CN109226275A - Pressure flow hybrid control system and operating method for the high line lubricating arrangement of metallurgy - Google Patents
Pressure flow hybrid control system and operating method for the high line lubricating arrangement of metallurgy Download PDFInfo
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- CN109226275A CN109226275A CN201810939911.9A CN201810939911A CN109226275A CN 109226275 A CN109226275 A CN 109226275A CN 201810939911 A CN201810939911 A CN 201810939911A CN 109226275 A CN109226275 A CN 109226275A
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- pressurized tank
- liquid level
- pressure
- lubricating arrangement
- oil
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B2037/002—Mass flow control
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Abstract
The invention discloses a kind of pressure flow hybrid control systems for the high line lubricating arrangement of metallurgy, including oil pump, pressurized tank, Pneumatic butterfly valve, pressure transmitter, pneumatic control part and the magnetic float liquidlevel meter being mounted on pressurized tank, safety valve and pressure gauge；Control system includes PLC controller, the human-computer interaction device with PLC controller communication connection；PLC controller includes power supply, switching input module, switching value output module, Analog input mModule, analog output module, communication module and central processing unit.The design of the invention is scientific and reasonable, stable can provide lubricating oil to milling train, reliable for operation, guarantees the good lubrication of milling equipment, and system is powered down or the former energy depended on pressure tank of failure continues fuel feeding 3~5 minutes, guarantees milling train safe shutdown.
Description
Technical field
The invention belongs to metallurgical high speed wire rolling technical fields, and in particular to a kind of pressure for the high line lubricating arrangement of metallurgy
Flow control system and operating method.
Background technique
Its speed can reach 100m/s or more to the high line of metallurgy during the rolling process, thus to the automatic control level of equipment
It is required that very high.During high speed wire rolling, a large amount of bearings and gear operate under high speed, higher load condition, the confession of lubricating arrangement
Oil-proofness plays the role of highly important.
High-speed wire mill includes thick, middle bundle equipment and finish rolling machine equipment.Wherein thick, the middle lubrication object for pricking equipment is mainly tooth
Wheel and rolling bearing, are mainly characterized by low speed, and heavy duty, oil liquid is ejected on gear, need to guarantee enough flows and pressure,
Therefore generally require the viscosity of lubricating oil product big.Due to steel mill's milling train characteristic distributions, pipeline is longer, and charge oil pressure, flow are unstable
It is fixed, it is bad to will lead to mill lubrication.Finish rolling machine equipment includes pre-finishing mill, finishing mill, reducing sizing mill, Laying head etc..It is such to set
Standby revolving speed is high, there is a large amount of rolling bearings and filmatic bearing.Due to having the presence of roll-box, directly receiving rolling load, practical item
Part is harsher, and filmatic bearing mostly uses hydrldynamic pressure lubrication, so cleannes and pressure, the traffic requirement to oil product are stringent.
Therefore it provides a kind of pressure flow hybrid control system for the high line lubricating arrangement of metallurgy, offer that can be stable lubricates
Oil, it is reliable for operation, guarantee the good lubrication of milling equipment, system is powered down or the former energy depended on pressure tank of failure continues 3~5 points of fuel feeding
Clock guarantees milling train safe shutdown, becomes those skilled in the art's urgent problem to be solved.
Summary of the invention
It is an object of the invention to overcome the deficiencies of the prior art and provide a kind of pressure for the high line lubricating arrangement of metallurgy
Flow control system and method, milling equipment lubricating arrangement fuel feeding is unstable in the prior art for solution, influences equipment safety operation
The problem of.
The purpose of the present invention is achieved through the following technical solutions: a kind of pressure for the high line lubricating arrangement of metallurgy
Flow control system, including oil pump, pressurized tank, Pneumatic butterfly valve, pressure transmitter, pneumatic control part and it is mounted on pressurized tank
On magnetic float liquidlevel meter, safety valve and pressure gauge；
Control system includes PLC controller, the human-computer interaction device with PLC controller communication connection；
PLC controller includes power supply, switching input module, switching value output module, Analog input mModule, analog quantity
Output module, communication module and central processing unit；
Human-computer interaction device is used to carry out parameter setting, Data visualization and the offer operation interface of control system；
At least two, oil pump, two one, oil pump operations one are spare, two oil pumps mutual backup at runtime；
Pressure transmitter at least one, it is installed on the outlet of pressurized tank, the pressure for acquiring and feedback pressure tank exports
Power；
Four liquid-level switches are at least installed on magnetic float liquidlevel meter, are respectively intended to high point, the liquid level of detection pressure liquid level
Operating point, liquid level low spot and liquid level low spot；
Pneumatic butterfly valve at least one, the feedback signal above with feedback valve opening and closing is installed on after pressure transmitter
The outlet of pressurized tank, for controlling the opening and closing of oil-feed port；
Pneumatic control part, comprising bi-bit bi-pass (normally closed) solenoid valve for controlling Pneumatic butterfly valve, when gas supply pneumatic butterfly
Valve is closed, and is stopped Pneumatic butterfly valve when gas supply and is opened；For controlling bi-bit bi-pass (normally opened) solenoid valve supplied to pressurized tank, electromagnetism
Valve must not supply when electricity to pressurized tank, not supply to pressurized tank when solenoid valve obtains electric, for controlling supply to pressurized tank two
It is connected on the same pipeline of position two-way (normally opened) solenoid valve and increases stressed supercharger arrangement, for bleed pressure to be increased,
Guarantee that pressure is greater than charge oil pressure.
It is preferred that oil pump the using and the reserved, mutual backup, switching, exchange-column shift, pressure are low when including oil pump fault
When switch.
It is preferred that liquid-level switch on pressurized tank, high point, low spot are for alarming, and low spot is for reporting weight failure to stop
Machine, work liquid level is for controlling bi-bit bi-pass (normally opened) solenoid valve, and when being higher than work liquid level, solenoid valve power loss is mended to pressurized tank
Gas declines liquid level, be lower than work liquid level when, solenoid valve obtain it is electric, stopping give pressurized tank tonifying Qi.
It is preferred that Pneumatic butterfly valve be it is open in usual, not supplying be Pneumatic butterfly valve is opening state, and gas supply is to close shape
State can give milling train fuel feeding when guaranteeing lubricating arrangement power down.
It is preferred that being equipped with safety valve on pressurized tank, prevent pressure pressure tank too high, pressure gauge is installed, uses
Pressure pressure tank is observed on site, while the volume of pressurized tank wants sufficiently large, when guaranteeing that system is powered down, remain to 3~5 points of fuel feeding
Clock guarantees milling train safe shutdown.
It is preferred that PLC controller exports following signals to master control:
The signal of information is provided: pointing out the presence of a condition, saves information record；
System early warning: if alarm is within a certain period of time without processed, issuing terminates rolling signal, and opening terminates rolling
Process；
Terminate rolling signal: milling train terminates billet rolling, does not allow to be supplemented steel billet, once steel billet terminates to roll, milling train
It shuts down, next stops lubricating arrangement；
Fault-signal: it is cataclasm to cut operation, do not allow rolling mill input, to pressurized tank supply bi-bit bi-pass (normally opened) power loss when
It is supplied to pressurized tank, guarantees the regular supply of oil liquid, guarantee safe shutdown.
It is preferred that the invention also includes for controlling and protecting oil pump electrothermal relay, A.C. contactor and
Breaker is installed in control cabinet.
It is preferred that the invention also includes control cabinet, PLC controller, electrothermal relay, A.C. contactor, breaker
It is mounted in control cabinet, human-computer interaction device is mounted on the door of control cabinet.
It is preferred that PLC controller is Siemens S7-1500PLC controller.
A kind of operating method of the pressure flow hybrid control system for the high line lubricating arrangement of metallurgy, includes the following steps:
Step 1: the current setting of setting motor heating relay, two Oil pump electrical machineries are set as 84.9A, adjustment pressure
The pressure of safety valve is 10bar on power tank, sets the supply gas pressure 5bar of system gas source, adjusts liquid-level switch on pressurized tank
Sender position: liquid level low spot (the 30% of pressurized tank liquid level), liquid level low spot (the 40% of pressurized tank liquid level), pressure
Power tank work liquid level (the 70% of pressurized tank liquid level), liquid level high point (the 90% of pressurized tank liquid level)；
Step 2: system electrification, pre-set system operational parameters: system working pressure, the system pressure upper limit and under
Limit；Step setting is generally carried out in human-computer interaction device or interface；Crawl Oil pump electrical machinery, checks whether the steering of motor meets
Design requirement, if turn on the contrary, if change the motor mode of connection；
Step 3: System self-test, lubricating arrangement, which issues, if normal allows long-range enabling signal；
In general, in System self-test, allow long-range enabling signal, fatal mistake as long as not occurring fatal error and can issue
Accidentally such as pressure is too high, oil pump overloads, oil pump inlet valve completely closes, and self-test key sensor is normal (pressure transmitter), closes
Key valve position is normal (Pneumatic butterfly valve, in open state)；
Step 4: after master control receives the long-range enabling signal of lubricating arrangement permission, lubricating arrangement is given to send driving signal, lubrication
After petrol station receives driving signal, lubricating arrangement starts immediately, executes step 6；
Step 5: if lubricating arrangement does not receive driving signal, return step three；
Step 6: the starting oil-filled program of pressurized tank, pressurized tank oil-filled time are 120S,
Step 7: whether detection pressurized tank liquid level is lower than low liquid level；If being lower than low liquid level, bi-bit bi-pass (normally closed) electromagnetism
Valve obtain it is electric, give Pneumatic butterfly valve gas supply, make Pneumatic butterfly valve close 10S, open 5S, return step six；
Step 8: until the pressurized tank oil-filled time arrives or pressurized tank liquid level is not less than low liquid level；Then perform the next step；
Step 9: lubricating arrangement starts to start oil-filled completion program, start-up study timer, delay time 10S；
Step 10: delay time arrives, and starts to detect charge oil pressure, and charge oil pressure is low, then spare pump startup, executes step 10
One；If not low, which is run always, executes step 12；
Step 11: it if after spare pump startup, delay 3S stops main pump, and alarms, prompts which pump faulty, executes step
Rapid 12；
Step 12: starting pressurized tank supplies program, before lubricating arrangement starting, if pressurized tank liquid level is higher than work liquid level,
Then bi-bit bi-pass (normally opened) solenoid valve power loss, to pressurized tank gas supply (be connected with supercharger arrangement behind solenoid valve, be pressurized ratio 2:
1, for air pressure to be increased to 10bar by original 5bar), until liquid level works liquid level lower than pressurized tank, solenoid valve obtains electric, stops
Only supplied to pressurized tank；
After lubricating arrangement starting, if pressurized tank liquid level is higher than work liquid level, it is high that delay 5S or pressurized tank liquid level are higher than liquid level
Set point, then bi-bit bi-pass (normally opened) solenoid valve power loss give pressurized tank gas supply, until liquid level works liquid level lower than pressurized tank, prolong
When 5S, solenoid valve obtain it is electric, stop give pressurized tank gas supply；
In system operation, pressurized tank liquid level is stable always near the work liquid level of pressurized tank setting, guarantees pressure
Power tank has enough oil liquid and pressure, guarantees that lubricating arrangement charge oil pressure, flow in the range of setting；
If middle control the operation for needing to stop lubricating arrangement, the driving signal of lubricating arrangement is disconnected, lubricating arrangement starting stops
Only program, first oil pump are out of service.
The beneficial effects of the present invention are:
The configuration of the present invention is simple, design is scientific and reasonable, stable can provide lubricating oil to milling train, reliable for operation, guarantees to roll
The good lubrication of machine equipment, system is powered down or the former energy depended on pressure tank of failure continues fuel feeding 3~5 minutes, guarantees milling train safe stopping
Machine.
Main power source is provided to system by oil pump in the present invention, air supply system provides auxiliary power source, and pressurized tank is used for
Systems stabilisation charge oil pressure guarantees charge oil pressure, stability of flow, while storing oil liquid with pressurized tank, guarantees that system is powered down or oil
When failure of pump, milling train fuel feeding can persistently be given by appointing, and guarantee milling train safe shutdown.
Very convenient, excellent working performance is safeguarded in present invention maintenance, and long service life can be long-term steady in complex environment
Surely it runs.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention.
Specific embodiment
Technical solution of the present invention is described in further detail with reference to the accompanying drawing, but protection scope of the present invention is not limited to
It is as described below.
As shown in Figure 1, a kind of pressure flow hybrid control system for the high line lubricating arrangement of metallurgy, lubricating arrangement includes oil
Pump, pressurized tank, Pneumatic butterfly valve, pressure transmitter, pneumatic control part and the magnetic float liquidlevel meter being mounted on pressurized tank, peace
Full valve and pressure gauge；
Pneumatic control part includes for controlling the bi-bit bi-pass of Pneumatic butterfly valve (normally closed) solenoid valve, for controlling to pressure
Bi-bit bi-pass (normally opened) solenoid valve of tank gas supply, and for increasing stressed supercharger arrangement；
Control system includes PLC controller, the human-computer interaction device with PLC controller communication connection；
PLC controller includes power supply, switching input module, switching value output module, Analog input mModule, analog quantity
Output module, communication module and central processing unit；
Human-computer interaction device is used to carry out parameter setting, Data visualization and the offer operation interface of control system；
At least two, oil pump, two one, oil pump operations one are spare, two oil pumps mutual backup at runtime；
Pressure transmitter at least one, it is installed on pressurized tank outlet, the pressure for acquiring and feedback pressure tank exports；
Four liquid-level switches are at least installed on magnetic float liquidlevel meter, are respectively intended to high point, the liquid level of detection pressure liquid level
Operating point, liquid level low spot and liquid level low spot；
Pneumatic butterfly valve at least one, the feedback signal above with feedback valve opening and closing, after being installed on pressure transmitter
Pressurized tank outlet, for controlling the opening and closing of oil-feed port；
Pneumatic control part, comprising bi-bit bi-pass (normally closed) solenoid valve for controlling Pneumatic butterfly valve, when gas supply pneumatic butterfly
Valve is closed, and is stopped Pneumatic butterfly valve when gas supply and is opened；For controlling bi-bit bi-pass (normally opened) solenoid valve supplied to pressurized tank, electromagnetism
Valve must not supply when electricity to pressurized tank, not supply to pressurized tank when solenoid valve obtains electric, for controlling supply to pressurized tank two
It is connected on the same pipeline of position two-way (normally opened) solenoid valve and increases stressed supercharger arrangement, for bleed pressure to be increased,
Guarantee that pressure is greater than charge oil pressure.
In a preferred embodiment, oil pump the using and the reserved, mutual backup, include oil pump fault when switching, exchange-column shift,
Switch when pressure is low.
In a preferred embodiment, liquid-level switch on pressurized tank, high point, low spot are for alarming, and low spot is for reporting weight
Disorderly closedown, work liquid level is for controlling bi-bit bi-pass (normally opened) solenoid valve, when being higher than work liquid level, solenoid valve power loss, to pressure
Power tank tonifying Qi, declines liquid level, be lower than work liquid level when, solenoid valve obtain it is electric, stopping give pressurized tank tonifying Qi.
In a preferred embodiment, Pneumatic butterfly valve is open in usual, and not supplying be Pneumatic butterfly valve is opening state, and gas supply is
Closed state can give milling train fuel feeding when guaranteeing lubricating arrangement power down.
In a preferred embodiment, safety valve is installed on pressurized tank, prevents pressure pressure tank too high, pressure is installed
Table is used for field observation pressure pressure tank, while the volume of pressurized tank wants sufficiently large, when guaranteeing that system is powered down, remain to fuel feeding 3~
5 minutes, guarantee milling train safe shutdown.
In a preferred embodiment, PLC controller exports following signals to master control:
The signal of information is provided: pointing out the presence of a condition, saves information record；
System early warning: if alarm is within a certain period of time without processed, issuing terminates rolling signal, and opening terminates rolling
Process；
Terminate rolling signal: milling train terminates billet rolling, does not allow to be supplemented steel billet, once steel billet terminates to roll, milling train
It shuts down, next stops lubricating arrangement；
Fault-signal: it is cataclasm to cut operation, do not allow rolling mill input, to pressurized tank supply bi-bit bi-pass (normally opened) power loss when
It is supplied to pressurized tank, guarantees the regular supply of oil liquid, guarantee safe shutdown.
In a preferred embodiment, the invention also includes connect for controlling and protecting the electrothermal relay of oil pump, exchange
Tentaculum and breaker, are installed in control cabinet.
In a preferred embodiment, the invention also includes control cabinet, PLC controller, electrothermal relay, A.C. contactor,
Breaker is mounted in control cabinet, and human-computer interaction device is mounted on the door of control cabinet.
In a preferred embodiment, PLC controller is Siemens S7-1500PLC controller.
A kind of operating method of the pressure flow hybrid control system for the high line lubricating arrangement of metallurgy, includes the following steps:
Step 1: the current setting of setting motor heating relay, two Oil pump electrical machineries are set as 84.9A, adjustment pressure
The pressure of safety valve is 10bar on power tank, sets the supply gas pressure 5bar of system gas source, adjusts liquid-level switch on pressurized tank
Sender position: liquid level low spot (the 30% of pressurized tank liquid level), liquid level low spot (the 40% of pressurized tank liquid level), pressure
Power tank work liquid level (the 70% of pressurized tank liquid level), liquid level high point (the 90% of pressurized tank liquid level)；
Step 2: system electrification, pre-set system operational parameters: system working pressure, the system pressure upper limit and under
Limit；Step setting is generally carried out in human-computer interaction device or interface；Crawl Oil pump electrical machinery, checks whether the steering of motor meets
Design requirement, if turn on the contrary, if change the motor mode of connection；
Step 3: System self-test, lubricating arrangement, which issues, if normal allows long-range enabling signal；
In general, in System self-test, as long as not occurring, fatal error is i.e. capable of emitting to allow long-range enabling signal (such as pressure
Too high, oil pump overload, oil pump inlet valve completely close), key sensor is normal (pressure transmitter), and crucial valve position is normal
(Pneumatic butterfly valve, in open state)；
Step 4: after master control receives the long-range enabling signal of lubricating arrangement permission, lubricating arrangement is given to send driving signal, lubrication
After petrol station receives driving signal, lubricating arrangement starts immediately, executes step 6；
Step 5: if lubricating arrangement does not receive driving signal, return step three；
Step 6: the starting oil-filled program of pressurized tank, pressurized tank oil-filled time are 120S,
Step 7: whether detection pressurized tank liquid level is lower than low liquid level；If being lower than low liquid level, bi-bit bi-pass (normally closed) electromagnetism
Valve obtain it is electric, give Pneumatic butterfly valve gas supply, make Pneumatic butterfly valve close 10S, open 5S, return step six；
Step 8: until the pressurized tank oil-filled time arrives or pressurized tank liquid level is not less than low liquid level；Then perform the next step；
Step 9: lubricating arrangement starts to start oil-filled completion program, start-up study timer, delay time 10S；
Step 10: delay time arrives, and starts to detect charge oil pressure, and charge oil pressure is low, then spare pump startup, executes step 10
One；If not low, which is run always, executes step 12；
Step 11: it if after spare pump startup, delay 3S stops main pump, and alarms, prompts which pump faulty, executes step
Rapid 12；
Step 12: starting pressurized tank supplies program, before lubricating arrangement starting, if pressurized tank liquid level is higher than work liquid level,
Then bi-bit bi-pass (normally opened) solenoid valve power loss, to pressurized tank gas supply (be connected with supercharger arrangement behind solenoid valve, be pressurized ratio 2:
1, for air pressure to be increased to 10bar by original 5bar), until liquid level works liquid level lower than pressurized tank, solenoid valve obtains electric, stops
Only supplied to pressurized tank；
After lubricating arrangement starting, if pressurized tank liquid level is higher than work liquid level, it is high that delay 5S or pressurized tank liquid level are higher than liquid level
Set point, then bi-bit bi-pass (normally opened) solenoid valve power loss give pressurized tank gas supply, until liquid level works liquid level lower than pressurized tank, prolong
When 5S, solenoid valve obtain it is electric, stop give pressurized tank gas supply；
In system operation, pressurized tank liquid level is stable always near the work liquid level of pressurized tank setting, guarantees pressure
Power tank has enough oil liquid and pressure, guarantees that lubricating arrangement charge oil pressure, flow in the range of setting；
If middle control the operation for needing to stop lubricating arrangement, the driving signal of lubricating arrangement is disconnected, lubricating arrangement starting stops
Only program, first oil pump are out of service.
In a preferred embodiment, whether detection pressurized tank liquid level is higher than work liquid level, two if being higher than work liquid level
Position two-way (normally opened) solenoid valve power loss gives pressurized tank gas supply, and until liquid level works liquid level lower than pressurized tank, solenoid valve obtains electric, stops
Only supplied to pressurized tank；If liquid level lower than pressurized tank work liquid level, allow solenoid valve always it is electric；Execute: start-up study is closed
The Pneumatic butterfly valve of lubricating arrangement fuel feeding button, delay time 30S or pressurized tank liquid level lower than setting low liquid level point, then two
Two-way (normally closed) solenoid valve obtain it is electric, give Pneumatic butterfly valve gas supply, close Pneumatic butterfly valve, lubricating arrangement fuel cut-off.
In a preferred embodiment, at any time, if lubricating arrangement oil pump is out of service, milling train operation letter is also received
Number, then Pneumatic butterfly valve is opened, while being supplied to pressurized tank always, so that the oil liquid of pressurized tank is supplied milling train always, is guaranteed milling train
Safe operation；
In a preferred embodiment, at any time, as long as Lubrication Control System power down, Pneumatic butterfly valve is opened, together
Shi Yizhi is supplied to pressurized tank, and the oil liquid of pressurized tank is made to supply milling train always；The volume of pressurized tank in this are as follows: 3258L, lubrication
The metered flow of device is 736L/min；When guaranteeing that system is powered down, appointing can be fuel feeding 3~5 minute, guarantees milling train safe shutdown.
Device therefor and electronic component of the present invention are existing known device and electronic component, by will be above-mentioned existing
Equipment and electronic component are cleverly combined by science, efficiently solve milling equipment lubricating arrangement fuel feeding in the prior art
It is unstable, the problem of influencing equipment safety operation；When guaranteeing that system is powered down simultaneously, appointing can be fuel feeding 3~5 minute, guarantees milling train peace
Full cut-off machine.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, it is noted that all
Made any modifications, equivalent replacements, and improvements etc. within the spirit and principles in the present invention should be included in guarantor of the invention
Within the scope of shield.
Claims (7)
1. a kind of pressure flow hybrid control system for the high line lubricating arrangement of metallurgy, it is characterised in that: including oil pump, pressurized tank,
Pneumatic butterfly valve, pressure transmitter, pneumatic control part and the magnetic float liquidlevel meter being mounted on pressurized tank, safety valve and pressure
Table；
Control system includes PLC controller, the human-computer interaction device with PLC controller communication connection；
PLC controller includes power supply, switching input module, switching value output module, Analog input mModule, analog output
Module, communication module and central processing unit；
Human-computer interaction device is used to carry out parameter setting, Data visualization and the offer operation interface of control system；
At least two, oil pump, two one, oil pump operations one are spare；
Pressure transmitter at least one, it is installed on the outlet of pressurized tank, the pressure for acquiring and feedback pressure tank exports；
Four liquid-level switches are at least installed on magnetic float liquidlevel meter, are respectively intended to high point, the liquid level work of detection pressure liquid level
Point, liquid level low spot and liquid level low spot；
Pneumatic butterfly valve at least one, the feedback signal above with feedback valve opening and closing is installed on pressure after pressure transmitter
The outlet of tank, for controlling the opening and closing of oil-feed port；
Pneumatic control part, comprising bi-bit bi-pass (normally closed) solenoid valve for controlling Pneumatic butterfly valve, Pneumatic butterfly valve is closed when gas supply
It closes, stops Pneumatic butterfly valve when gas supply and open；For controlling bi-bit bi-pass (normally opened) solenoid valve supplied to pressurized tank, solenoid valve is not
It gives pressurized tank to supply when obtaining electric, pressurized tank is not given to supply when solenoid valve obtains electric, for controlling two two supplied to pressurized tank
It is connected on the same pipeline of logical (normally opened) solenoid valve and increases stressed supercharger arrangement, for increasing bleed pressure, guaranteed
Pressure is greater than charge oil pressure.
2. a kind of pressure flow hybrid control system for the high line lubricating arrangement of metallurgy according to claim 1, feature exist
Be in: Pneumatic butterfly valve it is open in usual, not supplying be Pneumatic butterfly valve is opening state, and gas supply is closed state, guarantees lubricating arrangement dress
When setting power down, milling train fuel feeding can be given.
3. a kind of pressure flow hybrid control system for the high line lubricating arrangement of metallurgy according to claim 1, feature exist
In: PLC controller exports following signals to master control:
The signal of information is provided: pointing out the presence of a condition, saves information record；
System early warning: if alarm is within a certain period of time without processed, issuing terminates rolling signal, and opening terminates rolling stream
Journey；
Terminate rolling signal: milling train terminates billet rolling, does not allow to be supplemented steel billet, once steel billet terminates to roll, milling train is shut down,
Next stop lubricating arrangement；
Fault-signal: it is cataclasm to cut operation, do not allow rolling mill input, to pressurized tank supply bi-bit bi-pass (normally opened) power loss when to pressure
Power tank gas supply, guarantees the regular supply of oil liquid, guarantees safe shutdown.
4. a kind of pressure flow hybrid control system for the high line lubricating arrangement of metallurgy according to claim 1, feature exist
In: further include the electrothermal relay, A.C. contactor and breaker for controlling and protecting oil pump, is installed in control cabinet.
5. a kind of pressure flow hybrid control system for the high line lubricating arrangement of metallurgy according to claim 1, feature exist
In: it further include control cabinet, PLC controller, electrothermal relay, A.C. contactor, breaker are mounted in control cabinet, and human-computer interaction is set
It is standby to be mounted on the door of control cabinet.
6. a kind of pressure flow hybrid control system for the high line lubricating arrangement of metallurgy according to claim 1, feature exist
In: PLC controller is Siemens S7-1500PLC controller.
7. a kind of operating method of the pressure flow hybrid control system for the high line lubricating arrangement of metallurgy, which is characterized in that including such as
Lower step:
Step 1: the current setting of setting motor heating relay, two Oil pump electrical machineries are set as 84.9A, adjust pressurized tank
The pressure of upper safety valve is 10bar, sets the supply gas pressure 5bar of system gas source, adjusts the hair of liquid-level switch on pressurized tank
Interrogate position: liquid level low spot, liquid level low spot, pressurized tank work liquid level, liquid level high point；
Step 2: system electrification, pre-set system operational parameters: system working pressure, the system pressure upper limit and lower limit；Point
Dynamic Oil pump electrical machinery, checks whether the steering of motor meets design requirement, if turn on the contrary, if change the motor mode of connection；
Step 3: System self-test, lubricating arrangement, which issues, if normal allows long-range enabling signal；
Step 4: after master control receives the long-range enabling signal of lubricating arrangement permission, lubricating arrangement is given to send driving signal, lubricating oil station
After receiving driving signal, lubricating arrangement starts immediately, executes step 6；
Step 5: if lubricating arrangement does not receive driving signal, return step three；
Step 6: the starting oil-filled program of pressurized tank, pressurized tank oil-filled time are 120S,
Step 7: whether detection pressurized tank liquid level is lower than low liquid level；If being lower than low liquid level, bi-bit bi-pass (normally closed) solenoid valve is obtained
Electricity is supplied to Pneumatic butterfly valve, and Pneumatic butterfly valve is made to close 10S, is opening 5S, return step six；
Step 8: until the pressurized tank oil-filled time arrives or pressurized tank liquid level is not less than low liquid level；Then perform the next step；
Step 9: lubricating arrangement starts to start oil-filled completion program, start-up study timer, delay time 10S；
Step 10: delay time arrives, and starts to detect charge oil pressure, and charge oil pressure is low, then spare pump startup, executes step 11；
If not low, which is run always, executes step 12；
Step 11: it if after spare pump startup, delay 3S stops main pump, and alarms, prompts which pump faulty, executes step 10
Two；
Step 12: starting pressurized tank supply program, lubricating arrangement starting before, if pressurized tank liquid level be higher than work liquid level, two
Position two-way (normally opened) solenoid valve power loss gives pressurized tank gas supply, and until liquid level works liquid level lower than pressurized tank, solenoid valve obtains electric, stops
Only supplied to pressurized tank；
After lubricating arrangement starting, if pressurized tank liquid level is higher than work liquid level, delay 5S or pressurized tank liquid level are set higher than liquid level height
Point, then bi-bit bi-pass (normally opened) solenoid valve power loss, supplies to pressurized tank, and until liquid level is lower than pressurized tank work liquid level, be delayed 5S,
Solenoid valve obtain it is electric, stop give pressurized tank gas supply；
In system operation, pressurized tank liquid level is stable always near the work liquid level of pressurized tank setting, guarantees pressurized tank
There are enough oil liquid and pressure, guarantees that lubricating arrangement charge oil pressure, flow in the range of setting；
If middle control the operation for needing to stop lubricating arrangement, the driving signal of lubricating arrangement is disconnected, lubricating arrangement starting stops journey
Sequence, first oil pump are out of service.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN109226275B (en) | 2020-02-18 |
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Effective date of registration: 20201207 Address after: No.1901, 19 / F, unit 1, building 6, no.695, Tianfu 1st Street, Chengdu hi tech Zone, Sichuan 610000 Patentee after: Sichuan chuanrun intelligent fluid technology Co.,Ltd. Address before: 611743 Sichuan province Chengdu city Chengdu District PI Du modern industrial port area Patentee before: SICHUAN CRUN Co.,Ltd. |