CN114646013A - Lubricating oil circulating system for heavy-load bearing of wind generating set - Google Patents
Lubricating oil circulating system for heavy-load bearing of wind generating set Download PDFInfo
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- CN114646013A CN114646013A CN202011498054.7A CN202011498054A CN114646013A CN 114646013 A CN114646013 A CN 114646013A CN 202011498054 A CN202011498054 A CN 202011498054A CN 114646013 A CN114646013 A CN 114646013A
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- 239000010687 lubricating oil Substances 0.000 title claims abstract description 31
- 239000004519 grease Substances 0.000 claims abstract description 144
- 239000003921 oil Substances 0.000 claims abstract description 111
- 238000006073 displacement reaction Methods 0.000 claims abstract description 53
- 238000002347 injection Methods 0.000 claims abstract description 12
- 239000007924 injection Substances 0.000 claims abstract description 12
- 238000005461 lubrication Methods 0.000 claims abstract description 10
- 239000013589 supplement Substances 0.000 claims abstract description 6
- 241000834287 Cookeolus japonicus Species 0.000 claims abstract description 4
- 238000007599 discharging Methods 0.000 claims abstract description 4
- 239000012535 impurity Substances 0.000 claims description 53
- 238000001514 detection method Methods 0.000 claims description 51
- 230000001502 supplementing effect Effects 0.000 claims description 42
- 230000005540 biological transmission Effects 0.000 claims description 29
- 230000009471 action Effects 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 10
- 238000012806 monitoring device Methods 0.000 claims description 10
- 230000001960 triggered effect Effects 0.000 claims description 9
- 238000001914 filtration Methods 0.000 claims description 8
- 230000033001 locomotion Effects 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 6
- 238000004891 communication Methods 0.000 claims description 3
- 244000309464 bull Species 0.000 claims description 2
- 230000004044 response Effects 0.000 claims description 2
- 230000001050 lubricating effect Effects 0.000 description 25
- 230000002035 prolonged effect Effects 0.000 description 8
- 238000012423 maintenance Methods 0.000 description 7
- 238000005299 abrasion Methods 0.000 description 5
- 230000000903 blocking effect Effects 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 239000000945 filler Substances 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 239000002923 metal particle Substances 0.000 description 3
- 230000007812 deficiency Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000877 morphologic effect Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
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- 239000000523 sample Substances 0.000 description 1
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- 239000010959 steel Substances 0.000 description 1
- 239000002699 waste material Substances 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
- F16N—LUBRICATING
- F16N11/00—Arrangements for supplying grease from a stationary reservoir or the equivalent in or on the machine or member to be lubricated; Grease cups
- F16N11/08—Arrangements for supplying grease from a stationary reservoir or the equivalent in or on the machine or member to be lubricated; Grease cups with mechanical drive, other than directly by springs or weights
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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
- F16N19/00—Lubricant containers for use in lubricators or lubrication systems
- F16N19/006—Maintaining oil level
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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
- F16N21/00—Conduits; Junctions; Fittings for lubrication apertures
- F16N21/04—Nozzles for connection of lubricating equipment to nipples
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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
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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
- F16N39/06—Arrangements for conditioning of lubricants in the lubricating system by filtration
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- General Details Of Gearings (AREA)
Abstract
The invention belongs to the technical field of fans, and particularly relates to a lubricating oil circulating system for a heavy-load bearing of a wind generating set. The device comprises a main shaft, a main bearing, a circulation trigger device, a piston rod and a grease circulation device; the main shaft is provided with a main bearing, and the main bearing is provided with an oil filling hole and an oil discharging hole; an oil filling pipe of the grease circulating device is connected with the oil filling hole, and an oil suction pipe of the grease circulating device is connected with the oil discharge hole; a circulating trigger device is arranged on the periphery of the main shaft; the grease circulating device is connected with one end of the piston rod; the other end of the piston rod is provided with a bull-eye wheel which is used for being in contact triggering with the circulating triggering device; the main shaft rotates, the piston rod is in contact with the circulation trigger device to drive the piston rod to reciprocate, the grease circulation device sucks lubricating oil flowing out of the main bearing, and the lubricating oil flows back to the main bearing oil injection hole after being filtered to supplement the lubricating oil; and the upper side and the lower side of the main shaft are provided with main shaft displacement sensors. The invention can realize the circulating flow lubrication of the bearing and prolong the service life of the main bearing.
Description
Technical Field
The invention belongs to the technical field of fans, and particularly relates to a lubricating oil circulating system for a heavy-load bearing of a wind generating set.
Background
According to statistics of related enterprises, phenomena such as main bearing abrasion and backward movement of a transmission chain occur in a 1.5MW double-fed wind generating set within 2-3 years of grid-connected operation, the phenomena do not cause enough attention of an owner to follow-up, major equipment faults such as main bearing roller falling, bearing outer ring fracture and the like occur after the wind generating set is continuously operated for a few years, and the wind generating set is stopped.
If such a fault is repaired, a crane needs to be hired to replace the transmission chain assembly in the air, the field construction is influenced by various aspects such as weather, environment, personnel quality and the like, and the assembly quality is difficult to ensure. If the newly replaced transmission chain assembly and the speed increasing box cannot meet the design requirements, the assembly processes of doping impurities on the installation surface of the main shaft and the speed increasing box, misalignment of the axis of the main shaft and the axis of the locking disc, forced large-torque installation of the locking disc and the like are not controlled, the fault of damage of the main bearing is easily reoccurred in the continuous service process of the fan, secondary faults such as tooth breakage fault inside the speed increasing box and breakage of an elastic supporting rubber body of the speed increasing box can be caused, a huge amount of maintenance cost can be generated in the 20-year service period of the fan, the shutdown time is long, the power generation capacity of the wind power plant is reduced, and the benefit of an owner is lost.
The phenomenon that a certain fan moves backwards in China is mainly caused by the fact that lubricating grease in the main bearing is concentrated on the lower portion of the bearing and is blackened and hardened, the amount of lubricating grease on the upper portion of the main bearing is obviously insufficient, and metal particles exist. The bearing is not well lubricated in the operation process, the blackened lubricating grease can not provide a lubricating protective film for the roller raceway when the bearing operates, the roller is in steel-to-steel contact with the raceway at the film breaking position, a large amount of friction heat is generated during movement, so that the contact surface material is quenched and accompanied with microscopic protrusions, and after the bearing continues to operate, the protrusions are continuously increased to form hard particles which fall into the bearing, so that the bearing is subjected to morphological analysis of early wear of the bearing. If the grease is not cleaned and replaced in the state, the hard metal particles are mixed in the running bearing, the hard particles are pressed into the raceway by the roller, the surface of the raceway is raised, more metal particles fall off, the bearing runs for a long time, and finally the contact surface abrasion of the roller raceway is formed.
Disclosure of Invention
Aiming at the technical problems, the lubricating oil circulating system for the heavy-duty bearing of the wind generating set is provided, the bearing can be lubricated in a circulating flow mode, and the service life of the main bearing is prolonged. The purpose of the invention is realized by the following technical scheme: a lubricating oil circulating system for a heavy-load bearing of a wind generating set comprises: the device comprises a main shaft, a main bearing, a circulation trigger device, a piston rod and a grease circulation device;
the main shaft is provided with a main bearing, and the main bearing is provided with an oil filling hole and an oil discharging hole; an oil filling pipe of the grease circulating device is connected with the oil filling hole, and an oil suction pipe of the grease circulating device is connected with the oil discharge hole;
a circulating trigger device is arranged on the periphery of the main shaft;
the grease circulating device is connected with one end of the piston rod; the other end of the piston rod is provided with a bull-eye wheel which is used for being in contact triggering with the circulating triggering device;
the main shaft rotates, the piston rod is in contact with the circulation trigger device to drive the piston rod to reciprocate, the grease circulation device sucks lubricating oil flowing out of the main bearing, and the lubricating oil flows back to the main bearing oil injection hole after being filtered to supplement the lubricating oil;
and the upper side and the lower side of the main shaft are provided with main shaft displacement sensors.
Furthermore, the number of the main shaft displacement sensors is 4, and the main shaft displacement sensors are respectively positioned on the upper side and the lower side of the main shaft on the two sides of the main bearing.
Further, grease circulating device is including circulating device, plunger valve, benefit fat jar, grease squirt, return oil filter and the grease impurity detection sensor who connects gradually, oil drain hole on the circulating device connects the base bearing, and the notes oil pipe that links to each other with grease impurity detection sensor is connected with the oil filler point, forms the lubricating oil circulation.
Furthermore, the grease circulating device also comprises a cabinet body, a guide seat and a reset device, wherein the guide seat is arranged in the cabinet body; the piston rod penetrates through the guide seat, one end of the piston rod provided with a bull's eye wheel (22) extends out of the guide seat and the cabinet body to be in contact with a circulating trigger device arranged on the main shaft, and the other end of the piston rod is connected with the oil ejector through a reset device; the guide seat is provided with a guide sleeve through which the piston rod passes.
Furthermore, arc-shaped bulges are uniformly arranged on the outer circle of the sleeving main shaft at intervals in the circulating trigger device, and an anti-skid adhesive is pasted between the trigger device and the main shaft for skid prevention; the maximum thickness of the circulation triggering device is larger than or equal to the maximum stroke of the piston rod.
Furthermore, the reset device comprises a reset spring and a spring stop block, the piston rod is provided with the spring stop block, and the piston rod between the spring stop block and the oil injector is sleeved with the reset spring.
Further, still be provided with monitoring device, lack fat alarm sensor, oiling filtration jam sensor, grease impurity detection sensor including the control panel and with control panel signal connection's fat supplementing jar, fat supplementing jar lacks fat alarm sensor and connects fat supplementing jar, detects fat supplementing jar and lacks the fat state, the oiling filters the jam sensor and connects the oil return filter, detects the jam state of oil return filter, grease impurity detection sensor connects the grease detection, detects grease impurity content, and fat supplementing jar lacks fat alarm indicator, oiling filtration jam indicator, all connects the control panel of grease impurity detection sensor alarm indicator, reports to the police through the pilot lamp.
Further, still be provided with flow monitoring device, including oiling volume sensor and check point, oiling volume sensor sets up corresponding spring dog department on the cabinet body, and the check point sets up on the piston rod, and when the piston rod drove the check point motion, triggered oiling volume sensor response count, and oiling volume sensor's signal end connection control panel draws out and shows oiling volume through the control panel.
The device is characterized by further comprising a main shaft displacement detection device, wherein the main shaft displacement detection device comprises a transmission chain front displacement sensor, a transmission chain rear displacement sensor and corresponding indicator lights, the transmission chain front displacement sensor and the transmission chain rear displacement sensor are respectively arranged on an elastic supporting seat of a gear box connected with the main shaft, the positions of the two ends of the gear box are respectively corresponding to the positions of the two ends of the gear box, the front and rear displacements of the gear box are detected, signal ends of the transmission chain front displacement indicator light and the transmission chain rear displacement indicator light are both connected with a control board, and when the displacements occur, the control board controls the transmission chain front displacement indicator lights and the transmission chain rear displacement indicator lights to display;
the main bearing is also provided with a main bearing temperature sensor, the signal end of the main bearing temperature sensor is connected with a control board, the signal output end of the control board is connected with a main bearing operation fault indicator lamp, the signal end of the main bearing temperature sensor is connected with the control board, the main bearing temperature is detected, and when the main bearing temperature exceeds a set temperature, the main bearing operation fault indicator lamp connected with the control board displays the main bearing temperature;
a grease supplementing tank is arranged between the plunger valve and the filter and used for supplementing missing grease, the signal input end of the grease supplementing tank is connected with the signal input end of the control panel, the signal output end of the control panel is connected with a grease supplementing tank grease shortage alarm indicator lamp, the signal end of the grease supplementing tank alarm sensor is connected with the control panel, the grease quantity of the grease supplementing tank is detected to reach an alarm line, and the alarm line is displayed through the grease supplementing tank alarm indicator lamp connected with the control panel;
grease impurity detection sensor is equipped with in oil return filter exit, and its signal terminal connection control panel signal input part, and grease impurity detection alarm indicator is connected to control panel signal output part, and grease impurity detection sensor's signal terminal connection control panel detects grease impurity, and impurity surpasss and sets for the index, detects alarm indicator through the grease impurity detection who is connected with the control panel and shows.
Further, the control method of the control panel comprises the following steps:
s1: the grease supplementing tank is controlled by the grease injecting sensor to supplement grease, and when the piston rod moves downwards to inject grease, the control panel controls the action of a grease injecting pump in the grease supplementing tank according to the number of times of circulating action and injects the grease into the oil return pipeline;
s2: protecting the fat supplementing action through a fat supplementing tank fat deficiency alarm sensor, and when the fat supplementing tank fat deficiency alarm sensor is triggered, indicating that fat is deficient or not in the fat supplementing tank, and the control panel does not execute the fat supplementing action at the moment;
s3: the oil impurity detection is carried out through an oil impurity detection sensor, the detection result is transmitted to a control panel through communication protocols such as 485 and the like for process display, and alarm parameters can be modified according to standard requirements and actual conditions;
s4: the oil impurity detection sensor is used for detecting oil impurities in the oil, the oil impurity detection sensor is used for detecting the oil impurities in the oil, and the oil impurity detection sensor is used for detecting the oil impurities in the oil.
The invention has the beneficial effects that:
1. the power source of the invention is a pure mechanical power source, and does not need any power source support, the mechanism is started along with the operation of the wind generating set, the lubricating grease in the main bearing sucks out the grease from the lower part of the heavy-duty bearing through the invention, and the grease is injected into the heavy-duty bearing from the upper part of the heavy-duty bearing after being circularly filtered to participate in the bearing lubrication, so that the lubricating grease is lubricated by a statically attached roller raceway and is changed into circulating flow lubrication, the lubricating environment of the roller raceway is greatly improved, and the service life of the main bearing is prolonged; the lubricating grease is automatically recycled, so that sufficient lubricating amount of the main bearing is provided, the occurrence of hardening failure of the lubricating grease is reduced, the service time of the lubricating grease is prolonged, and the period for replacing the lubricating grease is prolonged; and the lubricating grease is prevented from overflowing from the sealing ring to pollute the internal environment of the cabin, and the operation and maintenance working strength is reduced.
2. The invention has the advantages that the resetting device is arranged, so that the piston rod can be quickly reset after running, the reciprocating action of the piston rod is ensured, and the circulating flowing lubrication of lubricating grease is ensured; meanwhile, the grease hardening failure can be slowed down, the service life of the grease is prolonged, the period of grease replacement is prolonged, the replacement cost of the grease is reduced, and the environmental pollution is reduced.
3. The oil return filter is arranged on the oil injection pipeline of the oil injector to filter impurities in the grease, so that the cleanness of the lubricating grease injected into the main bearing is ensured, and the abrasion of the main bearing is reduced.
4. The grease supplementing tank is arranged between the oil return filter and the plunger valve and is used for supplementing grease which is lacked by the heavy-duty bearing after long-time running.
5. The invention is provided with a monitoring device, filter blockage sensors are arranged on oil return filters, and corresponding alarm indicating lamps connected with a control panel are arranged, so that when the blockage fault occurs due to excessive impurities, an alarm can be given to remind a user to clean and replace lubricating grease so as to detect the impurity components and analyze the carrying state of the main shaft. The control panel can remote connection fan control system, has remote status display and alarming function.
6. The monitoring device can also be provided with a flow monitoring device which can monitor the circulation flow of the lubricating oil; the temperature sensor is arranged on the main bearing to detect the temperature of the main bearing; displacement sensors are arranged at the positions of the elastic supporting seats at the two ends of the gear box, so that the main shaft displacement is detected, and meanwhile, the gear box has an alarm function; and operation and maintenance personnel can know the internal operation state of the main bearing.
7. By using the invention, the fan with serious abrasion can relieve the abrasion of the heavy-duty bearing, and can pay more attention to the condition that the new and near-installed unit has better use effect because the integrity of the heavy-duty bearing is higher, the service life can be prolonged, or the power operation is limited, or the frequency of replacing lubricating grease is reduced, or the maintenance time is planned in advance, so that the pollution caused by waste oil pollution discharge can be reduced, an owner can be in an active position, the maintenance plan of the fan is arranged according to the self condition, and various uncontrollable influences caused by passive shutdown are reduced.
Drawings
Fig. 1 is a schematic view of the mounting structure of the present invention.
Fig. 2 is a schematic top view of fig. 1.
FIG. 3 is a side view of FIG. 1
Fig. 4 is a schematic structural view of the grease circulating device of the present invention.
Fig. 5 is a schematic structural diagram of the cycle trigger device of the present invention.
Fig. 6 is a flow chart illustrating a grease circulation control of the control panel of fig. 2.
FIG. 7 is a flow chart of the operation of the monitoring device of the present invention;
wherein: 1-cabinet, 2-piston rod, 3-guide seat, 4-reset device, 41-reset spring, 42-spring block, 5-oil ejector, 51-oil ejector, 52-oil ejector, 6-detection point, 7-cabin base, 8-main shaft, 9-cycle trigger device, 10-main bearing, 101-oil ejector, 102 oil ejector, 11-grease impurity detection sensor, 12-control panel, 13-air switch, 14-lubricating oil flow sensor, 15-gear box, 16-elastic support seat, 17-transmission chain front displacement sensor, 18-transmission chain rear displacement sensor, 19-plunger valve, 20-oil return filter, 21-oil filter blockage sensor, 22-bull's eye wheel, 23-principal axis displacement sensor.
Detailed Description
The invention is described in detail below with reference to the figures and examples. Example (b): as shown in fig. 1, 2 and 3, a lubricating oil circulation system for a heavy-duty bearing of a wind generating set is mounted on a cabin base 7; the device comprises a main shaft 8, a main bearing 10, a circulating trigger device 9, a linkage mechanism 2, a grease circulating device and a grease impurity detection sensor 11;
the main shaft 8 is provided with a main bearing 10, and the main bearing 10 is provided with an oil filling hole 101 and an oil discharging hole 102; the oil filling pipe 51 of the grease circulating device is connected with the oil filling hole 101, and the oil suction pipe 52 of the grease circulating device is connected with the oil discharge hole 102;
a circulating trigger device 9 is arranged on the periphery of the main shaft 8;
the grease circulating device is connected with one end of the piston rod 2; the other end of the piston rod 2 is provided with a bull-eye wheel 22 which is used for contacting and triggering the circulating triggering device 9;
the main shaft 8 rotates, the piston rod 2 is in contact with the circulation trigger device 9, the piston rod 2 is driven to reciprocate, the lubricating oil flowing out of the oil discharge hole 102 of the main bearing 10 is sucked by the grease circulation device, filtered and then flows back to the main bearing oil injection hole 101, and lubrication is supplemented;
the upper and lower sides of the main shaft 8 are provided with main shaft displacement sensors 23.
Further, the grease circulating device comprises an oil injector 5 and an oil return filter 20 which are connected in sequence; 2 one end of piston rod is the free end for with circulation trigger device 9 contact trigger, oil squirt 5 is connected to the other end, and is rotatory through main shaft 8, and piston rod 2 and circulation trigger device 9 contact drive piston rod 2 reciprocating motion, and oil squirt 5 inhales the lubricating oil that main bearing 10 flowed out, filters the back through oil squirt 5 and return oil filter 20, flows back to main bearing 10 oil filler point 101 through grease impurity detection sensor 11 again, supplementary lubrication.
Further, an oil filling filter blockage sensor 21 is connected to the oil return filter 20, an oil filling amount sensor is connected to the oil injector 5, and the grease filling tank is provided with a grease filling tank lack-of-grease alarm sensor and a grease impurity detection sensor 11; and the signal end of each sensor is respectively connected with the control panel.
As shown in fig. 4, the grease circulation device further comprises a cabinet body 1, a guide seat 3 and a reset device, the guide seat 3 is installed in the cabinet body 1, the piston rod 2 penetrates through the guide seat 3, one end of the piston rod extends out of the guide seat 3, the cabinet body 1 is in contact with a circulation trigger device 9 arranged on a main shaft 8, and the other end of the piston rod is connected with the grease injector through the reset device. As shown in fig. 5, the circular trigger device 9 of this embodiment is formed by disposing arc-shaped protrusions at regular intervals along the outer periphery of the main shaft 8, and the maximum thickness of the circular trigger device 9 is equal to or greater than the maximum stroke of the piston rod 2.
Further, the return device 4 includes a return spring 41 and a spring stopper 42, the spring stopper 42 is provided on the piston rod 2, and the return spring 41 is fitted on the piston rod 2 between the spring stopper 42 and the lubricator 5. The piston rod 2 moves to the end of the oil injector 5 under the action of the circulation trigger device 9, and after the circulation trigger device 9 rotates along with the main shaft 8 and passes through the piston rod 2, the circulation trigger device resets under the action of the reset spring 41 and moves to the end of the main shaft 8, so that reciprocating motion is realized. The guide seat 3 is provided with a guide sleeve through which the piston rod 2 passes.
Further, as shown in fig. 6, the present invention is further provided with a monitoring device, which comprises a control panel 12, and a grease-filling tank grease-lack alarm sensor, a grease-filling filtering blocking sensor, a grease impurity detection sensor 11, a grease-filling tank grease-lack alarm indicator light, and a grease-filling filtering blocking sensor indicator light, which are in signal connection with the control panel 12, wherein the grease-filling filtering blocking sensor 21 is connected with the oil-return filter 20 to detect the blocking state of the oil-return filter 20, and the grease-filling tank grease-lack alarm indicator light, the grease-filling filtering blocking indicator light, and the control panel are connected to alarm through the indicator light. As shown in fig. 4, the present invention is further provided with a flow monitoring device, which includes an oil injection amount sensor 14 and a detection point 6, wherein the oil injection amount sensor 14 is arranged on the cabinet body 1 corresponding to the spring stopper 42, the detection point 6 is arranged on the piston rod 2, when the piston rod 2 drives the detection point 6 to move, the oil injection amount sensor 14 is triggered to sense, the number of times of the trigger sensing of the detection point 6 is detected, and a signal end of the oil injection amount sensor 14 is connected to the control board, and the oil injection amount is obtained and displayed through the control board.
Further, as shown in fig. 2 and 7, the present invention is further provided with a spindle displacement detection device, which includes a transmission chain front displacement sensor 17, a transmission chain rear displacement sensor 18 and corresponding indicator lights, wherein the transmission chain front displacement sensor 17 and the transmission chain rear displacement sensor 18 are respectively disposed on an elastic support base 16 of a gear box 15 connected with the spindle 8, and respectively correspond to positions at two ends of the gear box 15 to detect front and rear displacements of the gear box 15, signal ends of the transmission chain front displacement alarm indicator light and the transmission chain rear displacement alarm indicator light are both connected with a control board, and when a displacement occurs, the control board controls the transmission chain front displacement indicator lights and the transmission chain rear displacement alarm indicator lights to display.
As shown in fig. 6, a main bearing temperature sensor is further provided on the main bearing 10, and a probe PT100 sensor is adopted; the position is down in the base bearing after being located the installation, and its signal end connection control panel, control panel signal output part connect the base bearing operation alarm indicator, and the control panel is connected to the signal end of base bearing temperature sensor, detects the temperature of base bearing 10, when the high temperature surpassed the settlement temperature, shows through the base bearing operation alarm indicator who is connected with the control panel and indicates. The control panel 12 is also connected with an air switch 13 for controlling the power switch.
A grease supplementing tank is arranged between the plunger valve 19 and the filter and used for supplementing missing grease, the signal input end of the grease supplementing tank is connected with the signal input end of the control panel 12, the signal output end of the control panel 12 is connected with a grease supplementing tank grease shortage alarm indicator lamp, the signal end of a grease supplementing tank alarm sensor is connected with the control panel 12, the grease amount of the grease supplementing tank is detected, an alarm line is reached, and the display is carried out through the grease supplementing tank alarm indicator lamp connected with the control panel 12;
grease impurity detection sensor 11 is equipped with in oil return filter exit, and its signal terminal connection control panel 12 signal input part, and grease impurity detection alarm indicator is connected to control panel 12 signal output part, and grease impurity detection sensor 11's signal terminal connection control panel 12 detects grease impurity, and impurity surpasss and sets for the index, detects alarm indicator through the grease impurity detection who is connected with control panel 12 and shows.
Furthermore, the gear box 15 is provided with the front transmission chain displacement sensor 17 and the rear transmission chain displacement sensor 18, which sometimes cannot detect the deviation of the main shaft, and after research, the main shaft displacement sensors 23 are arranged near the main bearing 10 to solve the problem, wherein the number of the main shaft displacement sensors 23 is 4, and the main shaft displacement sensors are respectively positioned at the upper side and the lower side of the main shaft 8 at the two sides of the main bearing 10.
The control panel adopted by the embodiment is a singlechip, and the lubricating oil circulation control method comprises the following steps: s1: the grease supplementing tank is controlled by a grease supplementing tank grease shortage alarm sensor to supplement grease, and when the piston rod moves downwards to inject grease, the control panel 12 controls the action of an oil injection pump in the grease supplementing tank according to the number of times of circulating action and injects the grease into an oil return pipeline;
s2: the fat-supplementing action is protected by a fat-supplementing tank fat-lacking alarm sensor on the fat-supplementing tank, when the fat-supplementing tank fat-lacking alarm sensor is triggered, the fat-supplementing tank is lack of fat or is free of fat, and at the moment, the control panel 12 does not execute the fat-supplementing action;
s3: the oil impurity detection is carried out through the oil impurity detection sensor 11, the detection result is transmitted to the control panel through communication protocols such as 485 and the like for process display, and alarm parameters can be modified according to standard requirements and actual conditions;
s4: the oil impurity detection sensor 11 is used for detecting the digital alarm points, alarming is carried out, and when the alarm points are triggered, the control board 12 carries out alarm indication through the indicator lamps.
When the circulating lubricating device is used, firstly, the circulating trigger devices 9 are uniformly arranged on the same peripheral surface of a main shaft 8 at intervals, anti-skid stickers are pasted on contact surfaces, a circulating lubricating main body triggered by the circulating trigger devices 9 is arranged below the main shaft 8, and a piston rod 2 extending out of the main lubricating main body is positioned below the running peripheral central line of the circulating trigger devices; then, connecting an oil pipe of the grease circulating device, and connecting the oil suction pipe to the lubricator 5 of the grease circulating device of the invention from the oil discharge hole 102 at the bottom of the main bearing 10; the filler pipe 51 of the grease circulating device is connected to the filler hole 101 of the main bearing 10.
When the main shaft 8 of the fan starts to rotate, the circulating trigger device 9 on the main shaft 8 drives the piston rod 2 to move up and down in a reciprocating mode, and in order to avoid the piston rod 2 from shaking, the guide seat 3 is used for guiding and fixing; when the circulation trigger device 9 on the main shaft 8 starts to trigger the piston rod 2 to move downwards, the plunger valve 19 prevents oil from being sucked from the oil discharge hole 102, and oil sucked in the oil ejector 5 is filtered by an oil outlet filter from the oil injection pipe 51 and then injected into the main bearing 10;
when the heavy-duty bearing is blocked by excessive impurities, the grease of the conventional lubricating system of the heavy-duty bearing is changed from original static lubrication into dynamic lubrication, the power for mechanical structure operation comes from fan operation and operates along with the rotation of the main shaft bearing of the fan, the fan does not depend on electrical control, the system integration level is high, the structure is simple, the installation is convenient, and the later maintenance is free. The lubricating mode of the main shaft bearing is changed, the grease filtering function is increased, impurities in the lubricating grease are cleaned, grease hardening is slowed down, the operating environment of the main shaft bearing is improved, the service lives of the main shaft and the main shaft bearing can be prolonged, the using efficiency of the lubricating grease is improved, the maintenance cost of the lubricating grease is reduced, and the generating efficiency of a unit is improved. The auxiliary state detection function can supervise the running state of the circulating lubrication system, can timely find the displacement of the main shaft, early warns in advance to reduce loss, avoids causing major accidents, finally improves the utilization rate of equipment and increases the benefits of owners.
It should be understood that the detailed description of the present invention is only for illustrating the present invention and is not limited by the technical solutions described in the embodiments of the present invention, and those skilled in the art should understand that the present invention can be modified or substituted equally to achieve the same technical effects; as long as the use requirements are met, the method is within the protection scope of the invention.
Claims (10)
1. A wind generating set heavy load bearing lubricating oil circulation system which characterized in that: comprises a main shaft (8), a main bearing (10), a circulation trigger device (9), a piston rod (2) and a grease circulation device;
a main bearing (10) is arranged on the main shaft (8), and an oil filling hole (101) and an oil discharging hole (102) are formed in the main bearing (10); an oil filling pipe (51) of the grease circulating device is connected with an oil filling hole (101), and an oil suction pipe (52) of the grease circulating device is connected with an oil discharge hole (102);
a circulating trigger device (9) is arranged on the periphery of the main shaft (8);
the grease circulating device is connected with one end of the piston rod (2); the other end of the piston rod (2) is provided with a bull-eye wheel (22) which is used for being in contact with the circulating trigger device (9) for triggering;
the main shaft (8) rotates, the piston rod (2) is in contact with the circulation trigger device (9) to drive the piston rod (2) to reciprocate, the lubricating oil flowing out of the main bearing (10) is sucked by the grease circulation device, filtered and then flows back to the main bearing oil hole (101) to supplement lubrication;
and main shaft displacement sensors (23) are arranged on the upper side and the lower side of the main shaft (8).
2. The wind generating set heavy-duty bearing lubricating oil circulation system of claim 1, characterized in that: the number of the main shaft displacement sensors (23) is 4, and the main shaft displacement sensors are respectively positioned on the upper side and the lower side of the main shaft (8) on the two sides of the main bearing (10).
3. The wind generating set heavy-duty bearing lubricating oil circulation system of claim 1, characterized in that:
the grease circulating device comprises a circulating device, a plunger valve (19), a grease supplementing tank, an oil return filter (20) and a grease impurity detection sensor (11) which are sequentially connected, the circulating device is connected with an oil discharge hole (102) on the main bearing (10), and an oil filling pipe (51) connected with the grease impurity detection sensor (11) is connected with an oil filling hole (101) to form lubricating oil circulation.
4. The wind generating set heavy-duty bearing lubricating oil circulation system according to claim 1 or 3, characterized in that: the grease circulating device further comprises a cabinet body (1), a guide seat (3) and a reset device (4), wherein the guide seat (3) is installed in the cabinet body (1); the piston rod (2) penetrates through the guide seat (3), one end of the piston rod provided with a bull's eye wheel (22) extends out of the guide seat (3) and contacts with a circulating trigger device (9) arranged on the main shaft (8) and the other end of the piston rod is connected with the oil ejector (5) through a reset device (4); the guide seat (3) is provided with a guide sleeve through which the piston rod (2) passes.
5. The wind generating set heavy-duty bearing lubricating oil circulation system of claim 1, characterized in that: the circulating trigger device (9) is arc-shaped bulges which are uniformly arranged on the excircle of the sleeving main shaft (10) at intervals; the maximum thickness of the circulating trigger device (9) is larger than or equal to the maximum stroke of the piston rod (2).
6. The wind generating set heavy-duty bearing lubricating oil circulation system of claim 4, wherein: the resetting device (4) comprises a resetting spring (41) and a spring stop block (42), the piston rod (2) is provided with the spring stop block (42), and the resetting spring (41) is sleeved on the piston rod (2) between the spring stop block (42) and the oil injector (5).
7. The wind generating set heavy-duty bearing lubricating oil circulation system of claim 1, characterized in that: still be provided with monitoring device, filter jam sensor (21), mend fat jar and lack fat alarm sensor, mend fat jar including control panel (12) and with control panel signal connection's oiling and lack fat alarm indicator, oiling and filter jam sensor, grease impurity detection sensor (11) pilot lamp, oil return filter (20) are connected in oiling filtration jam sensor (21), detect the jam state of oil return filter (20) respectively, and the oiling filters jam indicator, mends fat jar and lacks fat alarm sensor, all connection control panel (12) of grease impurity detection warning, reports to the police through the pilot lamp.
8. The wind generating set heavy-duty bearing lubricating oil circulation system according to claim 1 or 7, characterized in that: still be provided with flow monitoring device, including oiling volume sensor and check point (6), oiling volume sensor sets up corresponding spring dog (42) department on the cabinet body (1), and check point (6) set up on piston rod (2), and when piston rod (2) drove check point (6) motion, triggered oiling volume sensor response count, oiling volume sensor's signal end connection control panel (12) reachs and shows oiling volume through control panel (12).
9. The wind generating set heavy-duty bearing lubricating oil circulation system according to claim 1 or 7, characterized in that: the device is also provided with a main shaft displacement detection device which comprises a transmission chain front displacement sensor (17), a transmission chain rear displacement sensor (18) and corresponding indicator lights, wherein the transmission chain front displacement sensor (17) and the transmission chain rear displacement sensor (18) are respectively arranged on an elastic supporting seat (16) of a gear box connected with the main shaft, respectively correspond to the positions at two ends of the gear box and detect the front and rear displacement of the gear box, the signal ends of the transmission chain front displacement indicator light and the transmission chain rear displacement indicator light are respectively connected with a control panel (12), and when displacement occurs, the control panel (12) is used for controlling the transmission chain front displacement indicator lights and the transmission chain rear displacement indicator lights to display;
the main bearing (10) is also provided with a main bearing temperature sensor, the signal end of the main bearing temperature sensor is connected with a control board (12), the signal output end of the control board (12) is connected with a main bearing operation fault indicator lamp, the signal end of the main bearing temperature sensor is connected with the control board (12) to detect the temperature of the main bearing (10), and when the temperature exceeds a set temperature, the temperature is displayed through the main bearing operation fault indicator lamp connected with the control board (12);
a grease supplementing tank is arranged between the plunger valve (19) and the filter and used for supplementing missing grease, the signal input end of the grease supplementing tank is connected with the signal input end of the control panel (12), the signal output end of the control panel (12) is connected with a grease supplementing tank grease shortage alarm indicator lamp, the signal end of a grease supplementing tank alarm sensor is connected with the control panel (12), the grease quantity of the grease supplementing tank is detected, an alarm line is reached, and the display is realized through the grease supplementing tank alarm indicator lamp connected with the control panel (12);
grease impurity detection sensor (11) are equipped with in oil return filter exit, and its signal terminal connection control panel (12) signal input part, and grease impurity detection alarm indicator is connected to control panel (12) signal output part, and grease impurity detection sensor's (11) signal terminal connection control panel (12) detect grease impurity, and impurity surpasss and sets for the index, detects alarm indicator through the grease impurity detection who is connected with control panel (12) and shows.
10. The wind generating set heavy-duty bearing lubricating oil circulation system of claim 1, characterized in that: the control method of the control board (12) comprises the following steps:
s1: the grease supplementing tank is controlled by the grease supplementing tank grease shortage alarm sensor to supplement grease, when the piston rod moves downwards to inject oil, the control panel (12) controls the action of an oil injection pump in the grease supplementing tank according to the number of times of circulating actions to inject oil into an oil return pipeline;
s2: the fat-supplementing action is protected by the fat-supplementing tank fat-lacking alarm sensor, when the fat-supplementing tank fat-lacking alarm sensor is triggered, the fat-supplementing tank is lack of fat or is free of fat, and at the moment, the control panel (12) does not execute the fat-supplementing action;
s3: the oil impurity detection is carried out through an oil impurity detection sensor (11), the detection result is transmitted to a control panel through communication protocols such as 485 and the like for process display, and alarm parameters can be modified according to standard requirements and actual conditions;
s4: the oil impurity detection sensor (11) is used for alarming through a digital alarm point, and when the alarm point is triggered, the control board (12) gives an alarm through an indicator light.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011498054.7A CN114646013A (en) | 2020-12-17 | 2020-12-17 | Lubricating oil circulating system for heavy-load bearing of wind generating set |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011498054.7A CN114646013A (en) | 2020-12-17 | 2020-12-17 | Lubricating oil circulating system for heavy-load bearing of wind generating set |
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| CN114646013A true CN114646013A (en) | 2022-06-21 |
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