CN201874725U - Combined comb tooth sealing structure - Google Patents
Combined comb tooth sealing structure Download PDFInfo
- Publication number
- CN201874725U CN201874725U CN201020649237XU CN201020649237U CN201874725U CN 201874725 U CN201874725 U CN 201874725U CN 201020649237X U CN201020649237X U CN 201020649237XU CN 201020649237 U CN201020649237 U CN 201020649237U CN 201874725 U CN201874725 U CN 201874725U
- Authority
- CN
- China
- Prior art keywords
- ring
- comb tooth
- main shaft
- upper comb
- tooth 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 - Fee Related
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Abstract
The utility model relates to a structure of a main shaft seal of a water turbine, in particular to a combined comb tooth sealing structure, which can be suitable for various small-sized axial flow open channel water turbines. The combined comb tooth sealing structure comprises an upper comb tooth ring and a lower comb tooth ring matched with the upper comb tooth ring, wherein the upper comb tooth ring and the lower comb tooth ring are respectively fastened and sleeved outside a main shaft; various comb teeth of the upper comb tooth ring and the lower comb tooth ring are in clearance fit; a thread bush is fastened and sleeved outside the lower end of the upper comb tooth; the thread rotating direction of the outer surface of the thread bush is opposite to the rotating direction of the main shaft; and thread bush is in clearance fit with the lower comb tooth ring. The optimal sealing effect of the main shaft can be formed, which is conductive to maintaining the water pressure of a pressure cavity; and clean water in the pressure cavity is forced to lubricate and cool a rubber bush guide bearing at the lower part, so that the service life of the rubber bearing bush is effectively prolonged.
Description
Technical field
The utility model relates to the use of structure on the hydraulic turbine main shaft sealing, applicable to various small-size shaft lumen slot type water turbine, relates to a kind of combined type labyrinth seal structure specifically.
Background technique
The labyrinth seal structure is widely used in small-size shaft lumen slot type water turbine, is used to prevent the leakage of pressure chamber clean water and the unclean water source that impurity is contained in the isolated external world.Originally Chang Yong measure is: only be provided with single labyrinth seal device and realize the main shaft seal function, sealing effect is very not desirable, As time goes on, the continuous cavitation erosion of sealing configuration causes the gap to increase, water leakage increasing, the hydraulic pressure of clean water pressure chamber is difficult for keeping, and what cause rubber tile forces cooling, greasy property poor, influences the working life of rubber tile.For improving this single labyrinth seal device, designed knockdown labyrinth seal structure of the present utility model, on original basis, increased sealing configurations such as reverse thread cover and rubber seal ring, reached better using effect.When improving sealing effect, guaranteed the Environmental Conditions of rubber tile, effectively prolong the working life of rubber bearing bush.
The model utility content
The purpose of this utility model is to provide a kind of combined type labyrinth seal structure that is applicable to various small-size shaft lumen slot type water turbine.
In order to realize the purpose of this utility model, the technical solution adopted in the utility model is:
A kind of combined type labyrinth seal structure, comprise upper comb dent ring and the following broach ring that is complementary with the upper comb dent ring, described upper comb dent ring and the equal adapter sleeve of following broach ring are loaded on the main shaft outside, the upper comb dent ring is a Spielpassung with each broach of following broach ring, the outside adapter sleeve in the lower end of described upper comb dent ring is equipped with thread bush, the thread rotary orientation of described thread bush outer surface and main shaft direction of rotation are Spielpassung between described thread bush and the following broach ring.
Described upper comb dent ring is equipped with seal ring with following broach ring outer surface adapter sleeve, and described seal ring covers the gap of described upper comb dent ring and following broach ring outer surface.
The outside adapter sleeve of described seal ring is equipped with the guard shield on band top, and described guard shield top is provided with the through hole that is complementary with the main shaft external diameter, and guard shield lower end adapter sleeve is contained in the seal ring outer surface.
The beneficial effects of the utility model are:
Form better main shaft seal effect, the rubber tile guide bearing of the clean water enforced lubricating in the hydraulic pressure in the chamber that helps keep-uping pressure, pressure chamber, cooling bottom effectively prolongs working life of rubber bearing bush.
Description of drawings
Fig. 1 is the utility model sectional structure schematic representation.
Fig. 2 is the partial enlarged drawing of A portion among Fig. 1.
Embodiment
Below in conjunction with drawings and Examples the utility model is further specified:
Embodiment: referring to Fig. 1, Fig. 2.
A kind of combined type labyrinth seal structure, comprise upper comb dent ring 1 and the following broach ring 2 that is complementary with the upper comb dent ring, described upper comb dent ring 1 and following broach ring 2 equal adapter sleeves are loaded on main shaft 3 outsides, upper comb dent ring 1 is a Spielpassung with each broach of following broach ring 2, the outside adapter sleeve in the lower end of described upper comb dent ring 1 is equipped with thread bush 4, the thread rotary orientation of described thread bush 4 outer surfaces and the direction of rotation of main shaft 3 are Spielpassung between described thread bush 4 and the following broach ring 2.To the downward thrust of water generates, reduce the leakage of water during thread bush 4 rotations;
Described upper comb dent ring 1 is equipped with seal ring 5 with following broach ring 2 outer surface adapter sleeves, and described seal ring 5 covers the gap of described upper comb dent ring 1 and following broach ring 2 outer surfaces.Seal ring 5 has prevented that the cleaning water source in extraneous unclean water source and the pressure chamber from mixing, and also can play certain water sealing effect simultaneously.
The outside adapter sleeve of described seal ring 5 is equipped with the guard shield 6 on band top, and described guard shield 6 tops are provided with the through hole that is complementary with main shaft 3 external diameters, and guard shield 6 lower end adapter sleeves are contained in the seal ring outer surface.Through hole is used for main shaft 3 and passes.
The thread bush 4, seal ring 5, the guard shield 6 that have reverse thread use simultaneously, form better main shaft seal effect, help the keep-uping pressure hydraulic pressure in chamber, the rubber tile guide bearing of the clean water enforced lubricating in the pressure chamber, cooling bottom effectively prolongs working life of rubber bearing bush.
Claims (3)
1. combined type labyrinth seal structure, comprise upper comb dent ring (1) and the following broach ring (2) that is complementary with the upper comb dent ring, described upper comb dent ring (1) and following broach ring (2) all adapter sleeve are loaded on main shaft (3) outside, upper comb dent ring (1) is a Spielpassung with each broach of following broach ring (2), it is characterized in that: the outside adapter sleeve in the lower end of described upper comb dent ring (1) is equipped with thread bush (4), the thread rotary orientation of described thread bush (4) outer surface and the direction of rotation of main shaft (3) are Spielpassung between described thread bush (4) and the following broach ring (2).
2. a kind of combined type labyrinth seal structure according to claim 1, it is characterized in that: described upper comb dent ring (1) is equipped with seal ring (5) with following broach ring (2) outer surface adapter sleeve, and described seal ring (5) covers the gap of described upper comb dent ring (1) and following broach ring (2) outer surface.
3. a kind of combined type labyrinth seal structure according to claim 2, it is characterized in that: the outside adapter sleeve of described seal ring (5) is equipped with the guard shield (6) on band top, described guard shield (6) top is provided with the through hole that is complementary with main shaft (3) external diameter, and guard shield (6) lower end adapter sleeve is contained in the seal ring outer surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020649237XU CN201874725U (en) | 2010-12-09 | 2010-12-09 | Combined comb tooth sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020649237XU CN201874725U (en) | 2010-12-09 | 2010-12-09 | Combined comb tooth sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201874725U true CN201874725U (en) | 2011-06-22 |
Family
ID=44162645
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020649237XU Expired - Fee Related CN201874725U (en) | 2010-12-09 | 2010-12-09 | Combined comb tooth sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201874725U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103470774A (en) * | 2013-08-30 | 2013-12-25 | 西安交通大学苏州研究院 | Stepped comb tooth seal |
| CN105587863A (en) * | 2016-03-09 | 2016-05-18 | 浙江尚鼎工业炉有限公司 | Sealing mechanism with gas exchange preventing function |
| CN105626868A (en) * | 2016-03-09 | 2016-06-01 | 浙江尚鼎工业炉有限公司 | Sealing mechanism capable of preventing gas exchange |
| CN107152531A (en) * | 2017-05-31 | 2017-09-12 | 江苏海川卓越密封材料有限公司 | A kind of stepped liquid labyrinth seal |
| CN113266641A (en) * | 2021-06-22 | 2021-08-17 | 韶关市浈江区泉汇水电设备有限公司 | Bearing bush automatic regulating device and bearing bush seat assembly |
| CN113621771A (en) * | 2021-08-13 | 2021-11-09 | 嵊州市因康机械有限公司 | Multifunctional roller hearth furnace |
| CN113621775A (en) * | 2021-08-13 | 2021-11-09 | 嵊州市因康机械有限公司 | Energy-saving roller hearth furnace |
-
2010
- 2010-12-09 CN CN201020649237XU patent/CN201874725U/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103470774A (en) * | 2013-08-30 | 2013-12-25 | 西安交通大学苏州研究院 | Stepped comb tooth seal |
| CN103470774B (en) * | 2013-08-30 | 2016-01-13 | 西安交通大学苏州研究院 | A kind of stepped shaft labyrinth seal |
| CN105587863A (en) * | 2016-03-09 | 2016-05-18 | 浙江尚鼎工业炉有限公司 | Sealing mechanism with gas exchange preventing function |
| CN105626868A (en) * | 2016-03-09 | 2016-06-01 | 浙江尚鼎工业炉有限公司 | Sealing mechanism capable of preventing gas exchange |
| CN107152531A (en) * | 2017-05-31 | 2017-09-12 | 江苏海川卓越密封材料有限公司 | A kind of stepped liquid labyrinth seal |
| CN113266641A (en) * | 2021-06-22 | 2021-08-17 | 韶关市浈江区泉汇水电设备有限公司 | Bearing bush automatic regulating device and bearing bush seat assembly |
| CN113266641B (en) * | 2021-06-22 | 2023-01-13 | 韶关市浈江区泉汇水电设备有限公司 | Bearing bush automatic regulating apparatus and bearing bush seat assembly |
| CN113621771A (en) * | 2021-08-13 | 2021-11-09 | 嵊州市因康机械有限公司 | Multifunctional roller hearth furnace |
| CN113621775A (en) * | 2021-08-13 | 2021-11-09 | 嵊州市因康机械有限公司 | Energy-saving roller hearth furnace |
| CN113621775B (en) * | 2021-08-13 | 2023-08-15 | 浙江鸿达炉业科技有限公司 | Energy-saving roller hearth furnace |
| CN113621771B (en) * | 2021-08-13 | 2024-01-16 | 嵊州市因康机械有限公司 | Multifunctional roller hearth furnace |
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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: 20110622 Termination date: 20131209 |