CN106312038A - Steel ladle long nozzle safety control method - Google Patents
Steel ladle long nozzle safety control method Download PDFInfo
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- CN106312038A CN106312038A CN201510368712.3A CN201510368712A CN106312038A CN 106312038 A CN106312038 A CN 106312038A CN 201510368712 A CN201510368712 A CN 201510368712A CN 106312038 A CN106312038 A CN 106312038A
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- long nozzle
- valve
- hydraulic cylinder
- mechanical hand
- ladle
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Abstract
The invention provides a steel ladle long nozzle safety control method. The method comprises the steps that a mechanical and hydraulic combination driving device comprising a supporting column, a mechanical arm, a hydraulic cylinder, a manual ball valve, counter weights, a sequence valve, a reversing valve I and a reversing valve II is manufactured; a long nozzle is pressed onto a down nozzle of a steel ladle tightly all the time through the counter weights at the rear end of the mechanical arm; the reversing valve I and the reversing valve II control the front portion of the mechanical arm to descend through the hydraulic cylinder, so that the long nozzle at the front end disengages the down nozzle; two cavities of the hydraulic cylinder communicate with each other to guarantee that the mechanical arm to act accordingly; at overpressure, the sequence valve automatically enables the two cavities of the hydraulic cylinder to communicate with each other to realize the reliability of following actions; and when a hydraulic system fails, actions of the mechanical arms are controlled through the manual ball valve. By means of the method, the accidents of molten steel splashing caused by failures, faulty operation and the like of the hydraulic system can be effectively avoided, and accordingly security control over the long nozzle is realized.
Description
Technical field
The invention belongs to technical field of mechanical equipment, particularly relate to the method for controlling security of a kind of ladle long nozzle.
Background technology
Qualified molten steel transports big bag turntable or transverse-moving trolley to through ladle, injects tundish through long nozzle, then notes through submersed nozzle
Entering crystallizer, the use of tundish achieves the benefit that multiple tank even waters.The effect of long nozzle is to be implemented in combination with molding casting with Argon,
Prevent secondary oxidation of steel and nitrogen pick-up.So long nozzle can not only be with ladle knee-action and it is necessary to be pressed on molten steel all the time
Under tank on the mouth of a river, to ensure sealing effectiveness.Long water gap mechanical arm is the special equipment realizing this function, its action whether reliable,
Convenient, not only directly affect production operation, also affect the personal safety of operator, i.e. in casting process, if long water
Mouth disengages with the mouth of a river under ladle, and the excessive splash of molten steel can cause machine to ruin the accidents such as people's wound.
At present, long nozzle typically uses hydraulic cylinder control mode, and its particular make-up includes: mechanical hand, hydraulic cylinder, counterbalance valve,
Choke valve, overflow valve, hand-operated direction valve, repairing check valve and decline check valve.Control method is:
1, long nozzle elevating control: long nozzle lifting controls by the commutation of hand-operated direction valve, hand-operated direction valve band memory function,
There are 3 valve positions, spool can be made to be parked on any valve position by handle, it is achieved rise, decline, stop 3 actions.
2, long nozzle holding pressure control: in casting process, long nozzle must be pressed under ladle on the mouth of a river all the time, and this system is passed through
Accumulator is set to ensure that hydraulic cylinder cavity of resorption (vertical motion) remains pressure, it is achieved long nozzle is pressed under ladle all the time
On the mouth of a river.
3, long nozzle servo antrol: during rising, hand-operated valve is in right position, the hydraulic control one-way valve unlatching on hydraulic cylinder epicoele return line,
Hydraulic cylinder cavity of resorption pressure oil is in the state of directly feeding, and return line is unimpeded simultaneously；During decline, hand-operated valve is still at right position, hydraulic pressure
Cylinder enters, return line is the most unimpeded, and power source becomes the descending active force of ladle, and overcome hydraulic system counteracting force (on
Lift) time cavity pressure reaches certain value under hydraulic cylinder, counterbalance valve (fuel feeding) is opened, and declines closed check valve, through fixed restriction
Hole oil return, hydraulic cylinder epicoele hydraulic oil supplements through repairing check valve.
I.e. in servomechanism process, hand-operated valve is in same position all the time, and setting completed for counterbalance valve, and system automatically controls without manually
Operation, only completes after long nozzle docks with the mouth of a river under ladle, hand-operated valve is being got to rising threshold position.
But also there is following hidden danger in hydraulic cylinder control mode:
1, when power breakdown such as leakage, accumulation of energy, detecting element lost efficacy, mechanical hand easily disengages, and overflow steel.
2, counterbalance valve stress disorder, declines pressure in servomechanism process and raises, may damage mouth of a river sealing member by pressure, and molten steel oxidation produces matter
Amount accident.
3, counterbalance valve stress disorder, declines hypertonia in servomechanism process and can damage or damage robot support mechanism, if supported
Mechanism damages and is not enough to support long nozzle, and long nozzle will be disengaged from ladle nozzle, the steel that overflows occurs.
4, valve element jam, overflow valve fault, hydraulic cylinder epicoele cannot oil return, rising cannot be servo-actuated, long nozzle depart from ladle
The lower mouth of a river and wear steel accident.
Summary of the invention
The present invention provides a kind of ladle long nozzle method of controlling security, its object is to avoid because of hydraulic system fault, maloperation etc.
The molten steel splash accident that situation causes, it is achieved the safe and reliable control of ladle long nozzle.
To this end, the solution that the present invention is taked is:
A kind of ladle long nozzle method of controlling security, it is characterised in that:
Design and produce mechanical hydraulic composite driving device:
Combined driving device includes pillar, mechanical hand, hydraulic cylinder, manual ball valve, counterweight, sequence valve, reversal valve I and commutation
Valve II, it is anterior that pillar upper end hydraulic cylinder is hinged on mechanical hand, and mechanical hand rear end is provided with counterweight, and mechanical hand is movably connected on pillar
Portion, reversal valve I and reversal valve II are connected with hydraulic cylinder A, B chamber respectively, and between reversal valve I and reversal valve II, short circuit has respectively
Manual ball valve and sequence valve；
Long nozzle security control:
(1) vertical motion realizes: utilizes mechanical hand rear end counterweight, makes mechanical hand front end long nozzle remain power upwards, will
Long nozzle is pressed on collector nozzle of ladle all the time；Meanwhile, counterweight amount is increased and decreased as required, it is achieved under hydraulic system fault state
Manual operation；
(2) down maneuver realizes: reversal valve I, reversal valve II control mechanical hand front portion by hydraulic cylinder and decline, and make the length of front end
The mouth of a river disengages the lower mouth of a river；
(3) servomechanism process controls: hydraulic cylinder two chamber intercommunication, it is ensured that action followed by mechanical hand；Manual ball valve is utilized to realize accident shape
Action is followed under state；
(4) overload protection: during superpressure, sequence valve turns on hydraulic cylinder two chamber automatically, it is achieved follow the reliability of action, and to machine
Tool device is protected；
(5) Non-follow control: when hydraulic system fault cannot come into operation, open the manual ball valve in UNICOM hydraulic cylinder A, B chamber,
Knee-action by manual hand manipulation's mechanical hand；When changing ladle or long nozzle, first reduce balancing weight number, be allowed to apply
Less manpower just can realize the lifting action of mechanical hand, completes to change ladle or long nozzle action, then increases balancing weight number,
Make long nozzle be pressed on ladle filling pipe end, and realize lag function.
Described hydraulic cylinder is uiform section hydraulic cylinder.
The invention have the benefit that
The present invention uses mechanical hydraulic composite driving device, collection safety and convenience and one；Adjusted by counterweight and control long water
Mouthful, it is possible to uptrend is pressed on collector nozzle of ladle to make long nozzle remain；Long nozzle can follow ladle action all the time,
Long nozzle is constant for the active force at the lower mouth of a river, not only contributes to the mouth of a river and seals, and mechanical hand and supporting mechanism thereof are due to stress simultaneously
Keeping constant, its life-span is controlled, it is possible to achieve pre-emptive maintenace.Hydraulic system be only used as disengage long nozzle instrument, thus its
The stability of system does not interferes with the safety of long nozzle；Meanwhile, it is provided with manual ball valve, under hydraulic system fault state,
The operations such as the loadmaster mouth of a river can be completed with Non-follow control machinery hands.Therefore, the present invention can be prevented effectively from due to hydraulic system fault,
The molten steel splash accident that the situations such as maloperation cause, it is achieved the safe and reliable control of ladle long nozzle.
Accompanying drawing explanation
Fig. 1 is mechanical hydraulic composite driving device structural representation.
In figure: reversal valve I 1, pillar 2, mechanical hand 3, long nozzle 4, hydraulic cylinder 5, manual ball valve 6, counterweight 7, sequentially
Valve 8, reversal valve II 9.
Detailed description of the invention
As seen from Figure 1, mechanical hydraulic composite driving device of the present invention, mainly by reversal valve I 1, pillar 2, mechanical hand 3,
Long nozzle 4, hydraulic cylinder 5, manual ball valve 6, counterweight 7, sequence valve 8 and reversal valve II 9 are formed.Pillar 2 upper end hydraulic pressure
Cylinder 5 is hinged on the front portion of mechanical hand 3, and the rear end of mechanical hand 3 is provided with counterweight 7, and mechanical hand 3 is movably connected in the upper of pillar 2
Portion, reversal valve I 1 and reversal valve II 9 are connected with A, B chamber of hydraulic cylinder 5 respectively, between reversal valve I 1 and reversal valve II 9
Short circuit has manual ball valve 6 and sequence valve 8 respectively.
The concrete grammar of long nozzle security control of the present invention, realizes filling pipe end 4 vertical motion mainly by counterweight 7 and compresses merit
Can, realized the decline disengagement action of long nozzle 4 by hydraulic system, manual-operated emergent system is set, it is achieved hydraulic pressure system fault simultaneously
Manual operation under state, it is ensured that the security control of long nozzle 4.
1, vertical motion realizes: utilizes mechanical hand 3 rear end counterweight 7, makes mechanical hand 3 front end long nozzle 4 remain upwards
Power, is pressed on collector nozzle of ladle all the time by long nozzle 4；Meanwhile, the weight of counterweight 7 is increased and decreased as required, it is achieved hydraulic pressure system
Manual operation under system malfunction.
2, down maneuver realizes: reversal valve I 1, reversal valve II 9 control the anterior decline of mechanical hand 3 by hydraulic cylinder 5, before making
The long nozzle 4 of end disengages the lower mouth of a river.
3, servomechanism process controls: 5 liang of chamber intercommunications of hydraulic cylinder, it is ensured that action followed by mechanical hand 3；Manual ball valve 6 is utilized to realize thing
Therefore follow action under state.
4, overload protection: during superpressure, sequence valve 8 turns on 5 liang of chambeies of hydraulic cylinder automatically, it is achieved follow the reliability of action, and right
Machinery is protected.
5, Non-follow control: when hydraulic system fault cannot come into operation, opens the manual ball in A, B chamber of UNICOM's hydraulic cylinder 5
Valve 6, by the knee-action of manual hand manipulation's mechanical hand 3.When changing ladle or long nozzle 4, first reduce counterweight 7 pieces
Number, is allowed to apply less manpower and just can realize the lifting action of mechanical hand 3, completes to change ladle or long nozzle 4 action, so
7 pieces of numbers of rear increase counterweight, make long nozzle 4 be pressed on ladle filling pipe end, and realize lag function.
The detailed process of long nozzle security control of the present invention is:
1, semi-automatic operation: decline reversal valve I 1Y01 and obtain electric with reversal valve II 9Y02, it is achieved long nozzle 4 departs from ladle
The lower mouth of a river；Rising reversal valve I 1Y01 and reversal valve II 9Y02 power-off, long nozzle 4 relies on the leverage of counterweight 7 to rise,
Realize long nozzle 4 to dock with the mouth of a river under ladle；Stop reversal valve I 1Y01 and obtain electric, reversal valve II 9Y02 power-off, it is achieved appoint
Meaning high degree of mechanical hands 3 stops.
2, it is automatically brought into operation: reversal valve I 1Y01 and reversal valve II 9Y02 power-off, long nozzle 4 is pushed down under ladle behind the mouth of a river, held
Row " automatically " operation, long nozzle 4 is pressed under ladle on the mouth of a river under counterweight 7 acts on all the time, rises and then relies on counterweight 7 to make
With, decline by ladle effect, thus realize " servo-actuated " function.
3, manual operation: when hydraulic system breaks down, cuts off hydraulic system, opens the manual ball valve 6 on hydraulic cylinder 5,
Hydraulic control is completely free of by mechanical hand 3；By suitably increasing and decreasing mechanical hand 3 rear end 7 pieces of numbers of counterweight or carrying out manual intervention, can be real
Existing Non-follow control machinery hands 3 continues to produce.
4, overload protection: such as reversal valve fault, 5 times cavity pressures of hydraulic cylinder can be caused in downward servomechanism process drastically to raise, produces
Dangerous.For avoiding this situation, sequence valve 8 is set between hydraulic cylinder 5 upper and lower cavity pipeline, when 5 times cavity pressures of hydraulic cylinder
When reaching a certain setting value, sequence valve 8 is opened, and hydraulic oil returns to hydraulic cylinder 5 epicoele, owing to being uiform section hydraulic cylinder 5, and institute
It is in poised state with oil return.
Claims (2)
1. a ladle long nozzle method of controlling security, it is characterised in that:
Design and produce mechanical hydraulic composite driving device:
Combined driving device includes pillar, mechanical hand, hydraulic cylinder, manual ball valve, counterweight, sequence valve, reversal valve I and commutation
Valve II, it is anterior that pillar upper end hydraulic cylinder is hinged on mechanical hand, and mechanical hand rear end is provided with counterweight, and mechanical hand is movably connected on pillar
Portion, reversal valve I and reversal valve II are connected with hydraulic cylinder A, B chamber respectively, and between reversal valve I and reversal valve II, short circuit has respectively
Manual ball valve and sequence valve；
Long nozzle security control:
(1) vertical motion realizes: utilizes mechanical hand rear end counterweight, makes mechanical hand front end long nozzle remain power upwards, will
Long nozzle is pressed on collector nozzle of ladle all the time；Meanwhile, counterweight amount is increased and decreased as required, it is achieved under hydraulic system fault state
Manual operation；
(2) down maneuver realizes: reversal valve I, reversal valve II control mechanical hand front portion by hydraulic cylinder and decline, and make the length of front end
The mouth of a river disengages the lower mouth of a river；
(3) servomechanism process controls: hydraulic cylinder two chamber intercommunication, it is ensured that action followed by mechanical hand；Manual ball valve is utilized to realize accident shape
Action is followed under state；
(4) overload protection: during superpressure, sequence valve turns on hydraulic cylinder two chamber automatically, it is achieved follow the reliability of action, and to machine
Tool device is protected；
(5) Non-follow control: when hydraulic system fault cannot come into operation, open the manual ball valve in UNICOM hydraulic cylinder A, B chamber,
Knee-action by manual hand manipulation's mechanical hand；When changing ladle or long nozzle, first reduce balancing weight number, be allowed to apply
Less manpower just can realize the lifting action of mechanical hand, completes to change ladle or long nozzle action, then increases balancing weight number,
Make long nozzle be pressed on ladle filling pipe end, and realize lag function.
Ladle long nozzle method of controlling security the most according to claim 1, it is characterised in that described hydraulic cylinder is uiform section
Hydraulic cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510368712.3A CN106312038B (en) | 2015-06-26 | 2015-06-26 | A kind of ladle long nozzle method of controlling security |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510368712.3A CN106312038B (en) | 2015-06-26 | 2015-06-26 | A kind of ladle long nozzle method of controlling security |
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| CN106312038A true CN106312038A (en) | 2017-01-11 |
| CN106312038B CN106312038B (en) | 2018-04-24 |
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| CN201510368712.3A Active CN106312038B (en) | 2015-06-26 | 2015-06-26 | A kind of ladle long nozzle method of controlling security |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107020370A (en) * | 2017-06-05 | 2017-08-08 | 大连华锐重工集团股份有限公司 | Supermatic ladle long nozzle steerable system |
| CN110216260A (en) * | 2019-06-19 | 2019-09-10 | 武汉钢铁有限公司 | The method of Cleanliness of Molten Steel is improved in continuous casting process |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4664135A (en) * | 1984-05-07 | 1987-05-12 | Sanders Associates, Inc. | Pilot valve |
| CN201020530Y (en) * | 2007-03-29 | 2008-02-13 | 上海梅山钢铁股份有限公司 | Multiloop controlled molten steel sack sliding gate hydraulic system |
| CN201841256U (en) * | 2010-10-29 | 2011-05-25 | 江阴兴澄特种钢铁有限公司 | Control device of large-square billet long-water gap operating arm |
| CN202273939U (en) * | 2011-09-26 | 2012-06-13 | 邢立杰 | Drive roll water-cooled electromagnetically-controlled hydraulic cylinder of withdrawing and straightening machine |
| CN103170613A (en) * | 2013-03-08 | 2013-06-26 | 马钢(集团)控股有限公司 | Hydraulic control system for opening and closing of continuous cast bale sliding nozzle |
| CN203221198U (en) * | 2013-04-25 | 2013-10-02 | 韶关市龙润工业技术有限公司 | Manipulator for ladle long nozzle |
-
2015
- 2015-06-26 CN CN201510368712.3A patent/CN106312038B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4664135A (en) * | 1984-05-07 | 1987-05-12 | Sanders Associates, Inc. | Pilot valve |
| CN201020530Y (en) * | 2007-03-29 | 2008-02-13 | 上海梅山钢铁股份有限公司 | Multiloop controlled molten steel sack sliding gate hydraulic system |
| CN201841256U (en) * | 2010-10-29 | 2011-05-25 | 江阴兴澄特种钢铁有限公司 | Control device of large-square billet long-water gap operating arm |
| CN202273939U (en) * | 2011-09-26 | 2012-06-13 | 邢立杰 | Drive roll water-cooled electromagnetically-controlled hydraulic cylinder of withdrawing and straightening machine |
| CN103170613A (en) * | 2013-03-08 | 2013-06-26 | 马钢(集团)控股有限公司 | Hydraulic control system for opening and closing of continuous cast bale sliding nozzle |
| CN203221198U (en) * | 2013-04-25 | 2013-10-02 | 韶关市龙润工业技术有限公司 | Manipulator for ladle long nozzle |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107020370A (en) * | 2017-06-05 | 2017-08-08 | 大连华锐重工集团股份有限公司 | Supermatic ladle long nozzle steerable system |
| CN110216260A (en) * | 2019-06-19 | 2019-09-10 | 武汉钢铁有限公司 | The method of Cleanliness of Molten Steel is improved in continuous casting process |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106312038B (en) | 2018-04-24 |
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