CN216240960U - Gas supply transmission valve for PG9171E type gas turbine - Google Patents
Gas supply transmission valve for PG9171E type gas turbine Download PDFInfo
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- CN216240960U CN216240960U CN202122544306.1U CN202122544306U CN216240960U CN 216240960 U CN216240960 U CN 216240960U CN 202122544306 U CN202122544306 U CN 202122544306U CN 216240960 U CN216240960 U CN 216240960U
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- China
- Prior art keywords
- air
- gas
- compressor
- transmission valve
- supply transmission
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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.)
- Expired - Fee Related
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 33
- 238000000605 extraction Methods 0.000 claims abstract description 20
- 238000007789 sealing Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 230000004888 barrier function Effects 0.000 description 3
- 239000010687 lubricating oil Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 1
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Abstract
The embodiment of the utility model provides an air supply transmission valve for a PG9171E type gas turbine, which comprises a 5-stage air extraction pipeline, an 11-stage air extraction pipeline, 1, 2 and 3# bearings, an air compressor, a turbine and an air supply transmission valve of the air compressor, and is characterized in that: the gas transmission end of the gas supply transmission valve is respectively connected with the gas inlet ends of the 1, 2 and 3# bearings; the 5-stage air extraction pipeline and the 11-stage air extraction pipeline of the air compressor are respectively connected with the air inlet end of the air supply transmission valve; the bearing No. 1, the air compressor, the bearing No. 2, the turbine and the bearing No. 3 are sequentially connected.
Description
Technical Field
The utility model relates to an air supply transmission valve for a PG9171E type gas turbine.
Background
The former PG9171E type gas turbine adopts compressor 5 stage air extraction (AE-5) to be introduced into two ends of a bearing to form a pressure barrier, and lubricating oil which might leak out through mechanical seal of the bearing is brought back to a bearing box. The AE-5 has good sealing effect on the bearing at the full-load operation stage of the gas turbine, but has low pressure and poor sealing effect at the start and stop stages of the unit, thereby easily generating potential safety hazard.
Disclosure of Invention
The embodiment of the application provides an air supply transmission valve for PG9171E type gas turbine, adopts the air supply transmission valve to introduce 11 grades of bleeds (AE-11), can reach better sealed effect.
The embodiment of the application provides a gas supply transmission valve for a PG9171E type gas turbine, including the 5 grades of extraction lines, 11 grades of extraction lines, 1, 2, 3# bearings, compressor, turbine, gas supply transmission valve of compressor, the gas transmission end of gas supply transmission valve is connected with the inlet end of 1, 2, 3# bearings respectively, gas is transmitted to 1, 2, 3# bearings by gas supply transmission valve, the both ends of introducing bearing form a pressure barrier, take back the lubricating oil that probably leaks out through bearing mechanical seal back to the bearing box.
And a 5-stage air extraction pipeline and an 11-stage air extraction pipeline of the compressor are respectively connected with the air inlet end of the air supply transmission valve.
The bearing No. 1, the air compressor, the bearing No. 2, the turbine and the bearing No. 3 are sequentially connected.
Furthermore, the air supply transmission valve is a three-way valve, and an air supply end can be freely selected.
Further, a pressure gauge is arranged at an exhaust port of the air compressor, and the pressure gauge is electrically connected with the air supply transmission valve. The air compressor discharge pressure CPD. When the CPD is more than 90Psi, the gas is supplied by 5 compressor stages, and when the CPD is less than 75Psi, the gas is supplied by 11 compressor stages.
One or more technical solutions in the embodiments of the present application have at least one or more of the following technical effects:
the control principle is as follows: at the initial stage of starting the gas turbine, the 5-stage air extraction pressure of the gas compressor is low, and the gas supply transmission valve supplies sealing gas to the 1#, 2#, and 3# bearings of the gas turbine through the 11-stage air extraction from the gas compressor; when the gas turbine is loaded, the gas compressor is gradually pressurized, and then the gas supply transmission valve is switched to 5 stages for air extraction to provide sealing gas for bearings of the gas turbines #1, #2 and #3, so that a better sealing effect can be achieved.
Drawings
FIG. 1 is a schematic diagram of the system of the present invention;
Detailed Description
The embodiment of the application provides a gas supply transmission valve for a PG9171E type gas turbine, which comprises a 5-stage air extraction pipeline AE-5 and an 11-stage air extraction pipeline AE-11 of a compressor, 1, 2 and 3# bearings, the compressor 4, a turbine 5 and a gas supply transmission valve 6. The gas transmission end of the gas supply transmission valve 6 is respectively connected with the gas inlet ends of the bearings 1, 2 and 3, gas is transmitted to the bearings 1, 2 and 3 through the gas supply transmission valve 6 and is introduced into the two ends of the bearings to form a pressure barrier, and lubricating oil which can leak out through mechanical sealing of the bearings is brought back to the bearing box.
And 5-stage air extraction pipelines AE-5 and 11-stage air extraction pipelines AE-11 of the air compressor are respectively connected with the air inlet end of the air supply transmission valve 6. The bearing No. 1, the compressor 4, the bearing No. 2, the turbine 5 and the bearing No. 3 are connected in sequence. The air supply transmission valve 6 is a three-way valve, and an air supply end can be freely selected. The air compressor 4 is provided with a pressure gauge at the air outlet, and the pressure gauge is electrically connected with an air supply transmission valve 6. Is determined according to the compressor 4 discharge pressure CPD. When the CPD is more than 90Psi, the gas is supplied by 5 compressor stages, and when the CPD is less than 75Psi, the gas is supplied by 11 compressor stages.
Claims (3)
1. A gas supply transmission valve for a PG9171E type gas turbine comprises a 5-stage air extraction pipeline, an 11-stage air extraction pipeline, 1, 2 and 3# bearings, a compressor, a turbine and a gas supply transmission valve of the compressor, and is characterized in that:
the gas transmission end of the gas supply transmission valve is respectively connected with the gas inlet ends of the 1, 2 and 3# bearings;
the 5-stage air extraction pipeline and the 11-stage air extraction pipeline of the air compressor are respectively connected with the air inlet end of the air supply transmission valve;
the bearing No. 1, the air compressor, the bearing No. 2, the turbine and the bearing No. 3 are sequentially connected.
2. A supply air transfer valve for a gas turbine of the PG9171E type as claimed in claim 1, wherein the supply air transfer valve is a three-way valve.
3. A supply air transfer valve for a gas turbine of the PG9171E type as claimed in claim 1, wherein the compressor discharge port is provided with a pressure gauge, and the pressure gauge and the supply air transfer valve are electrically connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122544306.1U CN216240960U (en) | 2021-10-21 | 2021-10-21 | Gas supply transmission valve for PG9171E type gas turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122544306.1U CN216240960U (en) | 2021-10-21 | 2021-10-21 | Gas supply transmission valve for PG9171E type gas turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216240960U true CN216240960U (en) | 2022-04-08 |
Family
ID=80990315
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122544306.1U Expired - Fee Related CN216240960U (en) | 2021-10-21 | 2021-10-21 | Gas supply transmission valve for PG9171E type gas turbine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216240960U (en) |
-
2021
- 2021-10-21 CN CN202122544306.1U patent/CN216240960U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220408 |
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| CF01 | Termination of patent right due to non-payment of annual fee |