CN110985867A - Self-lubricating system for dam hydroelectric power generation - Google Patents
Self-lubricating system for dam hydroelectric power generation Download PDFInfo
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- CN110985867A CN110985867A CN201911344562.7A CN201911344562A CN110985867A CN 110985867 A CN110985867 A CN 110985867A CN 201911344562 A CN201911344562 A CN 201911344562A CN 110985867 A CN110985867 A CN 110985867A
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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
- F16N—LUBRICATING
- F16N7/00—Arrangements for supplying oil or unspecified lubricant from a stationary reservoir or the equivalent in or on the machine or member to be lubricated
- F16N7/38—Arrangements for supplying oil or unspecified lubricant from a stationary reservoir or the equivalent in or on the machine or member to be lubricated with a separate pump; Central lubrication systems
- F16N7/40—Arrangements for supplying oil or unspecified lubricant from a stationary reservoir or the equivalent in or on the machine or member to be lubricated with a separate pump; Central lubrication systems in a closed circulation system
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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
- F16N—LUBRICATING
- F16N29/00—Special means in lubricating arrangements or systems providing for the indication or detection of undesired conditions; Use of devices responsive to conditions in lubricating arrangements or systems
- F16N29/04—Special means in lubricating arrangements or systems providing for the indication or detection of undesired conditions; Use of devices responsive to conditions in lubricating arrangements or systems enabling a warning to be given; enabling moving parts to be stopped
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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
- F16N—LUBRICATING
- F16N39/00—Arrangements for conditioning of lubricants in the lubricating system
- F16N39/02—Arrangements for conditioning of lubricants in the lubricating system by cooling
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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
- F16N—LUBRICATING
- F16N39/00—Arrangements for conditioning of lubricants in the lubricating system
- F16N39/06—Arrangements for conditioning of lubricants in the lubricating system by filtration
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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
- F16N—LUBRICATING
- F16N2210/00—Applications
- F16N2210/14—Bearings
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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
- F16N—LUBRICATING
- F16N2260/00—Fail safe
- F16N2260/02—Indicating
- F16N2260/06—Temperature
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- 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
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Hydraulic Turbines (AREA)
Abstract
The invention relates to a self-lubricating system for dam hydroelectric power generation, which comprises a water guide bearing mechanism and a self-lubricating mechanism, wherein the water guide bearing mechanism comprises a bearing body, an upper oil tank, an oil collecting tank and a main shaft, and the self-lubricating mechanism comprises an oil collecting tank and a cooler; the self-lubricating system provided by the invention is convenient for overhauling and maintaining the cooler, is beneficial to reducing the volume of the bearing oil tank and the mounting height of the bearing, can save the oil pump and auxiliary equipment, can establish oil circulation when a unit is started, and well avoids oil cut-off accidents caused by the problem of an external oil pump control system.
Description
Technical Field
The invention belongs to the technical field of hydroelectric power generation, and particularly relates to a self-lubricating system for dam hydroelectric power generation.
Background
The external oil circulation cooling device is an auxiliary device which is matched with a large-capacity high-rotating-speed horizontal hydroelectric generating set and used for forcedly cooling and lubricating a bearing, and consists of an oil return box, an oil pump, an oil cooler, a high-level oil tank and an automatic element, wherein lubricating oil forms circulation flow among the oil return box, the oil pump, the oil cooler, the high-level oil tank, a unit bearing and the oil return box, so that heat generated during the operation of the bearing is taken away, and the effect of cooling and lubricating the bearing is achieved.
In order to improve the operation reliability of the water guide bearing and facilitate maintenance and repair, the external circulation external cooler type water guide bearing is adopted at present, but the defects are that the external circulation external cooler type water guide bearing needs a larger arrangement space, the external cooling mode is adopted to be more complex to implement, and particularly the forced external pump type water guide bearing usually needs an integrated oil station, so the arrangement space is larger, the operation is complex and the manufacturing cost is higher; the cooler in the internal circulation mode is placed in a bearing oil tank, bearing lubricating oil is easy to contain water due to water leakage of the cooler, so that the oil film supporting capacity is insufficient, the water guide bearing is in an accident, and the guide bearing body needs to be disassembled when the cooler is replaced, so that inconvenience is brought to overhaul and maintenance; the external oil pump of external circulation has the cost higher, need arrange the not enough of dedicated integrated oil station space.
Disclosure of Invention
The invention aims to solve the problems in the background art, and provides a self-lubricating system for dam hydroelectric power generation, which is convenient for overhauling and maintaining a cooler, is beneficial to reducing the volume of a bearing oil tank and the installation height of a bearing, can save an oil pump and auxiliary equipment, can establish oil circulation when a unit is started, and well avoids oil cut-off accidents caused by the problem of an external oil pump control system.
The purpose of the invention is realized as follows:
the utility model provides a self-lubricating system for dam hydroelectric power generation, leads bearing mechanism and self-lubricating mechanism including water, water leads bearing mechanism and includes the bearing body, goes up oil tank, sump oil tank and main shaft, establish axle collar, pump hole and oil hole on the main shaft, the pump hole is located on the axle collar, first pipeline is established to the output of sump oil tank, the pore pair main shaft that oils is passed through to one side of first pipeline, the bearing body is connected to the axle collar of main shaft, the output of bearing body passes through the input of second pipe connection sump oil tank.
The self-lubricating mechanism comprises an oil collecting tank and a cooler, the output end of the pump hole in the shaft collar is connected to the oil collecting tank, and the output end of the oil collecting tank is connected to the cooler through a third pipeline.
Further, the shaft collar of the main shaft is connected with the bearing body through a water guide shoe, and the water guide shoe is connected to the oil collecting tank through a shoe seat.
Further, the output end of the shaft collar and the lower end of the water guide bush are provided with a lower oil tank, the output end of the lower oil tank is connected with the side wall of the first pipeline, and the output end of the first pipeline is connected with the bearing body.
Furthermore, an inlet and an outlet are arranged at the upper end of the cooler.
Furthermore, a flow relay, a stop valve, an oil filter and a thermometer are sequentially arranged on the second pipeline.
Further, the filtering element of the oil filter is a filtering sheet made of metal mesh, and the filtering precision Z1 of the filtering sheet is 3-40 microns.
Furthermore, a pressure gauge, an electromagnetic flowmeter, a thermometer and a stop valve are sequentially arranged on the third pipeline.
Further, go up the upper end of oil tank and establish the oil tank cap, bearing body one side is connected to the one end of oil tank cap through last oil tank, the main shaft is connected to the other end of oil tank cap.
Furthermore, a smell signal device and an oil level switch are arranged in the upper oil tank, and an oil mixed water alarm is arranged in the lower oil tank.
Furthermore, a tile temperature annunciator is arranged in the water guide tile, and an oil temperature annunciator is arranged in the oil collecting tank. The tile temperature annunciator is a first temperature sensor, and the oil temperature annunciator is a second temperature sensor; the first temperature sensor and the second temperature sensor are both connected with a controller through a wireless transmission module, and the controller is connected with an audible and visual alarm; when the temperature detected by the first temperature sensor or the second temperature sensor exceeds a preset threshold value, the controller controls the audible and visual alarm to give an alarm. Different sounds and different light are arranged on the audible and visual alarm to distinguish which of the first temperature sensor and the second temperature sensor exceeds a preset threshold value.
Furthermore, the threshold corresponding to the first temperature sensor is T1, the threshold corresponding to the second temperature sensor is T2, and T1 is not less than T2, and the units are all in Celsius degrees.
Further, in order to better realize filtering and improve lubricating capacity, the filtering precision Z1 of the oil filter, the threshold T1 corresponding to the first temperature sensor and the threshold T2 corresponding to the second temperature sensor meet the following conditions:
Z1＝α·(T2/T1)+Z0；
wherein Z0 is the adjusting precision and the value range is 2-15 microns, and α is the adjusting coefficient and the value range is 0.35-12.4.
Further, the radial load FT of the bearing body satisfies:
FT＝f1·H·[(L1+L2)/L2]2，
wherein f is1The radial force coefficient of the water guide shoe is shown, H represents the maximum water head (m) when the impeller of the water turbine runs, and L1Indicating the length (m), L of the lower guide bearing of the generator from the bearing body2The length (m) of the bearing body from the turbine runner is indicated.
Furthermore, the wattage Z of the water guide tile is 6-30, the water guide tile adopts a fan-shaped tile, and the ratio of the length L to the width B of the water guide tile is 0.5-1.
Further, Fp/(B.L). ltoreq.3 MPa, wherein B represents the width (m) of the water guide shoe, L represents the length (m) of the water guide shoe, Z represents the wattage of the water guide shoe, Fp represents the load of the water guide shoe, and Fp＝0.5FT/Z。
Compared with the prior art, the invention has the beneficial effects that:
1. the invention provides a self-lubricating system for dam hydroelectric power generation, wherein a water guide bearing comprises a bearing body, a water guide bush, an upper oil tank, an oil collecting tank, an oil tank cover and accessories, a main shaft of a water turbine is a rotating part, a pump hole is arranged on a shaft collar of the main shaft and rotates along with the main shaft, the rest parts are static parts, the bearing body on a top cover is fixed on the top cover by a pin after being centered on a construction site, the bearing body bears radial force transmitted by the water guide bush through a pressure-resistant block and is transmitted to the top cover, an oil lubricating system independent of the system is arranged inside the bearing, lubricating oil can circulate through the shaft collar and the water guide bush under the driving of centrifugal force generated by the rotation of the main shaft, and a cooler is cooled by cooling water provided by a power station and has enough cooling capacity.
2. The invention provides a self-lubricating system for dam hydroelectric power generation, the oil flow circulating power of the whole pipeline system of the external circulating structure of a guide bearing shaft collar pump of a water turbine is generated by the shaft collar pump, a plurality of radial or inclined pump holes related to the rotating direction of a main shaft are processed on the shaft collar to form the shaft collar pump, an oil collecting tank is arranged at the outer edge of each pump hole for collecting hot oil pumped out by the shaft collar and sending the hot oil into the pipeline system, a pressure display controller and an electromagnetic flowmeter are arranged in the pipeline system for monitoring the operating state of the pipeline system, a bearing cooler is arranged outside an oil tank and is connected with the oil tank into a loop by oil pipes, valves and other devices, the cooler is arranged outside the oil tank even for the overhaul and maintenance of the cooler, the volume of the bearing oil tank is reduced, the mounting height of the bearing is reduced, meanwhile, the oil pump and auxiliary devices can be saved, and oil circulation can be established when a unit is, the oil-break accident that outer oil pump control system problem leads to is fine avoided.
3. The invention provides a self-lubricating system for dam hydroelectric power generation, wherein an oil level annunciator and an oil level switch are positioned in an upper oil tank of a bearing, an oil-water mixing alarm device is positioned in a lower oil tank, and an alarm signal is sent out when the oil level is too high or too low and the water content in lubricating oil exceeds a set value.
Drawings
Fig. 1 is a schematic structural diagram of a self-lubricating system for dam hydroelectric power generation.
Fig. 2 is a schematic diagram of the internal circulation of a self-lubricating system for hydroelectric power generation of a dam according to the invention.
Fig. 3 is a schematic diagram of the external circulation of a self-lubricating system for hydroelectric power generation of a dam according to the present invention.
Fig. 4 is a schematic view of a self-lubricating system cooler for dam hydro-electric power generation according to the present invention.
In the figure: 1. a main shaft; 2. water guide tiles; 3. a shaft collar; 4. a pump bore; 5. an upper oil hole; 6. a lower oil tank; 7. a tile seat; 8. an oil collecting tank; 9. a cooler; 10. a bearing body; 11. an upper oil tank; 12. a fuel tank cap; 13. a first conduit; 14. a second conduit; 15. an oil sump; 16. a third pipeline; 17. a current indicating relay; 18. a stop valve; 19. an oil filter; 20. a pressure gauge; 21. an electromagnetic flow meter; 22. a thermometer; 91. an inlet; 92. and (7) an outlet.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments, and all other embodiments obtained by those skilled in the art without any creative work based on the embodiments of the present invention belong to the protection scope of the present invention.
Example 1
As shown in fig. 1, a self-lubricating system for dam hydroelectric power generation comprises a water guiding bearing mechanism and a self-lubricating mechanism, wherein the water guiding bearing mechanism comprises a bearing body 10, an upper oil tank 11, an oil collecting tank 8 and a main shaft 1, a shaft collar 3, a pump hole 4 and an upper oil hole 5 are arranged on the main shaft 1, the pump hole 4 is arranged on the shaft collar 3, a first pipeline 13 is arranged at the output end of the oil collecting tank 8, one side of the first pipeline 13 is connected with the main shaft 1 through the upper oil hole 5, the shaft collar 3 of the main shaft 1 is connected with the bearing body 10 through a water guiding tile 2, the output end of the bearing body 10 is connected with the input end of the oil collecting tank 8 through a second pipeline 14, the lower oil tank 6 is arranged at the output end of the shaft collar 3 and the lower end of the water guiding tile 2, the output end of the lower oil tank 6 is connected with the side wall of the first pipeline 13, the output end bearing body 10 of the first pipeline 13 is, one side of the bearing body 10 is connected to one end of the oil tank cover through an upper oil tank 11, and the other end of the oil tank cover 12 is connected with the main shaft 1.
Example 2
With reference to fig. 2 and 4, a self-lubricating system for dam hydroelectric power generation comprises a water guide bearing mechanism and a self-lubricating mechanism, wherein the water guide bearing mechanism comprises a bearing body 10, an upper oil tank 11, an oil collecting tank 8 and a main shaft 1, the main shaft 1 is provided with a shaft collar 3, a pump hole 4 and an upper oil hole 5, the pump hole 4 is arranged on the shaft collar 3, the output end of the oil collecting tank 8 is provided with a first pipeline 13, one side of the first pipeline 13 is connected with the main shaft 1 through the upper oil hole 5, the shaft collar 3 of the main shaft 1 is connected with the bearing body 10 through a water guide tile 2, the output end of the bearing body 10 is connected with the input end of the oil collecting tank 8 through a second pipeline 14, the output end of the shaft collar 3 and the lower end of the water guide tile 2 are provided with a lower oil tank 6, the output end of the lower oil tank 6 is connected with the side wall of the first pipeline 13, the output end of the first pipeline 13 is connected with the, one side of the bearing body 10 is connected to one end of the oil tank cover through an upper oil tank 11, and the other end of the oil tank cover 12 is connected with the main shaft 1.
The water guide bearing is by the bearing body, the water guide tile, go up the oil tank, the sump oil tank, oil tank cap and annex are constituteed, wherein the hydraulic turbine main shaft is the rotating member, the pump hole sets up on main shaft journal collar, rotatory along with the main shaft, all the other parts are static, fix on the top cap with the round pin after the bearing body on the top cap is centered in the building site, the bearing body bears the radial force that passes through the resistance to compression piece transmission by the water guide tile and transmits to the top cap on, the inside oily lubrication system that is the system independence of bearing, lubricating oil can circulate through journal collar and water guide tile under the rotatory drive that produces centrifugal force of main shaft, the cooler adopts the cooling water that is provided by the power station to cool off, sufficient cooling capacity has.
Example 3
With reference to fig. 1 and 3, a self-lubricating system for dam hydroelectric power generation comprises a water guide bearing mechanism and a self-lubricating mechanism, wherein the water guide bearing mechanism comprises a bearing body 10, an upper oil tank 11, an oil collecting tank 8 and a main shaft 1, the main shaft 1 is provided with a shaft collar 3, a pump hole 4 and an upper oil hole 5, the pump hole 4 is arranged on the shaft collar 3, the output end of the oil collecting tank 8 is provided with a first pipeline 13, one side of the first pipeline 13 is connected with the main shaft 1 through the upper oil hole 5, the shaft collar 3 of the main shaft 1 is connected with the bearing body 10 through a water guide tile 2, the output end of the bearing body 10 is connected with the input end of the oil collecting tank 8 through a second pipeline 14, the output end of the shaft collar 3 and the lower end of the water guide tile 2 are provided with a lower oil tank 6, the output end of the lower oil tank 6 is connected with the side wall of the first pipeline 13, the output end of the first pipeline 13 is connected with the, one side of the bearing body 10 is connected to one end of the oil tank cover through an upper oil tank 11, and the other end of the oil tank cover 12 is connected with the main shaft 1.
Self-lubricating mechanism includes oil trap 15 and cooler 9, water guide shoe 2 is connected to oil trap 15 through tile seat 7, the output of the pump hole 4 on the collar 3 is connected to oil trap 15, the output of oil trap 15 is connected to cooler 9 through third pipeline 16, import 91 and export 92 are established to the upper end of cooler 9.
The second pipeline 14 is provided with a flow relay 17, a stop valve 18, an oil filter 19 and a thermometer 22 in sequence, and the third pipeline 16 is provided with a pressure gauge 20, an electromagnetic flow meter 21, a thermometer 22 and a stop valve 18 in sequence.
The filtering element of the oil filter 19 is a filtering sheet made of metal mesh, and the filtering precision Z1 is 3-40 microns.
The oil flow circulating power of the whole pipeline system of the external circulating structure of the guide bearing collar pump of the water turbine is generated by the collar pump, a plurality of radial or inclined pump holes related to the rotation direction of the main shaft are processed on the shaft collar to form a shaft collar pump, the oil collecting groove is arranged at the outer edge of the pump hole and is used for collecting hot oil pumped out by the shaft collar and sending the hot oil into the pipeline system, the pressure display controller and the electromagnetic flowmeter are arranged in the pipeline system and are used for monitoring the running state of the pipeline system, the bearing cooler is arranged outside the oil tank and is connected with the oil tank into a loop by the oil pipe, the valve and other devices, the cooler is arranged outside the oil tank, the cooler is convenient for the overhaul and maintenance of the cooler, the volume of the bearing oil tank is favorably reduced, the installation height of the bearing is reduced, and the oil pump and auxiliary equipment can be saved, and oil circulation can be established when the unit is started, so that oil cut-off accidents caused by problems of an external oil pump control system are well avoided.
Example 4
On the basis of embodiment 3, a self-lubricating system for dam hydroelectric power generation comprises a water guide bearing mechanism and a self-lubricating mechanism, wherein the water guide bearing mechanism comprises a bearing body 10, an upper oil tank 11, an oil collecting tank 8 and a main shaft 1, the main shaft 1 is provided with a shaft collar 3, a pump hole 4 and an upper oil hole 5, the pump hole 4 is arranged on the shaft collar 3, the output end of the oil collecting tank 8 is provided with a first pipeline 13, one side of the first pipeline 13 is connected with the main shaft 1 through the upper oil hole 5, the shaft collar 3 of the main shaft 1 is connected with the bearing body 10 through a water guide tile 2, the output end of the bearing body 10 is connected with the input end of the oil collecting tank 8 through a second pipeline 14, the output end of the shaft collar 3 and the lower end of the water guide tile 2 are provided with a lower oil tank 6, the output end of the lower oil tank 6 is connected with the side wall of the first pipeline 13, the output end of the first pipeline 13 is connected with the bearing body 10, one side of the bearing body 10 is connected to one end of the oil tank cover through an upper oil tank 11, and the other end of the oil tank cover 12 is connected with the main shaft 1.
Self-lubricating mechanism includes oil trap 15 and cooler 9, water guide shoe 2 is connected to oil trap 15 through tile seat 7, the output of the pump hole 4 on the collar 3 is connected to oil trap 15, the output of oil trap 15 is connected to cooler 9 through third pipeline 16, import 91 and export 92 are established to the upper end of cooler 9.
The second pipeline 14 is provided with a flow relay 17, a stop valve 18, an oil filter 19 and a thermometer 22 in sequence, and the third pipeline 16 is provided with a pressure gauge 20, an electromagnetic flow meter 21, a thermometer 22 and a stop valve 18 in sequence. The filtering element of the oil filter 19 is a filtering sheet made of metal mesh, and the filtering precision Z1 is 3-40 microns.
The oil level annunciator and the oil level switch are positioned in the upper oil tank, the oil mixing alarm device is positioned in the lower oil tank, the tile temperature annunciator is arranged in the water guide tile, the oil temperature annunciator is arranged in the oil collecting tank, the oil level annunciator and the oil level switch are positioned in the upper oil tank of the bearing, the oil mixing alarm device is positioned in the lower oil tank, and when the oil level is too high or too low and the water content in the lubricating oil exceeds the specification, an alarm signal is sent.
A tile temperature annunciator is arranged in the water guide tile, and an oil temperature annunciator is arranged in the oil collecting tank. The tile temperature annunciator is a first temperature sensor, and the oil temperature annunciator is a second temperature sensor; the first temperature sensor and the second temperature sensor are both connected with a controller through a wireless transmission module, and the controller is connected with an audible and visual alarm; when the temperature detected by the first temperature sensor or the second temperature sensor exceeds a preset threshold value, the controller controls the audible and visual alarm to give an alarm. Different sounds and different light are arranged on the audible and visual alarm to distinguish which of the first temperature sensor and the second temperature sensor exceeds a preset threshold value.
The threshold corresponding to the first temperature sensor is T1, the threshold corresponding to the second temperature sensor is T2, and T1 is greater than or equal to T2, and the unit is centigrade.
In order to better realize the filtering and improve the lubricating capacity, the filtering precision Z1 of the oil filter 19, the threshold T1 corresponding to the first temperature sensor and the threshold T2 corresponding to the second temperature sensor satisfy the following conditions:
Z1＝α·(T2/T1)+Z0；
wherein Z0 is the adjusting precision and the value range is 2-15 microns, and α is the adjusting coefficient and the value range is 0.35-12.4.
Example 5
The radial load FT of the bearing body satisfies: fT＝f1·H·[(L1+L2)/L2]2Wherein f is1The radial force coefficient of the water guide shoe is shown, H represents the maximum water head (m) when the impeller of the water turbine runs, and L1Indicating the length (m), L of the lower guide bearing of the generator from the bearing body2The length (m) of the bearing body from the turbine runner is indicated.
The tile number Z of the water guide tile is 18, the water guide tile adopts a fan-shaped tile, the ratio of the length L to the width B of the water guide tile is 1, and Fp/(B.L) is less than or equal to 3Mpa, wherein B represents the width (m) of the water guide tile, L represents the length (m) of the water guide tile, Z represents the tile number of the water guide tile, Fp represents the load of the water guide tile, and Fp＝0.5FT/Z。
When the water guide bearing bears radial load, the relative positions of the water guide shoes and the load direction are different, the bearing capacity of the water guide shoes is also different, when the load of the water guide shoes reaches the maximum and the oil film thickness is consistent at the load position, the bearing capacity of the bearing bush is the highest when the load is positioned between the two bearing bushes, the minimum oil film thickness of the water guide bearing with the same diameter is reduced along with the increase of the number of the bearing bushes, and the oil film bearing capacity is reduced. The bearing block quantity reduces, can reduce the bearing temperature and improve the bearing capacity of axle bush.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalents and substitutions made within the scope of the present invention should be included.
Claims (7)
1. A self-lubricating system for dam hydroelectric power generation, its characterized in that: the oil collecting device comprises a water guide bearing mechanism and a self-lubricating mechanism, wherein the water guide bearing mechanism comprises a bearing body (10), an oil feeding tank (11), an oil collecting tank (8) and a main shaft (1), a shaft collar (3), a pump hole (4) and an oil feeding hole (5) are formed in the main shaft (1), the pump hole (4) is formed in the shaft collar (3), a first pipeline (13) is arranged at the output end of the oil collecting tank (8), one side of the first pipeline (13) is connected with the main shaft (1) through the oil feeding hole (5), the shaft collar (3) of the main shaft (1) is connected with the bearing body (10), and the output end of the bearing body (10) is connected with the input end of the oil collecting tank (8) through a second pipeline (14);
the self-lubricating mechanism comprises an oil collecting groove (15) and a cooler (9), the output end of the pump hole (4) in the shaft collar (3) is connected to the oil collecting groove (15), and the output end of the oil collecting groove (15) is connected to the cooler (9) through a third pipeline (16).
2. A self-lubricating system for dam hydro-power generation according to claim 1, characterized in that: the shaft collar (3) of the main shaft (1) is connected with the bearing body (10) through the water guide bush (2), and the water guide bush (2) is connected to the oil collecting tank (15) through the bush seat (7).
3. A self-lubricating system for dam hydro-power generation according to claim 1 or 2, characterized in that: the output end of the shaft collar (3) and the lower end of the water guide bush (2) are provided with the lower oil tank (6), the output end of the lower oil tank (6) is connected with the side wall of the first pipeline (13), and the output end of the first pipeline (13) is connected with the bearing body (10).
4. A self-lubricating system for dam hydro-power generation according to claim 1, characterized in that: the upper end of the cooler (9) is provided with an inlet (91) and an outlet (92).
5. A self-lubricating system for dam hydro-power generation according to claim 1, characterized in that: the second pipeline (14) is sequentially provided with a flow relay (17), a stop valve (18), an oil filter (19) and a thermometer (22).
6. A self-lubricating system for dam hydro-power generation according to claim 1, characterized in that: and a pressure gauge (20), an electromagnetic flowmeter (21), a thermometer (22) and a stop valve (18) are sequentially arranged on the third pipeline (16).
7. A self-lubricating system for dam hydro-power generation according to claim 1, characterized in that: go up the upper end of oil tank (11) and establish oil tank cap (12), bearing body (10) one side is connected to the one end of oil tank cap through last oil tank (11), main shaft (1) is connected to the other end of oil tank cap (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911344562.7A CN110985867A (en) | 2019-12-24 | 2019-12-24 | Self-lubricating system for dam hydroelectric power generation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911344562.7A CN110985867A (en) | 2019-12-24 | 2019-12-24 | Self-lubricating system for dam hydroelectric power generation |
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| CN110985867A true CN110985867A (en) | 2020-04-10 |
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| CN201911344562.7A Withdrawn CN110985867A (en) | 2019-12-24 | 2019-12-24 | Self-lubricating system for dam hydroelectric power generation |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112253351A (en) * | 2020-10-26 | 2021-01-22 | 湖南谨航科技开发有限公司 | High-efficiency energy-saving cooling device |
| CN112797303A (en) * | 2021-01-25 | 2021-05-14 | 湖南省水利投地方电力有限公司 | Power station generator oil groove anomaly detection device |
| CN113154239A (en) * | 2021-03-30 | 2021-07-23 | 德州鸿途矿山机械有限公司 | Thin oil lubrication self-circulation system of vibrating screen |
| CN114484253A (en) * | 2022-01-17 | 2022-05-13 | 东方电气集团东方电机有限公司 | Lubricating oil circulating system for mirror plate pump bearing |
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|---|---|---|---|---|
| CN112253351A (en) * | 2020-10-26 | 2021-01-22 | 湖南谨航科技开发有限公司 | High-efficiency energy-saving cooling device |
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| CN113154239A (en) * | 2021-03-30 | 2021-07-23 | 德州鸿途矿山机械有限公司 | Thin oil lubrication self-circulation system of vibrating screen |
| CN114484253A (en) * | 2022-01-17 | 2022-05-13 | 东方电气集团东方电机有限公司 | Lubricating oil circulating system for mirror plate pump bearing |
| CN114484253B (en) * | 2022-01-17 | 2023-08-25 | 东方电气集团东方电机有限公司 | Lubricating oil circulation system for mirror plate pump bearing |
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