CN201331281Y - Single double-pipe heat exchanger with packing type ends - Google Patents
Single double-pipe heat exchanger with packing type ends Download PDFInfo
- Publication number
- CN201331281Y CN201331281Y CNU2008201135773U CN200820113577U CN201331281Y CN 201331281 Y CN201331281 Y CN 201331281Y CN U2008201135773 U CNU2008201135773 U CN U2008201135773U CN 200820113577 U CN200820113577 U CN 200820113577U CN 201331281 Y CN201331281 Y CN 201331281Y
- Authority
- CN
- China
- Prior art keywords
- packing
- heat exchanger
- single double
- pipe heat
- tube heat
- 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.)
- Expired - Fee Related
Links
- 238000012856 packing Methods 0.000 title claims abstract description 55
- 210000004907 gland Anatomy 0.000 claims description 9
- 238000005493 welding type Methods 0.000 claims description 3
- 230000008646 thermal stress Effects 0.000 abstract description 7
- 239000000126 substance Substances 0.000 abstract description 5
- 238000012423 maintenance Methods 0.000 abstract 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 abstract 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000003513 alkali Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 230000035882 stress Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 238000004131 Bayer process Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003518 caustics Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Abstract
The utility model provides a single double-pipe heat exchanger with packing type ends, that is, connecting ends of the inner and the outer pipes of the single double-pipe heat exchanger adopt welded fixed ends while the other ends adopt packing type ends. Each of the packing type ends comprises a packing box, a packing press cover, a packing, a packing bushing and a connecting bolt, and can enable the inner and the outer pipes to realize relatively free motion and eliminate the thermal stress caused by temperature difference. The utility model has the characteristics of simple structure, low cost, reliable performance and simple maintenance, thereby being extensively applicable to double-pipe heat exchangers in the chemical and the metallurgical industries, especially to the single double-pipe heat exchangers made of aluminum oxide.
Description
Technical field
The utility model belongs to the chemical industry metallurgical mechanical discipline, is specifically related to single double-tube heat exchanger of Bayer process alumina producing and the sleeve end header structure that other chemical industry is used double-tube heat exchanger.
Background technology
Single double-tube heat exchanger is a kind of equipment that is used for heat-exchanging process in the Chemical Manufacture, as a kind of heat exchanger that heats ore pulp, divides inner and outer pipes in the stripping operation of alumina producing, be about 81m, be welded by many pipes, interior pipe is walked the slip of low temperature, and the inner and outer pipe chuck is walked high temperature steam.Sleeve end is first has used fixedly Type of Welding since straight, because the temperature difference of inner and outer pipes is inequality, the temperature difference maximum in the technological operation can reach 150 ℃, can produce very big thermal stress in the production, under the alkali environmental condition, the easy caustic embrittlement of interior pipe weld seam cracks, pipe drawing crack material spray in causing, each interior pipe drawing crack material spray deals with consuming time, needs the off-time long, lose very greatly, and the alkali slip that contains of ejection all causes a lot of threats to operating personnel's personal safety and surrounding environment.
The all alumina producers in the whole nation all are to use fixed termination at present, and the two ends of sleeve pipe are stiff end, adopt welding manner to fix, and inner and outer pipes can not relatively freely stretch, because the inner and outer pipes temperature difference is different, butt welded seam has added a very big stress.
The utility model content
In order effectively to solve the problem of single double-tube heat exchanger because of the very big thermal stress of the big generation of the inner and outer pipes temperature difference, the utility model provides a kind of packing-type termination single double-tube heat exchanger, and inner and outer pipes can relatively freely stretch, and can effectively eliminate because the thermal stress that the temperature difference causes.
The technical scheme that its technical problem that solves the utility model adopts is:
The connection of the single double-tube heat exchanger inner and outer pipes in this packing-type termination, an end adopts the fixed termination of Type of Welding, and the other end adopts the packing-type termination.The packing case is welded on single double-tube heat exchanger outer tube termination, the packing lining is welded on the interior pipe of single double-tube heat exchanger, packing gland, packing case are actively set on the packing lining, fill some packings in the packing case, by packing gland and connecting bolt, nut packing are compressed.
Calculate the inner and outer pipes maximum temperature difference according to technological parameter, reach the specific elongation of maximum possible under this temperature difference, and combined process pressure, the quantity of decision packing if leaking appears in packing, can be eliminated the leakage of material by compressing packing.
The beneficial effects of the utility model: can realize the free relatively movable of single double-tube heat exchanger inner and outer pipes, eliminating because technological operation changes causes excessive temperature differentials to cause big thermal stress, reduce the internally additional stress effect of pipe weld seam, reach the effect that prolongs single double-tube heat exchanger service life.The packing-type termination adopt packing_seal have simple in structure, expense is low, dependable performance is safeguarded characteristic of simple, when sealing leak occurring, only need compress the leakage that packing just can be eliminated material.Single double pipe heater of the double-tube heat exchanger that can be widely used in chemical industry and metallurgical industry, particularly alumina producing.
Description of drawings
The single double-tube heat exchanger structural representation in Fig. 1 packing-type termination.
Fig. 2 packing-type end structure schematic diagram.
Among the figure, 1 be pipe in the heat exchanger, 2 for packing-type termination, 3 is the heat exchanger outer tube, 4 be chuck, 5 for fixed termination, 6 for flange, 7 for the packing lining, 8 for packing gland, 9 for bolt, 10 for nut, 11 for packing, 12 be the packing case.
The specific embodiment
Referring to Fig. 1, Fig. 2, the fixed termination 5 of single double-tube heat exchanger one end is designed to packing-type termination 2.Packing-type termination 2 is made up of packing lining 7, packing gland 8, packing case 12, packing 11, bolt 9 and nut 10.Packing lining 7 is welded on manages in the heat exchanger on 1, and packing gland 8 is actively set on the packing lining 7 with packing case 12, adopts bolt 9 to be connected with nut 10; Packing case 12 adopts welding manner to be connected with heat exchanger outer tube 3.Packing 11 with heatproof, self-lubricating in the packing case 12 fills up, and compresses by the packing 11 in packing gland 8, bolt 9 and 10 pairs of packing casees of nut 12, realizes the sealing to media such as condensed water in single double-tube heat exchanger chuck 4 and steam.When pipe 1 in single double-tube heat exchanger produced thermal stress with outer tube 3 temperature difference, heat exchanger outer tube 3 can slide on packing lining 7 by packing case 12 and packing 11 like this, eliminated producing thermal stress.
Claims (3)
1, the single double-tube heat exchanger in a kind of packing-type termination includes inner and outer pipes and termination, it is characterized in that: the connection of inner and outer pipes, and an end adopts the fixed termination (5) of Type of Welding, and the other end adopts packing-type termination (2).
2, the single double-tube heat exchanger in packing-type termination according to claim 1, it is characterized in that: packing-type termination (2) are made up of packing case (12), packing gland (8), packing (11), packing lining (7) and connecting bolt (9), nut (10).
3, the single double-tube heat exchanger in packing-type termination according to claim 1, it is characterized in that: packing case (12) is welded on single double-tube heat exchanger outer tube (3) termination, packing lining (7) is welded on manages on (1) in single double-tube heat exchanger, packing gland (8), packing case (12) are actively set on the packing lining (7), fill some packings (11) in the packing case (12), packing (11) is compressed by packing gland (8) and connecting bolt (9), nut (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201135773U CN201331281Y (en) | 2008-11-20 | 2008-11-20 | Single double-pipe heat exchanger with packing type ends |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201135773U CN201331281Y (en) | 2008-11-20 | 2008-11-20 | Single double-pipe heat exchanger with packing type ends |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201331281Y true CN201331281Y (en) | 2009-10-21 |
Family
ID=41224663
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201135773U Expired - Fee Related CN201331281Y (en) | 2008-11-20 | 2008-11-20 | Single double-pipe heat exchanger with packing type ends |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201331281Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102410745A (en) * | 2011-10-31 | 2012-04-11 | 天津三泰晟驰科技股份有限公司 | Protecting sheath for high-temperature-resistant camera shooting device in heating furnace |
| CN108627025A (en) * | 2018-05-28 | 2018-10-09 | 张化机（苏州）重装有限公司 | A kind of inlet tube structure of condensate water pot |
-
2008
- 2008-11-20 CN CNU2008201135773U patent/CN201331281Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102410745A (en) * | 2011-10-31 | 2012-04-11 | 天津三泰晟驰科技股份有限公司 | Protecting sheath for high-temperature-resistant camera shooting device in heating furnace |
| CN108627025A (en) * | 2018-05-28 | 2018-10-09 | 张化机（苏州）重装有限公司 | A kind of inlet tube structure of condensate water pot |
| CN108627025B (en) * | 2018-05-28 | 2023-11-21 | 张化机（苏州）重装有限公司 | Inlet pipe structure of condensate water tank |
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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 |
Granted publication date: 20091021 Termination date: 20171120 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |