CN111288834B - Prefabricated joint type fluoroplastic heat exchange tube and tube plate connecting structure and installation method - Google Patents
Prefabricated joint type fluoroplastic heat exchange tube and tube plate connecting structure and installation method Download PDFInfo
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- CN111288834B CN111288834B CN202010284499.9A CN202010284499A CN111288834B CN 111288834 B CN111288834 B CN 111288834B CN 202010284499 A CN202010284499 A CN 202010284499A CN 111288834 B CN111288834 B CN 111288834B
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- tube
- heat exchange
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- exchange tube
- plate
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- 229920002313 fluoropolymer Polymers 0.000 title claims abstract description 47
- 238000009434 installation Methods 0.000 title claims abstract description 19
- 238000000034 method Methods 0.000 title abstract description 6
- 239000002184 metal Substances 0.000 claims abstract description 95
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims abstract description 41
- 239000004810 polytetrafluoroethylene Substances 0.000 claims abstract description 41
- -1 polytetrafluoroethylene Polymers 0.000 claims description 12
- 238000007789 sealing Methods 0.000 claims description 12
- 238000003466 welding Methods 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/02—Header boxes; End plates
- F28F9/04—Arrangements for sealing elements into header boxes or end plates
- F28F9/06—Arrangements for sealing elements into header boxes or end plates by dismountable joints
- F28F9/10—Arrangements for sealing elements into header boxes or end plates by dismountable joints by screw-type connections, e.g. gland
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Laminated Bodies (AREA)
Abstract
The invention discloses a prefabricated joint type fluoroplastic heat exchange tube and tube plate connecting structure and an installation method, wherein the structure comprises a metal tube plate, wherein a heat exchange tube installation hole is formed in the metal tube plate, threads are arranged on the inner wall of the heat exchange tube installation hole, and the heat exchange tube installation hole and the threads on the outer side of a metal support tube are screwed during installation; the upper surface and the lower surface of the metal tube plate are respectively covered with a layer of PTFE base plate, a heat exchange tube mounting hole on the metal tube plate penetrates through the upper PTFE base plate and the lower PTFE base plate, and a heat exchange tube is mounted in the heat exchange tube mounting hole; the heat exchange tube is a prefabricated joint type fluoroplastic heat exchange tube. The invention does not need PTFE welding, greatly saves labor cost, and adopts a metal tube expansion mode to fix the heat exchange tube supporting tube, so that the fixation is safer and firmer. The invention prefabricates the heat exchange tubes and the joints, can be produced in batch by using a tube expanding machine, only needs to penetrate the tubes for fixing during installation, has simple operation, ensures the product quality and saves labor.
Description
Technical Field
The invention relates to a fluoroplastic heat exchange tube and tube plate connecting structure and an installation method.
Background
The fixing mode of the traditional heat exchange tube and the tube plate is as follows: and (4) connecting the tetrafluoro pipe with a tetrafluoro base plate on the pipe plate by adopting tetrafluoro welding. The welding requirement is extremely high, the connecting surface is small, and the pipe is easy to fall off after long-term use. The fixing mode of the traditional heat exchange tube and the tube plate is as follows: the heat exchange tube and the tube plate are directly fixed by adopting a tube expansion mode. The heat exchange tube has the advantages that the groove needs to be formed in the mounting hole in the tube plate, machining precision is high, the thickness of the tube plate needs to be increased, the tube expansion is manually operated on the tube plate after the heat exchange tube is penetrated on the tube plate, operation difficulty is high, and quality is unstable.
Disclosure of Invention
The invention aims to provide a prefabricated joint type fluoroplastic heat exchange tube and tube plate connecting structure which is safe to fix and simple to operate and an installation method.
The technical solution of the invention is as follows:
the utility model provides a prefabricated joint formula fluoroplastics heat exchange tube and tube sheet connection structure, characterized by: the heat exchange tube comprises a metal tube plate, wherein a heat exchange tube mounting hole is formed in the metal tube plate, threads are arranged on the inner wall of the heat exchange tube mounting hole, and the heat exchange tube mounting hole and the threads on the outer side of a metal supporting tube are screwed during mounting; the upper surface and the lower surface of the metal tube plate are respectively covered with a layer of PTFE base plate, a heat exchange tube mounting hole on the metal tube plate penetrates through the upper PTFE base plate and the lower PTFE base plate, and a heat exchange tube is mounted in the heat exchange tube mounting hole;
the heat exchange tube is a prefabricated joint type fluoroplastic heat exchange tube and comprises a metal support tube, wherein threads are arranged on the outer side of the metal support tube, and an upper groove and a lower groove are formed in the inner wall of the metal support tube; a boss is formed on the upper edge of the metal supporting tube along the folded edge, and a sealing ring is arranged between the boss and the upper PTFE base plate;
the inner side of the metal supporting tube is provided with a tetrafluoro protection tube, the lower part of the tetrafluoro protection tube is longer than the metal supporting tube, and the upper edge of the tetrafluoro protection tube is tightly attached to a boss of the metal supporting tube;
the inner side of the polytetrafluoroethylene protection tube is provided with a fluoroplastic heat exchange tube, the upper edge of the fluoroplastic heat exchange tube is provided with a flanging which is tightly attached to the upper edge flanging of the polytetrafluoroethylene protection tube, and the bottom end of the fluoroplastic heat exchange tube is flanged for limiting and fixing the bottom;
the inner side of the fluoroplastic heat exchange tube is provided with a metal expansion tube, the upper edge of the fluoroplastic heat exchange tube and the upper edge of the tetrafluoro protection tube are wrapped by the flanging of the upper edge of the metal expansion tube, the lower edge of the metal expansion tube is shorter than the tetrafluoro protection tube and longer than the metal supporting tube, and the part longer than the metal supporting tube inclines inwards to ensure that the edge of the metal expansion tube does not touch the heat exchange tube;
a flat nut is screwed at the lower thread of the metal supporting tube, a plurality of symmetrical power-assisted holes are formed in the flat nut and used for screwing the nut during installation, and a sealing gasket is arranged between the flat nut and a lower polytetrafluoroethylene base plate on the metal tube plate;
when the prefabricated joint type fluoroplastic heat exchange tube is installed, the whole prefabricated joint type fluoroplastic heat exchange tube penetrates through the heat exchange tube installation hole, the flat nut is screwed towards the direction of the metal tube plate, and the prefabricated joint type fluoroplastic heat exchange tube is tightly sealed with the metal tube plate, the upper PTFE base plate, the lower PTFE base plate and the sealing washer.
A method for installing a connection structure of a prefabricated joint type fluoroplastic heat exchange tube and a tube plate is characterized by comprising the following steps: the connecting structure comprises a metal tube plate, a heat exchange tube mounting hole is formed in the metal tube plate, threads are arranged on the inner wall of the heat exchange tube mounting hole, and the connecting structure is screwed with the threads on the outer side of the metal supporting tube during mounting; the upper surface and the lower surface of the metal tube plate are respectively covered with a layer of PTFE base plate, a heat exchange tube mounting hole on the metal tube plate penetrates through the upper PTFE base plate and the lower PTFE base plate, and a heat exchange tube is mounted in the heat exchange tube mounting hole;
the heat exchange tube is a prefabricated joint type fluoroplastic heat exchange tube and comprises a metal support tube, wherein threads are arranged on the outer side of the metal support tube, and an upper groove and a lower groove are formed in the inner wall of the metal support tube; a boss is formed on the upper edge of the metal supporting tube along the folded edge, and a sealing ring is arranged between the boss and the upper PTFE base plate;
the inner side of the metal supporting tube is provided with a tetrafluoro protection tube, the lower part of the tetrafluoro protection tube is longer than the metal supporting tube, and the upper edge of the tetrafluoro protection tube is tightly attached to a boss of the metal supporting tube;
the inner side of the polytetrafluoroethylene protection tube is provided with a fluoroplastic heat exchange tube, the upper edge of the fluoroplastic heat exchange tube is provided with a flanging which is tightly attached to the upper edge flanging of the polytetrafluoroethylene protection tube, and the bottom end of the fluoroplastic heat exchange tube is flanged for limiting and fixing the bottom;
the inner side of the fluoroplastic heat exchange tube is provided with a metal expansion tube, the upper edge of the fluoroplastic heat exchange tube and the upper edge of the tetrafluoro protection tube are wrapped by the flanging of the upper edge of the metal expansion tube, the lower edge of the metal expansion tube is shorter than the tetrafluoro protection tube and longer than the metal supporting tube, and the part longer than the metal supporting tube inclines inwards to ensure that the edge of the metal expansion tube does not touch the heat exchange tube;
a flat nut is screwed at the lower thread of the metal supporting tube, a plurality of symmetrical power-assisted holes are formed in the flat nut and used for screwing the nut during installation, and a sealing gasket is arranged between the flat nut and a lower polytetrafluoroethylene base plate on the metal tube plate;
when the prefabricated joint type fluoroplastic heat exchange tube is installed, the whole prefabricated joint type fluoroplastic heat exchange tube penetrates through the heat exchange tube installation hole, the flat nut is screwed towards the direction of the metal tube plate, and the prefabricated joint type fluoroplastic heat exchange tube is tightly sealed with the metal tube plate, the upper PTFE base plate, the lower PTFE base plate and the sealing washer.
The invention does not need PTFE welding, greatly saves labor cost, and adopts a metal tube expansion mode to fix the heat exchange tube supporting tube, so that the fixation is safer and firmer. The invention prefabricates the heat exchange tubes and the joints, can be produced in batch by using a tube expanding machine, only needs to penetrate the tubes for fixing during installation, has simple operation, ensures the product quality and saves labor.
Drawings
The invention is further illustrated by the following figures and examples.
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Detailed Description
A prefabricated joint type fluoroplastic heat exchange tube and tube plate connecting structure comprises a metal tube plate 7, wherein a heat exchange tube mounting hole is formed in the metal tube plate, threads are arranged on the inner wall of the heat exchange tube mounting hole, and the prefabricated joint type fluoroplastic heat exchange tube and tube plate connecting structure are screwed with threads 1-1 on the outer side of a metal supporting tube during mounting; the upper surface and the lower surface of the metal tube plate are respectively covered with a layer of PTFE base plate 8 and a layer of PTFE base plate 9, a heat exchange tube mounting hole on the metal tube plate penetrates through the upper PTFE base plate and the lower PTFE base plate, and a heat exchange tube is arranged in the heat exchange tube mounting hole;
the heat exchange tube is a prefabricated joint type fluoroplastic heat exchange tube and comprises a metal support tube 1, wherein threads 1-1 are arranged on the outer side of the metal support tube, and upper grooves 1-2 and lower grooves 1-3 are formed in the inner wall of the metal support tube; a boss 1-4 is formed on the upper edge of the metal supporting tube along the folded edge, and a sealing ring 6 is arranged between the boss and the upper PTFE base plate;
the inner side of the metal supporting tube is provided with a tetrafluoro protection tube 2, the lower part of the tetrafluoro protection tube is longer than the metal supporting tube, and the upper edge of the tetrafluoro protection tube is tightly attached to a boss of the metal supporting tube along a flanging 2-1;
a fluoroplastic heat exchange tube 3 is arranged on the inner side of the polytetrafluoroethylene protection tube, a folded edge 3-1 is arranged on the upper edge of the fluoroplastic heat exchange tube and is tightly attached to a folded edge 2-1 on the upper edge of the polytetrafluoroethylene protection tube, and a folded edge 3-2 is arranged at the bottom end of the fluoroplastic heat exchange tube and is used for limiting and fixing the bottom;
the inner side of the fluoroplastic heat exchange tube is provided with a metal expansion tube 4, the upper edge of the fluoroplastic heat exchange tube and the upper edge of the tetrafluoro protection tube are wrapped by a metal expansion tube upper edge flanging 4-1, the lower edge of the metal expansion tube is shorter than the tetrafluoro protection tube and longer than the metal supporting tube, and the part longer than the metal supporting tube inclines inwards to ensure that the edge of the metal expansion tube does not touch the heat exchange tube;
a flat nut 5 is screwed at the lower thread of the metal supporting tube, a plurality of symmetrical boosting holes 5-1 are formed in the flat nut and used for screwing the nut during installation, and a sealing gasket 10 is arranged between the flat nut and a lower polytetrafluoroethylene base plate 9 on the metal tube plate;
when the prefabricated joint type fluoroplastic heat exchange tube is installed, the whole prefabricated joint type fluoroplastic heat exchange tube penetrates through a heat exchange tube installation hole, the flat nut is screwed towards the direction of the metal tube plate, and the prefabricated joint type fluoroplastic heat exchange tube is tightly sealed with the metal tube plate 7, the upper and lower PTFE base plates 8 and 9 and the sealing washer 10.
Claims (1)
1. The utility model provides a prefabricated joint formula fluoroplastics heat exchange tube and tube sheet connection structure, characterized by: the heat exchange tube comprises a metal tube plate, wherein a heat exchange tube mounting hole is formed in the metal tube plate, threads are arranged on the inner wall of the heat exchange tube mounting hole, and the heat exchange tube mounting hole and the threads on the outer side of a metal supporting tube are screwed during mounting; the upper surface and the lower surface of the metal tube plate are respectively covered with a layer of PTFE base plate, a heat exchange tube mounting hole on the metal tube plate penetrates through the upper PTFE base plate and the lower PTFE base plate, and a heat exchange tube is mounted in the heat exchange tube mounting hole;
the heat exchange tube is a prefabricated joint type fluoroplastic heat exchange tube and comprises a metal support tube, wherein threads are arranged on the outer side of the metal support tube, and an upper groove and a lower groove are formed in the inner wall of the metal support tube; a boss is formed on the upper edge of the metal supporting tube along the folded edge, and a sealing ring is arranged between the boss and the upper PTFE base plate;
the inner side of the metal supporting tube is provided with a tetrafluoro protection tube, the lower part of the tetrafluoro protection tube is longer than the metal supporting tube, and the upper edge of the tetrafluoro protection tube is tightly attached to a boss of the metal supporting tube;
the inner side of the polytetrafluoroethylene protection tube is provided with a fluoroplastic heat exchange tube, the upper edge of the fluoroplastic heat exchange tube is provided with a flanging which is tightly attached to the upper edge flanging of the polytetrafluoroethylene protection tube, and the bottom end of the fluoroplastic heat exchange tube is flanged for limiting and fixing the bottom;
the inner side of the fluoroplastic heat exchange tube is provided with a metal expansion tube, the upper edge of the fluoroplastic heat exchange tube and the upper edge of the tetrafluoro protection tube are wrapped by the flanging of the upper edge of the metal expansion tube, the lower edge of the metal expansion tube is shorter than the tetrafluoro protection tube and longer than the metal supporting tube, and the part longer than the metal supporting tube inclines inwards to ensure that the edge of the metal expansion tube does not touch the heat exchange tube;
a flat nut is screwed at the lower thread of the metal supporting tube, a plurality of symmetrical power-assisted holes are formed in the flat nut and used for screwing the nut during installation, and a sealing gasket is arranged between the flat nut and a lower polytetrafluoroethylene base plate on the metal tube plate;
when the prefabricated joint type fluoroplastic heat exchange tube is installed, the whole prefabricated joint type fluoroplastic heat exchange tube penetrates through the heat exchange tube installation hole, the flat nut is screwed towards the direction of the metal tube plate, and the prefabricated joint type fluoroplastic heat exchange tube is tightly sealed with the metal tube plate, the upper PTFE base plate, the lower PTFE base plate and the sealing washer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010284499.9A CN111288834B (en) | 2020-04-13 | 2020-04-13 | Prefabricated joint type fluoroplastic heat exchange tube and tube plate connecting structure and installation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010284499.9A CN111288834B (en) | 2020-04-13 | 2020-04-13 | Prefabricated joint type fluoroplastic heat exchange tube and tube plate connecting structure and installation method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111288834A CN111288834A (en) | 2020-06-16 |
| CN111288834B true CN111288834B (en) | 2021-08-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010284499.9A Active CN111288834B (en) | 2020-04-13 | 2020-04-13 | Prefabricated joint type fluoroplastic heat exchange tube and tube plate connecting structure and installation method |
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0437825A2 (en) * | 1990-01-13 | 1991-07-24 | Andreas Veigel | Heat-exchanger with end plate and sleeve connection |
| JPH11108587A (en) * | 1997-09-30 | 1999-04-23 | Abb Kk | Cross-flow gas-gas heat exchanger |
| CN201529892U (en) * | 2009-10-27 | 2010-07-21 | 北京广厦环能科技有限公司 | Device for placing O-shaped seal ring |
| CN203687743U (en) * | 2013-12-06 | 2014-07-02 | 无锡市华东电力设备有限公司 | Fluoroplastic tubular heat exchanger heat exchange tube and tube plate connected structure |
| CN105822854A (en) * | 2016-05-31 | 2016-08-03 | 江苏金由新材料有限公司 | Connecting structure of non-metallic pipe and metal plate |
| CN206300538U (en) * | 2016-12-07 | 2017-07-04 | 南京宝色股份公司 | The sealing structure that a kind of detachable tantalum heat exchanger tube is connected with tetrafluoro tube sheet |
| CN108237698A (en) * | 2017-12-25 | 2018-07-03 | 浙江鼎诚环保科技有限公司 | A kind of fluoroplastics exchanger tubes and tubesheets connection structure and method |
| CN207894294U (en) * | 2017-12-25 | 2018-09-21 | 浙江鼎诚环保科技有限公司 | A kind of tube plate structure of gas-liquid type teflon heat exchanger |
| CN207894295U (en) * | 2017-12-25 | 2018-09-21 | 浙江鼎诚环保科技有限公司 | A kind of tube plate structure of teflon heat exchanger |
| CN208238627U (en) * | 2017-12-25 | 2018-12-14 | 浙江鼎诚环保科技有限公司 | A kind of gas-liquid type teflon heat exchanger tube plate structure |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206787369U (en) * | 2017-04-28 | 2017-12-22 | 上海金由氟材料股份有限公司 | PTFE tube ends fixed structure in a kind of heat exchanger |
| CN207889164U (en) * | 2017-12-25 | 2018-09-21 | 浙江鼎诚环保科技有限公司 | A kind of fluoroplastics exchanger tubes and tubesheets connection structure |
-
2020
- 2020-04-13 CN CN202010284499.9A patent/CN111288834B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0437825A2 (en) * | 1990-01-13 | 1991-07-24 | Andreas Veigel | Heat-exchanger with end plate and sleeve connection |
| JPH11108587A (en) * | 1997-09-30 | 1999-04-23 | Abb Kk | Cross-flow gas-gas heat exchanger |
| CN201529892U (en) * | 2009-10-27 | 2010-07-21 | 北京广厦环能科技有限公司 | Device for placing O-shaped seal ring |
| CN203687743U (en) * | 2013-12-06 | 2014-07-02 | 无锡市华东电力设备有限公司 | Fluoroplastic tubular heat exchanger heat exchange tube and tube plate connected structure |
| CN105822854A (en) * | 2016-05-31 | 2016-08-03 | 江苏金由新材料有限公司 | Connecting structure of non-metallic pipe and metal plate |
| CN206300538U (en) * | 2016-12-07 | 2017-07-04 | 南京宝色股份公司 | The sealing structure that a kind of detachable tantalum heat exchanger tube is connected with tetrafluoro tube sheet |
| CN108237698A (en) * | 2017-12-25 | 2018-07-03 | 浙江鼎诚环保科技有限公司 | A kind of fluoroplastics exchanger tubes and tubesheets connection structure and method |
| CN207894294U (en) * | 2017-12-25 | 2018-09-21 | 浙江鼎诚环保科技有限公司 | A kind of tube plate structure of gas-liquid type teflon heat exchanger |
| CN207894295U (en) * | 2017-12-25 | 2018-09-21 | 浙江鼎诚环保科技有限公司 | A kind of tube plate structure of teflon heat exchanger |
| CN208238627U (en) * | 2017-12-25 | 2018-12-14 | 浙江鼎诚环保科技有限公司 | A kind of gas-liquid type teflon heat exchanger tube plate structure |
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| CN111288834A (en) | 2020-06-16 |
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