CN211081988U - Elastic sealing device for sealing steam of steam seal before high pressure of steam turbine - Google Patents
Elastic sealing device for sealing steam of steam seal before high pressure of steam turbine Download PDFInfo
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- CN211081988U CN211081988U CN202020030354.1U CN202020030354U CN211081988U CN 211081988 U CN211081988 U CN 211081988U CN 202020030354 U CN202020030354 U CN 202020030354U CN 211081988 U CN211081988 U CN 211081988U
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- sealing ring
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Abstract
The utility model discloses an elastic sealing device for sealing steam by a high-pressure front steam seal of a steam turbine, which consists of an outer sealing ring, an inner sealing ring and an elastic pipe; the outer sealing ring and the inner sealing ring are of a whole-circle structure; the section of the elastic pipe is of an annular structure, an opening is formed in the elastic pipe, and two sides of the opening are respectively connected with the outer sealing ring and the inner sealing ring in a sealing mode. The utility model discloses a terminal surface before the cylinder is installed to the device external seal ring, and on the outer gear gland casing of interior sealing ring installation gland seal in the front, elasticity steel pipe structural connection has guaranteed the elastic construction of this device between the inside and outside seal ring, is unlikely to become a rigid body with cylinder and gland casing company. In addition, the inner sealing ring and the outer sealing ring are of a whole-circle structure, and a horizontal split surface is not arranged, so that the sealing performance is fully guaranteed.
Description
Technical Field
The utility model relates to an elastic sealing device that is used for gland sealing steam before steam turbine high pressure, the device install in gland sealing outermost shelves before high pressure.
Background
The leakage of the steam turbine often takes place at the steam turbine high pressure end, outwards leaks along the assembly clearance of gland casing and cylinder, because the assembly relation between cylinder and the gland casing, can not do seal welding with the leakage steam department and handle, leads to the sealed problem of here to solve hardly. In addition, because the steam is very close to the front bearing seat, leaked steam generates condensed water to be mixed into the front bearing seat, water enters lubricating oil, aging and emulsification of oil are accelerated, so that the lubricating performance of the oil is greatly reduced, the effects of cooling, heat dissipation, speed regulation reduction and the like are difficult to be fully exerted, friction is increased, damage is caused to an oil film, and further the bearing is overheated.
Disclosure of Invention
The invention aims to provide an elastic sealing device for sealing steam in a steam turbine high-pressure front gland seal, which can fully ensure the sealing property.
In order to solve the technical problems, the invention adopts the following technical scheme: an elastic sealing device for sealing steam by a steam seal before high pressure of a steam turbine consists of an outer sealing ring, an inner sealing ring and an elastic pipe; the outer sealing ring and the inner sealing ring are of a whole-circle structure; the section of the elastic pipe is of an annular structure, an opening is formed in the elastic pipe, and two sides of the opening are respectively connected with the outer sealing ring and the inner sealing ring in a sealing mode.
Furthermore, the elastic pipe is welded with the outer sealing ring and the inner sealing ring.
Furthermore, the outer sealing ring comprises an outer sealing ring body and an inner connecting body arranged on the inner side of the outer sealing ring body.
Further, the inner sealing ring comprises an inner sealing ring body and an outer connecting body arranged on the outer side of the inner sealing ring body.
The utility model has the advantages that: the utility model discloses a terminal surface before the cylinder is installed to the device external seal ring, and on the outer gear gland casing of interior sealing ring installation gland seal in the front, elasticity steel pipe structural connection has guaranteed the elastic construction of this device between the inside and outside seal ring, is unlikely to become a rigid body with cylinder and gland casing company. In addition, the inner sealing ring and the outer sealing ring are of a whole-circle structure, and a horizontal split surface is not arranged, so that the sealing performance is fully guaranteed.
Drawings
Fig. 1 is a schematic view of the elastic sealing cover of the present invention.
Fig. 2 is a sectional view taken along the line a of fig. 1.
Fig. 3 is a schematic view of the installation of the elastic sealing cover.
Detailed Description
As shown in fig. 1, the elastic sealing device for sealing steam in a high-pressure front gland of a steam turbine according to the present invention comprises an outer sealing ring 210, an inner sealing ring 220, and an elastic tube 230; the outer sealing ring 210 and the inner sealing ring 220 are of a whole-circle structure; the section of the elastic tube 230 is an annular structure, an opening is formed in the elastic tube 230, and two sides of the opening are respectively connected with the outer sealing ring 210 and the inner sealing ring 220 in a sealing manner. The elastic tube 230 is welded to the outer sealing ring 210 and the inner sealing ring 220. The outer seal ring 210 includes an outer seal ring body and an inner connection body disposed inside the outer seal ring body. The inner seal ring 220 includes an inner seal ring body and an outer connecting body disposed outside the inner seal ring body.
As can be seen from the installation diagram of the elastic sealing cover in fig. 3, the outer ring of the elastic sealing cover is fastened on the front end surface of the cylinder through a bolt, and the inner ring of the elastic sealing cover is fastened on the gland casing through a bolt. High temperature steam generally leaks from the joint of the steam seal body and the cylinder and the horizontal middle split surface of the steam seal body. The sealing cover can block the two leakage points to prevent steam from leaking, and condensed water is formed at the bearing seat and enters lubricating oil to cause potential safety hazards. Meanwhile, the gland sealing body and the cylinder are centered by a lug of a horizontal median plane without rigid connection, and the sealing cover is made into an elastic structure in order to eliminate the influence of the cylinder on driving the gland sealing body due to thermal expansion.
The above-mentioned embodiments are merely descriptions of the preferred embodiments of the present invention, and do not limit the concept and scope of the present invention, and various modifications and improvements made to the technical solutions of the present invention by those skilled in the art should fall into the protection scope of the present invention without departing from the design concept of the present invention, and the technical contents of the present invention as claimed are all described in the technical claims.
Claims (4)
1. The utility model provides an elastic sealing device that is used for gland sealing steam before steam turbine high pressure which characterized in that: the sealing ring is composed of an outer sealing ring (210), an inner sealing ring (220) and an elastic pipe (230); the outer sealing ring (210) and the inner sealing ring (220) are of a whole-circle structure; the section of the elastic pipe (230) is of an annular structure, an opening is formed in the elastic pipe (230), and two sides of the opening are respectively connected with the outer sealing ring (210) and the inner sealing ring (220) in a sealing mode.
2. The elastic sealing device for sealing steam of a high-pressure front gland seal of a steam turbine according to claim 1, wherein: the elastic pipe (230) is welded with the outer sealing ring (210) and the inner sealing ring (220).
3. The elastic sealing device for sealing steam of a high-pressure front gland seal of a steam turbine according to claim 1, wherein: the outer sealing ring (210) comprises an outer sealing ring body and an inner connecting body arranged on the inner side of the outer sealing ring body.
4. The elastic sealing device for sealing steam of a high-pressure front gland seal of a steam turbine according to claim 1, wherein: the inner sealing ring (220) comprises an inner sealing ring body and an outer connecting body arranged on the outer side of the inner sealing ring body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020030354.1U CN211081988U (en) | 2020-01-08 | 2020-01-08 | Elastic sealing device for sealing steam of steam seal before high pressure of steam turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020030354.1U CN211081988U (en) | 2020-01-08 | 2020-01-08 | Elastic sealing device for sealing steam of steam seal before high pressure of steam turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211081988U true CN211081988U (en) | 2020-07-24 |
Family
ID=71646013
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020030354.1U Active CN211081988U (en) | 2020-01-08 | 2020-01-08 | Elastic sealing device for sealing steam of steam seal before high pressure of steam turbine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211081988U (en) |
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2020
- 2020-01-08 CN CN202020030354.1U patent/CN211081988U/en active Active
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