CN110486609A - A kind of shafting oil pump motor frequency conversion automatic control device and control method - Google Patents
A kind of shafting oil pump motor frequency conversion automatic control device and control method Download PDFInfo
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- CN110486609A CN110486609A CN201910710071.3A CN201910710071A CN110486609A CN 110486609 A CN110486609 A CN 110486609A CN 201910710071 A CN201910710071 A CN 201910710071A CN 110486609 A CN110486609 A CN 110486609A
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- oil pump
- signal
- controller
- control
- pump motor
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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
- F16N13/00—Lubricating-pumps
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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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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P25/00—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details
- H02P25/16—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the circuit arrangement or by the kind of wiring
- H02P25/18—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the circuit arrangement or by the kind of wiring with arrangements for switching the windings, e.g. with mechanical switches or relays
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P27/00—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
- H02P27/04—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P5/00—Arrangements specially adapted for regulating or controlling the speed or torque of two or more electric motors
- H02P5/46—Arrangements specially adapted for regulating or controlling the speed or torque of two or more electric motors for speed regulation of two or more dynamo-electric motors in relation to one another
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16N—LUBRICATING
- F16N2210/00—Applications
- F16N2210/06—Marine
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16N—LUBRICATING
- F16N2210/00—Applications
- F16N2210/18—Electric motors
-
- 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
- F16N2250/00—Measuring
- F16N2250/04—Pressure
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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
- F16N2250/00—Measuring
- F16N2250/18—Level
-
- 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
- F16N2250/00—Measuring
- F16N2250/40—Flow
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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
- F16N2270/00—Controlling
- F16N2270/20—Amount of lubricant
Abstract
The present invention provides a kind of shafting oil pump motor frequency conversion automatic control device and control methods, including sensor, controller, frequency converter and contactor；On the basis of automatically controlling two oil pump motor operations, the function of adjusting flow with the control frequency conversion output of shafting revolving speed is realized, for the user demand according to different operating condition oil systems, provides the Precise control requirement of lubricating oil on demand；Have lube pipe flow monitoring, fault alarm function and manual-operated emergent operating function, in frequency converter failure by power grid input power directly as oil pump motor power, oil system failure is avoided to cause oil pipe flow out of control, convenient for reminding maintenance personnel to repair in time, further lifting means use reliability.
Description
Technical field
The invention belongs to naval vessel technical field of electromechanical control, and in particular to a kind of shafting oil pump motor frequency conversion automatic control
Device and control method.
Background technique
Driving power of ship during navigation from propulsion electric machine via shafting structure drive propeller rotation from
And thrust power is generated, and propulsion electric machine and shafting etc. need to lubricate and radiate during operation, shafting oil system utilizes
Oil pump is that propulsion electric machine and shafting etc. provide required lubricating oil by lube pipe.Different rotating speeds item during ship's navigation
Under part, there is some difference for demand of the shafting to lubricating oil: under the conditions of higher rotation speed, the lubricating oil of high flow being needed to supply；
Under lower speed conditions, the lubricating oil of the relatively low flow of demand is supplied.Existing oil pump motor control assembly is from AC network
After taking electricity, out-put supply quality is consistent with power grid, and output voltage and frequency remain unchanged, and it is defeated that oil pump only has one grade of flow
Out, it is unable to satisfy oil system minute design use demand；And it can not auto-changeover control between more lubricating oil pump motors.
Summary of the invention
The technical problem to be solved by the present invention is providing a kind of shafting oil pump motor frequency conversion automatic control device and control
Method, auto-changeover control and and frequency conversion flow adjusting for realizing two lubricating oil pump motors.
The technical solution taken by the invention to solve the above technical problem are as follows: a kind of shafting oil pump motor frequency conversion is automatic
Control device, including controller, frequency converter and contactor；The signal input part of the controller letter with host computer and sensor respectively
Number output end connection, for receiving the signal and calculating that host computer and sensor are sent；The coil of contactor and the letter of controller
The connection of number output end, the on-off of the contact of the order control contactor for receiving controller；The signal input part of frequency converter with
The signal output end of controller connects, and the power input of frequency converter is connect by the contact of one group of contactor with power supply,
The power output end of frequency converter is connected by the contact of another group of contactor and the power input of electrical equipment, for receiving control
The order of device transmission processed, power supply and the output that power supply is converted into electrical equipment needs.
According to the above scheme, further include sensor, sensor include flow sensor, speed probe, differential pressure pickup and
Liquid level sensor；Flow sensor is arranged in lube pipe for monitoring piping flow；Speed probe is arranged in shafting knot
For monitoring the revolving speed of shafting structure on structure；The import and export of lube pipe is arranged in for monitoring lubricant filtering device in differential pressure pickup
Inlet outlet pressure differential；Liquid level sensor is arranged in fuel tank for monitoring the liquid level of fuel tank.
It according to the above scheme, further include control input unit and acousto-optic warning indicator；Controlling input unit includes button
And knob, the signal input part of the signal output end and controller that control input unit connect, for sending user to controller
The order of input；Acoustic-optic alarm includes indicator light and buzzer, the signal input part of acoustic-optic alarm and controller
Signal output end connection, for receiving the alarm signal of controller transmission and being alarmed with acoustooptic form.
Further, further include backup contactor, back up the coil of contactor and the signal output end of control input unit
Connection, the contact for backing up contactor are connected between power supply end and the power input of electrical equipment, for passing through control
Input unit receives the on-off of the contact of the contactor of the operation control backup of user.
It according to the above scheme, further include filter, filters in series is used between the contactor and frequency converter of power supply end
In the interference for filtering out power supply output, the power quality for being output to frequency converter is improved；It further include breaker, breaker is connected on
Between the contactor and power supply of power supply end, the on-off of the output for controlling power supply.
A kind of shafting oil pump motor frequency conversion autocontrol method, comprising the following steps:
Step S1: the device of the invention and power supply, electrical equipment and sensor are connected, selected after power-up initializing
Automatic control mode is selected, controller controls corresponding electrical equipment according to the host computer signal received and runs；
Step S2: controller receiving sensor signal and the electric voltage frequency for controlling frequency converter output；
Step S3: controller receiving sensor signal simultaneously judges whether to meet setting value requirement, then follow the steps if normal
S2 alarms if abnormal and executes further operating；
Step S4: maintenance personnel manually controls electrical equipment and overhauls to failure electrical equipment.
Further, in the step S2, specific steps are as follows:
Step S21: the tach signal for the shafting structure that controller real-time reception speed probe is sent；
Step S22: controller calculates corresponding with the matched lubricating oil pump discharge of shafting structure according to the signal that step S21 is obtained
Voltage-frequency signal, and be sent to frequency converter；
Step S23: frequency converter receives power supply by contactor, the signal control output electricity obtained according to step S22
The frequency in source, and power supply is output to control the flow of oil pump by lubricating oil pump motor by contactor.
Further, in the step S3, specific steps are as follows:
Step S31: the differential pressure signal for the lubricant filtering device inlet and outlet that controller real-time reception differential pressure pickup is sent simultaneously is sentenced
The size of disconnected pressure difference value, if pressure difference is greater than the set value, acoustic-optic alarm issues sound and light alarm signal；If pressure difference is less than
Equal to setting value, sound and light alarm signal stops；
Step S32: the height that controller real-time reception liquid level sensor is sent sets the liquid level signal of fuel tank and judges liquid level
Just, if liquid level is lower than setting value, acoustic-optic alarm issues sound and light alarm signal；If liquid level is optionally greater than setting value, acousto-optic
Alarm signal stops；
Step S33: the flow signal for the lube pipe that controller real-time reception flow sensor is sent simultaneously judges flow value
Size, if flow value is in normal range (NR), currently running lubricating oil pump motor is worked normally, no sound and light alarm signal, from step
Rapid S2 circulation；If flow value is in low discharge range, acoustic-optic alarm issues sound and light alarm signal, controller control contactor
The power circuit for disconnecting current lubricating oil pump motor is connected to the power circuit of another lubricating oil pump motor, recycles from step S31；If stream
Magnitude is in ultra-low quantity of flow range, and acoustic-optic alarm issues sound and light alarm signal, and controller control contactor disconnects all cunnings
The power circuit of Oil pump electrical machinery.
Further, in the step S4, specific steps are as follows:
Step S41: MANUAL CONTROL mode is selected by control input unit；
Step S42: main lubricating oil pump motor is run by control input unit selection, while spare lubricating oil pump motor stops fortune
Row；Or spare lubricating oil pump motor is run by control input unit selection, while main lubricating oil pump motor is out of service；Pass through control
Input unit keeps all lubricating oil pump motors out of service；
Step S43: oil pump is made to export high flow capacity or low discharge by controlling input unit；
Step S44: sound and light alarm signal is eliminated by control input unit after troubleshooting.
Further, further comprising the steps of: to send fault-signal, sound-light alarm to controller when frequency converter breaks down
Device issues sound and light alarm signal, manual switching contingency mode, and controller controls concatenated contactor on frequency converter transmission of electricity access
Break contact, while control is connected on the backup contactor closure contact of control input unit, lubricating oil pump motor is by automatically controlling
Mode switchs to MANUAL CONTROL mode；It executes step S42 and step S43 and guarantees that device operates normally；Pass through control after troubleshooting
Input unit eliminates sound and light alarm signal.
The invention has the benefit that
1. a kind of shafting oil pump motor frequency conversion automatic control device of the invention and control method are automatically controlling two
On the basis of oil pump motor operation, the function that flow is adjusted with the control frequency conversion output of shafting revolving speed is realized, for according to not
With the user demand of operating condition oil system, the Precise control requirement of lubricating oil is provided on demand.
2. the present invention has lube pipe flow monitoring and fault alarm function and manual-operated emergent operating function, avoid
Oil system failure causes oil pipe flow out of control, convenient for reminding maintenance personnel to repair in time.
3 present invention effectively reduce the mean power of oil pump motor operation, improve the service efficiency of oil system, into
And the energy consumption and noise of oil system operation are reduced, have the beneficial effect of energy-saving and noise-reducing.
Detailed description of the invention
Fig. 1 is the functional block diagram of the embodiment of the present invention.
Fig. 2 is the outline drawing of the embodiment of the present invention.
Fig. 3 is the MANUAL CONTROL mode circuit diagram of the embodiment of the present invention.
Fig. 4 is the frequency conversion output services schematic diagram of mechanism of the embodiment of the present invention.
In figure: 1. low discharge alarm lamps；2. ultra-low quantity of flow alarm lamp；3. filter blocks alarm lamp；4. height sets oil tank liquid level
Low alarm lamp；5. frequency converter failure alarm lamp；No. 6.1 power supply indicators；No. 7.1 pump operation indicator lights；No. 8.1 failure of pump lamps；
No. 9.2 power supply indicators；No. 10.2 pump operation indicator lights；No. 11.2 failure of pump lamps；12.1 number pump start button；No. 13.2 pumps open
Dynamic button；14. lubricating oil pump motor stop button；15. trying button；16. mute button；17. frequency converter failure reset button；
18. emergency button；19. operating mode and flow select knob；20. nameplate.
Specific embodiment
The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
Referring to Fig. 1 to Fig. 3, a kind of shafting oil pump motor frequency conversion automatic control device of the invention, including controller, biography
Sensor, frequency converter, contactor, control input unit, sound-light alarm instruction device, filter and breaker.
Controller is PLC programmable controller, and the signal input part of controller communicates electricity with propulsion electric machine master control borad respectively
Cable is connected with the signal output end of sensor, for receiving the signal of propulsion electric machine master control borad communication cable and sensor transmission simultaneously
Calculate and carry out logic judgment.
Sensor includes flow sensor, speed probe, differential pressure pickup and liquid level sensor；Flow sensor setting
For monitoring piping flow in lube pipe；Speed probe is arranged on shafting structure for monitoring turning for shafting structure
Speed；The import and export that lube pipe is arranged in differential pressure pickup is used to monitor the inlet outlet pressure differential of lubricant filtering device；Liquid level sensor
High set in fuel tank for monitoring the liquid level of fuel tank is set.
Contactor has multiple, the signal output end connection of the coil and controller of part contactor, for receiving controller
Order control contactor contact on-off；The signal input part of frequency converter and the signal output end of controller connect, frequency conversion
The power input of device is connect by the contact of one group of contactor with power supply, and the power output end of frequency converter passes through another group
The contact of contactor is connect with the power input of lubricating oil pump motor, for receiving the order of controller transmission, by power supply
It is converted into the power supply of lubricating oil pump motor needs and output.
Control input unit include 12, No. 2 pump start buttons 13 of No. 1 pump start button, lubricating oil pump motor stop button 14,
It tries button 15, mute button 16, frequency converter failure reset button 17, emergency button 18 and operating mode and flow selects knob
19, the signal input part of the signal output end and controller that control input unit connects, for sending user's input to controller
Operational order.Wherein No. 1 pump start button 12 and No. 2 pump start button 13 realizes main lubricating oil pump motor and spare lubricating oil jointly
The start-up and shut-down control interlock function of pump motor, SS2, SS4 shown in Fig. 3 are respectively No. 1 pump start button 12 and No. 2 pump start button
13, after pressing SS2, the coil of contactor 1K1 is connected to, and corresponding contact 1 is connected to 2, and No. 1 pump is that main lubricating oil pump motor powers on,
No. 2 pumps are that the control circuit of spare lubricating oil pump motor is in off state simultaneously；Similarly, No. 2 i.e. spare lubricating oil of pump after SS4 are pressed
Pump motor powers on, and No. 1 pump is that the control circuit of main lubricating oil pump motor is in off state.
Acoustic-optic alarm includes low discharge alarm lamp 1, ultra-low quantity of flow alarm lamp 2, filter blocks alarm lamp 3, height sets oil
The low alarm lamp 4 of case liquid level, 7, No. 1 failure of pump lamps of pump operation indicator light of power supply indicator 6,1 of frequency converter failure alarm lamp 5,1
8, No. 2 power supply indicators 9,2 pump operation indicator light 10,2 failure of pump lamp 11 and buzzers, the signal of acoustic-optic alarm are defeated
The signal output end for entering end and controller connects, for receiving the alarm signal of controller transmission and being alarmed with acoustooptic form.Portion
Tap tentaculum is backup contactor, and the coil for backing up contactor is connect with the signal output end of control input unit, backup contact
The contact of device is connected between power supply end and the power input of lubricating oil pump motor, for being received by control input unit
The on-off of the contact of the contactor of the operation control backup of user.
Filters in series is between the contactor and frequency converter of power supply end, for filtering out the dry of power supply output
It disturbs, improves the power quality for being output to frequency converter；Breaker is connected between the contactor of power supply end and power supply, is used
In the on-off of the output of control power supply.
Referring to fig. 4, a kind of shafting oil pump motor frequency conversion autocontrol method, comprising the following steps:
Step S1: the device of the embodiment of the present invention is exchanged to 380V power supply, two lubricating oil pump motors, flows with two-way
Sensor, liquid level sensor, differential pressure pickup, extension alarm and propulsion electric machine master control borad communication cable connect；Open power supply
Switch, it is controller, sensor and acousto-optic report that input 380V AC power source, which is converted into 24V DC power supply through AC/DC converting means,
Alarm device power supply, No. 1 power supply indicator 6 and No. 2 power supply indicator 9 are bright；Examination button 15 is pressed, is referred to if all indicator lights are bright
Show that lamp is normal, press examination button 15 again, except remaining lamp of No. 1 power supply indicator 6 and No. 2 power supply indicator 9 extinguishes；If referring to
Show that the light on and off of lamp are undesirable, indicate lamp failure, needs maintenance personnel's troubleshooting and maintenance；Rotary work mode after the completion of examination lamp
And flow selection knob 19 presses start-stop button, into automatic control mode, controller is pushed away according to what is received to " automatic " gear
High and low shelves instruction output relevant voltage into motor master control borad controls lubricating oil pump operation, the corresponding bright expression of pump operation indicator light
Current lubricating oil pump motor brings into operation.
Step S2: the electricity that the tach signal control frequency converter for the shafting structure that controller is sent according to speed probe exports
Voltage-frequency rate:
Step S21: the tach signal for the shafting structure that controller real-time reception speed probe is sent；
Step S22: controller calculates and the matched lubricating oil pump discharge of shafting structure according to the tach signal that step S21 is obtained
Corresponding voltage-frequency signal, and it is sent to frequency converter；
Step S23: frequency converter receives power supply by contactor, the signal control output electricity obtained according to step S22
The frequency in source, and power supply is output to control the flow of oil pump by lubricating oil pump motor by contactor.
Step S3: signal that controller real-time reception differential pressure pickup, liquid level sensor and flow sensor are sent simultaneously is sentenced
It is disconnected whether to meet setting value requirement, S2 is thened follow the steps if normal, is alarmed if abnormal and is executed further operating；
Step S31: the differential pressure signal for the lubricant filtering device inlet and outlet that controller real-time reception differential pressure pickup is sent simultaneously is sentenced
The size of disconnected pressure difference value, if pressure difference is greater than 0.1MPa, filter blocking alarm lamp 3 is bright and issues alarm；If pressure difference is small
In being equal to 0.1MPa, filter blocking alarm lamp 3 goes out, and alarm stops；
Step S32: the height that controller real-time reception liquid level sensor is sent sets the liquid level signal of fuel tank and judges liquid level
Just, if liquid level is lower than setting value, it is bright and issue alarm that height sets the low alarm lamp 4 of oil tank liquid level；If liquid level is optionally greater than setting
Value, height set the low alarm lamp 4 of oil tank liquid level and go out, and alarm stops；
Step S33: the flow signal for the lube pipe that controller real-time reception flow sensor is sent simultaneously judges flow value
Size, if flow value is in normal range (NR) Zone0, currently running lubricating oil pump motor is worked normally, 1 He of low discharge alarm lamp
Ultra-low quantity of flow alarm lamp 2 goes out, alarm free sound, recycles from step S2；If flow value is in low discharge range Zone1, low discharge report
Warning lamp 1 is bright and issues alarm, and controller control contactor disconnects the power circuit of main lubricating oil pump motor, current lubricating oil pump motor
Corresponding pump operation indicator light and low discharge alarm lamp 1 go out, and corresponding failure of pump lamp is bright, are connected to the power supply of spare lubricating oil pump motor
Circuit, the corresponding pump operation indicator light of spare lubricating oil pump motor is bright, recycles from step S31；If flow value is in ultra-low quantity of flow model
Enclose Zone2, ultra-low quantity of flow alarm lamp 2 and failure of pump lamp are bright and issue alarm, and controller control contactor disconnects all lubricating oil
The power circuit of pump motor, indicator light off for the corresponding pump operation of current lubricating oil pump motor.
Step S4: maintenance personnel manually controls electrical equipment and overhauls to failure electrical equipment.
Step S41: rotary work mode and flow selection knob 19 are to " manual " gear, into MANUAL CONTROL mode；
Step S42: it presses No. 1 selection of pump start button 12 and runs main lubricating oil pump motor, while spare lubricating oil pump motor stops
Only run；Or it presses No. 2 selections of pump start button 13 and runs spare lubricating oil pump motor, while main lubricating oil pump motor is out of service；
Pressing lubricating oil pump motor stop button 14 keeps all lubricating oil pump motors out of service；
Step S43: rotary work mode and flow select knob 19 to " local high " gear, make the high stream of oil pump output
Amount；Rotary work mode and flow select knob 19 to " local low " gear, and oil pump is made to export low discharge；
Step S44: pressing mute button 16 after troubleshooting, trouble light goes out, and alarm stops.
It is further comprising the steps of: to send fault-signal, frequency converter failure alarm lamp 5 to controller when frequency converter breaks down
It is bright and issue alarm, emergency button 18 is pressed, controller controls concatenated contactor break contact on frequency converter transmission of electricity access,
Control simultaneously is connected on the backup contactor closure contact of control input unit, and lubricating oil pump motor switchs to hand by automatic control mode
Dynamic control model；It executes step S42 and step S43 and guarantees that device operates normally；Frequency converter failure reset is pressed after troubleshooting
Button 17, frequency converter failure alarm lamp 5 go out, and alarm stops.
In conclusion a kind of shafting oil pump motor frequency conversion automatic control device of the invention and control method are being controlled automatically
On the basis of making two oil pump motor operations, the function of adjusting flow with the control frequency conversion output of shafting revolving speed is realized, is used for
According to different operating condition oil system user demands, the Precise control requirement of lubricating oil is provided on demand.The present invention has lubricating oil
Piping flow monitoring and fault alarm function and manual-operated emergent operating function avoid oil system failure from leading to oil pipe stream
Measure it is out of control, convenient for reminding maintenance personnel to repair in time.The present invention effectively reduces the mean power of oil pump motor operation,
The service efficiency of oil system is improved, and then reduces the energy consumption and noise of oil system operation, have energy-saving and noise-reducing has
Beneficial effect.
Above embodiments are merely to illustrate design philosophy and feature of the invention, and its object is to make technology in the art
Personnel can understand the content of the present invention and implement it accordingly, and protection scope of the present invention is not limited to the above embodiments.So it is all according to
It is within the scope of the present invention according to equivalent variations made by disclosed principle, mentality of designing or modification.
Claims (10)
1. a kind of shafting oil pump motor frequency conversion automatic control device, it is characterised in that: including controller, frequency converter and contact
Device；
The signal input part of controller is connect with the signal output end of host computer and sensor respectively, for receiving host computer and biography
Sensor send signal and calculating；
The coil of contactor and the signal output end of controller connect, the contact of the order control contactor for receiving controller
On-off；
The signal input part of frequency converter and the signal output end of controller connect, and the power input of frequency converter passes through one group of contact
The contact of device is connect with power supply, and the power output end of frequency converter passes through the contact of another group of contactor and the electricity of electrical equipment
Source input terminal connection, for receiving the order of controller transmission, power supply being converted into the power supplys of electrical equipment needs and defeated
Out.
2. a kind of shafting oil pump motor frequency conversion automatic control device according to claim 1, it is characterised in that: further include
Sensor, sensor include flow sensor, speed probe, differential pressure pickup and liquid level sensor；Flow sensor setting
For monitoring piping flow in lube pipe；
Speed probe is arranged on shafting structure for monitoring the revolving speed of shafting structure；
The import and export that lube pipe is arranged in differential pressure pickup is used to monitor the inlet outlet pressure differential of lubricant filtering device；
Liquid level sensor is arranged in fuel tank for monitoring the liquid level of fuel tank.
3. a kind of shafting oil pump motor frequency conversion automatic control device according to claim 1, it is characterised in that: further include
Control input unit and acousto-optic warning indicator；Controlling input unit includes button and knob, controls the signal of input unit
The signal input part of output end and controller connection, for sending the order that user inputs to controller；Acoustic-optic alarm packet
Indicator light and buzzer are included, the signal input part of acoustic-optic alarm and the signal output end of controller connect, for receiving control
The alarm signal of device transmission processed is simultaneously alarmed with acoustooptic form.
4. a kind of shafting oil pump motor frequency conversion automatic control device according to claim 3, it is characterised in that: further include
Backup contactor, the coil for backing up contactor are connect with the signal output end of control input unit, back up the contact string of contactor
It is connected between power supply end and the power input of electrical equipment, for receiving the operation control of user by control input unit
Prepare the on-off of the contact of the contactor of part.
5. a kind of shafting oil pump motor frequency conversion automatic control device according to claim 1, it is characterised in that: further include
Filter, filters in series is between the contactor and frequency converter of power supply end, for filtering out the interference of power supply output,
Improve the power quality for being output to frequency converter；It further include breaker, breaker is connected on contactor and the power supply of power supply end
Between power supply, the on-off of the output for controlling power supply.
6. based on a kind of control method of shafting oil pump motor frequency conversion automatic control device described in claim 1, feature
It is: the following steps are included:
Step S1: the device of the invention and power supply, electrical equipment and sensor are connected, and are selected certainly after power-up initializing
Dynamic control model, controller control corresponding electrical equipment according to the host computer signal received and run；
Step S2: controller receiving sensor signal and the electric voltage frequency for controlling frequency converter output；
Step S3: controller receiving sensor signal simultaneously judges whether that meeting setting value requires, and thens follow the steps S2 if normal, if
It is abnormal then alarm and execute further operating；
Step S4: maintenance personnel manually controls electrical equipment and overhauls to failure electrical equipment.
7. a kind of control method according to claim 6, it is characterised in that: in the step S2, specific steps are as follows:
Step S21: the tach signal for the shafting structure that controller real-time reception speed probe is sent；
Step S22: controller calculates electricity corresponding with the matched lubricating oil pump discharge of shafting structure according to the signal that step S21 is obtained
Frequency signal is pressed, and is sent to frequency converter；
Step S23: frequency converter receives power supply by contactor, according to the obtained signal control out-put supply of step S22
Frequency, and power supply is output to control lubricating oil pump discharge by lubricating oil pump motor by contactor.
8. a kind of control method according to claim 7, it is characterised in that: in the step S3, specific steps are as follows:
Step S31: the differential pressure signal for the lubricant filtering device inlet and outlet that controller real-time reception differential pressure pickup is sent simultaneously judges to press
The size of power difference, if pressure difference is greater than the set value, acoustic-optic alarm issues sound and light alarm signal；If pressure difference is less than or equal to
Setting value, sound and light alarm signal stop；
Step S32: the height that controller real-time reception liquid level sensor is sent sets the liquid level signal of fuel tank and judges the height of liquid level,
If liquid level is lower than setting value, acoustic-optic alarm issues sound and light alarm signal；If liquid level is optionally greater than setting value, sound-light alarm letter
Number stop；
Step S33: the flow signal for the lube pipe that controller real-time reception flow sensor is sent simultaneously judges the big of flow value
Small, if flow value is in normal range (NR), currently running lubricating oil pump motor is worked normally, no sound and light alarm signal, from step S2
Circulation；If flow value is in low discharge range, acoustic-optic alarm issues sound and light alarm signal, and controller control contactor disconnects
The power circuit of current lubricating oil pump motor, is connected to the power circuit of another lubricating oil pump motor, recycles from step S31；If flow value
In ultra-low quantity of flow range, acoustic-optic alarm issues sound and light alarm signal, and controller control contactor disconnects all oil pumps
The power circuit of motor.
9. a kind of control method according to claim 8, it is characterised in that: in the step S4, specific steps are as follows:
Step S41: MANUAL CONTROL mode is selected by control input unit；
Step S42: main lubricating oil pump motor is run by control input unit selection, while spare lubricating oil pump motor is out of service；
Or spare lubricating oil pump motor is run by control input unit selection, while main lubricating oil pump motor is out of service；It is defeated by controlling
Entering device keeps all lubricating oil pump motors out of service；
Step S43: oil pump is made to export high flow capacity or low discharge by controlling input unit；
Step S44: sound and light alarm signal is eliminated by control input unit after troubleshooting.
10. a kind of control method according to claim 9, it is characterised in that: further comprising the steps of: event occurs for frequency converter
Fault-signal is sent to controller when barrier, acoustic-optic alarm issues sound and light alarm signal, manual switching contingency mode, controller
Concatenated contactor break contact on frequency converter transmission of electricity access is controlled, while control is connected on the backup contact of control input unit
Device is closed contact, and lubricating oil pump motor switchs to MANUAL CONTROL mode by automatic control mode；Step S42 and step S43 is executed to guarantee
Device operates normally；Sound and light alarm signal is eliminated by control input unit after troubleshooting.
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