CN105757065B - A kind of conical degree of crystallizer keeps hydraulic control system online - Google Patents
A kind of conical degree of crystallizer keeps hydraulic control system online Download PDFInfo
- Publication number
- CN105757065B CN105757065B CN201610184259.5A CN201610184259A CN105757065B CN 105757065 B CN105757065 B CN 105757065B CN 201610184259 A CN201610184259 A CN 201610184259A CN 105757065 B CN105757065 B CN 105757065B
- Authority
- CN
- China
- Prior art keywords
- valve
- fluid port
- main
- high frequency
- hydraulic fluid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/08—Servomotor systems incorporating electrically operated control means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/04—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds
- B22D11/057—Manufacturing or calibrating the moulds
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B20/00—Safety arrangements for fluid actuator systems; Applications of safety devices in fluid actuator systems; Emergency measures for fluid actuator systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
- F15B2211/765—Control of position or angle of the output member
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Engineering & Computer Science (AREA)
- Fluid-Pressure Circuits (AREA)
- Manufacturing & Machinery (AREA)
Abstract
The invention provides a kind of conical degree of crystallizer to keep hydraulic control system online, including solenoid directional control valve, high frequency sound valve, hydraulic cylinder, the pressure oil port P of the solenoid directional control valve and principal pressure pipeline connection, the main hydraulic fluid port B of solenoid directional control valve connects with the pressure oil port P of high frequency sound valve, main the hydraulic fluid port A and hydraulic cylinder of the high frequency sound valve plunger shaft connection, main the hydraulic fluid port B and hydraulic cylinder of high frequency sound valve rod end chamber connection, the oil return inlet T of high frequency sound valve are connected with main return line.The present invention not only can be according to the conical degree of crystallizer of technique initialization, and the conical degree of crystallizer required by high accuracy, reliable, the given taper signal of automatically realization keeps controlling in line position；And when crystallizer needs online width adjusting, by controlling the system, it can realize that online heat adjusts wide control；Remain to persistently pour into a mould work by the prolonged molten steel of control system progress in the state of accident simultaneously, cause the major industrial accidents such as molten steel leakage without conical degree of crystallizer change occurs.
Description
Technical field
The invention belongs to continuous casting steel machine technical field of hydraulic, and in particular to a kind of conical degree of crystallizer keeps hydraulic pressure online
Control system.
Background technology
The conical degree of crystallizer in continuous casting steel machine field keeps equipment generally to drive ball-screw by servomotor both at home and abroad at present
Push rod is controlled to the narrow side of crystallizer, and the driving device structure formed due to servomotor and ball-screw is complicated, takes
Space is big, and transmission link excessively causes gap excessive, due to the work of casting blank bulging power in prolonged molten steel casting cycle
With causing the taper of crystallizer to change, so as to cause the industrial accident such as slab quality problem and molten steel leakage.
The content of the invention
The purpose of the present invention is to overcome the above-mentioned problems in the prior art, conical degree of crystallizer is realized adjustment in real time,
So that it is guaranteed that the mould taper control of crystallizer is in the range of error permission.
Therefore, the invention provides a kind of conical degree of crystallizer to keep hydraulic control system, including solenoid directional control valve, height online
Frequency response valve, hydraulic cylinder, the pressure oil port P of the solenoid directional control valve and principal pressure pipeline connection, the main hydraulic fluid port B of solenoid directional control valve with
The pressure oil port P connections of high frequency sound valve, main the hydraulic fluid port A and hydraulic cylinder of the high frequency sound valve plunger shaft connection, high frequency sound valve
Main hydraulic fluid port B and hydraulic cylinder rod end chamber connection, the oil return inlet T of high frequency sound valve are connected with main return line；
Displacement transducer is installed on the hydraulic cylinder, the displacement transducer is described by cable connection electrical control cabinet
Built-in the integrated form amplifier and solenoid directional control valve of high frequency sound valve are connected by cable with electrical control cabinet.
The first check valve is provided between the oil return inlet T of the high frequency sound valve and main return line, the main oil of the first check valve
The oil return inlet T with solenoid directional control valve, the oil return inlet T of high frequency sound valve are connected mouth A respectively, the main hydraulic fluid port B of the first check valve and main oil return
Pipeline connection.
The first hydraulic control one-way valve, first liquid are provided between main the hydraulic fluid port A and hydraulic cylinder of the high frequency sound valve plunger shaft
The control port X and solenoid directional control valve of check valve main hydraulic fluid port B connections are controlled, the drain tap Y of the first hydraulic control one-way valve and first is single
Main hydraulic fluid port A connections to valve；
The second hydraulic control one-way valve is provided between main the hydraulic fluid port B and hydraulic cylinder of the high frequency sound valve rod end chamber, this second
The control port X and solenoid directional control valve of hydraulic control one-way valve main hydraulic fluid port B connections, the drain tap Y of the second hydraulic control one-way valve and first
The main hydraulic fluid port A connections of check valve.
Also include sequence valve, the pressure oil port P of the sequence valve and the rod end chamber of hydraulic cylinder connect, its oil return inlet T with
The plunger shaft of hydraulic cylinder is connected, the spring side connection blow vent CA of the sequence valve.
Also include the second check valve, the main hydraulic fluid port B of second check valve rod end chamber with hydraulic cylinder, sequence valve respectively
Pressure oil port P connections, the main hydraulic fluid port A of the second check valve is connected with the main hydraulic fluid port A of the first check valve.
Also include overflow valve, the pressure oil port P of the overflow valve and the plunger shaft of hydraulic cylinder connect, its oil return inlet T and the
Main the hydraulic fluid port A and the second check valve of one check valve main hydraulic fluid port A are connected.
The plunger shaft of the hydraulic cylinder is connected with first pressure sensor, and the rod end chamber of the hydraulic cylinder is connected with second
Pressure sensor, first pressure sensor and second pressure sensor are connected by cable with electrical control cabinet.
Filter is provided between the pressure oil port P and principal pressure pipeline of the solenoid directional control valve.
Ball valve is provided between the principal pressure pipeline and main return line.
The beneficial effects of the invention are as follows：This conical degree of crystallizer provided by the invention keeps hydraulic control system online, no
But can be according to the conical degree of crystallizer of technique initialization, the crystallizer required by high accuracy, reliable, the given taper signal of automatically realization
Taper keeps controlling in line position；And when crystallizer needs online width adjusting, kept online by the conical degree of crystallizer
The control for the position-force control system that hydraulic control system and electrical control cabinet are formed, it can realize that online heat adjusts wide control；Together
When remain to carry out prolonged molten steel by the control system in the state of accident persistently to pour into a mould work, without crystallizer occurs
Taper change causes the major industrial accidents such as molten steel leakage.
It is described in further details below in conjunction with accompanying drawing.
Brief description of the drawings
Fig. 1 is the principle schematic of the present invention.
In figure：1st, filter；201st, the first check valve；202nd, the second check valve；3rd, ball valve；4th, solenoid directional control valve；5th, it is high
Frequency response valve；601st, the first hydraulic control one-way valve 601；602nd, the second hydraulic control one-way valve；7th, overflow valve；8th, sequence valve；901st, the first pressure
Force snesor；902nd, second pressure sensor；10th, hydraulic cylinder；11st, displacement transducer；12nd, electrical control cabinet；PO, principal pressure pipe
Road；TO, main return line.
Embodiment
Embodiment 1：
Present embodiments provide a kind of conical degree of crystallizer and keep hydraulic control system, including solenoid directional control valve 4, high frequency online
Valve 5, hydraulic cylinder 10 are rung, the pressure oil port P of the solenoid directional control valve 4 connects with principal pressure pipeline PO, the main oil of solenoid directional control valve 4
Mouth B is connected with the pressure oil port P of high frequency sound valve 5, and the main hydraulic fluid port A of the high frequency sound valve 5 is connected with the plunger shaft of hydraulic cylinder 10, high
The main hydraulic fluid port B of frequency response 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
It is logical；
Displacement transducer 11 is installed on the hydraulic cylinder 10, the displacement transducer 11 passes through cable connection electrical control cabinet
12, built-in the integrated form amplifier and solenoid directional control valve 4 of the high frequency sound valve 5 are connected by cable with electrical control cabinet 12.
The principle of the invention：
Electrical control cabinet 12 provides power supply V by outside, and solenoid directional control valve 4 is used for high pressure fuel source under shutdown or accident condition
Cut-out, the position that displacement transducer 11 is used for hydraulic cylinder 10 are detected, and the position closed loop that high frequency sound valve 5 is used for hydraulic cylinder 10 is controlled automatically
System, hydraulic cylinder 10 are used for the mould taper control for controlling the position, i.e. crystallizer of mould at narrow copper coin.
In normal work, the electromagnet a of solenoid directional control valve 4 is powered, and system is according to the crystallizer position taper of setting, electricity
Gas switch board 12 is arranged on the positional value of the displacement transducer 11 on hydraulic cylinder 10 by detection, and electrical control cabinet 12 is automatic in real time
High frequency sound valve 5 is controlled, the high precision position control of conical degree of crystallizer is realized, so as to ensure the conical degree of crystallizer of technological requirement.
Specific regulative mode is the upper and lower narrow side sets target width value to crystallizer, passes through electric control unit 12
Automatic control high frequency rings the position for the narrow side adjustment upper and lower to crystallizer that valve 5 is formed with the hydraulic cylinder 10 with displacement transducer 11
Crystallizer width value is adjusted to target width value by closed-loop system, electric control unit 12 automatically.So, set according in production
Width position and requirement width value, it is possible to achieve conical degree of crystallizer keeps function online.Bored additionally, due to using crystallizer
The online position-force control system for keeping hydraulic means to form of degree, can be adjusted to target width by the width value of crystallizer automatically
Value, thus make conticaster change crystallizer width become very easily, significantly reduce continuous casting scene adjustment time and
The labor intensity of worker, improves operating rate.
Embodiment 2：
On the basis of embodiment 1, present embodiments provide a kind of conical degree of crystallizer and keep hydraulic control system online, institute
State and the first check valve 201 is provided between the oil return inlet T of high frequency sound valve 5 and main return line TO, the 201 main hydraulic fluid port of the first check valve
The oil return inlet T with solenoid directional control valve 4, the oil return inlet T of high frequency sound valve 5 are connected A respectively, and 201 main hydraulic fluid port B of the first check valve is with leading back
Oil pipe line TO is connected.
First check valve 201 is used to prevent main return line TO fluid from entering in this control system, causes hydraulic cylinder 10
Position change, while 2bar Opening pressure can improve the performance of control high frequency sound valve 5.
Embodiment 3：
On the basis of embodiment 2, present embodiments provide a kind of conical degree of crystallizer and keep hydraulic control system online, institute
State and be provided with the first hydraulic control one-way valve 601, the first hydraulic control list between main the hydraulic fluid port A and hydraulic cylinder 10 of high frequency sound valve 5 plunger shaft
Control port X to valve 601 is connected with the main hydraulic fluid port B of solenoid directional control valve 4, the drain tap Y and first of the first hydraulic control one-way valve 601
The main hydraulic fluid port A connections of check valve 201；
The second hydraulic control one-way valve 602 is provided between main the hydraulic fluid port B and hydraulic cylinder 10 of the high frequency sound valve 5 rod end chamber,
The control port X of second hydraulic control one-way valve 602 is connected with the main hydraulic fluid port B of solenoid directional control valve 4, the second hydraulic control one-way valve 602
Drain tap Y is connected with the main hydraulic fluid port A of the first check valve 201.
In the present embodiment, the first hydraulic control one-way valve 601 is used for the plunger shaft pipeline of hydraulic cylinder 10 under shutdown or accident condition
Break-make control, the second hydraulic control one-way valve 602 be used for shut down or accident condition under hydraulic cylinder 10 rod end chamber pipeline break-make
Control, the first hydraulic control one-way valve 601 and the second hydraulic control one-way valve 602 is controlled to open and close by solenoid directional control valve 4, the first liquid
The control hydraulic control one-way valve 602 of check valve 601 and second acts simultaneously.
In normal work, the electromagnet a of solenoid directional control valve 4 is powered, and makes the first hydraulic control one-way valve 601 and the second hydraulic control list
Opened to valve 602；System is according to the crystallizer position taper of setting, and electrical control cabinet 12 is by detection on hydraulic cylinder 10
Displacement transducer 11 positional value, 12 real-time automatic control high frequency of electrical control cabinet ring valve 5, realize the high-precision of conical degree of crystallizer
Position control is spent, so as to ensure the conical degree of crystallizer of technological requirement.
Embodiment 4：
On the basis of embodiment 1, present embodiments provide a kind of conical degree of crystallizer and keep hydraulic control system online, also
Including sequence valve 8, the pressure oil port P of the sequence valve 8 is connected with the rod end chamber of hydraulic cylinder 10, its oil return inlet T and hydraulic cylinder
10 plunger shaft is connected, the spring side connection blow vent CA of the sequence valve 8.
Sequence valve 8 is used for the overpressure protection of the rod end chamber of hydraulic cylinder 10, prevents because hypertonia causes hydraulic cylinder 10
Damage；While in the state of accident, for adjusting due to change in location caused by the leakage of hydraulic cylinder 10, make under accident condition,
The system energy reliability service.Because the spring side of sequence valve 8 connects blow vent CA, so the pressure set points of the sequence valve 8 are only
It is unrelated with pressure of the pretightning force of spring about and with secondary pipes.
Embodiment 5：
On the basis of embodiment 4, present embodiments provide a kind of conical degree of crystallizer and keep hydraulic control system online, also
Including the second check valve 202, the main hydraulic fluid port B of second check valve 202 rod end chamber with hydraulic cylinder 10, sequence valve 8 respectively
Pressure oil port P connections, the main hydraulic fluid port A of the second check valve 202 is connected with the main hydraulic fluid port A of the first check valve 201.
Second check valve 202 is used for the repairing effect of the rod end chamber of hydraulic cylinder 10, prevents the rod end chamber of hydraulic cylinder 10
Emptying phenomenon is produced, causes bad seals.
Embodiment 6：
On the basis of embodiment 5, present embodiments provide a kind of conical degree of crystallizer and keep hydraulic control system online, also
Including overflow valve 7, the pressure oil port P of the overflow valve 7 is connected with the plunger shaft of hydraulic cylinder 10, its oil return inlet T and first unidirectional
The main hydraulic fluid port A of valve 201 and the main hydraulic fluid port A of the second check valve 202 are connected.
Overflow valve 7 is used for the pressure protection of the plunger shaft of hydraulic cylinder 10, prevents because hypertonia causes the damage of hydraulic cylinder 10
It is bad.
Embodiment 7：
On the basis of embodiment 1, present embodiments provide a kind of conical degree of crystallizer and keep hydraulic control system online, institute
The plunger shaft for stating hydraulic cylinder 10 is connected with first pressure sensor 901, and the rod end chamber of the hydraulic cylinder 10 is connected with the second pressure
Force snesor 902, first pressure sensor 901 and second pressure sensor 902 are connected by cable with electrical control cabinet 12.
First pressure sensor 901 is used for the pressure value detection for detecting the plunger shaft of hydraulic cylinder 10, second pressure sensor 902
Pressure value detection for the rod end chamber of hydraulic cylinder 10.
Embodiment 8：
On the basis of embodiment 1-7 any embodiments, present embodiments provide a kind of conical degree of crystallizer and keep liquid online
Pressure control system, filter 1 is provided between the pressure oil port P and principal pressure pipeline PO of the solenoid directional control valve 4.
Filter 1 is used for the filtering of fluid, and because crystallizer is frequently necessary to offline maintenance, the dismounting of pipeline easily causes dirty
Thing enters in hydraulic system pipeline, sets filter 1 to prevent rear hydraulic component from causing card because dirt enters pipeline
Phenomenon is hindered, the oil cleanliness of the especially requirement of high frequency sound valve 5 is higher, prevents hydraulic component failure.
Embodiment 9：
On the basis of embodiment 8, present embodiments provide a kind of conical degree of crystallizer as shown in Figure 1 and keep hydraulic pressure online
Control system, ball valve 3 is provided between the principal pressure pipeline PO and main return line TO.
Ball valve 3 is used for the flushing and pressure release of pipeline, to the crystallizer that uses of newly reaching the standard grade, opens ball valve 3 and pipeline is rushed
Wash, prevent dirt from entering in the pipeline of rear portion；Meanwhile during detaching pipelines, the residual pressure in the energy discharge conduit of ball valve 3 is opened, is made
The dismounting of pipeline becomes simple and safe；Ball valve 3 is closed when being produced when flat.
In Fig. 1, P represents pressure oil port, and T represents oil return opening, and A represents main hydraulic fluid port, and B represents main hydraulic fluid port, and X represents control oil
Mouthful, Y represents drain tap, and CA represents blow vent, and S represents displacement signal, and I represents current signal.
In the state of accident, for example hydraulic oil source, hydraulic component or electrical system break down the present invention, and electromagnetism changes
Powered off to valve 4, high frequency sound valve 5, the first hydraulic control one-way valve 601 and the reliably automatic closing of the second hydraulic control one-way valve 602, hydraulic cylinder
10 position is reliably maintained at initial, set position.With the lasting progress of continuous casting steel machine operation, the hydraulic pressure on crystallizer top
Cylinder 10 bears extended state in the presence of the casting blank bulging power that crystallizer bottom foot roller is born, due to upper hydraulic cylinder 10
The cavity volume of rod end chamber is in the closed state of the second hydraulic control one-way valve 602, when pressure value reaches the setting value of sequence valve 8,
Sequence valve 8 acts, and the fluid of the rod end chamber of hydraulic cylinder 10 flows back to plunger shaft until sequence valve 8 is re-closing off, so as to ensure hydraulic pressure
The pressure of the rod end chamber of cylinder 10 is no more than setting value, avoids damaging the seal of hydraulic cylinder 10.
The electrical control cabinet that the present embodiment does not describe in detail belongs to prior art, the part that does not describe in detail, structure
And the well-known components or common structure and common knowledge of the method category industry, do not describe one by one here.
It is exemplified as above be only to the present invention for example, do not form the limitation to protection scope of the present invention, it is all
It is to be belonged to the same or analogous design of the present invention within protection scope of the present invention.
Claims (2)
1. a kind of conical degree of crystallizer keeps hydraulic control system online, it is characterised in that：Including solenoid directional control valve（4）, high frequency sound
Valve（5）, hydraulic cylinder（10）, the solenoid directional control valve（4）Pressure oil port P and principal pressure pipeline（PO）Connection, solenoid directional control valve
（4）Main hydraulic fluid port B and high frequency sound valve（5）Pressure oil port P connection, the high frequency sound valve（5）Main hydraulic fluid port A and hydraulic cylinder（10）
Plunger shaft connection, high frequency sound valve（5）Main hydraulic fluid port B and hydraulic cylinder（10）Rod end chamber connection, high frequency sound valve（5）Oil return
Mouth T and main return line（TO）It is connected；
The hydraulic cylinder（10）On displacement transducer is installed（11）, the displacement transducer（11）Pass through cable connection electrical control
Cabinet（12）, the high frequency sound valve（5）Built-in integrated form amplifier and solenoid directional control valve（4）Pass through cable and electrical control cabinet
（12）Connection；
The high frequency sound valve（5）Oil return inlet T and main return line（TO）Between be provided with the first check valve（201）, first list
To valve（201）Main hydraulic fluid port A respectively with solenoid directional control valve（4）Oil return inlet T, high frequency sound valve（5）Oil return inlet T connection, first is single
To valve（201）Main hydraulic fluid port B and main return line（TO）Connection；
The high frequency sound valve（5）Main hydraulic fluid port A and hydraulic cylinder（10）Plunger shaft between be provided with the first hydraulic control one-way valve（601）,
First hydraulic control one-way valve（601）Control port X and solenoid directional control valve（4）Main hydraulic fluid port B connections, the first hydraulic control one-way valve
（601）Drain tap Y and the first check valve（201）Main hydraulic fluid port A connections；
The high frequency sound valve（5）Main hydraulic fluid port B and hydraulic cylinder（10）Rod end chamber between be provided with the second hydraulic control one-way valve
（602）, second hydraulic control one-way valve（602）Control port X and solenoid directional control valve（4）Main hydraulic fluid port B connections, the second hydraulic control list
To valve（602）Drain tap Y and the first check valve（201）Main hydraulic fluid port A connections；
Sequence valve（8）Pressure oil port P and hydraulic cylinder（10）Rod end chamber connection, its oil return inlet T and hydraulic cylinder（10）Work
Plug chamber is connected, the sequence valve（8）Spring side connection blow vent CA；
Second check valve（202）Main hydraulic fluid port B respectively with hydraulic cylinder（10）Rod end chamber, sequence valve（8）Pressure oil port P connect
Connect, the second check valve（202）Main hydraulic fluid port A and the first check valve（201）Main hydraulic fluid port A connections；
Overflow valve（7）Pressure oil port P and hydraulic cylinder（10）Plunger shaft connection, its oil return inlet T and the first check valve（201）'s
Main hydraulic fluid port A and the second check valve（202）Main hydraulic fluid port A be connected；
The hydraulic cylinder（10）Plunger shaft be connected with first pressure sensor（901）, the hydraulic cylinder（10）Rod end chamber
It is connected with second pressure sensor（902）, first pressure sensor（901）With second pressure sensor（902）Pass through cable
With electrical control cabinet（12）Connection；
The solenoid directional control valve（4）Pressure oil port P and principal pressure pipeline（PO）Between be provided with filter（1）.
2. a kind of conical degree of crystallizer according to claim 1 keeps hydraulic control system online, it is characterised in that：The master
Pressure piping（PO）With main return line（TO）Between be provided with ball valve（3）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610184259.5A CN105757065B (en) | 2016-03-29 | 2016-03-29 | A kind of conical degree of crystallizer keeps hydraulic control system online |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610184259.5A CN105757065B (en) | 2016-03-29 | 2016-03-29 | A kind of conical degree of crystallizer keeps hydraulic control system online |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105757065A CN105757065A (en) | 2016-07-13 |
| CN105757065B true CN105757065B (en) | 2017-12-12 |
Family
ID=56345802
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610184259.5A Active CN105757065B (en) | 2016-03-29 | 2016-03-29 | A kind of conical degree of crystallizer keeps hydraulic control system online |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105757065B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113124009B (en) * | 2021-04-30 | 2022-02-22 | 中国重型机械研究院股份公司 | Load port flow pulse independent control digital hydraulic servo system and control method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201696385U (en) * | 2009-11-20 | 2011-01-05 | Abb技术股份有限公司 | Control valve device |
| CN203470892U (en) * | 2013-09-14 | 2014-03-12 | 中国重型机械研究院股份公司 | Stopper rod hydraulic control device |
| 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 |
| CN104832486A (en) * | 2015-05-14 | 2015-08-12 | 中国重型机械研究院股份公司 | Soft reduction hydraulic control device and soft reduction hydraulic control method for square (round) billet caster |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6226758B2 (en) * | 2014-01-22 | 2017-11-08 | 住友重機械工業株式会社 | Excavators and construction machinery |
-
2016
- 2016-03-29 CN CN201610184259.5A patent/CN105757065B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201696385U (en) * | 2009-11-20 | 2011-01-05 | Abb技术股份有限公司 | Control valve device |
| CN203470892U (en) * | 2013-09-14 | 2014-03-12 | 中国重型机械研究院股份公司 | Stopper rod hydraulic control device |
| 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 |
| CN104832486A (en) * | 2015-05-14 | 2015-08-12 | 中国重型机械研究院股份公司 | Soft reduction hydraulic control device and soft reduction hydraulic control method for square (round) billet caster |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105757065A (en) | 2016-07-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105650061B (en) | The Position of Hydraulic Cylinder system for tracking and control method of a kind of tape jam self diagnosis | |
| CN205478690U (en) | Tapering keeps hydraulic control device | |
| CN205330946U (en) | Compressor clearance tolerance governing system actuating mechanism's multiaction leak detection system | |
| CN105757065B (en) | A kind of conical degree of crystallizer keeps hydraulic control system online | |
| CN106812498A (en) | A kind of intelligent well completion downhole flow valve hydraulic control system | |
| CN205533544U (en) | Take fault self diagnosis's pneumatic cylinder position to follow system | |
| CN105781957A (en) | Multifunctional leakage monitoring system of executing mechanisms of compressor and clearance air flow regulation system | |
| CN103486092B (en) | A kind of hydraulic stopper rod control system | |
| CN205918670U (en) | Beat sign indicating number hydraulic press hydraulic control system | |
| CN103016780A (en) | Airbag valve | |
| CN105443466B (en) | Pipe straightener hydraulic control system for opening cylinder and upper roller compensating cylinder soon | |
| CN108672667A (en) | Low-power consumption hydraulic position holding system and control method with on-line proving function | |
| CN201014038Y (en) | Automatic control combined valve | |
| CN101658926B (en) | Hydraulic control system of tundish water gap of continuous casting machine | |
| CN105598334B (en) | A kind of hydraulic system of elastomeric material forging and stamping | |
| CN103899807A (en) | Low-maintenance type pressure relief/holding valve with spring arranged externally | |
| CN108302094B (en) | Hydraulic valve internal leakage detection device and method | |
| CN208518981U (en) | A kind of novel driven roller hydraulic control system | |
| CN103148245B (en) | Multifunctional electric control pressure release device, as well as electric control system and electric control method thereof | |
| CN208397035U (en) | A kind of hydraulic valve-regulated devices of test platform hydraulic station | |
| CN201543798U (en) | Continuous casting machine tundish nozzle hydraulic control system | |
| CN201543804U (en) | Continuous casting machine tundish hydraulic control system | |
| CN106402657B (en) | Different pressure gas pipeline network interworking unit | |
| CN204554951U (en) | A kind of constant pressure supply water system of solenoid control | |
| CN220365811U (en) | Double-cylinder pressure balance automatic compensation system of hydraulic hoist of sand flushing gate |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |