CN213838687U - Novel subcritical 300MW steam turbine through-flow structure suitable for high-pressure extraction - Google Patents
Novel subcritical 300MW steam turbine through-flow structure suitable for high-pressure extraction Download PDFInfo
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- CN213838687U CN213838687U CN202022550976.XU CN202022550976U CN213838687U CN 213838687 U CN213838687 U CN 213838687U CN 202022550976 U CN202022550976 U CN 202022550976U CN 213838687 U CN213838687 U CN 213838687U
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Abstract
The utility model provides a novel subcritical 300MW steam turbine through-flow structure that adapts to high pressure extraction steam, the utility model relates to a steam turbine through-flow structure, the utility model discloses a solve the problem that current subcritical 300MW steam turbine through-flow can't adapt to the high temperature high pressure industry extraction of power plant demand of steaming, the utility model discloses a regulation level, high-pressure through-flow, middling pressure through-flow and compensating ring, regulation level, high-pressure through-flow and compensating ring set up and are connected with the high-pressure jar through high-pressure admission pipe respectively from left to right, and the middling pressure through-flow is located the left side of regulation level and is connected with the intermediate pressure jar through the middling pressure admission pipe, and regulation level, high-pressure through-flow, middling pressure through-flow and compensating ring communicate each other. The invention can enable the subcritical 300MW unit turbine to provide 5.441MPa of 100 ton pressure per hour.
Description
Technical Field
The utility model relates to a turbine through-flow structure, concretely relates to novel subcritical 300MW turbine through-flow structure that adapts to high pressure extraction of steam.
Background
The passage of the working steam flow in the steam turbine body becomes the through-flow part of the steam turbine, and at present, the through-flow of the domestic subcritical 300MW steam turbine cannot meet the requirement of high-temperature high-pressure industrial steam extraction of a power plant.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a solve the problem that current subcritical 300MW steam turbine through-flow can't adapt to the high temperature high pressure industry of power plant and take out the vapour demand, and then provide a novel subcritical 300MW steam turbine through-flow structure that adapts to high pressure and takes out the vapour.
The utility model discloses a solve the technical scheme that above-mentioned problem was taken and be:
the utility model discloses a regulation level, high-pressure through-flow, middling pressure through-flow and compensating ring, regulation level, high-pressure through-flow and compensating ring set up from left to right and are connected with the high-pressure jar through high-pressure admission pipe respectively, and the middling pressure through-flow is located the left side of regulation level and is connected with the intermediate pressure jar through the middling pressure admission pipe, and regulation level, high-pressure through-flow, middling pressure through-flow and compensating ring communicate each other.
Furthermore, high-pressure through-flow includes that high pressure baffle cover through-flow and high pressure No. two baffle cover through-flows, and high pressure baffle cover through-flow and high pressure No. two baffle cover through-flows are connected with the regulation level from left to right in proper order, and No. two baffle cover through-flows of high pressure are connected with the gimbal ring.
Further, the through-flow structure further comprises a gap bridge steam seal, and the gap bridge steam seal is communicated with the adjusting stage and is positioned on the left side of the adjusting stage.
Further, the through-flow structure further comprises a steam inlet balance drum, and the steam inlet balance drum is communicated with the gap bridge steam seal.
Further, the medium-pressure through flow comprises a medium-pressure inner cylinder 1-6 level through flow, a medium-pressure partition plate sleeve 7-8 level through flow and a medium-pressure partition plate sleeve 9-11 level through flow, and the medium-pressure inner cylinder 1-6 level through flow, the medium-pressure partition plate sleeve 7-8 level through flow and the medium-pressure partition plate sleeve 9-11 level through flow are sequentially connected with the steam inlet balance drum from right to left.
The utility model has the advantages that:
the utility model provides a problem that subcritical 300MW steam turbine through-flow can't adapt to the high temperature high pressure industry of power plant and take out the vapour demand, through the utility model discloses can make subcritical 300MW unit steam turbine can provide 100 tons, the industry of pressure 5.441MPa every hour and take out the vapour.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Detailed Description
The first embodiment is as follows: the embodiment is described with reference to fig. 1, and the novel subcritical 300MW steam turbine through-flow structure adapted to high-pressure extraction in the embodiment includes a regulating stage 1, a high-pressure through-flow, a medium-pressure through-flow and balance ring 4, the regulating stage 1, the high-pressure through-flow and balance ring 4 are arranged from left to right and are respectively connected with a high-pressure cylinder through a high-pressure steam inlet pipe, the medium-pressure through-flow is located on the left side of the regulating stage 1 and is connected with a medium-pressure cylinder through a medium-pressure steam inlet pipe, and the regulating stage 1, the high-pressure through-flow, the medium-pressure through-flow and the balance ring 4 are communicated with each other.
The second embodiment is as follows: the embodiment is described with reference to fig. 1, the high-pressure through flow includes a first high-pressure separator sleeve through flow 2 and a second high-pressure separator sleeve through flow 3, the first high-pressure separator sleeve through flow 2 and the second high-pressure separator sleeve through flow 3 are connected with the regulating stage 1 from left to right in sequence, and the second high-pressure separator sleeve through flow 3 is connected with the balance ring 4.
Other components and connections are the same as those in the first embodiment.
The third concrete implementation mode: the through-flow structure of the present embodiment further includes a bridge steam seal 5, and the bridge steam seal 5 is communicated with the regulating stage 1 and is located on the left side of the regulating stage 1. Other components are connected in the same manner as in the second embodiment.
The fourth concrete implementation mode: the through-flow structure of the present embodiment further includes a steam inlet balance drum 6, and the steam inlet balance drum 6 is communicated with the bridge steam seal 5.
Other components and connection relationships are the same as those in the first, second or third embodiment.
The fifth concrete implementation mode: the embodiment is described with reference to fig. 1, the medium-pressure through flow in the embodiment comprises a medium-pressure inner cylinder 1-6 stage through flow 7, a medium-pressure partition plate sleeve 7-8 stage through flow 8 and a medium-pressure partition plate sleeve 9-11 stage through flow 9, and the medium-pressure inner cylinder 1-6 stage through flow 7, the medium-pressure partition plate sleeve 7-8 stage through flow 8 and the medium-pressure partition plate sleeve 9-11 stage through flow 9 are sequentially connected with a steam inlet balance drum 6 from right to left.
Other components and connections are the same as those of the first, second, third or fourth embodiments.
The working principle is as follows:
after new steam with the pressure of 16.7MPa and the temperature of 538 ℃ passes through the adjusting stage 1 and flows through the high-pressure No. 1 partition sleeve through flow 2 (high pressure level 1-9), one part of the new steam flows into the No. 1 high-pressure heater and provides industrial steam extraction through the No. 1 steam extraction pipe, the rest part of the new steam flows through the high-pressure No. 2 partition sleeve through flow 3 (high pressure level 10-13), most of the new steam is discharged out of a high-pressure cylinder, and the small part of the new steam flows into a steam seal at the end of the heightening medium-pressure cylinder through the high-pressure steam-discharging balance ring 4 (;
the reheated steam enters the medium-pressure inner cylinder through-flow 7 (medium-pressure 1-6 level) through a medium-pressure steam inlet pipe, and in addition, a small part of steam after the adjusting level 1 meets the steam from the high discharge through a bridge steam seal 5(5 circles of steam seals) and then flows into the medium-pressure inner cylinder through-flow 7 (medium-pressure 1-6 level) through a steam inlet balance drum 6(1 circle of steam seals). After the medium-pressure inner cylinder is subjected to through flow 7 (medium-pressure 1-6 stages), part of steam enters a stage through flow 8 of a medium-pressure partition plate sleeve 7-8, and part of steam flows out to a # 3 high-pressure heater. After the middle-pressure partition plate sleeve is subjected to stage flow 8, one part of steam flows into the middle-pressure partition plate sleeve 9-11 stage flow 9, and the other part of steam enters the small steam turbine to do work. Most of steam is discharged out of the medium pressure cylinder after the medium pressure partition plate sleeve is subjected to level 9-11 through flow, a small part of steam is sent to the deaerator, and a small part of steam is sent to the steam seal at the electric end of the high and medium pressure cylinder.
The above description is only a preferred embodiment of the present invention, and the present invention is not limited to the above description, and although the present invention has been disclosed with the preferred embodiment, it is not limited to the present invention, and any skilled person in the art can make modifications or changes equivalent to the equivalent embodiment without departing from the technical scope of the present invention, but all the modifications, equivalent substitutions, and improvements made to the above embodiments within the spirit and principle of the present invention still belong to the protection scope of the technical solution of the present invention.
Claims (5)
1. The utility model provides a novel subcritical 300MW steam turbine through-flow structure of adaptation high pressure extraction which characterized in that: a novel subcritical 300MW steam turbine through-flow structure that adapts to high-pressure extraction steam includes that regulation level (1), high-pressure through-flow, middling pressure through-flow and compensating ring (4), regulation level (1), high-pressure through-flow and compensating ring (4) set up from left to right and are connected with the high-pressure jar through the high-pressure steam inlet pipe respectively, and the middling pressure through-flow is located the left side of regulation level (1) and is connected with the intermediate pressure jar through the middling pressure steam inlet pipe, and regulation level (1), high-pressure through-flow, middling pressure through-flow and compensating ring (4) communicate each other.
2. The novel subcritical 300MW steam turbine through-flow structure adapted for high pressure extraction according to claim 1, wherein: the high-pressure through flow comprises a first high-pressure partition sleeve through flow (2) and a second high-pressure partition sleeve through flow (3), the first high-pressure partition sleeve through flow (2) and the second high-pressure partition sleeve through flow (3) are sequentially connected with the adjusting stage (1) from left to right, and the second high-pressure partition sleeve through flow (3) is connected with the balance ring (4).
3. The novel subcritical 300MW steam turbine through-flow structure adapted for high pressure extraction according to claim 1, wherein: the through-flow structure further comprises a gap bridge steam seal (5), and the gap bridge steam seal (5) is communicated with the adjusting stage (1) and is positioned on the left side of the adjusting stage (1).
4. The novel subcritical 300MW steam turbine through-flow structure adapted for high pressure extraction according to claim 1, wherein: the through-flow structure also comprises a steam inlet balance drum (6), and the steam inlet balance drum (6) is communicated with the gap bridge steam seal (5).
5. The novel subcritical 300MW steam turbine through-flow structure adapted for high pressure extraction according to claim 1, wherein: the medium-pressure through flow comprises a medium-pressure inner cylinder 1-6 level through flow (7), a medium-pressure partition plate sleeve 7-8 level through flow (8) and a medium-pressure partition plate sleeve 9-11 level through flow (9), wherein the medium-pressure inner cylinder 1-6 level through flow (7), the medium-pressure partition plate sleeve 7-8 level through flow (8) and the medium-pressure partition plate sleeve 9-11 level through flow (9) are sequentially connected with the steam inlet balance drum (6) from right to left.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202022550976.XU CN213838687U (en) | 2020-11-06 | 2020-11-06 | Novel subcritical 300MW steam turbine through-flow structure suitable for high-pressure extraction |
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| CN202022550976.XU CN213838687U (en) | 2020-11-06 | 2020-11-06 | Novel subcritical 300MW steam turbine through-flow structure suitable for high-pressure extraction |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112228158A (en) * | 2020-11-06 | 2021-01-15 | 国电泉州热电有限公司 | Novel subcritical 300MW steam turbine through-flow structure suitable for high-pressure extraction |
| CN114278384A (en) * | 2021-12-15 | 2022-04-05 | 东方电气集团东方汽轮机有限公司 | Adjustable steam extraction type steam turbine axial thrust balancing structure and method |
-
2020
- 2020-11-06 CN CN202022550976.XU patent/CN213838687U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112228158A (en) * | 2020-11-06 | 2021-01-15 | 国电泉州热电有限公司 | Novel subcritical 300MW steam turbine through-flow structure suitable for high-pressure extraction |
| CN112228158B (en) * | 2020-11-06 | 2023-10-31 | 国电泉州热电有限公司 | Subcritical 300MW steam turbine through-flow structure adapting to high-pressure steam extraction |
| CN114278384A (en) * | 2021-12-15 | 2022-04-05 | 东方电气集团东方汽轮机有限公司 | Adjustable steam extraction type steam turbine axial thrust balancing structure and method |
| CN114278384B (en) * | 2021-12-15 | 2023-08-01 | 东方电气集团东方汽轮机有限公司 | Axial thrust balancing structure and method for adjustable extraction steam turbine |
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Address after: 362804 Kecuo village, Nanpu Town, Quangang District, Quanzhou City, Fujian Province Patentee after: Guoneng (Quanzhou) Thermal Power Co.,Ltd. Patentee after: Harbin Steam Turbine Factory Co., Ltd. Address before: 362000 Kecuo village, Nanpu Town, Quangang District, Quanzhou City, Fujian Province Patentee before: GUODIAN QUANZHOU THERMAL POWER Co.,Ltd. Patentee before: Harbin Steam Turbine Factory Co., Ltd. |
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