CN210422856U - Main shaft sealing structure of water turbine - Google Patents
Main shaft sealing structure of water turbine Download PDFInfo
- Publication number
- CN210422856U CN210422856U CN201921359512.1U CN201921359512U CN210422856U CN 210422856 U CN210422856 U CN 210422856U CN 201921359512 U CN201921359512 U CN 201921359512U CN 210422856 U CN210422856 U CN 210422856U
- Authority
- CN
- China
- Prior art keywords
- packing
- water
- groove
- ring
- main shaft
- 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
Images
Classifications
-
- 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
Landscapes
- Hydraulic Turbines (AREA)
Abstract
The utility model discloses a main shaft seal structure of hydraulic turbine, including hydraulic turbine casing body, set up the shaft hole of putting at hydraulic turbine casing body central point, alternate main shaft in the shaft hole, set up on hydraulic turbine casing body and be located the embedded groove of shaft hole upside and install the sealing ring in the embedded groove, on hydraulic turbine casing body, be located the embedded groove upside position and be equipped with the filled groove, the built-in water sealing packing that is equipped with of filled groove, the upper surface that is located water sealing packing in the filled groove is filled with and packs. The nut supports downwards and presses the backing ring to drive go-between and clamping ring downstream, the clamping ring supports downwards and presses the filler, the filler has good water proof, and have the effect of mutual lubrication between the powder, promote to pack to scurry into to other spaces when being supported and pressed, pack and support and press the inner wall that seals horizontal portion of water packing, vertical portion and filled groove, make the inside bottom that seals horizontal portion of water packing compresses tightly the upper end of sealing ring and filled groove.
Description
Technical Field
The utility model relates to a main shaft seal structure of hydraulic turbine.
Background
The mixed flow water turbine belongs to one of the counterattack water turbines, the water flow flows into the runner from the periphery in the radial direction and then flows out of the runner in the approximate axial direction, the runner is composed of an upper crown, a lower ring and blades, the mixed flow water turbine has wide application water head, simple structure, stable operation and high efficiency, and is the most widely water turbine in modern application.
The francis turbine, casing central point puts and is provided with the shaft hole, and the shaft hole interpolation is equipped with the main shaft, and the upside in shaft hole is equipped with the embedded groove, the built-in sealing ring that packs into of embedded groove, and the inner wall of sealing ring is provided with asbestos fiber packing because asbestos fiber packing has good leakproofness, has good lubricity simultaneously, can prevent that the rivers from emerging from the embedded groove, and the weak point of existence has: when the internal water pressure of the mixed-flow water turbine is large, the packing and the sealing ring are not well fixed, the water sealing effect is general, and water still can seep out from gaps between the packing and the main shaft.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a main shaft seal structure of hydraulic turbine to propose packing and sealing ring and not receive good fixed in solving above-mentioned background art, seal the water effect general, water still can follow the problem that packing and main shaft gap are oozed.
In order to achieve the above object, an embodiment of the present invention provides a main shaft sealing structure of a water turbine, including a water turbine housing, a shaft hole disposed at a central position of the water turbine housing, a main shaft inserted in the shaft hole, an embedded groove disposed on the water turbine housing and located above the shaft hole, and a sealing ring disposed in the embedded groove, wherein a material filling groove is disposed on the water turbine housing and located above the embedded groove, a water sealing packing is disposed in the material filling groove, a filler is filled on an upper surface of the water sealing packing in the material filling groove, a pressing ring is inserted in the material filling groove and located above the filler, screw rods are uniformly disposed on the water turbine housing and located outside the pressing ring in an annular manner, a connecting ring is disposed on an outer wall of the pressing ring, and through holes are disposed on the connecting ring and corresponding to the screw rods respectively, the screw rod is worn out and is worn out a section cover that the hole and screw rod wore out and wear out the hole and be equipped with the backing ring, the screw rod passes through nut locking.
Furthermore, the water sealing packing is of a circular ring structure with an L-shaped main view section.
Furthermore, the pressing ring is of a circular ring structure.
Furthermore, an inclined pressing groove is formed in the inner wall of the pressing ring and in a position close to the water sealing packing.
Furthermore, the inclined pressing groove is of a circular groove structure with a right-angled triangle main view section.
Furthermore, the screw and the nut are at least six pairs.
To sum up, the utility model has the advantages of it is following:
first, nut locking screw, the nut supports downwards and presses the backing ring, thereby drive go-between and clamping ring downstream, the clamping ring supports downwards and presses the filler, the filler has good water proof nature, and have the effect of mutual lubrication between the powder, promote to pack and scurry into to other spaces when being supported and pressing, the filler supports and presses the horizontal portion of water packing, the inner wall of vertical portion and filled tank, make the horizontal portion of water packing compress tightly the upper end of sealing ring and the inside bottom in filled tank, the vertical portion of water packing pastes the outer wall of tight main shaft, the closure fastening nature of multiplicable water packing, and the sealing ring sealing position has been stabilized.
The second, when the clamping ring pushed down the filler, the inside annular inclined plane of barocline groove can support down to press the filler to one side, and the water packing position annular that corresponds to the barocline groove is tightly wrapped up in to can make water packing and main shaft cooperation inseparabler, it is better to seal the water nature, thereby when the inside water pressure of mixed flow turbine is great, can effectively prevent rivers from flowing from water packing and main shaft gap.
Therefore, the problem that the packing and the sealing ring are not well fixed, the water sealing effect is general, and water still seeps out from the gap between the packing and the main shaft can be solved.
Drawings
Fig. 1 is a schematic view partially cut away from a front view in one embodiment of the present invention;
fig. 2 is a schematic top view of an embodiment of the present invention;
FIG. 3 is a schematic axial view of a water seal packing according to an embodiment of the present invention;
fig. 4 is a schematic view of a connecting shaft of the pressure ring and the connecting ring according to an embodiment of the present invention.
The hydraulic turbine comprises a water turbine shell body 1, a shaft hole 2, a main shaft 3, an embedded groove 4, a sealing ring 5, a filling groove 6, a water sealing packing 7, a pressing ring 8, an inclined pressing groove 9, a screw rod 10, a connecting ring 11, a through hole 12, a backing ring 13, a nut 14 and a filling material 101.
Detailed Description
Referring to fig. 1, 2 and 3, a main shaft sealing structure of a water turbine comprises a water turbine casing body 1, a shaft hole 2 arranged at the center of the water turbine casing body 1, a main shaft 3 inserted into the shaft hole 2, an embedded groove 4 arranged on the water turbine casing body 1 and located above the shaft hole 2, and a sealing ring 5 arranged in the embedded groove 4, wherein the shaft hole 2 is a circular hole structure, the main shaft 3 is in sliding fit with the shaft hole 2, the embedded groove 4 is an annular groove structure, the embedded groove 4 is in sliding insertion fit with the sealing ring 5, a packing groove 6 is arranged on the water turbine casing body 1 and located above the embedded groove 4, the packing groove 6 is an annular groove structure, a water sealing packing 7 is arranged in the packing groove 6, the lower end of the water sealing packing 7 is in sliding contact with the inner lower end of the packing groove 6, the inner wall of the water sealing packing 7 is in sliding contact with the main shaft 3, the water, the water sealing packing 7 has good wear resistance and lubricity, meanwhile, the water sealing packing 7 has good water resistance due to the fact that the packing is fine inside, the water sealing packing 7 is of a circular ring structure with an L-shaped main view section, the packing 101 is filled on the upper surface of the water sealing packing 7 in the packing groove 6, the packing 101 is spherical graphite powder, the packing 101 has good water resistance due to the fact that powder is fine, the powder particles have a mutual lubricating effect, and the packing 101 is promoted to be pushed into other spaces.
Referring to fig. 1, 2 and 4, a pressing ring 8 is inserted into a position in the packing groove 6 and above the packing 101, the pressing ring 8 is of a circular ring structure, the pressing ring 8 is pressed downwards to further press the packing 101, so that the packing 101 presses against a transverse part and a vertical part of the packing water packing 7, the transverse part of the packing water packing 7 presses against the upper end of the sealing ring 5 and the inner bottom end of the packing groove 6, the vertical part of the packing water packing 7 tightly contacts with the outer wall of the main shaft 3, the sealing tightness of the packing water packing 7 can be improved, the sealing position of the sealing ring 5 is stabilized, an inclined pressing groove 9 is arranged on the inner wall of the pressing ring 8 and close to the packing water packing 7, the inclined pressing groove 9 is of a circular groove structure with a right-angled triangle main view section, when the packing 101 is pressed downwards by the pressing ring 8, the inner circular inclined plane of the inclined pressing groove 9 can obliquely press the packing 101, the part of the packing water packing 7 corresponding to the inclined pressing groove 9 is annularly tightly wrapped, and, the water sealing property is better.
Referring to fig. 1, 2 and 4, on the hydraulic turbine housing body 1, screws 10 are uniformly annularly arranged on the outer side of the pressing ring 8, the lower ends of the screws 10 are welded to the upper end of the hydraulic turbine housing body 1, the outer wall of the pressing ring 8 is provided with a connecting ring 11, the connecting ring 11 is of a circular ring structure, the inner wall of the connecting ring 11 is welded to the outer wall of the pressing ring 8, positions on the connecting ring 11 corresponding to the screws 10 are respectively provided with a through hole 12, the through holes 12 are of a circular hole structure, the screws 10 and the through holes 12 are in sliding insertion fit, when the screws 10 uniformly arranged in a circular shape are inserted into the through holes 12, the pressing position of the pressing ring 8 is stabilized, a section of the screw 10 penetrating through the through hole 12 and the screw 10 penetrating through the through hole 12 is sleeved with a backing ring 13, the backing ring 13 is of a circular ring structure, the screw 10 is locked by a nut 14, the nut 14 locks the screw 10, the screw rod and the nut are six pairs.
The screw 10 is locked by the nut 14, the nut 14 is downwards abutted against the backing ring 13, so that the connecting ring 11 and the pressing ring 8 are driven to move downwards, the pressing ring 8 is downwards abutted against the filler 101, the filler 101 has good water-resisting property, and the particles have a mutual lubricating effect, so that the filler 101 is promoted to enter other spaces when being abutted against, the filler 101 is abutted against the transverse part, the vertical part and the inner wall of the filler groove 6 of the water sealing packing 7, so that the transverse part of the water sealing packing 7 tightly presses the upper end of the sealing ring 5 and the inner bottom end of the filler groove 6, the vertical part of the water sealing packing 7 tightly adheres to the outer wall of the main shaft 3, the sealing tightness of the water sealing packing 7 is improved, the sealing position of the sealing ring 5 is stabilized, when the filler 101 is pressed downwards by the pressing ring 8, the inner annular inclined plane of the inclined pressing groove 9 obliquely downwardly abuts against the filler 101, the annular part of the water sealing packing 7 corresponding to the inclined pressing groove 9 is tightly, and the, the water sealing performance is better, so that when the water pressure in the mixed-flow water turbine is higher, water flow can be effectively prevented from flowing out from the gap between the water sealing packing 7 and the main shaft 3.
While the present invention has been described in detail and with reference to the accompanying drawings, it is not to be considered as limited to the scope of the invention. Various modifications and changes may be made by those skilled in the art without inventive step within the scope of the appended claims.
Claims (6)
1. The utility model provides a main shaft seal structure of hydraulic turbine, includes hydraulic turbine casing body (1), sets up shaft hole (2) of putting at hydraulic turbine casing body (1) central point, alternates main shaft (3) in shaft hole (2), sets up on hydraulic turbine casing body (1) and be located embedded groove (4) of shaft hole (2) upside and install sealing ring (5) in embedded groove (4), its characterized in that: a filler groove (6) is arranged on the water turbine shell body (1) and at the upper side of the embedded groove (4), a water sealing packing (7) is arranged in the packing groove (6), a packing (101) is filled on the upper surface of the water sealing packing (7) in the packing groove (6), a pressing ring (8) is inserted in the packing groove (6) and positioned above the packing (101), the water turbine shell body (1) is annularly and uniformly provided with screw rods (10) at the outer side of the pressing ring (8), the outer wall of the compression ring (8) is provided with a connecting ring (11), the connecting ring (11) is provided with through holes (12) respectively corresponding to the positions of the screws (10), the screw rod (10) is threaded out of the through hole (12), one section of the screw rod (10) which is threaded out of the through hole (12) is sleeved with a backing ring (13), and the screw rod (10) is locked through a nut (14).
2. A main shaft sealing structure of a water turbine according to claim 1, wherein: the water sealing packing (7) is of a circular ring structure with an L-shaped main view section.
3. A main shaft sealing structure of a water turbine according to claim 1, wherein: the pressing ring (8) is of a circular ring structure.
4. A seal structure of a main shaft of a water turbine according to claim 3, wherein: and an inclined pressing groove (9) is arranged on the inner wall of the pressing ring (8) and close to the water sealing packing (7).
5. The seal structure of the main shaft of a water turbine according to claim 4, wherein: the inclined pressing groove (9) is of a circular groove structure with a right-angled triangle main view section.
6. A main shaft sealing structure of a water turbine according to claim 1, wherein: the screw (10) and the nut (14) are at least six pairs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921359512.1U CN210422856U (en) | 2019-08-21 | 2019-08-21 | Main shaft sealing structure of water turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921359512.1U CN210422856U (en) | 2019-08-21 | 2019-08-21 | Main shaft sealing structure of water turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210422856U true CN210422856U (en) | 2020-04-28 |
Family
ID=70363573
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921359512.1U Active CN210422856U (en) | 2019-08-21 | 2019-08-21 | Main shaft sealing structure of water turbine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210422856U (en) |
-
2019
- 2019-08-21 CN CN201921359512.1U patent/CN210422856U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN210422856U (en) | Main shaft sealing structure of water turbine | |
| CN108547953A (en) | A kind of sealing device for mixer | |
| CN202252092U (en) | Ball valve provided with double radial bearing valve rod | |
| CN209557227U (en) | A kind of sealing structure of plunger pump | |
| CN214838384U (en) | F-shaped grinding head seal of ball mill | |
| CN206845905U (en) | A kind of bearing chamber labyrinth seal | |
| CN204941427U (en) | Automatic compensation type gapless well mouth sealing device | |
| CN210084269U (en) | Bearing built-in structure at driven end of screw conveyor | |
| CN201031764Y (en) | Hydroturbine chief axis non-contact type metallic sealing structure | |
| CN203570528U (en) | Non-leakage piston compressor padding | |
| CN112814988A (en) | Bolt sealing structure of wet overflow type rod mill and wet overflow type rod mill | |
| CN201487211U (en) | Bearing combination oil seal | |
| CN213298820U (en) | Double-end-face mechanical sealing device for fluoroplastic pump | |
| CN208417540U (en) | A kind of sealing device for mixer | |
| CN202646137U (en) | Shaft-end sealing device of centrifugal type gas compression equipment | |
| CN201307800Y (en) | A water-filling motor bearing base mechanism of submersible pump | |
| CN202228680U (en) | Basic shaft type mechanical sealing device | |
| CN214789051U (en) | Mechanical seal for centrifuge | |
| CN218089902U (en) | Improved structure for enhancing sealing performance of spinning assembly | |
| CN214499737U (en) | Bolt sealing structure of wet overflow type rod mill and wet overflow type rod mill | |
| CN216407249U (en) | Sealing structure of high-speed high-pressure pump | |
| CN217207728U (en) | Shaft end sealing device of electric slurry pump | |
| CN207331240U (en) | A kind of axle sleeve leak-proof arrangement and sewing machine | |
| CN204372167U (en) | A kind of efficient shaft seal | |
| CN202646136U (en) | Sealing structure for pump |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |