
The advantages of the utility model is with effect：
1. the utility model is using heat exchanger tube upper end and tubesheet holes strength solder joints and opens up two annular grooves on tubesheet holes
Strength and buckling and with structure, bonding strengths are high, and it is strong that anti-axial direction pulls ability.It is larger to be particularly suitable for the cold and hot medium temperature difference, produces
Raw larger axial temperature difference stress situation.
2. the utility model is fitted closely with tubesheet holes due to expanded joint, heat exchange pipe outer wall, is avoided shell side medium and enter ring
Gap can prevent from generating crevice corrosion between heat exchange pipe outer wall and tubesheet holes annular space.
3. this expanded and welded tube joint of the utility model and with making heat exchange pipe external surface be bonded tightly with tubesheet holes, can prevent shell Cheng Jie
Matter is mutually mixed, especially inflammable, explosive, toxic, the volatile and danger mediums such as be corrosive.
4. the utility model can improve the anti-fatigue performance of junction, stress corrosion caused by the welding stress of part is eliminated,
Improve service life.5. heat exchanger tube is carbon steel, tube sheet is carbon steel or low-alloy steel, and design pressure is no more than 4.0MPa, if
Temperature is counted at 350 DEG C or less.
Description of the drawings
Fig. 1 is the utility model exchanger tubes and tubesheets attachment structure schematic diagram.
Specific implementation mode
The utility model is described in detail in illustrated embodiment below in conjunction with the accompanying drawings.
Connection relation between tube sheet and heat exchanger tube all parts is as shown, its device includes 1 elder generation of heat exchanger tube and tube sheet 2
Welding, then heat exchanger tube 1 carries out fluting expanded joint with tube sheet 2 again.
According to 1 specification of part heat exchanger tube（19 × 2mm of Φ 25 × 2.5mm, Φ is common）The trepanning on tube sheet 2To improve the anti-pull-off strength of heat exchanger tube, two are opened in tubesheet holes at a distance of 6mm annulars
Groove（Long 4mm, deep 4mm）.
Heat exchanger tube 1 is inserted into 2 hole of tube sheet.Lubricating oil is remained when to prevent expanded joint, and stomata or other welderings are caused in weld seam
Defect is connect, pipe end one on heat exchanger tube is first welded and encloses fillet weld.Utilize tube expander or other method expanded joints.Due on heat exchanger tube when expanded joint
End generates plastic deformation, and deformation cannot restore；And flexible deformation is generated around tubesheet holes, deformation can restore, after such expanded joint
Tubesheet holes is closely adhered to the outer surface of heat exchanger tube, and heat exchanger tube is made to have certain anti-pull-off strength.In addition tubesheet holes opens up again
Two annular grooves, when heat exchanger tube is plastically deformed, a part of tube wall enters in annular groove, and which again increases part tensions to take off ability.
The weld cracking of elder generation's welding when to avoid expanded joint heat exchanger tube, expanded joint position should be far from welded seam areas, generally away from heat exchanger tube upper end 10-
Without expanded joint in the range of 15mm.
Claims (2)
1. a kind of attachment device of vertical heat exchanger upper perforated plate and heat exchanger tube, which is characterized in that described device includes tube sheet and change
Heat pipe, heat exchanger tube（1）With tube sheet（2）It welds, then heat exchanger tube（1）Again with tube sheet（2）Carry out fluting expanded joint；Two are opened in tubesheet holes
A ring-shaped groove；Heat exchanger tube（1）It is inserted into tube sheet（2）Kong Zhong.
2. the attachment device of a kind of vertical heat exchanger upper perforated plate and heat exchanger tube according to claim 1, which is characterized in that institute
It is fillet weld seam to state the circle of pipe end one and tube sheet junction on heat exchanger tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721690785.5U CN207610596U (en) | 2017-12-07 | 2017-12-07 | A kind of attachment device of vertical heat exchanger upper perforated plate and heat exchanger tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721690785.5U CN207610596U (en) | 2017-12-07 | 2017-12-07 | A kind of attachment device of vertical heat exchanger upper perforated plate and heat exchanger tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207610596U true CN207610596U (en) | 2018-07-13 |
Family
ID=62797303
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721690785.5U Expired - Fee Related CN207610596U (en) | 2017-12-07 | 2017-12-07 | A kind of attachment device of vertical heat exchanger upper perforated plate and heat exchanger tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207610596U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109500507A (en) * | 2018-11-07 | 2019-03-22 | 江山顺泰化工机械工程有限公司 | A kind of connection method of heat exchanger tube sheet and heat exchanger tube |
-
2017
- 2017-12-07 CN CN201721690785.5U patent/CN207610596U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109500507A (en) * | 2018-11-07 | 2019-03-22 | 江山顺泰化工机械工程有限公司 | A kind of connection method of heat exchanger tube sheet and heat exchanger tube |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180713 Termination date: 20181207 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |