CN203809067U - Double-pull-rod self-lubricating balanced-type rotating partition - Google Patents
Double-pull-rod self-lubricating balanced-type rotating partition Download PDFInfo
- Publication number
- CN203809067U CN203809067U CN201420261227.7U CN201420261227U CN203809067U CN 203809067 U CN203809067 U CN 203809067U CN 201420261227 U CN201420261227 U CN 201420261227U CN 203809067 U CN203809067 U CN 203809067U
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- CN
- China
- Prior art keywords
- steam
- partition body
- ring
- swivel becket
- rotating ring
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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.)
- Withdrawn - After Issue
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Abstract
The utility model relates to the field of steam turbines, in particular to a double-pull-rod self-lubricating balanced-type rotating partition which is used on a steam-replenishing steam turbine to control steam extracting and replenishing and is less prone to jamming. The double-pull-rod self-lubricating balanced-type rotating partition comprises a partition body, a rotating ring, a steam balancing chamber cover ring, an adjusting connecting rod and a steam sealing body. The adjusting connecting rod is driven by a hydraulic actuator to control the rotating ring to adjust flow passage area so as to adjust steam extraction pressure and flow, so that the double-pull-rod self-lubricating balanced-type rotating partition is low in pressure loss and good in effect. A self-lubricating DEVA alloy block is adopted between the rotating ring and the partition body, friction force when the rotating ring rotates is reduced due to low friction coefficient of a self-lubricating material, and self-repairing capability of the alloy block enables the alloy block and the rotating ring to be sealed well. A front-end first balancing chamber of the rotating ring is communicated with a later stage, and a second balancing chamber on the rear portion of the rotating ring is communicated with a former stage, so that difference of pressure on two sides of the rotating ring is lowered greatly, the friction force is further reduced when the rotating ring rotates, and the rotating ring is more flexible in rotating.
Description
Technical field
The utility model relates to steam turbine field, especially a kind of duplex pull rod selflubricating balance type rotating dividing plate.
Background technique
Domestic 50MW is adjustable, and the serial unit that draws gas mostly adopts and rotating barrier is set in unit flow passage component realizes the adjusting of drawing gas, and rotating barrier is the distinctive structure of extraction for heat supply formula steam turbine, and the advantage of rotating barrier is that cylinder structure is simple, and rotor length shortens; Shortcoming is complex structure, the structure of rotating barrier flow passage component than extraction control valve complexity many, when rotating barrier both sides pressure reduction is very large, easily bite, causes regulating connecting rod fracture, has reduced the safety reliability of unit.
Model utility content
The purpose of this utility model be the deficiency in order to solve above-mentioned technology and provide a kind of use adjustable take out or filling steam turbine on control and take out filling use, and be not easy to occur the duplex pull rod selflubricating balance type rotating dividing plate of bite phenomenon.
In order to achieve the above object, the duplex pull rod selflubricating balance type rotating dividing plate that the utility model is designed, it comprises partition body, swivel becket, vapour balance cylinder shroud ring, regulating connecting rod and labyrinth casing, and described partition body is divided into upper and lower two semicircular structure, removably connects by bolt; Partition body is along having an annular pass on a circumference, on the inner peripheral surface of annular pass, offer the first vapour leaf joint groove, in the first vapour leaf joint groove, the first leaf grating is installed, the first described leaf grating is made up of identical the first uniform steam passage window of multiple sizes, on the steam output side end face of partition body, is provided with labyrinth casing; Radially have some first balance cylinder's passages at partition body outer shroud, on partition body steam admission side end face, near the first steam passage window both sides, have twice first ring connected in star, in first ring connected in star, be provided with DEVA self-lubrication alloy piece; Described swivel becket divides upper and lower two semicircular structure, removably connects by bolt, and swivel becket is arranged in the circumferential groove of partition body front end, and and partition body between there is angle; Swivel becket is along offering an annular pass on a circumference, on the inner peripheral surface of annular pass, offer the second vapour leaf joint groove, in the second vapour leaf joint groove, be provided with the second leaf grating, the second leaf grating is made up of two kinds of second steam passage windows that vary in size, and the second steam passage window is corresponding one by one with the first steam passage window; On swivel becket outer shroud steam output side end face, be provided with twice the second annular groove, the second annular groove is corresponding with the first ring connected in star on partition body, in the second annular groove, is provided with ring body; Swivel becket both sides are respectively welded with a handle, and handle is connected with regulating connecting rod; Described regulating connecting rod comprises pull bar, rod head, main lever, the auxiliary lever of both sides, and auxiliary lever is connected with oil engine; Described vapour balance cylinder shroud ring divides upper and lower shroud ring, is fixed by screws on partition body; On vapour balance cylinder shroud ring, offer vertically some second balance cylinder's passages, corresponding with first balance cylinder's passage, the first balance cylinder of swivel becket front portion is connected with after level, radially offers some the 3rd balance cylinder's passages, second balance cylinder at swivel becket rear portion is connected with before level.
As optimization, the center line of the first steam passage window and the second steam passage window and dividing plate center be in same plane, and and dividing plate center between distance identical.
As preferably, described DEVA self-lubrication alloy piece is fixed by screws in first ring connected in star, and described ring body is directly welded in the second annular groove.
As preferably, described labyrinth casing is fixed by screws on the steam output side end face of partition body, and labyrinth strip is installed on labyrinth casing.
The duplex pull rod selflubricating balance type rotating dividing plate that the utility model obtains, it drives regulating connecting rod control swivel becket to regulate flow area to adjust extraction pressure and flow by oil engine, has crushing low, effective.Owing to having adopted the DEVA alloy block of selflubricating between swivel becket and partition body, when the low coefficient of friction of self lubricating material makes swivel becket rotation, frictional force reduces, and the self-reparing capability of alloy block makes alloy block and swivel becket form excellent sealing, and Steam loss reduces.Front end first balance cylinder of swivel becket communicates with after level, and second balance cylinder at swivel becket rear portion is connected with before level, makes like this pressure reduction of swivel becket both sides greatly reduce, and when swivel becket rotation, frictional force further reduces, and rotates more flexible.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 be in Fig. 1 A-A to sectional view;
Fig. 3 be in Fig. 1 B-B to sectional view;
Fig. 4 be in Fig. 1 C-C to sectional view;
When Fig. 5 is passage standard-sized sheet, the relative position figure of swivel becket and partition body;
When Fig. 6 is passage complete shut-down, the relative position figure of swivel becket and partition body.
Embodiment
Below by embodiment, the utility model will be further described by reference to the accompanying drawings.
Embodiment 1.
As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4, Fig. 5, Fig. 6, the duplex pull rod selflubricating balance type rotating dividing plate that the present embodiment is described, it comprises partition body 1, swivel becket 2, vapour balance cylinder shroud ring 3, regulating connecting rod 4 and labyrinth casing 5, described partition body 1 is divided into upper and lower two semicircular structure, removably connects by bolt; Partition body 1 is along having an annular pass on a circumference, on the inner peripheral surface of annular pass, offer the first vapour leaf joint groove 6, in the first vapour leaf joint groove 6, the first leaf grating 7 is installed, the first described leaf grating 7 is made up of identical the first uniform steam passage window 8 of multiple sizes, on the steam output side end face of partition body 1, is provided with labyrinth casing 5; Radially have some first balance cylinder's 22 path 10s at partition body 1 outer shroud, on partition body 1 steam admission side end face, near the first steam passage window 8 both sides, have twice first ring connected in star 11, in first ring connected in star 11, be provided with DEVA self-lubrication alloy piece 12; 2 points of upper and lower two semicircular structures of described swivel becket, removably connect by bolt, and swivel becket 2 is arranged in the circumferential groove 13 of partition body 1 front end, and and partition body 1 between there is angle; Swivel becket 2 is along offering an annular pass on a circumference, on the inner peripheral surface of annular pass, offer the second vapour leaf joint groove 14, in the second vapour leaf joint groove 14, be provided with the second leaf grating 15, the second leaf grating 15 is made up of two kinds of second steam passage windows 16 that vary in size, and the second steam passage window 16 is corresponding one by one with the first steam passage window 8; On swivel becket 2 outer shroud steam output side end faces, be provided with twice the second annular groove 18, the second annular grooves 18 corresponding with the first ring connected in star 11 on partition body 1, in the second annular groove 18, be provided with ring body 19; Swivel becket 2 both sides are respectively welded with a handle 17, and handle 17 is connected with regulating connecting rod 4; Described regulating connecting rod 4 comprises pull bar, rod head, main lever, the auxiliary lever of both sides, and auxiliary lever is connected with oil engine 9; 3 points of upper and lower shroud rings of described vapour balance cylinder shroud ring, are fixed by screws on partition body 1; On vapour balance cylinder shroud ring 3, offer vertically some second balance cylinder's 24 passages 21, corresponding with first balance cylinder's 22 path 10s, the first balance cylinder 22 of swivel becket 2 front portions is connected with after level, radially offer some the 3rd balance cylinder's passages 23, second balance cylinder 24 at swivel becket 2 rear portions is connected with before level.
The center line of the first steam passage window 8 and the second steam passage window 16 and dividing plate center be in same plane, and and dividing plate center between distance identical.
Described DEVA self-lubrication alloy piece 12 is fixed by screws in first ring connected in star 11, and described ring body 19 is directly welded in the second annular groove 18.
Described labyrinth casing 5 is fixed by screws on the steam output side end face of partition body 1, on labyrinth casing 5, labyrinth strip is installed.
Claims (4)
1. a duplex pull rod selflubricating balance type rotating dividing plate, it comprises partition body, swivel becket, vapour balance cylinder shroud ring, regulating connecting rod and labyrinth casing, it is characterized in that: described partition body is divided into upper and lower two semicircular structure, removably connects by bolt; Partition body is along having an annular pass on a circumference, on the inner peripheral surface of annular pass, offer the first vapour leaf joint groove, in the first vapour leaf joint groove, the first leaf grating is installed, the first described leaf grating is made up of identical the first uniform steam passage window of multiple sizes, on the steam output side end face of partition body, is provided with labyrinth casing; Radially have some first balance cylinder's passages at partition body outer shroud, on partition body steam admission side end face, near the first steam passage window both sides, have twice first ring connected in star, in first ring connected in star, be provided with DEVA self-lubrication alloy piece; Described swivel becket divides upper and lower two semicircular structure, removably connects by bolt, and swivel becket is arranged in the circumferential groove of partition body front end, and and partition body between there is angle; Swivel becket is along offering an annular pass on a circumference, on the inner peripheral surface of annular pass, offer the second vapour leaf joint groove, in the second vapour leaf joint groove, be provided with the second leaf grating, the second leaf grating is made up of two kinds of second steam passage windows that vary in size, and the second steam passage window is corresponding one by one with the first steam passage window; On swivel becket outer shroud steam output side end face, be provided with twice the second annular groove, the second annular groove is corresponding with the first ring connected in star on partition body, in the second annular groove, is provided with ring body; Swivel becket both sides are respectively welded with a handle, and handle is connected with regulating connecting rod; Described regulating connecting rod comprises pull bar, rod head, main lever, the auxiliary lever of both sides, and auxiliary lever is connected with oil engine; Described vapour balance cylinder shroud ring divides upper and lower shroud ring, is fixed by screws on partition body; On vapour balance cylinder shroud ring, offer vertically some second balance cylinder's passages, corresponding with first balance cylinder's passage, the first balance cylinder of swivel becket front portion is connected with after level, radially offers some the 3rd balance cylinder's passages, second balance cylinder at swivel becket rear portion is connected with before level.
2. a kind of duplex pull rod selflubricating balance type rotating dividing plate according to claim 1, is characterized in that: the center line of the first steam passage window and the second steam passage window and dividing plate center be in same plane, and and dividing plate center between distance identical.
3. a kind of duplex pull rod selflubricating balance type rotating dividing plate according to claim 1, is characterized in that: described DEVA self-lubrication alloy piece is fixed by screws in first ring connected in star, and described ring body is directly welded in the second annular groove.
4. a kind of duplex pull rod selflubricating balance type rotating dividing plate according to claim 1, is characterized in that: described labyrinth casing is fixed by screws on the steam output side end face of partition body, and labyrinth strip is installed on labyrinth casing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420261227.7U CN203809067U (en) | 2014-05-21 | 2014-05-21 | Double-pull-rod self-lubricating balanced-type rotating partition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420261227.7U CN203809067U (en) | 2014-05-21 | 2014-05-21 | Double-pull-rod self-lubricating balanced-type rotating partition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203809067U true CN203809067U (en) | 2014-09-03 |
Family
ID=51447836
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420261227.7U Withdrawn - After Issue CN203809067U (en) | 2014-05-21 | 2014-05-21 | Double-pull-rod self-lubricating balanced-type rotating partition |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203809067U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104033194A (en) * | 2014-05-21 | 2014-09-10 | 杭州中能汽轮动力有限公司 | Dual-pull-rod self-lubricating balanced type rotating separation plate |
-
2014
- 2014-05-21 CN CN201420261227.7U patent/CN203809067U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104033194A (en) * | 2014-05-21 | 2014-09-10 | 杭州中能汽轮动力有限公司 | Dual-pull-rod self-lubricating balanced type rotating separation plate |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140903 Effective date of abandoning: 20160824 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |