CN203516734U - Rotary spiral non-contact main shaft sealing mechanism - Google Patents
Rotary spiral non-contact main shaft sealing mechanism Download PDFInfo
- Publication number
- CN203516734U CN203516734U CN201320345004.4U CN201320345004U CN203516734U CN 203516734 U CN203516734 U CN 203516734U CN 201320345004 U CN201320345004 U CN 201320345004U CN 203516734 U CN203516734 U CN 203516734U
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- China
- Prior art keywords
- main shaft
- rotary sleeve
- rotary
- sealing mechanism
- shaft sealing
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- 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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Abstract
The utility model relates to generating equipment and especially relates to a rotary spiral non-contact main shaft sealing mechanism to mainly solve a problem of sediment wear existing in contact type seal of a generator in the prior art. In a flood season, increasing sediment flows through a set and sediment grain size increases, so asbestos packing is quickly worn, a rubber block is burned and an anti-weary plate is completely grinded, thereby enlarging water leakage of the set. The rotary spiral non-contact main shaft sealing mechanism comprises a main shaft (1) and is characterized in that a rotary sleeve (2) is fastened on the external surface of the main shaft (1); the external surface of the rotary sleeve is provided with a T-shaped thread groove (3) with a large coarse pitch and opposite to a water inflowing direction; and the exterior of the rotary sleeve is provided with a water wheel fixing member (4).
Description
Technical field
The utility model relates to a kind of power generating equipment, especially relates to the contactless main shaft seal of a kind of rotary screw type mechanism.
Background technique
At present, existing hydroelectric generator is mainly that the drop by current generates electricity, and first wants ponding, by certain height, after formation hydraulic pressure, with the water turbine of generator, generate electricity, i.e. so-called drop hydroelectric generator, be mainly used in mountain region, hills, drop is larger, water flow is also larger.Chinese patent discloses a kind of hydroelectric power unit (publication number: CN 101545444A), it comprises a fixing frame, at fixing frame, be provided with generator, below fixing frame, be provided with successively a plurality of slip rings, at each slip ring outlet end, be provided with the water wheels assembly that can rotate under natural flowing water drives, asking of water wheels assembly and generator, be provided with driving mechanism, the water wheels assembly front end under fixing frame is provided with the adjustable controlling device that enters the water flow size of water wheels assembly; Slip ring is the housing of a cone-shaped, and its entry end is greater than outlet end, before each controlling device is located at respectively water wheels assembly; Controlling device is included in a plurality of adjustment sheets that water wheels assembly space before arranges, and adjustment sheet is arranged on rotatingshaft, is provided with pivoted arm on rotatingshaft, and pivoted arm is regulated by pull bar, is provided with the power piston that can drive pull bar work on pull bar; Pull bar comprise be connected with power piston promote mainly pull bar and the attached pull bar being connected with pivoted arm, by triangle lever, connect promoting mainly between pull bar and attached pull bar.But this generator cannot solve the intrinsic sand erosion problem of " contact-type " sealing, especially in flood season, unit is crossed machine quantity of sand and mud and is increased, and crosses machine sediment grain size and increases, cause asbestos packing Fast Wearing, block rubber scaling loss, wearing plate, facing plate worn out, thereby cause the unit increasing of leaking.Many draining pumps of some power plant's employings are day and night pumped and are also difficult to address this problem completely, and even finally by forced-stopping machine, economic loss is huge.
Model utility content
The utility model is to provide the contactless main shaft seal of a kind of rotary screw type mechanism, it is mainly to solve the existing generator of prior art cannot solve the intrinsic sand erosion problem of " contact-type " sealing, during flood season, unit is crossed the increase of machine quantity of sand and mud, crossing machine sediment grain size increases, cause asbestos packing Fast Wearing, block rubber scaling loss, wearing plate, facing plate worn out, thus the technical problem that causes unit to leak to strengthen etc.
Above-mentioned technical problem of the present utility model is mainly solved by following technical proposals:
The contactless main shaft seal of a kind of rotary screw type of the present utility model mechanism, comprise main shaft, the outer surface of described main shaft is fixed with rotary sleeve, and the outer surface of rotary sleeve is provided with the T-shaped thread groove of large screw pitch with the opposite direction of intaking, and the outside of rotary sleeve is provided with water turbine fixed block.At water turbine rotating part, the T-shaped thread groove structure of large screw pitch of design and water inlet opposite direction, in unit when work,, the reverse prevention of backpressure that relies on screw thread rotation the to produce inflow of leaking, is main shaft waterstop sealing.This Novel main shaft sealing can reduce unit water leakage 1/3 left and right, not only to main shaft, can not cause damage, simultaneously can effectively anti-sealing, silt causes corrosion to top cover, main shaft seal and oil bearing.Babbitting in the dovetail groove of main shaft seal fixed component endoporus, avoids the wearing and tearing of rotary component, without the clean water that re-uses cooling and lubricating.
