CN115111267B - Mixed-flow turbine water guide bearing structure - Google Patents
Mixed-flow turbine water guide bearing structure Download PDFInfo
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- CN115111267B CN115111267B CN202210646103.XA CN202210646103A CN115111267B CN 115111267 B CN115111267 B CN 115111267B CN 202210646103 A CN202210646103 A CN 202210646103A CN 115111267 B CN115111267 B CN 115111267B
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- sealing cover
- bearing body
- sealing washer
- component
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 36
- 238000007789 sealing Methods 0.000 claims abstract description 96
- 238000001816 cooling Methods 0.000 claims abstract description 32
- 239000002131 composite material Substances 0.000 claims abstract description 31
- 230000006835 compression Effects 0.000 claims abstract description 16
- 238000007906 compression Methods 0.000 claims abstract description 16
- 238000001514 detection method Methods 0.000 claims abstract description 10
- 239000000110 cooling liquid Substances 0.000 claims description 21
- 150000001875 compounds Chemical class 0.000 claims description 2
- 230000005540 biological transmission Effects 0.000 abstract description 19
- 238000000034 method Methods 0.000 abstract description 8
- 230000008569 process Effects 0.000 abstract description 5
- 230000008859 change Effects 0.000 abstract description 3
- 238000012544 monitoring process Methods 0.000 abstract description 3
- 230000017525 heat dissipation Effects 0.000 description 4
- 235000001674 Agaricus brunnescens Nutrition 0.000 description 3
- 230000009471 action Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000011897 real-time detection Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- 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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/02—Parts of sliding-contact bearings
- F16C33/04—Brasses; Bushes; Linings
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- 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
- F03B11/06—Bearing arrangements
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- 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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/72—Sealings
- F16C33/74—Sealings of sliding-contact bearings
- F16C33/741—Sealings of sliding-contact bearings by means of a fluid
-
- 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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C37/00—Cooling of bearings
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/0009—Force sensors associated with a bearing
-
- 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
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Analytical Chemistry (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Hydraulic Turbines (AREA)
Abstract
The invention relates to the technical field of water turbines and discloses a water guide bearing structure of a mixed flow water turbine, which comprises a bearing body, wherein an upper sealing cover piece and a lower sealing cover piece are respectively fixedly arranged at the top and the bottom of the bearing body, a bearing bush component is sleeved on the inner side of the bearing body, a composite cooling groove group is formed in the inner side of the bearing bush component, and a first yielding hole and a second yielding hole are respectively formed in the inner side of the bottom of the bearing bush component and the inner side of the bottom of the bearing body. According to the invention, after the pressure type detection component is matched with the second yielding hole in the bearing body and the first yielding hole in the bearing bush component, an offset monitoring structure can be formed, and then in the process of being used together with the bearing body, the bearing bush component and the mixed flow water turbine transmission shaft, the compression condition of the bearing bush in the bearing bush component is detected in real time, so that the centrifugal deflection condition during the rotation transmission of the mixed flow water turbine transmission shaft is judged according to the change of pressure, faults are found in time, and loss is reduced.
Description
Technical Field
The invention relates to the technical field of water turbines, in particular to a mixed-flow water turbine water guide bearing structure.
Background
The existing mixed-flow water turbine is also called Francis water turbine, belongs to one of the reaction water turbines, has compact structure and higher efficiency, can adapt to a wide water head range, and is one of the water turbine types widely adopted in various countries in the world at present.
The main components of the mixed flow water turbine comprise a volute, a seat ring, a water guide mechanism, a top cover, a rotating wheel, a main shaft, a water guide bearing, a bottom ring, a draft tube and the like, wherein the water guide bearing comprises a bearing bush sleeved on the main shaft and a matched lubricating oil system, the bearing bush and the main shaft are concentrically arranged, a gap with the same distance is formed between an inner surface of the bearing bush and an outer surface of the main shaft, the technical improvement of the water guide bearing is focused on the heat dissipation aspect of the water guide bearing at present, but in the actual use process, the applicant finds that the prior equipment has no corresponding detection structure for the use state of the water guide bearing after being connected with the shaft body, the operation control of workers on the water guide bearing is not convenient, and the abrasion cannot be known in time, so that the water guide bearing structure of the mixed flow water turbine is provided for solving the problems.
Disclosure of Invention
The invention provides a mixed-flow water turbine water guide bearing structure, which solves the problems in the prior art.
The invention provides the following technical scheme: the utility model provides a francis turbine water guide bearing structure, includes the bearing body, the top and the bottom of bearing body are fixed mounting respectively have sealed lid spare and sealed lid spare down, and the inboard of bearing body has cup jointed the axle bush part, compound cooling tank group has been seted up to the inboard of axle bush part, the inboard of axle bush part bottom and the inboard of bearing body bottom have been seted up respectively first hole of stepping down and the hole of stepping down of second, and the hole of stepping down of first and the hole of stepping down of second are aligned, be provided with pressure type detection part between the hole of stepping down of first and the hole of stepping down of second.
And the bottom of the upper sealing cover piece and the top of the bearing body, the top of the lower sealing cover piece and the bottom of the bearing body are fixed through screws, and the inner side of the top of the upper sealing cover piece and the inner side of the bottom of the lower sealing cover piece are fixedly sleeved with second sealing rings.
And the inner part of one side of the lower sealing cover piece and the inner side of one side of the upper sealing cover piece are fixedly sleeved with a cooling liquid outlet pipe and a cooling liquid inlet pipe respectively, and composite sealing components are arranged between the top of the lower sealing cover piece and the bottom of the bearing body and between the bottom of the upper sealing cover piece and the top of the bearing body.
The composite sealing component comprises a composite sealing component and is characterized in that the composite sealing component comprises two first sealing rings and two annular plates, the surfaces of the two first sealing rings are respectively and fixedly connected with the bottom surface of an upper sealing cover piece and the top surface of a lower sealing cover piece, compression springs are fixedly connected between the surfaces of the first sealing rings and the inner wall of the upper sealing cover piece, compression springs are fixedly connected between the surfaces of the first sealing rings and the inner wall of the lower sealing cover piece, the annular plates are respectively and fixedly sleeved on the inner side of the upper sealing cover piece and the inner side of the lower sealing cover piece, and the surfaces of the annular plates are tightly attached to the surfaces of the first sealing rings.
The bearing bush component is carefully selected, the bearing bush component is assembled by four equally-divided bearing bushes, a composite connecting piece is arranged between the four equally-divided bearing bushes and the bearing body, a countersunk hole is clamped on the outer side of the composite connecting piece and is formed in the inner wall of the bearing body, the composite connecting piece is composed of a threaded rod and an arc-shaped end, a straight groove is formed in the inner side of one end of the arc-shaped end, and the threaded rod penetrates through the countersunk hole to be connected with the inner side of the bearing bush in a threaded mode.
The method is characterized in that the inner walls of four bearing bushes in the bearing bush part are well selected, a composite cooling groove group is formed by a first cooling groove and a second cooling groove, the first cooling groove penetrates through the bearing bushes for a direct current groove, and the second cooling groove is a trapezoid groove and is formed in the inner wall of the middle of the bearing bushes.
The pressure type detection component is composed of a pressure sensor, a T-shaped hollow sleeve, a mushroom-shaped pressing rod and a rotating shaft, the pressure sensor and the T-shaped hollow sleeve are fixedly sleeved on the inner side of a second abdicating hole, the bottom of the mushroom-shaped pressing rod is movably sleeved on the inner side of the T-shaped hollow sleeve, the top of the mushroom-shaped pressing rod is clamped on the inner side of the first abdicating hole, the rotating shaft is fixedly connected to the surface of the middle of the mushroom-shaped pressing rod, one end of the rotating shaft is clamped on the inner side of the top of the T-shaped hollow sleeve, the top of the mushroom-shaped pressing rod is hemispherical, and the bottom of the mushroom-shaped pressing rod is elliptic cone-shaped.
The invention has the following beneficial effects:
1. According to the invention, after the pressure type detection component is matched with the second yielding hole in the bearing body and the first yielding hole in the bearing bush component, an offset monitoring structure can be formed, and then in the process of being used together with the bearing body, the bearing bush component and the mixed flow water turbine transmission shaft, the compression condition of the bearing bush in the bearing bush component is detected in real time, so that the centrifugal deflection condition during the rotation transmission of the mixed flow water turbine transmission shaft is judged according to the change of pressure, faults are found in time, and loss is reduced.
2. According to the invention, through the composite cooling groove group, the contact area of the bearing bush part and cooling liquid is expanded and the heat dissipation efficiency is improved under the conditions that the bearing bush part and the mixed flow water turbine transmission shaft have cooling gaps, the bearing bush part stably supports and constrains the mixed flow water turbine transmission shaft and the like.
3. According to the invention, through the two groups of composite sealing components, the pressure type sealing can be carried out on the cooling space formed by the composite cooling groove group, the upper sealing cover piece, the lower sealing cover piece, the cooling liquid inlet pipe and the cooling liquid outlet pipe, so that the sealing performance of cooling operation is fully ensured, and the oil leakage probability is reduced.
