CN218583868U - Floating head structure for floating head heat exchanger - Google Patents
Floating head structure for floating head heat exchanger Download PDFInfo
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- CN218583868U CN218583868U CN202222029133.4U CN202222029133U CN218583868U CN 218583868 U CN218583868 U CN 218583868U CN 202222029133 U CN202222029133 U CN 202222029133U CN 218583868 U CN218583868 U CN 218583868U
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- heat exchanger
- floating head
- welding sleeve
- fixing bolt
- plate
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Abstract
The utility model discloses a heat exchanger technical field's a float head heat exchanger is with floating head structure, including welding cover, tube sheet, sealing washer and fixing bolt, its characterized in that: the welding sleeve is a floating head connecting pipe and is connected to the pipe plate, and the welding sleeve is fixedly arranged on the pipe plate through a fixing bolt; the tube plate is provided with a sealing groove, the O-shaped ring is arranged in the sealing groove on the tube plate, the welding sleeve is sleeved on the outer layer of the tube plate, and the O-shaped ring seals a gap between the welding sleeve and the tube plate to form an independent cavity; the fixing bolt is arranged in a fixing bolt hole of the welding sleeve, and a bolt hole is formed in the side of the suspended area heat exchanger shell pass assembly at the foremost end of the welding sleeve. The utility model has the advantages of convenient installation and replacement, prolonged service life of the heat exchanger and the like.
Description
Technical Field
The utility model relates to a heat exchanger technical field's a float head heat exchanger is with floating head structure.
Background
In food, pharmaceutical equipment and chemical industry, stress concentration is caused by inconsistent deformation quantity generated by a heat exchange tube and a shell when a plurality of heat exchangers are heated, and in order to ensure that a tube plate and a circumferential weld of the heat exchange tube are not damaged by the stress, a designer often adopts a floating head structure, so that the purpose of prolonging the service life of the heat exchanger is realized.
The conventional floating head structure has the following problems:
1. the middle seal of tube sheet and weld sleeve causes O type circle to destroy because fixed mounting, and heat exchanger life subtracts the weak point: when the heat exchanger is installed, the O-shaped ring sealed between the tube plate and the welding sleeve can be extruded and damaged by the edge of the bolt hole of the fixing bolt, so that the problem that the sealing cannot be carried out or the service life of the O-shaped ring is shortened is caused.
2. The transition position of the sharp angle of the tube plate and the welding sleeve is easy to leak: fatigue stress is easily generated under the working condition of cold and hot alternation, particularly, the stress is concentrated at the transition position of the sharp corner of the tube plate and the welding sleeve, and the transition position of the sharp corner of the tube plate and the welding sleeve is damaged by the fatigue stress under the long-time severe working condition, so that leakage is caused;
in conclusion, in order to solve the problems that the O-shaped ring sealed between the tube plate and the welding sleeve is damaged and the transition position of the sharp corner of the tube plate and the welding sleeve is easy to leak, a novel floating head structure for the floating head heat exchanger is needed.
Disclosure of Invention
An object of the utility model is to provide a novel float head heat exchanger with floating head structure, it has the float head structure for the float head heat exchanger of revealing risk, simple structure and being convenient for maintenance that easily installation O type sealing washer, greatly reduced fatigue stress lead to.
The utility model discloses a realize through following technical scheme:
the utility model provides a float head heat exchanger is with floating head structure, includes welding cover, tube sheet, sealing washer and fixing bolt, its characterized in that: the welding sleeve is a floating head connecting pipe and is connected to the pipe plate, and the welding sleeve is fixedly arranged on the pipe plate through a fixing bolt; the tube plate is provided with a sealing groove, the O-shaped ring is arranged in the sealing groove on the tube plate, the welding sleeve is sleeved on the outer layer of the tube plate, and the O-shaped ring seals a gap between the welding sleeve and the tube plate to form an independent sealing cavity; the technical scheme is further explained as follows: the fixing bolt is arranged in a fixing bolt hole of the welding sleeve, and a bolt hole is arranged in a suspended area at the foremost end of the welding sleeve and is positioned on the side of the shell side assembly of the heat exchanger; the technical scheme is further explained as follows: the tube plate is provided with 2 groups of sealing grooves; the technical scheme is further explained as follows: the edge angles or the reducing positions of the welding sleeve and the tube plate are in arc chamfer transition.
Compared with the prior art, the utility model discloses it is to have following beneficial effect:
1. due to the special design of the fixing bolt holes, the problem that the O-shaped sealing ring is extruded and damaged by the edges of the bolt holes of the fixing bolt when the heat exchanger is installed is effectively solved;
2. the fillet transition solves the problem of leakage at the transition due to stress concentration.
Drawings
FIG. 1 is a diagram of a floating head structure for a floating head heat exchanger;
fig. 2 is a schematic diagram of the application of a floating head structure for a floating head heat exchanger.
Description of reference numerals:
the device comprises a welding sleeve 1, a tube plate 2, a sealing ring 3, a fixing bolt 4, an arc chamfer 5, a heat exchanger tube side assembly 6 and a heat exchanger shell side assembly 7.
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings:
the drawing shows a floating head structure diagram and an application schematic diagram for a floating head heat exchanger, and the floating head structure diagram comprises a welding sleeve 1, a tube plate 2, a sealing ring 3, a fixing bolt 4, an arc chamfer 5, a heat exchanger tube side assembly 6 and a heat exchanger shell side assembly 7.
In order to solve the problem that an O-shaped ring connected and sealed between a tube plate and a welding sleeve is extruded and damaged by an installed fixing bolt, a bolt hole is designed to be positioned in a suspended area, far away from a sealing groove, of the foremost end of the welding sleeve, so that the innermost side of the fixing bolt hole is larger than the outer diameter of the O-shaped ring, and the O-shaped ring cannot be cut and damaged by a sharp corner of the fixing bolt hole in a heat exchanger shell pass assembly when the heat exchanger shell pass assembly is installed from an A end to a B end, so that the function of protecting the O-shaped sealing ring is realized;
in order to reduce the damage of the pipe fitting caused by stress concentration at the welding and reducing positions, fillet transition is adopted at all sharp corners of the welding sleeve and the pipe plate, so that the fatigue stress at the transition position is uniformly distributed, and the fracture leakage caused by fatigue damage at the transition position is greatly reduced.
Above-mentioned technical scheme is only an implementation of the utility model discloses an among the technical personnel in this field, the utility model discloses a make various types of improvement or deformation very easily on the basis of application method and principle, above-mentioned improvement or deformation all are in the protection within the scope of the utility model.
Claims (4)
1. The utility model provides a float head heat exchanger is with floating head structure, includes welding cover, tube sheet, sealing washer and fixing bolt, its characterized in that: the welding sleeve is a floating head connecting pipe and is connected to the pipe plate, and the welding sleeve is fixedly arranged on the pipe plate through a fixing bolt; the pipe plate is provided with a sealing groove, the O-shaped ring is arranged in the sealing groove on the pipe plate, the welding sleeve is sleeved on the outer layer of the pipe plate, and the O-shaped ring seals a gap between the welding sleeve and the pipe plate to form an independent sealing cavity.
2. The floating head structure for the floating head heat exchanger according to claim 1, wherein: the fixing bolt is arranged in a fixing bolt hole of the welding sleeve, and a bolt hole is formed in a suspended area at the foremost end of the welding sleeve and is located on the shell side assembly of the heat exchanger.
3. The floating head structure for the floating head heat exchanger according to claim 1, wherein: and 2 groups of sealing grooves are formed in the tube plate.
4. The floating head structure for the floating head heat exchanger according to claim 1, wherein: and the edge angles or the reducing positions of the welding sleeve and the tube plate are in arc chamfer transition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222029133.4U CN218583868U (en) | 2022-08-03 | 2022-08-03 | Floating head structure for floating head heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222029133.4U CN218583868U (en) | 2022-08-03 | 2022-08-03 | Floating head structure for floating head heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218583868U true CN218583868U (en) | 2023-03-07 |
Family
ID=85361432
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222029133.4U Active CN218583868U (en) | 2022-08-03 | 2022-08-03 | Floating head structure for floating head heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218583868U (en) |
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2022
- 2022-08-03 CN CN202222029133.4U patent/CN218583868U/en active Active
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