CN205401277U - Nozzle governing hydraulic control system - Google Patents
Nozzle governing hydraulic control system Download PDFInfo
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- CN205401277U CN205401277U CN201620172574.1U CN201620172574U CN205401277U CN 205401277 U CN205401277 U CN 205401277U CN 201620172574 U CN201620172574 U CN 201620172574U CN 205401277 U CN205401277 U CN 205401277U
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Abstract
The utility model discloses a nozzle governing hydraulic control system, including parallelly connected quick return circuit that sets up and return circuit at a slow speed, quick return circuit mainly comprises magenetic exchange valve I, hydraulically controlled check valve I and one -way throttle valve, the return circuit mainly comprises magenetic exchange valve II, hydraulically controlled check valve II, orifice I and orifice II at a slow speed, through quick return circuit and return circuit matched with mode at a slow speed, both improved the reliability of system, shortened the response time of system again, solved the structure that exists simple, reliability good problem inadequately in the current mechanism, have advantages such as constituting simple, low in cost, be suitable for popularization and application.
Description
Technical field
This utility model belongs to metallurgical technical field of hydraulic pressure, relates to a kind of cut-out governing hydraulic control system, regulates the control of device specifically for caster two cold nozzle.
Background technology
Casting billet surface chink and underbead crack are had decisive influence by strand corner temperature and width surface temperature distribution, therefore, according to strand width, can the nozzle control governor gear of step-less adjustment two cold water spray width be widely used to during continuous casting billet produces.
Current nozzle control governor gear mainly adopts motor to drive and hydraulic-driven two ways.The former mechanism is complicated, weight of equipment is big, and keeps in repair relatively difficult；And the latter adopts hydraulic cylinder or hydraulic motor, being connected with nozzle by corresponding mechanism, such type of drive has lightweight, the advantage of easy-maintaining, is current Hot spots for development.But, existing hydraulic drive mechanism there is also that structure is simple not, the imperfect problem of reliability, and for solving the defect that existing mechanism exists, spy of the present invention proposes a kind of simple and reliable hydraulic control system.
Summary of the invention
In view of this, the purpose of this utility model is in that to provide a kind of simple and reliable cut-out governing hydraulic control system.
For reaching above-mentioned purpose, this utility model provides following technical scheme: a kind of cut-out governing hydraulic control system, including the fast loop being arranged in parallel and loop at a slow speed；
Described fast loop is mainly made up of solenoid directional control valve I, hydraulic control one-way valve I and one-way throttle valve, the P mouth of described solenoid directional control valve I, T mouth are connected with outside inflow pipeline, outside oil returning tube respectively, the A mouth of solenoid directional control valve I, B mouth are connected with hydraulic control one-way valve I, described hydraulic control one-way valve I is connected with one-way throttle valve respectively, and one-way throttle valve is connected with the rod chamber of hydraulic cylinder and rodless cavity respectively；
Described loop at a slow speed is mainly made up of solenoid directional control valve II, hydraulic control one-way valve II, throttle orifice I and throttle orifice II, the P mouth of described solenoid directional control valve II, T mouth are connected with outside inflow pipeline, outside oil returning tube respectively, the A mouth of solenoid directional control valve II, B mouth are connected with hydraulic control one-way valve II, and hydraulic control one-way valve II is connected with rod chamber and the rodless cavity of hydraulic cylinder respectively through throttle orifice I and throttle orifice II.
Further, also including sequence valve, described fast loop is connected with the rod chamber of hydraulic cylinder each through sequence valve with loop at a slow speed, and the X mouth of described sequence valve is connected with the rodless cavity of hydraulic cylinder, and the Y mouth of described sequence valve is connected with outside draining pipeline by check valve.
Further, described hydraulic cylinder is provided with Displacement Feedback device.
The beneficial effects of the utility model are in that: (1) is respectively provided with fast loop and loop at a slow speed, have both improve the reliability that system is overall, moreover it is possible to ensure that under any width adjusting scope the response time of adjustment process meets the requirement of process equipment；(2) match with Displacement Feedback device in loop at a slow speed, can ensure nozzle control accuracy in step-less adjustment process under open loop control mode；(3) controlling system cleannes are less demanding, adaptability is good；(4) it is provided with sequence valve in loaded hydraulic cylinder chamber, by setting a fixing back pressure, nozzle control governor gear can be made to run in whole adjustment process more steady；Generally speaking, this Control system architecture composition is simple, cheap, and better reliability.
Accompanying drawing explanation
In order to make the purpose of this utility model, technical scheme and beneficial effect clearly, this utility model provides drawings described below to illustrate:
Fig. 1 is hydraulic schematic diagram of the present utility model.
Detailed description of the invention
Below in conjunction with accompanying drawing, preferred embodiment of the present utility model is described in detail.
As it can be seen, the cut-out governing hydraulic control system in the present embodiment, including the fast loop being arranged in parallel and loop at a slow speed.
Described fast loop is mainly made up of solenoid directional control valve I 1, hydraulic control one-way valve I 2 and one-way throttle valve 3, the P mouth of described solenoid directional control valve I 1, T mouth are connected with outside inflow pipeline, outside oil returning tube respectively, the A mouth of solenoid directional control valve I 1, B mouth are connected with hydraulic control one-way valve I 2, described hydraulic control one-way valve I 2 is connected with one-way throttle valve 3 respectively, and one-way throttle valve 3 is connected with the rod chamber of hydraulic cylinder 4 and rodless cavity respectively.
Described loop at a slow speed is mainly made up of solenoid directional control valve II 5, hydraulic control one-way valve II 6, throttle orifice I 7 and throttle orifice II 8, corresponding and the outside inflow pipeline of the P mouth of described solenoid directional control valve II 5, T mouth, outside oil returning tube are connected, the A mouth of solenoid directional control valve II 5, B mouth are connected with hydraulic control one-way valve II 6, and hydraulic control one-way valve II 6 is connected with rod chamber and the rodless cavity of hydraulic cylinder 4 respectively through throttle orifice I 7 and throttle orifice II 8.
Further improvement as such scheme, also include sequence valve 9, described fast loop is connected each through the rod chamber of sequence valve 9 with hydraulic cylinder 4 with loop at a slow speed, the X mouth of described sequence valve 9 is connected with the rodless cavity of hydraulic cylinder 4, and the Y mouth of described sequence valve 9 is connected with outside draining pipeline by check valve 10.Hydraulic cylinder 4, for tilting to install, there will be loading condition in adjustment process, and sequence valve can effectively ensure that the stationarity of equipment in cut-out governing process.
As the further improvement of such scheme, described hydraulic cylinder 4 is provided with Displacement Feedback device 11.
In production process, when to reduce spraying width, first starting fast loop, a end electric magnet of solenoid directional control valve I 1 obtains electric, and hydraulic oil enters the rodless cavity of hydraulic cylinder 4 through hydraulic control one-way valve I 2 and one-way throttle valve 3；And the pressure oil of the rod chamber of hydraulic cylinder 4 flows back to fuel tank by sequence valve 9, one-way throttle valve 3, hydraulic control one-way valve I 2 and solenoid directional control valve I 1；The piston rod of hydraulic cylinder 4 stretches out, and makes nozzle 13 move to the direction near conticaster centrage by spraying guider 12.
When displacement feedback device 11 detection arrives deceleration position, being switched to loop at a slow speed from fast loop, a end electric magnet of solenoid directional control valve II 5 obtains electric, and hydraulic oil enters the rodless cavity of hydraulic cylinder 4 through hydraulic control one-way valve II 6 and throttle orifice II 8；And the pressure oil of the rod chamber of hydraulic cylinder 4 flows back to fuel tank by sequence valve 9, throttle orifice I 7, hydraulic control one-way valve II 6 and solenoid directional control valve II 5；The piston rod of hydraulic cylinder 4 stretches out, and makes nozzle 13 move to the direction near conticaster centrage by spraying guider 12；When displacement feedback device 11 detection arrives target location, solenoid directional control valve II 5 dead electricity, loop stops at a slow speed.
When to increase spraying width, first starting fast loop, the b end electric magnet of solenoid directional control valve I 1 obtains electric, and hydraulic oil enters the rod chamber of hydraulic cylinder 4 through hydraulic control one-way valve I 2, one-way throttle valve 3 and sequence valve 9；And the pressure oil of the rodless cavity of hydraulic cylinder 4 flows back to fuel tank by one-way throttle valve 3, hydraulic control one-way valve I 2 and solenoid directional control valve I 1；The piston rod of hydraulic cylinder 4 is retracted, and makes nozzle 13 move to away from conticaster centerline direction by spraying guider 12.
When displacement feedback device 11 detection arrives and presets deceleration position, being switched to loop at a slow speed from fast loop, the b end electric magnet of solenoid directional control valve II 5 obtains electric, and hydraulic oil enters the rod chamber of hydraulic cylinder 4 through hydraulic control one-way valve II 6, throttle orifice I 7 and sequence valve 9；And the pressure oil of the rodless cavity of hydraulic cylinder 4 flows back to fuel tank by throttle orifice II 8, hydraulic control one-way valve II 6 and solenoid directional control valve II 5；The piston rod of hydraulic cylinder 4 is retracted, and makes nozzle 13 move to away from conticaster centerline direction by spraying guider 12；When displacement feedback device 11 detection arrives target location, solenoid directional control valve II 5 dead electricity, loop stops at a slow speed.
When only spraying width being finely tuned, can only open loop at a slow speed.
What finally illustrate is, preferred embodiment above is only in order to illustrate the technical solution of the utility model and unrestricted, although this utility model being described in detail by above preferred embodiment, but skilled artisan would appreciate that, in the form and details it can be made various change, without departing from this utility model claims limited range.
Claims (3)
1. a cut-out governing hydraulic control system, it is characterised in that: include the fast loop and the loop at a slow speed that are arranged in parallel；
Described fast loop is mainly made up of solenoid directional control valve I (1), hydraulic control one-way valve I (2) and one-way throttle valve (3), the P mouth of described solenoid directional control valve I (1), T mouth are connected with outside inflow pipeline, outside oil returning tube respectively, the A mouth of solenoid directional control valve I (1), B mouth are connected with hydraulic control one-way valve I (2), described hydraulic control one-way valve I (2) is connected with one-way throttle valve (3) respectively, and one-way throttle valve (3) is connected with the rod chamber of hydraulic cylinder (4) and rodless cavity respectively；
Described loop at a slow speed is mainly made up of solenoid directional control valve II (5), hydraulic control one-way valve II (6), throttle orifice I (7) and throttle orifice II (8), the P mouth of described solenoid directional control valve II (5), T mouth are connected with outside inflow pipeline, outside oil returning tube respectively, the A mouth of solenoid directional control valve II (5), B mouth are connected with hydraulic control one-way valve II (6), and hydraulic control one-way valve II (6) is connected with rod chamber and the rodless cavity of hydraulic cylinder (4) respectively through throttle orifice I (7) and throttle orifice II (8).
2. cut-out governing hydraulic control system according to claim 1, it is characterized in that: also include sequence valve (9), described fast loop is connected each through the rod chamber of sequence valve (9) with hydraulic cylinder (4) with loop at a slow speed, the X mouth of described sequence valve (9) is connected with the rodless cavity of hydraulic cylinder (4), and the Y mouth of described sequence valve (9) is connected with outside draining pipeline by check valve (10).
3. the cut-out governing hydraulic control system according to any one of claim 1～2, it is characterised in that: described hydraulic cylinder (4) is provided with Displacement Feedback device (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620172574.1U CN205401277U (en) | 2016-03-07 | 2016-03-07 | Nozzle governing hydraulic control system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620172574.1U CN205401277U (en) | 2016-03-07 | 2016-03-07 | Nozzle governing hydraulic control system |
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| CN205401277U true CN205401277U (en) | 2016-07-27 |
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| CN201620172574.1U Active CN205401277U (en) | 2016-03-07 | 2016-03-07 | Nozzle governing hydraulic control system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105570213A (en) * | 2016-03-07 | 2016-05-11 | 中冶赛迪工程技术股份有限公司 | Spray nozzle regulating hydraulic control system |
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2016
- 2016-03-07 CN CN201620172574.1U patent/CN205401277U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105570213A (en) * | 2016-03-07 | 2016-05-11 | 中冶赛迪工程技术股份有限公司 | Spray nozzle regulating hydraulic control system |
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