CN105065673B - A kind of dual-thread seal device of pump turbine - Google Patents
A kind of dual-thread seal device of pump turbine Download PDFInfo
- Publication number
- CN105065673B CN105065673B CN201510418563.7A CN201510418563A CN105065673B CN 105065673 B CN105065673 B CN 105065673B CN 201510418563 A CN201510418563 A CN 201510418563A CN 105065673 B CN105065673 B CN 105065673B
- Authority
- CN
- China
- Prior art keywords
- main shaft
- thread part
- sealing ring
- internal thread
- pump turbine
- 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
- 238000007789 sealing Methods 0.000 claims abstract description 39
- 238000003780 insertion Methods 0.000 claims abstract description 4
- 230000000694 effects Effects 0.000 abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 15
- 239000007788 liquid Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000002708 enhancing Effects 0.000 description 1
- 230000001340 slower Effects 0.000 description 1
- 230000003068 static Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B11/00—Parts or details not provided for in, or of interest apart from, the preceding groups, e.g. wear-protection couplings, between turbine and generator
- F03B11/006—Sealing arrangements
-
- 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
Abstract
The present invention discloses a kind of dual-thread seal device of pump turbine, including sealing shroud, sealing ring and the main shaft being installed on pump turbine, one end is provided with external thread part on the main shaft, and the periphery of main shaft external thread part is cased with sealing shroud, opens up fluted on sealing shroud；In main shaft periphery, sealing ring includes internal thread part and the fixed part being connected with internal thread part to the seal ring set, and in internal thread part insertion groove (overall annular in shape), fixed part is fixed on main shaft.The present invention is set by double thread, and with better seal effect, and simple structure, institute is costly relatively low, with wide market prospects.
Description
Technical field
The utility model is related to pump turbine Sealing Technology, and in particular to a kind of dual-thread seal dress of pump turbine
Put.
Background technology
At present, the sealing means of pump turbine are varied, such as dynamic sealing or static seal, but sealing effectiveness is not
It is highly desirable, does not reach required effect also in actual applications.
Utility model content
Goal of the invention：The purpose of this utility model is to solve defect present in prior art, there is provided a kind of water pump water
The dual-thread seal device of turbine.
Technical scheme：A kind of dual-thread seal device of pump turbine of the present utility model, including sealing shroud, sealing ring
With the main shaft being installed on pump turbine, one end is provided with external thread part, the periphery set of main shaft external thread part on the main shaft
There is sealing shroud, open up fluted on sealing shroud；The sealing ring is fixed on main shaft periphery, sealing ring include internal thread part and with
The fixed part that internal thread part is connected, in internal thread part insertion groove, fixed part is fixed on main shaft.
Further, the convolution direction of the external thread part on the main shaft and the direction of rotation of main shaft are conversely, can be by water
It is sent in the inner chamber of pump turbine.
Further, on the sealing ring internal thread part convolution direction it is identical with the direction of rotation of main shaft, can by from
The water spilt at external thread part sealing is conveyed toward external thread part direction again.
Water (flow) direction at above-mentioned external thread part and internal thread part two is relative, forms continuous sealing effect.In water pump
When the hydraulic turbine works, whole equipment direction of rotation is consistent.
Further, the groove is annular in shape.
Beneficial effect：The utility model is set by double thread, with better seal effect, and simple structure, institute
It is costly relatively low, with wide market prospects.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Specific embodiment
Technical solutions of the utility model are described in detail below, but protection domain of the present utility model is not limited to
The embodiment.
As shown in figure 1, a kind of dual-thread seal device of pump turbine of the present utility model, including sealing shroud 2, sealing
Ring 1 and the main shaft 3 being installed on pump turbine, one end is provided with external thread part 31, the external thread part of main shaft on the main shaft 3
31 periphery is cased with sealing shroud 2, and fluted 21 are opened up on sealing shroud 2；The sealing ring 1 is placed on the periphery of main shaft 3, and sealing ring 1 is wrapped
Include internal thread part 11 and the fixed part being connected with internal thread part 11, the insertion of internal thread part 11 groove 21 (overall annular in shape)
In, fixed part is fixed on main shaft 3.
The direction of rotation of the convolution direction of the external thread part 31 on above-mentioned main shaft 3 and main shaft 3 is (from showing that main shaft is left shown in Fig. 1
Eye right at end) it is opposite；While the direction of rotation in the convolution direction of internal thread part 11 and main shaft 3 on sealing ring 1 is (from master shown in Fig. 1
Axle left end eyes right) it is identical.
Concrete operating principle of the present utility model is：
When water pump, the hydraulic turbine operationally, press water will be leaked out along runner with the gap of housing.
