CN112797303A

CN112797303A - Power station generator oil groove anomaly detection device

Info

Publication number: CN112797303A
Application number: CN202110098700.9A
Authority: CN
Inventors: 王奔; 刘双喜; 彭湘溪; 李政军; 彭黎明
Original assignee: Hunan Water Conservancy Investment Local Power Co Ltd
Current assignee: Hunan Xiangshui Group Co.,Ltd.
Priority date: 2021-01-25
Filing date: 2021-01-25
Publication date: 2021-05-14
Anticipated expiration: 2041-01-25
Also published as: CN112797303B

Abstract

The utility model relates to a hydropower station generator oil groove abnormity detection device, which comprises a collecting box arranged on a bearing seat, wherein an upper oil tank is arranged on the bearing seat, the upper end of the outer wall of the upper oil tank is communicated with an oil overflow pipe, the other end of the oil overflow pipe is communicated with the upper end of the collecting box, a lower oil tank is fixedly connected below the bearing seat on a main shaft, the lower end of the outer wall of the lower oil tank is communicated with a gear pump, the input end of the gear pump is coaxially and fixedly connected with a rotating rod, the rotating rod is arranged along the vertical direction, a gear is sleeved on the rotating rod in a sliding manner, a gear ring is sleeved on the main shaft and fixedly connected on the bearing seat, the gear slides to be meshed with the gear ring, a driving component for driving the sliding and positioning of the gear, and discharging the liquid in the lower oil tank and the upper oil tank so as to facilitate the reuse of the guide bearing.

Description

Power station generator oil groove anomaly detection device

Technical Field

The application relates to the field of hydraulic turbine guide bearing, especially, relate to a power station generator oil groove anomaly detection device.

Background

At present, a hydraulic turbine is mainly adopted in a generator of a hydropower station, the hydraulic turbine is generally provided with a main shaft and a guide bearing, the guide bearing is used for bearing radial mechanical unbalanced force and electromagnetic unbalanced force generated when the main shaft of the hydraulic turbine generator rotates, and restricts the radial displacement of the main shaft to prevent the main shaft from swinging, lubricating oil is frequently required to be filled in the guide bearing, on one hand, the friction force between the main shaft and the guide bearing is reduced, on the other hand, a cooler is arranged in the guide bearing, and the guide bearing is cooled through oil-water heat exchange.

In the related art, as the Chinese patent with the publication number of CN201461210U, an oil-lubricated water turbine guide bearing with radial vertical shaft parabolic tiles is disclosed, which is characterized in that: the hydraulic turbine top cover is provided with a bearing seat, a bearing body is fixed on the bearing seat and combined by a four-segment arc body, a main shaft bearing bush is embedded on the inner side of the bearing body, the bearing bush is in a paraboloid shape, a rotating oil basin positioned at the lower end of the bearing body is installed on a main shaft, an upper oil tank is welded on the upper end of the bearing seat, an oil tank cover is sealed on the upper oil tank, a pitot tube is installed in the side wall of the bearing body, the lower end of the pitot tube is communicated with the rotating oil basin, the upper end of the pitot tube is connected with a cooler arranged on the outer side of the.

However, when the cooler pipeline is damaged and leaks water, the water leakage condition of the guide bearing needs to be detected in time, in the related technology, as the Chinese patent with the publication number of CN203100816U, an oil level switch and an oil level gauge are arranged on the oil collection barrel, the oil collection barrel comprises the oil collection barrel and an oil overflow detection branch pipe, the oil inlet pipe of the oil collection barrel is communicated with the oil overflow detection branch pipe, the oil overflow of the oil collection barrel can be accurately and timely found through the design, and the accident enlargement is avoided.

In view of the above-mentioned related technologies, the inventor believes that, due to the damage of the pipeline of the water cooler, cold water enters the oil tank, and cooling water enters the oil tank and then is mixed with lubricating oil, so that the cooling water is difficult to perform a circulating cooling function again, the liquid in the oil tank needs to be completely emptied, after the maintenance is completed, the cooling water and the lubricating oil are injected again, in the related technologies, the oil overflow pipe of the oil tank can only discharge part of the liquid in the oil tank, when the liquid in the oil tank is completely emptied, the guide bearing needs to be disassembled, then the guide bearing is cleaned, the guide bearing is reinstalled, and the lubricating oil is injected again, which is very troublesome.

Disclosure of Invention

In order to facilitate the liquid in the evacuation oil groove, the application provides a power station generator oil groove anomaly detection device.

The application provides a pair of power station generator oil groove anomaly detection device adopts following technical scheme:

the utility model provides a power station generator oil groove anomaly detection device, is including setting up the collecting box on the bearing frame, be equipped with the oil tank on the bearing frame, it has oil spilling pipe to go up oil tank outer wall upper end intercommunication, the oil spilling pipe other end intercommunication the collecting box upper end, on the main shaft in oil tank under the bearing frame below fixedly connected with, oil tank outer wall lower extreme intercommunication has the gear pump down, the coaxial fixedly connected with dwang of gear pump input, the dwang sets up along vertical direction, the slip cover is equipped with the gear on the dwang, the cover is equipped with the ring gear on the main shaft, ring gear fixed connection be in on the bearing frame, the gear slide with the ring gear meshing is connected, be equipped with on the bearing frame and be used.

Through adopting above-mentioned technical scheme, when needing the interior liquid of discharge guide bearing, slide through drive assembly drive gear, connect until gear and ring gear meshing, then rotate the main shaft, the oil tank rotates under the drive, thereby it rotates to drive the gear pump, and gear and ring gear meshing are connected, then the gear pump rotates and drives the gear rotation, thereby drive gear pump work, the liquid discharge in the oil tank will be gone down in the gear pump work, and the oil tank passes through the clearance intercommunication between axle bush and the main shaft with last oil tank down, thereby can be with the liquid evacuation in the bearing frame through gear pump work, so that guide bearing's used repeatedly.

Optionally, there is a holding ring along vertical direction sliding connection on the bearing frame, the gear rotates and connects on the holding ring, drive assembly includes motor and lead screw, the lead screw rotates with the drive the vertical removal of holding ring, the motor is used for driving the lead screw rotates.

Through adopting above-mentioned technical scheme, when drive gear vertical removal, open the motor, drive the lead screw and rotate to drive the vertical removal of holding ring, the vertical removal of holding ring drives the vertical removal of gear, and the lead screw has certain limit function among this drive assembly, can restrict the gear in a certain position to a certain extent.

Optionally, fixedly connected with cover is located on the bearing frame middle box on the oil tank down, the gear pump is located in the middle box, middle box lower extreme intercommunication and fixedly connected with oil extraction pipe, the oil extraction pipe other end intercommunication the collecting box.

Through adopting above-mentioned technical scheme, gear pump during operation can arrange the liquid in the guide bearing to the middle box in, then can arrange to collect in the collection box through the oil drain pipe.

Optionally, a water permeable membrane is fixedly connected in the collecting box and located below the oil discharge pipe.

Through adopting above-mentioned technical scheme, can separate lubricating oil and water in the collection case.

Optionally, a treatment box is fixedly connected to the bearing block, a heater is arranged in the treatment box, the treatment box is communicated with a communicating pipe, the other end of the communicating pipe is communicated with the collecting box, the communicating pipe is located on the upper side of the permeable membrane, the communicating pipe is obliquely arranged, one end, close to the treatment box, of the communicating pipe is lower than the other end of the communicating pipe, the lower end of the treatment box is communicated with an oil suction pipe, the other end of the oil suction pipe is communicated with an intermediate box, a first valve and a second valve are arranged on the oil discharge pipe and the oil suction pipe respectively, a third valve is arranged on the communicating pipe, the upper end of the treatment box is communicated with an air pipe, the other end of the air pipe is communicated with.

Through adopting above-mentioned technical scheme, after the oil-water separation in the collection box, open valve three, liquid in the collection box flows to the treatment box in, then through the liquid heating of heater to the treatment box, the water evaporation in the lubricating oil, flow to the collection box in through the trachea, after the processing finishes, close valve three and close valve four, open valve two, and through drive assembly drive gear vertical movement with be connected with the ring gear meshing, then the reversal main shaft, thereby drive gear revolve, and then drive gear pump work, absorb the lubricating oil in the treatment box to middle box, and absorb to the oil tank down through the honeycomb duct, thereby be convenient for the used repeatedly of lubricating oil.

Optionally, a condenser is arranged on the air pipe.

By adopting the technical scheme, the gas evaporated from the treatment box is conveniently condensed into liquid.

Optionally, a liquid collecting groove is formed in the inner bottom surface of the middle box in a surrounding mode, and the two flow guide pipes are located in the liquid collecting groove.

By adopting the technical scheme, the liquid conveniently and intensively enters the liquid collecting tank so as to be discharged and absorbed by the flow guide pipe.

Optionally, the lower end of the collecting box is communicated with a drain pipe.

Through adopting above-mentioned technical scheme, conveniently handle the water that separates in the collection box.

In summary, the present application includes at least one of the following beneficial technical effects:

1. when liquid in the guide bearing needs to be discharged, the gear slides through the driving assembly until the gear is meshed with the gear ring, then the main shaft is rotated to drive the lower oil tank to rotate, so that the gear pump is driven to rotate, the gear is meshed with the gear ring, the gear pump rotates to drive the gear to rotate, so that the gear pump is driven to work, the liquid in the lower oil tank is discharged by the gear pump, the lower oil tank and the upper oil tank are communicated through a gap between the bearing bush and the main shaft, so that the liquid in the bearing seat can be emptied through the gear pump, and the guide bearing can be reused;

2. this application can be with lubricating oil and water separation in the collecting box through the membrane of permeating water in the collecting box, then through handling case heat treatment, removes the trace water in the lubricating oil, and the lubricating oil absorption in the rethread gear pump reversal will handling the case is to the oil tank down to reach reuse's purpose.

Drawings

Fig. 1 is a schematic cross-sectional view of an oil groove abnormality detection device for a hydroelectric power station generator according to an embodiment of the present disclosure, applied to a guide bearing;

FIG. 2 is a schematic view of the overall structure of FIG. 1;

fig. 3 is a schematic view of the overall structure of the hydroelectric power station generator oil groove abnormality detection device applied to the guide bearing in the embodiment of fig. 1 (wherein the slope of the treatment tank is shown).

Description of reference numerals: 1. a bearing seat; 2. a main shaft; 3. an upper oil tank; 4. a lower oil tank; 5. bearing bushes; 6. a collection box; 7. an oil spill pipe; 8. a middle box; 9. a liquid collecting tank; 10. a gear pump; 11. a flow guide pipe I; 12. a second flow guide pipe; 13. rotating the rod; 14. a sleeve; 15. a rib; 16. a card slot; 17. a gear; 18. a ring gear; 19. a guide wheel; 20. a positioning ring; 21. positioning a groove; 22. a guide bar; 23. a motor; 24. a screw rod; 25. an oil discharge pipe; 26. a water permeable membrane; 27. a first valve; 28. a treatment tank; 29. a heater; 30. a communicating pipe; 31. a third valve; 32. an air tube; 33. a fourth valve; 34. a condenser; 35. an oil suction pipe; 36. a second valve; 37. a drain pipe; 38. a fifth valve; 39. a connecting rod.

Detailed Description

The present application is described in further detail below with reference to figures 1-3.

Referring to fig. 1, the cover is equipped with bearing frame 1 on hydraulic turbine main shaft 2, bearing frame 1 fixed connection is on hydraulic turbine top cap (not shown in the figure), the last oil tank 3 on main shaft 2 is located to fixedly connected with cover on bearing frame 1, bearing frame 1 is connected with lower oil tank 4 in the rotation of last oil tank 3 below, lower oil tank 4 cover is established and fixed connection is on main shaft 2, fixedly connected with axle bush 5 on the inner wall that is close to main shaft 2 on the bearing frame 1, be equipped with the clearance between axle bush 5 and the main shaft 2, when main shaft 2 rotates, lubricating oil in the lower oil tank 4 enters into in the oil tank 3 through the clearance of axle bush 5 and main.

The embodiment of the application discloses power station generator oil groove anomaly detection device. Referring to fig. 1 and 2, the device comprises a collecting box 6, a connecting rod 39 is fixedly connected to a bearing seat 1, the other end of the connecting rod 39 is fixedly connected to the collecting box 6, the collecting box 6 is located below a lower oil tank 4, the upper end of the outer wall of an upper oil tank 3 is communicated with an oil overflow pipe 7, and the other end of the oil overflow pipe 7 is communicated with the upper end of the collecting box 6.

The middle box 8 of oil tank 4 is located down to fixedly connected with cover on the bearing frame 1, and middle box 8 is the vacuum setting, and the bottom edge ring is equipped with collecting tank 9 in the middle box 8, through screw fixedly connected with gear pump 10 on the 4 outer walls of lower oil tank, and the two logical mouths of a river of gear pump 10 communicate respectively and fixedly connected with honeycomb duct 11 and honeycomb duct two 12, and honeycomb duct 11 communicates in oil tank 4 down, and the one end that gear pump 10 was kept away from to honeycomb duct two 12 extends to in the collecting tank 9.

Fixedly connected with ring gear 18 in middle box 8, the coaxial fixedly connected with dwang 13 of gear pump 10 input, dwang 13 sets up along vertical direction, the sliding sleeve is equipped with sleeve 14 on dwang 13, along vertical direction fixedly connected with bead 15 on dwang 13, offer the draw-in groove 16 that is used for supplying bead 15 card to go into on the sleeve 14 inner wall, the coaxial fixedly connected with gear 17 in sleeve 14 upper end, sleeve 14 lower extreme fixedly connected with leading wheel 19, bottom surface has holding ring 20 along vertical direction sliding connection in middle box 8, holding ring 20 is coaxial with ring gear 18, set up the constant head tank 21 that supplies the leading wheel 19 card to go into along its circumference on the 20 outer wall of holding ring, be equipped with the drive assembly who is used for driving 20 vertical movements of holding ring and location on the

middle box

8, 20 vertical movements of holding ring gear are in order to drive 17.

Bottom surface fixedly connected with is the guide bar 22 of vertical setting in middle box 8, and the guide bar 22 is vertical wears out holding ring 20, and drive assembly includes motor 23 and lead screw 24, and lead screw 24 rotates to be connected on middle box 8, and lead screw 24 axis of rotation and length direction all set up along vertical direction, and holding ring 20 threaded connection are worn out to lead screw 24, and motor 23 passes through screw fixed connection in the outer bottom surface of middle box 8, the coaxial fixed connection lead screw 24 lower extreme of motor 23 output shaft.

Referring to fig. 1 and 3, the outer wall of the middle box 8 is communicated with the lower end of the liquid collecting tank 9 and is fixedly connected with an oil discharging pipe 25, the other end of the oil discharging pipe 25 is communicated with the collecting tank 6, the water permeable membrane 26 is fixedly connected with the inside of the collecting tank 6, the oil discharging pipe 25 is close to the water permeable membrane 26 and is positioned above the water permeable membrane 26, and a valve 27 is arranged on the oil discharging pipe 25.

Fixedly connected with processing box 28 is gone up to collecting box 6, through screw fixedly connected with heater 29 in the processing box 28, and heater 29 can be heated by electricity, intercommunication and fixedly connected with communicating pipe 30 on the collecting box 6, and communicating pipe 30 other end intercommunication processing box 28, communicating pipe 30 are close to the permeable membrane 26 and are located the permeable membrane 26 top, install valve three 31 on the communicating pipe 30, and communicating pipe 30 is the slope setting, and the one end that communicating pipe 30 is close to processing box 28 is less than the communicating pipe 30 other end.

The upper end of the treatment box 28 is communicated and fixedly connected with an air pipe 32, the other end of the air pipe 32 is communicated with the lower end of the collection box 6, a valve four 33 is installed on the air pipe 32, and a condenser 34 is installed on the air pipe 32.

The lower end of the treatment box 28 is communicated and fixedly connected with an oil suction pipe 35, the other end of the oil suction pipe 35 is communicated with the liquid collecting tank 9, and a second valve 36 is arranged on the oil suction pipe 35.

The lower end of the collecting box 6 is communicated and fixedly connected with a drain pipe 37, and a valve five 38 is arranged on the drain pipe 37.

The implementation principle of the hydropower station generator oil groove abnormity detection device in the embodiment of the application is as follows: when the liquid in the lower oil tank 4 and the upper oil tank 3 needs to be emptied, the motor 23 is started to drive the screw rod 24 to rotate, thereby driving the positioning ring 20 to vertically move, the positioning ring 20 vertically moves to drive the gear 17 to vertically move, the control gear 17 is meshed with the gear ring 18 to be connected, then the main shaft 2 rotates to drive the gear 17 to rotate, under the action of the gear ring 18, the gear pump 10 is driven to work by driving the gear 17 to rotate, at the moment, the first valve 27 is started, the liquid in the lower oil tank 4 and the upper oil tank 3 is pumped into the middle box 8 and is discharged into the collection box 6 through the oil discharge pipe 25, the water and the oil are primarily separated through the water permeable membrane 26, after the oil and the water are primarily separated, the third valve 31 is started, the lubricating oil on the water permeable membrane 26 is discharged into the treatment box 28 through the communicating pipe 30, at the lubricating oil is heated through the heater, the vapor is condensed into liquid under the action of the condenser 34 and enters a water layer in the treatment box 28, after the lubricating oil is treated, the valve III 31 and the valve IV 33 are closed, the valve II 36 is opened, the main shaft 2 is controlled to rotate reversely, the gear pump 10 is driven to work, so that the lubricating oil in the treatment box 28 can be absorbed into the liquid collecting tank 9, and the lubricating oil is absorbed into the lower oil tank 4 through the guide pipe II 12, and the recycling is realized.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a power station generator oil groove anomaly detection device, is including setting up collecting box (6) on bearing frame (1), be equipped with on bearing frame (1) oil tank (3), it has oil spilling pipe (7) to go up oil tank (3) outer wall upper end intercommunication, oil spilling pipe (7) other end intercommunication collecting box (6) upper end, main shaft (2) go up in oil tank (4) under bearing frame (1) below fixedly connected with, its characterized in that: lower oil tank (4) outer wall lower extreme intercommunication has gear pump (10), the coaxial fixedly connected with dwang (13) of gear pump (10) input, dwang (13) set up along vertical direction, the cover is equipped with gear (17) on dwang (13), the cover is equipped with ring gear (18) on main shaft (2), ring gear (18) fixed connection be in on bearing frame (1), gear (17) slide with ring gear (18) meshing is connected, be equipped with on bearing frame (1) and be used for the drive assembly of gear (17) slip and location.

2. The apparatus for detecting an abnormality in an oil sump of a generator of a hydroelectric power station according to claim 1, wherein: bearing frame (1) is gone up along vertical direction sliding connection has holding ring (20), gear (17) rotate to be connected on holding ring (20), drive assembly includes motor (23) and lead screw (24), lead screw (24) rotate with the drive the vertical removal of holding ring (20), motor (23) are used for driving lead screw (24) rotate.

3. The apparatus for detecting an abnormality in an oil sump of a generator of a hydroelectric power station according to claim 1, wherein: the oil-gas separator is characterized in that a middle box (8) is fixedly connected to the bearing seat (1) in a sleeved mode and arranged on the lower oil tank (4), the gear (17) and the pump (10) are located in the middle box (8), the lower end of the middle box (8) is communicated with an oil discharge pipe (25) in a fixedly connected mode, and the other end of the oil discharge pipe (25) is communicated with the collecting box (6).

4. The apparatus for detecting an abnormality in an oil sump of a generator of a hydroelectric power station according to claim 3, wherein: a water permeable membrane (26) is fixedly connected in the collecting box (6), and the water permeable membrane (26) is positioned below the oil discharge pipe (25).

5. The apparatus for detecting an abnormality in an oil sump of a generator of a hydroelectric power station according to claim 4, wherein: a processing box (28) is fixedly connected to the bearing seat (1), a heater (29) is arranged in the processing box (28), a communicating pipe (30) is communicated with the processing box (28), the other end of the communicating pipe (30) is communicated with the collecting box (6), the communicating pipe (30) is positioned on the upper side of the permeable membrane (26), the communicating pipe (30) is obliquely arranged, one end, close to the processing box (28), of the communicating pipe (30) is lower than the other end of the communicating pipe, the lower end of the processing box (28) is communicated with an oil suction pipe (35), the other end of the oil suction pipe (35) is communicated with the middle box (8), a valve I (27) and a valve II (36) are respectively arranged on the oil discharge pipe (25) and the oil suction pipe (35), a valve III (31) is arranged on the communicating pipe (30), an air pipe (32) is communicated with the upper end of the processing box (28), and the other end of, and a fourth valve (33) is arranged on the air pipe (32), and a second guide pipe (12) is communicated with the gear (17) and the pump (10).

6. The apparatus for detecting an abnormality in an oil sump of a generator of a hydroelectric power station according to claim 5, wherein: and a condenser (34) is arranged on the air pipe (32).

7. The apparatus for detecting an abnormality in an oil sump of a generator of a hydroelectric power station according to claim 5, wherein: a liquid collecting groove (9) is formed in the bottom surface of the middle box (8) in a surrounding mode, and the second flow guide pipe (12) is located in the liquid collecting groove (9).

8. The apparatus for detecting an abnormality in an oil sump of a generator of a hydroelectric power station according to claim 1, wherein: the lower end of the collecting box (6) is communicated with a drain pipe (37).