CN110425365A - A kind of novel bellows compensator - Google Patents
A kind of novel bellows compensator Download PDFInfo
- Publication number
- CN110425365A CN110425365A CN201910788334.2A CN201910788334A CN110425365A CN 110425365 A CN110425365 A CN 110425365A CN 201910788334 A CN201910788334 A CN 201910788334A CN 110425365 A CN110425365 A CN 110425365A
- Authority
- CN
- China
- Prior art keywords
- tube
- bellows
- outer tube
- sleeve
- welded
- Prior art date
- 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.)
- Granted
Links
- 239000000945 filler Substances 0.000 claims description 21
- 239000000919 ceramic Substances 0.000 claims description 12
- 239000000835 fiber Substances 0.000 claims description 10
- 238000003466 welding Methods 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 3
- 238000004904 shortening Methods 0.000 claims description 3
- 238000003860 storage Methods 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 2
- 230000029058 respiratory gaseous exchange Effects 0.000 abstract description 5
- 239000000126 substance Substances 0.000 abstract description 3
- 201000010099 disease Diseases 0.000 abstract 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 abstract 1
- 239000006229 carbon black Substances 0.000 description 8
- 239000004215 Carbon black (E152) Substances 0.000 description 5
- 229930195733 hydrocarbon Natural products 0.000 description 5
- 150000002430 hydrocarbons Chemical class 0.000 description 5
- 239000000843 powder Substances 0.000 description 5
- 238000007789 sealing Methods 0.000 description 3
- 239000000779 smoke Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 206010016256 fatigue Diseases 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 238000002679 ablation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 208000016254 weariness Diseases 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L51/00—Expansion-compensation arrangements for pipe-lines
- F16L51/02—Expansion-compensation arrangements for pipe-lines making use of bellows or an expansible folded or corrugated tube
- F16L51/025—Expansion-compensation arrangements for pipe-lines making use of bellows or an expansible folded or corrugated tube with several corrugations
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
A kind of novel bellows compensator is made of bellows, outer tube, inner tube, bottom tube and stuffing box etc.；The upper end of bellows and the lower end of inner tube are welded, and the lower end of bellows and the upper end of bottom tube are welded, and outer tube sleeve is in bellows and interior tube outside, the flanging welded of the lower end and bottom tube lower end of outer tube；Part below novel bellows compensator stuffing box is surrounded the structure of one similar " sleeve " by outer tube, inner tube, bottom tube and entire bellows jointly, though thering is elongation to shorten in the same old way in bellows work therein, but because outer tube reaches always the cause at bottom, the length of " sleeve " becomes changeless, it is little that the variation influence on " sleeve " internal capacity is shortened in the elongation of bellows, essentially eliminate " breathing " disease of corrugated expansion joint, it is ensured that infringement of the bellows from infringement and the chemical attack of over fatigue；Solve traditional corrugated expansion joint, because of part below stuffing box, " breathing " as accordion bellows and lead to bellows service life problem far not up to standard.
Description
Technical field
The present invention relates to the tube sheet of a kind of chemical industry equipment, especially carbon black air preheater heat exchanger tube heat expansion flexible compensation is close
Seal apparatus.
Background technique
Traditional corrugated expansion joint is that carbon black industry solves the flexible sealing compensation dress general in the world of heat exchanger tube heat expansion
It sets；Its structure is as shown in Fig. 2, by bellows (21), inner tube (22), short tube (23), stuffing box (24), ceramic fibre (25)
It is formed with filler lid plate (26)；The lower end of inner tube cushions the short tube of the slightly larger point of a diameter, and covers the ripple in interior tube outside
It welds the lower end of pipe；The upper end of bellows and the diameter shrinkage part of the stuffing box lower end of loop on inner pipe weld；On preheater
Inner tube set is on heat exchanger tube (B) when installation, while puts into stuffing box in the pore of upper perforated plate (A), the outer surface of stuffing box with
Tube-sheet Welding, the upper end of inner tube and heat exchanger tube weld；Ceramic fibre is put into stuffing box, it is solid to cover filler lid plate spot welding
It is fixed；Working principle is, inner tube follows heat exchanger tube to move up when heat exchanger tube heat expansion, and bellows compresses at this time；When heat exchanger tube shrinkage
Inner tube follows heat exchanger tube to move down, and bellows elongates at this time；Flow media-air in the course of work below tube sheet, always
It is obstructed to enter above tube sheet by bellows and go, avoid the air below the high temperature carbon black smoke and tube sheet above tube sheet
Fire occurs for mixing；This is the due compensation of corrugated expansion joint and sealing function；But this traditional corrugated expansion joint
Bellows, the service life on carbon black air preheater are not grown；The fatigue life of bellows is by national standard 1000 times
Manufacture, 1000 standards can be used 10 years to 15 years for the production line of most of carbon black enterprises, but bellows
Actual life there was only for 3~5 years；The serious reason not up to standard of service life, is traditional corrugated expansion joint work
In " can breathe "；When heat exchanger tube expands with heat and contract with cold, the bellows being connected to below stuffing box, together with inner tube as accordion
Bellows equally elongate shortening and are breathed, and the entrance of breathing is stuffing box；The upper surface of air preheater upper perforated plate is " upper cigarette
Case " is full of carbon black smoke in " upper smoke box "；Tradition corrugated expansion joint is " suction " when heat exchanger tube shrinkage, with hydrocarbon black powder
Bottom position is sunk in gap beside flue gas inspiration stuffing box bellows below；Because the solid particle of hydrocarbon black powder is very
Tiny, along with ceramic fibre has " ablation " phenomenon, ceramic fibre fills completely closely also to will appear gap again again, so ceramic
Fiber can't stop hydrocarbon black powder；Corrugated expansion joint is " exhaling " when heat exchanger tube heat expansion, but sinks to the hydrocarbon black powder " exhaling " of bottom no
It goes out；" breathing " often, the hydrocarbon black powder of precipitating is more and more, has piled with the gap space of bottom bellows；As a result, one
It is that bottom bellows is made to lose a part of compensation ability, forces upper bellows by the punishment for aggravating weariness working；Second is that making
Bottom bellows causes the punishment of carbon black long-term corrosion, and here it is traditional corrugated expansion joints on carbon black air preheater,
The main reason for service life is not seriously up to standard.
Summary of the invention
To solve the above-mentioned problems, the present invention proposes improvement project to prior art tradition corrugated expansion joint, makes novel
Corrugated expansion joint thoroughly gives up the fatal defects of " can breathe " on the basis of keeping compensation sealing function.
The technical solution adopted by the present invention to solve the technical problems is: a kind of novel bellows compensator, by bellows
(1), outer tube (2), inner tube (3), bottom tube (4), filler box plate (5), ceramic fibre (6) and filler lid plate (7) composition；It is special
Sign is: bellows is integrally formed metal bellows, and there is straight flange at the both ends of bellows, and the internal diameter of bellows is greater than heat exchanger tube
(B) outer diameter；Outer tube is straight tube, and internal diameter is greater than the outer diameter of bellows；Inner tube is straight tube, and internal diameter is outer slightly larger than heat exchanger tube
Diameter；The top of bottom tube is straight tube, and lower end turned-out a side, the internal diameter of bottom tube are slightly larger than the outer diameter of heat exchanger tube；Stuffing box bottom
Plate and filler lid plate are all annular slabs, and annular slab outer diameter is slightly less than the internal diameter of outer tube, and annular slab internal diameter is greater than the outer diameter of inner tube；
The upper end straight flange of bellows and the lower end of inner tube are welded, and the lower end straight flange of bellows and the upper end of bottom tube are welded, and outer tube sleeve is in wave
Line pipe and interior tube outside, the lower end of outer tube and the flanging welded of bottom tube lower end, filler box plate are welded on the inside above outer tube
Apart from 6~8 centimeters of the position in outer tube upper end；The top of filler box plate and inner and outer tubes collectively constitutes stuffing box, ceramics
Fiber fills stuffing box, filler lid plate spot welding is fixed on the upper end of outer tube；Novel bellows compensator is in air preheater
On installation site be that the top of outer tube is welded on the pore of tube sheet (A), upper end of inner tube is welded on heat exchanger tube (B)；Heat exchange
Inner tube follows heat exchanger tube to move up elongation bellows when pipe heat expansion, and inner tube follows heat exchanger tube to move down pressure when heat exchanger tube shrinkage
Contracting bellows, flow media-air in the course of work below tube sheet, is obstructed by bellows always, does not enter above upper perforated plate
It goes；Below novel bellows compensator stuffing box part by outer tube, inner tube, bottom tube and entire bellows surround jointly one it is similar
The structure of " sleeve ", although thering is elongation to shorten in the same old way in bellows therein work, because outer tube reaches always the cause at bottom,
The length of " sleeve " becomes changeless, and the elongation shortening of bellows is little on the variation of " sleeve " internal capacity influence,
It can be ignored；In the above position in lower end bottom tube flange part of " sleeve ", the storage tank of bellows is avoided provided with one section
“e”。
The beneficial effects of the present invention are: 1. have been changed to length due to the structure of part below novel bellows compensator stuffing box
Changeless tube-in-tube structure is spent, traditional corrugated expansion joint stuffing box or less part is eliminated and is elongated as accordion bellows
" breathing " disadvantage shortened, protects bellows from the infringement of infringement and the chemical attack of over fatigue, it is ensured that bellow-type expansion
Device service life stably reaching standard；2. novel bellows compensator of the present invention, structure upper exterior tube surrounds bellows outside, this is pacifying
In terms of assembly and disassembly unload aspect and the process that works online, outer tube all plays the role of the physical protection to bellows.
Detailed description of the invention
Fig. 1 is a kind of novel bellows compensator structural schematic diagram of the present invention and embodiment.
Fig. 2 is the structural schematic diagram of traditional corrugated expansion joint.
1. bellows in Fig. 1,2. outer tubes, 3. inner tubes, 4. bottom tubes, 5. filler box plates, 6. ceramic fibres, 7. filler box covers
Plate, A. indicate that air preheater upper perforated plate, B. indicate that heat exchanger tube, e. indicate the storage tank for avoiding bellows newly set.
21. bellows in Fig. 2,22. inner tubes, 23. short tubes, 24. stuffing boxes, 25. ceramic fibres, 26. filler lid plates, A.
Indicate that air preheater upper perforated plate, B. indicate heat exchanger tube.
Specific embodiment
A kind of novel bellows compensator, by bellows (1), outer tube (2), inner tube (3), bottom tube (4), filler box plate
(5), ceramic fibre (6) and filler lid plate (7) composition；The upper end straight flange of bellows and the lower end of inner tube are welded, bellows
The welding of the upper end of lower end straight flange and bottom tube, outer tube sleeve is in bellows and interior tube outside, the flange of the lower end and bottom tube lower end of outer tube
Welding, filler box plate is welded on the inside above outer tube, apart from 6~8 centimeters of the position in outer tube upper end.
Claims (1)
1. a kind of novel bellows compensator, by bellows (1), outer tube (2), inner tube (3), bottom tube (4), filler box plate (5),
Ceramic fibre (6) and filler lid plate (7) composition；It is characterized in that: bellows is integrally formed metal bellows, the two of bellows
There is straight flange at end, and the internal diameter of bellows is greater than the outer diameter of heat exchanger tube (B)；Outer tube is straight tube, and internal diameter is greater than the outer diameter of bellows；It is interior
Pipe is straight tube, and internal diameter is slightly larger than the outer diameter of heat exchanger tube；The top of bottom tube is straight tube, the turned-out side in lower end, bottom tube
Internal diameter is slightly larger than the outer diameter of heat exchanger tube；Filler box plate and filler lid plate are all annular slabs, and annular slab outer diameter is slightly less than outer tube
Internal diameter, annular slab internal diameter be greater than inner tube outer diameter；The upper end straight flange of bellows and the lower end of inner tube are welded, the lower end of bellows
The welding of the upper end of straight flange and bottom tube, outer tube sleeve is in bellows and interior tube outside, the lower end of outer tube and the flanging welded of bottom tube lower end,
Filler box plate is welded on the inside above outer tube, apart from 6~8 centimeters of the position in outer tube upper end；Filler box plate and inner tube and
The top of outer tube collectively constitutes stuffing box, and ceramic fibre is filled stuffing box, and filler lid plate spot welding is fixed on the upper of outer tube
End；Below novel bellows compensator stuffing box part by outer tube, inner tube, bottom tube and entire bellows surround jointly one it is similar
The structure of " sleeve ", although thering is elongation to shorten in the same old way in bellows therein work, because outer tube reaches always the cause at bottom,
The length of " sleeve " becomes changeless, and the elongation shortening of bellows is little on the variation of " sleeve " internal capacity influence,
It can be ignored；In the above position in lower end bottom tube flange part of " sleeve ", the storage tank of bellows is avoided provided with one section
“e”。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910788334.2A CN110425365B (en) | 2019-08-26 | 2019-08-26 | Novel corrugated pipe compensator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910788334.2A CN110425365B (en) | 2019-08-26 | 2019-08-26 | Novel corrugated pipe compensator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110425365A true CN110425365A (en) | 2019-11-08 |
| CN110425365B CN110425365B (en) | 2024-01-12 |
Family
ID=68417471
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910788334.2A Active CN110425365B (en) | 2019-08-26 | 2019-08-26 | Novel corrugated pipe compensator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110425365B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1580462A (en) * | 1968-07-11 | 1969-09-05 | ||
| DD137749A1 (en) * | 1978-07-12 | 1979-09-19 | Eckard Ballke | AXIAL TUBE COMPENSATOR |
| CN2216198Y (en) * | 1995-03-20 | 1995-12-27 | 成都发动机公司 | Double-element thermal compensation tube-and-plate high-temp. air preheater |
| CN2811724Y (en) * | 2005-08-19 | 2006-08-30 | 王行山 | Corrugated pipe compensator |
| CN202973156U (en) * | 2012-11-15 | 2013-06-05 | 成都成发科能动力工程有限公司 | Jacket cooling dual-element heat compensating tube plate type high-temperature air pre-heater |
| CN103216699A (en) * | 2012-01-18 | 2013-07-24 | 金沙 | Detachable expansion joint compensator device |
| CN204127558U (en) * | 2014-08-28 | 2015-01-28 | 中橡集团炭黑工业研究设计院 | A kind of preheater single tube compensator for carbon black smoke cooling |
-
2019
- 2019-08-26 CN CN201910788334.2A patent/CN110425365B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1580462A (en) * | 1968-07-11 | 1969-09-05 | ||
| DD137749A1 (en) * | 1978-07-12 | 1979-09-19 | Eckard Ballke | AXIAL TUBE COMPENSATOR |
| CN2216198Y (en) * | 1995-03-20 | 1995-12-27 | 成都发动机公司 | Double-element thermal compensation tube-and-plate high-temp. air preheater |
| CN2811724Y (en) * | 2005-08-19 | 2006-08-30 | 王行山 | Corrugated pipe compensator |
| CN103216699A (en) * | 2012-01-18 | 2013-07-24 | 金沙 | Detachable expansion joint compensator device |
| CN202973156U (en) * | 2012-11-15 | 2013-06-05 | 成都成发科能动力工程有限公司 | Jacket cooling dual-element heat compensating tube plate type high-temperature air pre-heater |
| CN204127558U (en) * | 2014-08-28 | 2015-01-28 | 中橡集团炭黑工业研究设计院 | A kind of preheater single tube compensator for carbon black smoke cooling |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110425365B (en) | 2024-01-12 |
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