CN204060815U - One touches Shi Bulaideng Honeycomb steam seal - Google Patents
One touches Shi Bulaideng Honeycomb steam seal Download PDFInfo
- Publication number
- CN204060815U CN204060815U CN201420493091.2U CN201420493091U CN204060815U CN 204060815 U CN204060815 U CN 204060815U CN 201420493091 U CN201420493091 U CN 201420493091U CN 204060815 U CN204060815 U CN 204060815U
- Authority
- CN
- China
- Prior art keywords
- packing
- bulaideng
- shi
- utility
- model
- 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.)
- Active
Links
Abstract
The utility model relates to one and touches Shi Bulaideng Honeycomb steam seal, and it comprises Bu Laideng structure and cellular structure, it is characterized in that: be arranged at intervals with spiral compression spring at the circumferencial direction of packing; Admission groove is provided with at the steam admission side of packing; Cellular structure is arranged on the low tooth position of stage tooth structure.The utility model has the advantage of: between the packing that the utility model provides and rotor, the working clearance is little, and make this packing packing after cold and hot state repeatedly starts without wearing and tearing, and remain that comparatively small―gap suture runs, sealing effect is better.Meanwhile, cellular structure can stop circumferential air-flow, suppresses shaft vibration, thus improves axle rigidity; And cellular grid structure, effectively can absorb moisture content, reach the effect of dehumidifying, thus protection blade.
Description
Technical field
The utility model relates to sealing system technical field, refers to that the one in the seal arrangement of steam turbine touches Shi Bulaideng Honeycomb steam seal especially.
Background technique
Brandon steam-glanding; as a kind of novel packing; similar to traditional comb packing; eliminate traditional packing back plate spring; install four spiral compression springs additional at the circumferencial direction of packing, by the open configuration in stopping process and cross the closed state after critical speed of rotation effectively avoid the impact and rub of packing and rotor and make packing in unit running process all the time with the rotor minimally working clearance.So not only decrease gas leakage, and improve overall efficiency.Honeycomb steam seal, due to the special construction pattern of its regular hexahedron and the soft characteristic of quality, has and does not hinder axle, effectively weaken unit high intermediate pressure cylinder steam flow excitation, and effectively absorption low pressure (LP) cylinder final stage leaf top place water from steam such as to drip at the advantage, and sealing effect is better.
Bu Laideng and Honeycomb steam seal are combined, can play the advantage of two kinds of packings, sealing effect is better, makes equipment run safety more economically.At present, the product combined about these two kinds of packing forms not yet relates to.
Summary of the invention
The purpose of this utility model is to overcome the deficiency of background technique and provides a kind of and brandon steam-glanding and Honeycomb steam seal to be combined and sealing effect touches Shi Bulaideng Honeycomb steam seal more significantly.
The technical solution of the utility model is:
One touches Shi Bulaideng Honeycomb steam seal, and it comprises Bu Laideng structure, stage teeth structure and cellular structure, it is characterized in that: be arranged at intervals with spiral compression spring at the circumferencial direction of packing; Admission groove is provided with at the steam admission side of packing; Cellular structure is arranged on the low tooth position of the stage teeth structure of packing.
Wherein, described cellular structure is cellular grid structure.
Four spiral compression springs are arranged at intervals with at the circumferencial direction of packing.
Advantage of the present utility model is: between the packing that the utility model provides and rotor, the working clearance is little, and makes this packing packing after cold and hot state repeatedly starts without wearing and tearing, and remain that comparatively small―gap suture runs, and sealing effect is better.Meanwhile, cellular structure can stop circumferential air-flow, suppresses shaft vibration, thus improves axle rigidity; And cellular grid structure, effectively can absorb moisture content, reach the effect of dehumidifying, thus protection blade.
Accompanying drawing explanation
Fig. 1-1, Fig. 1-2 are that the utility model touches Shi Bulaideng Honeycomb steam seal circle schematic diagram.
Fig. 2 is that the utility model touches Shi Bulaideng Honeycomb steam seal spiral compression spring schematic diagram.
Fig. 3 is that the utility model touches Shi Bulaideng Honeycomb steam seal block side view.
Fig. 4 is that the utility model touches Shi Bulaideng Honeycomb steam seal block plan view.
Number in the figure is: 1-spiral compression spring, 2-cellular structure, 3-stage tooth, 4-admission groove.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in further detail.
As shown in Figures 1 to 4, the utility model touches Shi Bulaideng Honeycomb steam seal, comprises Bu Laideng structure and cellular structure, is arranged at intervals with four spiral compression springs 1 at the circumferencial direction of packing; Admission groove 4 is provided with at the steam admission side of packing; Cellular structure 2 is arranged on the low tooth position of stage tooth 3.
Working procedure of the present utility model is:
After steam turbine starts, steam enters in cylinder, along with the increase of Turbine Flow Path steam inlet, the closing forces acting on packing segmental arc back overcomes opening force and the frictional force of the spiral compression spring 1 acting on packing flank, packing segment is closed gradually under the effect of closing forces, as shown in " a " in Fig. 1, and finally realizes the closedown of gland blocks, make stage tooth 3 reduce to minimum value with the radial clearance of rotor, and kept.When compressor emergency shutdown; because the steam flow entered is few; the corresponding steam flow entering packing segmental arc back also lacks; the closing forces acting on packing segmental arc back reduces; gland blocks, under the effect of the opening force of spiral compression spring 1, makes packing be in open configuration, away from rotor; stage tooth 3 and the radial clearance of rotor are kept larger state, as shown in " b " in Fig. 1.Like this; by opening and closing automatically of packing radian; achieve open at unit, the radial clearance of packing and rotor is adjustable in stopping process; avoid the impact and rub because vibration produces; in unit normally runs, the radial clearance of packing and rotor remains in less scope, i.e. the lower limit of design load.When steam flows through cellular structure 2 simultaneously, produce interaction force, cellular structure 2 can produce very strong eddy current and barrier, thus forms very large damping, plays the effect stoping refrigerant leakage.And the grid structure of honeycomb, the effect achieving steam dehumidifying, protect blade to be without prejudice.
Claims (3)
1. touch a Shi Bulaideng Honeycomb steam seal, it comprises Bu Laideng structure and cellular structure, it is characterized in that: be arranged at intervals with spiral compression spring at the circumferencial direction of packing; Admission groove is provided with at the steam admission side of packing; Cellular structure is arranged on the low tooth position of stage tooth structure.
2. according to claim 1ly touch Shi Bulaideng Honeycomb steam seal, it is characterized in that: described cellular structure is cellular grid structure.
3. according to claim 1ly touch Shi Bulaideng Honeycomb steam seal, it is characterized in that: be arranged at intervals with four spiral compression springs at the circumferencial direction of packing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420493091.2U CN204060815U (en) | 2014-08-28 | 2014-08-28 | One touches Shi Bulaideng Honeycomb steam seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420493091.2U CN204060815U (en) | 2014-08-28 | 2014-08-28 | One touches Shi Bulaideng Honeycomb steam seal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204060815U true CN204060815U (en) | 2014-12-31 |
Family
ID=52202352
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420493091.2U Active CN204060815U (en) | 2014-08-28 | 2014-08-28 | One touches Shi Bulaideng Honeycomb steam seal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204060815U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106812557A (en) * | 2017-03-13 | 2017-06-09 | 华电能源股份有限公司富拉尔基发电厂 | Macro and micro servo centre frame vibration damping adjusts the method and device of steam turbine sealing gland |
| CN106837435A (en) * | 2017-03-14 | 2017-06-13 | 华电能源股份有限公司富拉尔基发电厂 | Jet sectional center frame vibration damping adjusts the method and device of steam turbine sealing gland |
| CN106894851A (en) * | 2017-03-13 | 2017-06-27 | 华电能源股份有限公司富拉尔基发电厂 | The method and vibration absorber in centre frame vibration damping regulation steam turbine sealing gland gap |
-
2014
- 2014-08-28 CN CN201420493091.2U patent/CN204060815U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106812557A (en) * | 2017-03-13 | 2017-06-09 | 华电能源股份有限公司富拉尔基发电厂 | Macro and micro servo centre frame vibration damping adjusts the method and device of steam turbine sealing gland |
| CN106894851A (en) * | 2017-03-13 | 2017-06-27 | 华电能源股份有限公司富拉尔基发电厂 | The method and vibration absorber in centre frame vibration damping regulation steam turbine sealing gland gap |
| CN106894851B (en) * | 2017-03-13 | 2019-03-08 | 华电能源股份有限公司富拉尔基发电厂 | The method and vibration absorber in centre frame vibration damping adjusting steam turbine sealing gland gap |
| CN106837435A (en) * | 2017-03-14 | 2017-06-13 | 华电能源股份有限公司富拉尔基发电厂 | Jet sectional center frame vibration damping adjusts the method and device of steam turbine sealing gland |
| CN106837435B (en) * | 2017-03-14 | 2019-03-08 | 华电能源股份有限公司富拉尔基发电厂 | The method and device of jet sectional center frame vibration damping adjusting steam turbine sealing gland |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204060815U (en) | One touches Shi Bulaideng Honeycomb steam seal | |
| RU2014134637A (en) | DEVICE AND METHOD FOR UNLOCKING A GAS TURBINE AFTER ITS STOP | |
| CN102953771A (en) | Labyrinth damping sealing device with low leakage and high damping performance | |
| FR2981979B1 (en) | TURBINE WHEEL FOR A TURBOMACHINE | |
| RU2014119682A (en) | EXPANSION TURBINE OPERATING BASED ON CRYOGENIC LIQUID | |
| MX335969B (en) | Fluid flow machine especially gas turbine penetrated axially by a hot gas stream. | |
| RU2017102992A (en) | WAVE SUPPRESSOR | |
| CN104819015B (en) | Self adaptation dynamic pressure air film compound blade tip sealing device and encapsulating method thereof | |
| CN204060817U (en) | One touches Shi Bulaideng brush steam seal | |
| CN201991572U (en) | Labyrinth gland with combined main teeth, side teeth and honeycomb belt | |
| CN202402085U (en) | Comb-tooth honeycomb sealing structure | |
| CN204060811U (en) | A kind of choke type Honeycomb steam seal | |
| CN203948136U (en) | The low pressure stage group exhaust stage blade of leaving area 3.6m2 variable speed air cooling industrial steam turbine | |
| CN204025051U (en) | A kind of novel slide vane compressor | |
| CN206111422U (en) | Governor of hydraulic turbine sequence closing fail safe device | |
| CN202391484U (en) | Adjustable steam-supplementing mechanism for steam turbine | |
| CN204458250U (en) | Fully closed horizontal No leakage body | |
| CN104265378B (en) | A kind of novel hysteresis formula variable gap packing | |
| CN103422913A (en) | Turbine with honeycomb inner-wall casing | |
| CN103939616A (en) | High-performance low-noise sealing device based on Helmholtz resonance principle | |
| CN202866903U (en) | Brush type honeycomb vapor seal | |
| CN203463293U (en) | Low noise air blower | |
| CN202851975U (en) | Sealing tooth-shaped structure capable of self-restraining leakage | |
| CN201025075Y (en) | Low diameter gas sealer for steamship engine | |
| CN202560332U (en) | Single/double-tooth double-sided lateral-tooth adjustable steam seal |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |