A heat dissipation structure of a water turbine generator bearing bush
By designing pumping, filtering, and liquid discharge components in the bearing bush of the hydro-generator, and utilizing the rotation of the turbine shaft to drive pumping and filtering, water cooling without external power is achieved. This solves the problem of high bearing cooling costs in existing technologies, reduces operating costs, and ensures cooling performance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHUJI HONGQIANG BEARING BUSH CO LTD
- Filing Date
- 2026-04-09
- Publication Date
- 2026-05-29
AI Technical Summary
The existing cooling structure for the bearings of hydro-generators requires additional power, resulting in high operating costs and making it unsuitable for practical use.
A heat dissipation structure for the bearing of a hydro-generator was designed. Water cooling without external power is achieved through a pumping assembly, a filtration assembly, and a liquid outlet assembly. The rotation of the turbine shaft drives the pumping and filtration of water, which is then sprayed onto the bearing for heat dissipation.
It achieves effective water cooling of the bearing without external power, reduces operating costs, and minimizes the entry of mud and debris, ensuring cooling capacity and timely heat removal.
Smart Images
Figure CN224301250U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of hydroelectric generator technology, specifically to a heat dissipation structure for a hydroelectric generator bearing. Background Technology
[0002] The guide bearings in a hydro turbine generator set generate a lot of heat during operation, and heat dissipation is required to keep the bearings running.
[0003] For example, Chinese patent CN106763236A describes a hydro-generator, including a stator, rotor, main shaft, fixed outer cover, and oil-cooled bearings. The rotor is coaxially fixed to the outside of the main shaft, and the stator is coaxially fixed to the outer layer of the fixed outer cover. Oil-cooled bearings for supporting the two ends of the main shaft are respectively provided on both sides of the fixed outer cover. The oil-cooled bearing includes a bearing cooling structure, bearing housing, bearing cover, bearing bush, cooling oil groove, oil pump, cold oil inlet, and hot oil outlet. The bearing cover is located above the bearing housing, and the bearing bush is fixed to the bearing housing. A cooling oil groove along the axial direction is provided on the inner diameter side of the bearing bush. An oil inlet is provided in the middle of the cooling oil groove, and hot oil outlets are provided at both ends of the cooling oil groove. The bearing cooling structure includes a cooling cavity and a cooling body. The cooling body is located in the cooling cavity. The cooling cavity has a hot oil inlet and a cold oil outlet. The oil inlet is connected to the cold oil outlet through the oil pump, and the hot oil outlet is connected to the hot oil inlet. This invention has high heat exchange efficiency and can effectively avoid bearing burnout failure in the generator.
[0004] Although the above structure can achieve cooling, cooling via oil requires additional power, resulting in high operating costs and making it unsuitable for practical use.
[0005] Based on this, the present invention designs a heat dissipation structure for the bearing of a hydro-generator to solve the above problems. Utility Model Content
[0006] In view of the above-mentioned shortcomings of the existing technology, the present invention provides a heat dissipation structure for the bearing of a hydro-generator.
[0007] To achieve the above objectives, this utility model provides the following technical solution:
[0008] A heat dissipation structure for a turbine generator bearing, comprising a pumping assembly;
[0009] The pumping assembly is fixedly installed on the side wall of the base;
[0010] The pumping assembly includes a linkage assembly and a reciprocating pumping assembly. The linkage assembly is rotatably connected to the base, fixedly connected to the turbine shaft, and fixedly connected to the reciprocating pumping assembly. The water inlet of the reciprocating pumping assembly is located in the hydropower storage tank.
[0011] The outlet end of the reciprocating pumping component is connected to a drainage component for filtration, the outlet end of the filtration component is connected to a liquid outlet component for spraying, the liquid outlet end of the liquid outlet component is located on the bearing, and the liquid outlet end of the liquid outlet component is located at the top inside the base.
[0012] A drainage component for drainage is fixedly connected to the bottom of the base, and the drainage component is connected to the water outlet of the filter component.
[0013] Furthermore, the linkage assembly includes a first gear, a second gear, and a horizontal shaft. The first gear is fixedly installed on the outer wall of the water turbine shaft and is coaxial with the water turbine shaft. The first gear meshes with the second gear. The horizontal shaft is fixedly installed in the mounting hole of the second gear and is rotatably connected through a bearing. The second gear is fixedly connected to the reciprocating pumping assembly.
[0014] Furthermore, the reciprocating pump assembly includes a rolling bearing, a transverse groove, a T-shaped plate, a cylinder, a water inlet pipe, a first one-way valve, a support base, a first pipe, a second one-way valve, and a piston. The outer edge of the side wall of the second gear away from the base is fixedly connected to the inner ring of the rolling bearing. The support base is fixedly connected to the base, and the cylinder is fixedly connected to the support base. The outer wall of the piston is slidably connected to the inner wall of the cylinder. The top of the piston is fixedly connected to the bottom of the T-shaped plate. The transverse groove is opened at the upper end of the T-shaped plate, and the inner wall of the transverse groove is slidably connected to the outer ring of the rolling bearing. The water inlet pipe is fixedly installed at the bottom of the cylinder. The first one-way valve is fixedly installed on the water inlet pipe, and the water inlet end of the water inlet pipe is located in the hydroelectric power generation storage tank. The first pipe is fixedly installed at the lower end of the side wall of the cylinder. The second one-way valve is fixedly installed on the first pipe. When the second one-way valve is open, the first pipe is fixedly connected to the filter assembly.
[0015] Furthermore, when the piston moves upward, the inlet pipe opens and the second check valve closes; when the piston moves downward, the inlet pipe closes.
[0016] Furthermore, the filter assembly includes a one-inlet-two-outlet valve, a fifth pipe, a filter barrel, a sixth pipe, a bottom cover, a fixing ring, and a filter cartridge. The fifth pipe is fixedly installed on the side wall of the filter barrel, and the sixth pipe is fixedly installed on the top of the filter barrel. The first pipe is fixedly connected to the inlet end of the one-inlet-two-outlet valve, and the sixth and fifth pipes are fixedly connected to the outlet end of the one-inlet-two-outlet valve. The fixing ring is fixedly installed inside the filter barrel, and the top of the filter cartridge contacts the bottom of the fixing ring. The lower end of the filter barrel is threadedly connected to the bottom cover, and the inner wall of the bottom cover is in close contact with the bottom of the filter cartridge through a support block. The outlet assembly is fixedly installed on the side wall of the filter barrel, and the contact parts between the outlet assembly and the filter barrel, and the contact parts between the fifth pipe and the filter barrel, are located at the upper and lower ends of the fixing ring, respectively.
[0017] Furthermore, the liquid outlet assembly includes a seventh pipe and a nozzle. The seventh pipe is fixedly installed on the upper end of the filter barrel and is located above the fixing ring. The nozzle is fixedly connected to the seventh pipe and is located at the top of the base.
[0018] Furthermore, the drainage assembly includes a second pipe, two inlet and one outlet valves, a third pipe, a fourth pipe, and a liquid collection channel. The liquid collection channel is provided at the bottom of the base. The side wall of the base is fixedly connected to the second pipe, and the second pipe communicates with the liquid collection channel. The second and third pipes are fixedly connected to the inlet end of the two inlet and one outlet valves, and the fourth pipe is fixedly connected to the outlet end of the two inlet and one outlet valves.
[0019] Furthermore, the third pipe is fixedly connected to the bottom cover. Beneficial effects
[0020] In this utility model, the water turbine shaft rotates during hydroelectric power generation, driving the linkage component of the pumping assembly to rotate. The linkage component then drives the reciprocating pumping assembly to pump water, which is then filtered by the filtration assembly. The filtered water is sprayed onto the bearing bush inside the base through the liquid outlet assembly. The cooled water is discharged through the drainage assembly, achieving water cooling of the bearing bush without external power. This results in low operating costs and is practical for use. At the same time, it reduces the amount of mud and debris entering the base, ensuring cooling capacity and timely removal of heat from the bearing bush. Attached Figure Description
[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0022] Figure 1 This utility model provides a three-dimensional heat dissipation structure for a turbine generator bearing. Figure 1 ;
[0023] Figure 2 This is a front view of the main structure of a heat dissipation structure for a turbine generator bearing according to the present invention.
[0024] Figure 3 This utility model provides a three-dimensional heat dissipation structure for a turbine generator bearing. Figure 2 ;
[0025] Figure 4 This utility model provides a three-dimensional heat dissipation structure for a turbine generator bearing. Figure 3 ;
[0026] Figure 5 This is a cross-sectional view along direction AA in the figure;
[0027] Figure 6 This is a cross-sectional view along the direction of Figure BB.
[0028] The labels in the diagram represent:
[0029] 1. Base 2. Water turbine shaft 3. Pumping assembly 31. First gear 32. Rolling bearing 33. Horizontal groove 34. Second gear 35. T-shaped plate 36. Cylinder 37. Inlet pipe 38. First check valve 39. Support seat 310. First pipe 311. Second check valve 312. Piston 313. Horizontal shaft 4. Drainage assembly 41. Second pipe 42. Two inlet and one outlet valve 43. Third pipe 44. Fourth pipe 45. Liquid collection channel 5. Filter assembly 51. One inlet and two outlet valve 52. Fifth pipe 53. Filter barrel 54. Sixth pipe 55. Bottom cover 56. Fixing ring 57. Filter cylinder 6. Liquid outlet assembly 61. Seventh pipe 62. Spray pipe 7. Bearing bush. Detailed Implementation
[0030] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.
[0031] The present invention will be further described below with reference to the embodiments.
[0032] In some embodiments, please refer to Figure 1-6 A heat dissipation structure for a water turbine generator bearing, comprising a pumping assembly 3;
[0033] Pumping assembly 3 is fixedly installed on the side wall of base 1;
[0034] The pumping assembly 3 includes a linkage assembly and a reciprocating pumping assembly. The linkage assembly is rotatably connected to the base 1, the linkage assembly is fixedly connected to the water turbine shaft 2, and the linkage assembly is fixedly connected to the reciprocating pumping assembly. The water inlet of the reciprocating pumping assembly is located in the hydropower storage tank.
[0035] The outlet end of the reciprocating pumping component is connected to a drainage component 4 for filtration, the outlet end of the filter component 5 is connected to a liquid outlet component 6 for spraying, the spraying end of the liquid outlet component 6 is located on the bearing 7, and the liquid outlet end of the liquid outlet component 6 is located at the top inside the base 1.
[0036] A drainage component 4 for drainage is fixedly connected to the bottom of the base 1, and the drainage component 4 is connected to the water outlet end of the filter component 5.
[0037] When generating electricity using hydropower, the turbine shaft 2 rotates, which in turn drives the linkage component of the pumping assembly 3 to rotate. The linkage component then drives the reciprocating pumping assembly to pump water, which is then filtered through the filter assembly 5. The filtered water is sprayed onto the bearing 7 inside the base 1 through the liquid outlet assembly 6. The cooled water is discharged through the drainage assembly 4, achieving water cooling of the bearing 7 without external power. This results in low operating costs and is practical for use. At the same time, it reduces the amount of mud and debris entering the base 1, ensuring cooling capacity and timely removal of heat from the bearing 7.
[0038] The bearing 7 is fixedly installed inside the base 1;
[0039] The linkage assembly includes a first gear 31, a second gear 34, and a horizontal shaft 313. The first gear 31 is fixedly installed on the outer wall of the water turbine shaft 2 and is coaxial with the water turbine shaft 2. The first gear 31 and the second gear 34 are meshed and connected. The horizontal shaft 313 is fixedly installed in the mounting hole of the second gear 34 and is rotatably connected through a bearing. The second gear 34 is fixedly connected to the reciprocating pumping assembly.
[0040] The reciprocating pump assembly includes a rolling bearing 32, a transverse groove 33, a T-shaped plate 35, a cylinder 36, a water inlet pipe 37, a first one-way valve 38, a support base 39, a first pipe 310, a second one-way valve 311, and a piston 312. The second gear 34 is fixedly connected to the inner ring of the rolling bearing 32 at the outer edge of the side wall away from the base 1. The support base 39 is fixedly connected to the base 1. The cylinder 36 is fixedly connected to the support base 39. The outer wall of the piston 312 is slidably connected to the inner wall of the cylinder 36. The top of the piston 312 is fixedly connected to the bottom of the T-shaped plate 35. The transverse groove 33 is located at the upper end of the T-shaped plate 35. The inner wall of the groove 33 is slidably connected to the outer ring of the rolling bearing 32. The water inlet pipe 37 is fixedly installed at the bottom of the cylinder 36. The first one-way valve 38 is fixedly installed on the water inlet pipe 37, and the water inlet end of the water inlet pipe 37 is located in the hydropower storage tank. The first pipe 310 is fixedly installed at the lower end of the side wall of the cylinder 36. The second one-way valve 311 is fixedly installed on the first pipe 310. When the piston 312 moves upward, the water inlet pipe 37 is open and the second one-way valve 311 is closed. When the piston 312 moves downward, the water inlet pipe 37 is closed and the second one-way valve 311 is open. The first pipe 310 is fixedly connected to the filter assembly 5.
[0041] When the hydroelectric generator is in operation, the turbine shaft 2 rotates, which drives the first gear 31 of the linkage component of the pumping assembly 3 to rotate. The first gear 31 drives the second gear 34 to rotate along the horizontal axis 313. The second gear 34 drives the rolling bearing 32 of the reciprocating pumping assembly to rotate. The rolling bearing 32 drives the T-shaped plate 35 to move up and down reciprocally through the horizontal groove 33. The T-shaped plate 35 drives the piston 312 to move up and down reciprocally along the cylinder 36. When the piston 312 moves upward, the inlet pipe 37 opens and the second one-way valve 311 closes, allowing water to be pumped into the cylinder 36 through the inlet pipe 37. Then, when the piston 312 moves downward, the inlet pipe 37 closes and the second one-way valve 311 opens, allowing water from the cylinder 36 to enter the filter assembly 5 through the first pipe 310, thus achieving linkage-type pumping with no additional power required for pumping.
[0042] The filter assembly 5 includes a one-inlet-two-outlet valve 51, a fifth pipe 52, a filter barrel 53, a sixth pipe 54, a bottom cover 55, a fixing ring 56, and a filter cartridge 57. The fifth pipe 52 is fixedly installed on the side wall of the filter barrel 53, and the sixth pipe 54 is fixedly installed on the top of the filter barrel 53. The first pipe 310 is fixedly connected to the inlet end of the one-inlet-two-outlet valve 51, and the sixth pipe 54 and the fifth pipe 52 are fixedly connected to the outlet end of the one-inlet-two-outlet valve 51. The fixing ring 56 is fixedly installed inside the filter barrel 53. The top of the filter cartridge 57 contacts the bottom of the fixing ring 56. The lower end of the filter barrel 53 is threadedly connected to the bottom cover 55. The inner wall of the bottom cover 55 is in close contact with the bottom of the filter cartridge 57 through a support block. The liquid outlet assembly 6 is fixedly installed on the side wall of the filter barrel 53. The contact parts between the liquid outlet assembly 6 and the filter barrel 53, and the contact parts between the fifth pipe 52 and the filter barrel 53, are located at the upper and lower ends of the fixing ring 56, respectively.
[0043] During heat dissipation, the inlet-outlet valve 51 is connected to the fifth pipe 52. The water in the first pipe 310 enters the filter bucket 53 through the inlet-outlet valve 51 and the fifth pipe 52. It is then filtered through the filter cartridge 57. The filtered water enters the liquid outlet assembly 6. The filter cartridge 57 reduces the amount of mud and impurities entering the base 1, ensuring cooling capacity and timely removing heat from the bearing 7.
[0044] When the fixed ring 56 needs to be cleaned, the inlet-outlet valve 51 is connected to the sixth pipe 54. The water in the first pipe 310 enters the filter tank 53 through the inlet-outlet valve 51 and the sixth pipe 54. The water enters the fixed ring 56 and backwashes the fixed ring 56. After backwashing, the water is discharged from the drain assembly 4, thus cleaning the fixed ring 56 and facilitating its filtration.
[0045] The liquid outlet assembly 6 includes a seventh pipe 61 and a nozzle 62. The seventh pipe 61 is fixedly installed on the upper end of the filter barrel 53 and is located above the fixing ring 56. The nozzle 62 is fixedly connected to the seventh pipe 61 and is located at the top inside the base 1.
[0046] After the fixed ring 56 filters the water, the filtered water enters the nozzle 62 through the seventh pipe 61 and is sprayed onto the bearing 7. Under the external power, the bearing 7 dissipates heat, which is beneficial for practical use.
[0047] The drainage assembly 4 includes a second pipe 41, a two-inlet-one-outlet valve 42, a third pipe 43, a fourth pipe 44, and a liquid collection channel 45. The liquid collection channel 45 is provided at the bottom of the base 1. The side wall of the base 1 is fixedly connected to the second pipe 41, and the second pipe 41 communicates with the liquid collection channel 45. The second pipe 41 and the third pipe 43 are fixedly connected to the inlet end of the two-inlet-one-outlet valve 42, and the third pipe 43 is fixedly connected to the bottom cover 55. The fourth pipe 44 is fixedly connected to the output end of the two-inlet-one-outlet valve 42.
[0048] When the nozzle 62 sprays water, the two inlet and one outlet valve 42 of the drainage component 4 is connected to the second pipe 41. The water in the base 1 returns to the second pipe 41 through the liquid collection channel 45 and is then discharged from the fourth pipe 44, thus realizing the discharge of heat dissipation water.
[0049] When the fixed ring 56 is cleaned, the two inlet and one outlet valve 42 is connected to the third pipe 43, and the backwash water of the fixed ring 56 is discharged outward through the third pipe 43 and the fourth pipe 44, which is conducive to the discharge of impurities backwashed from the fixed ring 56.
[0050] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.
Claims
1. A heat dissipation structure for a turbine generator bearing, comprising a pumping assembly (3), characterized in that: The pumping assembly (3) is fixedly installed on the side wall of the base (1); The pumping assembly (3) includes a linkage assembly and a reciprocating pumping assembly. The linkage assembly is rotatably connected to the base (1), the linkage assembly is fixedly connected to the water turbine shaft (2), the linkage assembly is fixedly connected to the reciprocating pumping assembly, and the water inlet of the reciprocating pumping assembly is located in the hydropower storage tank. The outlet end of the reciprocating pumping assembly is connected to a drainage assembly (4) for filtration, the outlet end of the filter assembly (5) is connected to a liquid outlet assembly (6) for spraying, the spraying end of the liquid outlet assembly (6) is located on the bearing (7), and the liquid outlet end of the liquid outlet assembly (6) is located at the top inside the base (1). The bottom of the base (1) is connected to a drainage component (4) for drainage, and the drainage component (4) is connected to the outlet end of the filter component (5).
2. The heat dissipation structure for the turbine generator bearing according to claim 1, characterized in that, The linkage assembly includes a first gear (31), a second gear (34), and a horizontal shaft (313). The first gear (31) is fixedly installed on the outer wall of the water turbine shaft (2) and is coaxial with the water turbine shaft (2). The first gear (31) is meshed with the second gear (34). The horizontal shaft (313) is fixedly installed in the mounting hole of the second gear (34). The horizontal shaft (313) is rotatably connected through a bearing. The second gear (34) is fixedly connected to the reciprocating pumping assembly.
3. The heat dissipation structure for the turbine generator bearing according to claim 2, characterized in that, The reciprocating pump assembly includes a rolling bearing (32), a transverse groove (33), a T-shaped plate (35), a cylinder (36), a water inlet pipe (37), a first one-way valve (38), a support seat (39), a first pipe (310), a second one-way valve (311), and a piston (312). The outer edge of the side wall of the second gear (34) away from the base (1) is fixedly connected to the inner ring of the rolling bearing (32). The support seat (39) is fixedly connected to the base (1). The cylinder (36) is fixedly connected to the support seat (39). The outer wall of the piston (312) is in close sliding connection with the inner wall of the cylinder (36). The top of the piston (312) is in close contact with the T-shaped plate (35). 35) Bottom fixed connection, the horizontal groove (33) is opened on the upper end of the T-shaped plate (35), and the inner wall of the horizontal groove (33) is slidably connected to the outer ring of the rolling bearing (32). The water inlet pipe (37) is fixedly installed at the bottom of the cylinder (36). The first one-way valve (38) is fixedly installed on the water inlet pipe (37), and the water inlet end of the water inlet pipe (37) is located in the hydropower storage tank. The first pipe (310) is fixedly installed at the lower end of the side wall of the cylinder (36). The second one-way valve (311) is fixedly installed on the first pipe (310). When the second one-way valve (311) is opened, the first pipe (310) is fixedly connected to the filter assembly (5).
4. The heat dissipation structure for the turbine generator bearing according to claim 3, characterized in that, When the piston (312) moves upward, the inlet pipe (37) opens and the second check valve (311) closes; when the piston (312) moves downward, the inlet pipe (37) closes.
5. The heat dissipation structure for the bearing bush of a hydro-generator according to any one of claims 3-4, characterized in that, The filter assembly (5) includes a one-inlet-two-outlet valve (51), a fifth pipe (52), a filter barrel (53), a sixth pipe (54), a bottom cover (55), a fixing ring (56), and a filter cartridge (57). The fifth pipe (52) is fixedly installed on the side wall of the filter barrel (53), and the sixth pipe (54) is fixedly installed on the top of the filter barrel (53). The first pipe (310) is fixedly connected to the inlet end of the one-inlet-two-outlet valve (51), and the sixth pipe (54) and the fifth pipe (52) are connected to the outlet end of the one-inlet-two-outlet valve (51). The filter is fixedly connected, with the fixing ring (56) fixedly installed inside the filter barrel (53). The top of the filter barrel (57) contacts the bottom of the fixing ring (56). The lower end of the filter barrel (53) is threadedly connected to the bottom cover (55). The inner wall of the bottom cover (55) is in close contact with the bottom of the filter barrel (57) through the support block. The liquid outlet assembly (6) is fixedly installed on the side wall of the filter barrel (53). The contact parts between the liquid outlet assembly (6) and the filter barrel (53) and the fifth pipe (52) and the filter barrel (53) are located at the upper and lower ends of the fixing ring (56), respectively.
6. The heat dissipation structure for the turbine generator bearing according to claim 5, characterized in that, The liquid outlet assembly (6) includes a seventh pipe (61) and a nozzle (62). The seventh pipe (61) is fixedly installed on the upper end of the filter barrel (53) and is located above the fixing ring (56). The nozzle (62) is fixedly connected to the seventh pipe (61) and is located at the top inside the base (1).
7. The heat dissipation structure for the turbine generator bearing according to claim 6, characterized in that, The drainage assembly (4) includes a second pipe (41), a two-inlet-one-outlet valve (42), a third pipe (43), a fourth pipe (44), and a liquid collection channel (45). The liquid collection channel (45) is provided at the bottom of the base (1). The side wall of the base (1) is fixedly connected to the second pipe (41), and the second pipe (41) is connected to the liquid collection channel (45). The second pipe (41) and the third pipe (43) are fixedly connected to the inlet end of the two-inlet-one-outlet valve (42), and the fourth pipe (44) is fixedly connected to the outlet end of the two-inlet-one-outlet valve (42).
8. The heat dissipation structure for the turbine generator bearing according to claim 7, characterized in that, The third pipe (43) is connected to the bottom cover (55) in a fixed manner.