CN104747461B - Control system for shape steel intensive pressure water cooling high-pressure variable-frequency water pumps - Google Patents
Control system for shape steel intensive pressure water cooling high-pressure variable-frequency water pumps Download PDFInfo
- Publication number
- CN104747461B CN104747461B CN201510098617.6A CN201510098617A CN104747461B CN 104747461 B CN104747461 B CN 104747461B CN 201510098617 A CN201510098617 A CN 201510098617A CN 104747461 B CN104747461 B CN 104747461B
- Authority
- CN
- China
- Prior art keywords
- water pump
- pressure frequency
- pressure
- pump
- conversion water
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Control Of Positive-Displacement Pumps (AREA)
Abstract
The invention relates to a control system for shape steel intensive pressure water cooling high-pressure variable-frequency water pumps. The control system comprises a water spraying valve state monitoring unit, a high-pressure variable-frequency water pump running number limiting unit, an automatic pump-stop pulse signal generation unit, a first high-pressure variable-frequency water pump start and stop control unit, a second high-pressure variable-frequency water pump start and stop control unit and a third high-pressure variable-frequency water pump start and stop control unit. The automatic pump-stop pulse signal generation unit sends output signals of itself to the first high-pressure variable-frequency water pump start and stop control unit. The water spraying valve state monitoring unit sends output signals of itself to the second high-pressure variable-frequency water pump start and stop control unit. The high-pressure variable-frequency water pump running number limiting unit sends output signals of itself to the third high-pressure variable-frequency water pump start and stop control unit. After the control system for the H shape steel intensive pressure water cooling high-pressure variable-frequency water pumps is adopted, the influences of severe pressure fluctuation of water passing high-pressure pipelines on the high-pressure water pumps, valves, filters and high-pressure water pipes can be eliminated, and a good energy conservation effect can be achieved.
Description
Technical field
The invention belongs to technical field of electrical automation control, belong to the production technology of the main furnace charge of blast furnace ironmaking, tool
Body is related to a kind of control system of shaped steel Water cooling high-pressure frequency-conversion water pump and method.
Background technology
After Ma Gangsan steel rolls head factory big H type steel finish rolling, Water cooling system put into operation in 2010, this system mainly by
Three high-pressure hydraulic pumps (560kw/ platform), backwash filters, wear water bypass valve, section and section rolled piece Water cooling device and (include
Cooling water nozzle, water spraying control valve, hand sluice valve, cooling water nozzle mobility framework and cooling water catch tray etc.), rolled piece cooling water
Return flume, back pool, elevator pump, high rate filter and absorbing well, absorption well etc. are formed, this system structure diagram following Fig. 1 institute
Show.It is much larger than the backwater amount of rolled piece cooling water return flume in view of this system high pressure water pump confluent in the unit interval, in order to anti-
Only shaped steel cooling water is excessive and avoid high-pressure hydraulic pump to be chronically at building the pressure and overload, this shaped steel from cooling water catch tray
Water cooling system must be sprayed water only when Water cooling device crosses steel, and no steel when stop spraying water and opening and wear water bypass valve,
The cooling water that high-pressure hydraulic pump exports is made to be returned directly to system return pond.Based on this, the cooling water control mode of this system is: when wearing
When water-cooling apparatus crosses steel, wear water bypass valve and close, water spraying control valve is opened, shaped steel Water cooling；Wear when shaped steel afterbody departs from
After water-cooling apparatus, system is opened and is worn water bypass valve, and closes water spray control afterwards 2 seconds (wearing the response time of water bypass valve)
Valve processed, Water cooling device stops water spray；When shaped steel head is close to Water cooling device, system opens water spraying control valve, and
Close afterwards at 2 seconds (i.e. the response time of water spraying control valve) and wear water bypass valve, Water cooling device is in water spray state.This is worn
The above-mentioned cooling water control mode of water system makes it there is many defects: first, for existing shaped steel Water cooling system
System, in order to avoid shaped steel cooling water is excessive from cooling water catch tray, Water cooling device often crosses a root type steel, water spraying control valve
And wear water bypass valve and need to be switched fast twice, and thus make system high pressure water pump discharge pressure that acutely ripple occurs twice
Dynamic.Frequently occur big ups and downs just because of high-pressure hydraulic pump outlet pressure, make system water supply pipeline that water hammer to occur, and thus
Lead to system pipeline frequently occur snap booster, piping filter inner chamber damage, high-pressure hydraulic pump impeller crush and outlet valve valve
The fault that plate comes off；Second, regimen condition statistics is worn from Ma Gang great H type steel production line all size H type steel, for great majority
For needing to wear the various description H type steel of water, the discharge demand of water worn by shaped steel, and to be typically located at a water supplying pump water yield inclined
Little and two pumps water-supply quantity state bigger than normal.Due to the feed pump that this wears water system, to use 10kv supply network direct
The high-pressure hydraulic pump of power supply, the speed of service of high-pressure hydraulic pump is non-adjustable, and so, the water yield adjustment that water worn by shaped steel can only be cold by controlling
But the number that water nozzle is opened, to realize, in this case, is worn the actual injection flow rate of water when shaped steel and is less than or much smaller than water pump in volume
Under fixed load state during available discharge, high-pressure hydraulic pump is necessarily caused to occur building the pressure and transshipping now during water worn by shaped steel
As thus leading to high-pressure hydraulic pump cavitation erosion seriously, its impeller average life was less than four months, and the service life of the pump housing
Only left and right one year；Third, the average steel rhythm of crossing of usual Ma Gang great H type steel Water cooling device is 4 minutes, its Shaped Steel leads to
The average time crossing Water cooling device is only 28 seconds.It follows that in continuous flow procedure, wearing water system high-pressure hydraulic pump exhausted
Most of the time is (i.e. the cooling water of high-pressure hydraulic pump output directly wear long water bypass valve return to back pool) flogging a dead horse, thus
Lead to power consumption useless in a large number.
Content of the invention
Wear the frequent water hammer of water system high service pipeline for shaped steel and high-pressure hydraulic pump frequently builds the pressure and transships
Problem is so that the pipeline of system high pressure water supply part proposes a kind of H type steel with the part of appliance frequent breakage present invention and wears water-cooled
But the control method of high-pressure frequency-conversion water pump.The technical scheme is that a kind of control of shaped steel Water cooling high-pressure frequency-conversion water pump
System processed, this system includes water injection valve condition monitoring unit, high-pressure frequency-conversion water pump operation quantity limits unit, pump trip pulse
Signal generating unit, a high-pressure frequency-conversion water pump on off control unit, No. two high-pressure frequency-conversion water pump on off control units and No. three
High-pressure frequency-conversion water pump on off control unit, described pump trip pulse signal generating unit, water injection valve condition monitoring unit, high pressure
Variable frequency pump runs quantity restriction unit and respective output signal is respectively sent to a high-pressure frequency-conversion water pump on off control list
Unit, No. two high-pressure frequency-conversion water pump on off control units and No. three high-pressure frequency-conversion water pump on off control units.Described water injection valve is two
Group water spray valve group, when two groups of water spray any one group of closings of valve groups, water injection valve condition monitoring unit output state is ' 1 '.Described
Control system controls high-pressure frequency-conversion water pump high-pressure frequency-conversion water pump automatic before water worn by shaped steel, and high-pressure frequency-conversion water after water worn by shaped steel
Pump automatic stopping.Described pump trip pulse signal generating unit includes forward position delay function block, tailing edge delay function block and front
Tailing edge identification function block, the inspection signal of two hot metal detectors t117, t118 is respectively sent to forward position delay function block
Xjclsc08 and tailing edge delay function block xjclsc09, in front and back along identification function tuber according to forward position delay function block and tailing edge time delay
The input signal of functional device send respectively control pump trip pulse signal to high-pressure frequency-conversion water pump on off control unit, two
Number high-pressure frequency-conversion water pump on off control unit and No. three high-pressure frequency-conversion water pump on off control units.Described forward position delay function block
Xjclsc08 is used for preventing pump because hot metal detector t117 or hot metal detector t118 moment miss during automatic
Inspection obtains signal and produces pump trip pulse signal；Described tailing edge delay function block xjclsc09 is used for preventing pump from wearing in rolled piece
Because hot metal detector t117 and hot metal detector t118 moment flase drop lose signal and produce pump trip arteries and veins during water
Rush signal.Three high-pressure frequency-conversion water pumps of this system adopt dual-purpose one standby or one with two standby control modes.A described high pressure
Variable frequency pump on off control unit, No. two high-pressure frequency-conversion water pump on off control units and No. three high-pressure frequency-conversion water pump on off control lists
Unit is in high-pressure frequency-conversion starting mode of pump Separation control, high-pressure hydraulic pump automatic running time-out, water injection valve is not switched on, high-pressure hydraulic pump mode is selected
Select in block, high-pressure frequency-conversion water pump drive fault, the manual termination of pumping of high-pressure frequency-conversion water pump and high-pressure frequency-conversion water pump pump trip and appoint
When one input signal of meaning is ' 1 ', output termination of pumping instruction.Described high-pressure frequency-conversion water pump on off control unit, No. two high pressure
Variable frequency pump on off control unit and No. three high-pressure frequency-conversion water pump on off control units do not surpass in high-pressure frequency-conversion water pump input quantity
Limit, high-pressure frequency-conversion water pump put into selection, high-pressure frequency-conversion water pump transmission device is ready and high-pressure frequency-conversion water pump manually boots
When signal or automatically activated signal are all ' 1 ', export the instruction of this pump operation.Quantity and height that this system is opened by water injection valve
The speed adjustment spray flow of pressure variable frequency pump and irrigation pressure.This system started before shaped steel enters Water cooling device
To the speed setting, when shaped steel afterbody leaves Water cooling device, block high-pressure frequency-conversion water pump supplies selected high-pressure frequency-conversion water pump
Electric converter, makes high-pressure frequency-conversion water pump be in dead ship condition.
The present invention has following good effect: after the control method using this H type steel Water cooling high-pressure frequency-conversion water pump, no
The impact wearing the violent pressure oscillation of water high pressure line to high-pressure hydraulic pump, valve, filter and high-pressure water pipe only can be eliminated,
But also good energy-saving effect can be obtained.
Brief description
Fig. 1 is the improved shaped steel Water cooling system construction drawing of the specific embodiment of the invention；
Fig. 2 is the control system block diagram of the shaped steel Water cooling high-pressure frequency-conversion water pump of the specific embodiment of the invention；
Specific embodiment
Below against accompanying drawing, by the description to embodiment, for example involved each component of the specific embodiment of the present invention
Shape, construction, the mutual alignment between each several part and annexation, the effect of each several part and operation principle, manufacturing process and
Operate with method etc., is described in further detail, to help those skilled in the art to the inventive concept of the present invention, technology
Scheme has more complete, accurate and deep understanding.Need the various kinds rule of Water cooling after to Ma Gang great H type steel finish rolling
The statistics of lattice understands, after big H type steel finish rolling, generally between 4～6 minutes, its Shaped Steel leads to for the work rhythm of Water cooling device
The average time crossing Water cooling device is 28 seconds, and Water cooling device treats that steel unflowing time is 3.5～5.5 minutes about.By
This understands, in the normal operation of rolling, the Water cooling device overwhelming majority time is at treating steel stop-spraying state.Based on this, can
To be powered to 3 high-pressure hydraulic pumps of shaped steel Water cooling system respectively using 3 10kv high voltage converters, so, every time can be in type
Steel starts selected high-pressure frequency-conversion water pump to the speed setting before entering Water cooling device, and leaves in shaped steel afterbody and wear water
During chiller, block high-pressure frequency-conversion water pump is powered converter, makes high-pressure frequency-conversion water pump be in free parking state.Generally H type steel
Wear water high-pressure frequency-conversion water pump starting time can be controlled in 15 seconds within.In view of water high-pressure frequency-conversion water pump worn by H type steel only can achieve
Work when water worn by shaped steel, so, the water spraying control valve of shaped steel Water cooling device can be in process of production all the time to be opened
State.In this case, the quantity that the spray flow of shaped steel Water cooling device and irrigation pressure can be opened by nozzle
And the speed of high-pressure frequency-conversion water pump is being adjusted.It follows that shaped steel wear water high-pressure hydraulic pump adopt inverter supply after,
Not only avoid and wear the water hammer that water high service pipeline produces because of pressure big ups and downs and there is good energy-conservation effect
Really, and be also convenient for the finely regulating that shaped steel wears discharge and pressure, optimal shaped steel Water cooling effect is reached with this.Problem
It is the start and stop how timely and accurately controlling shaped steel Water cooling water pump according to the rolling rhythm of type steel production line.For this reason, we
It has been independently engineered a kind of control program (or control method) of shaped steel Water cooling high-pressure frequency-conversion water pump, its control program structure
Figure is illustrated in fig. 2 shown below.
In figure 2 above, ncm is " numeric ratio is relatively " functional device, and as x1 ＞ x2, qu is ' 1 ', and as x1x2, qe is ' 1 ',
As x1 ＜ x2, ql is ' 1 '；Rsr is " the preferential rs trigger of reset terminal r " functional device, and when s is that ' 1 ', r is ' 0 ', q is
' 1 ', qn are ' 0 ', and when s is that ' 1 ', r is ' 1 ', q is ' 0 ', qn is ' 1 ', and when s is that ' 0 ', r is ' 0 ', q and qn keeps ortho states,
When s is that ' 0 ', r is ' 1 ', q is ' 0 ' qn is ' 1 '；Ete is " edge sets in front and back " functional device, when input i becomes ' 1 ' by ' 0 '
When, qp end only exports the direct impulse that length is 1 cycle period, and under remaining state, qp end remains ' 0 ' state.Work as input
When i becomes ' 0 ' by ' 1 ', qn end only exports the direct impulse that length is 1 cycle period, and under remaining state, qn end remains ' 0 '
State；Mfp is " pulse generator " functional device, and when input i becomes ' 1 ' by ' 0 ', q end for t just will export 1 time span
To pulse, and during q end output direct impulse, the state change of input i no longer produces impact to q end output state；
Pde is " forward position time delay " functional device；Pdf is " tailing edge time delay " functional device；Or is disjunction gate；And is " with door "；Not is " non-
Door ".The design of this shaped steel Water cooling high-pressure frequency-conversion water pump control program and control thought are as follows:
(1) this control program is mainly made up of six control units, and that is, functional device xjclsc01～xjclsc04 is constituted
Water cooling system water injection valve condition monitoring unit；Functional device xjclsc05 and xjclsc06 constitute Water cooling system high pressure and become
Frequency water pump operation quantity limits unit；Functional device xjclsc07～xjclsc12 constitutes Water cooling system pump trip pulse letter
Number generating unit；Functional device xjclsc13～xjclsc27, xjclsc28～xjclsc42 and xjclsc43～xjclsc57
Respectively constitute number high-pressure frequency-conversion water pump on off control unit of Water cooling system, No. two high-pressure frequency-conversion water pump on off control units
And No. three high-pressure frequency-conversion water pump on off control units.
(2) in order to prevent the overload occurring under the state of building the pressure after high-pressure frequency-conversion starting mode of pump, high in this shaped steel Water cooling
It is provided with Water cooling system water injection valve condition monitoring unit in pressure variable frequency pump control program, and by the output of this unit (i.e.
The output of functional device xjclsc04) state (or signal) forbids one of condition as the operation of each high-pressure frequency-conversion water pump, so, when
When Water cooling device section or section water injection valve are closed, output state (the i.e. work(of this water injection valve condition monitoring unit
The output state of energy block xjclsc04) it is ' 1 ', thus make high-pressure frequency-conversion water pump No starting to be launched make the height of operation
Pressure variable frequency pump immediately enters the free parking state of transmission block.
(3) under automated manner, in order to reduce backwater amount and the energy saving of shaped steel water spray, this Water cooling system is high
Pressure variable frequency pump is worn automatic shaped steel before water using shaped steel and is worn self-stopping working method after water.Generally from universal roughing mill
The time that group last passes state of entrance nips needed for finishing mill to shaped steel is 48 seconds, and wears water system high-pressure frequency-conversion water
The starting time of pump is about 15 seconds, so, this shaped steel Water cooling high-pressure frequency-conversion water pump control program is by universal roughing mill group
The status signal entering last passes wears the automatically activated signal of high-pressure frequency-conversion water pump before water as shaped steel.And work as shaped steel
After afterbody passes through shaped steel Water cooling device, the pump trip signal of high-pressure frequency-conversion water pump then after Water cooling device two
Individual hot metal detector (referred to as heat inspection) (t117 and t118) is producing, but the pump trip signal in view of high-pressure frequency-conversion water pump
The water smoke being necessary for after pulse signal and Water cooling device is larger, so, in order to obtain high-pressure frequency-conversion water pump pump trip
Pulse signal and prevent the existing error signal of heat detection, be provided with this shaped steel Water cooling high-pressure frequency-conversion water pump control program
Pump trip pulse signal generating unit.In this unit, pump is prevented certainly by " forward position time delay " functional device xjclsc08
Because heat inspection t117 or t118 moment flase drop obtains signal and produces pump trip pulse signal in dynamic start-up course；By " tailing edge
Time delay " functional device xjclsc09 come to prevent pump during rolled piece wears water because heat inspection t117 and t118 moment flase drop lossing signal and
Produce pump trip pulse signal；And pump trip pulse signal is obtained by " in front and back along identification " functional device xjclsc12.
(4) this Water cooling system has three high-pressure frequency-conversion water pumps, adopts dual-purpose one standby or one standby with two, be in work
Prevent three high-pressure frequency-conversion water pumps from putting into simultaneously and starting, thus lead to high-pressure frequency-conversion water pump power switch to transship, in this type
Be provided with steel Water cooling high-pressure frequency-conversion water pump control program high-pressure frequency-conversion water pump operation quantity limit unit, this unit defeated
Go out (i.e. the output of functional device xjclsc06) state as one of the entry condition of each high-pressure frequency-conversion water pump, so, when three high
When pressure variable frequency pump puts into simultaneously, for ' 0 ', the output state of this unit ensure that Water cooling system at most can only put into two
High-pressure frequency-conversion water pump.
(5) for Water cooling system after H type steel finish rolling, the structure of its three high-pressure frequency-conversion water pump on off control units is equal
Identical, now explanation taking a high-pressure frequency-conversion water pump on off control unit as a example.In a number high-pressure frequency-conversion water pump on off control unit
The reset terminal r of rsr trigger function block xjclsc23 is connected with the output of disjunction gate functional device xjclsc22, and this disjunction gate work(
Can block input be the various termination of pumping signal of high-pressure frequency-conversion water pump (that is: high-pressure frequency-conversion starting mode of pump Separation control, No. one
High-pressure hydraulic pump automatic running time-out, water injection valve are not switched on, a high-pressure hydraulic pump mode selects block, a high-pressure frequency-conversion water pump to pass
Dynamic fault, a manual termination of pumping of high-pressure frequency-conversion water pump and a high-pressure frequency-conversion water pump pump trip), when this disjunction gate functional device
Input signal in when to have any one signal be " 1 ", the outfan q of above-mentioned rsr trigger function block xjclsc23 is " 0 ",
So, a high-pressure frequency-conversion water pump on off control unit will export termination of pumping instruction；A number high-pressure frequency-conversion water pump on off control unit
Set end s of middle rsr trigger function block xjclsc23 is connected with the output of " with door " functional device xjclsc21, and is somebody's turn to do " with door "
Functional device input for a high-pressure frequency-conversion starting mode of pump correlated condition (that is: high-pressure frequency-conversion water pump input quantity do not transfinite, one
Number high-pressure frequency-conversion water pump put into select, high-pressure frequency-conversion water pump transmission device is ready and high-pressure frequency-conversion water pump handss
Dynamic enabling signal or automatically activated signal), when the correlated condition of a high-pressure frequency-conversion starting mode of pump is satisfied by, a high voltage variable
Frequency water pump on off control unit will export this pump operation instruction (i.e. enabled instruction).
Above in conjunction with accompanying drawing, the present invention is exemplarily described it is clear that the present invention implements is not subject to aforesaid way
Restriction, as long as employing the improvement of various unsubstantialities that method of the present invention design and technical scheme are carried out, or without changing
Enter and the design of the present invention and technical scheme are directly applied to other occasions, all within protection scope of the present invention.
Claims (10)
1. a kind of control system of shaped steel Water cooling high-pressure frequency-conversion water pump it is characterised in that: this system includes water injection valve state
Monitoring unit, high-pressure frequency-conversion water pump operation quantity limit unit, pump trip pulse signal generating unit, a high-pressure frequency-conversion water
Pump on off control unit, No. two high-pressure frequency-conversion water pump on off control units and No. three high-pressure frequency-conversion water pump on off control units, institute
State pump trip pulse signal generating unit, water injection valve condition monitoring unit, high-pressure frequency-conversion water pump operation quantity limits unit will
Respective output signal is respectively sent to a high-pressure frequency-conversion water pump on off control unit, No. two high-pressure frequency-conversion water pump on off controls
Unit and No. three high-pressure frequency-conversion water pump on off control units.
2. according to claim 1 shaped steel Water cooling high-pressure frequency-conversion water pump control system it is characterised in that: described water spray
Valve is two groups of water spray valve groups, and when two groups of water spray any one group of closings of valve groups, water injection valve condition monitoring unit output state is
‘1’.
3. according to claim 1 shaped steel Water cooling high-pressure frequency-conversion water pump control system it is characterised in that: described control
System controls high-pressure frequency-conversion water pump high-pressure frequency-conversion water pump automatic before water worn by shaped steel, shaped steel wear after water high-pressure frequency-conversion water pump from
Dynamic parking.
4. according to claim 1 shaped steel Water cooling high-pressure frequency-conversion water pump control system it is characterised in that: described automatically
Termination of pumping pulse signal generating unit includes forward position delay function block, tailing edge delay function block and in front and back along identification function block, two
The inspection signal of hot metal detector t117, t118 is respectively sent to forward position delay function block xjclsc08 and tailing edge delay function
Block xjclsc09, sends out along identification function tuber respectively according to the input signal of forward position delay function block and tailing edge delay function block in front and back
Send control pump trip pulse signal to high-pressure frequency-conversion water pump on off control unit, No. two high-pressure frequency-conversion water pump on off controls
Unit and No. three high-pressure frequency-conversion water pump on off control units.
5. according to claim 4 shaped steel Water cooling high-pressure frequency-conversion water pump control system it is characterised in that: described forward position
Delay function block xjclsc08 is used for preventing pump because of hot metal detector t117 or hot metal detector during automatic
T118 moment flase drop obtains signal and produces pump trip pulse signal；Described tailing edge delay function block xjclsc09 is used for preventing
Pump is during rolled piece wears water because hot metal detector t117 and hot metal detector t118 moment flase drop lose signal and produce
Pump trip pulse signal.
6. according to claim 1 shaped steel Water cooling high-pressure frequency-conversion water pump control system it is characterised in that: this system
Three high-pressure frequency-conversion water pumps adopt dual-purpose one standby or one with two standby control modes.
7. according to claim 1 shaped steel Water cooling high-pressure frequency-conversion water pump control system it is characterised in that: described No. one
High-pressure frequency-conversion water pump on off control unit, No. two high-pressure frequency-conversion water pump on off control units and No. three high-pressure frequency-conversion water pump start and stop controls
Unit processed is in high-pressure frequency-conversion starting mode of pump Separation control, high-pressure hydraulic pump automatic running is overtime, water injection valve is not switched on, high-pressure hydraulic pump side
Formula selects block, high-pressure frequency-conversion water pump drive fault, the manual termination of pumping of high-pressure frequency-conversion water pump and high-pressure frequency-conversion water pump pump trip
In any one input signal be ' 1 ' when, output termination of pumping instruction.
8. according to claim 1 shaped steel Water cooling high-pressure frequency-conversion water pump control system it is characterised in that: described No. one
High-pressure frequency-conversion water pump on off control unit, No. two high-pressure frequency-conversion water pump on off control units and No. three high-pressure frequency-conversion water pump start and stop controls
Unit processed does not transfinite in high-pressure frequency-conversion water pump input quantity, high-pressure frequency-conversion water pump put into select, high-pressure frequency-conversion water pump transmission device
Ready and high-pressure frequency-conversion water pump manually boots signal or when automatically activated signal is all ' 1 ', exports the instruction of this pump operation.
9. according to claim 1 shaped steel Water cooling high-pressure frequency-conversion water pump control system it is characterised in that: this system lead to
Cross speed adjustment spray flow and the irrigation pressure of the quantity that water injection valve opens and high-pressure frequency-conversion water pump.
10. according to claim 1 shaped steel Water cooling high-pressure frequency-conversion water pump control system it is characterised in that: this system
Started selected high-pressure frequency-conversion water pump to the speed setting before shaped steel enters Water cooling device, leave in shaped steel afterbody and wear
During water-cooling apparatus, block high-pressure frequency-conversion water pump is powered converter, makes high-pressure frequency-conversion water pump be in dead ship condition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510098617.6A CN104747461B (en) | 2015-01-07 | 2015-03-05 | Control system for shape steel intensive pressure water cooling high-pressure variable-frequency water pumps |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2015100070140 | 2015-01-07 | ||
| CN201510007014 | 2015-01-07 | ||
| CN201510098617.6A CN104747461B (en) | 2015-01-07 | 2015-03-05 | Control system for shape steel intensive pressure water cooling high-pressure variable-frequency water pumps |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104747461A CN104747461A (en) | 2015-07-01 |
| CN104747461B true CN104747461B (en) | 2017-01-18 |
Family
ID=53587604
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510098617.6A Active CN104747461B (en) | 2015-01-07 | 2015-03-05 | Control system for shape steel intensive pressure water cooling high-pressure variable-frequency water pumps |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104747461B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107600895B (en) * | 2017-09-22 | 2019-07-02 | 马鞍山钢铁股份有限公司 | Carrier chain automatic start-stop control method based on fashioned iron carrier chain control system |
| CN112422021B (en) * | 2020-11-09 | 2022-12-23 | 马鞍山钢铁股份有限公司 | Control method for preventing overload of variable frequency motor lifted by cantilever crane |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201271649Y (en) * | 2008-10-06 | 2009-07-15 | 西王集团有限公司 | Improved apparatus of secondary screw-thread steel rolling mill |
| EP2644719A1 (en) * | 2012-03-28 | 2013-10-02 | Siemens Aktiengesellschaft | Cooling control |
| CN103480660A (en) * | 2013-09-04 | 2014-01-01 | 中冶南方工程技术有限公司 | Independent water supply method and device for pre-through-water cooling device before bar material finish rolling |
| CN103495609A (en) * | 2013-09-06 | 2014-01-08 | 中冶南方工程技术有限公司 | Small bar material through-water cooling stable device |
| CN203917423U (en) * | 2014-05-21 | 2014-11-05 | 中冶南方工程技术有限公司 | A kind of hot rolled rod is worn water-cooling apparatus independent plenums water system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5994999B2 (en) * | 2013-03-15 | 2016-09-21 | Ｊｆｅスチール株式会社 | Control method of cooling device for hot rolling line |
-
2015
- 2015-03-05 CN CN201510098617.6A patent/CN104747461B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201271649Y (en) * | 2008-10-06 | 2009-07-15 | 西王集团有限公司 | Improved apparatus of secondary screw-thread steel rolling mill |
| EP2644719A1 (en) * | 2012-03-28 | 2013-10-02 | Siemens Aktiengesellschaft | Cooling control |
| CN103480660A (en) * | 2013-09-04 | 2014-01-01 | 中冶南方工程技术有限公司 | Independent water supply method and device for pre-through-water cooling device before bar material finish rolling |
| CN103495609A (en) * | 2013-09-06 | 2014-01-08 | 中冶南方工程技术有限公司 | Small bar material through-water cooling stable device |
| CN203917423U (en) * | 2014-05-21 | 2014-11-05 | 中冶南方工程技术有限公司 | A kind of hot rolled rod is worn water-cooling apparatus independent plenums water system |
Non-Patent Citations (2)
| Title |
|---|
| "变频器在轧钢水处理水泵电机的应用";朱明;《科技资讯》;20110331(第8期);第36-37页 * |
| "小H型钢轧后控制冷却系统的开发与应用";鲁怀敏等;《金属热处理》;20110731;第36卷(第7期);第101-105页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104747461A (en) | 2015-07-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104747461B (en) | Control system for shape steel intensive pressure water cooling high-pressure variable-frequency water pumps | |
| CN103302117B (en) | A kind of frequency-changing control system of single pump de-scaling and control method thereof | |
| CN103807156A (en) | Circulating water energy-saving control operation system | |
| CN104668296B (en) | A kind of method for monitoring state of shaped steel Water cooling high-pressure frequency-conversion water pump | |
| CN105234195A (en) | Energy-saving steel rolling phosphorous spraying device | |
| CN206176513U (en) | Passive water heat exchange station that mixes | |
| CN203297065U (en) | Waste heat recycling system of air compressor | |
| CN205277842U (en) | Water pump power -assist system | |
| CN201439094U (en) | Hot rolling strip steel lubricating and conveying system | |
| CN203716977U (en) | Water supply device used for shield tunneling machine of inclined shaft of coal mine | |
| CN203530347U (en) | Granulation-pump-free high temperature slag water quenching system | |
| CN204806758U (en) | Circulative cooling water supply system outside hydroelectric power plant | |
| CN108518819A (en) | A kind of controlling system of central air conditioner based on data acquisition | |
| CN109365552A (en) | A kind of finish rolling dephosphorization system | |
| CN205348263U (en) | Welding machine recirculated cooling water supercharging device of robot of automobile welding mill | |
| CN210172759U (en) | Novel slag flushing device | |
| CN201190668Y (en) | Oil temperature control device for twin-screw air compressor | |
| CN211080394U (en) | Control device for high-pressure turbid circulating water system for production of broadband stainless steel | |
| CN210856026U (en) | Coal water slurry comprehensive utilization system | |
| CN104971947A (en) | Method for controlling liquid level of laminar flow water tank | |
| CN108057725B (en) | Control method of descaling system | |
| CN219355507U (en) | Flushing device | |
| CN211471063U (en) | Gravity type fine filter water treatment system | |
| CN204309237U (en) | Plastic pipe production line cooling water water supply and sewage device | |
| CN204382626U (en) | Plastic pipe production line cooling vacuum case apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |