CN108757592B - A kind of hydro-cushion control device carries out the control mode of rolling mill hydro-cushion - Google Patents
A kind of hydro-cushion control device carries out the control mode of rolling mill hydro-cushion Download PDFInfo
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- CN108757592B CN108757592B CN201810501482.7A CN201810501482A CN108757592B CN 108757592 B CN108757592 B CN 108757592B CN 201810501482 A CN201810501482 A CN 201810501482A CN 108757592 B CN108757592 B CN 108757592B
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- pressure
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- main pump
- pump
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Classifications
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- 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
- F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
- F15B1/02—Installations or systems with accumulators
- F15B1/024—Installations or systems with accumulators used as a supplementary power source, e.g. to store energy in idle periods to balance pump load
-
- 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
- F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
- F15B1/02—Installations or systems with accumulators
- F15B1/04—Accumulators
- F15B1/08—Accumulators using a gas cushion; Gas charging devices; Indicators or floats 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
- F15B20/00—Safety arrangements for fluid actuator systems; Applications of safety devices in fluid actuator systems; Emergency measures for fluid actuator systems
- F15B20/005—Leakage; Spillage; Hose burst
-
- 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
- F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
- F15B2211/205—Systems with pumps
-
- 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
- F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
- F15B2211/21—Systems with pressure sources other than pumps, e.g. with a pyrotechnical charge
- F15B2211/212—Systems with pressure sources other than pumps, e.g. with a pyrotechnical charge the pressure sources being accumulators
-
- 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
- F15B2211/80—Other types of control related to particular problems or conditions
- F15B2211/87—Detection of failures
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Control Of Positive-Displacement Pumps (AREA)
Abstract
Present invention mainly discloses the control modes and device of a kind of rolling mill hydro-cushion, relate generally to equipment in Rolling Mill technical field, including main pump, it is pumped in main pump side equipped with ftercompction, the main pump, ftercompction pumps one end and passes through main pump delivery valve respectively, Fill valve is connect with air pressure tank, the other end is connect with fuel tank, the fuel tank other end is looked for be respectively equipped with fuel tank Fill valve, oil return valve, the oil return valve is connect with air pressure tank, controller is equipped in the air pressure tank side, the controller and air pressure tank are connected by being mounted on pressure switch on air pressure tank, the pressurized tank opens connection main pump and ftercompction pump, alarm is equipped on the air pressure tank, effectively avoid motor and hydraulic pump frequent start-stop, Hydraulic Elements frequent operation is in larger pressure difference, and provide fault alarm function.
Description
Technical field
The invention mainly relates to equipment in Rolling Mill technical field, specifically a kind of hydro-cushion control device carries out rolling mill
The control mode of hydro-cushion.
Background technique
Rolling mill is the mechanical equipment for realizing metal rolled process.Refer to complete stocking production overall process Zhuan Bei ﹐ include
There is Zhu that She Bei ﹑ Fu is wanted to help She Bei ﹑ handling equipment and auxiliary device etc..But general described milling train, which often only refers to, mainly to be set
It is standby.
Rolling mill hydraulic balance system has been used to support support roller and working roll in rolling mill, used hydro-cushion control
Mode processed are as follows: when balance system pressure drops to lower limit, hydraulic pump startup, oiling is suppressed into accumulator, and energy storage pressure mentions
After height to the upper limit, hydraulic pump stops working, and pressure is reduced to pressure required for compensating cylinder, Xiang Ping by the pressure reducing valve of accumulator outlet
Cylinder weigh for hydraulic oil, hydraulic oil acting when steel rolling in compensating cylinder, the pressure of accumulator gradually decreases, when being reduced to low pressure limit
When, pump starts to suppress to accumulator again, is recycled with this.
The shortcomings that control mode: the difference of upper pressure limit and lower limit that general accumulator is allowed is smaller, and hydraulic pump is frequent
It starts and stops, the compression shock number that hydraulic pump, motor, accumulator are subject to is more, and the service life of equipment can accordingly shorten.
Summary of the invention
In view of the deficiencies in the prior art defect, the purpose of the present invention is to provide one kind to avoid motor and hydraulic pump
Frequent start-stop, Hydraulic Elements frequent operation provide the hydro-cushion control device of fault alarm function in larger pressure difference
Carry out the control mode of rolling mill hydro-cushion.
In order to solve the above-mentioned technical problem, the present invention adopts the following technical scheme: a kind of hydro-cushion control device carries out
The control mode of rolling mill hydro-cushion, it is characterised in that: including main pump, pumped in main pump side equipped with ftercompction, the main pump, benefit
Press pump one end passes through main pump delivery valve, Fill valve and air pressure tank respectively and connects, and the other end is connect with fuel tank, another in the fuel tank
End is respectively equipped with fuel tank Fill valve, oil return valve, and the oil return valve is connect with air pressure tank, is equipped with control in the air pressure tank side
Device, the controller and air pressure tank are connected by being mounted on pressure switch on air pressure tank, and the pressurized tank opens connection main pump and benefit
Press pump is equipped with alarm on the air pressure tank, elastic diaphragm is equipped with inside the air pressure tank, the elastic diaphragm is air pressure
Space is divided into atmospheric pressure cavity and oil pressure chamber in tank, and the main pump delivery valve, Fill valve, oil return valve are connect with controller respectively, system
After booting, start main pump, under normal circumstances, after main pump runs the T1 time, air pressure pressure inside the tank still reaches to illustrate system less than P1
There are oil leakage fault, fault alarms；If air pressure pressure inside the tank reaches P1, main pump stops, and can be steady for rolling mill output
Fixed hydro-cushion pressure enters the production consumption pressure stage, when air pressure pressure inside the tank drops to Pa0, trigger repairing pump startup, this
When main pump without starting, if slippage pump stops if air pressure pressure inside the tank does not still reach Pa1 after the repairing pump operation T2 time,
Main pump starting is triggered simultaneously, is boosted；If air pressure pressure inside the tank has reached Pa1, then repairing in the repairing pump operation T2 time
Pump stops, and goes successively to the production consumption pressure stage, reciprocal with this.
As a further improvement of the present invention, it is set under the pressure that P0 and P1 is respectively balance system in the controller
The pressure value that limit and upper pressure limit, i.e. main pump start and stop.
As a further improvement of the present invention, in the controller setting Pa0 and Pa1 be respectively ftercompction pump starting and
The pressure value of stopping,
As a further improvement of the present invention, in the controller, the relationship of four pressure values are as follows: P0 < Pa0 < Pa1
< P1.
As a further improvement of the present invention, in the controller, it sets main pump and ftercompction pumps the operation started every time
Duration is respectively T1 and T2, and T1 and T2 are much larger than main pump starting pressure from P0 gets to the time of P1, ftercompction pump opens
The dynamic time for pressure being got to from Pa0 Pa1.
Compared with prior art, the device have the advantages that are as follows:
(1) gives ftercompction pump pressure normal in production process supply to complete, and flow is small, and starting continues every time
The time of operation can be elongated, and upper pressure limit can just be reached rapidly to avoid rigid starting, thus by this frequent start-stop of nearly termination of pumping
Working method.
(2) main pump expensive, flow is big only has generation small probability event, and (production pressure consumes big or oil leak event
Barrier) when just start, and this small probability event requirement each starting continuous working period it is longer, equally can be avoided main pump
Just starting just reaches rapidly upper pressure limit and termination of pumping.
(3) controller can export failure alarm signal, and convenient for relevant station, operator has found failure in time.
(4) volume of air pressure tank is much larger than accumulator, can be effectively reduced main pump and ftercompction pump stop frequency.
Detailed description of the invention
The present invention is further illustrated with reference to the accompanying drawings and detailed description:
Fig. 1 is the hydro-cushion for the control mode that a kind of hydro-cushion control device of the present invention carries out rolling mill hydro-cushion
Control flow block diagram；
Fig. 2 is the air pressure tank pressure for the control mode that a kind of hydro-cushion control device of the present invention carries out rolling mill hydro-cushion
Power changes structure chart；
Fig. 3 is that a kind of hydro-cushion control device of the present invention carries out controller in the control mode of rolling mill hydro-cushion
Four pressure size relation schematic diagrams；
Fig. 4 is the structure chart for the control mode that a kind of hydro-cushion control device of the present invention carries out rolling mill hydro-cushion.
In figure: 1 fuel tank, 2 ftercompctions pump, 3 Fill valves, 4 main pumps, 5 main pump delivery valves, 6 air pressure tanks, 61 atmospheric pressure cavities, 62 oil pressure
Chamber, 63 air, 64 hydraulic oil, 65 elastic diaphragms, 7 pressure switches, 8 controllers, 9 fuel tank Fill valves, 10 oil-way pipes, 11 oil returns
Valve, 12 rolling mill hydro-cushions, 13 alarms.
It is worth noting that, in the description of the present invention, term " center ", "upper", "lower", "left", "right", "vertical",
The orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" be based on the orientation or positional relationship shown in the drawings, merely to
Convenient for description the present invention and simplify description, rather than the device or element of indication or suggestion meaning must have a particular orientation,
It is constructed and operated in a specific orientation, therefore is not considered as limiting the invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Fig. 1 is the hydro-cushion for the control mode that a kind of hydro-cushion control device of the present invention carries out rolling mill hydro-cushion
Control flow block diagram after system boot, starts main pump.Under normal circumstances, main pump runs T1After time, air pressure pressure inside the tank is still
P is not achieved1, illustrating system, there are oil leakage fault, fault alarms；If air pressure pressure inside the tank reaches P1, then main pump stops, and can
Think that rolling mill exports stable hydro-cushion pressure, that is, enters the production consumption pressure stage, when air pressure pressure inside the tank drops to Pa0When, touching
Repairing pump startup is sent out, main pump is without starting at this time, if repairing pump operation T2After time, air pressure pressure inside the tank does not still reach
Pa1Then slippage pump stops, while triggering main pump starting, boosts；If repairing pump operation T2In time, air pressure pressure inside the tank reaches
P is arriveda1, then slippage pump stops, and goes successively to the production consumption pressure stage, reciprocal with this.
Fig. 2 is the air pressure tank pressure for the control mode that a kind of hydro-cushion control device of the present invention carries out rolling mill hydro-cushion
Power changes structure chart, described that elastic diaphragm is equipped with inside the air pressure tank, and the elastic diaphragm is divided into space in air pressure tank
Atmospheric pressure cavity and oil pressure chamber.
Fig. 3 is that a kind of hydro-cushion control device of the present invention carries out controller in the control mode of rolling mill hydro-cushion
Four pressure size relation schematic diagrams, set P in the controller0And P1The respectively low pressure limit and upper pressure limit of balance system,
That is the pressure value that starts and stops of main pump sets Pa0And Pa1The respectively pressure value of ftercompction pump started and stopped, four pressure
The relationship of value are as follows: P0< Pa0< Pa1< P1, setting the duration of operation that main pump and ftercompction pump start every time is respectively T1And T2,
T1And T2Much larger than main pump starting is pressure from P0Get to P1Time, ftercompction pump startup pressure from Pa0Get to Pa1When
Between.
Fig. 4 is the structure chart for the control mode that a kind of hydro-cushion control device of the present invention carries out rolling mill hydro-cushion,
Including main pump, pumped in main pump side equipped with ftercompction, the main pump, ftercompction pump one end pass through respectively main pump delivery valve, Fill valve with
Air pressure tank connection, the other end connect with fuel tank, and the fuel tank other end is looked for be respectively equipped with fuel tank Fill valve, oil return valve, and described time
Oil valve is connect with air pressure tank, is equipped with controller in the air pressure tank side, the controller and air pressure tank are by being mounted on air pressure
Pressure switch connects on tank, and the pressurized tank opens connection main pump and ftercompction pump, and alarm, the master are equipped on the air pressure tank
Oil pump outlet valve, Fill valve, oil return valve are connect with controller respectively.
Main pump and ftercompction pump start and stop logic: when rolling mill works, when main pump, certain runing time is more than T1, illustrate balance system
Oil leak inside oil leakage fault, such as pipeline oil leak, main pump occurs for system, and controller issues halt instruction to main pump, while exporting report
Alert signal.It is more than T when ftercompction pumps certain runing time2, illustrate that balance system consumption pressure is larger (such as rolling special steel), or balance
Oil leakage fault occurs for system, and controller is pumped to ftercompction issues halt instruction, while issuing enabled instruction to main pump, works as balance system
Fault-free, and be when consuming to press larger, pressure quickly can be got to P by main pump1, continue control mode above, when balance is
When oil leakage fault occurs for system, alarm signal is exported.
Control mode of the invention: after system boot, start main pump.Under normal circumstances, main pump runs T1After time, air pressure
Pressure inside the tank is still reached to less than P1, illustrating system, there are oil leakage faults, and maintenance personnel is needed to handle in time；If air pressure tank internal pressure
Power reaches P1, then main pump stops, and can export stable hydro-cushion pressure for rolling mill, that is, enter the production consumption pressure stage,
When air pressure pressure inside the tank drops to Pa0When, repairing pump startup is triggered, main pump is without starting at this time, if repairing pump operation T2Time
Afterwards, air pressure pressure inside the tank does not still reach Pa1Then slippage pump stops, while triggering main pump starting, boosts；If slippage pump
Run T2In time, air pressure pressure inside the tank has reached Pa1, then slippage pump stops, and goes successively to the production consumption pressure stage, and it is reciprocal with this,
Realize that main pump is used in system initial start stage, the subsequent control mode by repairing pump work.
Claims (5)
1. the control mode that a kind of hydro-cushion control device carries out rolling mill hydro-cushion, it is characterised in that: including main pump, In
Main pump side is pumped equipped with ftercompction, and the main pump, ftercompction pump one end and pass through main pump delivery valve, Fill valve and air pressure tank connection respectively,
The other end is connect with fuel tank, is respectively equipped with fuel tank Fill valve, oil return valve, the oil return valve and air pressure tank in the fuel tank other end
Connection is equipped with controller in the air pressure tank side, and the controller and air pressure tank are by being mounted on pressure switch on air pressure tank
Connection, the pressurized tank open connection main pump and ftercompction pump, alarm are equipped on the air pressure tank, is set inside the air pressure tank
Space in air pressure tank is divided into atmospheric pressure cavity and oil pressure chamber, the main pump delivery valve, repairing by flexible diaphragm, the elastic diaphragm
Valve, oil return valve are connect with controller respectively, after system boot, start main pump, under normal circumstances, after main pump runs the T1 time, gas
Pressure pressure inside the tank is still reached to less than P1, and illustrating system, there are oil leakage fault, fault alarms；If air pressure pressure inside the tank reaches P1,
Then main pump stops, and can export stable hydro-cushion pressure for rolling mill, that is, enters the production consumption pressure stage, when in air pressure tank
When pressure drops to Pa0, repairing pump startup is triggered, main pump is not necessarily to starting at this time, if after the repairing pump operation T2 time, in air pressure tank
Pressure does not still reach Pa1, and then slippage pump stops, while triggering main pump starting, boosts；If the repairing pump operation T2 time
Interior, air pressure pressure inside the tank has reached Pa1, then slippage pump stops, and goes successively to the production consumption pressure stage, reciprocal with this.
2. a kind of hydro-cushion control device according to claim 1 carries out the control mode of rolling mill hydro-cushion,
It is characterized in that, set the low pressure limit and upper pressure limit that P0 and P1 is respectively balance system in the controller, i.e. main pump opens
Pressure value that is dynamic and stopping.
3. a kind of hydro-cushion control device according to claim 1 carries out the control mode of rolling mill hydro-cushion,
It is characterized in that: setting the pressure value started and stopped that Pa0 and Pa1 is respectively ftercompction pump in the controller.
4. a kind of hydro-cushion control device according to claim 2 carries out the control mode of rolling mill hydro-cushion,
It is characterized in that: in the controller, the relationship of four pressure values are as follows: P0 < Pa0 < Pa1 < P1.
5. a kind of hydro-cushion control device according to claim 2 carries out the control mode of rolling mill hydro-cushion,
Be characterized in that: in the controller, setting the duration of operation that main pump and ftercompction pump start every time is respectively T1 and T2, T1
With T2 be much larger than main pump starting pressure from P0 get to time of P1, ftercompction pump startup pressure from Pa0 get to Pa1 when
Between.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810501482.7A CN108757592B (en) | 2018-05-23 | 2018-05-23 | A kind of hydro-cushion control device carries out the control mode of rolling mill hydro-cushion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810501482.7A CN108757592B (en) | 2018-05-23 | 2018-05-23 | A kind of hydro-cushion control device carries out the control mode of rolling mill hydro-cushion |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108757592A CN108757592A (en) | 2018-11-06 |
| CN108757592B true CN108757592B (en) | 2019-12-03 |
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ID=64006396
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|---|---|---|---|
| CN201810501482.7A Active CN108757592B (en) | 2018-05-23 | 2018-05-23 | A kind of hydro-cushion control device carries out the control mode of rolling mill hydro-cushion |
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Citations (8)
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|---|---|---|---|---|
| JPS57105576A (en) * | 1980-12-22 | 1982-07-01 | Kawasaki Yukou Kk | Driving device of oil hydraulic pump with fly wheel |
| JP3650161B2 (en) * | 1995-03-24 | 2005-05-18 | 豊興工業株式会社 | Pressure control valve |
| CN201046459Y (en) * | 2007-06-15 | 2008-04-16 | 中国第一重型机械集团公司 | Balancing hydraulic cylinder for supporting worker rollers of rolling mill |
| CN101869912A (en) * | 2010-05-26 | 2010-10-27 | 太原重工股份有限公司 | Pressure-maintaining and regulating hydraulic control system of roll balance gear |
| CN101979159A (en) * | 2010-09-30 | 2011-02-23 | 武汉奋进电力技术有限公司 | Emergency energy storage device |
| CN201794075U (en) * | 2010-08-03 | 2011-04-13 | 萧景仁 | Pile press pressure stabilizer of hydraulic pressure retaining system |
| CN105332963A (en) * | 2014-09-17 | 2016-02-17 | 徐州重型机械有限公司 | Hydraulic speed regulation valve, hydraulic winch system and crane hydraulic system |
| CN205133187U (en) * | 2015-10-20 | 2016-04-06 | 北京凌锐能源技术有限公司 | Circulating water system soft water moisturizing ordinary pressure exhaust pressurization installation |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3422727A (en) * | 1967-08-04 | 1969-01-21 | Pacific Press & Shear Corp | Two speed ram type machine |
| CN1594633A (en) * | 2004-06-24 | 2005-03-16 | 宝钢集团上海五钢有限公司 | Dampproof hydrogen sulfide stress corrosion steel and preparing method thereof |
-
2018
- 2018-05-23 CN CN201810501482.7A patent/CN108757592B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57105576A (en) * | 1980-12-22 | 1982-07-01 | Kawasaki Yukou Kk | Driving device of oil hydraulic pump with fly wheel |
| JP3650161B2 (en) * | 1995-03-24 | 2005-05-18 | 豊興工業株式会社 | Pressure control valve |
| CN201046459Y (en) * | 2007-06-15 | 2008-04-16 | 中国第一重型机械集团公司 | Balancing hydraulic cylinder for supporting worker rollers of rolling mill |
| CN101869912A (en) * | 2010-05-26 | 2010-10-27 | 太原重工股份有限公司 | Pressure-maintaining and regulating hydraulic control system of roll balance gear |
| CN201794075U (en) * | 2010-08-03 | 2011-04-13 | 萧景仁 | Pile press pressure stabilizer of hydraulic pressure retaining system |
| CN101979159A (en) * | 2010-09-30 | 2011-02-23 | 武汉奋进电力技术有限公司 | Emergency energy storage device |
| CN105332963A (en) * | 2014-09-17 | 2016-02-17 | 徐州重型机械有限公司 | Hydraulic speed regulation valve, hydraulic winch system and crane hydraulic system |
| CN205133187U (en) * | 2015-10-20 | 2016-04-06 | 北京凌锐能源技术有限公司 | Circulating water system soft water moisturizing ordinary pressure exhaust pressurization installation |
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| Publication number | Publication date |
|---|---|
| CN108757592A (en) | 2018-11-06 |
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