CN201521318U - Combined seal for steam turbine - Google Patents
Combined seal for steam turbine Download PDFInfo
- Publication number
- CN201521318U CN201521318U CN2009202166792U CN200920216679U CN201521318U CN 201521318 U CN201521318 U CN 201521318U CN 2009202166792 U CN2009202166792 U CN 2009202166792U CN 200920216679 U CN200920216679 U CN 200920216679U CN 201521318 U CN201521318 U CN 201521318U
- Authority
- CN
- China
- Prior art keywords
- seal
- steam turbine
- ring body
- sealing
- seal ring
- 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 - Lifetime
Links
- 238000007789 sealing Methods 0.000 claims abstract description 80
- 239000002131 composite material Substances 0.000 claims description 21
- 230000007935 neutral effect Effects 0.000 claims description 10
- 210000004907 gland Anatomy 0.000 claims description 9
- 241000276425 Xiphophorus maculatus Species 0.000 claims description 6
- 230000000694 effects Effects 0.000 abstract description 9
- 238000013461 design Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 4
- 238000009434 installation Methods 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 238000005728 strengthening Methods 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 10
- 230000009286 beneficial effect Effects 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Images
Landscapes
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
The utility model discloses a combined seal for a steam turbine, which relates to the technical field of a steam turbine sealing device and adopts key technique of 'adding a seal brush to realize a combined seal'. The upper end face of a seal ring body is integrated with seal teeth into a whole, an embedding groove is disposed in the middle position of the upper end face of the seal ring body and connected with a seal brush bristle sleeve in an embedding manner, and the seal brush bristle sleeve is connected to seal brush bristles in an embedding manner. The seal teeth has the same height with the seal brush bristle sleeve, while the height of the seal brush bristles is higher than that of the seal brush bristle sleeve. The seal ring body is fixedly connected to a steam seal cover of the steam turbine and used for airtight seal of the steam turbine. The combined seal has the advantages of being formed by combining a fixing seal of the prior art and a newly added flexible strengthening seal, realizing optimal seal effect of a rotor and a stator of the steam turbine, and having scientific, rational, simple and clever design, convenient installation and utilization, evident, stable and reliable effect, and convenient manufacturing with low cost, and favoring popularized utilization.
Description
Technical field
The utility model steam turbine composite seal relates to steam turbine seal arrangement technical field; Be particularly related to the technical field that the rotor and the stator of steam turbine are implemented sealing; Be specifically related to steam turbine composite seal technical field.
Background technique
With regard to steam turbine, always gapped between the rotor of steam turbine and stator.In order to prevent that working medium from passing through clearance leakage, sealing will be arranged.The leakage of working medium brings energy loss.Leakage loss is the important component part of steam turbine internal losses, normally 1/4 of internal losses.Reduce the internal efficiency that leakage loss can increase substantially steam turbine, particularly last 20 years through 20th century, the flow passage component of steam turbine has had many improvement under the promotion of computational fluid mechanics, performance has increased significantly, and reduces leakage loss and more becomes the important measures that improve turbine efficiency.Tradition labyrinth gland is a kind of contactless rigid seal, and the gap reduces, gland sealing gear will be after bumping mill with rotor quick-wearing very, but also can bring safety problem because of two rigid bodies bump to grind.In addition, because structural limitations, tradition labyrinth gland can not guarantee design gaps fully in actual motion, because startup of unit is critical excessively, unusual vibration exceeding the standard, even because operations staff's operate miss etc. all might make gland sealing gear cause permanent wearing and tearing, and seal clearance also are multiplied.Professional knowledge based on claimant and designer reaches the excelsior unremitting pursue of cause with the working experience of enriching, on conscientious and sufficient investigation, understanding, analysis, the existing known technology basis of summary, the utility model is succeeded in developing with the key technology of " set up the sealing brush and realize compound seal ".
The model utility content
The utility model is taked " setting up the sealing brush and the realization compound seal " key technology, the upper-end surface of its seal ring body is set to one with the sealing tooth, the neutral position, upper-end surface of described seal ring body is provided with embedding groove, the described embedding groove that neutral position, described seal ring body upper-end surface is provided with is inlayed with sealing bristle cover and is connected, and sealing bristle cover is inlayed with the sealing bristle and is connected.The sealing tooth is consistent with the height of sealing bristle cover, and the height of sealing bristle is higher than the height of sealing bristle cover.Seal ring body is fixedlyed connected with the gland sleeve of steam turbine.
The purpose of this utility model is: make and realize best sealing effect between the rotor of steam turbine and the stator.The utility model can accomplish the end in view.
For achieving the above object, the technological scheme that provides of the utility model is:
A kind of steam turbine composite seal comprises the sealing tooth that is provided with on seal ring body, the seal ring body, also is provided with embedding groove on the seal ring body, also is provided with sealing bristle cover, sealing bristle;
Described steam turbine composite seal, the upper-end surface of its seal ring body is set to one with the sealing tooth, the neutral position, upper-end surface of its described seal ring body is provided with embedding groove, the described embedding groove that its neutral position, described seal ring body upper-end surface is provided with is inlayed with sealing bristle cover and is connected, and its sealing bristle cover is inlayed with the sealing bristle and is connected.
Described steam turbine composite seal, described seal ring body is that the cross section is inverted I-shaped structure, the sealing tooth that is provided with on the described seal ring body is that the cross section is anti-L shaped platy structure, the embedding groove that is provided with on the described seal ring body is the shape of groove, the platy structure that described sealing bristle cover takes the shape of the letter U for the cross section, described sealing bristle is a wire brush shape structure.
Described steam turbine composite seal, described sealing tooth is consistent with the height of sealing bristle cover, and the height of described sealing bristle is higher than the height of sealing bristle cover.
Described steam turbine composite seal, described seal ring body is fixedlyed connected with the gland sleeve of steam turbine.
Working principle of the present utility model and working procedure are: the purpose of this utility model is to make to realize the optimal seal effect between the rotor of steam turbine and the stator, reduce the leakage of working medium to greatest extent.1., the sealing tooth is consistent with the height of sealing bristle cover after seal ring body in the utility model and turbine steam seal cover is fixedly connected:, the inherent structure that has kept existing known technology, constitute intrinsic rotor of existing known technology and the gap between the stator, also just kept the intrinsic sealing effect of existing known technology simultaneously, can be referred to as the intrinsic sealing of known technology; 2., the utility model has also been newly established the sealing brush of being made up of sealing bristle cover and sealing bristle, can realize that the dynamic flexible that seals bristle closely contacts, reach the purpose of further enforcement sealing, realized the effect of reinforced seal, can be referred to as flexible reinforced seal; Intrinsic sealing by existing known technology constitutes organically composite seal jointly with the flexible reinforced seal of newly establishing.Design science of the present utility model is rationally and simply ingenious, easy to install, effect is remarkable and reliable and stable.
Owing to adopted technological scheme provided by the utility model; Because working principle of the present utility model and working procedure are described; Because the upper-end surface of seal ring body described in the utility model is set to one with the sealing tooth, the neutral position, upper-end surface of seal ring body is provided with embedding groove, the described embedding groove that neutral position, seal ring body upper-end surface is provided with is inlayed with sealing bristle cover and is connected, sealing bristle cover is inlayed with the sealing bristle and is connected, the sealing tooth is consistent with the height of sealing bristle cover, the height of sealing bristle is higher than the height of sealing bristle cover, and seal ring body is fixedlyed connected with the gland sleeve of steam turbine; Because the utility model constitutes composite seal by the intrinsic sealing of existing known technology jointly with the flexible reinforced seal of newly establishing; Thereby compare with existing known technology, the beneficial effect of acquisition is: make between the rotor of steam turbine and the stator and realized best sealing effect.Simultaneously, the utility model have also that design science is rationally and simply ingenious, easy to install, effect is remarkable and reliable and stable, low, as the to be beneficial to wide popularization and application characteristics of being convenient to be made.
Description of drawings
Fig. 1 is the generalized section of the utility model embodiment structure.
Fig. 2 is the generalized section of seal ring body in the utility model embodiment.Be mainly the embedding groove that is provided with on the embodiment seal ring body with this figure.
Label among the figure: 1, seal ring body, 101, the sealing tooth, 102, embedding groove, 2, sealing bristle cover, 3, the sealing bristle.
Embodiment
Below in conjunction with Figure of description, the utility model is described in detail.Shown in Figure of description: a kind of steam turbine composite seal, comprise the sealing tooth 101 that is provided with on seal ring body 1, the seal ring body 1, also be provided with embedding groove 102 on the seal ring body 1, also be provided with sealing bristle cover 2, sealing bristle 3;
Described steam turbine composite seal, the upper-end surface of its seal ring body 1 is set to one with sealing tooth 101, the neutral position, upper-end surface of its described seal ring body 1 is provided with embedding groove 102, the described embedding groove 102 that its neutral position, described seal ring body 1 upper-end surface is provided with is inlayed with sealing bristle cover 2 and is connected, its sealing bristle cover 2 with seal bristle 3 and inlay and be connected.
Described steam turbine composite seal, described seal ring body 1 is inverted I-shaped structure for the cross section, the sealing tooth 101 that is provided with on the described seal ring body 1 is anti-L shaped platy structure for the cross section, the embedding groove 102 that is provided with on the described seal ring body 1 is the shape of groove, the platy structure that described sealing bristle cover 2 takes the shape of the letter U for the cross section, described sealing bristle 3 is a wire brush shape structure.
Described steam turbine composite seal, described sealing tooth 101 is consistent with the height of sealing bristle cover 2, and the height of described sealing bristle 3 is higher than the height of sealing bristle cover 2.
Described steam turbine composite seal, described seal ring body 1 is fixedlyed connected with the gland sleeve of steam turbine.
The utility model has carried out property on probation examination after making and finishing, and has also done corresponding comparative trial at the steam turbine operation state.At the test rotor at 3000RPM, linear velocity 122m/s, the about 0.4Mpa of pressure reduction, under the situation of running clearance 0.38mm, adopt single brush seal after, compare with seven tooth ladder labyrinth seals, reveal minimizing 76%; A dental transition of labyrinth seal is changed to sealing brush described in the utility model, has constituted described composite seal, it is revealed and reduces closely 87% than independent labyrinth seal, has obtained the good result of expection.
Being preferred embodiment of the present utility model only below, is not that the utility model is done any pro forma restriction; But all industry those of ordinary skill are all implemented the utility model with the above shown in the by specification accompanying drawing swimmingly; In every case the change of making not breaking away from technical solutions of the utility model, modification and differentiation are equivalent embodiment of the present utility model, all still belong to the protection domain of technical solutions of the utility model.
Claims (4)
1. steam turbine composite seal, comprise the sealing tooth (101) that seal ring body (1), seal ring body (1) upward are provided with, it is characterized in that: also be provided with embedding groove (102) on the seal ring body (1), also be provided with sealing bristle cover (2), sealing bristle (3);
Described steam turbine composite seal, the upper-end surface of its seal ring body (1) is set to one with sealing tooth (101), the neutral position, upper-end surface of its described seal ring body (1) is provided with embedding groove (102), the described embedding groove (102) that its described seal ring body (1) neutral position, upper-end surface is provided with is inlayed with sealing bristle cover (2) and is connected, and its sealing bristle cover (2) is inlayed with sealing bristle (3) and is connected.
2. steam turbine composite seal according to claim 1, it is characterized in that: described seal ring body (1) is inverted I-shaped structure for the cross section, described seal ring body (1) is gone up the sealing tooth (101) that is provided with and is anti-L shaped platy structure for the cross section, it is the shape of groove that described seal ring body (1) is gone up the embedding groove (102) that is provided with, the platy structure that described sealing bristle cover (2) takes the shape of the letter U for the cross section, described sealing bristle (3) are wire brush shape structure.
3. steam turbine composite seal according to claim 1 is characterized in that: described sealing tooth (101) is consistent with the height of sealing bristle cover (2), and the height of described sealing bristle (3) is higher than the height of sealing bristle cover (2).
4. steam turbine composite seal according to claim 1 is characterized in that: described seal ring body (1) is fixedlyed connected with the gland sleeve of steam turbine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202166792U CN201521318U (en) | 2009-09-15 | 2009-09-15 | Combined seal for steam turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202166792U CN201521318U (en) | 2009-09-15 | 2009-09-15 | Combined seal for steam turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201521318U true CN201521318U (en) | 2010-07-07 |
Family
ID=42507495
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202166792U Expired - Lifetime CN201521318U (en) | 2009-09-15 | 2009-09-15 | Combined seal for steam turbine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201521318U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102926972A (en) * | 2011-08-08 | 2013-02-13 | 通用电气公司 | Seal assembly and method for flowing hot gas in a turbine |
| CN103883363A (en) * | 2014-04-02 | 2014-06-25 | 江苏透平密封高科技有限公司 | Non-contact type brush-type seal and manufacturing method thereof |
-
2009
- 2009-09-15 CN CN2009202166792U patent/CN201521318U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102926972A (en) * | 2011-08-08 | 2013-02-13 | 通用电气公司 | Seal assembly and method for flowing hot gas in a turbine |
| CN103883363A (en) * | 2014-04-02 | 2014-06-25 | 江苏透平密封高科技有限公司 | Non-contact type brush-type seal and manufacturing method thereof |
| CN103883363B (en) * | 2014-04-02 | 2015-10-28 | 江苏透平密封高科技股份有限公司 | A kind of contactless brush seal and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201521318U (en) | Combined seal for steam turbine | |
| CN101660430A (en) | Telescopic brush type gland ring | |
| CN201209586Y (en) | Mechanical sealing device for high-pressure water filling pump | |
| CN201202576Y (en) | Bucket impulse turbine | |
| CN209324437U (en) | A kind of steam turbine shaft end combination sealing gland | |
| CN204921361U (en) | Long -life is slide bearing for gear pump | |
| CN109236383A (en) | A kind of steam turbine shaft end combination sealing gland | |
| CN203161303U (en) | Self-adjusting honeycomb brush type dynamic steam seal | |
| CN205895687U (en) | Impeller subassembly in deep -well pump | |
| CN201651315U (en) | Composite mechanical seal device | |
| CN205578042U (en) | Brush seal subassembly | |
| CN203161299U (en) | Pressure-adjusting brush type steam seal | |
| CN204827798U (en) | Screw thread valve spring island reef sea wind power generation system | |
| CN202768843U (en) | Sand erosion resistant water turbine main shaft seal mechanism | |
| CN201802630U (en) | Vertical centrifugal pump with water guide hole | |
| CN201318312Y (en) | Water-filling submersible electric pump | |
| CN2841996Y (en) | Water turbine contactless sealing device | |
| CN201772059U (en) | Closed mechanical sealing device | |
| CN204628396U (en) | A kind of flange valve is by appointing spring sea wind generation platform | |
| CN201433733Y (en) | Radial packing box device for oil-pumping well head in oil field | |
| CN204627872U (en) | A kind of dog valve spring islands and reefs wind power plant | |
| CN212359871U (en) | Novel side tooth brush type steam seal | |
| CN2550524Y (en) | Water guide blade of self pressure leakage stop water turbine | |
| CN210889039U (en) | Spiral-flow type broach vapor seal | |
| CN101586519A (en) | Water-wheel type pulse pump and water turbine generator for same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160111 Address after: 410007 No. 2, Yong Town Road, Liuyang manufacturing industry base, Changsha, Hunan, Hunan Patentee after: Hunan Datang Energy-Saving Science & Technology Co., Ltd. Address before: 100053 Beijing City, Xuanwu District Guanganmen Avenue 338 CTS building room 805 Patentee before: Zhongjiehuan (Beijing) Technology Co., Ltd. Patentee before: Hunan Datang Energy-Saving Science & Technology Co., Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20100707 |
|
| CX01 | Expiry of patent term |