CN202883025U - Last-stage dehumidification clapboard of nuclear steam turbine - Google Patents
Last-stage dehumidification clapboard of nuclear steam turbine Download PDFInfo
- Publication number
- CN202883025U CN202883025U CN 201220612594 CN201220612594U CN202883025U CN 202883025 U CN202883025 U CN 202883025U CN 201220612594 CN201220612594 CN 201220612594 CN 201220612594 U CN201220612594 U CN 201220612594U CN 202883025 U CN202883025 U CN 202883025U
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- weep hole
- arc
- clapboard
- last
- inner arc
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Abstract
The utility model discloses a last-stage dehumidification clapboard of a nuclear steam turbine, which belongs to the technical field of dehumidification for a last-stage clapboard of a nuclear steam turbine, and solves the problem of low stage efficiency due to a poor dehumidification effect on a solid blade of a dehumidification structure of an existing last-stage clapboard of a nuclear steam turbine. The last-stage dehumidification clapboard comprises a clapboard body part and a last-stage clapboard solid blade, wherein two drainage cavities are formed in an outer ring of the clapboard body part along a circumferential direction; a plurality of outer ring drainage holes are uniformly distributed between the two drainage cavities along the circumferential direction and are communicated with the drainage cavities; drainage cutting grooves are formed in the both ends and the middle of the clapboard body part along the circumferential direction and are communicated with one another at the circle centre of the clapboard body part, and the tail ends of the drainage cutting grooves are communicated with the outer ring drainage holes; a plurality of inner arc drainage grooves and a plurality of inner arc drainage holes are formed in the inner arc of the last-stage clapboard solid blade along an axial direction; and a plurality of outer arc drainage grooves and a plurality of outer arc drainage holes are formed in the outer arc of the last-stage clapboard solid blade along the axial direction. The technical scheme disclosed by the utility model is suitable for production of the last-stage clapboard of the nuclear steam turbine.
Description
Technical field
The utility model relates to a kind of nuclear steam turbine final stage dividing plate that dries, and belongs to the nuclear steam turbine L O section technical field of drying.
Background technique
Existing steam turbine last stage dividing plate generally adopts grade inner top to separate and conduit is inner separates and dry in the method that the dividing plate outer shroud is opened hydrophobic pocket, the inner mode of separating of conduit is at blade opens drain tank, this structure of drying has certain difficulty when being used for the drying of nuclear power final stage solid vane, thereby can't guarantee stage efficiency and prevent that solid vane is etched, therefore can affect operation and the economic performance of steam turbine.
The model utility content
The utility model is to dry structure when solid vane is dried for what solve existing steam turbine last stage dividing plate, and the weak effect that dries causes the low problem of stage efficiency, and a kind of nuclear steam turbine final stage dividing plate that dries is provided.
The nuclear steam turbine final stage described in the utility model dividing plate that dries, it comprises dividing plate our department and L O section solid vane, dividing plate our department outer shroud is along the circumferential twice hydrophobic pocket that has, between the twice hydrophobic pocket along a plurality of outer shroud weep holes of circumferential even distribution, the outer shroud weep hole is connected with hydrophobic pocket, dividing plate our department along circumferential two ends and the middle part have the hydrophobic groove that cuts, all are hydrophobic cuts grooves and is communicated with at the circle centre position of dividing plate our department, and the hydrophobic end that cuts groove is communicated with the outer shroud weep hole;
Described L O section solid vane inner arc has a plurality of inner arc drain tanks and a plurality of inner arc weep hole vertically, the fluting direction of inner arc drain tank and the perforate direction of inner arc weep hole are axially, inner arc drain tank and inner arc weep hole are communicated with separately, the inner arc drain tank is identical with the number of inner arc weep hole, and the top of L O section solid vane is the inner arc weep hole;
Described L O section solid vane outer arc has a plurality of outer arc drain tanks and a plurality of outer arc weep hole vertically, the fluting direction of outer arc drain tank and the perforate direction of outer arc weep hole are axially, outer arc drain tank and outer arc weep hole are communicated with separately, the outer arc drain tank is identical with the number of outer arc weep hole, and the top of L O section solid vane is the outer arc weep hole.
A plurality of outer shroud weep holes are corresponding one by one with inner arc weep hole and outer arc weep hole that all are positioned at L O section solid vane top.
The utility model has the advantages that: the utility model is improved by the structure of drying of existing nuclear steam turbine L O section, be that drain tank adds the weep hole structure with original drain tank structural change, and aim at inner arc weep hole and the accurate of outer arc weep hole by the outer shroud weep hole, guarantee the effect of drying of nuclear steam turbine group L O section, and guaranteed blade strength.Thereby prevented that blade erosion from also finally having guaranteed operation and the economic performance of steam turbine.
Description of drawings
Fig. 1 is the structural representation of dividing plate of the present utility model our department;
Fig. 2 is the axonometric drawing of L O section solid vane;
Fig. 3 is the sectional view of dividing plate our department, and A is separation place of this ministerial level of dividing plate inner top among the figure.
Embodiment
Embodiment one: present embodiment is described below in conjunction with Fig. 1 to Fig. 3, the described nuclear steam turbine final stage of the present embodiment dividing plate that dries, it comprises dividing plate our department 1 and L O section solid vane 2, dividing plate our department 1 outer shroud is along the circumferential twice hydrophobic pocket 1-1 that has, between twice hydrophobic pocket 1-1 along a plurality of outer shroud weep hole of circumferential even distribution 1-2, outer shroud weep hole 1-2 is connected with hydrophobic pocket 1-1, dividing plate our department 1 along circumferential two ends and the middle part have the hydrophobic groove 1-3 that cuts, all hydrophobic groove 1-3 that cut are communicated with at the circle centre position of dividing plate our department 1, and the hydrophobic end that cuts groove 1-3 is communicated with outer shroud weep hole 1-2;
Described L O section solid vane 2 inner arcs have a plurality of inner arc drain tank 2-1 and a plurality of inner arc weep hole 2-2 vertically, the perforate direction of the fluting direction of inner arc drain tank 2-1 and inner arc weep hole 2-2 is axially, inner arc drain tank 2-1 and inner arc weep hole 2-2 are communicated with separately, inner arc drain tank 2-1 is identical with the number of inner arc weep hole 2-2, and the top of L O section solid vane 2 is inner arc weep hole 2-2;
Described L O section solid vane 2 outer arcs have a plurality of outer arc drain tank 2-3 and a plurality of outer arc weep hole 2-4 vertically, the perforate direction of the fluting direction of outer arc drain tank 2-3 and outer arc weep hole 2-4 is axially, outer arc drain tank 2-3 and outer arc weep hole 2-4 are communicated with separately, outer arc drain tank 2-3 is identical with the number of outer arc weep hole 2-4, and the top of L O section solid vane 2 is outer arc weep hole 2-4.
Present embodiment is carried out technology and is improved for hydrophobic the drying of nuclear steam turbine L O section, adopts the level inner top to separate and the inner mode of separating of conduit, has guaranteed the final stage stage efficiency, and can prevent that solid vane is etched.Open simultaneously drain tank and weep hole at L O section solid vane 2 back of the body arcs and inner arc, and over dividing plate our department outer shroud, encircle weep hole 1-2, ensured the effect of drying of final stage solid vane.
Embodiment two: present embodiment is described below in conjunction with Fig. 1 and Fig. 2, present embodiment is for to the further specifying of mode of execution one, and a plurality of outer shroud weep hole 1-2 are corresponding one by one with inner arc weep hole 2-2 and outer arc weep hole 2-4 that all are positioned at L O section solid vane 2 tops.
Present embodiment had both ensured the intensity of L O section solid vane 2, had guaranteed again the final stage stage efficiency.
The optimum position of inner arc drain tank 2-1, inner arc weep hole 2-2, outer arc drain tank 2-3 and outer arc weep hole 2-4 can adopt full three-dimensional simulation technique that the L O section blade is carried out simulation calculation to determine.
Claims (2)
1. nuclear steam turbine final stage dividing plate that dries, it comprises dividing plate our department (1) and L O section solid vane (2), dividing plate our department (1) outer shroud is along the circumferential twice hydrophobic pocket (1-1) that has, it is characterized in that: between twice hydrophobic pocket (1-1) along a plurality of outer shroud weep holes of circumferential even distribution (1-2), outer shroud weep hole (1-2) is connected with hydrophobic pocket (1-1), dividing plate our department (1) along circumferential two ends and the middle part have the hydrophobic groove (1-3) that cuts, all hydrophobic grooves (1-3) that cut are communicated with at the circle centre position of dividing plate our department (1), and the hydrophobic end that cuts groove (1-3) is communicated with outer shroud weep hole (1-2);
Described L O section solid vane (2) inner arc has a plurality of inner arc drain tanks (2-1) and a plurality of inner arc weep hole (2-2) vertically, the perforate direction of the fluting direction of inner arc drain tank (2-1) and inner arc weep hole (2-2) is axially, inner arc drain tank (2-1) and inner arc weep hole (2-2) are communicated with separately, inner arc drain tank (2-1) is identical with the number of inner arc weep hole (2-2), and the top of L O section solid vane (2) is inner arc weep hole (2-2);
Described L O section solid vane (2) outer arc has a plurality of outer arc drain tanks (2-3) and a plurality of outer arc weep hole (2-4) vertically, the perforate direction of the fluting direction of outer arc drain tank (2-3) and outer arc weep hole (2-4) is axially, outer arc drain tank (2-3) and outer arc weep hole (2-4) are communicated with separately, outer arc drain tank (2-3) is identical with the number of outer arc weep hole (2-4), and the top of L O section solid vane (2) is outer arc weep hole (2-4).
2. the nuclear steam turbine final stage according to claim 1 dividing plate that dries, it is characterized in that: a plurality of outer shroud weep holes (1-2) are corresponding one by one with inner arc weep hole (2-2) and outer arc weep hole (2-4) that all are positioned at L O section solid vane (2) top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220612594 CN202883025U (en) | 2012-11-19 | 2012-11-19 | Last-stage dehumidification clapboard of nuclear steam turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220612594 CN202883025U (en) | 2012-11-19 | 2012-11-19 | Last-stage dehumidification clapboard of nuclear steam turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202883025U true CN202883025U (en) | 2013-04-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220612594 Expired - Lifetime CN202883025U (en) | 2012-11-19 | 2012-11-19 | Last-stage dehumidification clapboard of nuclear steam turbine |
Country Status (1)
| Country | Link |
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| CN (1) | CN202883025U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102937037A (en) * | 2012-11-19 | 2013-02-20 | 哈尔滨汽轮机厂有限责任公司 | Final-stage dehumidification partition board of nuclear turbine |
-
2012
- 2012-11-19 CN CN 201220612594 patent/CN202883025U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102937037A (en) * | 2012-11-19 | 2013-02-20 | 哈尔滨汽轮机厂有限责任公司 | Final-stage dehumidification partition board of nuclear turbine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130417 |
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| CX01 | Expiry of patent term |