CN210570127U - Fixed tube-sheet heat exchanger - Google Patents
Fixed tube-sheet heat exchanger Download PDFInfo
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- CN210570127U CN210570127U CN201920963907.6U CN201920963907U CN210570127U CN 210570127 U CN210570127 U CN 210570127U CN 201920963907 U CN201920963907 U CN 201920963907U CN 210570127 U CN210570127 U CN 210570127U
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Abstract
The utility model discloses a fixed tube sheet heat exchanger. The existing heat exchanger has higher manufacturing cost and unsatisfactory sealing effect. The utility model discloses a pipe case, casing, tube sheet, heat exchange tube. The tube plate is made of metal materials, the heat exchange tube is made of non-metal polymer materials, and the tube plate is connected with the heat exchange tube through a plate tube connecting sealing piece. The two ends of the plate-tube connecting sealing element cylindrical main body are respectively provided with a tube plate inner side wall fixing ring and a tube plate outer side wall fixing ring along the circumference of the outer wall, and the tube plate outer side wall fixing ring is provided with a metal wedge. Chamfers are respectively arranged at two ends of the sealing element main body along the inner wall opening edges, a tube plate sealing ring is arranged on the circumference of the outer wall of the sealing element main body, and a heat exchange tube sealing ring is arranged on the circumference of the inner wall. The utility model discloses avoided heat exchange tube and tube sheet direct contact, prevented to destroy the structural integrity of nonmetal heat exchange tube because of the vibration, realized the active connection between the nonmetal of opposite sex, the heat exchange tube installation and the dismantlement of being convenient for, the maintenance of being convenient for.
Description
Technical Field
The utility model belongs to the technical field of machinery, a heat exchanger is related to, specifically a fixed tube sheet heat exchanger.
Background
Generally, a fixed tube-plate heat exchanger includes a heat exchange tube and tube plates, the tube plates are provided with heat exchange tube mounting holes, and two ends of the heat exchange tube are fixedly connected to the two tube plates respectively. One surface of the tube plate is fixed with the tube box, and the other surface of the tube plate is fixed with the shell. The tube boxes at two ends of the heat exchanger and the inner wall of the heat exchange tube form a fluid flow area, the shell and the outer wall of the heat exchange tube form another fluid flow area, and heat exchange of the two fluid flow areas is realized through the tube wall of the heat exchange tube. In the process, the heat exchange tube is used as a heat exchange element, and the tube plate plays a role in fixing the heat exchange tube. In use, the two fluid flow regions are secured against communication, i.e. the junction of the heat exchange tube and the tube sheet is secured against effective sealing.
At present, the connection method between the metal pipe and the pipe plate mainly comprises an expansion joint method, a welding method and an expansion joint method. The connecting method of the non-metal pipe and the pipe plate mainly adopts a sealant connecting method (the heat exchange pipe is inserted into a heat exchange pipe mounting hole and sealed by sealant), an integral forming method (the heat exchange pipe and the pipe plate are integrally formed) and a high-elasticity rubber connecting method. The nonmetal pipes are connected by using a sealant, so that the temperature difference stress at the joint is large and the maintenance is inconvenient; the integral molding method is troublesome to manufacture and difficult to maintain; the high elastic connection method has lower bearing capacity.
Disclosure of Invention
The utility model aims at providing a fixed tube sheet heat exchanger, especially fixed wherein connection and sealed structure between non-metallic material's heat exchange tube and metallic material's the tube sheet to the not enough of prior art.
The utility model discloses a pipe case, casing, tube sheet, heat exchange tube. The two hemispherical tube boxes are arranged at two ends of the cylindrical shell, the tube boxes and the shell are separated by tube plates, heat exchange tube mounting holes are formed in the tube plates, and two ends of each heat exchange tube are respectively inserted into the heat exchange tube mounting holes of the two tube plates and are fixedly connected with the two tube plates; one of the channel boxes is provided with a channel box liquid inlet, and the other channel box is provided with a channel box liquid outlet; the shell is provided with a shell liquid inlet and a shell liquid outlet.
The tube plate is made of metal materials, the heat exchange tube is made of non-metal high polymer materials, and the tube plate is connected with the heat exchange tube through a plate tube connecting sealing piece.
The plate pipe connecting sealing piece comprises a cylindrical sealing piece main body, and two ends of the sealing piece main body are open; the tube plate inner side wall fixing rings and the tube plate outer side wall fixing rings are arranged at two ends of the sealing element main body along the circumference of the outer wall respectively, and the sealing element main body, the tube plate inner side wall fixing rings and the tube plate outer side wall fixing rings are integrally formed; the two ends of the sealing element main body are respectively provided with chamfers along the inner wall opening edges, the chamfers facing the inner side wall of the tube plate form a circle of heat exchange tube guiding slope, and the chamfers facing the outer side wall of the tube plate form a circle of heat exchange tube positioning slope.
The sealing element is characterized in that a tube plate sealing ring is arranged on the circumference of the outer wall of the sealing element main body, and a heat exchange tube sealing ring is arranged on the circumference of the inner wall.
The tube plate outer side wall fixing ring is internally provided with a metal wedge piece which is in a circular ring shape and is in a sheet shape, the metal wedge piece is embedded into the tube plate outer side wall fixing ring, and the metal wedge piece, the sealing element main body and the tube plate outer side wall fixing ring are concentrically arranged.
Furthermore, the head of the heat exchange tube is expanded outwards to form an expanded opening, and the expanded opening is clamped on the positioning slope of the heat exchange tube after the head of the heat exchange tube extends out of the plate tube to be connected with the sealing element.
Furthermore, the tube plate sealing ring and the sealing element main body are integrally formed, namely, a bulge is arranged on the outer wall of the sealing element main body, or the tube plate sealing ring is a sealing ring arranged on the outer wall of the sealing element main body. The heat exchange tube sealing ring and the sealing element main body are integrally formed, namely, a bulge is arranged on the inner wall of the sealing element main body, or the heat exchange tube sealing ring is a sealing ring arranged on the outer wall of the sealing element main body.
Further, the metal wedge comprises a wedge body, the wedge body is a circular metal sheet, and a plurality of long round holes are uniformly formed in the same circumference on the plane of the wedge body.
The utility model discloses a fixed tube sheet heat exchanger has avoided heat exchange tube and tube sheet direct contact, prevents to destroy the structural integrity of nonmetal heat exchange tube because of the vibration. The structure has good pressure resistance, realizes active connection between dissimilar non-metals, is convenient for installation and disassembly of the heat exchange tube, and is convenient for maintenance.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic structural view of the middle plate pipe connection sealing member of the present invention;
fig. 3 is a schematic structural view of the metal wedge in fig. 2.
Detailed Description
As shown in fig. 1, a fixed tube-plate heat exchanger includes a tube box 1, a shell 2, a tube plate 3, and a heat exchange tube 4. The two hemispherical tube boxes 1 are arranged at two ends of a cylindrical shell 2, the tube boxes 1 and the shell 2 are separated by tube plates 3, heat exchange tube mounting holes are formed in the tube plates 3, and two ends of each heat exchange tube 4 are respectively inserted into the heat exchange tube mounting holes of the two tube plates 3 and fixedly connected with the two tube plates 3. One pipe box 1 is provided with a pipe box liquid inlet 1-1, and the other pipe box 1 is provided with a pipe box liquid outlet 1-2; the shell 2 is provided with a shell liquid inlet 2-1 and a shell liquid outlet 2-2. The tube box 1 and the inner wall of the heat exchange tube 4 at two ends of the heat exchanger form a fluid flow area (the fluid flow direction is shown by an arrow in figure 1), the shell 2 and the outer wall of the heat exchange tube 4 form another fluid flow area (the fluid flow direction is shown by an arrow in figure 1), heat exchange of the two fluid flow areas is realized through the tube wall of the heat exchange tube 4, and the tube plate 3 plays a role of fixing the heat exchange tube 4.
The tube plate 3 is made of metal materials, the heat exchange tube 4 is made of non-metal high polymer materials, the head of the heat exchange tube 4 is expanded outwards to form an expanding opening, and the tube plate 3 is connected with the heat exchange tube 4 through a plate tube connecting sealing element.
As shown in fig. 2, the plate pipe joint seal includes a cylindrical seal body 5, and both ends of the seal body 5 are open. The both ends of sealing member main part 5 are equipped with the solid fixed ring of tube sheet inside wall 6 and the solid fixed ring of tube sheet lateral wall 7 respectively along the outer wall circumference, and the both ends of sealing member main part 5 are opened the chamfer respectively along inner wall mouth edge, and the chamfer towards the tube sheet inside wall forms round heat exchange tube direction slope 8, and the chamfer towards the tube sheet lateral wall forms round heat exchange tube location slope 9. The sealing element main body 5, the tube plate inner side wall fixing ring 6 and the tube plate outer side wall fixing ring 7 are integrally formed.
The circumference of the outer wall of the sealing element main body 5 is provided with a tube plate sealing ring 10, and the tube plate sealing ring 10 can be integrally formed with the sealing element main body 5, namely, a bulge is arranged on the outer wall of the sealing element main body, and can also be a sealing ring independently arranged on the outer wall of the sealing element main body.
The circumference of the inner wall of the sealing element main body 5 is provided with a heat exchange tube sealing ring 11, the heat exchange tube sealing ring 11 can be integrally formed with the sealing element main body 5, namely, a bulge is arranged on the inner wall of the sealing element main body, and the sealing ring can also be a sealing ring independently arranged on the inner wall of the sealing element main body.
The fixing ring 7 on the outer side wall of the tube plate is provided with a metal wedge 12. The metal wedge piece 12 is in a circular ring shape and is embedded into the fixing ring 7 on the outer side wall of the tube plate, and the sealing element main body 5, the fixing ring 7 on the outer side wall of the tube plate and the metal wedge piece 12 are arranged concentrically. The metal wedge piece is arranged, so that the strength of the fixing ring 7 on the outer side of the tube plate is improved, the reliability of the fixing ring on the outer side of the tube plate is improved, the pressure on the outer side of the tube plate is prevented, and the sealing piece main body is stretched towards the inner side of the tube plate.
As shown in FIG. 3, the metal wedge 12 comprises a wedge body 12-1, the wedge body 12-1 is a circular metal sheet, and a plurality of oblong holes 12-2 are uniformly formed in the same circumference on the plane of the wedge body 12-1. The oblong hole 12-2 is used to better integrate the metal wedge 12 and the seal during the manufacturing process, preventing the connection from being loose due to the two different materials after manufacturing.
In operation, the plate-tube connecting sealing element is inserted into a heat exchange tube mounting hole formed in the tube plate 3 from the outer side of the tube plate 3, and the tube plate outer side wall fixing ring 7 and the tube plate inner side wall fixing ring 6 are located on two sides of the tube plate 3 to clamp the tube plate 3, so that the fixing effect between the plate-tube connecting sealing element and the tube plate is achieved. The heat exchange tube 4 made of non-metal materials is inserted into the plate-tube connecting sealing piece from the inner side of the tube plate 3, and the arrangement of the heat exchange tube guide slope 8 can facilitate installation. After the flaring at the head of the heat exchange tube 4 extends out of the plate tube connecting sealing element, the flaring is clamped on the heat exchange tube positioning slope 9, so that the tube plate 3 is connected with the plate tube connecting sealing element in a sealing manner.
The tube plate sealing ring 10 is extruded by the inner wall of the heat exchange tube mounting hole to realize the sealing between the inner wall of the heat exchange tube mounting hole and the plate tube connecting sealing element; the heat exchange tube sealing ring 11 is extruded by the outer wall of the heat exchange tube 4, so that the sealing between the outer wall of the heat exchange tube and the plate tube connecting sealing piece is realized. In this way, a sealed connection of the tube plate 3 to the heat exchange tubes 4 is achieved.
In the working process, the heat exchange tube can vibrate due to the flowing of two fluids, and the plate tube connecting sealing piece is made of soft silica gel materials, so that the shock absorption and the supporting effect can be realized under the working condition. Meanwhile, the plate tube connecting sealing piece is used as a connecting element, so that the heat exchange tube 4 is prevented from being in direct contact with the tube plate 3, and the structural integrity of the nonmetal heat exchange tube is prevented from being damaged due to vibration. The structure has good pressure resistance, realizes active connection between dissimilar non-metals, is convenient for installation and disassembly of the heat exchange tube, and is convenient for maintenance.
Claims (7)
1. A fixed tube-plate heat exchanger comprises a tube box (1), a shell (2), a tube plate (3) and a heat exchange tube (4); the two hemispherical tube boxes (1) are arranged at two ends of a cylindrical shell (2), the tube boxes (1) and the shell (2) are separated by tube plates (3), heat exchange tube mounting holes are formed in the tube plates (3), and two ends of a heat exchange tube (4) are respectively inserted into the heat exchange tube mounting holes of the two tube plates (3) and fixedly connected with the two tube plates (3); one tube box (1) is provided with a tube box liquid inlet (1-1), and the other tube box (1) is provided with a tube box liquid outlet (1-2); a shell liquid inlet (2-1) and a shell liquid outlet (2-2) are formed in the shell (2); the method is characterized in that:
the tube plate (3) is made of metal materials, the heat exchange tube (4) is made of non-metal high polymer materials, and the tube plate (3) is connected with the heat exchange tube (4) through a plate tube connecting sealing piece;
the plate pipe connecting sealing piece comprises a cylindrical sealing piece main body (5), and two ends of the sealing piece main body (5) are open; the two ends of the sealing element main body (5) are respectively provided with a tube plate inner side wall fixing ring (6) and a tube plate outer side wall fixing ring (7) along the outer wall circumference, and the sealing element main body (5), the tube plate inner side wall fixing ring (6) and the tube plate outer side wall fixing ring (7) are integrally formed; chamfers are respectively arranged at two ends of the sealing element main body (5) along the inner wall opening edge, the chamfers facing the inner side wall of the tube plate form a circle of heat exchange tube guiding slope (8), and the chamfers facing the outer side wall of the tube plate form a circle of heat exchange tube positioning slope (9);
a tube plate sealing ring (10) is arranged on the circumference of the outer wall of the sealing element main body (5), and a heat exchange tube sealing ring (11) is arranged on the circumference of the inner wall;
the tube plate outer side wall fixing ring (7) is internally provided with a metal wedge piece (12), the metal wedge piece (12) is in a circular ring shape and is in a sheet shape and embedded into the tube plate outer side wall fixing ring (7), and the metal wedge piece (12), the sealing piece main body (5) and the tube plate outer side wall fixing ring (7) are concentrically arranged.
2. A fixed tube and plate heat exchanger according to claim 1 wherein: the head of the heat exchange tube (4) is expanded outwards to form an expanding opening, and the expanding opening is clamped on the heat exchange tube positioning slope (9) after the head of the heat exchange tube (4) extends out of the plate tube to be connected with the sealing element.
3. A fixed tube and plate heat exchanger according to claim 1 wherein: the tube plate sealing ring (10) and the sealing element main body (5) are integrally formed, namely, a bulge is arranged on the outer wall of the sealing element main body.
4. A fixed tube and plate heat exchanger according to claim 1 wherein: the tube plate sealing ring (10) is a sealing ring arranged on the outer wall of the sealing element main body.
5. A fixed tube and plate heat exchanger according to claim 1 wherein: the heat exchange tube sealing ring (11) and the sealing element main body (5) are integrally formed, namely, a bulge is arranged on the inner wall of the sealing element main body.
6. A fixed tube and plate heat exchanger according to claim 1 wherein: the heat exchange tube sealing ring (11) is a sealing ring arranged on the outer wall of the sealing element main body.
7. A fixed tube and plate heat exchanger according to claim 1 wherein: the metal wedge (12) comprises a wedge body (12-1), the wedge body (12-1) is a circular metal sheet, and a plurality of long round holes (12-2) are uniformly formed in the same circumference of the plane of the wedge body (12-1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920963907.6U CN210570127U (en) | 2019-06-25 | 2019-06-25 | Fixed tube-sheet heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920963907.6U CN210570127U (en) | 2019-06-25 | 2019-06-25 | Fixed tube-sheet heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210570127U true CN210570127U (en) | 2020-05-19 |
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ID=70639708
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920963907.6U Active CN210570127U (en) | 2019-06-25 | 2019-06-25 | Fixed tube-sheet heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210570127U (en) |
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2019
- 2019-06-25 CN CN201920963907.6U patent/CN210570127U/en active Active
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