CN220522638U - Steam sealing system of steam turbine - Google Patents
Steam sealing system of steam turbine Download PDFInfo
- Publication number
- CN220522638U CN220522638U CN202322194592.2U CN202322194592U CN220522638U CN 220522638 U CN220522638 U CN 220522638U CN 202322194592 U CN202322194592 U CN 202322194592U CN 220522638 U CN220522638 U CN 220522638U
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- CN
- China
- Prior art keywords
- steam
- heater
- steam turbine
- seal
- gland
- Prior art date
- 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 description 10
- 210000004907 gland Anatomy 0.000 claims description 22
- 239000000498 cooling water Substances 0.000 claims description 5
- 210000003437 trachea Anatomy 0.000 claims 6
- 238000010438 heat treatment Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
The utility model relates to the technical field of vapor seal systems, in particular to a steam seal system of a steam turbine, which comprises a first steam turbine and a second steam turbine, wherein the first steam turbine and the second steam turbine are respectively provided with a first vapor seal and a second vapor seal, air leakage ports on the first vapor seal and the second vapor seal are respectively connected with a first vapor seal heater and a second vapor seal heater through a first air pipe and a second air pipe, a connecting pipe is connected between the first air pipe and the second air pipe, a valve is arranged on the connecting pipe, and valves are arranged on the first air pipe between the connecting pipe and the first vapor seal heater and the second air pipe between the connecting pipe and the second vapor seal heater; according to the utility model, by arranging the connecting pipe, after one of the first steam seal heater and the second steam seal heater fails, the failed heater can be isolated, the air leakage of the steam turbine is introduced into the other normally operated heater, the steam turbine does not need to be stopped, and the normal operation of the steam turbine is ensured.
Description
Technical Field
The utility model relates to the technical field of gland sealing systems, in particular to a steam sealing system of a steam turbine.
Background
The steam turbine is matched with a steam seal heater for collecting steam seal leakage at the shaft end of the steam turbine, preventing environmental pollution in a factory building, heating the makeup water and improving the heat circulation efficiency; the problem of leakage of the tube bundle often occurs in the operation process of the steam seal heater, when the steam seal heater of the steam turbine leaks, the steam seal heater of the steam turbine cannot be separated independently for plugging, and the steam seal heater can be maintained only after the whole steam turbine is stopped, so that the normal operation of the steam turbine is affected.
Disclosure of Invention
The utility model mainly aims to provide a turbine gland sealing system which solves the problem that a turbine must be shut down when a turbine gland sealing heater leaks in the prior art.
In order to achieve the above purpose, the utility model provides a steam sealing system of a steam turbine, which comprises a first steam turbine and a second steam turbine, wherein the first steam turbine and the second steam turbine are respectively provided with a first steam seal and a second steam seal, air leakage ports on the first steam seal and the second steam seal are respectively connected with a first steam seal heater and a second steam seal heater through a first air pipe and a second air pipe, a connecting pipe is connected between the first air pipe and the second air pipe, a valve is arranged on the connecting pipe, and valves are arranged on the first air pipe between the connecting pipe and the first steam seal heater and on the second air pipe between the connecting pipe and the second steam seal heater.
Further, the first steam seal and the second steam seal both comprise a high-pressure side steam seal and a low-pressure side steam seal.
Further, the first air pipe and the second air pipe comprise two branch pipes and 1 main pipe connected with the two branch pipes, and the main pipe is connected with the connecting pipe.
Further, the first steam seal heater and the second steam seal heater are both connected with a cooling water pipeline.
According to the utility model, by arranging the connecting pipe, after one of the first steam seal heater and the second steam seal heater fails, the failed heater can be isolated, the air leakage of the steam turbine is introduced into the other normally operated heater, the steam turbine does not need to be stopped, and the normal operation of the steam turbine is ensured.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model.
FIG. 1 is a schematic diagram of an embodiment;
in the figure: 1. a first turbine; 2. a second turbine; 3. a first vapor seal heater; 4. a second gland seal heater; 5. a communication pipe; 6. high-pressure side air sealing; 7. low pressure side air seal; 8. a branch pipe; 9. a header pipe; 10. and a cooling water pipeline.
Detailed Description
It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. The utility model will be described in detail below with reference to the drawings in connection with embodiments.
As shown in fig. 1, according to an embodiment of the present utility model, there is provided a steam sealing system of a steam turbine, including a first steam turbine 1 and a second steam turbine 2, wherein the first steam turbine 1 and the second steam turbine 2 are respectively provided with a first steam seal and a second steam seal, the first steam seal and the second steam seal both include a high-pressure side gas seal 6 and a low-pressure side gas seal 7, air leakage ports on the high-pressure side gas seal 6 and the low-pressure side gas seal 7 are connected with one end of a main pipe 9 through a branch pipe 8, the other ends of the 2 main pipes 9 are respectively connected with a first steam seal heater 3 and a second steam seal heater 4, and a connecting pipe 5 is connected between the 2 main pipes 9.
Valves are arranged on the connecting pipe 5, on a main pipe 9 between the connecting pipe 5 and the first steam seal heater 3 and on a main pipe 9 between the connecting pipe 5 and the second steam seal heater 4.
The first steam seal heater 3 and the second steam seal heater 4 are connected with a cooling water pipeline 10, and heat in the air leakage of the steam turbine is used for heating cooling water.
In this embodiment, when the first steam seal heater 3 or the second steam seal heater 4 fails, the failed heater can be isolated by controlling the valves on the connecting pipe 5 and the main pipe 9, and the leakage air of the steam turbines is introduced into the other normally operated heater, so that the mutual standby of the heaters of the two steam turbines is realized.
Before the embodiment is used, after the heater fails, the steam turbine is required to be stopped for 72 hours, and the heater is maintained, so that the normal operation of the steam turbine is affected; after the embodiment is used, the heater can be maintained under the condition that the steam turbine is not stopped, and continuous and stable operation of the steam turbine is ensured.
The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (4)
1. The utility model provides a steam turbine gland sealing system, its characterized in that, includes first turbine (1) and second turbine (2), be equipped with first gland seal and second gland seal on first turbine (1) and second turbine (2) respectively, the gas leakage mouth on first gland seal and the second gland seal is connected first gland seal heater (3) and second gland seal heater (4) through first trachea and second trachea respectively, be connected with connecting pipe (5) between first trachea and the second trachea, be equipped with the valve on connecting pipe (5) on the first trachea between connecting pipe (5) and first gland seal heater (3) and on connecting pipe (5) and the second trachea between second gland seal heater (4).
2. The turbine gland system of claim 1, wherein the first gland and the second gland each comprise a high pressure side gland (6) and a low pressure side gland (7).
3. The steam turbine gland system according to claim 1 wherein the first and second gas pipes each comprise two branch pipes (8) and 1 manifold (9) connected to the two branch pipes, the manifold (9) being connected to the connecting pipe (5).
4. The steam turbine gland system according to claim 1, characterized in that the first gland heater (3) and the second gland heater (4) are connected with a cooling water pipeline (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322194592.2U CN220522638U (en) | 2023-08-16 | 2023-08-16 | Steam sealing system of steam turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322194592.2U CN220522638U (en) | 2023-08-16 | 2023-08-16 | Steam sealing system of steam turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220522638U true CN220522638U (en) | 2024-02-23 |
Family
ID=89932957
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322194592.2U Active CN220522638U (en) | 2023-08-16 | 2023-08-16 | Steam sealing system of steam turbine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220522638U (en) |
-
2023
- 2023-08-16 CN CN202322194592.2U patent/CN220522638U/en active Active
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