CN207414706U - A kind of novel heat exchange pipe welding structure - Google Patents
A kind of novel heat exchange pipe welding structure Download PDFInfo
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- CN207414706U CN207414706U CN201721301924.0U CN201721301924U CN207414706U CN 207414706 U CN207414706 U CN 207414706U CN 201721301924 U CN201721301924 U CN 201721301924U CN 207414706 U CN207414706 U CN 207414706U
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- heat exchange
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- hollow cone
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Abstract
The utility model discloses a kind of novel heat exchange pipe welding structures, and including heat exchanger tube, tube sheet and semi-hollow cone blocking, Tube-sheet Welding is in heat exchange pipe outer wall, and tube sheet and tube end weld to form angle welding；Semi-hollow cone blocking is welded between adjacent two heat exchanger tubes, and semi-hollow cone blocking forms angle welding with tube end, and high-temperature-resistant layer is also set up on semi-hollow cone blocking outer wall.The utility model is simple in structure, and soldering reliability is high, can reduce the welding stress of welding process generation, avoids that welding cone blocking is concentrated weld stress crackle occur, prevents occurring new interior leak source during leakage in elimination.
Description
Technical field：
The utility model is related to heat exchanger tube welding technology fields, are specially a kind of novel heat exchange pipe welding structure.
Background technology：
Heat exchanger tube is one of element of heat exchanger, is placed within cylinder, for the exchange of heat between two media；Except light pipe
Outside, various augmentation of heat transfer pipes, such as finned tube, screwed pipe, spiral grooved tube also can be used in heat exchanger.When pipe interior diameter two
When side heat transfer coefficient difference is larger, the fin of finned tube should be arranged in the low one side of heat transfer coefficient.Appearance is welded near heat exchanger tube
Easily there is stress concentration, welding stress can not discharge, and weld crack occur.
Utility model content：
The purpose of this utility model is to provide a kind of novel heat exchange pipe welding structure, to solve to carry in above-mentioned background technology
The problem of going out.
To achieve the above object, the utility model is implemented by following technical solution：A kind of novel heat exchange pipe welding structure, bag
Heat exchanger tube, tube sheet and semi-hollow cone blocking are included, the Tube-sheet Welding is welded on phase in the heat exchange pipe outer wall, the semi-hollow cone blocking
Between adjacent two heat exchanger tubes, high-temperature-resistant layer is also set up on the semi-hollow cone blocking outer wall；The high-temperature-resistant layer includes solid
Composition, insulating coating and liquid adhesive layer, the liquid adhesive layer are coated in the lower section of the solid composite, the insulation
For fat coating coated in above the solid composite, it is dilute that the solid composite includes graphite fibre layer, carbon fiber layer and fire resisting
Soil layer, the graphite fibre layer, carbon fiber layer and fire resisting rare earth layer close-packed arrays successively.
Further, the semi-hollow cone blocking two bottom sides form positioning table, and the width of the positioning table changes to be described
Heat pipe internal diameter+0.3mm-0.5mm.
Further, the length of the semi-hollow cone blocking is more than or equal to 1.3 times of heat exchange+4 times of bore heat exchange
Thickness of pipe wall.
Further, the high-temperature-resistant layer thickness is 2mm-5mm.
Further, the tube sheet and the tube end weld to form angle welding；The semi-hollow cone blocking with it is described
Tube end forms angle welding.
The advantages of the utility model：1st, the utility model is simple in structure, and soldering reliability is high, can reduce welding process production
Raw welding stress avoids that welding cone blocking is concentrated weld stress crackle occur, prevents occurring in elimination during leakage in new
Leak source；2nd, the high-temperature-resistant layer used has the advantages that insulation, fire-retardant, resistance to compression, distortion-free, is suitable for making under rugged environment
With service life is long；Wherein, the fire resisting rare earth layer of setting has the advantages that heat-insulating, fire-preventing；Improve its fire resistance.
Description of the drawings：
Fig. 1 is the overall structure diagram of the utility model.
Fig. 2 is the utility model high-temperature-resistant layer sectional view.
The mark of each component is as follows in attached drawing：Heat exchanger tube 1, tube sheet 2, semi-hollow cone blocking 3, solid composite 4, insulating coating
5th, liquid adhesive layer 6, graphite fibre layer 7, carbon fiber layer 8, fire resisting rare earth layer 9, positioning table 10.
Specific embodiment：
Below in conjunction with attached drawing, by embodiment, the utility model is described in further detail.
As depicted in figs. 1 and 2, a kind of novel heat exchange pipe welding structure, including heat exchanger tube 1, tube sheet 2 and semi-hollow cone blocking 3,
Tube sheet 2 is welded on 1 outer wall of heat exchanger tube, and semi-hollow cone blocking 3 is welded between adjacent two heat exchanger tubes 1, on 3 outer wall of semi-hollow cone blocking
Also set up high-temperature-resistant layer；The length of semi-hollow cone blocking 3 is more than or equal to 1 wall thickness of+4 times of heat exchanger tubes of 1.3 times of 1 internal diameters of heat exchanger tube；Tube sheet 2
It welds to form angle welding with 1 end of heat exchanger tube；Semi-hollow cone blocking 3 forms angle welding with 1 end of heat exchanger tube.
In the utility model, high-temperature-resistant layer includes solid composite 4, insulating coating 5 and liquid adhesive layer 6, and liquid bonds
Layer 6 is coated in the lower section of solid composite 4, and insulation fat coating 5 includes stone coated in 4 top of solid composite, solid composite 4
Black fibrous layer 7, carbon fiber layer 8 and fire resisting rare earth layer 9, graphite fibre layer 7, carbon fiber layer 8 and fire resisting rare earth layer 9 are close successively to be arranged
Row；High-temperature-resistant layer thickness is 2mm-5mm；In the utility model, the high-temperature-resistant layer of use has insulation, fire-retardant, resistance to compression, anti-deformation
The advantages of, it is suitable for using under rugged environment, service life is long；Wherein, the fire resisting rare earth layer 9 of setting has heat-insulating, fire-preventing
The advantages of；Improve its fire resistance.
During welding, 1 end of heat exchanger tube to be welded and tube sheet 2 are 15 minutes or so roasting with gas welding heat, will dissolve in Jie of base material
Matter exudation comes, convenient for welding；2 all austenite stainless steel materials of heat exchanger tube 1 and tube sheet after heat is 15 minutes roasting, are acted immediately
First ready common cold water is poured by roasting place, it is desirable that is quickly cooled down, it is therefore an objective to prevent intercrystalline crack；Cleaning heat exchange afterwards
1 terminal interior surface sundries of pipe, is rasped away hard spot, burr, scale with round file or half-round file；Tube sheet 2 and 1 weld seam steel wire of heat exchanger tube
Brush is cleaned out；Select welding rod or welding wire, it then follows the principle to match with heat exchanger tube 1, semi-hollow cone blocking 3,2 material of tube sheet；
Semi-hollow cone blocking 3 both can excessively coordinate with heat exchanger tube 1, can also clearance fit, forbid using interference fit, location dimension with
Subject to designed semi-hollow cone blocking 3 and positioning table 10, welded afterwards.
The utility model is simple in structure, and soldering reliability is high, can reduce the welding stress of welding process generation, avoid collecting
There is weld stress crackle in middle welding cone blocking, prevents occurring new interior leak source during leakage in elimination；Semi-hollow cone blocking 3 can
Elastic construction is formed, after the completion of welding, the less welding stress of energy, is not in secondary crackle.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Within the spirit and principle of utility model, any modifications, equivalent replacements and improvements are made should be included in the utility model
Protection domain within.
Claims (5)
1. a kind of novel heat exchange pipe welding structure, including heat exchanger tube, tube sheet and semi-hollow cone blocking, which is characterized in that the tube sheet
The heat exchange pipe outer wall is welded on, the semi-hollow cone blocking is welded between adjacent two heat exchanger tubes, the semi-hollow cone
High-temperature-resistant layer is also set up on stifled outer wall；
The high-temperature-resistant layer includes solid composite, insulating coating and liquid adhesive layer, and the liquid adhesive layer is coated in described
The lower section of solid composite, for the insulation fat coating coated in above the solid composite, the solid composite includes stone
Black fibrous layer, carbon fiber layer and fire resisting rare earth layer, the graphite fibre layer, carbon fiber layer and fire resisting rare earth layer are closely arranged successively
Row.
A kind of 2. novel heat exchange pipe welding structure according to claim 1, which is characterized in that the semi-hollow cone blocking bottom
Both sides form positioning table, and the width of the positioning table is the heat exchange bore+0.3mm-0.5mm.
A kind of 3. novel heat exchange pipe welding structure according to claim 1, which is characterized in that the length of the semi-hollow cone blocking
Degree is more than or equal to 1.3 times of heat exchange+4 times of bore heat exchange thicknesss of pipe wall.
4. a kind of novel heat exchange pipe welding structure according to claim 1, which is characterized in that the high-temperature-resistant layer thickness is
2mm-5mm。
5. a kind of novel heat exchange pipe welding structure according to claim 1, which is characterized in that the tube sheet and the heat exchange
Tube end welds to form angle welding；The semi-hollow cone blocking forms angle welding with the tube end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721301924.0U CN207414706U (en) | 2017-10-10 | 2017-10-10 | A kind of novel heat exchange pipe welding structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721301924.0U CN207414706U (en) | 2017-10-10 | 2017-10-10 | A kind of novel heat exchange pipe welding structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207414706U true CN207414706U (en) | 2018-05-29 |
Family
ID=62310644
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721301924.0U Active CN207414706U (en) | 2017-10-10 | 2017-10-10 | A kind of novel heat exchange pipe welding structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207414706U (en) |
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2017
- 2017-10-10 CN CN201721301924.0U patent/CN207414706U/en active Active
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