CN202300537U - Low-tooth brush type vapor seal - Google Patents
Low-tooth brush type vapor seal Download PDFInfo
- Publication number
- CN202300537U CN202300537U CN2011203723894U CN201120372389U CN202300537U CN 202300537 U CN202300537 U CN 202300537U CN 2011203723894 U CN2011203723894 U CN 2011203723894U CN 201120372389 U CN201120372389 U CN 201120372389U CN 202300537 U CN202300537 U CN 202300537U
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- China
- Prior art keywords
- brush
- mentioned
- low
- vapor seal
- steam seal
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- Expired - Lifetime
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- 239000011159 matrix material Substances 0.000 claims abstract description 17
- 239000000956 alloy Substances 0.000 claims description 3
- 229910045601 alloy Inorganic materials 0.000 claims description 3
- 238000007789 sealing Methods 0.000 abstract description 4
- 239000000463 material Substances 0.000 abstract description 3
- 230000001680 brushing effect Effects 0.000 abstract 6
- 239000011295 pitch Substances 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 6
- 238000012856 packing Methods 0.000 description 4
- 210000004907 gland Anatomy 0.000 description 3
- 230000007812 deficiency Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 230000001131 transforming effect Effects 0.000 description 1
Images
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- Turbine Rotor Nozzle Sealing (AREA)
- Sealing Devices (AREA)
Abstract
The utility model discloses a low-tooth brush type vapor seal, which comprises a vapor seal ring matrix, and is characterized by also comprising a brushing wire assembly which is fixedly connected with the vapor seal ring matrix; the vapor seal ring matrix is provided with a plurality of high teeth for sealing and a plurality of low teeth among the high teeth; a fixed groove is formed in one or more of low teeth; and the brushing wire assembly is fixed in the fixed groove. The low-tooth brush type vapor seal has the advantages that: the position of the brushing wire assembly is not influenced by a circular arc inner diameter and a structure of the vapor seal, so that the brushing wire assembly can be arranged on any low teeth; the brushing wire assembly on the low teeth is not influenced by axial adjacent tooth pitches and differential expansion, and potential safety hazards are few; and the consumption of brushing wires and baffle materials is reduced, so that cost is saved.
Description
Technical field
The utility model relates to a kind of brush seal that is used for the relative movement part sealing, is specifically related to a kind of low tooth brush steam seal that is mainly used between turbine rotor and the stator.
Background technique
Turbine rotor and stator are equipped with packing, and classical gland seal structure is a labyrinth gland, and promptly rotor is processed into concaveconvex structure, and packing adopts the stage teeth structure to match with it, and both leave certain interval at cooperation.Steam flows to low voltage side from the high pressure side.When steam was regional through the packing crown, because flow area diminishes, steam flow rate increased, and pressure reduces; When steam got between cog annular steam chest, it is big that flow area becomes suddenly, and steam flow turns to, and produces eddy current, and pressure reduces step by step, reaches sealing effect.In the steam turbine actual motion; Because rotor is the cylinder factors such as uneven abnormal deformation of being heated when crossing critical speed of rotation high vibration and variable working condition; Traditional labyrinth gland is easy to of short duration bumping mill and cause nonvolatil gap enlargement takes place, and causes leakage rate to increase, and influences unit economy.In order to remedy the deficiency of existing labyrinth air seal; Developed the brush seal that on the labyrinth air seal basis, forms now; But existing brush seal often exists owing to the adjacent high tooth tooth pitch and the potential safety hazard that problem caused of differential expansion, and this potential safety hazard tends to cause very serious fault.
The model utility content
Be to solve the deficiency of existing technology, the purpose of the utility model is to provide a kind of low tooth brush steam seal of the Security of unit that improves when having excellent sealability.
To achieve these goals, the utility model adopts following technological scheme:
Low tooth brush steam seal comprises: the steam seal ring matrix, it is characterized in that, and also comprise: the brush silk assembly that is fixedly connected with above-mentioned steam seal ring matrix; Above-mentioned steam seal ring matrix is provided with a plurality of high tooth that is used to seal and a plurality of low tooth between the above-mentioned high tooth; In the above-mentioned low tooth one or several is provided with fixed groove, and above-mentioned brush silk assembly is fixed in the said fixing groove.
Aforesaid low tooth brush steam seal is characterized in that, above-mentioned brush silk assembly comprises: front screen that is used to reinforce and backboard, be arranged on the brush tow between above-mentioned front screen and the backboard.
Aforesaid low tooth brush steam seal is characterized in that above-mentioned front screen is lower than above-mentioned backboard, and above-mentioned backboard is lower than above-mentioned brush tow.
Aforesaid low tooth brush steam seal is characterized in that above-mentioned front screen is formed with ladder.
Aforesaid low tooth brush steam seal is characterized in that, the brush silk of above-mentioned brush tow is the high-temperature alloy silk of 0.05-0.12mm, and becomes the 30-60 degree to arrange along rotor radial.
The usefulness of the utility model is:
At first, the position of brush silk assembly does not receive the circular arc internal diameter and the effect on structure of packing, can be arranged on the arbitrarily low tooth; Secondly, the brush silk assembly on the low tooth does not receive the influence of the axial adjacent teeth distance and the difference that expands, and the potential safety hazard of existence is less relatively; Reduce brush silk and baffle plate sheet material material consumption once more, practiced thrift cost.
Description of drawings
Fig. 1 is the cross-sectional side structural representation of a preferred embodiment of the low tooth brush steam seal of the utility model;
Fig. 2 is the preferred embodiment cross-sectional side structural representation during stationary brush silk assembly not of the low tooth brush steam seal of the utility model;
Fig. 3 is the sectional structure schematic representation of brush silk assembly of a preferred embodiment of the low tooth brush steam seal of the utility model.
The implication of reference character among the figure:
1, front screen, 2, the brush tow, 3, backboard, 4, the steam seal ring matrix, 5, high tooth, 6, low tooth, 7, fixed groove, 8, a brush silk assembly.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment the utility model is done concrete introduction.
Fig. 1 is the cross-sectional side structural representation of a preferred embodiment of the low tooth brush steam seal of the utility model; Fig. 2 is the preferred embodiment cross-sectional side structural representation during stationary brush silk assembly not of the low tooth brush steam seal of the utility model; Fig. 3 is the sectional structure schematic representation of brush silk assembly of a preferred embodiment of the low tooth brush steam seal of the utility model.
With reference to Fig. 1 and shown in Figure 3, the low tooth brush steam seal of the utility model mainly comprises: steam seal ring matrix 4 and brush silk assembly 8.
Wherein steam seal ring matrix 4 is provided with and constitutes general labyrinth sealed a plurality of high teeth 5 and low tooth 6 around whole steam seal ring matrix 4 inner rings; High tooth 5 alternately distributes with low tooth 6; Shown in Fig. 1 and Fig. 2; As a kind of preferred version, the height of high tooth 5 is also inconsistent, and the steam seal ring matrix 4 between high tooth 5 forms.In the utility model, one or several in a plurality of low teeth 6 is provided with the fixed groove 7 around whole 4 one weeks of steam seal ring matrix, and the effect of fixed groove 7 is to be used for fixing brush silk assembly 8.
Brush silk assembly 8 is for being fixed on the brush silk structure around whole 4 one weeks of steam seal ring matrix in the fixed groove 7; With reference to shown in Figure 3; Make a kind of preferred version, a brush silk assembly 8 comprises: front screen 1 that is used to reinforce and backboard 3, be arranged on the brush tow 2 between front screen 1 and the backboard 3.
As a kind of preferred version, front screen 1 is lower than backboard 3, and backboard 3 is lower than brush tow 2; Front screen 1 is formed with ladder.In order to realize good sealing effect; The comprehensively consideration of overall factor; Confirm the direction of steam flow, select suitable position that the position of brush silk assembly 8 is set, this design concept is followed following two principles: 1, as far as possible near the high pressure side; Because front and back pressure reduction is big more, the brush tow 2 using effect good more; 2, guarantee the structural strength of steam seal ring matrix 4 as far as possible; Admission direction when confirming to move sets the position of front screen 1 and backboard 3, make the admission direction for by front screen 1 to backboard 3; Set the bristle true dip direction according to the rotor sense of rotation; In conjunction with front and back pressure reduction and the operating conditions of transforming the position, tow thickness is the most reasonably brushed in design, plays best correctional effect with this.
As a kind of preferred version, the brush silk of brush tow is the high-temperature alloy silk of 0.05-0.12mm, and becomes the 30-60 degree to arrange along rotor radial.
The foregoing description does not limit the utility model in any form, and all employings are equal to the technological scheme that mode obtained of replacement or equivalent transformation, all drop in the protection domain of the utility model.
Claims (3)
1. low tooth brush steam seal comprises: steam seal ring matrix, the brush silk assembly that is fixedly connected with above-mentioned steam seal ring matrix; Above-mentioned steam seal ring matrix is provided with a plurality of high tooth that is used to seal and a plurality of low tooth between the above-mentioned high tooth; In the above-mentioned low tooth one or several is provided with fixed groove; Above-mentioned brush silk assembly is fixed in the said fixing groove; Above-mentioned brush silk assembly comprises: front screen that is used to reinforce and backboard, be arranged on the brush tow between above-mentioned front screen and the backboard; It is characterized in that above-mentioned front screen is lower than above-mentioned backboard, above-mentioned backboard is lower than above-mentioned brush tow.
2. low tooth brush steam seal according to claim 2 is characterized in that above-mentioned front screen is formed with ladder.
3. low tooth brush steam seal according to claim 1 and 2 is characterized in that, the brush silk of above-mentioned brush tow is the high-temperature alloy silk of 0.05-0.12mm, and becomes the 30-60 degree to arrange along rotor radial.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203723894U CN202300537U (en) | 2011-09-28 | 2011-09-28 | Low-tooth brush type vapor seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203723894U CN202300537U (en) | 2011-09-28 | 2011-09-28 | Low-tooth brush type vapor seal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202300537U true CN202300537U (en) | 2012-07-04 |
Family
ID=46369459
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203723894U Expired - Lifetime CN202300537U (en) | 2011-09-28 | 2011-09-28 | Low-tooth brush type vapor seal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202300537U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103225519A (en) * | 2013-04-24 | 2013-07-31 | 石伟伟 | Self-adjustment blade type vapor seal |
| 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 |
-
2011
- 2011-09-28 CN CN2011203723894U patent/CN202300537U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103225519A (en) * | 2013-04-24 | 2013-07-31 | 石伟伟 | Self-adjustment blade type vapor seal |
| 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 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: JIANGSU TURBINE SEAL HIGH-TECHNOLOGY CO., LTD. Free format text: FORMER NAME: JIANGSU TURBINE SEAL HIGH-TECHNOLOGY CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 210046, No. 108 East, Gan Jia, Qixia District, Jiangsu, Nanjing Patentee after: Jiangsu Turbine Seal High-Technology Co., Ltd. Address before: 210046, No. 108 East, Gan Jia, Qixia District, Jiangsu, Nanjing Patentee before: Jiangsu Turbine Seal High-Technology Co., Ltd. |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Low-tooth brush type vapor seal Effective date of registration: 20141120 Granted publication date: 20120704 Pledgee: Bank of Beijing, Limited by Share Ltd, Nanjing branch Pledgor: Jiangsu Turbine Seal High-Technology Co., Ltd. Registration number: 2014320000016 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Shen Xiannian Inventor after: Zuo Fei Inventor after: Gu Xinmin Inventor after: Jiang Guo Inventor before: Shen Xiannian Inventor before: Gu Xinmin Inventor before: Jiang Guo |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: SHEN XIANNIAN GU XINMIN JIANG GUO TO: SHEN XIANNIAN ZUO FEI GU XINMIN JIANG GUO |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20170622 Granted publication date: 20120704 Pledgee: Bank of Beijing, Limited by Share Ltd, Nanjing branch Pledgor: Jiangsu Turbine Seal High-Technology Co., Ltd. Registration number: 2014320000016 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170727 Address after: 116600 No. 723, block B, Taihua Hotel, Dalian Free Trade Zone, Liaoning Patentee after: Dalian Free Trade Zone Huahong Industrial Technology Co., Ltd. Address before: 210046, No. 108 East, Gan Jia, Qixia District, Jiangsu, Nanjing Patentee before: Jiangsu Turbine Seal High-Technology Co., Ltd. |
|
| TR01 | Transfer of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120704 |
|
| CX01 | Expiry of patent term |