CN115507283B - Lubricating oil system test control loop fault self-diagnosis method - Google Patents

Lubricating oil system test control loop fault self-diagnosis method Download PDF

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Publication number
CN115507283B
CN115507283B CN202211199298.4A CN202211199298A CN115507283B CN 115507283 B CN115507283 B CN 115507283B CN 202211199298 A CN202211199298 A CN 202211199298A CN 115507283 B CN115507283 B CN 115507283B
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Prior art keywords
oil pump
lubricating oil
condition
solenoid valve
exhaust fan
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CN115507283A (en
Inventor
安小民
王迪
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Wangting Power Generation Branch Of Shanghai Huadian Power Development Co ltd
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Wangting Power Generation Branch Of Shanghai Huadian Power Development Co ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16N—LUBRICATING
    • F16N7/00—Arrangements for supplying oil or unspecified lubricant from a stationary reservoir or the equivalent in or on the machine or member to be lubricated
    • F16N7/38—Arrangements for supplying oil or unspecified lubricant from a stationary reservoir or the equivalent in or on the machine or member to be lubricated with a separate pump; Central lubrication systems
    • 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
    • F16N23/00—Special adaptations of check valves
    • 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
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
    • Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Testing And Monitoring For Control Systems (AREA)

Abstract

The invention discloses a lubricating oil system test control loop fault self-diagnosis method, which comprises the following steps of: displaying an interrupt step in a first column of the picture, displaying interrupt conditions after the interrupt step, and setting an alarm reset button at the bottom of the picture; and establishing a walking feedback condition which does not meet the condition memorizing logic. The invention helps operators to accurately judge problems in time and make measures for preventing fault expansion, the oil system tests fault diagnosis pictures, step sequence numbers of step interruption of the oil system are displayed, the reasons of faults are generated in the step, the dependence of the operators on professional technicians is reduced, meanwhile, the technical requirements of the professionals are reduced, the operators can be helped to accurately judge the problems in time and make measures for preventing fault expansion, the fault processing efficiency is improved, and the safety of a unit is improved.

Description

Lubricating oil system test control loop fault self-diagnosis method
Technical Field
The invention relates to a lubricating oil system of a motor vehicle, in particular to a self-diagnosis method for faults of a test control loop of the lubricating oil system.
Background
The turbine lubrication oil system comprises: two lubrication oil pumps (one for one), one emergency oil pump, and three top shaft oil pumps (two for one); the pressure of the main lubricating oil pipe simulates three measuring points, two measuring points are opened and closed, and two solenoid valves are tested; one oil pump outlet pressure switch, one test solenoid valve; two (one for each) oil tank smoke exhaust fans, and one oil tank exhaust pressure analog measuring point; the above-mentioned equipment state signal and control signal are controlled by means of computer logic of control system DEH of the steam turbine.
The control system DEH of the steam turbine is realized by Siemens T3000-SPPA control software, and the control system DEH comprises the following components: a lubricating oil pump DCO (device manager) critical oil pump SLC (interlocking management) smoke exhaust fan DCO (device manager), a jackshaft oil pump DCO (device manager) is used for managing devices, the device is regulated to operate as a main device, the device is used as a standby pump, and the standby pump is started when the pressure is smaller than a fixed value through monitoring of a pressure measuring point; because the lubricating oil pump, the critical oil pump and the smoke exhaust fan equipment are in one operation and the other standby state for a long time, after a period of operation, the standby pump and the standby fan are required to be started regularly, and the operation condition of the equipment and the monitoring and inspection of the pressure measuring point are inspected, so that the normal operation of the lubricating oil system is ensured. Thus, the DEH control logic has: the lubricating oil system test control loop, i.e. the lubricating oil control logic is provided with SGC (step by step management) programs, which are used for the management of the periodic starting of the lubricating oil pump, the critical oil pump and the smoke exhaust fan. The control logic divides the test into: sixteen steps of the test step fs_op and seven steps of the test reset step fs_sd. In the test STEP, the system sends out instructions and then carries out timing, when the timing is completed, each signal feedback condition is met, the system sends out instructions to carry out the next STEP, if the signal feedback condition is not met, the monitoring time in the STEP functional block is up, the test STEP is over, and the system directly goes to the test reset STEP; in the test reset step, after the test reset instruction is sent out, timing is started, when timing is completed, all signal conditions of the step are met, a next instruction is sent out, and if a feedback signal is not met in the step, the system reset step is interrupted. There are problems: it is unclear in which link the test is interrupted, and which condition in the interruption is not satisfied. When a problem occurs in the system, a skilled technician is required to review the historical data and combine with the control logic to analyze.
Disclosure of Invention
The invention aims at: the self-diagnosis method for the faults of the test control loop of the lubricating oil system is provided, and helps operators to judge problems timely and accurately and make measures for preventing the faults from expanding.
The technical scheme of the invention is as follows:
A lubricating oil system test control loop fault self-diagnosis method comprises the following steps:
s1, a lubricating oil system test control loop fault self-diagnosis picture: displaying an interrupt step in a first column of the picture, displaying interrupt conditions after the interrupt step, and setting an alarm reset button at the bottom of the picture;
S2, establishing a walking feedback condition which does not meet a condition memorization logic, wherein the step feedback condition comprises the following steps:
Step control logic: the trigger condition is that the control command of the STEP is activated after the command of the previous STEP is finished, when the trigger condition is 1, the CMD command is output to be 1, STEP displays the position of the STEP, T_WAIT is the shortest execution period of the waiting time of the STEP, WT is output to be 1 in the shortest period, T_MON is the monitoring time of the STEP, when the monitoring time is up, the CMD command is reset to be 0, CRIT is the passing condition of the STEP, when the WT is 1, and the feedback condition is 1, the STEP is finished, the NEXT is triggered to be 1, and the NEXT STEP command is continuously triggered;
logic fault memorization function: recording that the feedback condition is not satisfied after the step control command is activated, namely that the condition is '0': recording feedback condition "1" when WT "1", recording display "0"; recording feedback condition "0" when WT "1", recording display "1";
Test procedure fault recording: when the command CMD sends out '1', the signal needs to reset the last step when the command CMD sends out '1' in the next step; if the feedback condition of the step is not satisfied, the instruction of the next step is not triggered;
After the fault treatment is completed, an alarm reset button is pressed to clear the alarm, and the next test is carried out;
logic modification: the FS-OP instruction signal activates the walking procedure.
Specifically, the interruption step and the interruption condition data record, the interruption step includes:
FS-OP instruction signal activated walking program
The first step: checking the state of an oil system;
and a second step of: the action solenoid valve MAV21AA321 is opened;
and a third step of: solenoid valve MAV21AA321 is powered off;
Fourth step: resetting a lubricating oil pump DCO;
Fifth step: stopping the critical oil pump;
sixth step: the action solenoid valve MAV21AA329 is opened;
Seventh step: solenoid valve MAV21AA329 is de-energized and closed;
Eighth step: critical oil pump SLC reset and lubricant pump DCO reset
Ninth step: stopping the critical oil pump;
the tenth to fourteenth steps are empty steps
Fifteenth step: solenoid valve MAV21AA322 is closed;
sixteenth step; solenoid valve MAV21AA322 is closed;
seventeenth step: an empty step;
Eighteenth step: checking the state of the critical oil pump;
Nineteenth step: stopping the critical oil pump;
twenty-step: an empty step;
twenty-first step: stopping the smoke exhaust fan 1;
twenty-second step: stopping the smoke exhaust fan No. 2;
Twenty-third and twenty-fourth steps: an empty step, wherein the test step is finished;
The test reset step fs_sd is as follows:
fiftieth step: solenoid valve MAV21AA32 is closed; solenoid valve MAV21AA329 is closed;
solenoid valve MAV21AA322 is closed;
Starting a No. 1 lubricating oil pump; the No. 2 lubricating oil pump is stopped;
Fifthly, the following steps: solenoid valve MAV21AA32 is closed; solenoid valve MAV21AA329 is closed;
solenoid valve MAV21AA322 is closed;
the lubricating oil pump No. 1 is stopped; starting a No. 2 lubricating oil pump;
fiftieth step: throw lubricating oil pump DCO, lubricating oil pump resets
Fiftieth step: stopping the critical oil pump, and resetting the fault of the critical oil pump;
Fiftieth step: the critical oil pump SLC is thrown;
Fiftieth step: stopping the smoke exhaust fan 2, cutting off the smoke exhaust fan SLC, and starting the smoke exhaust fan 1;
fiftieth step: stopping the smoke exhaust fan 1, cutting off the smoke exhaust fan SLC, and starting the smoke exhaust fan 2;
Fiftieth step: and (5) ending the test.
Preferably, an alarm reset button is arranged at the bottom of a fault self-diagnosis picture of a test control loop of the lubricating oil system, the fault is the feedback condition which is not met, the fault is displayed in red, and the green is displayed when the feedback condition is met, namely the feedback condition is normal.
The invention has the advantages that:
the self-diagnosis method for the faults of the test control loop of the lubricating oil system helps operators to accurately judge the problems in time and make measures for preventing the faults from being enlarged, the fault diagnosis picture of the system test shows the step sequence number of the step interruption of the oil system, causes of faults are generated in the step, the dependence of the operators on professional technicians is reduced, meanwhile, the technical requirements of the professional technicians are reduced, the operators can be helped to accurately judge the problems in time and make measures for preventing the faults from being enlarged, the fault processing efficiency is improved, and the safety of a unit is improved.
Drawings
The invention is further described below with reference to the accompanying drawings and examples:
FIG. 1 is a diagram of a lubrication system test control loop fault self-diagnostic screen;
FIG. 2 is a condition memorization logic for an established step feedback condition not met;
FIG. 3 is a logic diagram of a first step of action instructions according to an embodiment;
FIG. 4 is a logic diagram of second through fourth step actions according to an embodiment;
FIG. 5 is a logic diagram of a fifth through seventh step of the embodiment;
FIG. 6 is a logic diagram of the eighth to fifteenth steps of the operation instruction according to the embodiment;
FIG. 7 is a logic diagram of a sixteenth through twenty-second step action instruction in an embodiment;
FIG. 8 is a logic diagram of a fifth through fifty-second step action instruction in an embodiment;
FIG. 9 is a logic diagram of a thirteenth to fifty-eighth step of the embodiment.
Detailed Description
As shown in FIG. 1, in the self-diagnosis picture of the fault of the test control loop of the lubricating oil system, which is built in the embodiment, the first column of the diagnosis picture displays the interrupt step, the interrupt condition is displayed after the step, and the alarm reset button is arranged at the bottom of the picture.
As shown in fig. 2, the condition memorization logic is established that the walk feedback condition is not satisfied:
Step control logic, trigger condition: when the trigger condition is "1", the CMD command is output as "1", STEP shows the current STEP position, t_wait is the shortest execution period of the waiting time of the current STEP, WT output is "1" within the shortest period, t_mon is the monitoring time of the current STEP, when the monitoring time is up, the CMD command is reset to "0", CRIT is the passing condition of the current STEP, when WT "1" and the feedback condition is "1", the current STEP is completed and NEXT is triggered as "1", and the NEXT STEP command is continuously triggered.
And the logic fault memorizing function records that the feedback condition is not satisfied after the step control instruction is activated, namely that the condition is 0, and the principle is shown in the table 1:
table 1 logic fault memorization function
When WT "1" is recorded with the feedback condition "1", the record is displayed as "0", and the screen is displayed green.
When WT "1" is recorded with the feedback condition "0", the recording display is "1", and the screen display is red.
Test procedure fault recording: when the command CMD of the step sends out '1', the picture displays red (fault), the signal needs to reset the previous step when the command CMD of the next step sends out '1', and the picture displays green; if the feedback condition of the step is not satisfied, the next step instruction is not triggered, and the picture displays red to indicate the interrupt step.
When the fault treatment is completed, the alarm reset button is pressed to clear the alarm, and the next test can be performed.
Logic modification: the FS-OP instruction signal activates the walking procedure.
Specifically, the interruption step in this embodiment is as follows.
The first step: command oil system status check
As shown in fig. 3, the feedback conditions are all satisfied:
1: the smoke exhaust fan is triggered only; 2: the lubricating oil pump is only contacted; 3: DCO input of a lubricating oil pump; 4: MAV21CP001OFF (pressure switch) is greater than a fixed value; 5: MAV42CP019OFF (pressure switch) is greater than a constant value; 6: SLC input of a critical oil pump; 7: the critical oil pump is stopped; 8: the DCO input of the jackshaft oil pump; 9: the rotating speed is more than 425r/min;10: the DCO of the smoke exhaust fan is put into operation; 11: the exhaust fan outlet pressure (MAV 82CP 001) is less than-5 bar;12: the two smoke exhaust fans only operate; 13: within the waiting time.
When the signal is not satisfied in the feedback condition, red is displayed on the screen.
And a second step of: command action solenoid valve MAV21AA321OPEN
As shown in fig. 4, the feedback conditions are all satisfied: 1, a step of; solenoid action MAV21AA321OPEND,2: the main oil pump 1 operates, 3: the main oil pump 2 operates, 4: critical oil pump operation, 5: the MAV20CP001ON is selected,
6: MAV42CP019OFF;7: within the waiting time.
When the signal is not satisfied in the feedback condition, displaying red on the picture
Memory logic description: according to the control logic, the electromagnetic valve MAV21AA321 is operated, the pressure switch MAV20CP001 in the oil system is used for measuring that the pipeline is opened for oil drainage, the pressure switch MAV20CP001 is operated, and the standby alternating-current oil pump and the emergency oil pump are triggered to be started in an interlocking mode.
Therefore: the MAV20CP001ON fault is displayed as red when the solenoid valve operating condition is met and the pressure switch signal is not met.
When the pressure switch condition is satisfied and the operation signals of the lubricating oil pump and the critical oil pump are not satisfied, respectively: the operation of the main oil pump 1, the operation of the main oil pump 2 and the failure of the critical oil pump are displayed in red.
And a third step of: MAV21AA321CLOSED command solenoid valve power failure
The feedback conditions are all satisfied:
1: the main oil pumps 1 and 2 are operated exclusively; 2: solenoid valve MAV21AA321 is de-energized; 3: the critical oil pump is running; 4: MAV21CP001OFF;5: MAV42CP019OFF;6: within the waiting time.
When the signal is not satisfied in the feedback condition, red is displayed on the screen.
Memory logic description: according to the control logic, the electromagnetic valve MAV21AA321 is powered off, the pressure switch MAV20CP001 in the oil system is used for measuring the oil leakage of a pipeline and closing, and the pressure switch MAV20CP001 is normal and triggers the combined stop standby alternating current oil pump.
When the solenoid valve de-energized condition is met and the pressure switch is not restored, the MAV20CP001OFF fault is shown as red.
The main oil pumps 1 and 2 are operated exclusively as failed red when the pressure switches MAV20CP001OFF and MAV42CP019OFF states are satisfied and the lubrication oil pump does not show exclusive operation.
Fourth step: command lubrication pump DCO reset
The feedback conditions are all satisfied:
1: the lubrication pump DCO has no failure; 2: the critical oil pump has no fault;
3, the lubricating oil pump has no fault; 4: within the waiting time.
When the signal is not satisfied in the feedback condition, red is displayed on the screen.
Fifth step: command stop critical oil pump
As shown in fig. 5, the feedback conditions are all satisfied:
1: MAV21CP001OFF;2: MAV42CP019OFF;3: the lubricating oil pump has one operation
4: The critical oil pump is stopped; 5: within the waiting time.
When the signal is not satisfied in the feedback condition, red is displayed on the screen.
Memory logic description: according to the control logic, the pressure switch MAV20CP001 in the oil system measures that the pipeline is closed when the oil is drained, and the pressure switch MAV20CP001 is recovered to be normal.
Therefore: the critical oil pump down fault is indicated as red when the pressure switches MAV20CP001OFF and MAV42CP019OFF conditions are met and the critical oil pump down signal is not met.
Sixth step: command action solenoid valve MAV21AA329OPEN
The feedback conditions are all satisfied:
1：MAV21AA329OPEND；2：MAV42CP019ON；3：MAV21CP001OFF；
4: MAV42CP016 (lubricating oil manifold pressure average) > 1.7bar;5: the lubricating oil pumps No. 1 and No. 2 operate; 6: critical oil pump operation; 7: within the waiting time.
When the signal is not satisfied in the feedback condition, red is displayed on the screen.
Memory logic description: according to the control logic, the electromagnetic valve MAV21AA329 operates, the pressure switch MAV42CP019 in the oil system measures that the pipeline is opened for oil drainage, and the pressure switch MAV42CP019 operates to trigger the interlocking to start the standby alternating-current oil pump and the emergency oil pump.
Therefore: when the solenoid valve operating condition is met and the pressure switch is not met, MAV42CP019ON shows the fault as red.
When the pressure switch condition is satisfied and the operation of the lubricating oil pump and the critical oil pump is not satisfied: and the lubricating oil pumps No. 1 and No. 2 are operated, and the critical oil pump is operated to display that the fault is red.
Seventh step: commanding the solenoid valve MAV21AA329CLOSE;
The feedback conditions are all satisfied:
1: the only lubricating oil pump operates; 2: MAV21AA329CLOSED;
3: MAV42CP019OFF;4: critical oil pump operation; 5: MAV21CP001OFF;
6: within the waiting time.
When the signal is not satisfied in the feedback condition, red is displayed on the screen.
Memory logic description: according to the control logic, the electromagnetic valve MAV21AA329 is powered off, the pressure switch MAV42CP019 in the oil system measures that the pipeline is closed, and the pressure switch MAV42CP019 is recovered to be normal.
Therefore: when the solenoid valve de-energized condition is met and the pressure switch is not met, MAV42CP019OFF indicates that the fault is red.
When the pressure switch MAV42CP019OFF and MAV21CP001OFF states are met and the lubricant pump only operation is not met: the only lubrication pump operation shows a failure in red.
Eighth step: command critical oil pump SLC reset and lubricant pump DCO reset
As shown in fig. 6, the feedback conditions are all satisfied:
1: the lubricating oil pump DCO has no fault; 2: the critical oil pump has no fault; 3: within the waiting time.
When the signal is not satisfied in the feedback condition, red is displayed on the screen.
Ninth step: command stop critical oil pump
The feedback conditions are all satisfied:
1: a lubricating oil pump operates; 2: the critical oil pump is stopped; 3: MAV21CP001OFF;
4: MAV42CP019OFF;5: within the waiting time.
When the signal is not satisfied in the feedback condition, red is displayed on the screen.
Memory logic description: according to the control logic, the pressure switch MAV42CP019 in the oil system measures the closing of the oil drain, and the pressure switch MAV42CP019 is recovered to be normal.
Therefore: when the pressure switch MAV42CP019OFF and MAV21CP001OFF states are met and the critical oil pump down is not met, the critical oil pump down fault is displayed as red.
The tenth to fourteenth steps are empty steps
Fifteenth step: command solenoid valve MAV21AA322OPEN
The feedback conditions are all satisfied:
1:1\2 lubricating oil pumps are all operated; 2: MAV21AA322OPEND;3: MAV24CP001ON;
4: critical oil pump operation; 5: within the waiting time.
When the signal is not satisfied in the feedback condition, red is displayed on the screen.
Memory logic description: according to the control logic, the electromagnetic valve MAV21AA322 is operated, the pressure switch MAV24CP001 in the oil system is used for measuring that the pipeline is opened for oil drainage, the pressure switch MAV24CP001 is operated, and the standby alternating-current oil pump and the emergency oil pump are started in a triggering and interlocking mode.
Therefore: when the action condition of the electromagnetic valve MAV21AA322 is met and the pressure switch is not met, the MAV24CP001ON displays that the fault is red;
when the pressure switch MAV24CP001 condition is satisfied and the operation of the lubricating oil pump and the critical oil pump is not satisfied; 1\2 the lubricating oil pumps are all operated, and the critical oil pump operation shows that the fault is red.
Sixteenth step: command switch solenoid MAV21AA322CLOSE
As shown in fig. 7, the feedback conditions are all satisfied:
1: the only lubricating oil pump operates; 2: MAV21AA322CLOSED;
3: MAV24CP001OFF;4: within the waiting time.
When the signal is not satisfied in the feedback condition, red is displayed on the screen.
Memory logic description: according to the control logic, the electromagnetic valve MAV21AA322 is powered OFF, the pressure switch MAV241CP001OFF measuring pipeline of the oil system is closed to drain oil, and the pressure switch MAV241CP001 is restored to be normal.
Therefore: when the solenoid valve MAV21AA322 power-off condition is satisfied and the pressure switch is not satisfied: MAV241CP001OFF shows the fault as red;
when the pressure switch MAV241CP001 condition OFF state is met and the lube pump only operation is not met: the only operation of the lubricant pump shows a red color.
Seventeenth step of the blank step
Eighteenth step: command checking critical oil pump status
The feedback conditions are all satisfied:
1: the critical oil pump has no fault; 2: within the waiting time.
When the signal is not satisfied in the feedback condition, red is displayed on the screen.
Nineteenth step: command stop critical oil pump
The feedback conditions are all satisfied:
1: a lubricating oil pump operates; 2: the critical oil pump is stopped;
3: MAV21CP001OFF;4: within the waiting time.
When the signal is not satisfied in the feedback condition, red is displayed on the screen.
Memory logic description: according to the control logic, the pressure switch is restored to normal, i.e. MAV21CP001OFF.
Therefore: when the condition OFF state of the pressure switch MAV21CP001 is satisfied and the lubricant pump has an operating signal and the critical pump down is not satisfied: the operation of one lubricating oil pump and the shutdown of the critical oil pump show that the fault is red.
Twenty-step: empty.
Twenty-first step: the smoke exhaust fan No. 1 is instructed to stop,
The feedback conditions are all satisfied:
1: stopping the smoke exhaust fan 1; 2: the No. 2 smoke exhaust fan operates;
3: MAV82CP001OFF;4: within the waiting time.
When the signal is not satisfied in the feedback condition, red is displayed on the screen.
Memory logic description: the control logic belongs to pump interlocking, and the hard interlocking between the electrical equipment, namely after one pump is stopped, the stop signal is used as a starting signal for starting the standby pump, and the signals are connected with the two pump local control boxes. The pressure signal starts the standby pump, which belongs to the pressure self-starting, so the outlet pressure of the smoke exhaust fan, i.e. MAV82CP001OFF, is normal.
Therefore: when the exhaust fan outlet pressure is in the MAV82CP001OFF state, and the No. 1 exhaust fan outage does not meet: the No. 1 smoke exhaust fan stops displaying the fault as red.
Twenty-second step: instruction No. 2 smoke exhaust fan stop
The feedback conditions are all satisfied:
1: stopping the smoke exhaust fan No. 2; 2: the smoke exhaust fan 1 runs;
3: MAV82CP001OFF;4: within the waiting time.
When the signal is not satisfied in the feedback condition, red is displayed on the screen.
Memory logic description: the control logic belongs to pump interlocking, and the hard interlocking between the electrical equipment, namely after one pump is stopped, the stop signal is used as a starting signal for starting the standby pump, and the signals are connected with the two pump local control boxes. The pressure signal starts the standby pump, which belongs to the pressure self-starting, so the outlet pressure of the smoke exhaust fan, i.e. MAV82CP001OFF, is normal.
Therefore: when the outlet pressure of the smoke exhaust fan is in the MAV82CP001OFF state, the shutdown of the No. 2 smoke exhaust fan is not satisfied: and the stop of the No. 2 smoke exhaust fan shows that the fault is red.
Twenty-third and twenty-fourth steps: and (5) an empty step, and ending the test step.
The test reset step fs_sd is started below.
Fiftieth step: instruction MAV21AA321 CLOSE, MAV21AA329 CLOSE,
MAV21AA322 CLOSE, lubricant pump number 1 is started and lubricant pump number 2 is stopped.
As shown in fig. 8, the feedback conditions are all satisfied:
1：MAV21AA321CLOSED；2：MAV21AA329CLOSED；
3：MAV21AA322CLOSED；4：MAV21CP001OFF；
5: MAV42CP019OFF;6: the lubricating oil pump No. 1 operates;
7: the No. 2 lubricating oil pump is stopped; 8: monitoring time;
When the signal is not satisfied in the feedback condition, red is displayed on the screen.
Memory logic description: according to the control logic, the lubricant pump 2 can only be stopped when the lubricant pump 1 is operated, and no low-pressure interlock starting signal exists.
Therefore: when the pressure switches MAV21CP001OFF and MAV42CP019OFF are satisfied and the lubricant pump 1 is operated and the lubricant pump No. 2 is shut down, it is not satisfied: and the No. 2 lubricating oil pump is stopped to display that the fault is red.
Fifthly, the following steps: the instructions MAV21AA321 CLOSE, MAV21AA329 CLOSE, MAV21AA322 CLOSE, no. 1 lubricant pump stop, no. 2 lubricant pump start,
The feedback conditions are all satisfied:
1：MAV21AA321CLOSED；2：MAV21AA329CLOSED；
3：MAV21AA322CLOSED；4：MAV21CP001OFF；
5: MAV42CP019OFF;6: the lubricating oil pump No. 1 is stopped;
7: the No. 2 lubricating oil pump operates; 8: within the monitoring time.
When the signal is not satisfied in the feedback condition, red is displayed on the screen.
Memory logic description: according to the control logic, the lubricant pump 1 can be stopped when the lubricant pump 2 is operated. And there is no pressure low interlock activation signal.
Therefore: when the pressure switches MAV21CP001OFF and MAV42CP019OFF meet the operation of the lubricant pump 2 and the No.1 lubricant pump is shut down and not met: and the failure of the No.1 lubricating oil pump is displayed as red.
Fiftieth step: command to throw lubricant pump DCO, lubricant pump reset
As shown in fig. 9, the feedback conditions are all satisfied:
1: DCO input of a lubricating oil pump; 2: resetting the lubricating oil pump has no fault; 3: within the monitoring time.
When the signal is not satisfied in the feedback condition, red is displayed on the screen.
Fiftieth step: command to stop critical oil pump, fault reset of critical oil pump
The feedback conditions are all satisfied:
1: the critical oil pump is stopped; 2: the critical oil pump has no fault; 3: within the monitoring time.
When the signal is not satisfied in the feedback condition, red is displayed on the screen.
Fiftieth step: command to throw critical oil pump SLC
The feedback conditions are all satisfied:
1: the critical oil pump is stopped; 2: SLC input of a critical oil pump; 3: within the monitoring time.
When the signal is not satisfied in the feedback condition, red is displayed on the screen.
Fiftieth step: the instruction stops the smoke exhaust fan 2 to cut off the SLC of the smoke exhaust fan and starts the smoke exhaust fan 1
The feedback conditions are all satisfied:
1: the smoke exhaust fan 1 operates; 2: the smoke exhaust fan 2 is stopped; 3: MAV82CP001 > -5bar
4: The exhaust fan SLC has no fault; 5: within the monitoring time.
When the signal is not satisfied in the feedback condition, red is displayed on the screen.
Memory logic description: according to the control logic, the exhaust fan outlet pressure, i.e. MAV82CP001ON, is the condition for interlocking the starting of the standby exhaust fan, while the operation state of the exhaust fan 1 is the necessary condition for the allowable stopping of the exhaust fan 2.
Therefore: when the outlet pressure of the smoke exhaust fan is in the MAV82CP001OFF state, and the smoke exhaust fan 1 is operated while the No. 2 smoke exhaust fan is stopped, the operation is not satisfied: and the shutdown of the No. 2 smoke exhaust fan shows that the fault is red.
Fiftieth step: the smoke exhaust fan 1 is instructed to stop, the smoke exhaust fan SLC is cut off, and the smoke exhaust fan 2 is started
The feedback conditions are all satisfied:
1: the smoke exhaust fan 2 operates; 2: the smoke exhaust fan 1 is stopped; 3: MAV82CP001 > -5bar;4: the exhaust fan SLC has no fault; 5: within the monitoring time.
When the signal is not satisfied in the feedback condition, red is displayed on the screen.
Memory logic description: according to the control logic, the exhaust fan outlet pressure, i.e. MAV82CP001ON, is the condition for interlocking the starting of the standby exhaust fan, while the operation state of the exhaust fan 2 is the necessary condition for the allowable stopping of the exhaust fan 1.
Therefore: when the exhaust fan outlet pressure is in the MAV82CP001OFF state, and the exhaust fan 2 is operated while the No. 1 exhaust fan is stopped, the operation is not satisfied: and the shutdown of the No. 1 smoke exhaust fan shows that the fault is red.
The fifty-eighth test was ended.
The above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the content of the present invention and implement the same according to the content of the present invention, and are not intended to limit the scope of the present invention. All modifications made according to the spirit of the main technical proposal of the invention should be covered in the protection scope of the invention.

Claims (2)

1. The self-diagnosis method for the faults of the test control loop of the lubricating oil system is characterized by comprising the following steps of:
s1, a lubricating oil system test control loop fault self-diagnosis picture: displaying an interrupt step in a first column of the picture, displaying interrupt conditions after the interrupt step, and setting an alarm reset button at the bottom of the picture;
S2, establishing a walking feedback condition which does not meet a condition memorization logic, wherein the step feedback condition comprises the following steps:
Step control logic: the trigger condition is that the control command of the STEP is activated after the command of the previous STEP is finished, when the trigger condition is 1, the CMD command is output to be 1, STEP displays the position of the STEP, T_WAIT is the shortest execution period of the waiting time of the STEP, WT is output to be 1 in the shortest period, T_MON is the monitoring time of the STEP, when the monitoring time is up, the CMD command is reset to be 0, CRIT is the passing condition of the STEP, when the WT is output to be 1, and the feedback condition is 1, the STEP is finished and the NEXT is triggered to be 1, and the NEXT STEP command is continuously triggered;
Logic fault memorization function: recording that the feedback condition is not satisfied after the step control command is activated, namely that the condition is '0': recording feedback condition "1" when WT output is "1", recording display "0"; recording feedback condition of "0" when WT output is "1", recording display is "1";
Test procedure fault recording: when the command CMD sends out '1', the signal of the command CMD of the step sends out '1' needs to reset the previous step when the command CMD of the next step sends out '1'; if the feedback condition of the step is not satisfied, the instruction of the next step is not triggered;
After the fault treatment is completed, an alarm reset button is pressed to clear the alarm, and the next test is carried out;
Logic modification: the FS-OP instruction signal activates the walking program;
An interruption step and an interruption condition data record, wherein the interruption step comprises the following steps:
The FS-OP instruction signal activates the walking program;
The first step: checking the state of an oil system;
and a second step of: the action solenoid valve MAV21AA321 is opened;
and a third step of: solenoid valve MAV21AA321 is powered off;
Fourth step: resetting a lubricating oil pump DCO;
Fifth step: stopping the critical oil pump;
sixth step: the action solenoid valve MAV21AA329 is opened;
Seventh step: solenoid valve MAV21AA329 is de-energized and closed;
eighth step: critical oil pump SLC reset and lubricant pump DCO reset;
Ninth step: stopping the critical oil pump;
The tenth step to the fourteenth step are empty steps;
fifteenth step: solenoid valve MAV21AA322 is open;
sixteenth step; solenoid valve MAV21AA322 is closed;
seventeenth step: an empty step;
Eighteenth step: checking the state of the critical oil pump;
Nineteenth step: stopping the critical oil pump;
twenty-step: an empty step;
twenty-first step: stopping the smoke exhaust fan 1;
twenty-second step: stopping the smoke exhaust fan No. 2;
Twenty-third and twenty-fourth steps: an empty step, wherein the test step is finished;
The test reset step fs_sd is as follows:
Twenty-fifth step: solenoid valve MAV21AA32 is closed; solenoid valve MAV21AA329 is closed;
solenoid valve MAV21AA322 is closed;
Starting a No. 1 lubricating oil pump; the No. 2 lubricating oil pump is stopped;
Twenty-sixth step: solenoid valve MAV21AA32 is closed; solenoid valve MAV21AA329 is closed;
solenoid valve MAV21AA322 is closed;
the lubricating oil pump No. 1 is stopped; starting a No. 2 lubricating oil pump;
twenty-seventh step: feeding a lubricating oil pump DCO, and resetting the lubricating oil pump;
Twenty eighth step: stopping the critical oil pump, and resetting the fault of the critical oil pump;
Twenty-ninth step: the critical oil pump SLC is thrown;
Thirty-step: stopping the No. 2 smoke exhaust fan to cut off the SLC smoke exhaust fan, and starting the No. 1 smoke exhaust fan;
thirty-first step: stopping the No. 1 smoke exhaust fan to cut off the SLC smoke exhaust fan, and starting the No. 2 smoke exhaust fan;
Thirty-second step: and (5) ending the test.
2. The method for self-diagnosing faults of a lubricating oil system test control loop according to claim 1, wherein an alarm reset button is arranged at the bottom of a self-diagnosing picture of faults of the lubricating oil system test control loop, feedback conditions are not met, namely faults occur, the faults are red, and feedback conditions are green when the feedback conditions are met, namely the faults are normal.
CN202211199298.4A 2022-09-29 2022-09-29 Lubricating oil system test control loop fault self-diagnosis method Active CN115507283B (en)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59120554A (en) * 1982-12-27 1984-07-12 Shin Meiwa Ind Co Ltd Automatic grease feed device for machine with dump mechanism
CN101649757A (en) * 2009-04-02 2010-02-17 山东中实易通集团有限公司 Start-stop monitoring system of steam turbine generator unit
CN101967997A (en) * 2010-10-19 2011-02-09 国电南京自动化股份有限公司 Method for recording incident for overspeed protection of steam turbine
CN202048339U (en) * 2011-04-21 2011-11-23 宝山钢铁股份有限公司 Automatic lubricating pressure control device
CN109237287A (en) * 2018-11-09 2019-01-18 四川川润液压润滑设备有限公司 A kind of method that lubricating oil system failure of pump determines and standby usage pump automatically switches
CN109340549A (en) * 2018-08-24 2019-02-15 四川川润液压润滑设备有限公司 A kind of control method that lubricating system oil pump fault judges automatically and switches

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59120554A (en) * 1982-12-27 1984-07-12 Shin Meiwa Ind Co Ltd Automatic grease feed device for machine with dump mechanism
CN101649757A (en) * 2009-04-02 2010-02-17 山东中实易通集团有限公司 Start-stop monitoring system of steam turbine generator unit
CN101967997A (en) * 2010-10-19 2011-02-09 国电南京自动化股份有限公司 Method for recording incident for overspeed protection of steam turbine
CN202048339U (en) * 2011-04-21 2011-11-23 宝山钢铁股份有限公司 Automatic lubricating pressure control device
CN109340549A (en) * 2018-08-24 2019-02-15 四川川润液压润滑设备有限公司 A kind of control method that lubricating system oil pump fault judges automatically and switches
CN109237287A (en) * 2018-11-09 2019-01-18 四川川润液压润滑设备有限公司 A kind of method that lubricating oil system failure of pump determines and standby usage pump automatically switches

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