CN103883578B - A kind of slide gate nozzle hydraulic control system - Google Patents
A kind of slide gate nozzle hydraulic control system Download PDFInfo
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- CN103883578B CN103883578B CN201410065227.4A CN201410065227A CN103883578B CN 103883578 B CN103883578 B CN 103883578B CN 201410065227 A CN201410065227 A CN 201410065227A CN 103883578 B CN103883578 B CN 103883578B
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Abstract
The present invention relates to a kind of Novel sliding mouth of a river hydraulic control system, it is constituted the control to slide gate nozzle hydraulic cylinder by automatic control loop, manual control circuit and emergency cut-off loop；It is individually insulated between each loop, wherein isolated by the second two four-way electromagnetic reversing valves between automatic control loop and emergency cut-off loop, isolated by the 4th high-pressure ball valve, the 5th high-pressure ball valve, the 6th high-pressure ball valve, the 7th high-pressure ball valve between manual control circuit and emergency cut-off loop；Also with the first two solenoid directional control valves, the 3rd check valve, the control loops of the 4th check valve；This loop can be automatically switched off slide gate nozzle hydraulic cylinder when electrical system lost efficacy；Also with the second two solenoid directional control valves, the control loops of hydraulic control one-way valve, high pressure fuel source can reliably be closed when slide gate nozzle hydraulic cylinder is installed with dismounting in this loop.The present invention has simple in construction, electric controling mode is simple, dependability is high, security of system highlights, be easy to the features such as maintenance.
Description
Technical field
The invention belongs to smelt and control technical field, be specifically related to a kind of slide gate nozzle hydraulic control system.
Background technology
At present both at home and abroad the hydraulic cylinder in the slide gate nozzle technical field of hydraulic pressure in continuous casting steel machine controls device, mainly has a problems with:
1, slide gate nozzle hydraulic cylinder only has electric operation mode, can not normally the opening and close of manual operation slide gate nozzle hydraulic cylinder under power down mode；
2, slide gate nozzle hydraulic cylinder has hydraulic valve of organizing to control more, but not isolation between hydraulic valve and other hydraulic valves of emergency cut-off, thus the hydraulic valve being used for emergency cut-off in the state of accident can not reliably work；
3, in slide gate nozzle hydraulic cylinder installation site and slide gate nozzle hydraulic cylinder normal operation position, identical for controlling the pressure size of slide gate nozzle hydraulic cylinder, easily because of operator's operational error, the accident when installing slide gate nozzle hydraulic cylinder is caused to open, thus cause molten steel to outflow, bigger industrial accident occurs.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of slide gate nozzle hydraulic control system, not have isolation, the defect that pressure size is identical and security performance is the highest of control hydraulic cylinder to overcome that operator scheme present in prior art is single, between hydraulic control valve group.
For solving the problems referred to above, the technical scheme is that a kind of slide gate nozzle hydraulic control system, including principal pressure pipeline and oil return pipe, wherein principal pressure pipeline P hydraulic fluid port is provided with Pressure gauge, and is connected by principal pressure tube and tube road B；Oil return pipe T mouth is connected with pipeline A through oil return pipe；Pipeline A, B are connected with two chambeies of slide gate nozzle hydraulic cylinder by the first high-pressure rubber pipe, the second high-pressure rubber pipe respectively, and described pipeline principal pressure pipeline P hydraulic fluid port is connected by the first high-pressure ball valve pressure oil port P5 with the first three-position four-way electromagnetic directional valve again that is connected with air relief valve pressure oil port P, is connected by pressure oil port P6 of reducer and the second two four-way electromagnetic reversing valves, is connected by pressure oil port P7 of hydraulic control one-way valve and the second three-position four-way electromagnetic directional valve respectively.
Described principal pressure pipeline P hydraulic fluid port is connected with accumulator by the first high-pressure ball valve, the second check valve, the second high-pressure ball valve respectively, then pass sequentially through the first high-pressure ball valve, the second check valve is connected with pressure oil port P1 of hand-operated direction valve；Pressure oil port P2 passing sequentially through the first high-pressure ball valve, the second check valve and the first two solenoid directional control valves again is connected；
Control port A1, B1 of described hand-operated direction valve is respectively by the first stacking type hydraulic control check valve, the first superposing type choke valve, the first pressure measuring tie-in, and the second pressure measuring tie-in, the 4th high-pressure ball valve, the 5th high-pressure ball valve are connected with pipeline A, B.
Control port A2, B2 of described the first two solenoid directional control valves is respectively by the 3rd check valve), the 4th check valve, the 3rd pressure measuring tie-in, the 4th pressure measuring tie-in, the 6th high-pressure ball valve, the 7th high-pressure ball valve are connected with pipeline A, B.
Control port A5, B5 of described first three-position four-way electromagnetic directional valve is connected by second stacking type hydraulic control check valve the second superposing type choke valve and the second two pressure oil port P4 of four-way electromagnetic reversing valve, oil return inlet T 4 respectively；
Control port A3, B3 of described the first two four-way electromagnetic reversing valves and the second two pressure oil port P4 of four-way electromagnetic reversing valve, oil return inlet T 4 connect；
Control port A7, B7 of described second three-position four-way electromagnetic directional valve is connected by the 3rd stacking type hydraulic control check valve, the 3rd superposing type choke valve the 5th pressure measuring tie-in, the 6th pressure measuring tie-in and the second two pressure oil port P4 of four-way electromagnetic reversing valve, oil return inlet T 4 respectively；
Control port A4, B4 of described the second two four-way electromagnetic reversing valves are connected with pipeline A, B by the 6th high-pressure ball valve, the 7th high-pressure ball valve respectively.
Described oil return pipe is connected with pressure switch through the 3rd high-pressure ball valve, check valve.
Described principal pressure pipeline is connected with oil return pipe through the second check valve, the second high-pressure ball valve, overflow valve.
Described hydraulic control one-way valve is connected with principal pressure pipeline, hydraulic control one-way valve drain tap is connected with oil return pipe, hydraulic control one-way valve control port is connected with the control port B6 of the second two four-way electromagnetic reversing valves.
Technique scheme includes automatic control loop, manual control circuit and emergency cut-off loop；It is individually insulated between each loop, wherein isolated by the second two four-way electromagnetic reversing valves between automatic control loop and emergency cut-off loop, isolated by the 4th high-pressure ball valve, the 5th high-pressure ball valve, the 6th high-pressure ball valve, the 7th high-pressure ball valve between manual control circuit and emergency cut-off loop.
Technique effect and the advantage of the present invention are as follows:
1. the present invention is made up of automatic control loop, manual control circuit and emergency cut-off loop.In automatic control loop, being controlled by the decompression of relief circuit, for the pressure release when installing hydraulic cylinder, after pressure release, operator can install slide gate nozzle hydraulic cylinder easily；By the Decompression Controlling in Decompression Controlling loop, operator can install hydraulic cylinder safely and reliably in slide gate nozzle hydraulic cylinder installation site；By high voltage control loop, slide gate nozzle hydraulic cylinder can normally be opened in operating position and close, and also ensures that operator's reliably closing presure oil circuit when slide gate nozzle hydraulic cylinder installation site hydraulic cylinder, it is to avoid cause great industrial accident simultaneously；In emergency cut-off loop, can reliably close slide gate nozzle hydraulic cylinder when electrical system and hydraulic system fails by controlling this group loop, do not have industrial accident；Being manually operated this group loop in manual control circuit can be in the case of electrical system breaks down, the opening and closing of Non-follow control slide gate nozzle hydraulic cylinder, improves the reliability of system work, reduces the disorderly closedown time, improves the reliability of system.Wherein can reliably isolate between automatic control loop, manual control circuit and emergency cut-off loop.
2. the present invention has simple in construction, electric controling mode is simple, dependability is high, security of system highlights, be easy to the features such as maintenance.
Accompanying drawing explanation
Below in conjunction with embodiment accompanying drawing, the present invention is described further.
Fig. 1 is the structural representation of the present invention.
Reference is:
null101 first high-pressure ball valves，102 second high-pressure ball valves，103 the 3rd high-pressure ball valves，104 the 4th high-pressure ball valves，105 the 5th high-pressure ball valves，106 the 6th high-pressure ball valves，107 the 7th high-pressure ball valves，201 first check valves，202 second check valves，203 the 3rd check valves，204 the 4th check valves，3 Pressure gauges，4 accumulators，5 overflow valves，6 pressure switches，7 hand-operated direction valves，801 first stacking type hydraulic control check valves，802 second stacking type hydraulic control check valves，803 the 3rd stacking type hydraulic control check valves，901 first superposing type choke valves，902 second superposing type choke valves，903 the 3rd superposing type choke valves，1001 first pressure measuring tie-ins，1002 second pressure measuring tie-ins，1003 the 3rd pressure measuring tie-ins，1004 the 4th pressure measuring tie-ins，1005 the 5th pressure measuring tie-ins，1006 the 6th pressure measuring tie-ins，1101 the first two solenoid directional control valves，1102 the second two solenoid directional control valves，1201 the first two four-way electromagnetic reversing valves，1202 the second two four-way electromagnetic reversing valves，13 air relief valve，1401 first three-position four-way electromagnetic directional valve，1402 second three-position four-way electromagnetic directional valve，15 reducers，16 hydraulic control one-way valves，1701 first high-pressure rubber pipes，1702 second high-pressure rubber pipes，18 slide gate nozzle hydraulic cylinders.
Detailed description of the invention
Embodiment 1, describes in detail in conjunction with accompanying drawing 1.
A kind of slide gate nozzle hydraulic control system, including principal pressure pipeline and oil return pipe, wherein principal pressure pipeline P hydraulic fluid port is provided with Pressure gauge 3, and is connected by principal pressure tube and tube road B；Oil return pipe T mouth is connected with pipeline A through oil return pipe；Pipeline A, B are connected with two chambeies of slide gate nozzle hydraulic cylinder 18 by first high-pressure rubber pipe the 1701, second high-pressure rubber pipe 1702 respectively, and described pipeline principal pressure pipeline P hydraulic fluid port is connected by the first high-pressure ball valve 101 pressure oil port P5 with the first three-position four-way electromagnetic directional valve 1401 again that is connected with pressure oil port P of air relief valve 13, is connected by pressure oil port P6 of reducer 15 with the second two four-way electromagnetic reversing valves 1102, is connected by pressure oil port P7 of hydraulic control one-way valve 16 with the second three-position four-way electromagnetic directional valve 1402 respectively.
The program achieves automatically controlling of slide gate nozzle hydraulic cylinder, simple in construction, practical.
Embodiment 2；Describe in conjunction with accompanying drawing 1.
Described principal pressure pipeline P hydraulic fluid port is connected with accumulator 4 by first high-pressure ball valve the 101, second check valve the 202, second high-pressure ball valve 102 respectively, then passes sequentially through first high-pressure ball valve the 101, second check valve 202 and be connected with pressure oil port P1 of hand-operated direction valve 7；Pass sequentially through first high-pressure ball valve the 101, second check valve 202 again to be connected with pressure oil port P2 of the first two solenoid directional control valves 1101；
Control port A1, B1 of described hand-operated direction valve 7 is respectively by first stacking type hydraulic control check valve the 801, first superposing type choke valve the 901, first pressure measuring tie-in 1001, and the second pressure measuring tie-in the 1002, the 4th high-pressure ball valve the 104, the 5th high-pressure ball valve 105 is connected with pipeline A, B.3. the Novel sliding mouth of a river as claimed in claim 2 hydraulic control system, it is characterized in that: control port A2, B2 of described the first two solenoid directional control valves 1101 is respectively by the 3rd check valve the 203, the 4th check valve the 204, the 3rd pressure measuring tie-in 1003,4th pressure measuring tie-in 1004, the 6th high-pressure ball valve the 106, the 7th high-pressure ball valve 107 is connected with pipeline A, B.
] control port A5, B5 of described first three-position four-way electromagnetic directional valve 1401 be connected with the second two pressure oil port P4 of four-way electromagnetic reversing valve 1202, oil return inlet T 4 by second stacking type hydraulic control check valve the 802, second superposing type choke valve 902 respectively；
Control port A3, B3 of described the first two four-way electromagnetic reversing valves 1201 and the second two pressure oil port P4 of four-way electromagnetic reversing valve 1202, oil return inlet T 4 connect；
Control port A7, B7 of described second three-position four-way electromagnetic directional valve 1402 is connected with the second two pressure oil port P4 of four-way electromagnetic reversing valve 1202, oil return inlet T 4 by the 3rd stacking type hydraulic control check valve the 803, the 3rd superposing type choke valve the 903, the 5th pressure measuring tie-in the 1005, the 6th pressure measuring tie-in 1006 respectively；
Control port A4, B4 of described the second two four-way electromagnetic reversing valves 1202 are connected with pipeline A, B by the 6th high-pressure ball valve the 106, the 7th high-pressure ball valve 107 respectively.
Described oil return pipe is connected with pressure switch 6 through the 3rd high-pressure ball valve 103, check valve 8.
Described principal pressure pipeline is connected with oil return pipe through second check valve the 202, second high-pressure ball valve 102, overflow valve 5.
Described hydraulic control one-way valve 16 is connected with principal pressure pipeline, hydraulic control one-way valve 6 drain tap is connected with oil return pipe, hydraulic control one-way valve 16 control port is connected with the control port B6 of the second two four-way electromagnetic reversing valves 1102.
Wherein: overflow valve 5, for the overload protection of accumulator, prevents system failure；Pressure switch 6 is reported to the police for the low-pressure of accumulator accident oil sources；Hand-operated direction valve 7 opening for Non-follow control slide gate nozzle hydraulic cylinder 18 and cutting out；The first two solenoid directional control valves 1101 are for electrically and the emergency cut-off of hydraulic system off-position lower slider mouth of a river hydraulic cylinder；The first two four-way electromagnetic reversing valves 1201 are for the pressure release of slide gate nozzle hydraulic cylinder；The second two four-way electromagnetic reversing valves 1202 are for the isolation between slide gate nozzle hydraulic cylinder automatic control loop and emergency cut-off loop；Air relief valve the 13, first three-position four-way electromagnetic directional valve 1401 is installed and automatically controlling when dismantling for slide gate nozzle hydraulic cylinder, and this pressure adjustable is whole, it is ensured that system safe and reliable；Reducer 15, the second two solenoid directional control valves 1102, hydraulic control one-way valve 16 are for the cut-out of high-pressure oil sources, it is ensured that the security function when installation of slide gate nozzle hydraulic cylinder and dismounting；Second three-position four-way electromagnetic directional valve 1402 normally opening and closing for slide gate nozzle hydraulic cylinder.
Below by the concrete operation method of this control system, solving the technical problem that of the present invention is described.
The present invention is when normally working, by control the first two solenoid directional control valves 1101 electric, the second two four-way electromagnetic reversing valves 1202 electric, the first two four-way electromagnetic reversing valve 1201 dead electricity, the second two solenoid directional control valves 1102 electric, the electric magnet a controlling the second three-position four-way electromagnetic directional valve 1402 respectively obtains electric, slide gate nozzle hydraulic cylinder normal switching-off；The electric magnet b controlling the second three-position four-way electromagnetic directional valve 1402 respectively obtains electric, and slide gate nozzle hydraulic cylinder is normally opened；Thus realize the normal work of slide gate nozzle hydraulic cylinder.
The present invention is when normally working, when electrical system breaks down, by closing the 6th high-pressure ball valve the 106, the 7th high-pressure ball valve 107, open the 4th high-pressure ball valve the 104, the 5th high-pressure ball valve 105, operator operate hand-operated direction valve 7 respectively, control slide gate nozzle hydraulic cylinder respectively and normally open and close；Thus realize slide gate nozzle hydraulic cylinder and normally open and close work under electrical malfunction, reduce the disorderly closedown time, improve the reliability of system.
The present invention is when slide gate nozzle hydraulic cylinder installation site is installed and dismantles hydraulic cylinder, by control the first two solenoid directional control valves 1101 electric, the second two four-way electromagnetic reversing valves 1202 electric, the first two four-way electromagnetic reversing valve 1201 dead electricity, the second two solenoid directional control valve 1102 dead electricity, the electric magnet a controlling the first three-position four-way electromagnetic directional valve 1401 respectively obtains electric, and slide gate nozzle hydraulic cylinder low pressure is closed；The electric magnet b controlling the first three-position four-way electromagnetic directional valve 1401 respectively obtains electric, and slide gate nozzle hydraulic cylinder low pressure is opened；Thus realize the leak test before slide gate nozzle hydraulic cylinder automatically installing, dismantle and using when installation site.
The present invention is when slide gate nozzle hydraulic cylinder installation site is installed and dismantles hydraulic cylinder, by control the first two solenoid directional control valves 1101 electric, the second two four-way electromagnetic reversing valves 1202 electric, the second two solenoid directional control valve 1102 dead electricity, control the first two four-way electromagnetic reversing valves 1201 electric, slide gate nozzle hydraulic cylinder off-load；Thus realize the off-load when installation site of the slide gate nozzle hydraulic cylinder and install, dismantle.
The present invention is when slide gate nozzle electrical system and hydraulic oil source all break down, the second two automatic dead electricity of four-way electromagnetic reversing valve 1202, the first two automatic dead electricity of solenoid directional control valve 1101, slide gate nozzle hydraulic cylinder uses the pressure oil-source of accumulator 4, control slide gate nozzle hydraulic cylinder automatic emergency to close, the flowing of molten steel will not be out of control, it is ensured that the trouble free service of system.
Understand the automatic control loop that is made up of relief circuit, pressure reducing circuit and high tension loop when electrical system and hydraulic pressure oil supply system normally work by described above, slide gate nozzle hydraulic cylinder is normally opened and closing control.Wherein, by relief circuit, operator can install slide gate nozzle hydraulic cylinder easily；By pressure reducing circuit, operator can load and unload slide gate nozzle hydraulic cylinder in hydraulic cylinder installation site safely；By high tension loop, operator can normally open and close slide gate nozzle hydraulic cylinder, can also close high pressure fuel source when loading and unloading slide gate nozzle hydraulic cylinder simultaneously, it is ensured that the safety of system and reliable, it is to avoid industrial accident occurs.
Emergency cut-off loop, when electrical system and hydraulic pressure oil supply system lost efficacy, carries out emergency cut-off control to slide gate nozzle hydraulic cylinder, prevents industrial accident.Manual control circuit, when electrical system and hydraulic pressure oil supply system lost efficacy, opens and closes control normally to slide gate nozzle hydraulic cylinder, reduces because systematic failures causes shutdown, improves the reliability of system.
Parts that the present embodiment describes the most in detail and structure belong to the well-known components of the industry and common structure or conventional means, describe the most one by one.
Claims (4)
1. a slide gate nozzle hydraulic control system, including principal pressure pipeline and oil return pipe, wherein principal pressure pipeline P hydraulic fluid port is provided with Pressure gauge (3), and is connected by principal pressure tube and tube road B；Oil return pipe T mouth is connected with pipeline A through oil return pipe；Pipeline A, B is respectively by the first high-pressure rubber pipe (1701), second high-pressure rubber pipe (1702) is connected with two chambeies of slide gate nozzle hydraulic cylinder (18), it is characterized in that: described pipeline principal pressure pipeline P hydraulic fluid port is connected by pressure oil port P of the first high-pressure ball valve (101) with air relief valve (13) pressure oil port P5 with the first three-position four-way electromagnetic directional valve (1401) again that is connected respectively, it is connected by pressure oil port P6 of reducer (15) with the second two four-way electromagnetic reversing valves (1102), it is connected by pressure oil port P7 of hydraulic control one-way valve (16) with the second three-position four-way electromagnetic directional valve (1402).
2. slide gate nozzle hydraulic control system as claimed in claim 1, it is characterised in that: described oil return pipe is connected with pressure switch (6) through the 3rd high-pressure ball valve (103), check valve.
3. slide gate nozzle hydraulic control system as claimed in claim 2, it is characterised in that: described principal pressure pipeline is connected with oil return pipe through the second check valve (202), the second high-pressure ball valve (102), overflow valve (5).
4. as claimed in claim 3 slide gate nozzle hydraulic control system, it is characterised in that: described hydraulic control one-way valve (16) is connected with principal pressure pipeline, hydraulic control one-way valve (16) drain tap is connected with oil return pipe, hydraulic control one-way valve (16) control port is connected with the control port B6 of the second two four-way electromagnetic reversing valves (1102).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410065227.4A CN103883578B (en) | 2014-02-26 | 2014-02-26 | A kind of slide gate nozzle hydraulic control system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410065227.4A CN103883578B (en) | 2014-02-26 | 2014-02-26 | A kind of slide gate nozzle hydraulic control system |
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| CN103883578A CN103883578A (en) | 2014-06-25 |
| CN103883578B true CN103883578B (en) | 2016-08-17 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105508316B (en) * | 2014-09-26 | 2017-08-25 | 宝钢工程技术集团有限公司 | The fan-shaped section pressure hydraulic means and its application method protected based on hydraulic fault |
| CN110102730B (en) * | 2019-04-18 | 2024-03-22 | 宣化钢铁集团有限责任公司 | Casting method of crystallizer |
| CN110030222B (en) * | 2019-05-16 | 2024-02-23 | 中冶赛迪工程技术股份有限公司 | Differential hydraulic control loop of hydraulic control gate valve and hydraulic system using same |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1406689A (en) * | 2001-08-28 | 2003-04-02 | 涟源钢铁集团有限公司 | Hydraulic transmission system for slide runner of continuous casting ladle |
| 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 |
| EP2062719A2 (en) * | 2007-11-23 | 2009-05-27 | Kreyenborg Verwaltungen und Beteiligungen GmbH & Co. KG | Screen changer |
| CN202691560U (en) * | 2012-05-23 | 2013-01-23 | 中国重型机械研究院有限公司 | Hydraulic drive broken belt protective device |
| CN203330394U (en) * | 2013-03-08 | 2013-12-11 | 马钢(集团)控股有限公司 | Hydraulic control system used for continuous casting bake sliding gate nozzle switch |
| CN203409244U (en) * | 2013-06-13 | 2014-01-29 | 唐山渤海冶金设备有限责任公司 | Multifunctional hydraulic valve block for steel ladle sliding nozzle |
| CN203756630U (en) * | 2014-02-26 | 2014-08-06 | 中国重型机械研究院股份公司 | Novel sliding nozzle hydraulic control system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4478552B2 (en) * | 2004-11-22 | 2010-06-09 | 寿産業株式会社 | Guide clamp system of guide device |
-
2014
- 2014-02-26 CN CN201410065227.4A patent/CN103883578B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1406689A (en) * | 2001-08-28 | 2003-04-02 | 涟源钢铁集团有限公司 | Hydraulic transmission system for slide runner of continuous casting ladle |
| 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 |
| EP2062719A2 (en) * | 2007-11-23 | 2009-05-27 | Kreyenborg Verwaltungen und Beteiligungen GmbH & Co. KG | Screen changer |
| CN202691560U (en) * | 2012-05-23 | 2013-01-23 | 中国重型机械研究院有限公司 | Hydraulic drive broken belt protective device |
| CN203330394U (en) * | 2013-03-08 | 2013-12-11 | 马钢(集团)控股有限公司 | Hydraulic control system used for continuous casting bake sliding gate nozzle switch |
| CN203409244U (en) * | 2013-06-13 | 2014-01-29 | 唐山渤海冶金设备有限责任公司 | Multifunctional hydraulic valve block for steel ladle sliding nozzle |
| CN203756630U (en) * | 2014-02-26 | 2014-08-06 | 中国重型机械研究院股份公司 | Novel sliding nozzle hydraulic control system |
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