CN115111267A - Water guide bearing structure of mixed-flow water turbine - Google Patents
Water guide bearing structure of mixed-flow water turbine Download PDFInfo
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- CN115111267A CN115111267A CN202210646103.XA CN202210646103A CN115111267A CN 115111267 A CN115111267 A CN 115111267A CN 202210646103 A CN202210646103 A CN 202210646103A CN 115111267 A CN115111267 A CN 115111267A
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- bearing bush
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title abstract description 32
- 238000007789 sealing Methods 0.000 claims abstract description 85
- 238000001816 cooling Methods 0.000 claims abstract description 40
- 239000002131 composite material Substances 0.000 claims abstract description 28
- 238000001514 detection method Methods 0.000 claims abstract description 12
- 235000001674 Agaricus brunnescens Nutrition 0.000 claims description 14
- 150000001875 compounds Chemical class 0.000 claims description 9
- 230000006835 compression Effects 0.000 claims description 7
- 238000007906 compression Methods 0.000 claims description 7
- 239000002826 coolant Substances 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims description 2
- 239000007788 liquid Substances 0.000 claims 2
- 230000005540 biological transmission Effects 0.000 abstract description 19
- 230000008859 change Effects 0.000 abstract description 3
- 238000012544 monitoring process Methods 0.000 abstract description 3
- 239000000110 cooling liquid Substances 0.000 description 17
- 238000000034 method Methods 0.000 description 5
- 230000009471 action Effects 0.000 description 3
- 230000017525 heat dissipation Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011897 real-time detection Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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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
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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
- 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
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- 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 mixed-flow water turbine water guide bearing structure which comprises a bearing body, wherein an upper sealing cover piece and a lower sealing cover piece are fixedly installed at the top and the bottom of the bearing body respectively, a bearing bush component is sleeved on the inner side of the bearing body, a composite cooling groove group is arranged on the inner side of the bearing bush component, and a first abdicating hole and a second abdicating hole are formed in the inner side of the bottom of the bearing bush component and the inner side of the bottom of the bearing body respectively. According to the invention, the pressure type detection component is assembled together with the second abdicating hole in the bearing body and the first abdicating hole in the bearing bush component, so that an offset monitoring structure can be formed, and then, in the common use of the pressure type detection component, the bearing bush component and the mixed-flow water turbine transmission shaft, the pressure condition of the bearing bush in the bearing bush component is detected in real time, and further, the centrifugal offset condition of the mixed-flow water turbine transmission shaft during rotation transmission is judged according to the pressure change, so that the fault is found in time, and the loss is reduced.
Description
Technical Field
The invention relates to the technical field of water turbines, in particular to a mixed-flow water turbine guide bearing structure.
Background
The existing mixed-flow water turbine is also called Francis water turbine, belongs to one of reaction water turbines, has compact structure and higher efficiency, can adapt to a wide water head range, and is one of water turbine types widely adopted in all countries in the world at present.
The main components of the mixed flow water turbine comprise a volute, a seat ring, a water distributor, a top cover, a rotating wheel, a main shaft, a water guide bearing, a bottom ring, a tail water pipe 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, and gaps with the same distance are formed between the inner surface of the bearing bush and the outer surface of the main shaft.
Disclosure of Invention
The invention provides a mixed-flow water turbine water guide bearing structure, which solves the problems in the background technology.
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 fixed mounting respectively have last sealed cover spare and lower sealed cover spare, 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 has seted up first hole and the second hole of stepping down respectively with the inboard of bearing body bottom, and just first hole and the second hole of stepping down is aligned, first hole and the second of stepping down is provided with pressure type detection part between the hole.
Carefully, all fix through the screw between the bottom of last sealed lid and the top of bearing body, between the top of lower sealed lid and the bottom of bearing body, and the inboard of going up sealed lid top and the inboard of lower sealed lid bottom all fixedly cup joints the second sealing washer.
Carefully, the inside of one side of the lower sealing cover piece and the inner side of one side of the upper sealing cover piece are respectively fixedly sleeved with a cooling liquid outlet pipe and a cooling liquid inlet pipe, and composite sealing parts 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.
