CN220118632U - Low-temperature sealing structure - Google Patents
Low-temperature sealing structure Download PDFInfo
- Publication number
- CN220118632U CN220118632U CN202320851543.9U CN202320851543U CN220118632U CN 220118632 U CN220118632 U CN 220118632U CN 202320851543 U CN202320851543 U CN 202320851543U CN 220118632 U CN220118632 U CN 220118632U
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- CN
- China
- Prior art keywords
- sealing
- low
- shaft sleeve
- sealing liquid
- raw material
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- 238000007789 sealing Methods 0.000 title claims abstract description 116
- 239000002994 raw material Substances 0.000 claims abstract description 21
- 239000007788 liquid Substances 0.000 claims description 47
- 238000009413 insulation Methods 0.000 claims description 16
- 230000000694 effects Effects 0.000 claims description 3
- 238000002955 isolation Methods 0.000 claims description 3
- 229920001774 Perfluoroether Polymers 0.000 claims description 2
- UJMWVICAENGCRF-UHFFFAOYSA-N oxygen difluoride Chemical compound FOF UJMWVICAENGCRF-UHFFFAOYSA-N 0.000 claims description 2
- 239000000463 material Substances 0.000 claims 1
- 230000008602 contraction Effects 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012824 chemical production Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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- Mechanical Sealing (AREA)
Abstract
The utility model discloses a low-temperature sealing structure, which comprises: the shaft body is internally provided with a low-temperature heat exchange medium channel; the corrosive raw material body can be installed in a relative rotation way with the outside of the shaft body through the sealing ring; the sealing ring is stably and hermetically arranged between the sex raw material body and the shaft body through the stable sealing component. Because the heat-insulating shaft sleeve and the mechanical sealing piece form a stable sealing assembly, the stable sealing assembly ensures that the sealing ring realizes stable sealing on the shaft body and the corrosive raw material body, and the problem that the sealing failure is leaked due to cold contraction of the sealing ring after the low-temperature heat exchange medium is input into the conventional low-temperature heat exchange medium channel is solved.
Description
Technical Field
The utility model relates to a low-temperature sealing structure, and belongs to the technical field of sealing structures.
Background
In the equipment of the chemical production process, it is sometimes necessary to rotatably mount the shaft body 1 and the corrosive raw material body 2, which are hollow to form the low-temperature heat exchange medium passage 11, and in order to secure the rotatable sealability, it is necessary to mount the seal ring 3 between the outside of the shaft body and the corrosive raw material container, for example, fig. 2; although the sealing ring can realize the sealing of the shaft body and the corrosive raw material body at normal temperature, after the low-temperature heat exchange medium is continuously input into the low-temperature heat exchange medium channel in the shaft body, the sealing ring has the problem of cold shrinkage, so that the sealing failure is caused to leak.
Disclosure of Invention
In order to solve the technical problems, the utility model provides a low-temperature sealing structure.
The utility model is realized by the following technical scheme.
The utility model provides a low-temperature sealing structure, which comprises:
the shaft body is internally provided with a low-temperature heat exchange medium channel;
the corrosive raw material body can be installed in a relative rotation way with the outside of the shaft body through the sealing ring;
the sealing ring is stably and hermetically arranged between the sex raw material body and the shaft body through the stable sealing component.
The sealing ring is made of perfluoro ether.
The stable sealing assembly comprises a heat insulation shaft sleeve and a mechanical sealing piece.
The heat insulation shaft sleeve is arranged outside the shaft body; the mechanical sealing element is arranged outside the heat insulation shaft sleeve.
The shaft body is provided with a sinking groove outside, a heat insulation shaft sleeve is arranged in the sinking groove, and the heat insulation shaft sleeve is sealed between the shaft body and the corrosive raw material body against the sealing ring.
The mechanical sealing piece leans against the inner side of the heat-insulating shaft sleeve to form a sealing liquid space with the heat-insulating shaft sleeve, sealing liquid is stored in the sealing liquid space, heat exchange between the sealing liquid in the sealing liquid space and a low-temperature heat exchange medium in the low-temperature heat exchange medium channel is reduced under the isolation effect of the heat-insulating shaft sleeve, the heat-insulating shaft sleeve presses the sealing ring in a propping mode, and the sealing ring is guaranteed to stably seal the shaft body and the corrosive raw material body.
And a sealing liquid inlet and a sealing liquid outlet which are communicated with the sealing liquid space are arranged on the side edge of the mechanical sealing piece in the sealing liquid space.
The sealing liquid is discharged from the sealing liquid outlet through the sealing liquid space at the sealing liquid inlet.
The utility model has the beneficial effects that: because the heat-insulating shaft sleeve and the mechanical sealing piece form a stable sealing assembly, the stable sealing assembly ensures that the sealing ring realizes stable sealing on the shaft body and the corrosive raw material body, and the problem that the sealing failure is leaked due to cold contraction of the sealing ring after the low-temperature heat exchange medium is input into the conventional low-temperature heat exchange medium channel is solved.
Drawings
FIG. 1 is a schematic illustration of the present utility model;
FIG. 2 is a schematic diagram of the prior art;
in the figure: 1-a shaft body; 11-a low temperature heat exchange medium channel; 12-a sink; 2-a corrosive raw material; 3-a sealing ring; 4-a heat insulation shaft sleeve; 5-mechanical seals; 51-sealing the liquid space; 52-sealing the liquid inlet; 53-sealing the liquid outlet.
Detailed Description
The technical solution of the present utility model is further described below, but the scope of the claimed utility model is not limited to the above.
As shown in fig. 1.
The utility model provides a low-temperature sealing structure, which comprises:
the inside of the shaft body 1 is provided with a hollow through hole to form a low-temperature heat exchange medium channel 11;
a corrosive raw material body 2 rotatably mounted on the outside of the shaft body 1 through a seal ring 3;
the outside of the shaft body 1 is provided with a sinking groove 12, a heat insulation shaft sleeve 4 is arranged in the sinking groove 12, and the heat insulation shaft sleeve 4 is abutted against the sealing ring 3 to seal between the shaft body 1 and the corrosive raw material body 2.
The mechanical sealing element 5 is arranged on the heat-insulating shaft sleeve 4, the mechanical sealing element 5 forms a sealing liquid space 51 with the heat-insulating shaft sleeve 4 by leaning towards the inner side of the heat-insulating shaft sleeve 4, sealing liquid is stored in the sealing liquid space 51, the sealing liquid in the sealing liquid space 51 reduces heat exchange with a low-temperature heat exchange medium in the low-temperature heat exchange medium channel 11 under the isolation effect of the heat-insulating shaft sleeve 4, the heat-insulating shaft sleeve 4 realizes the jacking of the sealing ring 3, and the sealing ring 3 is ensured to realize stable sealing on the shaft body 1 and the corrosive raw material body 2.
Because the heat-insulating shaft sleeve 4 and the mechanical sealing piece 5 form a stable sealing assembly, the stable sealing assembly ensures that the sealing ring 3 realizes stable sealing on the shaft body 1 and the corrosive raw material body 2, and the problem that the sealing failure is leaked due to cold contraction of the sealing ring after the low-temperature heat exchange medium is input into the conventional low-temperature heat exchange medium channel is solved.
The side of the mechanical seal 5 in the sealing liquid space 51 is provided with a sealing liquid inlet 52 and a sealing liquid outlet 53 which are communicated with the sealing liquid space 51, sealing liquid is input into the sealing liquid space 51 through the sealing liquid inlet 52, and sealing liquid is discharged through the sealing liquid outlet 53, so that the sealing liquid is discharged from the sealing liquid outlet 53 through the sealing liquid space 51 at the sealing liquid inlet 52.
Claims (8)
1. A cryogenic seal structure comprising:
the low-temperature heat exchange device comprises a shaft body (1), wherein a low-temperature heat exchange medium channel (11) is formed in the shaft body (1);
the corrosive raw material body (2), the corrosive raw material body (2) and the outside of the shaft body (1) can be relatively rotatably installed through the sealing ring (3);
the sealing ring (3) is installed between the linear raw material body (2) and the shaft body (1) through a stable sealing component to realize stable sealing.
2. The cryogenic seal of claim 1, wherein: the sealing ring (3) is made of perfluoro ether material.
3. The cryogenic seal of claim 1, wherein: the stable sealing assembly comprises an insulating shaft sleeve (4) and a mechanical sealing element (5).
4. A cryogenic seal as claimed in claim 3, wherein: the heat insulation shaft sleeve (4) is arranged outside the shaft body (1); the mechanical sealing element (5) is arranged outside the heat insulation shaft sleeve (4).
5. The cryogenic seal of claim 4, wherein: the shaft body (1) is externally provided with a sinking groove (12), a heat insulation shaft sleeve (4) is arranged in the sinking groove (12), and the heat insulation shaft sleeve (4) is sealed between the shaft body (1) and the corrosive raw material body (2) against the sealing ring (3).
6. The cryogenic seal of claim 4, wherein: the mechanical sealing piece (5) forms a sealing liquid space (51) towards the inner side of the heat insulation shaft sleeve (4) and the heat insulation shaft sleeve (4), sealing liquid is stored in the sealing liquid space (51), the sealing liquid in the sealing liquid space (51) reduces heat exchange with a low-temperature heat exchange medium in the low-temperature heat exchange medium channel (11) under the isolation effect of the heat insulation shaft sleeve (4), the heat insulation shaft sleeve (4) realizes the jacking of the sealing ring (3), and the sealing ring (3) is guaranteed to realize stable sealing with the shaft body (1) and the corrosive raw material body (2).
7. The cryogenic seal of claim 6, wherein: the side of the mechanical sealing piece (5) of the sealing liquid space (51) is provided with a sealing liquid inlet (52) and a sealing liquid outlet (53) which are communicated with the sealing liquid space (51).
8. The cryogenic seal of claim 6, wherein: the sealing liquid is discharged from the sealing liquid outlet (53) through the sealing liquid space (51) at the sealing liquid inlet (52).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320851543.9U CN220118632U (en) | 2023-04-17 | 2023-04-17 | Low-temperature sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320851543.9U CN220118632U (en) | 2023-04-17 | 2023-04-17 | Low-temperature sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220118632U true CN220118632U (en) | 2023-12-01 |
Family
ID=88915323
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320851543.9U Active CN220118632U (en) | 2023-04-17 | 2023-04-17 | Low-temperature sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220118632U (en) |
-
2023
- 2023-04-17 CN CN202320851543.9U patent/CN220118632U/en active Active
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| GR01 | Patent grant |