CN104745754B - Blast-furnace top distributing device hydraulic control circuit - Google Patents
Blast-furnace top distributing device hydraulic control circuit Download PDFInfo
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- CN104745754B CN104745754B CN201510187918.6A CN201510187918A CN104745754B CN 104745754 B CN104745754 B CN 104745754B CN 201510187918 A CN201510187918 A CN 201510187918A CN 104745754 B CN104745754 B CN 104745754B
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
- C21B7/18—Bell-and-hopper arrangements
- C21B7/20—Bell-and-hopper arrangements with appliances for distributing the burden
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Abstract
The invention discloses a kind of blast-furnace top distributing device hydraulic control circuit, the hydraulic control circuit includes that at least three fascinate hydraulic cylinder, the hydraulic cylinder that fascinates is provided with single close loop control circuit, the close loop control circuit of the hydraulic cylinder that fascinates is used for the dynamic Static Compensation Control for realizing Position of Hydraulic Cylinder in the independent position-force control of each hydraulic cylinder and distributing device motor process, the hydraulic control circuit also includes a switching circuit, the switching circuit is used to realize the automatic switchover between independent close-loop control mode and free synchronization control mode, the present invention has control accuracy high, synchronous error is few, the characteristics of reliance security is good, the requirement of suitable blast furnace roof high accuracy cloth, also free synchronization pattern can be switched on the basis of centralized Control loop is cancelled simultaneously.
Description
Technical field
The invention belongs to field of metallurgical machine, and in particular to a kind of hydraulic control circuit of blast-furnace top distributing device.
Background technology
The control of blast-furnace top distributing device is a key link of blast furnace burden distribution system, and its control accuracy is directly influenced
The cloth precision of blast furnace burden distribution system.Existing distributing device or the simple concentration hydraulic control method of employing, i.e., by one
Valve controls the action of multiple hydraulic cylinders, the hydraulic oil in multiple hydraulic cylinders can mutual vibration, or using being combined hydraulic control
Method, i.e., by three independent close loop control circuits for being used to control hydraulic cylinder, for realizing the independent position closed loop of each hydraulic cylinder
Three Position of Hydraulic Cylinder dynamic compesated controls in control and distributing device motor process, while concentrating hydraulic control to return comprising one
Road, realizes the automatic switchover of two kinds of hydraulic control circuits by a switching circuit.Concentrate under hydraulic control mode in former,
The control accuracy of distributing device depends primarily on the guide wheel being installed on backing ring and the gap that is installed between the guide rail on housing is big
It is little, therefore in order to improve the cloth precision of distributing device, the gap being mainly adjusted by between less guide rail and guide wheel at present comes real
It is existing, actually the method it is difficult to ensure that the precision of cloth, as the gap between guide rail and guide wheel reduces, can increase machining and
Assembly difficulty, improves manufacturing cost, while being also easy under the high temperature conditions cause distributing device stuck.Further, since under distributing device
There is unbalance loading in portion's load, cause distributing device backing ring under Driven by Hydraulic Cylinder all the time in alternation stress, exacerbate guide wheel and
Impact and abrasion between guide rail.Latter composite hydraulic control system can solve the problem that the problem for concentrating hydraulic control system, in work
Start to be widely applied in journey.But its loop is too complicated, relatively costly, control and maintenance are difficult.
The content of the invention
In view of this, it is an object of the invention to provide a kind of hydraulic control circuit of blast-furnace top distributing device, can overcome existing
There is the drawbacks described above of technology.
The purpose of the present invention is achieved through the following technical solutions：
A kind of blast-furnace top distributing device hydraulic control circuit, the hydraulic control circuit include that at least three fascinate hydraulic pressure
Cylinder, the hydraulic cylinder that fascinates are provided with single close loop control circuit, and the close loop control circuit of the hydraulic cylinder that fascinates is used for
Realize the dynamic Static Compensation Control of Position of Hydraulic Cylinder in the independent position-force control of each hydraulic cylinder and distributing device motor process, institute
Stating hydraulic control circuit also includes a switching circuit, and the switching circuit is used to realize that independent close-loop control mode is same with free
Automatic switchover between step control mode.
Further, the single close loop control circuit includes：Proportioning valve, the first hydraulic control one-way valve, the second hydraulic control one-way valve,
3rd hydraulic control one-way valve and reversal valve；Wherein, the P mouths of proportioning valve pass through the externally connected inflow pipeline of the first hydraulic control one-way valve,
The externally connected oil returning tube of T mouths of proportioning valve；The A mouths of proportioning valve are connected to the nothing of hydraulic cylinder after the second hydraulic control one-way valve
Rod cavity；The B mouths of proportioning valve are connected to the rod chamber of hydraulic cylinder after the 3rd hydraulic control one-way valve；The pressure oil of the P mouths of proportioning valve
Proportioning valve A mouths or B mouths are communicated to after the commutation of passing ratio valve, the P mouths of the reversal valve, T mouths are respectively connecting to outside oil inlet pipe
Road and outside oil returning tube, B mouths are connected to the control port of the first to the 3rd hydraulic control one-way valve, all first to the 3rd hydraulic control lists
To the externally connected draining pipeline L of drain tap of valve.
Further, the switching circuit includes：Switching electromagnetic cartridge valve；Cover plate inserted valve, the switching circuit pass through
The break-make of each hydraulic cylinder inlet and outlet of fuel channel of electromagnetic cartridge valve top dress direction valve commutation control.
Further, the single close loop control circuit includes：Proportioning valve and electromagnetic shut-off valve；Wherein, the P mouths of proportioning valve lead to
Cross the externally connected inflow pipeline of electromagnetic poppet valves, the externally connected oil returning tube of T mouths of proportioning valve；The A mouths of proportioning valve, B mouths
The rodless cavity and rod chamber of hydraulic cylinder are connected to by electromagnetic shut-off valve.
Further, the switching circuit is separately positioned on independent oil path block, including：Switching electromagnetic cartridge valve, lid
Plate inserted valve, can pass through the top dress direction valve of electromagnetic cartridge valve while the break-make of commutation control hydraulic cylinder inlet and outlet of fuel channel.
Further, the hydraulic cylinder that fascinates is additionally provided with pressure transducer and displacement transducer.
Further, each described close loop control circuit includes at least one security protection module：The safeguard protection mould
Block, for when hydraulic circuit breaks down, carrying out the work of corresponding draining and repairing.
The invention has the beneficial effects as follows：The present invention provides a kind of simple and reliable blast-furnace top distributing device hydraulic control and returns
Road, the system can be individually controlled with three (or multiple) hydraulic cylinders, with control accuracy it is high, synchronous error is few, reliability
The characteristics of safety is good, is adapted to the requirement of blast furnace roof high accuracy cloth, while also can be in the base for cancelling centralized Control loop
Free synchronization pattern is switched on plinth.
Present invention preserves all advantages of distributing device composite hydraulic control system：
(1), after using the system, the cloth precision of distributing device depends primarily on the control accuracy of hydraulic system, by triplex
Individually position-force control ensures the off-position precision of oil cylinder, while making three using Strategy For Synchronization Control under the conditions of closed loop control
Cylinder is in course of adjustment, drastically increase the cloth precision of distributing device, it is to avoid mechanical guide error affects
Cloth precision problem.
(2) position of three oil cylinders can be adjusted by independent closed loop control in good time, in the course of work, ensures that backing ring is basic
In horizontality, the impact and abrasion between guide wheel and guide rail is reduced.
(3) present invention devises switching circuit in the hydraulic control circuit, may be used also by the signal loop for detecting
To control to be changed under the two kinds of control models controlled with free synchronization in independent closed-loop synchronization automatically, so as to improve whole control
The reliability and security of system processed.
In addition, the present invention is different sides from prior art " a kind of composite hydraulic control system of blast-furnace top distributing device "
Case, its only one of which switching circuit, no centralized Control loop, it is possible to realize independent close loop control circuit and free synchronization control
Automatic switchover between loop processed.The present invention is adopted by cancelling the centralized Control loop in distributing device composite hydraulic control system
With newly-designed switching control loop, it is not only able to realize identical function, and realizes cutting with less element and loop
Change, reliability and safety are more preferably, more economical and practical.
Other advantages of the present invention, target and feature will be illustrated to a certain extent in the following description, and
And to a certain extent, based on being will be apparent to investigating hereafter to those skilled in the art, Huo Zheke
To be instructed from the practice of the present invention.The present invention target and other advantages can be realized by description below and
Obtain.
Description of the drawings
In order that the object, technical solutions and advantages of the present invention are clearer, below in conjunction with accompanying drawing the present invention is made into
The detailed description of one step, wherein：
Fig. 1 is the schematic diagram of the present invention；
Structural representations of the Fig. 2 for the embodiment of the present invention 1；
Structural representations of the Fig. 3 for the embodiment of the present invention 2.
Specific embodiment
Hereinafter with reference to accompanying drawing, the preferred embodiments of the present invention are described in detail.It should be appreciated that preferred embodiment
Only for the explanation present invention, rather than in order to limit the scope of the invention.
Embodiment 1, as shown in Figure 2：
Individually close loop control circuit is three groups：First group of independent close loop control circuit includes：The P mouths of proportioning valve 3.1 pass through
First hydraulic control one-way valve, 5.1 externally connected inflow pipeline, the externally connected oil returning tube of T mouths of proportioning valve 3.1；Proportioning valve
A mouths are connected to the rodless cavity of hydraulic cylinder 1.1 after passing through the second hydraulic control one-way valve 5.2；The B mouths of proportioning valve 3.1 pass through the 3rd hydraulic control
The rod chamber of hydraulic cylinder 1.1 is connected to after check valve 5.3；Connect after the pressure oil passing ratio valve commutation of the P mouths of proportioning valve 3.1
To proportioning valve A mouths or B mouths；Controller sends Proportional Valve-controlled by closed loop control computed in software after receiving command object signal
Signal processed, so as to realize the commutation and valve opening control of proportioning valve；The control realization of passing ratio valve is to 1.1 rodless cavity of hydraulic cylinder
Dynamic benefit, oil extraction with rod chamber, so that hydraulic cylinder 1.1 reaches and is maintained at target location.
Second group of independent close loop control circuit includes：The P mouths of proportioning valve 3.2 are connected to by the first check valve of hydraulic control 5.4
Outside inflow pipeline, the externally connected oil returning tube of T mouths of proportioning valve 3.2；The A mouths of proportioning valve 3.2 pass through the second fluid-control one-way
The rodless cavity of hydraulic cylinder 1.2 is connected to after valve 5.5；The B mouths of proportioning valve 3.2 are by being connected to liquid after the 3rd hydraulic control one-way valve 5.6
The rod chamber of cylinder pressure 1.2；
3rd group of independent close loop control circuit includes：The P mouths of proportioning valve 3.3 are connected to by the first hydraulic control one-way valve 3.7
Outside inflow pipeline, the externally connected oil returning tube of T mouths of proportioning valve 3.3；The A mouths of proportioning valve 3.3 pass through the second fluid-control one-way
The rodless cavity of hydraulic cylinder 1.3 is connected to after valve 5.8；The B mouths of proportioning valve 3.3 are by being connected to liquid after the 3rd hydraulic control one-way valve 5.9
The rod chamber of cylinder pressure 1.3；
Second independent close loop control circuit is identical with the control principle of the 3rd independent close loop control circuit, and here is no longer multiple
State.
Reversal valve 4.1；4.2；4.3 P mouths, T mouths are respectively connecting to outside inflow pipeline and outside oil returning tube, B mouths point
Hydraulic control one-way valve 5.1-5.3 is not connected to；5.4-5.6；The control port of 5.7-5.9；All hydraulic control one-way valve 5.1-5.9's lets out
The externally connected draining pipeline L of hydraulic fluid port；When independent closed loop control is needed, reversal valve 4.1-4.3 work, reversal valve 4.1；4.2；
4.3 hydraulic fluid port B has control pressure, so as to open 5.1-5.3 respectively；5.4-5.6；5.7-5.9 hydraulic control one-way valve.Due to per group of list
Solely control loop is all controlled the break-make of hydraulic control one-way valve by a reversal valve, therefore can be single during per group of independent control loop failure
Oil circuit on-bne repair are cut off solely.
Switching circuit is included：Switching electromagnetic cartridge valve 11.1；Cover plate inserted valve 12.1-12.3, can pass through 11.1
Top dress direction valve commutation, control A1, A2, A3 and B1, the break-make of B2, B3 oil circuit, so as to realize free synchronization control loop and list
The solely switching of close loop control circuit.
When the top dress direction valve of electromagnetic cartridge valve 11.1 obtains electric, inserted valve 11.1,12.1-12.3 are opened, A1, A2, A3
It is respectively turned on B1, B2, B3 oil circuit, any two loop works of proportioning valve 3.1-3.3, drives oil cylinder 1.1-1.3 actions, just
Realize free synchronization control.
Security protection module includes three groups：First group of security protection module includes：The entrance of safety overflow valve 10.1 and oil
Mouth A1 is connected, the outside oil returning tube of outlet connection；The entrance of safety overflow valve 10.2 is connected with hydraulic fluid port B1, and outlet connection is outside to return
Oil-piping.When hydraulic cylinder 1.1 is subject to foreign impacts or other failure causes to make, which has the trend stretched out or retract and pressure is more than
During safe pressure, cylinder chamber can carry out overflow pressure relief by the relief valve of this module.
The principle of second group, the 3rd group security protection module and effect are identical with first group, and here is not being repeated.
During normal work, A1, A2, A3 and B1, B2, B3 oil circuit are completely cut through and No leakage by switching circuit.Such three
Hydraulic cylinder carries out single position-force control by three groups of independent close loop control circuits, at the same time, same by the closed loop of triplex
Step control method ensures synchronization of the oil cylinder in motor process, so as to ensure position control that distributing device fascinates during cloth
Precision.
During cloth, if any one pressure transducer 6.1～6.6 on three oil cylinders and displacement transducer
7.1-7.3 occurs abnormal, that is, has exceeded certain error, will produce a synchronous error failure or oil circuit other therefore
Barrier signal；When control system detects this signal, system makes automatically the top of electromagnetic cartridge valve 11.1 fill direction valve and obtains electric,
A1, A2, A3 and B1, B2, B3 oil circuit are respectively turned on, and simultaneously close off arbitrary group of independent close loop control circuit, proportioning valve 3.1-3.3's
Any two loop works, drive oil cylinder 1.1-1.3 actions.Now only has an oil cylinder participant position closed loop control, three oily
The synchronization of cylinder is realized by mechanical guide. so, if entirely any one oil cylinder of cloth system occurs in that position with pressure
Abnormal, for safety assurance, hydraulic system automatically switches to free synchronization control loop, enables the oil circuit of three oil cylinders mutual
Connection, allows the oil liquid pressure can be with adaptive equalization, so as to avoid causing system due to interfering for oil cylinder or mechanical mechanism etc.
The destruction of weak link.The reliability and security of whole system is ensure that, is the safety in production and maintenance of cloth control system
There is provided guarantee.
Additionally, if in-oil cylinder oil pressure is because a variety of causes occurs superpressure or showing of being emptied in any link of cloth
As when, security protection module can carry out draining and repairing action to oil cylinder, play a part of safeguard protection, make whole system more
Plus it is reliable and secure.
The proportioning valve that the present invention is used can also be substituted with servo valve, stop valve can using inserted valve, hydraulic control one-way valve or
Solenoid seated valve etc., similar this conversion all fall within the scope and spirit of the invention.
Embodiment 2, as shown in Figure 3：
Individually close loop control circuit is three groups：First group of independent close loop control circuit includes：The P mouths of proportioning valve I 2.1 lead to
Cross 9.1 externally connected inflow pipeline of electromagnetic poppet valves, the externally connected oil returning tube of T mouths of proportioning valve I 2.1；Proportioning valve
A mouths, B mouths are connected to the rodless cavity and rod chamber of hydraulic cylinder 1.1 by electromagnetic shut-off valve 13.1；Controller receives command object
By closed loop control computed in software proportioning valve control signal after signal, so as to realize the commutation and valve opening control of proportioning valve；
The control realization of passing ratio valve is mended to the dynamic of 1.1 rodless cavity of hydraulic cylinder and rod chamber, oil extraction, so that hydraulic cylinder 1.1
Reach and be maintained at target location.
Second group of independent close loop control circuit includes：The P mouths of proportioning valve I 2.2 are connected to outer by electromagnetic poppet valves 9.2
Portion's inflow pipeline, the externally connected oil returning tube of T mouths of proportioning valve I 2.2；The A mouths of proportioning valve, B mouths pass through electromagnetic shut-off valve
13.2 rodless cavities and rod chamber for being connected to hydraulic cylinder 1.2；
3rd group of independent close loop control circuit includes：The P mouths of proportioning valve I 2.3 are connected to outer by electromagnetic poppet valves 9.3
Portion's inflow pipeline, the externally connected oil returning tube of T mouths of proportioning valve I 2.3；The A mouths of proportioning valve, B mouths pass through electromagnetic shut-off valve
13.3 rodless cavities and rod chamber for being connected to hydraulic cylinder 1.3；
Second independent close loop control circuit is identical with the control principle of the 3rd independent close loop control circuit, and here is no longer multiple
State.
When electromagnetic poppet valves 9.1,9.2,9.3 and electromagnetic shut-off valve 13.1,13.2,13.3 obtain electric, three ratios are respectively turned on
The each chamber oil circuits of example valve I 2.1,2.2,2.3：The oil-feed of proportioning valve is turned on principal pressure oil circuit, and oil return and the main system of proportioning valve are returned
Oil conducting, the A of three proportioning valves, B hydraulic fluid ports rodless cavity A1 respectively with corresponding oil cylinder, A2, A3 and rod chamber B1, B2, B3 conducting.
Switching circuit is separately positioned on three independent oil path blocks, is included：Switching electromagnetic cartridge valve I 17.1,
17.2,17.3；Cover plate inserted valve 15.1,15.2,15.3, can be filled by the top of switching electromagnetic cartridge valve I 17.1-17.3
Direction valve is commutated simultaneously, control A1, A2, A3 and B1, the break-make of B2, B3 oil circuit, so as to realize free synchronization control loop and list
The solely switching of close loop control circuit.
When the top dress direction valve of electromagnetic cartridge valve I 17.1-17.3 obtains electric, inserted valve 17.1-17.3,15.1-15.3 beat
Open, A1, A2, A3 and B1, B2, B3 oil circuit are respectively turned on, any two loop works of proportioning valve I 2.1-2.3, drive oil cylinder
1.1-1.3 action, is achieved that free synchronization control.
Security protection module includes three groups：First group of security protection module includes：Superposition format functional device 10.1 or so two
The overflow valve inlet of side and hydraulic fluid port A1, B1 are connected, and outlet works as hydraulic pressure by the outside oil returning tube of oil return opening connection on Sandwich plate valve
Cylinder 1.1 is subject to foreign impacts or other failure causes to make which have the trend stretched out or retracts and when pressure is more than safe pressure, cylinder
Chamber can carry out overflow pressure relief by the relief valve of this module.
The principle of second group, the 3rd group security protection module and effect are identical with first group, and here is not being repeated.
During normal work, A1, A2, A3 and B1, B2, B3 oil circuit are completely cut through and No leakage by switching circuit.Such three
Hydraulic cylinder carries out single position-force control by three groups of independent close loop control circuits, at the same time, same by the closed loop of triplex
Step control method ensures synchronization of the oil cylinder in motor process, smart so as to ensure the position that distributing device fascinates during cloth
Degree.
During cloth, if any one pressure transducer 6.1～6.6 on three oil cylinders and displacement transducer
8.1st, 8.2 or 8.3 there is exception, that is, have exceeded certain error, will produce a synchronous error failure or oil circuit
Other fault-signals；When control system detects this signal, system fills the top of electromagnetic cartridge valve I 17.1-7.3 automatically
Direction valve obtains electric, and A1, A2, A3 and B1, B2, B3 oil circuit are respectively turned on, and simultaneously closes off arbitrary group of independent close loop control circuit, ratio
Any two loop works of valve I 2.1-2.3, drive oil cylinder 1.1-1.3 actions.Now only have an oil cylinder participant position to close
Ring is controlled, and the synchronization of three oil cylinders is realized by mechanical guide. so, if entirely any one oil cylinder of cloth system is occurred in that
Position and the exception of pressure, for safety assurance, hydraulic system automatically switches to free synchronization control loop, makes three oil cylinders
Oil circuit can be interconnected, and make oil liquid pressure mutual due to oil cylinder or mechanical mechanism etc. so as to avoid with adaptive equalization
Interference causes the destruction of system weakness.The reliability and security of whole system is ensure that, is the peace of cloth control system
Full production is ensured with safeguarding to provide.
Additionally, if in-oil cylinder oil pressure is because a variety of causes occurs superpressure or showing of being emptied in any link of cloth
As when, security protection module can carry out draining and repairing action to oil cylinder, play a part of safeguard protection, make whole system more
Plus it is reliable and secure.
In addition, the present embodiment adopt in a large number the particular design of Sandwich plate valve and three groups of independence inserted valves cause three oil path blocks that
This independence, and three oil path block small volumes.Three oil path blocks can be separately mounted to beside three oil cylinders of distributing device, only be passed through
Pipeline connects, and which reduces the duct length between valve platform and oil cylinder, is conducive to improving synchronous control accuracy.
The proportioning valve that the present invention is used can also be substituted with servo valve, stop valve can using inserted valve, hydraulic control one-way valve or
Solenoid seated valve etc., similar this conversion all fall within the scope and spirit of the invention.
Finally illustrate, above example is only unrestricted to illustrate technical scheme, although with reference to compared with
Good embodiment has been described in detail to the present invention, it will be understood by those within the art that, can be to the skill of the present invention
Art scheme is modified or equivalent, and without deviating from the objective and scope of the technical program, which all should be covered in the present invention
Right in the middle of.
Claims (4)
1. a kind of blast-furnace top distributing device hydraulic control circuit, it is characterised in that：The hydraulic control circuit includes at least three
Fascinate hydraulic cylinder, and the hydraulic cylinder that fascinates is provided with single close loop control circuit, the closed loop control of the hydraulic cylinder that fascinates
Loop is used to realize that the sound state of Position of Hydraulic Cylinder in the independent position-force control of each hydraulic cylinder and distributing device motor process to be mended
Control is repaid, the hydraulic control circuit also includes a switching circuit, and the switching circuit is used to realize independent closed loop control side
Automatic switchover between formula and free synchronization control mode, the single close loop control circuit include：Proportioning valve（3.1）, first
Hydraulic control one-way valve（5.1）, the second hydraulic control one-way valve（5.2）, the 3rd hydraulic control one-way valve（5.3）And reversal valve（4.1）；Wherein, than
Example valve（3.1）P mouths pass through the first hydraulic control one-way valve（5.1）Externally connected inflow pipeline, proportioning valve（3.1）T mouths connection
To outside oil returning tube；Proportioning valve（3.1）A mouths pass through the second hydraulic control one-way valve（5.2）After be connected to hydraulic cylinder（1.1）Nothing
Rod cavity；Proportioning valve（3.1）B mouths pass through the 3rd hydraulic control one-way valve（5.3）After be connected to hydraulic cylinder（1.1）Rod chamber；Ratio
Valve（3.1）P mouths pressure oil passing ratio valve commutation after be communicated to proportioning valve A mouths or B mouths, the reversal valve（4.1）P
Mouth, T mouths are respectively connecting to outside inflow pipeline and outside oil returning tube, and B mouths are connected to the first to the 3rd hydraulic control one-way valve（5.1-
5.3）Control port, all first to the 3rd hydraulic control one-way valves（5.1-5.3）The externally connected draining pipeline L of drain tap,
The switching circuit includes：Switching electromagnetic cartridge valve（11.1）；Cover plate inserted valve（12.1-12.3）, the switching circuit lead to
Cross electromagnetic cartridge valve（11.1）The break-make of each hydraulic cylinder inlet and outlet of fuel channel of top dress direction valve commutation control, each described closed loop control are returned
Road includes at least one security protection module：The security protection module, for when hydraulic circuit breaks down, carrying out phase
The draining answered and the work of repairing.
2. blast-furnace top distributing device hydraulic control circuit according to claim 1, it is characterised in that：The single closed loop control
Loop processed includes：Proportioning valve I（2.1）And electromagnetic shut-off valve（13.1）；Wherein, proportioning valve I（2.1）P mouths by electromagnetism lifted
Valve（9.1）Externally connected inflow pipeline, proportioning valve I（2.1）The externally connected oil returning tube of T mouths；Proportioning valve I（2.1）A
Mouth, B mouths pass through electromagnetic shut-off valve（13.1）It is connected to hydraulic cylinder（1.1）Rodless cavity and rod chamber.
3. blast-furnace top distributing device hydraulic control circuit according to claim 1, it is characterised in that：The switching circuit point
It is not arranged on independent oil path block, including：Electromagnetic cartridge valve I is used in switching（17.1~17.3）, cover plate inserted valve（15.1~
15.3）, switching electromagnetic cartridge valve I can be passed through（17.1~7.3）Top dress direction valve simultaneously commutation control hydraulic cylinder enters fuel-displaced
The break-make on road.
4. blast-furnace top distributing device hydraulic control circuit according to claim 1, it is characterised in that：The hydraulic cylinder that fascinates
It is additionally provided with pressure transducer（6.1~6.6）And displacement transducer（7.1-7.3 and 8.1 ~ 8.3）.
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| CN201510187918.6A CN104745754B (en) | 2015-04-17 | 2015-04-17 | Blast-furnace top distributing device hydraulic control circuit |
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| CN201510187918.6A CN104745754B (en) | 2015-04-17 | 2015-04-17 | Blast-furnace top distributing device hydraulic control circuit |
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| CN108796158A (en) * | 2018-09-13 | 2018-11-13 | 中冶东方工程技术有限公司 | Distributing device with interlocking hydraulic control system |
| CN114410868B (en) * | 2022-01-23 | 2023-05-30 | 中钢集团西安重机有限公司 | Blast furnace top material flow regulation control system and method |
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| CN204625669U (en) * | 2015-04-17 | 2015-09-09 | 中冶赛迪工程技术股份有限公司 | Blast-furnace top distributing device hydraulic control circuit |
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| CN101725581B (en) * | 2009-11-24 | 2013-04-17 | 中冶赛迪工程技术股份有限公司 | Composite hydraulic control system of blast-furnace top distributing device |
| CN103740878B (en) * | 2013-12-24 | 2015-07-08 | 江苏永钢集团有限公司 | Material distribution control device for furnace top of blast furnace |
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| CN204625669U (en) * | 2015-04-17 | 2015-09-09 | 中冶赛迪工程技术股份有限公司 | Blast-furnace top distributing device hydraulic control circuit |
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