CN210346413U - Double-pipe heat exchanger and U-shaped double-pipe heat exchanger - Google Patents
Double-pipe heat exchanger and U-shaped double-pipe heat exchanger Download PDFInfo
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- CN210346413U CN210346413U CN201920665245.4U CN201920665245U CN210346413U CN 210346413 U CN210346413 U CN 210346413U CN 201920665245 U CN201920665245 U CN 201920665245U CN 210346413 U CN210346413 U CN 210346413U
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Abstract
The utility model relates to a double pipe heat exchanger and U type double pipe heat exchanger. The problem of the sealed effect between double pipe heat exchanger tube sheet and the casing relatively poor is solved. A U-shaped sleeve type heat exchanger comprises a tube box, a shell and a tube bundle, wherein the tube bundle comprises a tube plate and a heat exchange tube; one end of the shell is connected with a reverse flange, a pipe box flange is arranged on the outer ring of the pipe box, and the pipe box flange, the reverse flange and the pipe plate are connected through bolts; and a sealing ring is arranged between the pipe box flange and the reverse flange, and a sealing ring is also arranged between the reverse flange and the pipe plate. The larger the shell side pressure of the sealing structure is, the better the sealing effect between the tube plate and the reverse flange is, and the sealing structure has certain self-sealing property. The heat exchange tubes and the tube plates form tube bundles which pass through the shell and can be freely detached, cleaned or replaced.
Description
Technical Field
The utility model relates to a double pipe heat exchanger and U type double pipe heat exchanger.
Background
The double pipe heat exchanger has the advantages of simple structure, standard components, freely increased and decreased components, increased and decreased heat transfer area, high heat transfer efficiency, convenience in installation and the like, and is widely applied to various industries. In the double pipe heat exchanger with the tube plate, the connection form of the tube plate and the shell is divided into an undetachable type and a detachable type, for example, the connection of the tube plate and the shell in the fixed tube plate type heat exchanger. The latter is, for example, the connection of the tube sheet of heat exchangers of the clamping type, the packing box type and the sliding tube sheet type to the shell. The shell and the tube plate are directly welded together or the tube plate cannot penetrate through the shell; the detachable connection is realized by indirectly connecting the flange with the shell or sealing the tube plate and the shell by a sleeve pipe pressing and filling way. The detachable connection between the tube plate and the shell of the existing double-pipe heat exchanger has relatively poor sealing effect and complex structure, and particularly, leakage is inevitable when the shell side pressure is high.
Disclosure of Invention
The utility model provides a relatively poor problem of sealed effect between double pipe heat exchanger tube sheet and the casing provides a double pipe heat exchanger and a U type sleeve heat exchanger, through improving seal structure, reaches to improve sealed effect and removable purpose between tube sheet and the casing.
The utility model discloses an adopt following technical scheme to realize: a double-pipe heat exchanger comprises a pipe box, a shell and a pipe bundle, wherein the pipe bundle comprises a pipe plate and a heat exchange pipe; one end of the shell is connected with a reverse flange, one end of the tube box is provided with a tube box flange, and the tube box flange, the reverse flange and the tube plate are connected through bolts; and a sealing ring is arranged between the pipe box flange and the reverse flange, and a sealing ring is also arranged between the reverse flange and the pipe plate. The larger the shell side pressure of the sealing structure is, the better the sealing effect between the tube plate and the reverse flange is, and the sealing structure has certain self-sealing property.
In order to realize the detachability of the tube bundle, a complex movable sleeve structure is often arranged at the tube plate to compress a stuffing box between the tube plate and a shell or a rubber ring is adopted for sealing, the stuffing box type sealing has higher requirement on a medium and is not suitable for the occasions of easy volatilization, flammability, explosion, toxicity and the like, and the rubber ring sealing has certain limitation on the temperature and the pressure of the medium. When meeting high difference in temperature, explosive, poisonous operating mode, current equipment often can shorten equipment life because of seal structure's defect, causes manufacturing cost's waste.
Therefore, the U-shaped sleeve type heat exchanger comprises a tube box, a shell and a tube bundle, wherein the tube bundle comprises a tube plate and a U-shaped heat exchange tube; the shell is two independent sub-shells, one end of each sub-shell is fixed with one side end face of the end plate, the other side end face of the end plate is connected with the head cover, the end plate is provided with heat exchange tube through holes corresponding to the positions of the two sub-shells, two ends of the U-shaped heat exchange tube are connected with tube plates respectively positioned at the other ends of the two sub-shells to form a tube bundle, the elbow part of the tube bundle is positioned in the head cover, two straight tube parts penetrate through the heat exchange tube through holes on the end plate and are respectively positioned in the two sub-shells, one end of each sub-shell is provided with a tube box, the two sub-shells are respectively provided with a shell pass inlet and; the outer ring of the pipe box is provided with a pipe box flange, the other end of the sub-shell is connected with a reverse flange, the pipe box flange, the reverse flange and the pipe plate are connected through bolts, a sealing ring is arranged between the pipe box flange and the reverse flange, and a sealing ring is also arranged between the reverse flange and the pipe plate.
This U type shell and tube heat exchanger design selects for use the detachability and the self sealss that rational structure realized equipment, and shell side pressure is big more, and the sealed effect between tube sheet and the reverse flange is better. Adopt and divide shell structure, can many sets of series connection use, the connection structure of tube sheet and reverse flange, application scope is wider, realizes the whole detachability of tube bank simultaneously, conveniently washs and changes the tube bank, compact structure, safe and reliable can satisfy multiple complicated technological requirement.
Drawings
Fig. 1 is a schematic structural diagram of a U-shaped sleeve heat exchanger of the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1;
FIG. 3 is a schematic view of the tube bundle structure of the U-shaped sleeve heat exchanger of the present invention;
FIG. 4 is a schematic diagram of the tube sheet structure of the U-shaped sleeve heat exchanger of the present invention;
FIG. 5 is a top view of FIG. 4;
fig. 6 is a schematic view of a reverse flange structure of the U-shaped sleeve heat exchanger of the present invention;
fig. 7 is a schematic view of the end plate structure of the U-shaped sleeve heat exchanger of the present invention.
In the figure: 1-tube box, 2-reverse flange, 3-shell, 4-tube bundle, 5-end plate, 6-end cover, 7-tube plate, 8-heat exchange tube, 81-U-shaped heat exchanger, 9-baffle plate, 10-sealing gasket, 11-tube box flange, 12-thick-wall tube and 13-convex ring.
Detailed Description
A double-pipe heat exchanger comprises a pipe box 1, a shell 3 and a pipe bundle 4, wherein the pipe bundle 4 comprises a pipe plate 7 and a heat exchange pipe 8; one end of the shell 3 is connected with a reverse flange 2, one end of the tube box 1 is provided with a tube box flange 11, and the tube box flange 11, the reverse flange 2 and the tube plate 7 are connected by bolts (specifically, the tube plate 7 is provided with screw holes, and the bolts penetrate through the tube box flange 11 and the reverse flange 2 and are screwed into the screw holes on the tube plate 7); a sealing ring is arranged between the pipe box flange 11 and the reverse flange 2, and a sealing ring is also arranged between the reverse flange 2 and the pipe plate 7. The reverse flange 2 is provided with a sealing groove, the sealing ring is arranged in the sealing groove, the pipe box flange 11 and the pipe plate 7 are provided with convex rings 13 matched with the sealing groove, and the sealing ring is pressed at the bottom of the sealing groove through the convex rings 13. The larger the shell side pressure of the sealing structure is, the better the sealing effect between the tube plate and the reverse flange is, and the sealing structure has certain self-sealing property. This seal structure adopts bolted connection, the sealing washer is sealed 10, and sealed 10 can the various semimetals of free choice of sealed pad, metal and nonmetal pad, not only convenient the dismantlement, is applicable to various complicated medium operating mode places simultaneously, has compensatied the sealed not enough of traditional equipment letter-filling formula and rubber pad, has eliminated the restriction of traditional equipment to the medium characteristic. A sealing gasket 10 is arranged between the pipe box flange 11 and the reverse flange 2, and two sealing gaskets 10 are arranged between the reverse flange 2 and the pipe plate 7.
A U-shaped sleeve type heat exchanger comprises a tube box 1, a shell 3 and a tube bundle 4, wherein the tube bundle 4 comprises a tube plate 7 and a U-shaped heat exchange tube 81; the shell 3 is two independent sub-shells, one end of each sub-shell is fixed with one side end face of the end plate 5, the other side end face of the end plate 5 is connected with the head cover 6, heat exchange tube through holes corresponding to the positions of the two sub-shells are formed in the end plate 5, two ends of the U-shaped heat exchange tube 81 are connected with the tube plates 7 respectively located at the other ends of the two sub-shells to form a tube bundle, an elbow part of the tube bundle is located in the head cover 6, two straight tube parts penetrate through the heat exchange tube through holes in the end plate 5 and are respectively located in the two sub-shells, one end of each sub-shell is provided with a tube box 1, the two sub-shells are respectively provided with a shell side; the outer ring of the pipe box 1 is provided with a pipe box flange 11, the other end of the sub-shell is connected with a reverse flange 2, the pipe box flange 11, the reverse flange 2 and the pipe plate 7 are connected through bolts (specifically, the pipe plate 7 is provided with screw holes, and the bolts penetrate through the pipe box flange 11 and the reverse flange 2 and are screwed into the screw holes on the pipe plate 7), a sealing ring is arranged between the pipe box flange 11 and the reverse flange 2, and a sealing ring is also arranged between the reverse flange 2 and the pipe plate 7. The reverse flange 2 is provided with a sealing groove, the sealing ring is arranged in the sealing groove, the pipe box flange 11 and the pipe plate 7 are provided with convex rings 13 matched with the sealing groove, and the sealing ring is pressed at the bottom of the sealing groove through the convex rings 13. The sealing effect between the tube plate and the reverse flange is better when the shell side pressure of the sealing structure is larger, and the sealing structure has certain self-sealing property. This seal structure adopts bolted connection, the sealing washer is sealed 10, and sealed 10 can the various semimetals of free choice of sealed pad, metal and nonmetal pad, not only convenient the dismantlement, is applicable to various complicated medium operating mode places simultaneously, has compensatied the sealed not enough of traditional equipment letter-filling formula and rubber pad, has eliminated the restriction of traditional equipment to the medium characteristic. A sealing gasket 10 is arranged between the pipe box flange 11 and the reverse flange 2, and two sealing gaskets 10 are arranged between the reverse flange 2 and the pipe plate 7. The sub-shell is connected with the end plate 5 through the thick-wall pipe 12, and the local stress caused by wall thickness fusion is reduced through transition of the thick-wall pipe 12. The end plate 5 and the head cover 6 are connected through flanges, and the head cover 6 and the end plate 5 are connected and sealed through bolts. The tube bundle 4 is provided with a baffle plate 9, and the baffle plate 9 plays a role in supporting the tube bundle and changing the flow direction of a shell pass medium, so that the heat exchange efficiency can be improved.
Tube bank 4 comprises U type heat exchange tube 81 and tube sheet 7, can pass inside casing 3 as the part, and back end lid 6 is bolted connection, and this structure meets shell side condensation or when tube bank 4 damages, can dismantle skull 6 and take out tube bank 4 and wash or change. And the tube bundle is of a U-shaped structure, can freely stretch and retract, and can eliminate temperature difference stress generated by overlarge temperature difference between the tube and the shell.
Claims (10)
1. A double-pipe heat exchanger comprises a pipe box (1), a shell (3) and a pipe bundle (4), wherein the pipe bundle (4) comprises a pipe plate (7) and a heat exchange pipe (8); the novel tube box is characterized in that one end of the shell (3) is connected with a reverse flange (2), one end of the tube box (1) is provided with a tube box flange (11), and the tube box flange (11), the reverse flange (2) and the tube plate (7) are connected through bolts; a sealing ring is arranged between the pipe box flange (11) and the reverse flange (2), and a sealing ring is also arranged between the reverse flange (2) and the pipe plate (7).
2. A double pipe heat exchanger according to claim 1, wherein the tube sheet (7) is provided with screw holes, and bolts are screwed into the screw holes of the tube sheet (7) through the tube box flange (11) and the counter flange (2).
3. A double pipe heat exchanger according to claim 1, wherein the counter flange (2) is formed with a sealing groove, the sealing ring is disposed in the sealing groove, the pipe box flange (11) and the pipe plate (7) are formed with a protruding ring (13) engaged with the sealing groove, and the sealing ring is pressed against the bottom of the sealing groove by the protruding ring (13).
4. A double pipe heat exchanger according to claim 3, wherein the packing is a packing (10), and the packing (10) is selected from a semi-metallic or non-metallic packing.
5. A U-shaped sleeve type heat exchanger comprises a tube box (1), a shell (3) and a tube bundle (4), wherein the tube bundle (4) comprises a tube plate (7) and a U-shaped heat exchange tube (81); the shell (3) is two independent sub-shells, one end of each sub-shell is fixed with one side end face of the end plate (5), the other side end face of the end plate (5) is connected with the head cover (6), the end plate (5) is provided with heat exchange tube through holes corresponding to the positions of the two sub-shells, two ends of the U-shaped heat exchange tube (81) are connected with tube plates (7) respectively positioned at the other ends of the two sub-shells to form a tube bundle, an elbow part of the tube bundle is positioned in the head cover (6), two straight tube parts penetrate through the heat exchange tube through holes on the end plate (5) and are respectively positioned in the two sub-shells, one end of each sub-shell is provided with a tube box (1), the two sub-shells are respectively provided with a shell side inlet and a; the novel pipe box is characterized in that a pipe box flange (11) is arranged on the outer ring of the pipe box (1), the other end of the sub-shell is connected with a reverse flange (2), the pipe box flange (11), the reverse flange (2) and the pipe plate (7) are connected through bolts, a sealing ring is arranged between the pipe box flange (11) and the reverse flange (2), and a sealing ring is also arranged between the reverse flange (2) and the pipe plate (7).
6. A U-shaped shell and tube heat exchanger according to claim 5, characterized in that the tube plate (7) is provided with screw holes, and bolts are screwed into the screw holes in the tube plate (7) through the tube box flange (11) and the counter flange (2).
7. A U-shaped shell and tube heat exchanger according to claim 5, characterized in that the counter flange (2) is provided with a sealing groove, the sealing ring is arranged in the sealing groove, the tube box flange (11) and the tube plate (7) are provided with a convex ring (13) matched with the sealing groove, and the sealing ring is pressed at the bottom of the sealing groove through the convex ring (13).
8. A U-shaped shell and tube heat exchanger according to claim 7 characterized in that the sealing ring is a sealing gasket (10), and the sealing gasket (10) is selected from semi-metal or nonmetal gasket.
9. A U-shaped shell and tube heat exchanger according to claim 8, characterized in that the subshells are connected to the end plates (5) via thick-walled tubes (12).
10. A U-shaped shell and tube heat exchanger according to claim 9, characterized in that the end plate (5) and the head cover (6) are flange-connected and the head cover (6) and the end plate (5) are sealed by means of a bolt connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920665245.4U CN210346413U (en) | 2019-05-10 | 2019-05-10 | Double-pipe heat exchanger and U-shaped double-pipe heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920665245.4U CN210346413U (en) | 2019-05-10 | 2019-05-10 | Double-pipe heat exchanger and U-shaped double-pipe heat exchanger |
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| Publication Number | Publication Date |
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| CN210346413U true CN210346413U (en) | 2020-04-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920665245.4U Active CN210346413U (en) | 2019-05-10 | 2019-05-10 | Double-pipe heat exchanger and U-shaped double-pipe heat exchanger |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110017709A (en) * | 2019-05-10 | 2019-07-16 | 山西丰喜化工设备有限公司 | A kind of double pipe heat exchanger |
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2019
- 2019-05-10 CN CN201920665245.4U patent/CN210346413U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110017709A (en) * | 2019-05-10 | 2019-07-16 | 山西丰喜化工设备有限公司 | A kind of double pipe heat exchanger |
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