Carefully, two sets of the inside of compound seal part all includes two first sealing washers and two ring housing plates, and the surface of two first sealing washers is fixed connection respectively in the bottom surface of last sealed lid and the top surface of sealed lid down, and installs the first sealing washer of sealed lid bottom surface, and fixedly connected with compression spring between its surface and the inner wall of sealed lid down, and in the same way, the first sealing washer of sealed lid bottom surface under the installation, also fixedly connected with compression spring between its surface and the inner wall of sealed lid down, two ring housing plates are fixed cup joints the inboard of sealed lid under and in the inboard of sealed lid down respectively, the surface of ring housing plate closely laminates with the surface of first sealing washer.
The bearing bush component is carefully selected, and the axle bush part is assembled by four equant axle bushes, and all is provided with compound connecting piece between four equant axle bushes and the bearing body, compound connecting piece's outside joint has the counter sink, and the counter sink is seted up on the inner wall of bearing body, compound connecting piece comprises threaded rod and arcuation end, and the inboard of arcuation end one end has seted up a word groove, and the threaded rod then runs through counter sink threaded connection in the inboard of axle bush.
Carefully selecting, the inner walls of four bearing bushes in the bearing bush component are all provided with a compound cooling groove group, the compound cooling groove group consists of a first cooling groove and a second cooling groove, the first cooling groove is a straight-flow groove penetrating through the bearing bushes, and the second cooling groove is a trapezoidal groove arranged on the inner wall in the middle of the bearing bushes.
Carefully, pressure type detection unit comprises pressure sensor, T type cavity sleeve pipe, mushroom depression bar and rotation axis, and pressure sensor and T type cavity sleeve pipe all fixed cup joint in the inboard in the second hole of stepping down, the bottom activity of mushroom depression bar cup joints survey in T type cavity sleeve pipe, the top joint of mushroom depression bar is in the inboard in the first hole of stepping down, the fixed surface at mushroom depression bar middle part is connected with the rotation axis, the one end joint of rotation axis is in the inboard at T type cavity sleeve pipe top, the top of mushroom depression bar is hemispherical, and the bottom of mushroom depression bar is oval coniform.
The invention has the following beneficial effects:
1. according to the invention, the pressure type detection component is matched with the second abdicating hole in the bearing body and the first abdicating hole in the bearing bush component to be assembled together, so that an offset monitoring structure can be formed, the pressure condition of the bearing bush in the bearing bush component is detected in real time in the subsequent common use with the bearing body, the bearing bush component and the mixed flow water turbine transmission shaft, the centrifugal deflection condition of the mixed flow water turbine transmission shaft during rotation transmission is further judged according to the pressure change, the fault is found in time, and the loss is reduced.
2. According to the composite cooling slot set, under the conditions that a cooling gap exists between the bearing bush component and the transmission shaft of the mixed-flow water turbine, the bearing bush component stably supports and constrains the transmission shaft of the mixed-flow water turbine and the like, the contact area between the bearing bush component and cooling liquid is expanded, and the heat dissipation efficiency is improved.
3. According to the invention, by arranging the two groups of composite sealing components, pressure type sealing can be carried out on a cooling space formed by the composite cooling tank group, the upper sealing cover component, the lower sealing cover component, 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 bearing shell component according to 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 bearing shell component according to the present invention;
FIG. 5 is an enlarged schematic view of the invention at A in FIG. 1;
fig. 6 is an enlarged schematic view of the invention at B in fig. 2.
In the figure: 1. a bearing body; 2. a bearing shell member; 3. an upper sealing cover member; 4. a lower seal cover; 5. a composite cooling tank group; 51. a first cooling tank; 52. a second cooling tank; 6. a first abdicating hole; 7. a second abdicating hole; 8. a pressure type detection member; 81. a pressure sensor; 82. a T-shaped hollow sleeve; 83. a mushroom shaped press bar; 84. a rotating shaft; 9. a composite seal member; 91. a first seal ring; 92. a ring sleeve plate; 93. a compression spring; 10. a cooling liquid inlet pipe; 11. a coolant outlet pipe; 12. a second seal ring; 13. a composite connector.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, 2 and 3, a turbine guide bearing structure of a francis turbine comprises a bearing body 1, an upper sealing cover member 3 and a lower sealing cover member 4 are respectively and fixedly installed at the top and the bottom of the bearing body 1, the bottom of the upper sealing cover member 3 and the top of the bearing body 1, the top of the lower sealing cover member 4 and the bottom of the bearing body 1 are fixed by screws, the screw is fixed by the prefabricated part, so that the assembly of workers is facilitated, the sealing performance of structural connection is ensured, and secondly, the processing cost is controlled, the inner side of the top of the upper sealing cover component 3 and the inner side of the bottom of the lower sealing cover component 4 are fixedly sleeved with second sealing rings 12, and the two groups of second sealing rings 12 can be used for filling the connection gap between the subsequent upper sealing cover component 3 and the mixed-flow water turbine transmission shaft and the connection gap between the lower sealing cover component 4 and the mixed-flow water turbine transmission shaft in a targeted manner.
Referring to fig. 2 and 3, a cooling liquid outlet pipe 11 and a cooling liquid inlet pipe 10 are respectively fixedly sleeved on the inner side of one side of the lower sealing cover member 4 and the inner side of one side of the upper sealing cover member 3, a composite sealing component 9 is respectively arranged between the top of the lower sealing cover member 4 and the bottom of the bearing body 1 and between the bottom of the upper sealing cover member 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 return channel for cooling and conveying of a subsequent external cooling device.
Referring to fig. 2 and 6, the two sets of composite sealing members 9 each include two first sealing rings 91 and two annular sleeve plates 92, the surfaces of the two first sealing rings 91 are fixedly connected to the bottom surface of the upper sealing cover 3 and the top surface of the lower sealing cover 4, respectively, the first sealing ring 91 on the bottom surface of the upper sealing cover 3 is mounted, a compression spring 93 is fixedly connected between the surface of the first sealing ring 91 on the bottom surface of the lower sealing cover 4 and the inner wall of the lower sealing cover 4, similarly, the first sealing ring 91 on the bottom surface of the lower sealing cover 4 is mounted, a compression spring 93 is also fixedly connected between the surface of the first sealing ring 91 and the inner wall of the lower sealing cover 4, the two annular sleeve plates 92 are fixedly sleeved on the inner side of the upper sealing cover 3 and the inner side of the lower sealing cover 4, respectively, the surface of the annular sleeve plate 92 is tightly attached to the surface of the first sealing ring 91, and the two sets of composite sealing members 9 can form a pressure-type seal for the cooling space formed by the upper sealing cover 3, the lower sealing cover 4, the cooling liquid inlet pipe 10 and the cooling liquid outlet 11, the sealing performance of cooling operation is fully guaranteed, and the oil leakage probability is reduced.
Referring to fig. 3 and 4, a bearing bush component 2 is sleeved on the inner side of a bearing body 1, the bearing bush component 2 is assembled by four equally divided bearing bushes, a composite connecting piece 13 is arranged between each of the four equally divided bearing bushes and the bearing body 1, a counter bore is clamped on the outer side of the composite connecting piece 13 and is formed in the inner wall of the bearing body 1, the composite connecting piece 13 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, the threaded rod penetrates through the counter bore and is in threaded connection with the inner side of the bearing bush, the composite connecting piece 13 can provide hidden installation between the bearing body 1 and the bearing bush component 2, and the attractiveness 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 a bearing bush component 2, the composite cooling groove set 5 is formed on the inner walls of four bearing bushes inside the bearing bush component 2, 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 straight-flow groove penetrating through the bearing bush, the second cooling groove 52 is a trapezoidal 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 component 2 and a coolant under the conditions that a cooling gap exists between the bearing bush component 2 and a mixed flow water turbine transmission shaft, the bearing bush component 2 stably supports and constrains the mixed flow water turbine transmission shaft, and the like, and improves the heat dissipation efficiency.
Referring to fig. 1 and 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 abdicating hole 6 and a second abdicating hole 7, the first abdicating hole 6 is aligned with the second abdicating hole 7, a pressure type detecting component 8 is arranged between the first abdicating hole 6 and the second abdicating hole 7, the pressure type detecting component 8 is composed of a pressure sensor 81, a T-shaped hollow sleeve 82, a mushroom-shaped press rod 83 and a rotating shaft 84, 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 press rod 83 is movably sleeved on the inner side of the T-shaped hollow sleeve 82, the top of the mushroom-shaped press rod 83 is clamped on the inner side of the first abdicating hole 6, the surface of the middle of the mushroom-shaped press rod 83 is fixedly connected with the rotating shaft 84, one end of the rotating shaft 84 is clamped on the inner side of the top of the T-shaped hollow sleeve 82, the top of the mushroom-shaped press rod 83 is hemispherical, the bottom of mushroom depression bar 83 is the ellipse circular cone form, pressure type detection part 8 cooperates the inside second hole of stepping down 7 of bearing body 1, the inside first hole of stepping down 6 of axle bush part 2 assembles the back jointly, can form the skew monitoring structure, follow-up and bearing body 1, axle bush part 2 and the joint use of mixed flow turbine transmission shaft, the pressurized condition real-time detection to the axle bush of axle bush part 2 inside, and then the centrifugal beat condition when judging the rotatory transmission of mixed flow turbine transmission shaft according to the change of pressure, in time discover the trouble, reduce the loss.
The working principle is as follows: the number of the pressure type detection parts 8 can be set to be multiple, in the following embodiment, the pressure type detection parts 8 are set to be four corresponding to four bearing bushes inside the bearing bush part 2 respectively, when the centrifugal runout amplitude during the rotation transmission of the francis turbine transmission shaft deviates to one of the four bearing bushes inside the bearing bush part 2 in the use process, for the pressure type detection part 8, the impact force suffered by the mushroom-shaped pressure lever 83 inside the pressure type detection part is larger than that suffered by the other three mushroom-shaped pressure levers 83, therefore, the time for the pressure of the corresponding pressure sensor 81 to disappear is longer than that of the other three mushroom-shaped pressure levers 83, and the frequency is high, so that a subsequent worker can judge the actual stress condition of the four bearing bushes inside the bearing bush part 2 and the centrifugal runout condition during the rotation transmission of the francis turbine transmission shaft in time;
when the bearing bush component 2 needs to be cooled, the external cooling device inputs cooling liquid into a cooling space formed by the composite cooling groove group 5, the upper sealing cover component 3, the lower sealing cover component 4, the cooling liquid inlet pipe 10 and the cooling liquid outlet pipe 11 through the cooling liquid inlet pipe 10, and the composite abdicating 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, herein, relational terms such as first and second, and the like may be 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. Also, 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 invention, the filling pattern is only used for distinguishing the layers and is not limited at all.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The utility model provides a francis turbine guide bearing structure, includes bearing body (1), its characterized in that: the bearing structure is characterized in that an upper sealing cover piece (3) and a lower sealing cover piece (4) are fixedly mounted at the top and the bottom of a bearing body (1) respectively, a bearing bush component (2) is sleeved on the inner side of the bearing bush component (1), a composite cooling tank set (5) is arranged on the inner side of the bearing bush component (2), a first abdicating hole (6) and a second abdicating hole (7) are respectively formed in the inner side of the bottom of the bearing bush component (2) and the inner side of the bottom of the bearing body (1), the first abdicating hole (6) is aligned with the second abdicating hole (7), and a pressure type detection component (8) is arranged between the first abdicating hole (6) and the second abdicating hole (7).
2. The francis turbine runner bearing structure according to claim 1, wherein: the bottom of the upper sealing cover piece (3) is fixed with the top of the bearing body (1) through screws, the top of the lower sealing cover piece (4) is fixed with the bottom of the bearing body (1) through screws, and the inner side of the top of the upper sealing cover piece (3) and the inner side of the bottom of the lower sealing cover piece (4) are fixedly sleeved with second sealing rings (12).
3. The francis turbine runner bearing structure according to claim 1, wherein: the inside of lower sealing cover piece (4) one side and the inboard of last sealing cover piece (3) one side are fixed respectively to be cup jointed coolant liquid exit tube (11) and coolant liquid and advance pipe (10), and all are provided with compound seal part (9) between the top of lower sealing cover piece (4) and the bottom of bearing body (1), between the bottom of last sealing cover piece (3) and the top of bearing body (1).
4. The francis turbine runner bearing structure according to claim 1, wherein: the two groups of compound sealing components (9) respectively comprise two first sealing rings (91) and two ring sleeve plates (92), and the surfaces of the two first sealing rings (91) are respectively fixedly connected with the bottom surface of the upper sealing cover component (3) and the top surface of the lower sealing cover component (4), and the first sealing rings (91) on the bottom surface of the upper sealing cover component (3) are installed, a compression spring (93) is fixedly connected between the surface of the upper sealing cover part (3) and the inner wall of the upper sealing cover part, and a first sealing ring (91) at the bottom surface of the lower sealing cover part (4) is installed in the same way, a compression spring (93) is also fixedly connected between the surface of the upper sealing cover part and the inner wall of the lower sealing cover part (4), the two ring sleeve plates (92) are respectively and fixedly sleeved on the inner side of the upper sealing cover part (3) and the inner side of the lower sealing cover part (4), the surface of the ring sleeve plate (92) is tightly attached to the surface of the first sealing ring (91).
5. The francis turbine runner bearing structure according to claim 1, wherein: the bearing bush component (2) is assembled by four equant bearing bushes, a composite connecting piece (13) is arranged between each of the four equant bearing bushes and the bearing body (1), a counter sink is clamped on the outer side of the composite connecting piece (13), the counter sink is arranged on the inner wall of the bearing body (1), the composite connecting piece (13) 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 inner side of the counter sink in threaded connection with the bearing bushes.
6. The francis turbine runner bearing structure according to claim 5, wherein: the composite cooling groove set (5) is formed in the inner walls of the four bearing bushes in the bearing bush component (2), 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) penetrates through the bearing bushes through a straight-flow groove, and the second cooling groove (52) is a trapezoidal groove formed in the inner wall of the middle portion of the bearing bushes.
7. The francis turbine runner bearing structure according to claim 1, wherein: pressure type detecting element (8) comprise pressure sensor (81), T type cavity sleeve pipe (82), mushroom depression bar (83) and rotation axis (84), and pressure sensor (81) and T type cavity sleeve pipe (82) all fix the inboard of cup jointing at second hole (7) of stepping down, the bottom activity of mushroom depression bar (83) cup joints the interior survey at T type cavity sleeve pipe (82), the top joint of mushroom depression bar (83) is in the inboard of first hole (6) of stepping down, the fixed surface at mushroom depression bar (83) middle part is connected with rotation axis (84), the inboard at T type cavity sleeve pipe (82) top of one end joint of rotation axis (84), the top of mushroom depression bar (83) is hemispherical, and the bottom of mushroom depression bar (83) is oval coniform.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210646103.XA CN115111267A (en) | 2022-06-08 | 2022-06-08 | Water guide bearing structure of mixed-flow water turbine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210646103.XA CN115111267A (en) | 2022-06-08 | 2022-06-08 | Water guide bearing structure of mixed-flow water turbine |
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| CN202210646103.XA Pending CN115111267A (en) | 2022-06-08 | 2022-06-08 | Water guide bearing structure of mixed-flow water turbine |
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| CN213392476U (en) * | 2020-11-04 | 2021-06-08 | 华北水利水电大学 | Hydroelectric set vibration throw protection device |
| 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 |
| CN215058926U (en) * | 2021-08-02 | 2021-12-07 | 湖州润博环保设备有限公司 | Steam turbine bearing bush |
| 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 |
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