CN221006061U - Novel silicon carbide tube type heat exchanger sealing structure - Google Patents
Novel silicon carbide tube type heat exchanger sealing structure Download PDFInfo
- Publication number
- CN221006061U CN221006061U CN202322488785.9U CN202322488785U CN221006061U CN 221006061 U CN221006061 U CN 221006061U CN 202322488785 U CN202322488785 U CN 202322488785U CN 221006061 U CN221006061 U CN 221006061U
- Authority
- CN
- China
- Prior art keywords
- tetrafluoro
- silicon carbide
- tube
- steel lining
- sealing
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 238000007789 sealing Methods 0.000 title claims abstract description 40
- 229910010271 silicon carbide Inorganic materials 0.000 title claims abstract description 40
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 title claims abstract description 30
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 24
- 239000010959 steel Substances 0.000 claims abstract description 24
- 229910000975 Carbon steel Inorganic materials 0.000 claims abstract description 4
- 239000010962 carbon steel Substances 0.000 claims abstract description 4
- 239000000758 substrate Substances 0.000 claims abstract 2
- 238000009434 installation Methods 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 7
- 229920001774 Perfluoroether Polymers 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- UJMWVICAENGCRF-UHFFFAOYSA-N oxygen difluoride Chemical compound FOF UJMWVICAENGCRF-UHFFFAOYSA-N 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000012847 fine chemical Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 229920002313 fluoropolymer Polymers 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Landscapes
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The novel silicon carbide shell and tube heat exchanger sealing structure comprises a steel lining tetrafluoro tube plate and a silicon carbide tube, wherein a carbon steel substrate is arranged on the steel lining tetrafluoro tube plate, a step-shaped threaded mounting hole is formed in the steel lining tetrafluoro tube plate, and the end part of the silicon carbide tube is inserted into the threaded mounting hole of the steel lining tetrafluoro tube plate; in summary, the utility model adopts the simplified combination of the tetrafluoro 0-type ring and the tetrafluoro nut for sealing, the number of the whole sealing elements is greatly reduced, the installation is convenient, the assembly efficiency of the silicon carbide heat exchanger is obviously improved, and the sealing leakage caused by the installation error of the sealing elements is avoided; the tetrafluoro 0-shaped ring is extruded to deform by tightening the tetrafluoro nut, and finally the tetrafluoro 0-shaped ring is tightly attached to the outer wall of the silicon carbide tube and the inner wall of the steel lining tetrafluoro tube plate, so that a good sealing effect is achieved.
Description
Technical Field
The utility model belongs to the technical field of heat exchangers, and particularly relates to a novel silicon carbide tube type heat exchanger sealing structure.
Background
In recent years, with the rapid popularization of silicon carbide heat exchangers, silicon carbide tube type heat exchangers are widely applied to industries such as fine chemical industry, biological medicine, metallurgical acid washing, fluorine chemical industry and the like. Today, the sealing of domestic silicon carbide shell-and-tube heat exchangers tends to be of a three-pad two-ring structure (namely three tetrafluoro gaskets and two rubber O-rings), no better technical progress exists, the sealing structure of the three-pad two-ring structure is relatively complex, one silicon carbide heat exchanger needs to be provided with hundreds of sealing elements, and a plurality of sealing elements are provided, so that assembly workers can be provided with a large number of sealing elements, the risk of assembly errors exists, and in the assembly process of the sealing elements, the sealing failure can be caused by either the few assembly sealing elements or the sealing element sequence errors, and finally the whole silicon carbide heat exchanger is damaged.
Disclosure of utility model
The utility model aims to provide a novel sealing structure of a silicon carbide tube type heat exchanger, and solves the technical problems that the existing silicon carbide tube type heat exchanger adopts a three-pad two-ring sealing structure, and a large number of sealing pieces are installed to easily cause assembly errors.
In order to solve the technical problems, the utility model adopts the following technical scheme:
The utility model provides a novel silicon carbide shell and tube heat exchanger seal structure, includes steel lining tetrafluoro tube sheet and carborundum pipe, have carbon steel base plate on the steel lining tetrafluoro tube sheet, offered step screw thread mounting hole on the steel lining tetrafluoro tube sheet, carborundum pipe tip inserts and establishes in the screw thread mounting hole of steel lining tetrafluoro tube sheet, carborundum pipe's tip polishes, carborundum pipe's tip is provided with tetrafluoro nut and tetrafluoro 0 type ring, and tetrafluoro 0 type ring is used for sealing the clearance between carborundum pipe and the steel lining tetrafluoro tube sheet.
Furthermore, both ends of the tetrafluoro 0-type ring are of a closing-in structure, and the step of the threaded mounting hole and the end part of the tetrafluoro nut are of a bell mouth structure which is matched with the closing-in structure.
Compared with the prior art, the utility model has the beneficial effects that: the utility model adopts the simplified combination of the tetrafluoro 0 ring and the tetrafluoro nut for sealing, the number of the whole sealing elements is greatly reduced, the installation is convenient, the assembly efficiency of the silicon carbide heat exchanger is obviously improved, and the sealing leakage caused by the installation error of the sealing elements is avoided; the tetrafluoro 0-shaped ring is extruded to deform by tightening the tetrafluoro nut, and finally the tetrafluoro 0-shaped ring is tightly attached to the outer wall of the silicon carbide tube and the inner wall of the steel lining tetrafluoro tube plate, so that a good sealing effect is achieved.
Drawings
The accompanying drawings are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the embodiments of the utility model, serve to explain the utility model. In the drawings:
FIG. 1 is a schematic structural view of a novel silicon carbide shell-and-tube heat exchanger seal structure according to the present utility model;
Fig. 2 is an enlarged view at H in fig. 1.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
The present utility model is described in further detail below with reference to examples.
As shown in fig. 1 and fig. 2, the present utility model provides a specific embodiment of a sealing structure of a novel silicon carbide tube heat exchanger:
The utility model provides a novel silicon carbide shell and tube heat exchanger seal structure, includes steel lining tetrafluoro tube sheet 1 and carborundum pipe 2, have carbon steel base plate 3 on the steel lining tetrafluoro tube sheet 1, offered step screw thread mounting hole 4 on the steel lining tetrafluoro tube sheet 1, carborundum pipe 2 tip is inserted and is established in the screw thread mounting hole 4 of steel lining tetrafluoro tube sheet 1, carborundum pipe 2's tip burnishing and polishing, carborundum pipe 2's tip is provided with tetrafluoro nut 5 and tetrafluoro 0 type ring 6, and tetrafluoro 0 type ring 6 is used for sealing the clearance between carborundum pipe 2 and the steel lining tetrafluoro tube sheet 1.
The sealing structure of the embodiment adopts the simplified combination of the tetrafluoro 0-type ring 6 and the tetrafluoro nut 5, the number of sealing elements is greatly reduced, the installation is convenient, the assembly efficiency of the silicon carbide heat exchanger is obviously improved, and the sealing leakage caused by the installation error of the sealing elements is avoided; the tetrafluoro 0-shaped ring 6 is extruded to deform by tightening the tetrafluoro nut 5, and finally the tetrafluoro 0-shaped ring 6 is tightly attached to the outer wall of the silicon carbide tube 2 and the inner wall of the steel lining tetrafluoro tube plate 1, so that the sealing effect is achieved.
In addition, the tetrafluoro 0 type ring 6, the tetrafluoro nut 5 and the steel lining tetrafluoro tube plate 1 adopt PTFE, PFA, FEP and other novel fourth fluoroplastic which can be purchased in China, is not limited by import and is easy to process; as a sealing component, the traditional perfluoroether O-ring has insufficient corrosion resistance, and a few chemical mediums can corrode the sealing component; and under the general working condition, the perfluoroether O-shaped ring can be swelled, aged and broken after long-term use, and finally loses the sealing effect, and compared with the tetrafluoro O-shaped ring in the embodiment, the tetrafluoro O-shaped ring has comprehensive corrosion resistance, covers all corrosive media, has stable performance, can not be swelled and aged after long-term use, and is a better choice.
As another embodiment of the present utility model, as shown in FIG. 2, the two ends of the tetrafluoro 0-type ring 6 are both provided with the closing-in structures 7, the step of the threaded mounting hole 4 and the end of the tetrafluoro nut 5 are both provided with the bell mouth structures 8, the bell mouth structures 8 are matched with the closing-in structures 7, and the annular contact surfaces of the bell mouth structures 8 and the closing-in structures 7 are stressed more uniformly in the extrusion process.
It should be noted that in this document, terms such as "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (2)
1. A novel silicon carbide shell and tube heat exchanger sealing structure is characterized in that: the steel lining tetrafluoro tube plate comprises a steel lining tetrafluoro tube plate and a silicon carbide tube, wherein a carbon steel substrate is arranged on the steel lining tetrafluoro tube plate, a step-shaped threaded mounting hole is formed in the steel lining tetrafluoro tube plate, the end part of the silicon carbide tube is inserted into the threaded mounting hole of the steel lining tetrafluoro tube plate, the end part of the silicon carbide tube is polished, a tetrafluoro nut and a tetrafluoro 0-shaped ring are arranged at the end part of the silicon carbide tube, and the tetrafluoro 0-shaped ring is used for sealing a gap between the silicon carbide tube and the steel lining tetrafluoro tube plate.
2. The novel silicon carbide shell and tube heat exchanger sealing structure according to claim 1, wherein: both ends of the tetrafluoro 0 type ring are of a closing-in structure, the step of the threaded mounting hole and the end part of the tetrafluoro nut are of a horn mouth structure, and the horn mouth structure is matched with the closing-in structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322488785.9U CN221006061U (en) | 2023-09-13 | 2023-09-13 | Novel silicon carbide tube type heat exchanger sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322488785.9U CN221006061U (en) | 2023-09-13 | 2023-09-13 | Novel silicon carbide tube type heat exchanger sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221006061U true CN221006061U (en) | 2024-05-24 |
Family
ID=91124047
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322488785.9U Active CN221006061U (en) | 2023-09-13 | 2023-09-13 | Novel silicon carbide tube type heat exchanger sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221006061U (en) |
-
2023
- 2023-09-13 CN CN202322488785.9U patent/CN221006061U/en active Active
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