CN108359788A - Pneumatic servo control system and tension stabilizing device - Google Patents
Pneumatic servo control system and tension stabilizing device Download PDFInfo
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- CN108359788A CN108359788A CN201810368963.5A CN201810368963A CN108359788A CN 108359788 A CN108359788 A CN 108359788A CN 201810368963 A CN201810368963 A CN 201810368963A CN 108359788 A CN108359788 A CN 108359788A
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- 230000000087 stabilizing effect Effects 0.000 title claims abstract description 80
- 238000000137 annealing Methods 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 230000001914 calming effect Effects 0.000 claims description 3
- 230000003139 buffering effect Effects 0.000 claims 1
- 229910000831 Steel Inorganic materials 0.000 abstract description 8
- 239000010959 steel Substances 0.000 abstract description 8
- 238000010438 heat treatment Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 13
- 230000008569 process Effects 0.000 description 12
- 238000004519 manufacturing process Methods 0.000 description 9
- 238000005246 galvanizing Methods 0.000 description 5
- 230000005611 electricity Effects 0.000 description 4
- 238000003860 storage Methods 0.000 description 4
- 239000012535 impurity Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 229910000976 Electrical steel Inorganic materials 0.000 description 1
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000010977 unit operation Methods 0.000 description 1
- 230000037303 wrinkles Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
- C21D9/54—Furnaces for treating strips or wire
- C21D9/56—Continuous furnaces for strip or wire
- C21D9/562—Details
- C21D9/564—Tension control
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/26—Methods of annealing
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The present invention relates to a kind of Pneumatic Servo Control System and tension stabilizing devices, belong to cold-strip steel technical field of heat treatment.Pneumatic Servo Control System is connect applied to the stokehold tension for stablizing strip, including pressure charging valve, the first voltage stabilizing gas tank, the first solenoid valve, electric Proportion valve, guide electromagnetic valve, second solenoid valve, the second voltage stabilizing gas tank and cylinder, pressure charging valve with inlet air source；Connecting line is provided between inlet air source and pressure charging valve, connecting line is connected to inlet air source and electric Proportion valve respectively, and second solenoid valve is located at the second voltage stabilizing gas tank in the gas circuit of guide electromagnetic valve and cylinder.This Pneumatic Servo Control System can stabilize rapidly strip tension fluctuation, improve the precision and stability of strip tension control, to improve product quality, again because of Pneumatic Servo Control System participation unit master control thus, the variation that strip steel specification can be produced according to unit adjusts setup parameter in real time, and the control of strip tension is enable to keep dynamic equilibrium.
Description
Technical field
The present invention relates to cold-strip steel technical field of heat treatment, in particular to a kind of Pneumatic Servo Control System and
Tension stabilizing device.
Background technology
The stability contorting of strip tension influences very the normal production and the control of product quality of galvanizing unit in annealing furnace
Greatly.The fluctuation of strip tension gently then causes strip fold in stove, heavy then broken belt in stove, unit is caused to stop production.Strip in usual stove
Tension is generated by hot idler roller interaction in stokehold jockey pulley and stove, and stokehold is additionally provided with survey meter, monitors strip in real time
Power, and detected value can be automatically fed to the speed-torque control system of stokehold tension roller motor online, it is opened in closed loop regulating stove
Power maintains tension stability.The system can be met the requirements on the not high building board galvanizing unit of tension force required precision.
And for the high requests unit such as appliance plate, electrical sheet, production board shape requires and surface quality requirements are above building board, therefore wants
It asks the control of stove internal tension more accurate and stablizes.
In the prior art continuous galvanizing line by hot idler roller in stokehold jockey pulley and stove to strip tension in annealing furnace into
Row control.There are the following problems for this control model：
1. tension force precision and stability cannot be satisfied the requirement of prior art technology when acceleration and deceleration and steady-state operation；
2. due to there is no dynamic servo systems stabilisation, caused by plate shape problem, the strip steel specification of strip such as change at the factors
Strip tension fluctuates, and only leans on jockey pulley and surveys the control of a roller, dynamically can not adjust to form dynamic balance in time, at this moment to band steel band
Carry out tension impact, broken belt accident in stove, unit operation poor reliability may be caused.
Invention content
It is an object of the invention in view of the above-mentioned problems, provide a kind of Pneumatic Servo Control System and tension stabilizing device,
For controlling stokehold buffer roll adjust automatically and stablizing stokehold strip tension, reduce because the strip that strip tension wave zone comes rises
The problems such as wrinkle, broken belt, improves product quality and unit productivity, the above problem is made to be improved.
It is another object of the present invention to provide a kind of tension stabilizing devices, improve the tension stability of strip annealing,
Improve production efficiency.
The invention is realized in this way：
The embodiment provides a kind of Pneumatic Servo Control Systems, applied to the stokehold tension for stablizing strip, packet
Include pressure charging valve, the first voltage stabilizing gas tank, the first solenoid valve, electric Proportion valve, guide electromagnetic valve, second solenoid valve, the second voltage stabilizing
Gas tank and cylinder, the pressure charging valve are connect with inlet air source；
The inlet air source, the pressure charging valve, the first voltage stabilizing gas tank, first solenoid valve, the electrical ratio
Valve, the guide electromagnetic valve and the cylinder are sequentially connected, and connection is provided between the inlet air source and the pressure charging valve
Pipeline, the connecting line are connected to the inlet air source and the electric Proportion valve respectively, the second solenoid valve with it is described
Second voltage stabilizing gas tank is located in the gas circuit of the guide electromagnetic valve and the cylinder, and the second solenoid valve is relative to described
Two voltage stabilizing gas tanks are close to the guide electromagnetic valve or the cylinder.
It is the inlet air source, the pressure charging valve, the first voltage stabilizing gas tank, described in optional embodiment of the present invention
First solenoid valve, the electric Proportion valve, the guide electromagnetic valve and the cylinder are sequentially connected the first gas circuit of composition, described
Inlet air source, the connecting line, the electric Proportion valve, the guide electromagnetic valve, the second solenoid valve, described second
Voltage stabilizing gas tank is sequentially connected the second gas circuit of composition.
In optional embodiment of the present invention, the outlet side of first solenoid valve is connected with pressure reducing valve, the pressure reducing valve
The first check valve is provided between the electric Proportion valve, first check valve is for preventing gas by the electrical ratio
Valve and/or the connecting line flow to the pressure reducing valve.
In optional embodiment of the present invention, the outlet side of the inlet air source is provided with air source processing unit and residual voltage is released
Valve is put, the air source processing unit is used to filter the gas that the inlet air source provides, and the residual voltage relief valve is managed for discharging
Residual gas pressure in road.
In optional embodiment of the present invention, the connecting line is provided with the second check valve, and second check valve is used
The inlet air source is flowed to by the electric Proportion valve in preventing gas.
In optional embodiment of the present invention, the inlet end of the electric Proportion valve is provided with filter.
In optional embodiment of the present invention, the first voltage stabilizing gas tank and the second voltage stabilizing gas tank are both provided with pressure
Relief valve, pressure gauge, muffler and water trap.
In optional embodiment of the present invention, pressure sensing is provided between the guide electromagnetic valve and the cylinder
Device, the pressure sensor are used to detect the air pressure of the cylinder, are set between the electric Proportion valve and the pressure sensor
It is equipped with electrically-controlled component, the electrically-controlled component is used to control the electric Proportion valve according to the electric signal that the pressure sensor detects
Working condition.
In optional embodiment of the present invention, the rated pressure of the first voltage stabilizing gas tank is 0.6-1.2MPa, described the
The rated pressure of two voltage stabilizing gas tanks is 0.1-0.8MPa.
The embodiments of the present invention also provide a kind of tension stabilizing devices, including buffer roll and above-mentioned pneumatic servo control
System, the buffer roll, which is located to survey, opens between roller and stokehold jockey pulley, and strip is through the stokehold jockey pulley, the buffer roll and institute
It states survey roller and enters annealing furnace, the cylinder is connect with the buffer roll and the cylinder can drive the buffer roll along strip
It moves in the direction of advance.
Compared with prior art, beneficial effects of the present invention are：
This Pneumatic Servo Control System can stabilize rapidly strip tension fluctuation, improve the precision of strip tension control and steady
It is qualitative, to improve product quality, and because of Pneumatic Servo Control System participation unit master control thus, band can be produced according to unit
The variation of steel specification adjusts setup parameter in real time, and the control of strip tension is enable to keep dynamic equilibrium.
Description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached
Figure is briefly described, it should be understood that the following drawings illustrates only certain embodiments of the present invention, therefore is not construed as pair
The restriction of range for those of ordinary skill in the art without creative efforts, can also be according to this
A little attached drawings obtain other relevant attached drawings.
Fig. 1 is the structure diagram for the Pneumatic Servo Control System that first embodiment of the invention provides；
Fig. 2 is the force analysis figure of cylinder；
Fig. 3 is self-servocontrol fate map；
Fig. 4 is the structural schematic diagram for the tension stabilizing device that second embodiment of the invention provides.
Icon：100- Pneumatic Servo Control Systems；1- inlet air sources；2- air source processing units；3- residual voltage relief valves；4- increases
Pressure valve；5- the first voltage stabilizing gas tanks；The first solenoid valves of 6-；7- pressure reducing valves；8- filters；9- electric Proportion valves；10- guide type electromagnetics
Valve；11- second solenoid valves；12- the second voltage stabilizing gas tanks；13- pressure sensors；14- cylinders；The first check valves of 15-；16- second
Check valve；17- pressure relief valves；18- pressure gauges；19- mufflers；20- water traps；21- connecting lines；22- buffer rolls；23-
Stokehold jockey pulley；24- surveys a roller；25- annealing furnaces.
Specific implementation mode
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.The present invention being usually described and illustrated herein in the accompanying drawings is implemented
The component of example can be arranged and be designed with a variety of different configurations.
Therefore, below the detailed description of the embodiment of the present invention to providing in the accompanying drawings be not intended to limit it is claimed
The scope of the present invention, but be merely representative of the present invention selected embodiment.Based on the embodiments of the present invention, this field is common
The every other embodiment that technical staff is obtained without creative efforts belongs to the model that the present invention protects
It encloses.
It should be noted that：Similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined, then it further need not be defined and explained in subsequent attached drawing in a attached drawing.
In the description of the present invention, it should be noted that the orientation or positional relationship of the instructions such as term "inner", "outside" is base
In orientation or positional relationship shown in the drawings or the invention product using when the orientation or positional relationship usually put, only
It is that for convenience of description of the present invention and simplification of the description, not indicating or implying the indicated device or element must have specifically
Orientation, with specific azimuth configuration and operation, therefore be not considered as limiting the invention.In addition, term " first ", " the
Two " etc. are only used for distinguishing description, are not understood to indicate or imply relative importance.
In the description of the present invention, it is also necessary to which explanation is unless specifically defined or limited otherwise, term " setting ",
" connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；Can be
Mechanical connection can also be electrical connection；It can be directly connected, can also can be indirectly connected through an intermediary two
Connection inside element.For the ordinary skill in the art, above-mentioned term can be understood in the present invention with concrete condition
In concrete meaning.
First embodiment
Fig. 1 is please referred to, the present embodiment provides a kind of Pneumatic Servo Control Systems 100, applied to the stokehold for stablizing strip
Power, including pressure charging valve 4, the first voltage stabilizing gas tank 5, the first solenoid valve 6, electric Proportion valve 9, guide electromagnetic valve 10, the second electromagnetism
Valve 11, the second voltage stabilizing gas tank 12 and cylinder 14.
As shown in Figure 1, in the present embodiment, the inlet end of pressure charging valve 4 is connected with inlet air source 1, and inlet air source 1 provides gas
Body；Inlet air source 1, pressure charging valve 4, the first voltage stabilizing gas tank 5, the first solenoid valve 6, electric Proportion valve 9, guide electromagnetic valve 10 and gas
Cylinder 14 is sequentially connected the first gas circuit of composition, and the gas that inlet air source 1 provides enters cylinder 14 after the first voltage stabilizing gas tank 5, for gas
Cylinder 14 is inflated, meanwhile, the first voltage stabilizing gas tank 5 also has the function of gas storage, when hypotony needs fast pressurization in cylinder 14,
First voltage stabilizing gas tank 5 can be that cylinder 14 is inflated；Connecting line 21, connecting line are provided between inlet air source 1 and pressure charging valve 4
21 both ends are connected to inlet air source 1 and electric Proportion valve 9 respectively, and the gas of inlet air source 1 can be direct through connecting line 21
Into electric Proportion valve 9, hence into cylinder 14；Second solenoid valve 11 and the second voltage stabilizing gas tank 12 are set to guide electromagnetic valve
Between 10 and cylinder 14, second solenoid valve 11 is relative to the second voltage stabilizing gas tank 12 close to guide electromagnetic valve 10 or cylinder 14, gas
Body can enter the second voltage stabilizing gas tank 12 through guide electromagnetic valve 10, second solenoid valve 11, and the second voltage stabilizing gas tank 12 has gas storage
Function, meanwhile, the second voltage stabilizing gas tank 12 can also be that cylinder 14 is inflated；It is electrical to compare when 14 pressure of cylinder is excessive needs off-load
Example valve 9 and second solenoid valve 11 power off, and the gas in cylinder 14 drains into air through guide electromagnetic valve 10.Cylinder 14 and electrical ratio
Pressure sensor 13 and electrically-controlled component (PLC) are provided between example valve 9, pressure sensor 13 is used to detect the pressure in cylinder 14
Power, and electric signal is transferred to electrically-controlled component, electrically-controlled component controls the working condition of electric Proportion valve 9 according to electric signal.It is automatically controlled
The setting of component improves the degree of automation of the Pneumatic Servo Control System 100 so that control is more accurate, improves production
Efficiency.
Below the concrete structure to all parts of the Pneumatic Servo Control System 100 and mutual position relationship into
Row is described in detail.
Inlet air source 1 provides air source for system, can be with the large-scale gas storage equipment such as air compression station, or compressed air
Machine etc., user choose inlet air source 1 according to actual conditions.
In order to improve the quality of air in pipeline, the operation of impurity effect equipment, the outlet side setting of inlet air source 1 are avoided
There is air source processing unit 2, the gas that air source processing unit 2 provides inlet air source 1 is filtered, impurity is retained, to make
The gas that system pipeline must be entered is clean.
For the ease of overhaul of the equipments or maintenance, the outlet side of inlet air source 1 is provided with residual voltage relief valve 3, residual voltage relief valve 3
It is disposed adjacent with air source processing unit 2, residual voltage relief valve 3 can be released effectively the residual gas pressure in pipeline, ensure equipment
And personnel safety.
Inlet air source 1, pressure charging valve 4, the first voltage stabilizing gas tank 5, the first solenoid valve 6, electric Proportion valve 9, guide electromagnetic valve
10 and cylinder 14 be sequentially connected the first gas circuit of composition, outlet side (close to one end of electric Proportion valve 9) connection of the first solenoid valve 6
There is pressure reducing valve 7.Pressure reducing valve 7 is used to the pressure of the gas conveyed by the first voltage stabilizing gas tank 5 being depressurized to required pressure.
In order to improve the working efficiency of the first voltage stabilizing gas tank 5 and the second voltage stabilizing gas tank 12, the first voltage stabilizing gas tank 5 and second is steady
Tank 12 of calming the anger is both provided with pressure relief valve 17, pressure gauge 18, muffler 19 and water trap 20, and pressure relief valve 17 is for discharging
Air pressure in first voltage stabilizing gas tank 5 (or second voltage stabilizing gas tank 12), pressure gauge 18 is for detecting the first voltage stabilizing gas tank 5 (or second
Voltage stabilizing gas tank 12) in pressure, muffler 19 for eliminate the first voltage stabilizing gas tank 5 (or second voltage stabilizing gas tank 12) release gas when
The noise of generation, the water that water trap 20 is used to be discharged in the first voltage stabilizing gas tank 5 (or second voltage stabilizing gas tank 12).Meanwhile in order to more
The function of good the first voltage stabilizing of realization gas tank 5 and the second voltage stabilizing gas tank 12, can be with components such as configuration cuts valves on pipeline.
In order to improve the quality for entering gas (compressed air) in electric Proportion valve 9, set in the inlet end of electric Proportion valve 9
Be equipped with filter 8, gas after pressure charging valve 4, the first voltage stabilizing gas tank 5, the first solenoid valve 6, pressure reducing valve 7, gaseous mass be less than into
The quality for the gas that gas air source 1 provides, filter 8 can effectively come the impurity in gas, improve gaseous mass so that clean
Gas enter electric Proportion valve 9, improve the service life of subsequent parts in electric Proportion valve 9 and pipeline.
Be provided with connecting line 21 between inlet air source 1 and pressure charging valve 4, the both ends of connecting line 21 respectively with inlet air source
1 is connected to electric Proportion valve 9, is equivalent to connecting line 21 and pressure charging valve 4, the pipeline of the first voltage stabilizing gas tank 5 and the first solenoid valve 6
It is in parallel.Second solenoid valve 11 and the second voltage stabilizing gas tank 12, the second electricity are provided in the gas circuit of guide electromagnetic valve 10 and cylinder 14
Magnet valve 11 is relative to the second voltage stabilizing gas tank 12 close to guide electromagnetic valve 10 or cylinder 14.Inlet air source 1, connecting line 21, electricity
Gas proportioning valve 9, guide electromagnetic valve 10, second solenoid valve 11, the second voltage stabilizing gas tank 12 are sequentially connected the second gas circuit of composition.
Be provided with the first check valve 15 between pressure reducing valve 7 and electric Proportion valve 9, the first check valve 15 for prevent gas by
Electric Proportion valve 9 and/or connecting line 21 flow to pressure reducing valve 7.Connecting line 21 is provided with the second check valve 16, the second check valve
16 for preventing gas from flowing to inlet air source 1 by electric Proportion valve 9 and/or pressure reducing valve 7.Inlet air source 1, connecting line 21, electricity
Gas proportioning valve 9, guide electromagnetic valve 10, second solenoid valve 11, the second voltage stabilizing gas tank 12 are sequentially connected the second gas circuit of composition.
First gas circuit is two different gas circuits from the second gas circuit, but section components share, can be according to different valves
Opening and closing realize different function.When the first solenoid valve 6 powers off, the first gas circuit disconnects, and the gas of inlet air source 1 enters first
In voltage stabilizing gas tank 5, inflated for the first voltage stabilizing gas tank 5；When the first solenoid valve 6 is powered, electric Proportion valve 9 is powered, the first gas circuit
It is connected to, the gas in the first voltage stabilizing gas tank 5 enters through the first gas circuit in cylinder 14, is inflated for cylinder 14.When electric Proportion valve 9 is logical
When electricity, second solenoid valve 11 are powered, the second gas circuit connection, the gas that inlet air source 1 provides divides after guide electromagnetic valve 10
For two-way, enter in cylinder 14 all the way, in addition continues to enter in the second voltage stabilizing gas tank 12 along the second gas circuit all the way, at this point, second
The first gas circuit of gas circuit bound fraction is that cylinder 14 and the second voltage stabilizing gas tank 12 are inflated.When the power-off of the first solenoid valve 6, electric Proportion valve
When 9 are powered, second solenoid valve 11 powers off, at this point, the first gas circuit of part is connected to the second gas circuit of part, inlet air source 1 is cylinder
14 inflations.When the power-off of electric Proportion valve 9, second solenoid valve 11 power off, the gas in cylinder 14 is through 10 row of guide electromagnetic valve
Go out.
As the optional mode of the present embodiment, the rated voltage of the first voltage stabilizing gas tank 5 is 0.6-1.2MPa, the second voltage stabilizing gas
The rated voltage of tank 12 is 0.1-0.8MPa.First voltage stabilizing gas tank 5 and the second voltage stabilizing gas tank 12 are caisson, can be stored
Gas is inflated for cylinder 14；The pressure that second voltage stabilizing gas tank 12 can be discharged with storage cylinder 14.
In the present embodiment, pressure sensor 13, pressure sensor are provided between guide electromagnetic valve 10 and cylinder 14
13 are same as the pressure of detection cylinder 14.Electrically-controlled component (PLC) is provided between electric Proportion valve 9 and pressure sensor 13, it is automatically controlled
Component is electrically connected with electric Proportion valve 9 and pressure sensor 13 respectively, what electrically-controlled component was used to be detected according to pressure sensor 13
Electric signal controls the working condition of electric Proportion valve 9.When pressure sensor 13 detects that cylinder 14 needs to inflate (the pressure of cylinder 14
Power is less than preset value) when, electrically-controlled component controls electric Proportion valve 9 and is powered, and gas enters cylinder 14 by electric Proportion valve 9；Work as pressure
When force snesor 13 detects that cylinder 14 needs off-load (pressure of cylinder 14 is more than preset value), electrically-controlled component controls electrical ratio
Valve 9 powers off, and the gas in cylinder 14 drains into air through guide electromagnetic valve 10.
The Pneumatic Servo Control System 100 is applied to the tension stability of stokehold strip, is connect with buffer roll, slow for controlling
The tension adjustment of strip is realized in the movement for rushing roller.Equilibrium equation (as shown in Figure 2) is：
Cylinder F1=load thrust F2=strip tension T × 2+ system frictional forces f；
14 piston area S of cylinder F1=cylinders × 14 intracavitary air pressure P of cylinder.
In the case where cylinder 14 is constant, by adjusting the air pressure in cylinder 14, the adjusting of cylinder F1 may be implemented.
The operation principle of the embodiment of the present invention is：
In stable operation of unit, system enters self-servocontrol process, automatically switches inflation process and cylinder 14 unloads
Lotus carries out, and keeps cylinder F1 and load thrust F2 to be balanced at setting pressure, strip tension is maintained to stablize；Strip is produced in unit
When specification changes, thrust needed for cylinder 14 is calculated according to relevant parameter, resets pressure value when balance, made cylinder 14 and bear
Thrust is carried to balance at new settings pressure.
Inflation process：At this point, residual voltage relief valve 3 is switched to air inlet, electric Proportion valve 9 is opened, and the first solenoid valve 6 is closed,
Compressed air is divided into two-way after the filtering of air source processing unit 2 into residual voltage relief valve 3：It is steady to first by pressure charging valve 4 all the way
Tank 5 of calming the anger is inflated；It is inflated all the way to cylinder 14 by electric Proportion valve 9 and guide electromagnetic valve 10 after the filtering of filter 8,
It can also be inflated simultaneously to the second voltage stabilizing gas tank 12 by second solenoid valve 11.
14 off-load process of cylinder：Electric Proportion valve 9 and second solenoid valve 11 are closed at this time, and guide electromagnetic valve 10 is switched to
14 intracavity gas pressure of cylinder is discharged into air by exhaust, cylinder 14 by guide electromagnetic valve 10.
Self-servocontrol process (as shown in Figure 3)：Electric Proportion valve 9 participates in control at this time, when strip tension fluctuation is drawn
Load thrust F2 is played when fluctuating, system switches between 14 off-load process of inflation process and cylinder automatically：When strip tensioning is drawn
When playing load thrust F2 more than cylinder F1,14 piston of cylinder is compressed, while 14 intracavitary air pressure P of cylinder gradually increases, and works as pressure
When sensor 13 detects that 14 intracavitary air pressure P of cylinder is more than setting pressure, 14 off-load process of cylinder, 14 chamber of cylinder are automatically switched to
Interior air pressure P starts to reduce；Simultaneously as the rollback of 14 piston of cylinder discharges strip load thrust F2 is gradually reduced, quickly gas
Cylinder 14 and load are returned to again on the equalization point of setting value.When strip fluffs, and load thrust F2 is caused to be less than cylinder F1, this
When 14 piston of cylinder push ahead, while 14 intracavitary air pressure P of cylinder is gradually reduced, when pressure sensor 13 detects 14 chamber of cylinder
When interior air pressure P is less than setting pressure, the 14 inflation process of cylinder controlled with electric Proportion valve 9,14 intracavitary of cylinder are automatically switched to
Air pressure P starts to be gradually increasing, simultaneously as the propulsion tensioning strip of 14 piston of cylinder makes load thrust F2 gradually increase, quickly
Cylinder 14 and load are returned to again on the equalization point of setting value.
Actively adjust process：According to the variation of strip steel specification, need to adjust strip tension T, at this time according to equilibrium equation
Required 14 cavity pressure P2 of cylinder is calculated, new pressure value is set, system automatically controls switching inflation process and cylinder 14
Off-load process makes 14 cavity pressure of cylinder stablize in P2, to which cylinder 14 and load thrust reach new equilibrium state.
The Pneumatic Servo Control System 100 can be used for continuous hot galvanizing, continuous decarburizing annealing and silicon steel insulating coating etc.
On unit equipment, mainly increase the strip tension stabilization technique for participating in unit master control on the basis of existing, in addition to that can be to be carried in stove
It is cut for precision height outside stable strip tension, moreover it is possible to which the labor intensity for reducing operating personnel improves production operation environment, improves
There is high product promotion to be worth for unit product quality and unit productivity.
Second embodiment
It please refers to shown in Fig. 4, the present embodiment provides a kind of tension stabilizing devices, including buffer roll 22 and first embodiment to carry
The Pneumatic Servo Control System 100 of confession.
In galvanizing unit, the control of strip steel furnace forward pull is particularly significant, and the present embodiment is in stokehold jockey pulley 23 and survey
Buffer roll 22 is provided between roller 24, strip is through stokehold jockey pulley 23, buffer roll 22 and surveys a roller 24 into annealing furnace 25, cylinder
14 connect with buffer roll 22, and cylinder 14 can drive buffer roll 22 to be moved along the direction of advance of strip.That is, strip
Tension adjustment controlled by the flexible of cylinder 14.
The setting of tension stabilizing device improves manufacture automatic control degree using Pneumatic Servo Control System 100,
The tension force of strip is more accurate, improves production efficiency, moreover it is possible to which the labor intensity that can reduce operating personnel improves production and makees
Industry environment improves unit product quality and unit productivity, and there is high product promotion to be worth.
It should be noted that in the absence of conflict, the feature in embodiment in the present invention can be combined with each other.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, any made by repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of Pneumatic Servo Control System, applied to the stokehold tension for stablizing strip, which is characterized in that including pressure charging valve,
One voltage stabilizing gas tank, the first solenoid valve, electric Proportion valve, guide electromagnetic valve, second solenoid valve, the second voltage stabilizing gas tank and cylinder,
The pressure charging valve is connect with inlet air source；
The inlet air source, the pressure charging valve, the first voltage stabilizing gas tank, first solenoid valve, the electric Proportion valve, institute
It states guide electromagnetic valve and the cylinder is sequentially connected, connecting line is provided between the inlet air source and the pressure charging valve,
The connecting line is connected to the inlet air source and the electric Proportion valve respectively, and the second solenoid valve is steady with described second
Tank of calming the anger is located in the gas circuit of the guide electromagnetic valve and the cylinder, and the second solenoid valve is relative to second voltage stabilizing
Gas tank is close to the guide electromagnetic valve or the cylinder.
2. Pneumatic Servo Control System according to claim 1, which is characterized in that the inlet air source, the pressure charging valve,
The first voltage stabilizing gas tank, first solenoid valve, the electric Proportion valve, the guide electromagnetic valve and the cylinder are successively
Connection the first gas circuit of composition, the inlet air source, the connecting line, the electric Proportion valve, the guide electromagnetic valve, institute
State second solenoid valve, the second voltage stabilizing gas tank is sequentially connected the second gas circuit of composition.
3. Pneumatic Servo Control System according to claim 1, which is characterized in that the outlet side of first solenoid valve connects
It is connected to pressure reducing valve, the first check valve is provided between the pressure reducing valve and the electric Proportion valve, first check valve is used for
Prevent gas from flowing to the pressure reducing valve by the electric Proportion valve and/or the connecting line.
4. Pneumatic Servo Control System according to claim 1, which is characterized in that the outlet side of the inlet air source is arranged
There are air source processing unit and residual voltage relief valve, the air source processing unit to be used to filter the gas that the inlet air source provides, institute
Residual voltage relief valve is stated for the residual gas pressure in discharge conduit.
5. Pneumatic Servo Control System according to claim 1, which is characterized in that it is single that the connecting line is provided with second
To valve, second check valve is for preventing gas from flowing to the inlet air source by the electric Proportion valve.
6. Pneumatic Servo Control System according to claim 1, which is characterized in that the inlet end of the electric Proportion valve is set
It is equipped with filter.
7. Pneumatic Servo Control System according to claim 1, which is characterized in that the first voltage stabilizing gas tank and described
Two voltage stabilizing gas tanks are both provided with pressure relief valve, pressure gauge, muffler and water trap.
8. Pneumatic Servo Control System according to claim 1, which is characterized in that the guide electromagnetic valve and the gas
Be provided with pressure sensor between cylinder, the pressure sensor is used to detect the air pressure of the cylinder, the electric Proportion valve with
Electrically-controlled component, the telecommunications that the electrically-controlled component is used to detect according to the pressure sensor are provided between the pressure sensor
The working condition of number control electric Proportion valve.
9. Pneumatic Servo Control System according to claim 1, which is characterized in that the specified pressure of the first voltage stabilizing gas tank
Power is 0.6-1.2MPa, and the rated pressure of the second voltage stabilizing gas tank is 0.1-0.8MPa.
10. a kind of tension stabilizing device, which is characterized in that including buffer roll and described in any one of claim 1-9 pneumatic
Servo-control system, the buffer roll, which is located at, to be surveyed between roller and stokehold jockey pulley, and strip is through the stokehold jockey pulley, described slow
It rushes roller and a roller of surveying enters annealing furnace, the cylinder is connect with the buffer roll and the cylinder can drive the buffering
Roller is moved along the direction that strip advances.
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| CN201810368963.5A CN108359788A (en) | 2018-04-23 | 2018-04-23 | Pneumatic servo control system and tension stabilizing device |
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| CN201810368963.5A CN108359788A (en) | 2018-04-23 | 2018-04-23 | Pneumatic servo control system and tension stabilizing device |
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| CN201810368963.5A Pending CN108359788A (en) | 2018-04-23 | 2018-04-23 | Pneumatic servo control system and tension stabilizing device |
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| CN113106607A (en) * | 2021-03-29 | 2021-07-13 | 南京玻璃纤维研究设计院有限公司 | Multilayer sheet yarn tension pneumatic control system and method |
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