CN201193542Y - Adjustable steam seal lock screw fastening device - Google Patents
Adjustable steam seal lock screw fastening device Download PDFInfo
- Publication number
- CN201193542Y CN201193542Y CNU2008200229078U CN200820022907U CN201193542Y CN 201193542 Y CN201193542 Y CN 201193542Y CN U2008200229078 U CNU2008200229078 U CN U2008200229078U CN 200820022907 U CN200820022907 U CN 200820022907U CN 201193542 Y CN201193542 Y CN 201193542Y
- Authority
- CN
- China
- Prior art keywords
- seal ring
- screw
- steam seal
- gland seal
- fastening device
- Prior art date
- 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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- Turbine Rotor Nozzle Sealing (AREA)
Abstract
The utility model discloses an adjustable gland seal check bolt clamping device which comprises a gland seal ring which is equipped with an adjusting gasket and a pressure plate. A double-bolt clamping device clamps the pressure plate and the adjusting gasket at the gland seal ring. A spring plate is pressed on the arc section of the gland seal ring. The check bolt clamping device avoids the phenomenon that a single-bolt clamping structure becomes flexible easily, so as to avoid the phenomenon that gland seal gap is changed due to the looseness of the bolt, and the check bolt clamping device ensures the safe operation of a machine set and gets very good effect in practical application.
Description
Technical field
The utility model relates to Turbine Flow Path packing, diaphragm gland and cylinder front and back packing, relates in particular to a kind of adjustable packing backing-up screw securing means.
Background technique
Turbine steam seal is in order to prevent the gas leakage of steam between level and level, and to prevent that steam from spilling cylinder from axle head, reduce the loss of steam, improving Efficiency of Steam Turbine.Packing can be divided into adjustable packing and can not the mode packing.Adjustable packing is a kind of after the packing wearing and tearing, can adjust a kind of packing of labyrinth clearance.Traditional adjustable packing is with a stainless steel screw briquetting and adjustment pad to be fastened on the steam seal ring, by the thickness of adjustment pad, thereby reaches the purpose of adjusting the labyrinth clearance.But in the application process of reality, come fastening adjustment pad and briquetting with a stainless steel screw, the phenomenon that screw loosening often occurs, thereby changing appears in the gap that makes packing, changed the size of labyrinth clearance, cause the mill of drawing between rotor and the gland sealing gear, influenced the operation of unit, and can reduce the working life of packing.
Summary of the invention
The purpose of this utility model is exactly the deficiency at existing adjustable packing technology, and a kind of adjustable packing backing-up screw securing means is provided.
For achieving the above object, the utility model adopts following technical solution:
A kind of adjustable packing backing-up screw securing means, it comprises steam seal ring, is equipped with to adjust pad and pressing plate on steam seal ring, and described pair of screw fastening device is fastened on pressing plate, adjustment pad on the steam seal ring, and spring pressure is on the segmental arc of steam seal ring.
Described pair of screw fastening device comprises pair of screws, and two screw heads are provided with the hole, and it is fastening with both to pass steel wire in the hole.
Adjustable packing backing-up screw securing means of the present utility model comprises spring sheet, steel wire, two screw fastening device, pressing plate, adjustment pad and steam seal ring composition.With two screw fastening devices pressing plate, adjustment pad are fastened on the packing ring recess.Adjust the labyrinth clearance by the thickness of adjusting the adjustment pad between briquetting and the steam seal ring.
Two screw fastening devices are Stainless Steel Wires of wearing φ 1 in the middle of two screws, prevent that screw from getting loose.
The beneficial effects of the utility model are: eliminated when using single screw fastening the phenomenon that screw gets loose easily in the past; When having avoided unit operation simultaneously, the phenomenon that the labyrinth clearance that the labyrinth clearance occurs because of screw loosening changes.
Description of drawings
Fig. 1 is the utility model structural representation.
Among the figure: 1. 3. pairs of screw fastening devices of spring sheet 2. steel wires, 4. pressing plates 5. are adjusted pad 6. steam seal ring.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is described further.
Among Fig. 1, the adjustable packing backing-up screw of the utility model securing means comprises spring sheet 1, steel wire 2, two screw fastening device 3, pressing plate 4, adjusts pad 5, steam seal ring 6.Spring sheet 1 is pressed on steam seal ring 6 segmental arcs, and two screw fastening devices 3 pass pressing plate 4, adjustment pad 5 is fastened on the steam seal ring 6.Two screw fastening devices 3 are made up of with the steel wire 2 that is connected them pair of screws, wherein the head of each screw drills through φ 2 holes, pass φ 2 holes of two two screw fastening device 3 heads with φ 1 steel wire 2, and the steel wire bending is tightened, thereby play the effect that prevents that screw from getting loose.
Claims (2)
1. adjustable packing backing-up screw securing means, it comprises steam seal ring (6), on steam seal ring (6), be equipped with and adjust pad (5) and pressing plate (4), it is characterized in that: described pair of screw fastening device (3) is fastened on pressing plate (4), adjustment pad (5) on the steam seal ring (6), and spring sheet (1) is pressed on the segmental arc of steam seal ring (6).
2. adjustable packing backing-up screw securing means as claimed in claim 1 is characterized in that described pair of screw fastening device (3) comprises pair of screws, and two screw heads are provided with the hole, and it is fastening with both to pass steel wire (2) in the hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200229078U CN201193542Y (en) | 2008-05-22 | 2008-05-22 | Adjustable steam seal lock screw fastening device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200229078U CN201193542Y (en) | 2008-05-22 | 2008-05-22 | Adjustable steam seal lock screw fastening device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201193542Y true CN201193542Y (en) | 2009-02-11 |
Family
ID=40393080
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200229078U Expired - Fee Related CN201193542Y (en) | 2008-05-22 | 2008-05-22 | Adjustable steam seal lock screw fastening device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201193542Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105927292A (en) * | 2016-06-02 | 2016-09-07 | 东方电气集团东方汽轮机有限公司 | Steam seal pressure plate structure with sealing key function |
| CN112524249A (en) * | 2020-12-17 | 2021-03-19 | 东方电气集团东方电机有限公司 | Oil groove sealing structure |
-
2008
- 2008-05-22 CN CNU2008200229078U patent/CN201193542Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105927292A (en) * | 2016-06-02 | 2016-09-07 | 东方电气集团东方汽轮机有限公司 | Steam seal pressure plate structure with sealing key function |
| CN112524249A (en) * | 2020-12-17 | 2021-03-19 | 东方电气集团东方电机有限公司 | Oil groove sealing structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: JI NAN POWER EQUIPMENT FACTORY CO., LTD. |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20110526 Address after: 250100 No. 18 Huaxin Road, Lixia District, Shandong, Ji'nan Co-patentee after: Ji'nan Power Equipment Factory Co., Ltd. Patentee after: Qilu Motor Manufacturing Co., Ltd., Shandong Address before: 250100 No. 18 Huaxin Road, Lixia District, Shandong, Ji'nan Patentee before: Qilu Motor Manufacturing Co., Ltd., Shandong |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090211 Termination date: 20140522 |