CN205478690U - Tapering keeps hydraulic control device - Google Patents
Tapering keeps hydraulic control device Download PDFInfo
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- CN205478690U CN205478690U CN201620246336.0U CN201620246336U CN205478690U CN 205478690 U CN205478690 U CN 205478690U CN 201620246336 U CN201620246336 U CN 201620246336U CN 205478690 U CN205478690 U CN 205478690U
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Abstract
The utility model provides a tapering keeps hydraulic control device, including magenetic exchange valve, high frequency response valve, pneumatic cylinder, magenetic exchange valve's pressure hydraulic fluid port P and main pressure pipeline intercommunication, magenetic exchange valve's main hydraulic fluid port B and the pressure hydraulic fluid port P of high frequency response valve intercommunication, the main hydraulic fluid port A and the piston chamber of pneumatic cylinder of high frequency response valve are connected, and the main hydraulic fluid port B and the rod end chamber of pneumatic cylinder of high frequency response valve are connected, the oil return opening T of high frequency response valve with lead go back to the oil pipe way and be linked together. The utility model discloses the crystallizer tapering that not only can set for according to technology, reliably, is automatically realized controlling to the online station keeping of the desired crystallizer tapering of fixed cone degree signal the high accuracy, when the crystallizer needs online width regulation, through controlling this system, can realize online heat and transfer wide control, still can carry out long -time molten steel through this control system and last pouring work under accident situation, and can not take place the crystallizer tapering and change major industrial accidents such as resulting in the molten steel leakage.
Description
Technical field
This utility model belongs to continuous casting steel machine technical field of hydraulic, is specifically related to a kind of tapering and keeps hydraulic control device.
Background technology
The conical degree of crystallizer in continuous casting steel machine field keeps equipment to be generally controlled the narrow limit of crystallizer by driven by servomotor ball-screw push rod the most both at home and abroad, the driving device structure constituted due to servomotor and ball-screw is complicated, it is big to take up room, and transmission link too much causes excesssive gap, cause the tapering of crystallizer to change due to the effect of casting blank bulging power during long molten steel casting, thus cause the industrial accident such as slab quality problem and molten steel leakage.
Utility model content
The purpose of this utility model is to overcome the above-mentioned problems in the prior art, makes conical degree of crystallizer realize in real time and adjusts, so that it is guaranteed that the mould taper control of crystallizer is in the range of error allows.
For this, this utility model provides a kind of tapering and keeps hydraulic control device, including solenoid directional control valve, high frequency sound valve, hydraulic cylinder, pressure oil port P of described solenoid directional control valve and principal pressure pipeline connection, the main hydraulic fluid port B of solenoid directional control valve connects with pressure oil port P of high frequency sound valve, the main hydraulic fluid port A of described high frequency sound valve is connected with the plunger shaft of hydraulic cylinder, and the main hydraulic fluid port B of high frequency sound valve is connected with the rod end chamber of hydraulic cylinder, and the oil return inlet T of high frequency sound valve is connected with main return line；
Being provided with displacement transducer on described hydraulic cylinder, this displacement transducer connects electrical control cabinet by cable, and the built-in integrated form amplifier of described high frequency sound valve and solenoid directional control valve are all connected with electrical control cabinet by cable.
Being provided with the first check valve between oil return inlet T and the main return line of described high frequency sound valve, this first check valve main hydraulic fluid port A is connected with oil return inlet T, the oil return inlet T of high frequency sound valve of solenoid directional control valve respectively, and the first check valve main hydraulic fluid port B connects with main return line.
It is provided with the first hydraulic control one-way valve between main hydraulic fluid port A and the plunger shaft of hydraulic cylinder of described high frequency sound valve, the control port X of this first hydraulic control one-way valve is connected with the main hydraulic fluid port B of solenoid directional control valve, and the drain tap Y of the first hydraulic control one-way valve and the main hydraulic fluid port A of the first check valve connects；
It is provided with the second hydraulic control one-way valve between main hydraulic fluid port B and the rod end chamber of hydraulic cylinder of described high frequency sound valve, the control port X of this second hydraulic control one-way valve is connected with the main hydraulic fluid port B of solenoid directional control valve, and the drain tap Y of the second hydraulic control one-way valve and the main hydraulic fluid port A of the first check valve connects.
Also including that sequence valve, pressure oil port P of described sequence valve are connected with the rod end chamber of hydraulic cylinder, its oil return inlet T is connected with the plunger shaft of hydraulic cylinder, and the spring side of this sequence valve connects blow vent CA.
Also including the second check valve, the main hydraulic fluid port B of described second check valve is connected with the rod end chamber of hydraulic cylinder, pressure oil port P of sequence valve respectively, and the main hydraulic fluid port A of the second check valve and the main hydraulic fluid port A of the first check valve connects.
Also including that overflow valve, pressure oil port P of described overflow valve are connected with the plunger shaft of hydraulic cylinder, its oil return inlet T is connected with the main hydraulic fluid port A of the first check valve and the main hydraulic fluid port A of the second check valve.
The plunger shaft of described hydraulic cylinder connects the first pressure transducer, and the rod end chamber of described hydraulic cylinder connects has the second pressure transducer, the first pressure transducer and the second pressure transducer to be all connected with electrical control cabinet by cable.
It is provided with filter between pressure oil port P and the principal pressure pipeline of described solenoid directional control valve.
The beneficial effects of the utility model are: this tapering that this utility model provides keeps hydraulic control device, not only can in high precision, reliably, automatically realize given conical degree of crystallizer required by tapering signal keep controlling at line position according to the conical degree of crystallizer of technique initialization；And when crystallizer needs online width adjusting, kept the control of the position-force control system of hydraulic control device and electrical control cabinet composition by this tapering, online heat can be realized and adjust width control；Remaining to carry out long molten steel by this control system in the state of accident persistently pours into a mould work simultaneously, without occurring conical degree of crystallizer change to cause the major industrial accidents such as molten steel leakage.
It is described in further details below in conjunction with accompanying drawing.
Accompanying drawing explanation
Fig. 1 is principle schematic of the present utility model.
In figure: 1, filter；201, the first check valve；202, the second check valve；3, ball valve；4, solenoid directional control valve；5, high frequency sound valve；601, the first hydraulic control one-way valve 601；602, the second hydraulic control one-way valve；7, overflow valve；8, sequence valve；901, the first pressure transducer；902, the second pressure transducer；10, hydraulic cylinder；11, displacement transducer；12, electrical control cabinet；PO, principal pressure pipeline；TO, main return line.
Detailed description of the invention
Embodiment 1:
Present embodiments provide a kind of tapering and keep hydraulic control device, including solenoid directional control valve 4, high frequency sound valve 5, hydraulic cylinder 10, pressure oil port P of described solenoid directional control valve 4 connects with principal pressure pipeline PO, the main hydraulic fluid port B of solenoid directional control valve 4 connects with pressure oil port P of high frequency sound valve 5, the main hydraulic fluid port A of described high frequency sound valve 5 is connected with the plunger shaft of hydraulic cylinder 10, the main hydraulic fluid port B of high frequency sound valve 5 is connected with the rod end chamber of hydraulic cylinder 10, and the oil return inlet T of high frequency sound valve 5 is connected with main return line TO；
Being provided with displacement transducer 11 on described hydraulic cylinder 10, this displacement transducer 11 connects electrical control cabinet 12 by cable, and the built-in integrated form amplifier of described high frequency sound valve 5 and solenoid directional control valve 4 are all connected with electrical control cabinet 12 by cable.
This utility model principle:
Electrical control cabinet 12 is provided power supply V by outside; solenoid directional control valve 4 is for shutting down or the cut-out of high pressure fuel source under accident condition; displacement transducer 11 is for the detection of the position of hydraulic cylinder 10; high frequency sound valve 5 automatically controls for the position closed loop of hydraulic cylinder 10; hydraulic cylinder 10 is for controlling the position of mould at narrow copper coin, the i.e. mould taper control of crystallizer.
When normally working, the electric magnet a energising of solenoid directional control valve 4, system is according to the crystallizer position tapering set, the positional value of the displacement transducer 11 that electrical control cabinet 12 is arranged on hydraulic cylinder 10 by detection, the real-time automatic control high frequency of electrical control cabinet 12 rings valve 5, the high precision position realizing conical degree of crystallizer controls, thus ensures the conical degree of crystallizer of technological requirement.
Concrete regulative mode is the upper and lower narrow limit target setting width value to crystallizer, rung the position loop system of valve 5 and narrow limit upper and lower to the crystallizer adjustment of hydraulic cylinder 10 composition of band displacement transducer 11 by electric control unit 12 automatic control high frequency, crystallizer width value is adjusted to target width value by electric control unit 12 automatically.So, according to the width position set in producing and the width value of requirement, it is possible to achieve conical degree of crystallizer keeps function online.Additionally, due to the position-force control system using conical degree of crystallizer to keep hydraulic means to constitute online, automatically the width value of crystallizer can be adjusted to target width value, thus make conticaster change crystallizer width become the easiest, significantly reduce adjustment time and the labor intensity of workman of continuous casting production scene, improve operating rate.
Embodiment 2:
On the basis of embodiment 1, present embodiments provide a kind of tapering and keep hydraulic control device, it is provided with the first check valve 201 between oil return inlet T and the main return line TO of described high frequency sound valve 5, this the first check valve 201 main hydraulic fluid port A is connected with oil return inlet T, the oil return inlet T of high frequency sound valve 5 of solenoid directional control valve 4 respectively, and the first check valve 201 main hydraulic fluid port B connects with main return line TO.
First check valve 201, for preventing the fluid of main return line TO from entering in this control system, causes the position of hydraulic cylinder 10 to change, and the unlatching pressure of 2bar can improve the performance of control high frequency sound valve 5 simultaneously.
Embodiment 3:
On the basis of embodiment 2, present embodiments provide a kind of tapering and keep hydraulic control device, it is provided with the first hydraulic control one-way valve 601 between main hydraulic fluid port A and the plunger shaft of hydraulic cylinder 10 of described high frequency sound valve 5, the control port X of this first hydraulic control one-way valve 601 is connected with the main hydraulic fluid port B of solenoid directional control valve 4, and the drain tap Y of the first hydraulic control one-way valve 601 and main hydraulic fluid port A of the first check valve 201 connects；
It is provided with the second hydraulic control one-way valve 602 between main hydraulic fluid port B and the rod end chamber of hydraulic cylinder 10 of described high frequency sound valve 5, the control port X of this second hydraulic control one-way valve 602 is connected with the main hydraulic fluid port B of solenoid directional control valve 4, and the drain tap Y of the second hydraulic control one-way valve 602 and main hydraulic fluid port A of the first check valve 201 connects.
In the present embodiment; first hydraulic control one-way valve 601 is for shutting down or the break-make control of the plunger shaft pipeline of hydraulic cylinder 10 under accident condition; second hydraulic control one-way valve 602 is for shutting down or the break-make control of the rod end chamber pipeline of hydraulic cylinder 10 under accident condition; control the first hydraulic control one-way valve 601 by solenoid directional control valve 4 and the second hydraulic control one-way valve 602 opens and closes, the first hydraulic control one-way valve 601 and the action simultaneously of the second hydraulic control one-way valve 602.
When normally working, the electric magnet a energising of solenoid directional control valve 4, make the first hydraulic control one-way valve 601 and the second hydraulic control one-way valve 602 open；System is according to the crystallizer position tapering set, the positional value of the displacement transducer 11 that electrical control cabinet 12 is arranged on hydraulic cylinder 10 by detection, the real-time automatic control high frequency of electrical control cabinet 12 rings valve 5, the high precision position realizing conical degree of crystallizer controls, thus ensures the conical degree of crystallizer of technological requirement.
Embodiment 4:
On the basis of embodiment 1, present embodiments provide a kind of tapering and keep hydraulic control device, also include sequence valve 8, pressure oil port P of described sequence valve 8 is connected with the rod end chamber of hydraulic cylinder 10, its oil return inlet T is connected with the plunger shaft of hydraulic cylinder 10, and the spring side of this sequence valve 8 connects blow vent CA.
Sequence valve 8, for the overpressure protection of hydraulic cylinder 10 rod end chamber, prevents owing to hypertonia causes the damage of hydraulic cylinder 10；The most in the state of accident, for adjusting the change in location caused due to the leakage of hydraulic cylinder 10, make under accident condition, this system energy reliability service.Owing to the spring side of sequence valve 8 connects blow vent CA, thus the pressure set points of this sequence valve 8 only with the pretightning force of spring about and unrelated with the pressure of secondary pipes.
Embodiment 5:
On the basis of embodiment 4, present embodiments provide a kind of tapering and keep hydraulic control device, also include the second check valve 202, the main hydraulic fluid port B of described second check valve 202 is connected with rod end chamber, pressure oil port P of sequence valve 8 of hydraulic cylinder 10 respectively, and the main hydraulic fluid port A of the second check valve 202 and main hydraulic fluid port A of the first check valve 201 connects.
Second check valve 202, for the repairing effect of the rod end chamber of hydraulic cylinder 10, prevents the rod end chamber of hydraulic cylinder 10 from producing emptying phenomenon, causes bad seals.
Embodiment 6:
On the basis of embodiment 5, present embodiments provide a kind of tapering and keep hydraulic control device, also including that overflow valve 7, pressure oil port P of described overflow valve 7 are connected with the plunger shaft of hydraulic cylinder 10, its oil return inlet T is connected with the main hydraulic fluid port A of the first check valve 201 and the main hydraulic fluid port A of the second check valve 202.
Overflow valve 7, for the pressure protection of hydraulic cylinder 10 plunger shaft, prevents owing to hypertonia causes the damage of hydraulic cylinder 10.
Embodiment 7:
On the basis of embodiment 1, present embodiments provide a kind of tapering and keep hydraulic control device, the plunger shaft of described hydraulic cylinder 10 connects the first pressure transducer 901, the rod end chamber of described hydraulic cylinder 10 connects has the second pressure transducer 902, the first pressure transducer 901 and the second pressure transducer 902 to be all connected with electrical control cabinet 12 by cable.
First pressure transducer 901 is for detecting the force value detection of hydraulic cylinder 10 plunger shaft, and the second pressure transducer 902 is for the force value detection of the rod end chamber of hydraulic cylinder 10.
Embodiment 8:
On the basis of embodiment 1-7, present embodiments provide a kind of tapering as shown in Figure 1 and keep hydraulic control device, between pressure oil port P and the principal pressure pipeline PO of described solenoid directional control valve 4, be provided with filter 1.It is provided with ball valve 3 between principal pressure pipeline PO and main return line TO.
Filter 1 is for the filtration of fluid, owing to crystallizer it is frequently necessary to maintenance of rolling off the production line, the dismounting of pipeline is easily caused foul and enters in hydraulic system pipeline, arranging filter 1 prevents rear hydraulic components and parts from causing jam phenomenon occur owing to dirt enters pipeline, the oil cleanliness that especially high frequency sound valve 5 requires is higher, prevents hydraulic component fault.
Ball valve 3 is used for flushing and the pressure release of pipeline, to the crystallizer used of newly reaching the standard grade, opens ball valve 3 and is rinsed pipeline, prevents dirt from entering in the pipeline of rear portion；Meanwhile, during detaching pipelines, open ball valve 3 can residual pressure in discharge conduit, make the dismounting of pipeline become simple and safety；It is closed when producing when ball valve 3 is flat.
In Fig. 1, P represents that pressure oil port, T represent that oil return opening, A represent main hydraulic fluid port, and B represents main hydraulic fluid port, and X represents that control port, Y represent that drain tap, CA represent that blow vent, S represent that displacement signal, I represent current signal.
This utility model is in the state of accident, such as hydraulic oil source, hydraulic component or electrical system break down, solenoid directional control valve 4, high frequency sound valve 5 power-off, first hydraulic control one-way valve 601 and the second hydraulic control one-way valve 602 are reliably automatically switched off, and the position of hydraulic cylinder 10 is reliably maintained at initial, set position.Along with persistently carrying out of continuous casting steel machine operation, extended state is born under the effect of the casting blank bulging power that the hydraulic cylinder 10 on crystallizer top is born at crystallizer bottom foot roller, owing to the cavity volume of the rod end chamber of upper hydraulic cylinder 10 is in the closed state of the second hydraulic control one-way valve 602, when force value reaches the setting value of sequence valve 8, sequence valve 8 action, the fluid of hydraulic cylinder 10 rod end chamber flows back to plunger shaft until sequence valve 8 is re-closing off, thus ensure that the pressure of the rod end chamber of hydraulic cylinder 10 is less than setting value, it is to avoid damage the sealing member of hydraulic cylinder 10.
The electrical control cabinet that the present embodiment describes the most in detail belongs to prior art, and parts, structure and the method for in detail narration belongs to the well-known components of the industry or common structure and common knowledge, describes the most one by one.
Exemplified as above is only to illustration of the present utility model, is not intended that the restriction to protection domain of the present utility model, within the every and same or analogous design of this utility model belongs to protection domain of the present utility model.
Claims (8)
1. a tapering keeps hydraulic control device, it is characterized in that: include solenoid directional control valve (4), high frequency sound valve (5), hydraulic cylinder (10), pressure oil port P of described solenoid directional control valve (4) connects with principal pressure pipeline (PO), the main hydraulic fluid port B of solenoid directional control valve (4) connects with pressure oil port P of high frequency sound valve (5), the main hydraulic fluid port A of described high frequency sound valve (5) is connected with the plunger shaft of hydraulic cylinder (10), the main hydraulic fluid port B of high frequency sound valve (5) is connected with the rod end chamber of hydraulic cylinder (10), the oil return inlet T of high frequency sound valve (5) is connected with main return line (TO)；
Displacement transducer (11) is installed on described hydraulic cylinder (10), this displacement transducer (11) connects electrical control cabinet (12) by cable, and built-in integrated form amplifier and the solenoid directional control valve (4) of described high frequency sound valve (5) are all connected with electrical control cabinet (12) by cable.
A kind of tapering the most according to claim 1 keeps hydraulic control device, it is characterized in that: between oil return inlet T and the main return line (TO) of described high frequency sound valve (5), be provided with the first check valve (201), this the first check valve (201) main hydraulic fluid port A is connected with oil return inlet T, the oil return inlet T of high frequency sound valve (5) of solenoid directional control valve (4) respectively, and the first check valve (201) main hydraulic fluid port B connects with main return line (TO).
A kind of tapering the most according to claim 2 keeps hydraulic control device, it is characterized in that: between main hydraulic fluid port A and the plunger shaft of hydraulic cylinder (10) of described high frequency sound valve (5), be provided with the first hydraulic control one-way valve (601), the control port X of this first hydraulic control one-way valve (601) is connected with the main hydraulic fluid port B of solenoid directional control valve (4), and the drain tap Y of the first hydraulic control one-way valve (601) and the main hydraulic fluid port A of the first check valve (201) connects；
It is provided with the second hydraulic control one-way valve (602) between main hydraulic fluid port B and the rod end chamber of hydraulic cylinder (10) of described high frequency sound valve (5), the control port X of this second hydraulic control one-way valve (602) is connected with the main hydraulic fluid port B of solenoid directional control valve (4), and the drain tap Y of the second hydraulic control one-way valve (602) and the main hydraulic fluid port A of the first check valve (201) connects.
A kind of tapering the most according to claim 2 keeps hydraulic control device, it is characterized in that: also include sequence valve (8), pressure oil port P of described sequence valve (8) is connected with the rod end chamber of hydraulic cylinder (10), its oil return inlet T is connected with the plunger shaft of hydraulic cylinder (10), and the spring side of this sequence valve (8) connects blow vent CA.
A kind of tapering the most according to claim 4 keeps hydraulic control device, it is characterized in that: also include the second check valve (202), the main hydraulic fluid port B of described second check valve (202) is connected with rod end chamber, pressure oil port P of sequence valve (8) of hydraulic cylinder (10) respectively, and the main hydraulic fluid port A of the second check valve (202) and the main hydraulic fluid port A of the first check valve (201) connects.
A kind of tapering the most according to claim 5 keeps hydraulic control device, it is characterized in that: also include overflow valve (7), pressure oil port P of described overflow valve (7) is connected with the plunger shaft of hydraulic cylinder (10), and its oil return inlet T is connected with the main hydraulic fluid port A of the first check valve (201) and the main hydraulic fluid port A of the second check valve (202).
A kind of tapering the most according to claim 1 keeps hydraulic control device, it is characterized in that: the plunger shaft of described hydraulic cylinder (10) connects the first pressure transducer (901), the rod end chamber of described hydraulic cylinder (10) connects has the second pressure transducer (902), the first pressure transducer (901) and the second pressure transducer (902) to be all connected with electrical control cabinet (12) by cable.
8. keep hydraulic control device according to a kind of tapering described in any one of claim 1-7, it is characterised in that: it is provided with filter (1) between pressure oil port P and the principal pressure pipeline (PO) of described solenoid directional control valve (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620246336.0U CN205478690U (en) | 2016-03-29 | 2016-03-29 | Tapering keeps hydraulic control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620246336.0U CN205478690U (en) | 2016-03-29 | 2016-03-29 | Tapering keeps hydraulic control device |
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| Publication Number | Publication Date |
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| CN205478690U true CN205478690U (en) | 2016-08-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201620246336.0U Expired - Fee Related CN205478690U (en) | 2016-03-29 | 2016-03-29 | Tapering keeps hydraulic control device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106825094A (en) * | 2017-03-29 | 2017-06-13 | 中国重型机械研究院股份公司 | The thin effective friction and Extrusion device of seamless aluminium tubing of one kind length and extrusion method for producing |
| CN106984662A (en) * | 2017-05-31 | 2017-07-28 | 中国重型机械研究院股份公司 | Oil pressure single action horizontal aluminium extruding machine main machine structure |
| CN113153848A (en) * | 2021-04-19 | 2021-07-23 | 无锡贝斯特精机股份有限公司 | Hydraulic system with pre-compression function |
-
2016
- 2016-03-29 CN CN201620246336.0U patent/CN205478690U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106825094A (en) * | 2017-03-29 | 2017-06-13 | 中国重型机械研究院股份公司 | The thin effective friction and Extrusion device of seamless aluminium tubing of one kind length and extrusion method for producing |
| CN106984662A (en) * | 2017-05-31 | 2017-07-28 | 中国重型机械研究院股份公司 | Oil pressure single action horizontal aluminium extruding machine main machine structure |
| CN113153848A (en) * | 2021-04-19 | 2021-07-23 | 无锡贝斯特精机股份有限公司 | Hydraulic system with pre-compression function |
| CN113153848B (en) * | 2021-04-19 | 2023-03-28 | 无锡贝斯特精机股份有限公司 | Hydraulic system with pre-compression function |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160817 Termination date: 20190329 |
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| CF01 | Termination of patent right due to non-payment of annual fee |