Drawings
FIG. 1 is a schematic cross-sectional view of a bushing component of the present invention;
FIG. 2 is a schematic cross-sectional view of the structure of the present invention;
FIG. 3 is a schematic front view of the structure of the present invention;
FIG. 4 is a schematic bottom view of a bushing component of the present invention;
FIG. 5 is an enlarged schematic view of the structure of the present invention at A in FIG. 1;
fig. 6 is an enlarged schematic view of the structure of the present invention at B in fig. 2.
In the figure: 1. a bearing body; 2. a bushing member; 3. an upper sealing cover member; 4. a lower sealing cover member; 5. a composite cooling groove group; 51. a first cooling tank; 52. a second cooling tank; 6. a first relief hole; 7. a second relief hole; 8. a pressure type detecting member; 81. a pressure sensor; 82. t-shaped hollow sleeve; 83. a mushroom-shaped compression bar; 84. a rotation shaft; 9. a composite seal member; 91. a first seal ring; 92. a collar plate; 93. a compression spring; 10. a cooling liquid inlet pipe; 11. a cooling liquid outlet pipe; 12. a second seal ring; 13. a composite connector.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1,2 and 3, a water guide bearing structure of a francis turbine includes a bearing body 1, an upper sealing cover 3 and a lower sealing cover 4 are fixedly installed at the top and the bottom of the bearing body 1 respectively, the bottom of the upper sealing cover 3 and the top of the bearing body 1, the top of the lower sealing cover 4 and the bottom of the bearing body 1 are all fixed through screws, and are fixed through prefabricated member screws, so that the assembly of workers is facilitated, the tightness of structural connection is ensured, the processing cost is controlled, the inner side of the top of the upper sealing cover 3 and the inner side of the bottom of the lower sealing cover 4 are fixedly sleeved with second sealing rings 12, and the connection gaps between the upper sealing cover 3 and a transmission shaft of the francis turbine and the connection gaps between the lower sealing cover 4 and the transmission shaft of the francis turbine can be filled in a targeted manner.
Referring to fig. 2 and 3, the inner part of one side of the lower sealing cover 4 and the inner side of one side of the upper sealing cover 3 are fixedly sleeved with a cooling liquid outlet pipe 11 and a cooling liquid inlet pipe 10 respectively, and a composite sealing component 9 is arranged between the top of the lower sealing cover 4 and the bottom of the bearing body 1 and between the bottom of the upper sealing cover 3 and the top of the bearing body 1, and the cooling liquid outlet pipe 11 and the cooling liquid inlet pipe 10 provide a flow channel and a backflow channel for cooling and conveying of a subsequent external cooling device.
Referring to fig. 2 and 6, the two sets of composite sealing components 9 each include two first sealing rings 91 and two annular plates 92, the surfaces of the two first sealing rings 91 are respectively and fixedly connected to the bottom surface of the upper sealing cover 3 and the top surface of the lower sealing cover 4, the first sealing ring 91 on the bottom surface of the upper sealing cover 3 is fixedly connected with a compression spring 93 between the surface of the first sealing ring 91 and the inner wall of the upper sealing cover 3, and similarly, the first sealing ring 91 on the bottom surface of the lower sealing cover 4 is fixedly connected with the compression spring 93 between the surface of the first sealing ring 91 and the inner wall of the lower sealing cover 4, the two annular plates 92 are respectively and fixedly sleeved on the inner side of the upper sealing cover 3 and the inner side of the lower sealing cover 4, the surfaces of the annular plates 92 are tightly attached to the surfaces of the first sealing rings 91, and the two sets of composite sealing components 9 can form a pressure type sealing for the upper sealing cover 3, the lower sealing cover 4, the cooling liquid inlet pipe 10 and the cooling liquid outlet pipe 11, so that the sealing performance of the cooling operation is fully ensured, and the oil leakage probability is reduced.
Referring to fig. 3 and 4, the bearing shell component 2 is sleeved on the inner side of the bearing body 1, the bearing shell component 2 is assembled by four equally-divided bearing shells, a composite connecting piece 13 is arranged between the four equally-divided bearing shells and the bearing body 1, a countersink is clamped on the outer side of the composite connecting piece 13, the countersink is formed on the inner wall of the bearing body 1, the composite connecting piece 13 consists of a threaded rod and an arc-shaped end, a character groove is formed on the inner side of one end of the arc-shaped end, the threaded rod penetrates through the countersink and is in threaded connection with the inner side of the bearing shell, and the composite connecting piece 13 can provide hidden installation for installation between the bearing body 1 and the bearing shell component 2, so that the appearance of the whole device is improved.
Referring to fig. 1,2 and 4, a composite cooling groove set 5 is formed on the inner side of the bearing bush part 2, the inner walls of four bearing bushes inside the bearing bush part 2 are all provided with the composite cooling groove set 5, the composite cooling groove set 5 is composed of a first cooling groove 51 and a second cooling groove 52, the first cooling groove 51 is a direct-current groove penetrating through the bearing bush, the second cooling groove 52 is a trapezoid groove formed on the inner wall of the middle part of the bearing bush, and the composite cooling groove set 5 expands the contact area between the bearing bush part 2 and cooling liquid and improves the heat dissipation efficiency under the conditions that a cooling gap exists between the bearing bush part 2 and a transmission shaft of a mixed-flow water turbine, the bearing bush part 2 stably supports and constrains the transmission shaft of the mixed-flow water turbine, and the like.
Referring to fig. 1 and 5, a first relief hole 6 and a second relief hole 7 are respectively formed on the inner side of the bottom of the bearing bush part 2 and the inner side of the bottom of the bearing body 1, the first relief hole 6 is aligned with the second relief hole 7, a pressure type detection part 8 is arranged between the first relief hole 6 and the second relief hole 7, the pressure type detection part 8 consists of a pressure sensor 81, a T-shaped hollow sleeve 82, a mushroom-shaped compression bar 83 and a rotation shaft 84, the pressure sensor 81 and the T-shaped hollow sleeve 82 are fixedly sleeved on the inner side of the second relief hole 7, the bottom of the mushroom-shaped compression bar 83 is movably sleeved on the inner side of the T-shaped hollow sleeve 82, the top of the mushroom-shaped compression bar 83 is clamped on the inner side of the first relief hole 6, the fixed surface in middle part of mushroom depression bar 83 is connected with rotation axis 84, the inboard at T type cavity sleeve pipe 82 top of one end joint of rotation axis 84, mushroom depression bar 83's top is hemispherical, mushroom depression bar 83's bottom is oval taper, pressure detection part 8 cooperation bearing body 1 inside the second hole 7 of stepping down, bearing bush part 2 inside first hole 6 of stepping down is assembled jointly after, can form the skew monitoring structure, follow-up and bearing body 1, bearing bush part 2 and the common use of francis turbine transmission shaft in, the pressurized condition real-time detection of the axle bush of bearing bush part 2 inside, and then the centrifugal deflection condition when judging francis turbine transmission shaft rotation transmission according to the change of pressure, in time discover the trouble, reduce the loss.
Working principle: the number of the pressure type detecting parts 8 can be set to be a plurality, in the following embodiments, the pressure type detecting parts 8 are set to be four numbers corresponding to four bearing bushes inside the bearing bush part 2 respectively, when the amplitude of centrifugal deflection during rotation transmission of a transmission shaft of the mixed flow hydraulic turbine is biased to one of the four bearing bushes inside the bearing bush part 2 in use, for the pressure type detecting parts 8, the internal mushroom-shaped compression bars 83 are subjected to larger impact force relative to the other three mushroom-shaped compression bars 83, so that the corresponding pressure sensor 81 has a pressure loss time longer than that of the other three mushroom-shaped compression bars 83, the frequency block is used, and then a follow-up staff can timely judge the actual stress condition of the four bearing bushes inside the bearing bush part 2 and the centrifugal deflection condition during rotation transmission of the transmission shaft of the mixed flow hydraulic turbine;
When the bearing bush component 2 is required to be cooled, the external cooling device inputs cooling liquid into the composite cooling groove group 5, the upper sealing cover piece 3, the lower sealing cover piece 4, the cooling liquid inlet pipe 10 and the cooling liquid outlet pipe 11 through the cooling liquid inlet pipe 10 to form a cooling space, and the composite yielding groove structural formula of the composite cooling groove group 5 can expand the contact area of the bearing bush component 2 and the cooling liquid and improve the heat dissipation efficiency.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Meanwhile, in the drawings of the present invention, the filling pattern is only for distinguishing the layers, and is not limited in any way.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (3)
1. The utility model provides a mixed flow hydraulic turbine water guide bearing structure, includes bearing body (1), its characterized in that: the top and the bottom of the bearing body (1) are respectively and fixedly provided with an upper sealing cover piece (3) and a lower sealing cover piece (4), the inner side of the bearing body (1) is sleeved with a bearing bush component (2), the inner side of the bearing bush component (2) is provided with a composite cooling groove group (5), the inner side of the bottom of the bearing bush component (2) and the inner side of the bottom of the bearing body (1) are respectively provided with a first yielding hole (6) and a second yielding hole (7), the first yielding hole (6) is aligned with the second yielding hole (7), and a pressure type detection component (8) is arranged between the first yielding hole (6) and the second yielding hole (7);
The pressure type detection component (8) consists of a pressure sensor (81), a T-shaped hollow sleeve (82), a mushroom-shaped pressing rod (83) and a rotating shaft (84), wherein the pressure sensor (81) and the T-shaped hollow sleeve (82) are fixedly sleeved on the inner side of the second abdicating hole (7), the bottom of the mushroom-shaped pressing rod (83) is movably sleeved on the inner side of the T-shaped hollow sleeve (82), the top of the mushroom-shaped pressing rod (83) is clamped on the inner side of the first abdicating hole (6), the surface of the middle part of the mushroom-shaped pressing rod (83) is fixedly connected with the rotating shaft (84), and one end of the rotating shaft (84) is clamped on the inner side of the top of the T-shaped hollow sleeve (82);
The inside of one side of the lower sealing cover piece (4) and the inside of one side of the upper sealing cover piece (3) are respectively fixedly sleeved with a cooling liquid outlet pipe (11) and a cooling liquid inlet pipe (10), and a composite sealing component (9) is arranged between the top of the lower sealing cover piece (4) and the bottom of the bearing body (1) and between the bottom of the upper sealing cover piece (3) and the top of the bearing body (1);
The inside of two sets of compound sealing component (9) is all including two first sealing washer (91) and two ring cover boards (92), and the surface of two first sealing washer (91) is fixed connection respectively in the bottom surface of last sealing washer (3) and the top surface of lower sealing washer (4), and install first sealing washer (91) of sealing washer (3) bottom surface, fixedly connected with compression spring (93) between the inner wall of its surface and last sealing washer (3), and similarly, install first sealing washer (91) of sealing washer (4) bottom surface, also fixedly connected with compression spring (93) between the inner wall of its surface and lower sealing washer (4), two ring cover boards (92) are fixed respectively cup joints in the inboard of last sealing washer (3) and the inboard of lower sealing washer (4), the surface of ring cover board (92) is closely laminated with the surface of first sealing washer (91).
2. The francis turbine guide bearing structure of claim 1, wherein: the bottom of the upper sealing cover (3) and the top of the bearing body (1), the top of the lower sealing cover (4) and the bottom of the bearing body (1) are all fixed through screws, and the inner side of the top of the upper sealing cover (3) and the inner side of the bottom of the lower sealing cover (4) are fixedly sleeved with second sealing rings (12).
3. The francis turbine guide bearing structure of claim 1, wherein: the top of the mushroom-shaped pressing rod (83) is hemispherical, and the bottom of the mushroom-shaped pressing rod (83) is elliptic cone-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210646103.XA CN115111267B (en) | 2022-06-08 | 2022-06-08 | Mixed-flow turbine water guide bearing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210646103.XA CN115111267B (en) | 2022-06-08 | 2022-06-08 | Mixed-flow turbine water guide bearing structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115111267A CN115111267A (en) | 2022-09-27 |
| CN115111267B true CN115111267B (en) | 2024-07-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210646103.XA Active CN115111267B (en) | 2022-06-08 | 2022-06-08 | Mixed-flow turbine water guide bearing structure |
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| CN (1) | CN115111267B (en) |
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| RU2752741C1 (en) * | 2020-12-01 | 2021-07-30 | Федеральное государственное бюджетное образовательное учреждение высшего образования "ОРЛОВСКИЙ ГОСУДАРСТВЕННЫЙ УНИВЕРСИТЕТ имени И.С. ТУРГЕНЕВА" (ОГУ им. И.С. Тургенева) | Slide bearing |
| CN216478464U (en) * | 2021-03-24 | 2022-05-10 | 峨眉山市驰骋机械制造有限公司 | Water cooling equipment for water turbine |
| CN215058926U (en) * | 2021-08-02 | 2021-12-07 | 湖州润博环保设备有限公司 | Steam turbine bearing bush |
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2022
- 2022-06-08 CN CN202210646103.XA patent/CN115111267B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN205779432U (en) * | 2016-05-20 | 2016-12-07 | 湖南云箭科技有限公司 | A kind of impulse turbine and bearing thereof |
| JP2018096315A (en) * | 2016-12-15 | 2018-06-21 | 関西電力株式会社 | Liquid supply system for hydraulic power generation and method for supplying liquid to hydraulic turbine generator |
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