CN106315438B - A kind of furnace roof stock rod hydraulic control device and method - Google Patents
A kind of furnace roof stock rod hydraulic control device and method Download PDFInfo
- Publication number
- CN106315438B CN106315438B CN201610934224.9A CN201610934224A CN106315438B CN 106315438 B CN106315438 B CN 106315438B CN 201610934224 A CN201610934224 A CN 201610934224A CN 106315438 B CN106315438 B CN 106315438B
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- roller
- reversing valve
- ruler
- proportional reversing
- hydraulic
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
- B66D1/02—Driving gear
- B66D1/08—Driving gear incorporating fluid motors
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
- C21B7/24—Test rods or other checking devices
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Blast Furnaces (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The present invention relates to a kind of furnace roof stock rod hydraulic control device and methods, including controlling the forward direction of hydraulic motor using control hydraulic flow, reversely rotating, the proportional reversing valve of braking and revolving speed；Hydraulic motor is used to control the steering, braking and revolving speed of roller；Roller, drive material hammer movement, carry out the measurement and real time monitoring of material position height when blast furnace ironmaking, roller is equipped with encoder for measuring roller rotation data, and encoder is used for data transfer to being used to control PLC into the blast furnace that proportional reversing valve issues command signal.The present invention carries out the control in direction and flow by using proportional reversing valve, drives roller to realize the up and down motion of material hammer by hydraulic motor, completes the measurement and real time monitoring of material position height when blast furnace ironmaking；Further, by using technologies such as hydraulic-driven, flow velocity control, closed-loop systems, have the characteristics that low cost, debugging is convenient, run smoothly, securely and reliably, save environmental protection.
Description
Technical field
The present invention relates to technical field of blast furnace process, more particularly to a kind of furnace roof stock rod hydraulic control device and method.
Background technique
The detection of material position height when furnace roof stock rod is mainly used in blast furnace ironmaking, by driving device and material hammer roller and speed
Control unit composition.Currently, in blast furnace ironmaking stock rod system, it is common to use electric sounding rod drives speed reducer by motor
Roller is driven, so that making the wirerope being wound on roller that material hammer be driven to move up and down completes material-level measure, electric sounding rod is used
The mode of Frequency Converter Control speed carries out the detection of blast furnace level.
However, electric sounding rod needs frequency converter to carry out vector controlled to motor, have the following deficiencies: that the debugging of 1, electric sounding rod is tired
It is difficult.Due to frequency converter to the control of motor be vector controlled (vector controlled be will load on stator Current Decomposition be two hang down
Straight vector, i.e. exciting current and rotor current, and AC asynchronous motor is controlled using hvdc control mode is encouraged), tuning parameter
There are a parameters up to up to a hundred such as voltage, electric current, torque, revolving speed, stator parameter, rotor parameter, excitation parameter, debugging control is very
It is difficult；2, electric sounding rod uses unstable.Vector controlled is more sensitive to the variation of loading moment, during actual use material hammer
Belonging to expendable part, weight is larger because burning floating, and the variation of material hammer weight will lead to the variation that downward drag torque loads,
The pollution of its lubricating oil and gear wear etc. also have an impact load after transmission system long time running simultaneously, this results in electricity
Dynamic stock rod uses unstable；3, wire cable rupture.Electric sounding rod uses reducer with big speed ratio, and braking moment is larger and using rigid
Property braking, the braking under running at high speed is easy to cause wire cable rupture；4, electric sounding rod operating cost is big.Electric sounding rod speed reducer
Using thin oil lubricant, needs thin oil system persistently to injection thin oil in decelerating chassis body and recycle extra thin oil, use process
The consumption of middle lubricating oil and electric energy is huge；5, electric sounding rod investment is big.Electric sounding rod uses variable-frequency governor, speed regulating motor, subtracts
Fast machine simultaneously needs thin oil lubricating equipment investment big.
Summary of the invention
It is an object of the invention to overcome the above-mentioned prior art, providing one kind at low cost, debugging convenience, safety can
The furnace roof stock rod hydraulic control device and method lean on, to run smoothly.
In order to achieve the above objectives, the present invention adopts the following technical scheme:
A kind of furnace roof stock rod hydraulic control device, comprising:
Proportional reversing valve uses control hydraulic flow to control the forward direction of hydraulic motor, reversely rotate, brakes and turn
Speed；
Hydraulic motor controls the steering, braking and revolving speed of roller for driving roller to rotate；
Roller carries out the measurement and real time monitoring of material position height when blast furnace ironmaking, goes back on roller for drive material hammer movement
Equipped with encoder；
Encoder for measuring the rotation data of the roller, and transfers data to and controls PLC in blast furnace；
PLC is controlled in blast furnace, for issuing command signal to proportional reversing valve.
Further, winding wire ropes on the roller, the end binder hammer of wirerope.
Further, steel wire rope groove is equipped on the outer circumference surface of roller, the wirerope one ends wound is in steel wire rope groove
In, other end binder hammer.
Further, the wirerope is substituted using chain.
Further, the roller is connected by drum shaft with hydraulic motor, and encoder is arranged on drum shaft.
Further, the hydraulic motor, which is equipped with, mentions ruler oil inlet A, braking oil inlet B and puts ruler oil inlet C；It is described
It mentions ruler oil inlet A and braking oil inlet B is communicated with proportional reversing valve, put ruler oil inlet C and communicated with fuel tank.
A method of the furnace roof stock rod hydraulic control device is controlled, is included the following steps,
S1: PLC is controlled in blast furnace to proportional reversing valve sending and puts ruler command signal, furnace roof stock rod starts to put ruler；
S2: whether the material hammer lowering velocity for judging that encoder detects exceeds the speed limit, if hypervelocity, proportional reversing valve is according to blast furnace
The flow of the instruction control hydraulic oil of middle control PLC, encoder continue the lowering velocity of real-time detecting material hammer, control proportional reversing valve
The uninterrupted of hydraulic oil；
S3: judging whether material hammer reaches charge level, if reaching charge level, downward tractive force disappears, and roller and hydraulic motor stop
Rotation stop is dynamic, then material-level measure success executes step S4, otherwise continues to track；
S4: PLC is controlled in blast furnace to proportional reversing valve sending and proposes ruler command signal, furnace roof stock rod starts to mention ruler；
S5: the material hammer for judging that encoder detects mentions whether ruler speed exceeds the speed limit, if hypervelocity, proportional reversing valve is according to blast furnace
The flow of the instruction control hydraulic oil of middle control PLC, encoder continuation real-time detecting material hammer propose ruler speed, control proportional reversing valve
The uninterrupted of hydraulic oil；
S6: after material hammer reaches position of readiness, control PLC proposes ruler command signal to proportional reversing valve sending and disconnects in blast furnace, into
Enter standby mode.
Compared with prior art, the invention has the following advantages:
The present invention drives roller using hydraulic motor, realizes the forward direction of hydraulic motor by proportional reversing valve, reversely rotates,
Putting ruler, mentioning ruler and material-level measure movement for material hammer, easy to use, safety are completed in braking and the control of speed.By using ratio
The flow control of reversal valve carries out the control of speed, has cut off influence of the load variation to speed, hydraulic stock rod is made to run smoothly,
And used proportional reversing valve only needs two analog input parameters of adjustment, it is convenient to debug；In addition, the present invention is existing using furnace roof
The original parts such as some hydraulic systems substitution frequency-variable controller, speed regulating motor, speed reducer, greatly reduce stock rod operation and investment at
This, and braked by using flexible hydraulic, reduce equipment damage and accident caused by wire cable rupture.Further, furnace roof liquid
Pressure stock rod, which uses, controls PLC (PLC is controlled in blast furnace as blast furnace existing equipment) in proportional reversing valve, hydraulic motor, encoder and blast furnace
Closed-loop control is realized, the speed for the roller that will test by encoder, which is input in blast furnace, controls PLC, and PLC root is controlled in blast furnace
The data for being output to the end a, b of proportional reversing valve are calculated according to speed input parameter, proportional reversing valve is controlled according to a, b end data
Hydraulic fluid flow rate, hydraulic fluid flow rate size control the revolving speed of hydraulic motor, thus realize the real-time closed-loop control of stock rod speed, it can
Mention high control precision.Further, using material hammer, traction eliminates plugging power consumption, standby position noenergy downwards comprehensively
Loss.
Detailed description of the invention
Fig. 1 is furnace roof stock rod hydraulic control device structural schematic diagram of the present invention；
Wherein: 1 be proportional reversing valve, 2 be hydraulic motor, 3 be roller, 4 be encoder, 5 be material hammer, A be propose ruler oil inlet
Mouth, B are braking oil inlet, C is to put ruler oil inlet.
Specific embodiment
The invention will be described in further detail with reference to the accompanying drawing:
Referring to Fig. 1, a kind of furnace roof stock rod hydraulic control device, comprising:
Proportional reversing valve 1 uses control hydraulic flow to control the forward direction of hydraulic motor 2, reversely rotate, brakes and turn
Speed；
Hydraulic motor 2 controls steering, braking and the revolving speed of roller 3, the roller 3 passes through for driving roller 3 to rotate
Drum shaft is connected with hydraulic motor 2；The hydraulic motor 2, which is equipped with, to be mentioned ruler oil inlet A, braking oil inlet B and puts ruler oil inlet
C；It is described mention ruler oil inlet A and braking oil inlet B communicated with proportional reversing valve 1, put ruler oil inlet C and communicated with fuel tank；
Roller 3 carries out the measurement and real time monitoring of material position height when blast furnace ironmaking for driving 5 movement of material hammer；In roller
3 outer circumference surface is equipped with steel wire rope groove, and wirerope one ends wound is in steel wire rope groove, other end binder hammer 5, on roller 3
It is additionally provided with encoder 4；
Encoder 4 is arranged on the drum shaft of roller 3, for measuring the rotation data of the roller 3, and data is transmitted
PLC is controlled into blast furnace；
PLC is controlled in blast furnace, for issuing command signal to proportional reversing valve 1.
A method of the furnace roof stock rod hydraulic control device is controlled, is included the following steps,
S1: PLC is controlled in blast furnace to the sending of proportional reversing valve 1 and puts ruler command signal, furnace roof stock rod starts to put ruler；
S2: judging that the material that encoder 4 detects hammers whether 5 lowering velocities exceed the speed limit into shape, if hypervelocity, 1 basis of proportional reversing valve
The flow of the instruction control hydraulic oil of PLC is controlled in blast furnace, encoder 4 continues the lowering velocity of real-time detecting material hammer 5, controls ratio
The uninterrupted of 1 hydraulic oil of reversal valve；
S3: judging whether material hammer 5 reaches charge level, if reaching charge level, downward tractive force disappears, roller 3 and hydraulic motor 2
It stops operating, then material-level measure success executes step S4, otherwise continues to track；
S4: PLC is controlled in blast furnace to the sending of proportional reversing valve 1 and proposes ruler command signal, furnace roof stock rod starts to mention ruler；
S5: the material hammer 5 for judging that encoder 4 detects mentions whether ruler speed exceeds the speed limit, if hypervelocity, 1 basis of proportional reversing valve
The flow of the instruction control hydraulic oil of PLC is controlled in blast furnace, the continuation real-time detecting material of encoder 4 hammer 5 proposes ruler speed, controls ratio
The uninterrupted of 1 hydraulic oil of reversal valve；
S6: after material hammer 5 reaches position of readiness, control PLC proposes ruler command signal to the sending of proportional reversing valve 1 and disconnects in blast furnace,
Into standby mode.
Working principle:
When putting ruler, proportion electro-magnet a end input signal of the PLC to proportional reversing valve 1 is controlled in blast furnace, pressure oil passes through P mouthfuls
Enter braking oil inlet B by proportional reversing valve 1, the braking of hydraulic motor 2 is opened, and material hammer 5 drives roller 3 under Gravitative Loads
And hydraulic motor 2 rotates, the ruler oil inlet C of putting of hydraulic motor 2 passes through fuel tank oil suction at this time, mentions ruler oil inlet A and is changed by ratio
To 1 oil return of valve, the flow of oil return is controlled by controlling PLC in blast furnace to the input signal at 1 end proportion electro-magnet a of proportional reversing valve
System, by controlling the control for proposing the realization of ruler oil inlet A return flow and putting ruler speed, after 5 contact charge level of material hammer, downward tractive force
It disappears, roller 3 and hydraulic motor 2 stop operating, material-level measure success.
PLC is controlled when material position real-time detection, in blast furnace continues input signal, material to the end proportion electro-magnet a of proportional reversing valve 1
Hammer 5 will follow charge level to complete real-time monitoring movement.After reaching setting position, the input signal at the end proportion electro-magnet a is disconnected, and mentions ruler
Oil inlet A, braking oil inlet B oil circuit are cut off, and brake, stock rod stops real-time detection；
When mentioning ruler, proportion electro-magnet b end input signal of the PLC to proportional reversing valve 1 is controlled in blast furnace, pressure oil passes through P mouthfuls
Enter by proportional reversing valve 1 and mention ruler oil inlet A and braking oil inlet B, the braking of hydraulic motor 2 is opened, and ruler oil inlet A is being mentioned
Hydraulic motor 2 and roller 3, which rotate backward, under the action of pressure oil starts to mention ruler, and hydraulic oil is returned to by putting ruler oil inlet C at this time
Fuel tank, the control for mentioning ruler oil inlet A flow are controlled by the signal at the end input proportion electro-magnet b, propose ruler speed to realize
Control reaches the signal disconnection at the input end proportion electro-magnet b after position of readiness, the oil circuit for mentioning ruler oil inlet A, braking oil inlet B
It is cut off, brake stock rod stops, and entrance is standby.
The closed-loop control of furnace roof stock rod hydraulic control device is by proportional reversing valve 1, hydraulic motor 2, encoder 4 and blast furnace
PLC composition (it is blast furnace existing equipment that PLC is controlled in blast furnace) is controlled, the speed for the roller 3 that encoder 4 will test is input in blast furnace
PLC is controlled, control PLC calculates the data for being output to the end a, b of proportional reversing valve 1 according to speed input parameter in blast furnace, and ratio is changed
Hydraulic fluid flow rate is controlled according to a, b end data to valve 1, hydraulic fluid flow rate size controls the revolving speed of hydraulic motor 2, to realize spy
The real-time closed-loop of ruler speed controls.
In conclusion the present invention carries out the control in direction and flow by using proportional reversing valve 1, pass through hydraulic motor 2
Roller 3 is driven to realize the up and down motion of material hammer 5, the measurement and real time monitoring of material position when completing blast furnace ironmaking；Further, furnace
It pushes up stock rod hydraulic control device and uses the technologies such as hydraulic-driven, flow velocity control, closed-loop system, there is low cost, debugging
It is convenient, run smoothly, securely and reliably, save environmental protection the features such as.
Claims (6)
1. a kind of furnace roof stock rod hydraulic control device characterized by comprising
Proportional reversing valve (1) uses control hydraulic flow to control the forward direction of hydraulic motor (2), reversely rotate, brakes and turn
Speed；
Hydraulic motor (2) controls steering, braking and the revolving speed of roller (3) for driving roller (3) to rotate；
Roller (3) carries out the measurement and real time monitoring of material position height when blast furnace ironmaking, roller for driving material hammer (5) movement
(3) encoder (4) are additionally provided on；
Encoder (4) for measuring the velocity of rotation data of the roller (3), and transfers data to and controls PLC in blast furnace；
PLC is controlled in blast furnace, for issuing command signal to proportional reversing valve (1)；
The hydraulic motor (2), which is equipped with, to be proposed ruler oil inlet (A), braking oil inlet (B) and puts ruler oil inlet (C)；It is described to mention ruler
Oil inlet (A) and braking oil inlet (B) are communicated with proportional reversing valve (1), are put ruler oil inlet (C) and are communicated with fuel tank.
2. a kind of furnace roof stock rod hydraulic control device as described in claim 1, which is characterized in that wound on the roller (3)
The end binder of wirerope, wirerope hammers (5) into shape.
3. a kind of furnace roof stock rod hydraulic control device as claimed in claim 2, which is characterized in that the excircle in roller (3)
Face is equipped with steel wire rope groove, and for the wirerope one ends wound in steel wire rope groove, other end binder hammers (5) into shape.
4. a kind of furnace roof stock rod hydraulic control device as claimed in claim 2, which is characterized in that the wirerope uses chain
Substitution.
5. a kind of furnace roof stock rod hydraulic control device as described in claim 1, which is characterized in that the roller (3) passes through rolling
Cylinder axis is connected with hydraulic motor (2), and encoder (4) is arranged on drum shaft.
6. a kind of method for controlling furnace roof stock rod hydraulic control device as described in claim 1, which is characterized in that including as follows
Step,
S1: PLC is controlled in blast furnace to proportional reversing valve (1) sending and puts ruler command signal, furnace roof stock rod starts to put ruler；
S2: whether material hammer (5) lowering velocity for judging that encoder (4) detects exceeds the speed limit, if hypervelocity, proportional reversing valve (1) root
According to the flow for the instruction control hydraulic oil for controlling PLC in blast furnace, encoder (4) continues the lowering velocity of real-time detecting material hammer (5), control
The uninterrupted of proportional reversing valve (1) hydraulic oil processed；
S3: judging whether material hammer (5) reaches charge level, if reaching charge level, downward tractive force disappears, roller (3) and hydraulic motor
(2) it stops operating, then material-level measure success executes step S4, otherwise continues to track；
S4: PLC is controlled in blast furnace to proportional reversing valve (1) sending and proposes ruler command signal, furnace roof stock rod starts to mention ruler；
S5: the material hammer (5) for judging that encoder (4) detects mentions whether ruler speed exceeds the speed limit, if hypervelocity, proportional reversing valve (1) root
According to the flow for the instruction control hydraulic oil for controlling PLC in blast furnace, encoder (4) continuation real-time detecting material hammer (5) proposes ruler speed, control
The uninterrupted of proportional reversing valve (1) hydraulic oil processed；
S6: after material hammer (5) reaches position of readiness, control PLC proposes ruler command signal to proportional reversing valve (1) sending and disconnects in blast furnace,
Into standby mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610934224.9A CN106315438B (en) | 2016-10-31 | 2016-10-31 | A kind of furnace roof stock rod hydraulic control device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610934224.9A CN106315438B (en) | 2016-10-31 | 2016-10-31 | A kind of furnace roof stock rod hydraulic control device and method |
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| Publication Number | Publication Date |
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| CN106315438A CN106315438A (en) | 2017-01-11 |
| CN106315438B true CN106315438B (en) | 2019-01-15 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106115522B (en) * | 2016-08-31 | 2018-11-23 | 中钢集团西安重机有限公司 | A kind of furnace roof stock rod hydraulic control device and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4264059A (en) * | 1980-03-12 | 1981-04-28 | Victor Benatar | Condition responsive control means for use in discharging powdered reagent into a pool of molten metal |
| JPS598996Y2 (en) * | 1980-06-16 | 1984-03-21 | 日本鋼管株式会社 | Multi-point simultaneous sounding device |
| DE4012816A1 (en) * | 1990-04-21 | 1991-10-24 | Gutehoffnungshuette Man | PLUMB BODY DEVICE FOR DETERMINING THE BOTTOM HEIGHT IN A SHAFT OVEN |
| CN1329529C (en) * | 2001-03-26 | 2007-08-01 | 金卫民 | Balancing and speed stabilizing device of test rod |
| CN201276577Y (en) * | 2008-09-28 | 2009-07-22 | 中冶南方工程技术有限公司 | Compact vertical stock rod |
| CN102021258A (en) * | 2009-09-22 | 2011-04-20 | 上海梅山钢铁股份有限公司 | Mud beating amount detector of hydraulic mud gun |
| CN102226707B (en) * | 2011-03-30 | 2013-03-27 | 唐山钢铁集团微尔自动化有限公司 | Material level measuring device of material bin |
| CN103305646A (en) * | 2013-05-21 | 2013-09-18 | 河北钢铁股份有限公司唐山分公司 | Sounding rod debugging device for determining datum point of blast-furnace charge level and debugging and positioning method of device |
| CN203360473U (en) * | 2013-05-21 | 2013-12-25 | 河北钢铁股份有限公司唐山分公司 | Stock rod debugging device capable of determining reference point of blast furnace charge level |
| CN103911476A (en) * | 2014-03-20 | 2014-07-09 | 江苏永钢集团有限公司 | Detection apparatus of blast furnace front mud ramming quantity and control method |
| CN106115522B (en) * | 2016-08-31 | 2018-11-23 | 中钢集团西安重机有限公司 | A kind of furnace roof stock rod hydraulic control device and method |
| CN206051388U (en) * | 2016-08-31 | 2017-03-29 | 中钢集团西安重机有限公司 | A kind of furnace top hydraulic stock rod |
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