Due to being provided with the external thread part 31 oppositely oriented with its own on main shaft 3 so that the water of seepage full of screw thread and
The space that sealing shroud 2 is included, forms such as " the liquid nut " of solid-like nut.The convolution side of external thread part 31 on main shaft 3
To causing " liquid nut " that axial movement is produced when main shaft 3 rotates, promote water constantly to return to high-pressure side, thus increase water
Resistance, slows down the seepage of water, successfully realizes ground floor sealing function.
When the water of part seepage runs into on sealing ring 1 with 3 rotation direction identical internal thread part 11 of main shaft again, in sealing ring
Between 1 internal thread part 11 and the groove 21 of sealing shroud 2, " the liquid stud " of so-called similar fixing nut is formed, with sealing ring 1
Rotation promote water constantly to return to sub-high pressure end, then high-pressure side is delivered to by the external screw thread 31 on main shaft 3.So sealing effectiveness is significantly
Enhancing, and then successfully realize second layer sealing function.If the water (less, negligible) for having seepage again is then arranged by drainpipe
Go out.
Claims (1)
1. the dual-thread seal device of a kind of pump turbine, including sealing shroud, sealing ring and be installed on pump turbine
Main shaft, it is characterised in that：One end is provided with external thread part on the main shaft, and the periphery of main shaft external thread part is cased with sealing shroud, close
Groove annular in shape is offered on big envelope；The sealing ring is fixed on main shaft periphery, sealing ring include internal thread part and with it is interior
The fixed part that threaded portion is connected, in internal thread part insertion groove, fixed part is fixed on main shaft；External thread part on main shaft is returned
Rotation direction is opposite with the direction of rotation of main shaft；Internal thread part convolution direction on sealing ring is identical with the direction of rotation of main shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510418563.7A CN105065673B (en) | 2015-07-16 | 2015-07-16 | A kind of dual-thread seal device of pump turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510418563.7A CN105065673B (en) | 2015-07-16 | 2015-07-16 | A kind of dual-thread seal device of pump turbine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105065673A CN105065673A (en) | 2015-11-18 |
| CN105065673B true CN105065673B (en) | 2017-06-20 |
Family
ID=54495124
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510418563.7A Active CN105065673B (en) | 2015-07-16 | 2015-07-16 | A kind of dual-thread seal device of pump turbine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105065673B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111457095A (en) * | 2020-05-07 | 2020-07-28 | 王以军 | Double-thread sealing device of water pump turbine |
| CN111981133A (en) * | 2020-09-04 | 2020-11-24 | 重庆水轮机厂有限责任公司 | Water turbine with main shaft sealing structure |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2142149Y (en) * | 1992-12-03 | 1993-09-15 | 四川电力科学试验研究所 | Helicoidal pump type mainshaft seal for water turbine |
| JPH08177705A (en) * | 1994-12-27 | 1996-07-12 | Toshiba Eng Co Ltd | Main shaft sealing water device of vertical shaft hydraulic turbine |
| CN2381845Y (en) * | 1998-04-14 | 2000-06-07 | 马剑 | Mechanical sealing device |
| CN201763960U (en) * | 2010-08-20 | 2011-03-16 | 贵州航空发动机研究所 | Centrifuge drying type secondary spiral sealing device |
| CN102734443A (en) * | 2011-04-11 | 2012-10-17 | 天津市七星精密机械有限公司 | Double spiral axial moving seal driving device |
| CN202832940U (en) * | 2012-09-06 | 2013-03-27 | 南京泉腾冷却设备有限公司 | Cooling tower water turbine with water seal |
| CN103775647A (en) * | 2012-10-18 | 2014-05-07 | 天津市七星精密机械有限公司 | Combined type dynamic seal transmission assembly |
| CN204041332U (en) * | 2014-08-06 | 2014-12-24 | 华泽南 | A kind of bearing (ball) cover annular groove spindle thread seal arrangement |
| CN104197019B (en) * | 2014-08-15 | 2016-05-25 | 哈尔滨东安发动机（集团）有限公司 | Multi-sealing structure |
| CN204083233U (en) * | 2014-08-15 | 2015-01-07 | 哈尔滨东安发动机（集团）有限公司 | Castor tooth axle sleeve |
| CN204828660U (en) * | 2015-07-16 | 2015-12-02 | 江苏航天水力设备有限公司 | Double thread sealing device of water pump hydraulic turbine |
-
2015
- 2015-07-16 CN CN201510418563.7A patent/CN105065673B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN105065673A (en) | 2015-11-18 |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |