CN201778841U - Axial slanting brush type vapor seal ring - Google Patents
Axial slanting brush type vapor seal ring Download PDFInfo
- Publication number
- CN201778841U CN201778841U CN2010205228469U CN201020522846U CN201778841U CN 201778841 U CN201778841 U CN 201778841U CN 2010205228469 U CN2010205228469 U CN 2010205228469U CN 201020522846 U CN201020522846 U CN 201020522846U CN 201778841 U CN201778841 U CN 201778841U
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- seal ring
- axial
- bristle
- vapor seal
- clamping plate
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Abstract
The utility model relates to an axial slanting brush type vapor seal ring, which is used for shaft seal of a steam turbine and vapor seal of a partition plate and belongs to the technical field of vapor seal devices. The traditional axial vertical type vapor seal ring causes wearout failure of a rotor part of a machine set easily and causes the machine set to vibrate easily, which brings about potential safety hazards. In the axial slanting brush type vapor seal ring provided by the utility model, because bristles are arranged to incline with a rotor axially and radially and new bristle materials are selected at the same time, the influence of the vapor seal on the rotor of the steam turbine is overcome, the safety of the machine set operation is ensured, and better economic benefit is also created. Meanwhile, the structure ensures that the turbine has very obvious energy-saving effect and makes greater contributions to energy saving and emission reduction in China.
Description
[technical field]
The utility model is a kind of axial tilting brush steam seal ring, is used for turbine shaft seal, diaphragm gland, belongs to the sealing gland technical field.
[background technique]
The brush steam seal ring is a kind of flexible sealing structure, has sealing and stability efficiently.At present, domestic part small hydropower station steam turbine has begun to adopt the brush steam seal ring to carry out leakage test.My company be domestic first the brush steam seal ring is incorporated into power plant in the large-scale coal-fired unit.2008, my company is in certain major overhaul, make conventional comb-shaped vapour axle envelope into axially vertical brush steam seal ring first, be about to certain tooth in the middle of the labyrinth ring and make the metal bristle made by nickel-bass alloy material into, bristle and steam flow direction (with rotor axial in the same way) vertical, obtained good effect.Through unit operation in a few years, we find that the brush steam seal ring of this pattern is selected to have some unreasonable parts in structural design and material.Because bristle is vertical the contact with the machine group rotor, add that the machine group rotor is a kind of dynamic balance in running state, bristle and unit gap between rotor are very little, unit is in actual motion, bristle is often understood and the machine group rotor bumps mill, and the nickel-bass alloy material bristle closeness and the hardness that adopt are all higher, so the bristle of this pattern is as steel disc, when bumping mill, easily the machine group rotor is caused wearing and tearing with the machine group rotor, cause the vibration of unit, make unit operation produce potential safety hazard.Be arranged vertically simultaneously and also easily cause the brush steam seal deleterious.And if amplify in the gap between bristle and the axle, can cause inter-stage sealing variation again, cause gas leakage, cause bigger waste, can not produce favorable economic benefit.
[model utility content]
Easily the machine set of rotor members is caused wear out failure in order to overcome existing axially vertical brush steam seal, cause very easily that also the deficiency of vibration takes place unit.The utility model provides a kind of axial tilting brush steam seal ring, by bristle being arranged to tilt with steam flow direction (rotor axial), select novel bristle (cobalt-based material) material simultaneously for use, solved of the influence of former vertical brush steam seal preferably to turbine rotor, guarantee the Security that brush steam seal is used the back unit operation, also created economic benefit preferably.For this reason, the utility model is by the following technical solutions:
Axial tilting brush steam seal ring, comprise ringwise labyrinth casing, at the fixing some sealing teeth that are arranged in parallel in the inboard of labyrinth casing, described sealing tooth is perpendicular to the bearing of trend and the steam flow direction of tooth top from tooth root, inboard at labyrinth casing also is provided with bristle, described bristle is made up of compact arranged wire, it is characterized in that: described bristle has axial angle from root between the bearing of trend at top and steam flow direction, and axially the size of angle is 45 degree-90 degree.Form the bristle of leaning structure, in case with rotor the mill that bumps of moment is arranged, because bristle is easy to generate elasticity to rotor, the surface is puted forth effort will be much smaller than the structure of former vertical in form, alleviate greatly rotor is caused wearing and tearing, eliminated the destabilizing factor that unit uses brush steam seal to vibrate easily.
Axial tilting brush steam seal ring is characterized in that: described bristle adopts Co-base alloy material.Though Co-base alloy material a little less than nickel-bass alloy material, can meet the requirements fully in the vapor (steam) temperature scope of present coal machine, and cobalt base alloy is softer relatively, can not damage rotor part on oxidation resistance, and the brush silk is not easy distortion.
Axial tilting brush steam seal ring, it is characterized in that: described bristle both sides are respectively equipped with clamping plate that are embedded in the labyrinth casing inboard obliquely, i.e. first clamping plate and second clamping plate, the height of described clamping plate is less than the height of bristle, and the height of first clamping plate is greater than the height of second clamping plate.Two clamping plates is set, its objective is to guarantee that bristle being subjected to still keeping certain rigid after axle and the steam flow impact force, keeps the angle of bristle.
Axial tilting brush steam seal ring is characterized in that: the size of described axial angle is 60 degree.This angle can guarantee that bristle has certain rigid, can not cause serious injury to turbine rotor again.
Axial tilting brush steam seal ring is characterized in that: the inboard, two end part of described labyrinth casing is respectively equipped with left side sealing tooth and right sealing tooth, and described bristle is between labyrinth casing inboard left side sealing tooth and right sealing tooth.
Axial tilting brush steam seal ring is characterized in that: have the inclination angle between the radius of described bristle and labyrinth casing.Its effect is when axle rotates, and alleviates bristle stressed to axle, thereby guarantees that the corresponding axle journal of bristle place can not cause noticeable wear.
Axial tilting brush steam seal ring, it is characterized in that: described labyrinth casing is formed by connecting by the body section that plurality of sections is circular arc.This design is convenient to install.
The axial tilting brush steam seal that the utility model provides, with bristle be arranged to rotor axially and radially twoly tilt, select new bristle material simultaneously for use, solved of the influence of former vertical brush steam seal to turbine rotor, guarantee the Security that brush steam seal is used the back unit operation, also created economic benefit preferably.Simultaneously, the transformation by gland seal structure makes the Saving energy in Steam Turbine effect very obvious, and bigger contribution is made in the energy-saving and emission-reduction that can be country.
[description of drawings]
Fig. 1 is the utility model end view drawing.
Fig. 2 is the utility model longitudinal section view.
Fig. 3 is the utility model stereogram.
Among the figure: 1. bristle; 2. labyrinth casing; 3. spool (rotor); 4. first clamping plate; 5. second clamping plate; 6. sealing tooth; A. a left side seals tooth; C. right sealing tooth; α. axial angle; β. the inclination angle; The direction of arrow is the steam flow direction.
[embodiment]
Below in conjunction with specification drawings and specific embodiments substantive distinguishing features of the present utility model is further described.
As Fig. 1, Fig. 2 and axial tilting brush steam seal ring shown in Figure 3, comprise ringwise labyrinth casing 2, every grade of packing is formed by connecting by six sections labyrinth casings 2.Fix 8 sealing teeth 6 that are arranged in parallel in the inboard of labyrinth casing 2, described sealing tooth 6 is perpendicular to the bearing of trend of tooth top and steam flow direction (direction of arrow is the steam flow direction among the figure, with rotor direction in the same way) from tooth root.Inboard, labyrinth casing 2 two end part is respectively equipped with left side sealing tooth A and right sealing tooth C, also be provided with bristle 1 at left side sealing tooth A and right sealing tooth C neutral position, (Φ 0.06～0.08mm) is made up of compact arranged cobalt base alloy silk bristle, and the assemblage gap of cobalt base alloy silk is 0～0.05mm.Bristle 1 is 60 degree angles from root between the bearing of trend at top and steam flow direction.Has angle of inclination beta between the radius of bristle 1 and labyrinth casing 2.The height of bristle 1 is not higher than the sealing tooth 6 of adjacent position.Bristle 1 both sides are respectively equipped with clamping plate that are embedded in labyrinth casing 2 inboards obliquely, i.e. first clamping plate 4 and second clamping plate 5, and the height of described clamping plate is less than the height of bristle 1, and the height of first clamping plate 4 is greater than the height of second clamping plate 5.
Claims (7)
1. axial tilting brush steam seal ring, comprise ringwise labyrinth casing (2), at the fixing some sealing teeth (6) that are arranged in parallel in the inboard of labyrinth casing (2), described sealing tooth (6) is perpendicular to the bearing of trend and the steam flow direction of tooth top from tooth root, also be provided with bristle (1) in the inboard of labyrinth casing (2), described bristle (1) is made up of compact arranged wire, it is characterized in that: described bristle (1) has axial angle (α) from root between the bearing of trend at top and steam flow direction, and axially the size of angle (α) is 45 degree-90 degree.
2. axial tilting brush steam seal ring according to claim 1 is characterized in that: described bristle (1) adopts Co-base alloy material.
3. axial tilting brush steam seal ring according to claim 2, it is characterized in that: described bristle (1) both sides are respectively equipped with one and are embedded in the inboard clamping plate of labyrinth casing (2) obliquely, i.e. first clamping plate (4) and second clamping plate (5), the height of described clamping plate is less than the height of bristle (1), and the height of first clamping plate (4) is greater than the height of second clamping plate (5).
4. axial tilting brush steam seal ring according to claim 3 is characterized in that: the size of described axial angle (α) is 60 degree.
5. axial tilting brush steam seal ring according to claim 4, it is characterized in that: the inboard, two end part of described labyrinth casing (2) is respectively equipped with left side sealing tooth (A) and right sealing tooth (C), and described bristle (1) is positioned between labyrinth casing (2) inboard left side sealing tooth (A) and the right sealing tooth (C).
6. axial tilting brush steam seal ring according to claim 5 is characterized in that: have inclination angle (β) between the radius of described bristle (1) and labyrinth casing (2).
7. axial tilting brush steam seal ring according to claim 6, it is characterized in that: described labyrinth casing (2) is formed by connecting by the body section that plurality of sections is circular arc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205228469U CN201778841U (en) | 2010-09-08 | 2010-09-08 | Axial slanting brush type vapor seal ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205228469U CN201778841U (en) | 2010-09-08 | 2010-09-08 | Axial slanting brush type vapor seal ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201778841U true CN201778841U (en) | 2011-03-30 |
Family
ID=43792054
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205228469U Expired - Fee Related CN201778841U (en) | 2010-09-08 | 2010-09-08 | Axial slanting brush type vapor seal ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201778841U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102425461A (en) * | 2011-12-27 | 2012-04-25 | 中国燃气涡轮研究院 | Low-hysteresis reeled and fixed brush type sealing device |
| CN106761960A (en) * | 2017-03-21 | 2017-05-31 | 江苏透平电力技术有限公司 | A kind of industrial gas turbine tail pipe brush sealing gland and its manufacture method |
| CN108488388A (en) * | 2018-04-27 | 2018-09-04 | 西安丁杰动力科技有限公司 | A kind of high temperature and high pressure gas surface of revolution dynamic sealing device |
| CN112177690A (en) * | 2019-07-03 | 2021-01-05 | 智伟电力(无锡)有限公司 | Novel self-adjusting spring type vapor seal |
-
2010
- 2010-09-08 CN CN2010205228469U patent/CN201778841U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102425461A (en) * | 2011-12-27 | 2012-04-25 | 中国燃气涡轮研究院 | Low-hysteresis reeled and fixed brush type sealing device |
| CN106761960A (en) * | 2017-03-21 | 2017-05-31 | 江苏透平电力技术有限公司 | A kind of industrial gas turbine tail pipe brush sealing gland and its manufacture method |
| CN108488388A (en) * | 2018-04-27 | 2018-09-04 | 西安丁杰动力科技有限公司 | A kind of high temperature and high pressure gas surface of revolution dynamic sealing device |
| CN112177690A (en) * | 2019-07-03 | 2021-01-05 | 智伟电力(无锡)有限公司 | Novel self-adjusting spring type vapor seal |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110330 Termination date: 20120908 |