CN2765131Y - A sealing apparatus applicable to calandria type heat exchanger - Google Patents
A sealing apparatus applicable to calandria type heat exchanger Download PDFInfo
- Publication number
- CN2765131Y CN2765131Y CN 200520068707 CN200520068707U CN2765131Y CN 2765131 Y CN2765131 Y CN 2765131Y CN 200520068707 CN200520068707 CN 200520068707 CN 200520068707 U CN200520068707 U CN 200520068707U CN 2765131 Y CN2765131 Y CN 2765131Y
- Authority
- CN
- China
- Prior art keywords
- tubulation
- sealing ring
- tube plate
- perforated plate
- heat exchanger
- 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
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- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The utility model discloses a sealing device which is suitable for tubular heat exchanger in the technical field of heat exchangers, which comprises an upper tube plate which is arranged in an upper air collecting box and a lower tube plate which is arranged in a lower air collecting box, wherein a plurality of tubes communicating the upper air collecting box and the lower air collecting body are arranged between the upper tube plate and the lower tube plate, and one end of each tube is welded with the upper tube plate or the lower tube plate; the other tube plate corresponding to the tube plate of the welding ends is provided with a sealing ring. The tubes penetrate through the sealing ring and the tube plate on which the sealing ring is arranged, and a flexible graphite gasket is arranged in an annular space between the tubes and the sealing ring. The sealing ring is in threaded connection with hollow screw studs which are sheathed on the tubes and axially compress the flexible graphite gasket. The utility model enables the tubes to freely extend downwards when the tubes expanded by heating and has the advantages of good seal, high safety, easy assembly and low cost.
Description
Technical field
The utility model relates to a kind of sealing device, particularly a kind of sealing device that is applicable to tubular heat exchanger.
Background technology
In the prior art, a kind of tubular heat exchanger is arranged, gang up mutually for preventing cold and hot fluid, its sealing device mainly comprises upper perforated plate that is arranged in the plenum chamber and the lower perforated plate that is arranged at down in the plenum chamber, be provided with some tubulations that are arranged in parallel and connect plenum chamber and following plenum chamber between upper perforated plate and the lower perforated plate, the upper end of tubulation is welded on the upper perforated plate that is provided with in the plenum chamber, and the lower end of tubulation is welded on down on the lower perforated plate that is provided with in the plenum chamber.During work, by cold fluid (for example normal temperature air), manage outer cross-current superheated fluid (for example high-temperature flue gas) in the pipe; Otherwise perhaps cold fluid and hot fluid promptly flows through hot fluid in the pipe mutually, and the outer cold fluid that flows through of pipe.When in pipe, outside managing, flowing through cold and hot fluid simultaneously, can realize exchange heat.In order preventing, and to make upper and lower tube plate deformation, drawing crack weld seam, thereby to influence the sealing property of tubular heat exchanger, bend pipe can be made in the tubulation stage casing because of the tubulation expanded by heating.The shortcoming of this structure is: behind (1) oblique bend pipe expanded by heating, can only offset a part of thermal stress, the weld seam at tubulation two ends still can be subjected to the effect of thermal stress, so it still is easy to cracking; (2) upper perforated plate and lower perforated plate are inhomogeneous because of the thermal stress that the tubulation expanded by heating is produced, and are out of shape; (3) tubulation is made bending tube, have certain difficulty, and increased manufacturing cost, and inconvenience is installed.
The utility model content
The purpose of this utility model provides a kind of sealing device that is applicable to tubular heat exchanger, and tubulation one end can freely be extended, and good seal is safe and reliable, is easy to manufacture and assemble.
The purpose of this utility model is achieved in that a kind of sealing device that is applicable to tubular heat exchanger, comprise and be arranged at the upper perforated plate in the plenum chamber and be arranged at down the interior lower perforated plate of plenum chamber, be provided with the tubulation of plenum chamber and following plenum chamber in some connections between upper perforated plate and the lower perforated plate, described tubulation one end welds mutually with one of upper perforated plate or lower perforated plate, be provided with sealing ring with corresponding another tube sheet of the tube sheet of welding ends, described tubulation passes the tube sheet at sealing ring and sealing ring place, be provided with the soft graphite packing ring in the annular space between tubulation and the sealing ring, being threaded on the described sealing ring is socketed on the tubulation and the hollow stud of axial compression soft graphite packing ring.
One end of tubulation described in the utility model directly is welded on arbitrary tube sheet, and the other end of tubulation passes another tube sheet, utilize the radially fixing and sealing of hollow stud, sealing ring and soft graphite packing ring with the tubulation lower end, the other end of tubulation can axially freely be extended, be unlikely to because of expanded by heating extruding soft graphite packing ring causes poor sealing, upper perforated plate and lower perforated plate are not subjected to the influence of tubulation thermal stress, thereby, not yielding, use more reliable; Owing to compress hollow stud outside tube sheet, be easy to push tight soft graphite packing ring, make its easy accessibility; As seen the utility model good seal is safe and reliable, is easy to assembling.
Described tubulation can be straight tube.This scheme can save the operation of tubulation bend pipe, has reduced manufacturing cost.
Can be provided with spoiler in the described tubulation, form the flow-disturbing pipe, can obtain bigger heat transfer area and better heat-transfer effect.Certainly, tubulation can be a light pipe of not being with spoiler also, and it is simple in structure, and is easily manufactured.
Description of drawings
Fig. 1 is the utility model structural representation;
Fig. 2 is the partial enlarged drawing of A among Fig. 1;
Wherein, 1. go up plenum chamber, 2. tubulation, 3. upper perforated plate, 4. spoiler, 5. lower perforated plate 6. plays plenum chamber, 7. hollow stud, 8. sealing ring, 9. soft graphite packing ring.
The specific embodiment
As illustrated in fig. 1 and 2, for being arranged at the sealing device in the tubular heat exchanger, comprise some tubulations 2, have spoiler 4 in the described tubulation 2, the upper perforated plate 3 that is provided with in the plenum chamber 1 is passed on the top of tubulation 2, and stretch out upper perforated plate 5～10mm height, be beneficial to itself and upper perforated plate 3 continuous weldings together along the periphery of tubulation ledge; The lower perforated plate 5 that is provided with in the plenum chamber 6 is passed down in the lower end of tubulation 2, and exposes certain-length; The lower surface of lower perforated plate 5 is welded with the sealing ring 8 with tubulation 2 coaxial settings, be provided with soft graphite packing ring 9 in the annular space between the section of stretching out of described sealing ring 8 and tubulation 2 lower ends, be socketed with the hollow stud 7 of axial compression soft graphite packing ring on the section of stretching out of tubulation 2 lower ends, hollow stud 7 is threaded with sealing ring 8, tighten and compress double- screw bolt 7,9 crimps of soft graphite packing ring can be compressed tubulation, guaranteed the sealing between tubulation 2 lower ends and the lower perforated plate 5, tubulation 2 lower ends are because of the retractable that expands with heat and contract with cold.
Claims (4)
1, a kind of sealing device that is applicable to tubular heat exchanger, comprise and be arranged at the upper perforated plate in the plenum chamber and be arranged at down the interior lower perforated plate of plenum chamber, be provided with the tubulation of plenum chamber and following plenum chamber in some connections between upper perforated plate and the lower perforated plate, it is characterized in that: described tubulation one end welds mutually with one of upper perforated plate or lower perforated plate, be provided with sealing ring with corresponding another tube sheet of the tube sheet of welding ends, described tubulation passes the tube sheet at sealing ring and sealing ring place, be provided with the soft graphite packing ring in the annular space between tubulation and the sealing ring, being threaded on the described sealing ring is socketed on the tubulation and the hollow stud of axial compression soft graphite packing ring.
2, a kind of sealing device that is applicable to tubular heat exchanger according to claim 1, it is characterized in that: described tubulation is a straight tube.
3, a kind of sealing device that is applicable to tubular heat exchanger according to claim 1 and 2 is characterized in that: be provided with spoiler in the described tubulation.
4, a kind of sealing device that is applicable to tubular heat exchanger according to claim 1 and 2, it is characterized in that: described tubulation is a light pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520068707 CN2765131Y (en) | 2005-01-25 | 2005-01-25 | A sealing apparatus applicable to calandria type heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520068707 CN2765131Y (en) | 2005-01-25 | 2005-01-25 | A sealing apparatus applicable to calandria type heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2765131Y true CN2765131Y (en) | 2006-03-15 |
Family
ID=36168049
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520068707 Expired - Fee Related CN2765131Y (en) | 2005-01-25 | 2005-01-25 | A sealing apparatus applicable to calandria type heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2765131Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101906495A (en) * | 2010-07-29 | 2010-12-08 | 江苏中天能源设备有限公司 | Gas preheating combined heat pipe exchanger |
| CN103185350A (en) * | 2011-12-29 | 2013-07-03 | 洛阳合纵石化工程有限公司 | Glass tube air preheater |
| CN105066744A (en) * | 2015-08-03 | 2015-11-18 | 南通京通石墨设备有限公司 | Tube nest type graphite heat exchanger |
-
2005
- 2005-01-25 CN CN 200520068707 patent/CN2765131Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101906495A (en) * | 2010-07-29 | 2010-12-08 | 江苏中天能源设备有限公司 | Gas preheating combined heat pipe exchanger |
| CN103185350A (en) * | 2011-12-29 | 2013-07-03 | 洛阳合纵石化工程有限公司 | Glass tube air preheater |
| CN105066744A (en) * | 2015-08-03 | 2015-11-18 | 南通京通石墨设备有限公司 | Tube nest type graphite 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: 20060315 Termination date: 20120125 |