CN210220808U - Core-pulling hairpin type heat exchanger tube box sealing structure - Google Patents
Core-pulling hairpin type heat exchanger tube box sealing structure Download PDFInfo
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- CN210220808U CN210220808U CN201920652441.8U CN201920652441U CN210220808U CN 210220808 U CN210220808 U CN 210220808U CN 201920652441 U CN201920652441 U CN 201920652441U CN 210220808 U CN210220808 U CN 210220808U
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Abstract
A core-pulling hairpin type heat exchanger tube box sealing structure comprises a tube box flange, a shell pass special-shaped flange and a tube plate; a positioning ring is arranged between the outer edge of the tube plate and the inner wall of the shell pass special-shaped flange for axial positioning, so that the sealing surfaces of the tube plate and the shell pass special-shaped flange are on the same plane; and sealing grooves are processed at the adjacent positions of the outer end face of the tube plate and the end face of the shell pass special-shaped flange, and metal ring gaskets are arranged in the sealing grooves on the end faces of the sealing grooves and the tube box flange, so that the tube and the shell pass are synchronously sealed by the metal gaskets between the shell pass special-shaped flange and the tube plate. The utility model discloses a single seal structure has realized that the tube journey is synchronous sealed, when guaranteeing that the tube bank can be loosed core, has solved that the tradition can take out the tube bank hairpin formula heat exchanger multiple spot sealing reliability is poor, the gasket load difference has conquassation risk scheduling problem greatly.
Description
Technical Field
The utility model relates to a hairpin formula heat exchanger seal structure especially relates to the tube bank can be loosed core, the sealed single tube sheet hairpin formula heat exchanger of separation of tube journey.
Background
The structure of the existing loose core hairpin type heat exchanger is shown in figure 2, a heat exchange tube adopts a U-shaped tube, and the shell side is of a double-shell structure. The sealing structure of the tube box is shown in figure 1, and the sealing structure consists of a trapezoidal sealing gasket, a fixing ring and a plane sealing gasket; the plane sealing gasket is arranged in a sealing structure between the tube box flange and the tube plate; a trapezoidal sealing gasket and a fixing ring are sequentially arranged between the sealing boss of the barrel flange and the tube plate, and the fixing ring and the contact surface between the barrel flange and the trapezoidal sealing gasket are matched with each other by the trapezoidal inclination; after the bolts are simultaneously connected with the upper parts of the pipe box flange and the cylinder body flange, the plane sealing gasket and the trapezoidal sealing gasket are fastened by nuts. This structure has the following disadvantages: 1. two sealing gaskets are needed, so that the leakage points are more and the reliability is poor; 2. the gasket structural style is different, and required sealing load difference is great, and in order to realize sealed, the fastener need be according to the design of great side seal load, easily causes opposite side gasket overload conquassation, leads to leaking.
SUMMERY OF THE UTILITY MODEL
The utility model provides a but hairpin formula heat exchanger pipe case seal structure of loosing core adopts single seal structure to realize that the tube journey is synchronous sealed, when guaranteeing that the tube bank can loose core, has solved that the tradition can take out that the tube bank hairpin formula heat exchanger multiple spot sealing reliability is poor, the gasket load difference exists conquassation risk scheduling problem greatly.
The utility model provides a technical scheme that above-mentioned problem adopted is:
a core-pulling hairpin type heat exchanger tube box sealing structure comprises a tube box flange, a shell pass special-shaped flange and a tube plate; a positioning ring is arranged between the outer edge of the tube plate and the inner wall of the shell pass special-shaped flange for axial positioning, so that the sealing surfaces of the tube plate and the shell pass special-shaped flange are on the same plane; and sealing grooves are processed at the adjacent positions of the outer end face of the tube plate and the end face of the shell pass special-shaped flange, and metal ring gaskets are arranged in the sealing grooves on the end faces of the sealing grooves and the tube box flange, so that the tube and the shell pass are synchronously sealed by the metal ring gaskets between the shell pass special-shaped flange and the tube plate.
The utility model has the advantages that:
the utility model discloses a single seal structure realizes that heat exchanger shell side is synchronous sealed, and satisfies the tube bank needs of loosing core, and is sealed reliable. Can meet the requirements of replacing and cleaning the tube bundle of the hairpin heat exchanger. Compared with the prior art, the utility model discloses the medium pressure that can bear is higher, and the pipe box side and casing side sealing reliability are better. Furthermore, the utility model discloses an octagon pad is sealed, changes in standardized design.
Drawings
Fig. 1 is a schematic view of a sealing structure of a conventional hairpin heat exchanger;
fig. 2 is a schematic view of a core-pulling structure of a hairpin heat exchanger tube bundle of the present invention;
FIG. 3 is a schematic exploded view of the present invention;
fig. 4 is a schematic structural diagram of the present invention.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
Referring to fig. 2, 3 and 4, the hairpin type heat exchanger tube box sealing structure capable of drawing the tube bundle comprises a tube box flange 1, a metal ring gasket 2, a positioning ring 3, a shell side special-shaped flange 4 and a tube plate 5. A positioning ring 3 is arranged between the outer edge of the tube plate 5 and the inner wall of the shell pass special-shaped flange 4 for axial positioning, so that the sealing surfaces of the tube plate 5 and the shell pass special-shaped flange 4 are on the same plane; and sealing trapezoidal grooves are processed at the adjacent positions of the outer end surface of the tube plate 5 and the end surface of the shell pass special-shaped flange 4, and metal ring gaskets 2 are arranged in the sealing trapezoidal grooves and the sealing trapezoidal grooves on the end surface of the tube box flange 1, so that the tube and shell pass synchronous sealing between the shell pass special-shaped flange 4 and the tube plate 5 is realized through the metal ring gaskets 2. The pipe box flange 1 and the shell pass special-shaped flange 4 are connected through bolts.
The metal ring pad 2 is an octagonal pad or an oval pad. The gasket is contacted with the shell side special-shaped flange 4 and the inner side and the outer side (mainly the outer side) of the trapezoidal groove on the pipe box flange 1, and forms sealing through compression, and the radial self-tightening sealing effect is achieved.
The positioning ring is a two-piece or four-piece ring for easy installation.
Claims (3)
1. A core-pulling hairpin type heat exchanger tube box sealing structure comprises a tube box flange, a shell pass special-shaped flange and a tube plate; the method is characterized in that: a positioning ring (3) is arranged between the outer edge of the tube plate (5) and the inner wall of the shell side special-shaped flange (4) for axial positioning, so that the tube plate (5) and the sealing surface of the shell side special-shaped flange (4) are on the same plane; and sealing grooves are processed at the adjacent positions of the outer end face of the tube plate (5) and the end face of the shell pass special-shaped flange (4), and metal ring gaskets (2) are arranged in the sealing grooves on the end faces of the sealing grooves and the tube box flange (1), so that the tube and shell pass synchronous sealing between the shell pass special-shaped flange (4) and the tube plate (5) is realized through the metal ring gaskets (2).
2. The core-pulling hairpin type heat exchanger tube box sealing structure of claim 1, characterized in that: the metal ring pad (2) is an octagonal pad or an oval pad.
3. The core-pulling hairpin type heat exchanger tube box sealing structure of claim 1, characterized in that: the positioning ring (3) is of a split structure with two or more lobes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920652441.8U CN210220808U (en) | 2019-05-08 | 2019-05-08 | Core-pulling hairpin type heat exchanger tube box sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920652441.8U CN210220808U (en) | 2019-05-08 | 2019-05-08 | Core-pulling hairpin type heat exchanger tube box sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210220808U true CN210220808U (en) | 2020-03-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920652441.8U Active CN210220808U (en) | 2019-05-08 | 2019-05-08 | Core-pulling hairpin type heat exchanger tube box sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210220808U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112033188A (en) * | 2020-09-09 | 2020-12-04 | 南通昭和机械有限公司 | Tubular heat exchanger |
-
2019
- 2019-05-08 CN CN201920652441.8U patent/CN210220808U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112033188A (en) * | 2020-09-09 | 2020-12-04 | 南通昭和机械有限公司 | Tubular heat exchanger |
| CN112033188B (en) * | 2020-09-09 | 2022-06-28 | 南通昭和机械有限公司 | Tubular heat exchanger |
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