CN205243985U - Hot base pressure hydraulic control system of fan -shaped section drive roller of slab caster - Google Patents
Hot base pressure hydraulic control system of fan -shaped section drive roller of slab caster Download PDFInfo
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- CN205243985U CN205243985U CN201520900797.0U CN201520900797U CN205243985U CN 205243985 U CN205243985 U CN 205243985U CN 201520900797 U CN201520900797 U CN 201520900797U CN 205243985 U CN205243985 U CN 205243985U
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Abstract
The utility model discloses a hot base pressure hydraulic control system of fan -shaped section drive roller of slab caster, through increasing board -like overflow valve on the guide pressure control oil circuit of tee bend relief pressure valve, and realize the switching of two oil circuits of proportion overflow valve and board -like overflow valve through the two -position three way that increases newly electricity magnetic ball seat valve, and then the switching between hot base pressure of realization work and the hot base pressure of accident, it is spacing to need not manual adjustment accident pressure machinery promptly, avoid the people to be misoperation, reduce the component wearing and tearing, hot base pressure control oil circuit piece has been simplified again, moreover, the steam generator is simple in structure, high reliability.
Description
Technical field
The utility model relates to Ferrous Metallurgy slab caster casting conductance to control technology field, relates in particular to onePlant the hot base pressure of fan-shaped sections of slab continuous driven roller hydraulic control system.
Background technology
Ferrous Metallurgy slab caster is that liquid molten steel is cooling by continuous casting mold in crystallizer and fan-shaped sectionThe final process that forms solid-state steel billet. In casting cycle, the driving force of strand is by the drive roller sets of every fan-shaped sectionProvide, drive roller sets provides downforce to make driven roller and casting billet surface form stiction by hydraulic cylinder and leadsDraw strand to the ejection of casting direction, this hydraulic pressure is the hot base pressure of driven roller.
The setting value of the hot base pressure of slab fan shaped section driving roller need to be entered according to the casting blank cross-section size of casting machine castingRow is set, and need in casting cycle, carry out dynamically accurately control to hot base pressure according to strand casting process simultaneouslySystem. The hot base pressure of the slab fan-shaped section control principle that Present Domestic generally adopts is that two stage pressures regulate: hot baseSystem pressure is decompressed to needed hot base pressure by three-way pressure reducing valve 1 on pressure valve platform principal pressure oil circuit,Three-way pressure reducing valve 1 is by pilot pressure oil circuit control, and passing ratio overflow valve 2, as pilot valve, regulates threewayPressure-reducing valve 1 output pressure. Proportional pressure control valve 2 is realized hot base with proportional amplifier 3 by remote PLC controlDynamically accurately controlling of pressure. When hot base control pressurer system breaks down or needs when the power-off of control valve platformProvide a constant hot base pressure to ensure the normal ejection of casting machine under accident condition to fan shaped section driving roller, conventionallyThere are two kinds of design bills:
1, on proportional pressure control valve 2 valve bodies, the mechanical position limitation of a thimble as proportional pressure control valve 2 spools is installed,Avoid proportional pressure control valve 2 spools in the time that equipment breaks down to get back to raw bits, instant heating base Output pressure is 0, protectsCard system has low-heat base Output pressure. Advantage: control valve platform is simple in structure, without increase control loop andHydraulic Elements; Shortcoming: in the time that changing, casting template section needs manual adjustment mechanical position limitation setting accident pressure,Comparative example relief valve spool and valve head cause wearing and tearing, affect element service life, simultaneously in adjustment process easilyCause human operational error's fault.
2, on hot base pressure-control valve platform, increase by a decompression bypass, the output of decompression bypass is adjusted to a perseveranceConstant-pressure (the hot base pressure of accident), then realize hot base pressure and the hot base pressure of accident by controlling solenoid directional control valveThe switching of oil circuit. Advantage: without artificial on-the-spot adjustment accident pressure, avoid human operational error, reduce unitPart wearing and tearing; Shortcoming: oil circuit control block is long-pending large, and cost is high.
Utility model content
For solving the problems of the technologies described above, the utility model provides a kind of fan-shaped sections of slab continuous driven roller heatBase pressure hydraulic control system, comprising:
The three-way pressure reducing valve of two-stage pressure-regulating control system principal pressure;
On the pilot pressure oil circuit control of described three-way pressure reducing valve, be provided with board-like overflow valve;
Two-position three-way electromagnetic valve with ball seat, is connected between described three-way pressure reducing valve and described board-like overflow valve;
Proportional pressure control valve, and described board-like overflow valve is connected in parallel on the pilot pressure control oil of described three-way pressure reducing valveLu Shang;
Wherein, in normal operation, the Electrical heads of described two-position three-way electromagnetic valve with ball seat obtains electric, oil circuitBe switched to described proportional pressure control valve and carry out pilot control; Be in an emergency and need accident ejection when slab waters steelTime, by the Electrical heads power down of described two-position three-way electromagnetic valve with ball seat, make oil circuit be switched to described board-like overflowValve carries out pilot control.
Preferably, on described proportional pressure control valve, be provided with proportional amplifier.
By one or more technical scheme of the present utility model, the utlity model has following beneficial effectOr advantage:
The utility model provides the hot base pressure of a kind of fan-shaped sections of slab continuous driven roller hydraulic control system,On pilot pressure oil circuit control by three-way pressure reducing valve, increase board-like overflow valve, and by two that newly increaseThreeway electromagnetic ball seat valve is realized the switching of proportional pressure control valve and two oil circuits of board-like overflow valve, and then realizes workSwitching between the hot base pressure of hot base pressure and accident, spacing without manual adjustment accident press, keep awayExempt from human operational error, reduce component abrasion, simplified again hot base pressure oil circuit control piece, simple in structure,Reliability is high.
Brief description of the drawings
The hot base pressure of the fan-shaped sections of slab continuous driven roller hydraulic pressure control that Fig. 1 provides for the utility model embodimentThe schematic diagram of system processed;
The hot base pressure of the fan-shaped sections of slab continuous driven roller hydraulic pressure control that Fig. 2 provides for the utility model embodimentThe structure diagram of system processed.
Detailed description of the invention
In order to make the utility model the technical staff in the technical field more clearly understand the utility model,Below in conjunction with accompanying drawing, by specific embodiment, technical solutions of the utility model are described in detail.
Referring to Fig. 1-Fig. 2, the utility model has adopted the scheme of the hot base pressure of pilot stage switching controls, specifically comesSay, the scheme that the utility model adopts is as follows:
To the elder generation of the hot base pressure of slab fan shaped section driving roller two-stage pressure-regulating control system principal pressure three-way pressure reducing valve 1On pilot power oil circuit control, increase a bypass (mounting plate type overflow valve 5), by the two-position three way electricity newly increasingMagnetic valve with ball seat 4 is realized the switching of proportional pressure control valve 2 and 5 two oil circuits of board-like overflow valve.
Specifically, system of the present utility model comprises:
The three-way pressure reducing valve 1 of two-stage pressure-regulating control system principal pressure;
On the pilot pressure oil circuit control of described three-way pressure reducing valve 1, be provided with board-like overflow valve 5, board-like overflow valve5 can carry out pilot control, and now hot base pressure is no longer subject to remote auto control, changes into by board-like overflow valve5 steady state values that regulate, guarantee fan shaped section driving roller tractive force under accident ejection state. Can regulate in addition board-likeHot base pressure output value is adjusted to the hot base force value of accident by overflow valve 5.
Two-position three-way electromagnetic valve with ball seat 4, is connected between described three-way pressure reducing valve 1 and described board-like overflow valve 5,For realizing the switching of proportional pressure control valve 2 and 5 two oil circuits of board-like overflow valve.
Proportional pressure control valve 2, and board-like overflow valve 5 is connected in parallel on the pilot pressure control oil of described three-way pressure reducing valve 1Lu Shang;
In addition, on described proportional pressure control valve 2, be provided with proportional amplifier 3.
Introduce concrete operation principle below:
In normal operation, two-position three-way electromagnetic valve with ball seat 4 Electrical heads often-have-electricity, oil circuit is switched to ratioExample overflow valve 2 carries out pilot control; When watering steel, slab is in an emergency while needing accident ejection, master-control roomBe switched to two-position three-way electromagnetic valve with ball seat 4 Electrical heads power down after accident ejection pattern, oil circuit is switched to board-like overflowingStream valve 5 carries out pilot control, and now hot base pressure is no longer subject to remote auto control, changes into by board-like overflowThe steady state value that valve 5 regulates, guarantees fan shaped section driving roller tractive force under accident ejection state. Regulate board-like overflowHot base pressure output value is adjusted to the hot base force value of accident by valve 5.
By one or more technical scheme of the present utility model, the utlity model has following beneficial effectOr advantage:
The utility model provides the hot base pressure of a kind of fan-shaped sections of slab continuous driven roller hydraulic control system,On pilot pressure oil circuit control by three-way pressure reducing valve, increase board-like overflow valve, and by two that newly increaseThreeway electromagnetic ball seat valve is realized the switching of proportional pressure control valve and two oil circuits of board-like overflow valve, and then realizes workSwitching between the hot base pressure of hot base pressure and accident, spacing without manual adjustment accident press, keep awayExempt from human operational error, reduce component abrasion, simplified again hot base pressure oil circuit control piece, simple in structure,Reliability is high.
Although described preferred embodiment of the present utility model, once one of ordinary skilled in the artObtain the basic creative concept of cicada, can make other change and amendment to these embodiment. So, instituteAttached claim be intended to be interpreted as comprising preferred embodiment and fall into the utility model scope all changes andAmendment.
Obviously, those skilled in the art can carry out various changes and modification and not depart from the utility modelSpirit and scope of the present utility model. Like this, if these amendments of the present utility model and modification belong to this realityWithin scope by novel claim and equivalent technologies thereof, the utility model is also intended to comprise these changesWith modification interior.
Claims (2)
1. the hot base pressure of a fan-shaped sections of slab continuous driven roller hydraulic control system, is characterized in that, bagDraw together:
The three-way pressure reducing valve of two-stage pressure-regulating control system principal pressure;
On the pilot pressure oil circuit control of described three-way pressure reducing valve, be provided with board-like overflow valve;
Two-position three-way electromagnetic valve with ball seat, is connected between described three-way pressure reducing valve and described board-like overflow valve;
Proportional pressure control valve, and described board-like overflow valve is connected in parallel on the pilot pressure control oil of described three-way pressure reducing valveLu Shang;
Wherein, in normal operation, the Electrical heads of described two-position three-way electromagnetic valve with ball seat obtains electric, oil circuitBe switched to described proportional pressure control valve and carry out pilot control; Be in an emergency and need accident ejection when slab waters steelTime, by the Electrical heads power down of described two-position three-way electromagnetic valve with ball seat, make oil circuit be switched to described board-like overflowValve carries out pilot control.
2. the system as claimed in claim 1, is characterized in that, on described proportional pressure control valve, is provided with ratioAmplifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520900797.0U CN205243985U (en) | 2015-11-11 | 2015-11-11 | Hot base pressure hydraulic control system of fan -shaped section drive roller of slab caster |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520900797.0U CN205243985U (en) | 2015-11-11 | 2015-11-11 | Hot base pressure hydraulic control system of fan -shaped section drive roller of slab caster |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205243985U true CN205243985U (en) | 2016-05-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520900797.0U Active CN205243985U (en) | 2015-11-11 | 2015-11-11 | Hot base pressure hydraulic control system of fan -shaped section drive roller of slab caster |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205243985U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108213371A (en) * | 2018-01-02 | 2018-06-29 | 邯郸钢铁集团有限责任公司 | A kind of method of the dynamic adjustment red base pressure of slab caster |
| CN111590042A (en) * | 2020-06-02 | 2020-08-28 | 芜湖新兴铸管有限责任公司 | Hydraulic control device and method and continuous casting ladle nozzle control equipment |
-
2015
- 2015-11-11 CN CN201520900797.0U patent/CN205243985U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108213371A (en) * | 2018-01-02 | 2018-06-29 | 邯郸钢铁集团有限责任公司 | A kind of method of the dynamic adjustment red base pressure of slab caster |
| CN108213371B (en) * | 2018-01-02 | 2019-10-29 | 邯郸钢铁集团有限责任公司 | A kind of method of the dynamic adjustment red base pressure of slab caster |
| CN111590042A (en) * | 2020-06-02 | 2020-08-28 | 芜湖新兴铸管有限责任公司 | Hydraulic control device and method and continuous casting ladle nozzle control equipment |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |