CN204646342U - A kind of steam turbine cylinder - Google Patents
A kind of steam turbine cylinder Download PDFInfo
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- CN204646342U CN204646342U CN201520225902.5U CN201520225902U CN204646342U CN 204646342 U CN204646342 U CN 204646342U CN 201520225902 U CN201520225902 U CN 201520225902U CN 204646342 U CN204646342 U CN 204646342U
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Abstract
The utility model discloses a kind of steam turbine cylinder, comprise outer shell and be positioned at the inner casing inside described outer shell, described outer shell is put together by first cylinder body of outer shell and second cylinder body of outer shell, described inner casing is put together by first cylinder body of inner casing and second cylinder body of inner casing, forms interlayer between described outer shell and described inner casing; The bottom of described second cylinder body of outer shell offers outer shell steam-expelling port and outer shell extraction opening; The top of described first cylinder body of outer shell is closed.Its technique effect is: the designing requirement that can meet multi-cylinder steam turbine cylinder steam discharge re-heating subsystem, solve the vapor flow dead-time problem that large regions confined space may bring, improve the Security of unit operation, and effectively simplify the complexity of multi-cylinder steam turbine integral arrangement, improve the Economy of Construction of Unit.
Description
Technical field
The utility model relates to a kind of steam turbine cylinder of field of generating equipment.
Background technique
As shown in Figure 1, conventional vapor turbo machine, the inner casing 1 that intermediate cylinder comprises outer shell 1 and is positioned at inside outer shell 1, wherein outer shell 1 is divided into first cylinder body 11 of outer shell and second cylinder body 12 of outer shell.Inner casing 2 is divided into first cylinder body 21 of inner casing and second cylinder body 22 of inner casing.Offer outer shell steam-expelling port 3 straight up at the top of first cylinder body 11 of outer shell, middle pressure exhaust steam is imported next stage cylinder by connecting tube by outer shell steam-expelling port 3.Offer outer shell extraction opening 4 straight down in the bottom of second cylinder body 12 of outer shell, for from drawing gas in flow area or steam discharge, connected by pipeline and import heat regenerative system.Adopt the steam turbine cylinder of this kind of structure, space between first cylinder body 11 of outer shell and first cylinder body 21 of inner casing is larger, perforate distribution on first cylinder body 21 of inner casing in order, steam flow flowing is smooth and easy, vapor flow dead band on a large scale can not be formed in interlayer between outer shell 1 and inner casing 2, formation temperature gathering can not affect unit safety operation.Its drawback is mainly: be limited to outer shell steam-expelling port 3 and be opened in first cylinder body 11 of outer shell, if its steam discharge need be led back boiler reheater by large diameter pipeline, then need to walk on steamturbine machine platform, bring complicated factor to steam turbine integral arrangement, reduce Security and the Economy of unit.
Model utility content
The purpose of this utility model is to overcome the deficiencies in the prior art, a kind of steam turbine cylinder is provided, it can meet the designing requirement of multi-cylinder steam turbine cylinder steam discharge re-heating subsystem, solve the vapor flow dead-time problem that large regions confined space may bring, improve the Security of unit operation, and effectively simplify the complexity of multi-cylinder steam turbine integral arrangement, improve the Economy of Construction of Unit.
A kind of technological scheme realizing above-mentioned purpose is: a kind of steam turbine cylinder, comprise outer shell and be positioned at the inner casing inside described outer shell, described outer shell is put together by first cylinder body of outer shell and second cylinder body of outer shell, described inner casing is put together by first cylinder body of inner casing and second cylinder body of inner casing, forms interlayer between described outer shell and described inner casing;
The bottom of described second cylinder body of outer shell offers outer shell steam-expelling port and outer shell extraction opening; The top of described first cylinder body of outer shell is closed.
Further, the end face of described first outer wall of cylinder block of inner casing is arranged with the upper diversion column of two row along described steam turbine cylinder axially-aligned.
Further, first inboard wall of cylinder block of described outer shell is provided with the guide rib along described steam turbine cylinder axially-aligned.
Further, the bottom surface of described second outer wall of cylinder block of inner casing is arranged with the lower diversion column of two row along described steam turbine cylinder axially-aligned.
Have employed the technological scheme of a kind of steam turbine cylinder of the present utility model, comprise outer shell and be positioned at the inner casing inside described outer shell, described outer shell is put together by first cylinder body of outer shell and second cylinder body of outer shell, described inner casing is put together by first cylinder body of inner casing and second cylinder body of inner casing, forms interlayer between described outer shell and described inner casing; The bottom of described second cylinder body of outer shell offers outer shell steam-expelling port and outer shell extraction opening; The top of described first cylinder body of outer shell is closed.Its technique effect is: the designing requirement that can meet multi-cylinder steam turbine cylinder steam discharge re-heating subsystem, solve the vapor flow dead-time problem that large regions confined space may bring, improve the Security of unit operation, and effectively simplify the complexity of multi-cylinder steam turbine integral arrangement, improve the Economy of Construction of Unit.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the axial cross section of a kind of steam turbine cylinder of prior art.
Fig. 2 is the schematic diagram of the axial cross section of a kind of steam turbine cylinder of the utility model.
Embodiment
Refer to Fig. 2, inventor of the present utility model, in order to understand the technical solution of the utility model better, below by embodiment particularly, and is described in detail by reference to the accompanying drawings:
Refer to Fig. 2, a kind of steam turbine cylinder of the present utility model, the inner casing 2 comprising outer shell 1 and be positioned at inside outer shell 1, wherein outer shell 1 is divided into first cylinder body 11 of outer shell and second cylinder body 12 of outer shell.Inner casing 2 is divided into first cylinder body 21 of inner casing and second cylinder body 22 of inner casing.The flow direction of direction of arrow signal steam turbine in the interlayer of cylinder steam discharge between inner casing 2 and outer shell 1 in Fig. 2.
The top of first cylinder body 11 of outer shell is without heavy caliber perforate, and namely the top of first cylinder body 11 of outer shell is closed.The bottom of second cylinder body 12 of outer shell offers outer shell steam-expelling port 3 and outer shell extraction opening 4, the top of first cylinder body 21 outer wall of inner casing is arranged with the upper diversion column 51 of two row along first cylinder body 21 axial arranging of inner casing, the bottom symmetrical of second cylinder body 22 outer wall of inner casing is provided with the lower diversion column 52 of two row along second cylinder body 22 axial arranging of inner casing, and the inwall of first cylinder body 11 of outer shell is provided with the some guide ribs 53 along this steam turbine cylinder axial arranging.
Simultaneously, rotor 6 is also provided with in inner casing 2, the flow area, inside 7 formed between the inwall of rotor 6 and inner casing 2, after exhaust steam is discharged from inner flow area 7, enter in the interlayer between inner casing 2 and outer shell 1, by point flow disturbance of upper diversion column 51, lower diversion column 52 and guide rib 53, between inner casing 2 and outer shell 1, the top of interlayer is not easy to form vapor flow dead band, improves the Security that steam turbine runs.Steam steam flow comes downwards to outer shell steam-expelling port 3 eventually through multiple direction, discharges from outer shell steam-expelling port 3, to meet the requirement of steam turbine system reheating.A kind of steam turbine cylinder of the present utility model, effectively simplifies the complexity of multi-cylinder turbine integral arrangement in structure simultaneously, improves the Economy of Construction of Unit, and is applicable to the steam turbine of various model, specification.
In this example, for upper diversion column 51, lower diversion column 52 with can adjust in actual design with the quantity of guide rib 53 and concrete shape.
A kind of steam turbine cylinder of the present utility model, first cylinder body 11 of outer shell does not establish bigbore outer shell steam-expelling port 3, utilizes the requirement meeting re-heating subsystem being positioned at the outer shell steam-expelling port 3 of second cylinder body 12 of outer shell.In employing, the mode of diversion column 51, lower diversion column 52 and guide rib 53 solves the vapor flow dead-time problem that large regions confined space may bring.Namely under the prerequisite that can meet the requirement of steamturbine unit re-heating subsystem, by designing the molded line between inner casing 2 and outer shell 1 interlayer and partial structurtes, ensure in steam turbine cylinder, Security and the Economy of steam turbine operation, without vapor flow dead band, is improved in closed area between first cylinder body 21 of inner casing and first cylinder body 11 of outer shell.
As can be seen from above-mentioned technological scheme, have employed a kind of steam turbine cylinder of the present utility model, at first cylinder body 11 of outer shell without heavy caliber perforate, and carry out steam discharge from second cylinder body 12 of outer shell, while meeting the requirement of steamturbine unit re-heating subsystem, the interior molded line of first cylinder body 11 of conservative control outer shell and the outer molded line of first cylinder body 21 of inner casing, and can need to arrange one or more guide rib 53 along this steam turbine axially-aligned or the two row upper diversion column 51 along this steam turbine cylinder axially-aligned at the outer wall of first cylinder body 11 inwall of outer shell or first cylinder body 21 of inner casing according to design, and its shape, the selection of position and angle is wide in range, effectively solve the vapor flow dead-time problem that large regions confined space may bring.
A kind of steam turbine cylinder of the present utility model, the designing requirement of multi-cylinder steam turbine cylinder steam discharge re-heating subsystem can be met, solve the vapor flow dead-time problem that large regions confined space may bring, improve the Security of unit operation, and effectively simplify the complexity of multi-cylinder steam turbine integral arrangement, improve the Economy of Construction of Unit.
Those of ordinary skill in the art will be appreciated that, above embodiment is only used to the utility model is described, and be not used as restriction of the present utility model, as long as in spirit of the present utility model, all will drop in Claims scope of the present utility model the change of the above embodiment, modification.
Claims (4)
1. a steam turbine cylinder, comprise outer shell and be positioned at the inner casing inside described outer shell, described outer shell is put together by first cylinder body of outer shell and second cylinder body of outer shell, described inner casing is put together by first cylinder body of inner casing and second cylinder body of inner casing, forms interlayer between described outer shell and described inner casing; It is characterized in that:
The bottom of described second cylinder body of outer shell offers outer shell steam-expelling port and outer shell extraction opening; The top of described first cylinder body of outer shell is closed.
2. a kind of steam turbine cylinder according to claim 1, is characterized in that: the end face of described first outer wall of cylinder block of inner casing is arranged with the upper diversion column of two row along described steam turbine cylinder axially-aligned.
3. a kind of steam turbine cylinder according to claim 1, is characterized in that: first inboard wall of cylinder block of described outer shell is provided with the guide rib along described steam turbine cylinder axially-aligned.
4. according to a kind of steam turbine cylinder according to claim 1, it is characterized in that: the bottom surface of described second outer wall of cylinder block of inner casing is arranged with the lower diversion column of two row along described steam turbine cylinder axially-aligned.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520225902.5U CN204646342U (en) | 2015-04-15 | 2015-04-15 | A kind of steam turbine cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520225902.5U CN204646342U (en) | 2015-04-15 | 2015-04-15 | A kind of steam turbine cylinder |
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| Publication Number | Publication Date |
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| CN204646342U true CN204646342U (en) | 2015-09-16 |
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| CN201520225902.5U Active CN204646342U (en) | 2015-04-15 | 2015-04-15 | A kind of steam turbine cylinder |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106917648A (en) * | 2015-12-25 | 2017-07-04 | 上海电气电站设备有限公司 | The cylinder heat insulation structural of steam turbine |
| CN109707470A (en) * | 2018-11-30 | 2019-05-03 | 东方电气集团东方汽轮机有限公司 | A kind of small size double-layer tubular cylinder structure |
-
2015
- 2015-04-15 CN CN201520225902.5U patent/CN204646342U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106917648A (en) * | 2015-12-25 | 2017-07-04 | 上海电气电站设备有限公司 | The cylinder heat insulation structural of steam turbine |
| CN106917648B (en) * | 2015-12-25 | 2019-06-11 | 上海电气电站设备有限公司 | The cylinder heat insulation structural of steam turbine |
| CN109707470A (en) * | 2018-11-30 | 2019-05-03 | 东方电气集团东方汽轮机有限公司 | A kind of small size double-layer tubular cylinder structure |
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