CN202493296U - Radial gland seal device of integral type partition plate of turbine - Google Patents
Radial gland seal device of integral type partition plate of turbine Download PDFInfo
- Publication number
- CN202493296U CN202493296U CN2012201038182U CN201220103818U CN202493296U CN 202493296 U CN202493296 U CN 202493296U CN 2012201038182 U CN2012201038182 U CN 2012201038182U CN 201220103818 U CN201220103818 U CN 201220103818U CN 202493296 U CN202493296 U CN 202493296U
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- China
- Prior art keywords
- impeller
- partition plate
- radial
- steam
- plate body
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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.)
- Expired - Fee Related
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- Turbine Rotor Nozzle Sealing (AREA)
Abstract
The utility model discloses a radial gland seal device of an integral type partition plate of a turbine, comprising a moving blade, a fixed blade, a partition plate body and an impeller, wherein the fixed blade is welded on a shroud ring and then arranged on the partition plate body; the moving blade is arranged on the top of the impeller; a gap is positioned between the moving blade and the fixed blade so as to form a steam flow passage; the steam admission side of the top of the impeller is provided with a protruded halfpace; the upper part of the partition plate body is provided with a groove matched with the protruded halfpace positioned on the top of the impeller; and a radial gland seal sheet is arranged below the groove along the radial direction of the partition plate body. According to the utility model, the radial gland seal sheet is arranged on the partition plate body, a gap positioned between the groove of the partition plate body and the protruded halfpace of the impeller is sealed to realize the radial gland seal between the partition plate body and the impeller, and then an axial gap can be amplified and a radial gap can be reduced to achieve sealing effect, and therefore, the steam loss of a steam passage is reduced to minimum and a main steam flow of the turbine is more less interfered.
Description
Technical field
The utility model relates to a kind of sealing gland, relates in particular to a kind of steam turbine integrated type dividing plate radial gland device.
Background technique
In the Design of Steam Turbine, the collision for fear of steam turbine sound part has generally increased axial clearance in modern times; But the increase of axial clearance causes the axial packing effect of blade steam admission side root to reduce greatly; The steam passage Steam loss increases, and disturbs flowing of main steam flow, has reduced overall efficiency.For the influence that reduces to bring because of the axial clearance increase, extensively adopted the dividing plate radial gland in the Design of Steam Turbine now, as shown in Figure 1.Adopt radial gland shown in Figure 1, reduced the radial clearance of packing to a certain extent, played the effect of sealing, still, effect is not very desirable, still has some steam flows to flow out, and steam turbine master steam flow has been caused influence.
Summary of the invention
To above-mentioned existing technology, the utility model provides a kind of novel steam turbine integrated type dividing plate radial gland device, and it is simple in structure, and is easy to process, and sealing effect is good, can improve through-flow efficient.
The utility model is realized through following technological scheme:
A kind of steam turbine integrated type dividing plate radial gland device; Comprise moving vane, stator blade, partition body and impeller, stator blade is welded and after on the shroud, is contained on the partition body, and moving vane is contained in the impeller top; Thereby exist the gap to form the passage of steam flow between moving vane and the stator blade; Impeller top steam admission side is provided with the halfpace of protrusion, and partition body top is provided with the groove that matches with the halfpace of impeller top protrusion, and the groove below radially is provided with radial spill strip along partition body.
The utility model is employed in radial spill strip is set on the partition body, and the gap between the halfpace of groove on the partition body and impeller protrusion is sealed, and realizes the radial gland between partition body and impeller; Can when amplifying axial clearance, dwindle radial clearance like this, reaching the effect of sealing, thereby make the Steam loss of steam passage drop to minimum; This kind setting design more of the prior art, better tightness, the Steam loss of steam passage is littler; Interference to steam turbine master steam flow is littler; Also more help improving the start and stop performance of unit, shorten the start-stop time of unit, and compact structure, easy to process.
Description of drawings
Fig. 1 is the structural representation of steam turbine integrated type dividing plate radial gland device of the prior art.
Fig. 2 is the structural representation of the steam turbine integrated type dividing plate radial gland device of the utility model.
Wherein, 1, stator blade; 2, radial spill strip; 3, groove; 4, partition body; 5, moving vane; 6, halfpace; 7, impeller; 8, platform.
Embodiment
Below in conjunction with accompanying drawing the utility model is further described.
A kind of steam turbine integrated type dividing plate radial gland device; Comprise moving vane 5, stator blade 1, partition body 4 and impeller 7; Stator blade 1 is welded and after on the shroud, is contained on the partition body 4, and moving vane 5 is contained in impeller 7 tops, thereby exists the gap to form the passage of steam flow between moving vane 5 and the stator blade 1; As shown in Figure 2; Impeller 7 top steam admission sides are provided with the halfpace 6 of protrusion, and partition body 4 tops are provided with the groove 3 that matches with the halfpace 6 of impeller 7 tops protrusion, and groove 3 belows radially are provided with radial spill strip 2 along partition body 4.
The utility model is employed in radial spill strip 2 is set on the partition body 4, and the gap of 6 of the halfpaces of the groove on the partition body 43 and impeller 7 protrusions is sealed, and realizes the radial gland of 7 in partition body 4 and impeller; Can when amplifying axial clearance, dwindle radial clearance like this, reaching the effect of sealing, thereby make the Steam loss of steam passage drop to minimum; This kind setting design more of the prior art is (as shown in Figure 1; Impeller 7 top steam admission sides are provided with the platform 8 of protrusion), better tightness, the Steam loss of steam passage is littler; Interference to steam turbine master steam flow is littler; Also more help improving the start and stop performance of unit, shorten the start-stop time of unit, and compact structure, easy to process.
Claims (1)
1. steam turbine integrated type dividing plate radial gland device; Comprise moving vane, stator blade, partition body and impeller, stator blade is welded and after on the shroud, is contained on the partition body, and moving vane is contained in the impeller top; Thereby exist the gap to form the passage of steam flow between moving vane and the stator blade; It is characterized in that: said impeller top steam admission side is provided with the halfpace of protrusion, and partition body top is provided with the groove that matches with the halfpace of impeller top protrusion, and the groove below radially is provided with radial spill strip along partition body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201038182U CN202493296U (en) | 2012-03-19 | 2012-03-19 | Radial gland seal device of integral type partition plate of turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201038182U CN202493296U (en) | 2012-03-19 | 2012-03-19 | Radial gland seal device of integral type partition plate of turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202493296U true CN202493296U (en) | 2012-10-17 |
Family
ID=46999530
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201038182U Expired - Fee Related CN202493296U (en) | 2012-03-19 | 2012-03-19 | Radial gland seal device of integral type partition plate of turbine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202493296U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111911243A (en) * | 2020-08-24 | 2020-11-10 | 中国长江动力集团有限公司 | Partition board assembled end steam seal structure |
-
2012
- 2012-03-19 CN CN2012201038182U patent/CN202493296U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111911243A (en) * | 2020-08-24 | 2020-11-10 | 中国长江动力集团有限公司 | Partition board assembled end steam seal structure |
| CN111911243B (en) * | 2020-08-24 | 2024-05-28 | 中国长江动力集团有限公司 | Baffle assembled tip vapor seal structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121017 Termination date: 20210319 |