CN211875642U - Intelligent lubricating system for rotating shaft type host - Google Patents
Intelligent lubricating system for rotating shaft type host Download PDFInfo
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- CN211875642U CN211875642U CN202020475311.4U CN202020475311U CN211875642U CN 211875642 U CN211875642 U CN 211875642U CN 202020475311 U CN202020475311 U CN 202020475311U CN 211875642 U CN211875642 U CN 211875642U
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Abstract
The utility model discloses an intelligent lubricating system of pivot class host computer, relate to the technical field of lubricating system, aim at solving the technical problem that the current lubricating oil system needs the manual backup pump that starts, is not convenient for realize the intelligent operation of whole lubricating system, and its technical scheme main points are including unit, oil feed pipeline, oil tank, main fuel feeding module, reserve fuel feeding module and direct current fuel feeding module all set up on the oil tank, main fuel feeding module, reserve fuel feeding module and direct current fuel feeding module are connected in the oil feed pipeline, the fuel feed pipeline is connected in the department of waiting to lubricate of unit; the device also comprises a control center, a liquid level control module, an oil temperature control module, a pressure control module, a high-pressure jacking shaft module, an energy storage control module, a cleanliness detection module and a test module which are matched. The effects of improving the automation and the intellectualization of the lubricating system are achieved.
Description
Technical Field
The utility model belongs to the technical field of lubricating system's technique and specifically relates to a pivot type host computer intelligent lubricating system is related to.
Background
The steam turbine is a rotary power machine which converts the energy of steam into mechanical work, is also called as a steam turbine, is mainly used as a prime motor of a generator set, can also directly drive various pumps, fans, compressors, ship propellers and the like, is main power equipment of a power plant, a metallurgical blower station and the like, and ensures that the safe and stable operation of the steam turbine is a precondition for smooth production and maximum benefit. The turbine lubricating oil system is used for providing lubrication for a support bearing, a thrust bearing, a turning gear and the like of the turbine and is equivalent to a blood circulation system of equipment.
Chinese patent with prior publication number CN105545382A discloses a thermal generator set steam turbine lubricating system, including the main pump lubrication unit, the main pump lubrication unit includes: the lubricating device comprises a main pump, an oil ejector, a main pump check valve and an oil cooler which are sequentially connected through oil pipes, wherein one end of the oil cooler is connected with the main pump check valve, and the other end of the oil cooler is communicated with a part to be lubricated through the oil pipes; the thermal generator set steam turbine lubricating system further comprises an alternating current pump lubricating unit and a direct current pump lubricating unit. During the starting and stopping processes of the unit, when the rotating speed of the main shaft is less than 2700-. When the main pump lubricating system and the alternating-current pump lubricating unit break down, the direct-current lubricating unit is started, and the outlet of the direct-current pump bypasses the oil cooler, so that the bearing is prevented from being broken and burning the bearing when the oil cooler breaks down, and the running safety and reliability of the unit are improved.
The above prior art solutions have the following drawbacks: the existing lubricating oil system needs to manually detect and judge the oil pump, and when the detection data is lower than the preset value, the standby pump is manually started, so that the intelligent operation of the whole lubricating system is inconvenient to realize, and the improvement is needed.
SUMMERY OF THE UTILITY MODEL
Not enough to prior art exists, the utility model aims to provide an intelligent lubricating system of pivot class host computer, it has the automation and the intelligent advantage that have improved lubricating system.
The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:
an intelligent lubricating system of a rotating shaft type host machine comprises a machine set, an oil supply pipeline, an oil tank, a main oil supply module, a standby oil supply module and a direct-current oil supply module, wherein the main oil supply module, the standby oil supply module and the direct-current oil supply module are all arranged on the oil tank; the method is characterized in that: the device also comprises a control center, a liquid level control module, an oil temperature control module and a pressure control module;
the liquid level control module comprises a liquid level detection unit arranged on the oil tank and a liquid level processing unit arranged in the control center, and the liquid level processing unit is connected to the liquid level detection unit to receive a liquid level signal detected by the liquid level detection unit and control the start and stop of the main oil supply module, the standby oil supply module and the direct-current oil supply module;
the oil temperature control module comprises an oil temperature detection unit for detecting oil temperature, an oil temperature processing unit arranged in a control center and an oil temperature adjusting unit connected in series in the oil supply pipeline, wherein the oil temperature processing unit is connected to the oil temperature detection unit to receive oil temperature signals detected by the oil temperature detection unit and control the oil temperature adjusting unit to adjust the oil temperature;
the pressure control module comprises a pressure detection unit arranged on the oil supply pipeline and a pressure processing unit arranged in the control center, wherein the pressure processing unit is connected to the pressure detection unit to receive a pressure signal obtained by detection of the pressure detection unit and start the standby oil supply module and/or the direct-current oil supply module.
By adopting the technical scheme, the control center detects the liquid level and the oil temperature of the lubricating oil in the lubricating system through the liquid level control module and the oil temperature control module, and prohibits the lubricating system from being started when the liquid level is lower than a preset value and the temperature is lower than the preset value, so that the safety of the unit is ensured; in addition, the control center detects the oil pressure in the lubricating system through the pressure control module, and the standby oil supply module is started in an interlocking manner when the oil pressure is lower than a set value, namely when the main oil supply module fails; therefore, the lubricating system of the monitoring unit is maintained in an intelligent operation mode so as to realize the uninterrupted operation of the unit, and the intelligent degree of the lubricating system is greatly improved.
The utility model discloses further set up to: and a high-pressure jacking shaft module is connected between the oil temperature adjusting unit and the unit in the oil supply pipeline and is controlled by a control center to jack up the rotor forcibly by extracting oil from the oil supply pipeline before the unit is started.
By adopting the technical scheme, the high-pressure jacking shaft module is convenient for automatically sucking lubricating oil from the oil supply pipeline before the unit is started and providing high pressure at the bearing of the unit to jack the rotor, so that an even oil film is formed at the rotor of the bearing, the probability of over-thin oil film at the rotor due to over-high rotor quality is reduced, and the unit can be stably and safely started under the condition of high quality.
The utility model discloses further set up to: and the oil supply pipeline is also connected with an energy storage control module, and the energy storage control module is controlled by a control center to adjust the pressure of the oil supply pipeline.
By adopting the technical scheme, the energy accumulator control module automatically balances the oil pressure in the oil supply pipeline by controlling the access of the control center through the air pressure at the air end of the energy accumulator, and when the oil pressure is increased suddenly, the oil end compresses the air end to buffer the increased oil pressure; when the oil pressure drops suddenly, the air end pushes the oil end, so that the suddenly dropped oil pressure is compensated; the accumulator makes the oil pressure in the oil supply pipeline tend to be stable, and the continuous and stable output of the oil pressure in a period can be ensured when the oil pump is switched, so that the continuous and stable lubrication of the bearing is ensured.
The utility model discloses further set up to: and the oil supply pipeline is also connected with a cleanliness detection module, and the cleanliness detection module is connected to the control center to transmit the cleanliness information of the lubricating oil obtained by detection to the control center.
Through adopting above-mentioned technical scheme, cleanliness detection module detects the particulate matter of supplying oil pipe way inside and feeds back the result of feedback to control center in real time, and control center reports to the police to operating personnel when the quantity of particulate matter is greater than the default and suggests to remind operating personnel in time to detect filtering component, in order to guarantee that the filter carries out stable filtration to lubricating oil, thereby has reduced the bearing wearing and tearing that too much particulate matter leads to in the lubricating oil.
The utility model discloses further set up to: the oil supply pipeline is provided with at least one set of test module at the position of a bearing at the farthest end of the unit, and the test module is used for carrying out online test on the working states of the main oil supply module, the standby oil supply module, the direct-current oil supply module and the interlocking function.
By adopting the technical scheme, the testing module can carry out online testing on the working states of the main oil supply module, the standby oil supply module, the direct-current oil supply module and the interlocking function, the main oil supply module, the standby oil supply module, the direct-current oil supply module and the interlocking function can not cause the shutdown of the unit while detecting the working states, thereby maintaining the continuous operation of the unit, and timely discovering the possible faults of the main oil supply module, the standby oil supply module, the direct-current oil supply module and the interlocking function through the testing module and timely reminding an operator to overhaul.
The utility model discloses further set up to: the test module comprises four groups of test assemblies, each group of test assemblies comprises a test orifice plate, a test pressure switch, a test electromagnetic valve, a test manual valve and a return pipeline, the test electromagnetic valve is used for simulating pressure reduction, and the control center is coupled to the test pressure switch to respond to a pressure signal from the test pressure switch and control the corresponding main oil supply module, the standby oil supply module, the direct-current oil supply module or the corresponding interlocking function to start.
Through adopting above-mentioned technical scheme, the test solenoid valve or the manual valve of test are opened and are simulated the oil pressure reduction in the oil feed case through return line backward flow oil feed case with fluid, and detect pressure reduction and feed back to control center through the test pressure switch, control center starts the main fuel feeding module that corresponds, reserve fuel feeding module, direct current fuel feeding module or interlocking function, thereby realized main fuel feeding module, reserve fuel feeding module, direct current fuel feeding module or interlocking function's on-the-spot detection, the accuracy and the intelligent degree that detect have been improved.
To sum up, the beneficial effects of the utility model are that:
1. the technology that a control center, a high-pressure top shaft module, an oil temperature control module and a liquid level control module are matched is adopted, and the control center monitors the pressure control module, the oil temperature control module and the liquid level control module to control the starting of a lubricating system, so that the effect of maintaining the safe starting of a unit is achieved;
2. the technology that the control center, the pressure control module, the energy storage control module and the cleanliness detection module are matched is adopted, and the control center monitors the pressure control module, the oil temperature control module and the liquid level control module, so that the safety and continuous operation effects of a unit in the operation process of the lubricating system are guaranteed;
3. the technology that a test pore plate, a test pressure switch, a test electromagnetic valve, a test manual valve and a return pipeline in a control center and a test module are matched is adopted, so that the effect of automatically carrying out on-site test on a main oil supply module, a standby oil supply module, a direct-current oil supply module or an interlocking function is achieved.
Drawings
Fig. 1 is a schematic diagram of an overall structure of an intelligent lubrication system for a spindle-type host in an embodiment;
FIG. 2 is a block diagram showing the control logic of the control center according to the embodiment;
FIG. 3 is a schematic diagram of a module structure for displaying a high-pressure top shaft in an embodiment;
FIG. 4 is a diagram illustrating a test module structure according to an embodiment of the present invention.
In the figure: 1. a unit; 11. an oil supply line; 110. a high pressure oil flow regulating valve; 12. an oil tank; 13. a main oil supply module; 14. a standby oil supply module; 15. a direct current oil supply module; 2. a control center; 3. a liquid level control module; 31. a liquid level detection unit; 311. a visual level gauge; 32. a liquid level processing unit; 4. an oil temperature control module; 41. an oil temperature detection unit; 42. an oil temperature processing unit; 43. an oil temperature adjusting unit; 431. a heater; 432. an oil cooler; 4321. a water quantity regulating valve; 5. a pressure control module; 50. an oil supply pore plate; 501. a pressure regulating valve; 51. a pressure detection unit; 52. a pressure processing unit; 6. a high pressure top shaft module; 61. a high pressure block valve; 62. a high pressure oil pump module; 621. a drain tube valve; 622. a drainage orifice plate; 623. an inlet check valve; 624. an exhaust aperture plate; 625. a high-pressure oil pump; 626. an outlet check valve; 627. a high pressure control valve; 7. an energy storage control module; 71. an energy storage device; 72. an energy storage oil path isolation valve; 73. an energy storage control valve; 74. a gas path isolation valve; 8. a cleanliness detection module; 81. a filter; 9. a test module; 91. testing the component; 911. testing the pore plate; 912. testing the pressure switch; 913. testing the electromagnetic valve; 914. testing the manual valve; 915. a return line.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Example (b):
an intelligent lubricating system for a rotating shaft type host machine refers to fig. 1 and 2 and comprises a unit 1, an oil supply pipeline 11, an oil tank 12, a main oil supply module 13, a standby oil supply module 14 and a direct-current oil supply module 15, wherein the unit 1 comprises a generator and a steam turbine connected with the generator through a coupler, and a plurality of bearings are arranged at the rotor of the steam turbine and the generator. The main oil supply module 13, the standby oil supply module 14 and the direct-current oil supply module 15 are all arranged on the oil tank 12, the main oil supply module 13 and the standby oil supply module 14 are mutually standby, and the main oil supply module 13 and the standby oil supply module 14 both adopt alternating-current oil pumps; the direct-current oil supply module 15 comprises a direct-current power supply, an inverter and an alternating-current oil pump, and the three oil supply modules can be controlled by the same control method conveniently. The main oil supply module 13, the standby oil supply module 14 and the direct-current oil supply module 15 are connected to the oil supply pipeline 11, and the oil supply pipeline 11 is connected to a to-be-lubricated part of a bearing of the unit 1 so as to lubricate the bearing of the unit 1.
Referring to fig. 1 and 2, the lubricating system further includes a control center 2, a liquid level control module 3, an oil temperature control module 4, and a pressure control module 5, where the control center 2 is a PLC or an industrial computer, and is preferably a PLC controller in this embodiment. The liquid level control module 3 comprises a liquid level detection unit 31 arranged on the oil tank 12 and a liquid level processing unit 32 arranged on the control center 2, wherein the liquid level detection unit 31 comprises a visual liquid level meter 311 arranged on the oil tank 12 and a remote transmission liquid level sensor L1 arranged on the oil tank 12, and the remote transmission liquid level sensor L1 is connected to the control center 2. The liquid level processing unit 32 is connected to the liquid level detecting unit 31 to receive the liquid level signal detected by the liquid level detecting unit 31 and control the start and stop of the main oil supply module 13, the standby oil supply module 14 and the direct current oil supply module 15, and when the liquid level is lower than the alarm point set by the control center 2, the main oil supply module 13, the standby oil supply module 14 and the direct current oil supply module 15 are not allowed to start, so as to ensure the safety of the lubricating system.
Referring to fig. 1 and 2, the oil temperature control module 4 includes an oil temperature detecting unit 41 for detecting an oil temperature, an oil temperature processing unit 42 provided at the control center 2, and an oil temperature adjusting unit 43 connected in series in the oil supply line 11, the oil temperature detecting unit 41 including a tank temperature sensor T1 mounted on the oil tank 12 and a line temperature sensor T2 mounted on the oil supply line 11; the oil temperature processing unit 42 sets the lowest temperature t1 of the oil tank 12 and the highest temperature t2 of the oil tank 12, the normal temperature t3 of a pipeline and the highest temperature t4 of the pipeline are lower than t1, the lubricating system cannot operate, the temperature of the lubricating oil system cannot be reduced to an appropriate range higher than t2, the lubricating oil system is normal within the range of t3 +/-2 ℃, and the temperature of a bearing is high due to the fact that the oil supply is higher than t 4. The oil temperature processing unit 42 is connected to the oil temperature detecting unit 41 to receive the oil temperature signal detected by the oil temperature detecting unit 41 and control the oil temperature adjusting unit 43 to adjust the oil temperature, the oil temperature adjusting unit 43 includes a heater installed in the oil tank 12 and an oil cooler 432 installed on the oil supply pipeline 11, and a water amount adjusting valve 4321 is provided on a water inlet pipe of the oil cooler 432. A temperature sensor T3 is installed on a water inlet pipeline of the oil cooler 432, and the oil temperature adjusting unit 43 sets a cooling warning temperature T5 which is higher than T5 and can not reduce the oil supply temperature to an appropriate range by the lubricating oil system.
Referring to fig. 1 and 2, two oil supply pore plates 50 are connected in series in the oil supply pipeline 11, and pressure measuring points are arranged at two ends of the oil supply pore plates 50, so that the pressure at the two ends of the oil supply pore plates 50 can be manually detected. The detected pressure can be input into the control center 2, and the flow passing through the oil supply orifice 50 is calculated, i.e. the real-time oil supply flow of the lubricating oil system. Two ends of one oil supply pore plate 50 are connected with a pressure regulating valve 501 in parallel, the pressure regulating valve 501 realizes fine regulation of pressure, the oil supply pore plate 50 connected with the pressure regulating valve 501 in parallel realizes large-range regulation of pressure, and the oil supply pressure of lubricating oil can be controlled.
Referring to fig. 1 and 2, the pressure control module 5 includes a pressure detection unit 51 disposed on the oil supply line 11 and a pressure processing unit 52 disposed in the control center 2, the pressure detection unit 51 includes an oil supply pressure transmitter P1 at the front end of the oil cooler 432 and a line pressure sensor P2 installed on the oil supply line 11, the pressure processing unit 52 is provided with an oil supply normal pressure P1, a line normal pressure P2 and a minimum pressure P3, an oil supply shortage below P1 causes a high bearing temperature, the range of P2 ± 0.02MPa is considered to be normal, and an oil supply shortage below P3 causes a high bearing temperature. The pressure processing unit 52 is connected to the pressure detecting unit 51 to receive the pressure signal detected by the pressure detecting unit 51 and start the backup oil supply module 14 and/or the direct current oil supply module 15; when the pressure is lower than p1, the pressure processing unit 52 sends out a 'pressure low' signal, the standby oil supply module 14 is started, and the direct-flow oil supply module 15 is started along with interlocking; when the reading pressure reading is below p3, pressure processing unit 52 signals "pressure Low" interlocking the operation of DC oil supply module 15.
Referring to fig. 2 and 3, a high-pressure jacking shaft module 6 is connected between the oil temperature adjusting unit 43 and the unit 1 in the oil supply pipeline 11, and the high-pressure jacking shaft module 6 is controlled by the control center 2 to jack up the rotor forcibly by extracting oil from the oil supply pipeline 11 before the unit 1 is started. The high-pressure top shaft module 6 comprises a high-pressure block valve 61, two sets of high-pressure oil pump modules 62 and a high-pressure sensor P4, wherein each high-pressure oil pump module 62 comprises a drainage pipe valve 621, a drainage hole plate 622, an inlet check valve 623, an exhaust hole plate 624, a high-pressure oil pump 625 and an outlet check valve 626, one end of the high-pressure block valve 61 is connected to the oil supply pipeline 11, the other end of the high-pressure block valve is connected to the drainage pipe valve 621, the other end of the drainage pipe valve 621 is connected to the drainage hole plate 622, the other end of; the pipeline where the drainage hole plate 622 and the inlet check valve 623 are located is connected to an oil inlet pipe of a high-pressure oil pump 625; the exhaust pipeline is connected between the high-pressure oil pump 625 and the pipeline where the drainage pore plate 622 is located, the exhaust pipeline is connected to the oil tank 12, and an exhaust pore plate 624 for detecting flow is further connected in series in the exhaust pipeline; an oil outlet pipe of the high-pressure oil pump 625 is connected to an outlet check valve 626, a high-pressure control valve 627 is connected in series between the outlet check valve 626 and the high-pressure oil pump 625, and the other end of the high-pressure control valve 627 is communicated with the oil tank 12. The outlet check valve 626 is commonly connected to a high pressure sensor P4 to draw oil from the oil tank 12 through a high pressure pump to the bearings to jack the rotor up when the pressure in the high pressure control valve 627 is below a preset value.
Referring to fig. 1 and 2, an energy storage control module 7 is further connected in the oil supply pipeline 11, the energy storage control module 7 is controlled by the control center 2 to adjust the pressure of the oil supply pipeline 11, the energy storage control module 7 includes a plurality of energy storages 71 connected in parallel, an energy storage oil way isolation valve 72 is installed at an oil end of each energy storage 71, and an energy storage control valve 73 and an oil way pressure sensor P11 are installed between each energy storage oil way isolation valve 72 and each energy storage 71; an air path isolation valve 74 is installed at the air end of the energy storage device 71, an air path pressure sensor P12 is installed between the air path isolation valve 74 and the energy storage device 71, the energy storage device 71 is connected into an oil path to absorb high pressure through the air end, and pressure compensation is carried out through the air end when the pressure is low, so that the stability of oil supply and oil pressure is ensured.
Referring to fig. 1 and 2, the oil supply pipeline 11 is further connected with a cleanliness detection module 8, the cleanliness detection module 8 is an online particulate matter detector, a filter 81 is further installed on one side of the oil cooler 432 close to the unit 1, and the cleanliness detection module 8 is connected to the control center 2 to transmit cleanliness information of lubricating oil obtained through detection to the control center 2 so as to prompt an operator to replace the filter 81 in time.
Referring to fig. 2 and 4, at least one set of test module 9 is arranged at the bearing of the oil supply pipeline 11 at the farthest end of the unit 1, and the test module 9 is used for performing online test on the working states of the main oil supply module 13, the standby oil supply module 14, the direct-current oil supply module 15 and the interlocking function.
Referring to fig. 2 and 4, the testing module 9 includes a testing control valve and four sets of testing assemblies 91, each set of testing assemblies 91 includes a testing orifice plate 911, a testing pressure switch 912, a testing electromagnetic valve 913, a testing manual valve 914 and a return line 915, the four testing orifice plates 911 are respectively connected to the testing control valve, the other ends of the orifice plates are connected to the testing electromagnetic valve 913, the testing electromagnetic valve 913 is connected to the return line 915, the return line 915 is connected to the oil tank 12, and the testing manual valve 914 is connected in parallel to the two ends of the testing electromagnetic valve 913. The test solenoid valve 913 is used for simulating a pressure drop, and the control center 2 is coupled to the test pressure switch 912 to respond to a pressure signal from the test pressure switch 912 and control the corresponding main oil supply module 13, the standby oil supply module 14, the direct-current oil supply module 15 or the start of the interlock function. The control center 2 controls the test electromagnetic valve 913 to open, the test hole plate 911 releases the pressure, the test pressure switch 912 detects the pressure drop and sends a signal to the control center 2, and the control center 2 sends a starting signal to the corresponding alternating current oil pump and detects the current parameter of the alternating current oil pump to test whether the fault occurs.
The working principle is as follows:
before the lubricating system is started, the liquid level control module 3 detects the liquid level in the oil tank 12 and transmits liquid level data to the control center 2, and the control center 2 controls the main oil supply module 13, the standby oil supply module 14 and the direct-current oil supply module 15 to forbid starting when the liquid level is lower than a liquid level alarm point. On the other hand, the oil temperature control module 4 detects the oil temperature and transmits the oil temperature data to the control center 2, and the control center 2 controls the lubricating system to prohibit starting and controls the oil temperature regulating unit 43 to heat up when the oil temperature is lower than the preset low temperature and controls the oil temperature regulating unit 43 to cool down when the oil temperature is higher than the preset high temperature; before the lubricating oil system is put into operation, if the temperature T1 is lower than T1, the temperature in the oil tank 12 is low. The oil temperature processing unit 42 issues a heater 431 on command, the heater 431 is in operation, and the temperature of the oil tank 12 slowly rises. Heater 431 is not allowed to be operated for a long time, and "operated for 4 hours" or "temperature in oil tank 12 has exceeded t 1" is set in oil temperature processing unit 42, and when either signal is triggered, heater 431 stops operating. If the temperature in the oil tank 12 has not reached the temperature 1, the oil temperature processing unit 42 again issues the heater 431 on command, and repeats the above control logic until the temperature in the oil tank 12 exceeds t 1. However, when heater 431 is commanded to be on more than 3 times, oil temperature processing unit 42 cannot automatically re-trip heater 431, and it is necessary to manually determine that heater 431 can be re-tripped. When the oil temperature T1 of the oil tank 12 exceeds T1, the main oil supply module 13 is allowed to start. After the lubricating oil system is put into operation, the oil cooler 432 is also put into operation, and when the temperature of T2 exceeds T2, an alarm signal is sent out to remind an operator to check and remove the fault reason.
After the lubricating oil system is put into operation, the detection data of the pipeline temperature sensor T2 on the lubricating oil supply pipeline 11 is transmitted to the control center 2 in real time, and the control center 2 compares the detection data with the temperature 3, adjusts the opening degree of the water quantity adjusting valve 4321, and increases or decreases the water quantity entering the oil cooler 432, thereby maintaining the temperature T2 of the lubricating oil pipeline within the range of T3 ± 2 ℃. When the temperature of the lubricating oil pipeline exceeds t4 or the temperature of the water pipeline exceeds t5, an alarm signal is sent out to remind an operator to check and remove the fault reason.
Then the lubricating system is started, then the control center 2 sends a control instruction to the high-pressure top shaft module 6, the high-pressure top shaft module 6 jacks up the rotor for starting the unit 1, the control center 2 controls the drainage pipe valve 621 in the high-pressure top shaft module 6 to be opened, the lubricating oil in the oil supply pipeline 11 enters the high-pressure top shaft module 6 and exhausts the air in the high-pressure top shaft module 6, and because the bottom of the oil suction pipe of the high-pressure oil pump 625 is provided with the check valve, the air in the oil suction pipe of the oil pump can only be exhausted back to the oil tank 12 through the air exhaust pipe of the oil pump by the air exhaust. The control center 2 starts the high-pressure oil pump 625 in the high-pressure top shaft module 6, the check valve at the bottom of the oil suction pipe of the high-pressure oil pump 625 is opened, and the high-pressure oil pump 625 sucks oil from the oil tank 12 and pumps the oil to the bearing of the unit 1. The oil supply at the bearing is regulated in flow rate by the high-pressure oil flow regulating valve 110 and adopting a pressure compensation type technology, the pressure switch on the oil outlet pipe of the high-pressure oil pump 625 detects the pressure of the high-pressure oil outlet pipe, the control center 2 sets a low-pressure threshold P7 and a high-pressure threshold P8 corresponding to the high-pressure sensor P4, the high-pressure oil pump module 62 is started when the pressure is lower than P7, and the high-pressure oil pump module 62 is closed when the pressure is higher than P8.
Each bearing oil supply port is provided with a high-pressure oil flow regulating valve 110, and the pressure compensation type flow regulation control technology is adopted, namely a two-way flow control valve is selected for flow regulation. The two-way flow control valve is composed of a fixed-differential pressure reducing valve and a throttle valve which are connected in series, namely, the pressure difference between the oil inlet and the oil outlet of the throttle valve is kept basically constant, so that the flow passing through the throttle valve is only related to the opening degree of a valve port and is not related to load pressure fluctuation. The lubricating oil system of the unit 1 adopts a two-way flow control valve, can keep the flow constant and is not influenced by pressure and temperature.
Then, the control center 2 starts the unit 1; after the unit 1 is started, the energy storage control module 7 stores energy and balances the pressure of the oil supply pipeline 11. The oil line pressure is checked through an oil line pressure sensor P11 in advance before the accumulator 71 is started, if the oil line pressure is not zero, the control center 2 closes the energy storage oil line isolation valve 72 at the oil line inlet of the accumulator 71 and slowly opens the energy storage control valve 73 to zero the pressure of the accumulator 71, and then slowly closes the energy storage control valve 73; if the oil pressure of the oil way is zero, the air can be inflated;
the control center 2 controls the gas path isolation valve 74 at the gas path inlet of the energy storage device 71 to be opened slowly, charges the gas end of the energy storage device 71 slowly, detects the gas path pressure by the gas path pressure sensor P12, closes the gas path isolation valve 74 slowly when the gas path pressure rises to a preset value, and completes the charging. The control center 2 slowly opens the energy storage oil path isolation valve 72, so that the energy storage device 71 is connected into the oil supply pipeline 11, the oil pressure is too high, the oil path compresses the air path, the oil pressure is reduced, and the air path compensates the oil pressure. Every month, the pressure on the gas path side of the accumulator 71 is detected by a gas path pressure sensor P12, and if the pressure is lower than a set value, the accumulator 71 is charged.
During the operation of the lubricating system, the pressure control module 5 detects the pressure in the oil supply line 11 and transmits the pressure data to the control center 2, and the pressure detection unit 51 includes an oil supply pressure transmitter P1 at the front end of the oil cooler 432 and a line pressure sensor P2 installed on the oil supply line 11. The pressure processing unit 52 is provided with a normal oil supply pressure p1, a normal pipeline pressure p2 and a minimum pressure p3, the bearing temperature is high due to the fact that oil supply is insufficient below p1, the bearing temperature is considered normal within the range of p2 +/-0.02 MPa, and the bearing temperature is high due to the fact that oil supply is insufficient below p 3. The pressure processing unit 52 is connected to the pressure detecting unit 51 to receive the pressure signal detected by the pressure detecting unit 51 and start the backup oil supply module 14 and/or the direct current oil supply module 15; when the reading of the pressure transmitter is lower than p1, the pressure processing unit 52 sends a "pressure low" signal, and the standby oil supply module 14 is started and simultaneously interlocks the direct-current oil supply module 15; when the line pressure sensor P2 pressure reading is below P3, the pressure processing unit 52 signals "pressure Low" interlocking the DC oil supply module 15.
After the operation for the preset time, the test module 9 tests the main oil supply module 13, the standby oil supply module 14, the direct-current oil supply module 15 or the interlock function. The main oil supply module 13 is tested, any oil supply module except the main oil supply module 13 runs, a test electromagnetic valve 913 corresponding to the main oil supply module 13 is opened, the test hole plate 911 is instantly decompressed, a test pressure switch 912 sends a signal to the control center 2, and the control center 2 controls the main oil supply module 13 to start; the control center 2 checks the parameters of the alternating-current oil pump in the main oil supply module 13 and compares the parameters with a normal value, when the test value is greater than the set value, the control center 2 outputs a signal that the main oil supply module 13 starts normally, controls the corresponding test electromagnetic valve 913 to close, and closes the main oil supply module 13 after delaying for 10 seconds; and outputting a fault of the main oil supply module 13 when the test value is smaller than the set value, and reminding an operator to overhaul.
The standby oil supply module 14 and the direct-flow oil supply module 15 are tested in sequence, when the standby oil supply module 14 is tested, any oil supply module except the standby oil supply module 14 operates, and when the direct-flow oil supply module 15 is tested, any oil supply module except the direct-flow oil supply module 15 operates.
The interlocking function is tested, the main oil supply module 13 or the standby oil supply module 14 operates, the test electromagnetic valve 913 corresponding to the interlocking function test is opened, the test pressure switch 912 sends a signal to the control center 2, the control center 2 controls the interlocking function to be started, namely, the standby oil supply module 14 or the main oil supply module 13 which are standby for each other are started, and the interlocking function of the main oil supply module 13 and the standby oil supply module 14 can be tested because of the mutual standby for each other. The control center 2 checks the parameters of the alternating-current oil pump and compares the parameters with normal values, and when the test value is greater than the set value, the control center 2 outputs a signal for starting the standby oil supply module 14 or the main oil supply module 13 to be normal, controls the corresponding test electromagnetic valve 913 to close, and closes the main oil supply module 13 after delaying for a period of time; and outputting an interlocking function fault when the test value is smaller than the set value, and reminding an operator to overhaul.
The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.
Claims (6)
1. The intelligent lubricating system for the rotating shaft type host comprises a unit (1), an oil supply pipeline (11), an oil tank (12), a main oil supply module (13), a standby oil supply module (14) and a direct-current oil supply module (15), wherein the main oil supply module (13), the standby oil supply module (14) and the direct-current oil supply module (15) are all arranged on the oil tank (12), the main oil supply module (13), the standby oil supply module (14) and the direct-current oil supply module (15) are connected to the oil supply pipeline (11), and the oil supply pipeline (11) is connected to a to-be-lubricated part of the unit (1); the method is characterized in that: the device also comprises a control center (2), a liquid level control module (3), an oil temperature control module (4) and a pressure control module (5);
the liquid level control module (3) comprises a liquid level detection unit (31) arranged on the oil tank (12) and a liquid level processing unit (32) arranged on the control center (2), and the liquid level processing unit (32) is connected to the liquid level detection unit (31) to receive a liquid level signal detected by the liquid level detection unit (31) and control the start and stop of the main oil supply module (13), the standby oil supply module (14) and the direct-current oil supply module (15);
the oil temperature control module (4) comprises an oil temperature detection unit (41) for detecting the oil temperature, an oil temperature processing unit (42) arranged in the control center (2) and an oil temperature adjusting unit (43) connected in series in the oil supply pipeline (11), wherein the oil temperature processing unit (42) is connected to the oil temperature detection unit (41) to receive an oil temperature signal detected by the oil temperature detection unit (41) and control the oil temperature adjusting unit (43) to adjust the oil temperature;
the pressure control module (5) comprises a pressure detection unit (51) arranged on the oil supply pipeline (11) and a pressure processing unit (52) arranged in the control center (2), wherein the pressure processing unit (52) is connected to the pressure detection unit (51) to receive a pressure signal detected by the pressure detection unit (51) and start the standby oil supply module (14) and/or the direct-current oil supply module (15).
2. The intelligent lubrication system for a spindle type host machine according to claim 1, wherein: the oil supply device is characterized in that a high-pressure jacking shaft module (6) is connected between the oil temperature adjusting unit (43) and the unit (1) in the oil supply pipeline (11), and the high-pressure jacking shaft module (6) is controlled by a control center (2) to jack up the rotor forcibly by extracting oil from the oil supply pipeline (11) before the unit (1) is started.
3. The intelligent lubrication system for a spindle type host machine according to claim 1, wherein: still be connected with energy storage control module (7) in oil supply pipeline (11), energy storage control module (7) are controlled by control center (2) and adjust the pressure of oil supply pipeline (11).
4. The intelligent lubrication system for a spindle type host machine according to claim 1, wherein: the oil supply pipeline (11) is also connected with a cleanliness detection module (8), and the cleanliness detection module (8) is connected to the control center (2) to transmit the cleanliness information of the lubricating oil obtained through detection to the control center (2).
5. The intelligent lubrication system for a spindle type host machine according to claim 1, wherein: the oil supply pipeline (11) is located at the position of a bearing at the farthest end of the unit (1) and is provided with at least one set of test module (9), and the test module (9) is used for carrying out online test on the working states of the main oil supply module (13), the standby oil supply module (14), the direct-current oil supply module (15) and the interlocking function.
6. The intelligent lubrication system for a spindle type host machine according to claim 5, wherein: the test module (9) comprises four groups of test assemblies (91), each group of test assemblies (91) comprises a test orifice plate (911), a test pressure switch (912), a test electromagnetic valve (913), a test manual valve (914) and a return pipeline (915), the test electromagnetic valve (913) is used for simulating pressure drop, and the control center (2) is coupled to the test pressure switch (912) to respond to a pressure signal from the test pressure switch (912) and control the corresponding main oil supply module (13), the spare oil supply module (14), the direct current oil supply module (15) or the start of an interlocking function.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020475311.4U CN211875642U (en) | 2020-04-03 | 2020-04-03 | Intelligent lubricating system for rotating shaft type host |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020475311.4U CN211875642U (en) | 2020-04-03 | 2020-04-03 | Intelligent lubricating system for rotating shaft type host |
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| Publication Number | Publication Date |
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| CN211875642U true CN211875642U (en) | 2020-11-06 |
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| CN202020475311.4U Active CN211875642U (en) | 2020-04-03 | 2020-04-03 | Intelligent lubricating system for rotating shaft type host |
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| Country | Link |
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| CN (1) | CN211875642U (en) |
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