As preferably, between the outer surface of described rotary sleeve and water turbine fixed block, leave the gap of 0.3-0.4mm.Between water turbine rotating part and standing part, leave the gap of 0.3-0.4mm, guaranteed that two-part do not contact in the course of the work mutually.
As preferably, described rotary sleeve is that 0Cr13Ni5Mo stainless steel material is made, wear-resistant, corrosion-resistant.
Therefore, the utility model is at water turbine rotating part, be provided with the T-shaped thread groove structure of large screw pitch with the opposite direction of intaking, during unit work, the reverse prevention of backpressure that relies on screw thread rotation the to produce inflow of leaking, makes the main shaft can waterstop sealing, and between water turbine rotating part and standing part, leaves the gap of 0.3-0.4mm, guaranteed that two-part do not contact in the course of the work mutually, simple and reasonable for structure.
Accompanying drawing explanation
Accompanying drawing 1 is a kind of structural representation of the present utility model;
Accompanying drawing 2 is A portion structure for amplifying schematic diagram of Fig. 1.
Component, position and numbering in figure: main shaft 1, rotary sleeve 2, the T-shaped thread groove 3 of large screw pitch, water turbine fixed block 4.
Embodiment
Below by embodiment, and by reference to the accompanying drawings, the technical solution of the utility model is described in further detail.
Embodiment: the contactless main shaft seal of a kind of rotary screw type mechanism of this example, as Fig. 1, comprise main shaft 1, the outer surface of main shaft is fixed with rotary sleeve 2, the outer surface of rotary sleeve is provided with the T-shaped thread groove 3 of large screw pitch with the opposite direction of intaking, and the outside of rotary sleeve is provided with water turbine fixed block 4.As Fig. 2, between the outer surface of rotary sleeve and water turbine fixed block, leave the gap of 0.3-0.4mm.Rotary sleeve is that 0Cr13Ni5Mo stainless steel material is made.
The foregoing is only specific embodiment of the utility model, but structure characteristic of the present utility model is not limited to this, any those skilled in the art is in field of the present utility model, and the variation of doing or modification are all encompassed among the scope of the claims of the present utility model.
Claims (3)
1. the contactless main shaft seal of a rotary screw type mechanism, comprise main shaft (1), the outer surface that it is characterized in that described main shaft (1) is fixed with rotary sleeve (2), the outer surface of rotary sleeve is provided with the T-shaped thread groove of large screw pitch (3) with the opposite direction of intaking, and the outside of rotary sleeve is provided with water turbine fixed block (4).
2. the contactless main shaft seal of a kind of rotary screw type according to claim 1 mechanism, is characterized in that leaving between the outer surface of described rotary sleeve (2) and water turbine fixed block (4) gap of 0.3-0.4mm.
3. the contactless main shaft seal of a kind of rotary screw type according to claim 1 and 2 mechanism, is characterized in that described rotary sleeve (2) makes for 0Cr13Ni5Mo stainless steel material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320345004.4U CN203516734U (en) | 2013-06-17 | 2013-06-17 | Rotary spiral non-contact main shaft sealing mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320345004.4U CN203516734U (en) | 2013-06-17 | 2013-06-17 | Rotary spiral non-contact main shaft sealing mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203516734U true CN203516734U (en) | 2014-04-02 |
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ID=50375666
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320345004.4U Expired - Fee Related CN203516734U (en) | 2013-06-17 | 2013-06-17 | Rotary spiral non-contact main shaft sealing mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203516734U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103967768A (en) * | 2014-05-09 | 2014-08-06 | 徐承韬 | Device for preventing eccentric wear of guide ring and application method thereof |
| CN104315147A (en) * | 2014-09-03 | 2015-01-28 | 东方电气集团东风电机有限公司 | Power type contactless main shaft sealing device |
-
2013
- 2013-06-17 CN CN201320345004.4U patent/CN203516734U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103967768A (en) * | 2014-05-09 | 2014-08-06 | 徐承韬 | Device for preventing eccentric wear of guide ring and application method thereof |
| CN103967768B (en) * | 2014-05-09 | 2017-01-25 | 徐承韬 | Device for preventing eccentric wear of guide ring and application method thereof |
| CN104315147A (en) * | 2014-09-03 | 2015-01-28 | 东方电气集团东风电机有限公司 | Power type contactless main shaft sealing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140402 Termination date: 20180617 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |