CN212717987U - High-temperature steam sealing structure - Google Patents
High-temperature steam sealing structure Download PDFInfo
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- CN212717987U CN212717987U CN202021379684.8U CN202021379684U CN212717987U CN 212717987 U CN212717987 U CN 212717987U CN 202021379684 U CN202021379684 U CN 202021379684U CN 212717987 U CN212717987 U CN 212717987U
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Abstract
The utility model provides a high temperature vapor seal structure relates to high temperature vapor seal structure technical field, has solved the technical problem that traditional labyrinth seal took place the leakage easily under the high temperature vapor operating mode, and this high temperature vapor seal structure includes the pressure balance unit, hinders and seals unit, unloading unit and isolation unit. The utility model discloses a structural style of integral radial non-contact seal and split type radial non-contact seal combination can guarantee at the long period operation of the operating mode of high temperature vapor, also can effectually reduce the leakage quantity of vapor, reaches energy saving and emission reduction's purpose.
Description
Technical Field
The utility model discloses high temperature water vapor seal structure technical field, concretely relates to high temperature water vapor seal structure.
Background
Labyrinth seal refers to a seal having a plurality of tortuous chambers between the rotating and stationary parts to minimize leakage. Is an ideal labyrinth flow passage model. Several annular sealing teeth are arranged around the rotating shaft, a series of cut-off gaps and expansion cavities are formed between the teeth, and the sealed medium generates throttling effect when passing through the gaps of the zigzag labyrinth, so that the purpose of leakage resistance is achieved.
However, the leakage is easy to occur under the working condition of high-temperature water vapor in the traditional labyrinth sealing structure, and the use safety of equipment is influenced.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a high temperature vapor seal structure, through adopting the structural style of integral radial non-contact seal and split type radial non-contact seal combination, solved traditional labyrinth seal and taken place the technical problem who leaks easily under the high temperature vapor operating mode. The utility model provides a plurality of technical effects that preferred technical scheme among a great deal of technical scheme can produce see the explanation below in detail.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a high-temperature water vapor sealing structure comprises a pressure balancing unit, a sealing blocking unit, a venting unit and an isolating unit, wherein the pressure balancing unit, the sealing blocking unit, the venting unit and the isolating unit are arranged between a sealing upper cavity and a sealing lower cavity and a shaft; wherein:
preferably, the pressure balancing unit comprises a first sealing ring connected with the upper sealing cavity, a medium side cavity arranged between the upper sealing cavity and the shaft, a carbon ring seat of the balancing unit arranged between the medium side cavity and the shaft, and a balancing hole formed in the upper sealing cavity;
preferably, a plurality of first sealing elements are further arranged on the carbon ring seat of the balance unit;
preferably, the sealing unit comprises a middle cavity arranged between the sealing upper cavity and the shaft and a sealing unit carbon ring seat arranged between the middle cavity and the shaft;
preferably, a plurality of second sealing elements are further arranged on the sealing unit carbon ring seat;
preferably, a second sealing ring is arranged between the middle cavity and the upper sealing cavity;
preferably, the emptying unit comprises an emptying hole arranged on the sealed upper cavity and a condensation discharge hole arranged on the sealed lower cavity;
preferably, the isolation unit comprises an isolation air hole arranged on the upper sealed cavity, an atmosphere side cavity arranged below the isolation air hole and a middle ring arranged below the atmosphere side cavity;
preferably, a plurality of third sealing elements are further arranged in the intermediate ring.
Optionally or preferably, the first sealing ring is a high temperature resistant axial sealing ring.
Alternatively or preferably, the first seal is an integral non-contact seal.
Optionally or preferably, the second and third seals are both split radial non-contact seals.
Optionally or preferably, the second sealing ring is a high-temperature-resistant radial sealing ring.
Based on the technical scheme, the following technical effects can be generated:
the embodiment of the utility model provides a pair of high temperature vapor seal structure is applicable to and seals on being applicable to equipment such as compressor, expander. The utility model relates to a high temperature vapor seal structure has solved traditional labyrinth seal structure and has leaked big technical problem under high temperature vapor operating mode through setting up the pressure balance unit in sealed department, hindering and sealing unit, unloading unit and isolation unit. The utility model relates to a high temperature vapor seal structure mainly adopts the structural style of integral radial non-contact seal and split type radial non-contact seal combination, can guarantee at the long period operation of the operating mode of high temperature vapor, also can effectually reduce the leakage quantity of vapor, reaches energy saving and emission reduction's purpose.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is an integral non-contact seal of the present invention;
FIG. 3 is a view of the split non-contact seal of the present invention;
in the figure: 1. a first sealing ring; 2. a first sealing element; 3. a media-side cavity; 4. a balancing unit carbon ring seat; 5. a middle cavity; 6. a second sealing element; 7. a block unit carbon ring seat; 8. an atmosphere-side cavity; 9. an intermediate ring; 10. a second sealing ring; 11. a third sealing element; 12. a balance hole; 13. an emptying hole; 14. isolating the air holes; 15. a drainage hole; 16. a shaft; 17. sealing the upper cavity; 18. the lower cavity is sealed.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
The invention will be further described with reference to the accompanying drawings, but the scope of the invention is not limited to the following description.
As shown in fig. 1-3:
the utility model provides a high-temperature steam sealing structure, which comprises a pressure balancing unit, a sealing blocking unit, a venting unit and an isolating unit which are arranged between a sealing upper cavity 17, a sealing lower cavity 18 and a shaft 16; wherein:
the pressure balancing unit comprises a sealing ring I1 connected with the upper sealing cavity, a medium side cavity 3 arranged between the upper sealing cavity 17 and the shaft 16, a balancing unit carbon ring seat 4 arranged between the medium side cavity 3 and the shaft 16 and a balancing hole 12 formed in the upper sealing cavity 17;
a plurality of first sealing elements 2 are further arranged on the balance unit carbon ring seat 4;
the sealing resistance unit comprises a middle cavity 5 arranged between a sealing upper cavity 17 and a shaft 16 and a sealing resistance unit carbon ring seat 7 arranged between the middle cavity 5 and the shaft 16;
a plurality of second sealing elements 6 are further arranged on the sealing-resistant unit carbon ring seat 7;
a second sealing ring 10 is also arranged between the middle cavity 5 and the upper sealing cavity 17;
the emptying unit comprises an emptying hole 13 arranged on a sealed upper cavity 17 and a condensation discharge hole 15 arranged on a sealed lower cavity 18;
the isolation unit comprises an isolation air hole 14 arranged on the upper sealed cavity 17, an atmosphere side cavity 8 arranged below the isolation air hole 14 and a middle ring 9 arranged below the atmosphere side cavity 8;
a plurality of third sealing elements 11 are also arranged in the middle ring 9.
As an alternative embodiment, the first sealing ring 1 is a high-temperature-resistant axial sealing ring.
As an alternative embodiment, the seal one 2 is a one-piece non-contact seal.
As an alternative embodiment, the second seal 6 and the third seal 11 are both split radial non-contact seals.
In an alternative embodiment, the second sealing ring 10 is a high-temperature-resistant radial sealing ring.
As an optional implementation mode, the isolation air hole 14 is filled with isolation air, the process medium leaked from the blocking unit is guided to the position of the vent, and the water vapor is prevented from leaking to the bearing box.
As an optional implementation mode, a sealing ring made of high-temperature-resistant materials is adopted for static sealing at a high-temperature contact position, a special design is adopted for the sealing ring which needs to be matched with the cylindrical surface of the machine shell to generate sealing performance, and the sealing ring is convenient to mount while the sealing performance is ensured.
As an optional implementation mode, each unit of the high-temperature water vapor sealing structure is installed in a grading mode, an auxiliary installation plate and an auxiliary installation tool are arranged, and field installation is facilitated.
As an optional implementation mode, the high-temperature water vapor sealing structure adopts a structural form of combining an integral radial non-contact seal and a split radial non-contact seal, so that long-period operation under the working condition of high-temperature water vapor can be ensured, the leakage rate of the water vapor can be effectively reduced, and the purposes of energy conservation and emission reduction are achieved.
Claims (5)
1. A high temperature vapor seal structure which characterized in that: including setting up in sealed cavity (17) and sealed cavity (18) down and axle (16) between pressure balance unit, hinder and seal unit, unloading unit and isolation unit, wherein:
the pressure balancing unit comprises a first sealing ring (1) connected with the upper sealing cavity, a medium side cavity (3) arranged between the upper sealing cavity (17) and the shaft (16), a balancing unit carbon ring seat (4) arranged between the medium side cavity (3) and the shaft (16) and a balancing hole (12) formed in the upper sealing cavity (17);
a plurality of first sealing elements (2) are further arranged on the balance unit carbon ring seat (4);
the sealing blocking unit comprises a middle cavity (5) arranged between the upper sealing cavity (17) and the shaft (16) and a sealing blocking unit carbon ring seat (7) arranged between the middle cavity (5) and the shaft (16);
a plurality of second sealing elements (6) are further arranged on the sealing blocking unit carbon ring seat (7);
a second sealing ring (10) is arranged between the middle cavity (5) and the upper sealing cavity (17);
the emptying unit comprises an emptying hole (13) arranged on the sealed upper cavity (17) and a condensation discharge hole (15) arranged on the sealed lower cavity (18);
the isolation unit comprises an isolation air hole (14) arranged on the upper sealed cavity (17), an atmosphere side cavity (8) arranged below the isolation air hole (14) and a middle ring (9) arranged below the atmosphere side cavity (8);
a plurality of sealing elements III (11) are further arranged in the middle ring (9).
2. A high temperature water vapor seal structure according to claim 1, wherein: the first sealing ring (1) is a high-temperature-resistant axial sealing ring.
3. A high temperature water vapor seal structure according to claim 1, wherein: the first sealing element (2) is an integral non-contact sealing element.
4. A high temperature water vapor seal structure according to claim 1, wherein: and the second sealing element (6) and the third sealing element (11) are split radial non-contact sealing elements.
5. A high temperature water vapor seal structure according to claim 1, wherein: and the second sealing ring (10) is a high-temperature-resistant radial sealing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021379684.8U CN212717987U (en) | 2020-07-14 | 2020-07-14 | High-temperature steam sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021379684.8U CN212717987U (en) | 2020-07-14 | 2020-07-14 | High-temperature steam sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212717987U true CN212717987U (en) | 2021-03-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021379684.8U Active CN212717987U (en) | 2020-07-14 | 2020-07-14 | High-temperature steam sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212717987U (en) |
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2020
- 2020-07-14 CN CN202021379684.8U patent/CN212717987U/en active Active
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