CN104846152B - Double-tank single-cover VD (vacuum degasser) refining furnace structure - Google Patents
Double-tank single-cover VD (vacuum degasser) refining furnace structure Download PDFInfo
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- CN104846152B CN104846152B CN201510291582.8A CN201510291582A CN104846152B CN 104846152 B CN104846152 B CN 104846152B CN 201510291582 A CN201510291582 A CN 201510291582A CN 104846152 B CN104846152 B CN 104846152B
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Abstract
The invention discloses a double-tank single-cover VD (vacuum degasser) refining furnace structure which comprises two vacuum tanks arranged in parallel at an interval, an operating platform which is horizontally arranged at the tank port of the vacuum tank, and a vacuum-pumping system; the operating platform is provided with a vacuum tank cover vehicle; and the lower part of the vacuum tank cover vehicle is connected with a vacuum tank cover. The structure is characterized in that the lower part of the operating platform is erected above a molten steel return line through a mounting rack; and a space, through which a ladle can pass, is left between the operating platform and molten steel return line. The double-tank single-cover VD refining furnace structure has the advantages of scientific layout, compact structure, small occupied space, reasonable structure of the tank cover vehicle, high controllability of the tank cover, reasonable structure of the vacuum-pumping system, high controllability and stability, high work efficiency, long service life and the like.
Description
Technical field
The present invention relates to a kind of steel-making vd refining techniques, more particularly, to a kind of pair of tank list lid formula vd refine furnace structure.
Background technology
Steel-making vd refining techniques, is a kind of technique adopting vd stove in the way of evacuation, carrying out refine to molten steel.Vd stove
Also known as vd type ladle refining furnace, it is capable of Argon, oxygen blast, decarburization, vacuum outgass, alloying component fine setting under vacuum under vacuo
Deng operation；Molten steel can be carried out with alloying component fine setting under general Fruit storage and vacuum.Its work process, generally comprises
Open vacuum container cover and hang in ladle, connect argon-blowing device Argon, thermometric samples, and covers vacuum container cover and evacuation is processed
(oxygen blast when being necessary), opens vacuum container cover after being disposed, thermometric samples and determines hydrogen and determines oxygen again, is carried out according to testing result
Feed silk (adding the adjusting components such as aluminium wire, silico-calcium silk) adjustment, stop Argon, complete refine and hang out ladle.
China's patent No. 201220444104.8 once disclosed a kind of simple and practical vd refining furnace, but belonged to single-station knot
Structure, work efficiency is relatively low.
China's patent No. zl201120423331.8 once disclosed a kind of double tank body vd vacuum drying oven of single cover, including power supply electricity
Source, operating platform, tank body, cover, cover car, vacuum pump system, hydraulic system, cooling system, cleaner unit, argon blowing system, institute
The tank body said is two, shares a cover, and two tank bodies are separately positioned on cover both sides, and operating platform is provided with track, road
Rail is provided with cover car, and cover is arranged on cover car, can move back and forth along track.In foregoing invention, devise two tank bodies
Share cover and form double, when a tank body carries out application of vacuum, another tank body can carry out thermometric, feed silk,
Determine oxygen, determine the operation such as hydrogen, save preparation time, two station alternately operatings compared with single-station vd stove, it is possible to increase
Efficiency.
But this existing Double-station type vd stove technology, however it remains following defect: 1, not section of vd stove integral structure layout
Learn, be unfavorable for manipulating and occupation of land space is larger.2nd, cover bassinet structure is simpler, be unfavorable for the closing lid to cover and open wait grasp
Make.3rd, pumped vacuum systems is the wet type pumped vacuum systems using steam jet pump, but structure is excessively complicated, is unfavorable for manipulating, dirty
Water treatment system floor space is big.4th, higher to steam needs, system energy consumption is high.5th, whole process control procedure need into
One-step optimization, with improve production efficiency, improves control stability, extension device life-span.
Content of the invention
For above-mentioned the deficiencies in the prior art, the technical problem to be solved is: how to provide a kind of layout section
Learn, compact conformation, occupation of land space is little, cover bassinet structure rationally, facilitates cover operational control, pumped vacuum systems is rational in infrastructure, carries
Height manipulates stability and beneficial to the double tank list lid formula vd refine furnace structures increasing the service life.
In order to solve above-mentioned technical problem, present invention employs following technical scheme:
A kind of pair of tank list lid formula vd refine furnace structure, including setting in two vacuum tanks of spacing parallel arranging setting, vacuum tank
There are argon-blowing device and tank internal gas pressure detection probe, also include being horizontally placed on the operating platform of vacuum tank tank mouth height and position,
Vacuum container cover car is additionally provided with operating platform, the roller cooperation below vacuum container cover car is mounted on outside two vacuum tanks
On the vacuum container cover car guide rail be arrangeding in parallel, it is connected with vacuum container cover below vacuum container cover car, vacuum container cover includes being located at
Top and for and vacuum tank install cooperation enclosing cover and be hung at below enclosing cover be used for and ladle cooperation Splashproof cover, vacuum tank
Tank mouth is provided with a circle seal groove, is provided with rubber seal, also includes pumped vacuum systems in seal groove, described pumped vacuum systems
Including two evacuation branch pipe(tube)s, one end of two evacuation branch pipe(tube)s connects with the sealing of corresponding vacuum tank respectively, the other end
Evacuation main pipeline is connected to by threeway and is connected to vacuum pump system, two evacuation branch pipe(tube)s are respectively provided with one very
Empty main valve；It is characterized in that, below described operating platform, molten steel is set up in by installing rack and melts down above line guide rail, and operate flat
Platform and molten steel melt down and leave the space passed through for ladle between line guide rail.
In the present invention, vd stove is crossed on molten steel and melts down above line, its own does not interfere with molten steel and melts down normally making of line
With can melt down, by molten steel, the conveying that line carries out ladle, thus dramatically saves on floor space so that steel-making is given birth to simultaneously
Producing line integral layout more compact and reasonable, saves device layout cost.
As optimization, it is in flat car body that vacuum container cover car includes overall appearance, and car body four end has downward support
Arm is simultaneously connected on vacuum container cover car guide rail in support arm lower end installation roller, and car body lower surface side interval is provided with two
Individual hydraulic cylinder, hydraulic cylinder extension arm arranges inwards and is connected with two chains in telescopic arm front end, and two chain front ends are each forward
From bypass two fixed pulleys that time interval is arranged on car body backward under be connected on vacuum container cover, described two hydraulic cylinders
Hydraulic Station is arranged on car body upper surface.
So, when needing to close vacuum container cover, vacuum container cover car only need to be controlled to run to the corresponding vacuum producing station
Above tank, its telescopic arm is controlled to stretch out by hydraulic cylinder, vacuum container cover leans on gravity gradually descending and drops into vacuum tank tank mouth and sets
In the seal groove put, complete sealing by rubber seal and close；When needing to open vacuum container cover, only need Reverse Turning Control hydraulic cylinder
Telescopic arm is retracted, you can realize the lifting to vacuum container cover by chain, completes to open.
Further, four chains junction point on vacuum container cover is uniformly distributed along annular around vacuum container cover axial line,
It is beneficial to holding balance, improve manipulation stability.
As optimization, described hydraulic cylinder rear end is hinged on car body by horizontally disposed hinge, before hydraulic cylinder extension arm
End connects two chains by an adaptor, and adaptor lower end coordinates on a horizontal sliding table horizontally slidablely.So,
It is more favorable for improving the stability that hydraulic cylinder controls vacuum container cover.
Further, adaptor one end bottom directly connects with a chain, and this end top is horizontally disposed by one
Connecting rod and another chain connect, and so can preferably improve structural stability, improve control stability.
As optimization, described car body is also fixedly installed fairlead straight down, in fairlead, is equipped with guiding
Post, lead lower end is fixed on vacuum container cover straight down.So, fairlead and lead constitute guiding mechanism, control true
Slack tank lid move up and down direction accuracy it is ensured that closing process accurately and reliably.
As optimization, described operating platform is integrally t-shaped, and its wider side two ends arranges two vacuum tanks, narrower
It is provided with operating room above side.
So, operating room is set, can conveniently realize the electrical control to refining process.So that operating platform is had simultaneously
Simple and compact for structure, the feature of save space.
As optimization, described operating platform is additionally provided with vacuum tank sealing ring protection mechanism, is horizontally set on including one
Slag trap below vacuum container cover car on operating platform and above vacuum tank tank mouth height, the mobile road of Splashproof cover in vacuum tank
Footpath projection vertically drops in the width range of slag trap, and slag trap is provided with away from the side corresponding to vacuum tank to be stretched
Compression apparatus, the expansion link telescopic direction of retractor device is consistent with Splashproof cover mobile route direction, and expansion link front end is connected to pushing off the slag
On plate and pushing off the slag front edge of board can be driven to stretch out be covered in above corresponding vacuum tank tank mouth sides adjacent.
Because this vd furnace structure is using dry-type vacuum pumping system, in order to reduce vapor, vacuum pump is hindered and damaged,
It is not provided with cooling water in vacuum tank Jar opening sealer groove, therefore need using above-mentioned protection mechanism, the rubber seal in seal groove to be entered
Row protection.After arranging above-mentioned protection mechanism, in actual production, when vacuum tank application of vacuum terminates, in vacuum tank, vacuum breaker is extremely
Recover normal pressure, lifting vacuum container cover to upper limit, then starts retractor device, driving slag trap to forward extend out, to cover in rubber close
Above seal, burn out rubber seal to stop the high-temperature steel slag on Splashproof cover from dropping in seal groove.Vacuum container cover car is mobile extremely
After standby station, pushing off the slag sheet reset.Or vacuum container cover car will travel to producing before station, also first slag trap to be started shelters from rubber
Glue sealing ring, until after vacuum container cover garage sails to production station, pushing off the slag sheet reset, vacuum container cover falls and proceeds by vacuum
Reason.Thus need not be it can be avoided that cooling water produces steam to damage dry vacuum system, same using cooling water conservation sealing ring
When good to sealing ring protection effect, ensure that sealing ring tightness and service life.
As optimization, described slag trap is the corresponding consistent arcuate structure of radian with the vacuum tank tank mouth of adjacent side.This
Sample, only need to move a little distance can block sealing ring just, the movement of Splashproof cover will not be caused to hinder simultaneously.
As optimization, described slag trap lower end both sides are provided with roller, and roller rolls cooperation and supports edge on the operational platform
On the guide rail of mobile route direction setting of Splashproof cover.As such, it is possible to the convenient supporting to slag trap and control are moved.
As optimization, described slag trap is obtained for decorative pattern Steel material.So, slag trap surface roughness is high, facilitates workman
Standing operation, is difficult to fall down.
As optimization, described retractor device has two sets and is respectively disposed at slag trap away from the side of corresponding vacuum tank
End positions.So, retractor device force is made more to balance, work process is more reliable.
As optimization, described retractor device adopts cylinder.So there is structure simple, with low cost, equivalent beneficial to controlling
Really.
Further, it is provided with cylinder protective cover above cylinder, preferably to protect cylinder.
As optimization, in pumped vacuum systems, evacuation main pipeline is also connected be provided with cooler and defecator.
So, cooler can cool down to the gas extracted out, and defecator can filter out the ash in gas bleeding
Dirt, it is to avoid gas bleeding temperature is too high or inclusion of dirt causes to vacuum pump to damage it is ensured that vacuum pump job stability, prolongs
Long service life of vacuum pump.
Further, on evacuation branch pipe(tube), also it has been arranged in parallel internal diameter positioned at vacuum main valve side and has been less than evacuation and propped up
The by-pass line of internal diameter of the pipeline, described by-pass line is also equipped with bypass pipe switching control pilot.
So, in pumped vacuum systems, it is provided with by-pass line, when closing vacuum main valve carries out pre- taking out, it is right to simultaneously close off
The bypass pipe switching control pilot answered, exhausts in advance and (stops when being typically evacuated in advance about vacuum main road internal gas pressure 67 handkerchief) after finishing, first
Open bypass pipe switching control pilot so that the evacuation branch pipe(tube) of vacuum main valve rear and front end can first pass through the bypass of minor diameter
The preliminary connection of pipeline carry out pressure release so that before and after vacuum main valve pipeline upward pressure close to balance when, then open vacuum main valve, close
Bypass pipe switching control pilot, carries out evacuation.So because by-pass line internal diameter is less, rear and front end will not be caused during pressure release
Excessive impact and fluctuation.Pressure release opens vacuum main valve (a when will not be excessive to the pressure differential of vacuum main valve rear and front end position again
As pressure release to vacuum tank intrinsic pressure strong be 30 kPas, venting duration is the 90-120 second, ensure that pressure leak process and subsequently opens
The stablizing of vacuum main valve process), two ends will not form moment excessive pressure differential, does not result in big pressure oscillation.And then keep away
Exempt from the influence of fluctuations of vacuum main valve two ends air pressure impact, prevent slag steel expulsion events it is ensured that defecator and vacuum
The using effect of pumping system and service life.
Further, it is additionally provided with pipeline air pressure detection probe, described pipeline air pressure detection probe in evacuation main pipeline
And tank internal gas pressure detection probe all with controller in vacuum tank is connected, described vacuum main valve and bypass pipe switching control pilot
It is solenoid electric valve, described controller is electrically connected with the electric control part module of vacuum main valve and bypass pipe switching control pilot respectively
Connect.Controller is arranged at operating room to facilitate operational control.
So, above-mentioned control process can be realized electrification and automatically controls.Ensure to control accurately timely, raising evacuation effect
Really.
Further, described by-pass line is additionally provided with a bypass pipe circulation control valve.As such, it is possible to by bypass
Pipe flow flux control valve controls to adjust the ventilation flow rate of by-pass line it is ensured that not result in the pressure differential of moment during pressure release excessive,
Pressure release is avoided to cause to fluctuate.
In sum, the present invention has scientific arrangement, compact conformation, and occupation of land space is little, and cover bassinet structure rationally, facilitates tank
Lid operational control, pumped vacuum systems is rational in infrastructure, manipulates the advantages of good stability, high working efficiency and long service life.
Brief description
Fig. 1 is the structural representation (in figure of the overlook direction of double tank list lid formula vd refine furnace structures of specific embodiment
Do not show vacuum tank sealing ring protection mechanism and vacuum pump system structure).
Fig. 2 is Fig. 1 sectional view.
Fig. 3 is the structure of the vacuum tank sealing ring protection mechanism of double tank list lid formula vd refine furnace structures of specific embodiment
Schematic diagram.
Fig. 4 is the top view of Fig. 3.
Specific embodiment
With reference to specific embodiment, the present invention is described in further detail.
Specifically optimum embodiment: as Figure 1-4, a kind of pair of tank list lid formula vd refine furnace structure, including spacing parallel arranging
Two vacuum tanks 1 of setting, are provided with argon-blowing device and tank internal gas pressure detection probe, also include being horizontally disposed with vacuum tank 1
In the operating platform 2 of vacuum tank tank mouth height and position, operating platform 2 is additionally provided with vacuum container cover car, below vacuum container cover car
Roller cooperation be mounted on the vacuum container cover car guide rail 3 of two vacuum tank external side parallel setting, below vacuum container cover car
It is connected with vacuum container cover 4, vacuum container cover 4 includes above and is used for installing the enclosing cover of cooperation with vacuum tank and is hung at
It is used for the Splashproof cover 5 with ladle cooperation, vacuum tank 1 tank mouth is provided with a circle seal groove, is provided with rubber in seal groove below enclosing cover
Glue sealing ring, also includes pumped vacuum systems, and described pumped vacuum systems includes two evacuation branch pipe(tube)s 6, two evacuation arms
The one end in road 6 connects with the sealing of corresponding vacuum tank respectively, and the other end is connected to evacuation main pipeline 7 by threeway and is connected to
Vacuum pump system, two evacuation branch pipe(tube)s 6 are respectively provided with a vacuum main valve 8；Wherein, described operating platform 2 lower section is logical
Cross installing rack and be set up in molten steel and melt down above line guide rail 9, and operating platform 2 and molten steel melt down to leave between line guide rail 9 and supply ladle
10 spaces passed through.Wherein, vacuum container cover 4 is additionally provided with the searchlight for illuminating to molten steel and for imaging to molten steel
Photographic head.
In the present invention, vd stove is crossed on molten steel and melts down above line, its own does not interfere with molten steel and melts down normally making of line
With can melt down, by molten steel, the conveying that line carries out ladle, thus dramatically saves on floor space so that steel-making is given birth to simultaneously
Producing line integral layout more compact and reasonable, saves device layout cost.
So, during steel-making, molten steel melts down line guide rail by molten steel in ladle and is transported to operating platform one side-lower, then
Ladle is hung in the vacuum tank treating work state, connect argon-blowing device to ladle argon-blown and thermometric samples；Close this vacuum tank pair
Answering the vacuum main valve on evacuation branch pipe(tube), simultaneously need to closing the vacuum main valve on another evacuation branch pipe(tube), then starting
Vacuum pump system carries out forvacuum；In advance exhaust finish after, by vacuum container cover car from the standby station movement between two vacuum tanks to
Production station above this vacuum tank, vacuum container cover is covered this vacuum tank, opens the vacuum master on corresponding evacuation branch pipe(tube)
Valve evacuation carries out refining treatment；Open vacuum container cover after being disposed, vacuum container cover car returns standby station, again thermometric,
Sample, determine hydrogen, determine oxygen and determine the hydrogen-oxygen content of molten steel, require to feed silk adjusting component according to molten steel composition, finally stop Argon
And hanging out ladle, the vacuum refining of liquid steel completing single-station is processed；Standby station is returned in vacuum container cover car in this processing procedure
Afterwards, that is, start simultaneously at another station to process according to the vacuum refining of liquid steel of above-mentioned steps flow process, realize at double alternate cycles
Reason.So not only share a set of vacuum container cover and pumped vacuum systems, save component cost, and taken out in a station
Vacuum finish after process step when, another station can first carry out forvacuum process, shortens evacuation overall required
Time, the time that significantly reduces saves consumption, improves work efficiency.
Wherein, vacuum container cover car includes overall appearance is in flat car body 11, and car body 11 4 end has downward support
Arm 12 is simultaneously connected on vacuum container cover car guide rail 3 in support arm lower end installation roller, car body 11 lower surface side interval peace
Equipped with two hydraulic cylinders 13, hydraulic cylinder extension arm arranges inwards and is connected with two chains 14, two chains in telescopic arm front end
14 front ends each bypass forward two fixed pulleys that time interval is arranged on car body backward under be connected on vacuum container cover 4, institute
The Hydraulic Station 15 stating two hydraulic cylinders 13 is arranged on car body 11 upper surface.
So, when needing to close vacuum container cover, vacuum container cover car only need to be controlled to run to the corresponding vacuum producing station
Above tank, its telescopic arm is controlled to stretch out by hydraulic cylinder, vacuum container cover leans on gravity gradually descending and drops into vacuum tank tank mouth and sets
In the seal groove put, complete sealing by rubber seal and close；When needing to open vacuum container cover, only need Reverse Turning Control hydraulic cylinder
Telescopic arm is retracted, you can realize the lifting to vacuum container cover by chain, completes to open.
Wherein, four chains 14 junction point on vacuum container cover is uniformly distributed along annular around vacuum container cover axial line, with
Beneficial to keeping balance, improve manipulation stability.
Wherein, described hydraulic cylinder 13 rear end is hinged on car body 11 by horizontally disposed hinge, before hydraulic cylinder extension arm
End connects two chains 14 by an adaptor, and adaptor lower end coordinates on a horizontal sliding table horizontally slidablely.This
Sample, is more favorable for improving the stability that hydraulic cylinder controls vacuum container cover.
Wherein, adaptor one end bottom directly connects with a chain, and a horizontally disposed connection is passed through on this end top
Bar 16 and another chain connect, and so can preferably improve structural stability, improve control stability.
Wherein, described car body 11 is also fixedly installed fairlead 17 straight down, is equipped with fairlead 17 and leads
To post 18, lead 18 lower end is fixed on vacuum container cover straight down.So, fairlead and lead constitute guiding mechanism,
Control vacuum container cover move up and down direction accuracy it is ensured that closing process accurately and reliably.
Wherein, described operating platform 2 is overall t-shaped, and its wider side two ends arranges two vacuum tanks 1, narrower by one
It is provided with operating room 19 above side.
So, operating room is set, can conveniently realize the electrical control to refining process.So that operating platform is had simultaneously
Simple and compact for structure, the feature of save space.
Wherein, on operating platform 2, vacuum tank underlying surfaces are additionally provided with thermal insulation layer, with the ladle high temperature preventing lower section from passing through
Impact to vacuum tank is it is ensured that the normal of vacuum tank uses and service life.
Wherein, described operating platform 2 is additionally provided with vacuum tank sealing ring protection mechanism, is horizontally set on operation including one
Slag trap 23 below vacuum container cover car on platform and above vacuum tank tank mouth height, the mobile route of Splashproof cover in vacuum tank
Projection vertically drops in the width range of slag trap, and slag trap is provided with flexible away from the side corresponding to vacuum tank
Device 25, the expansion link telescopic direction of retractor device 25 is consistent with Splashproof cover mobile route direction, and expansion link front end is connected to gear
On slag plate 23 and slag trap 23 front end can be driven to stretch out be covered in above corresponding vacuum tank tank mouth sides adjacent.
Because this vd furnace structure is using dry-type vacuum pumping system, in order to reduce vapor, vacuum pump is hindered and damaged,
It is not provided with cooling water in vacuum tank Jar opening sealer groove, therefore need using above-mentioned protection mechanism, the rubber seal in seal groove to be entered
Row protection.After arranging above-mentioned protection mechanism, in actual production, when vacuum tank application of vacuum terminates, in vacuum tank, vacuum breaker is extremely
Recover normal pressure, lifting vacuum container cover 4 to upper limit, then start retractor device, drive slag trap to forward extend out and cover in rubber
Above sealing ring, burn out rubber seal to stop the high-temperature steel slag on Splashproof cover from dropping in seal groove.Vacuum container cover car moves
To standby station, pushing off the slag sheet reset.Or vacuum container cover car will travel to producing before station, also first slag trap to be started shelters from
Rubber seal, until after vacuum container cover garage sails to production station, pushing off the slag sheet reset, vacuum container cover falls and proceeds by vacuum
Process.Thus cooling water conservation sealing ring need not be adopted, it can be avoided that cooling water produces steam to damage dry vacuum system,
Simultaneously good to sealing ring protection effect, ensure that sealing ring tightness and service life.
Wherein, described slag trap 23 is the corresponding consistent arcuate structure of radian with the vacuum tank tank mouth of adjacent side.So,
Only a little distance need to be moved can block sealing ring just, the movement of Splashproof cover will not be caused to hinder simultaneously.
Wherein, described slag trap 23 lower end both sides are provided with roller 26, and roller 26 rolls cooperation and supports on the operational platform
Along along the guide rail 27 of the mobile route direction setting of Splashproof cover.As such, it is possible to the convenient supporting to slag trap and control are moved.
Wherein, described slag trap 23 is obtained for decorative pattern Steel material.So, slag trap surface roughness is high, facilitates workman to stand
Vertical operation, is difficult to fall down.
Wherein, described retractor device 25 has two sets and is respectively disposed at slag trap away from the side of corresponding vacuum tank 1
End positions.So, retractor device force is made more to balance, work process is more reliable.
Wherein, described retractor device 25 adopts cylinder.So there is structure simple, with low cost, beneficial to control and other effects.
Wherein, it is provided with cylinder protective cover 28 above cylinder, preferably to protect cylinder.
Wherein, in pumped vacuum systems, evacuation main pipeline 7 is also connected be provided with cooler 29 and defecator (not
Display).
So, cooler can cool down to the gas extracted out, and defecator can filter out the ash in gas bleeding
Dirt (typically adopt sack cleaner), it is to avoid gas bleeding temperature is too high or inclusion of dirt causes to vacuum pump to damage, and protects
Card vacuum pump job stability, extends service life of vacuum pump.
Wherein, on evacuation branch pipe(tube) 6, also it has been arranged in parallel internal diameter positioned at vacuum main valve side and has been less than evacuation branch pipe(tube)
The by-pass line 30 of internal diameter, described by-pass line 30 is also equipped with bypass pipe switching control pilot 31.
So, in pumped vacuum systems, it is provided with by-pass line, when closing vacuum main valve carries out pre- taking out, it is right to simultaneously close off
The bypass pipe switching control pilot answered, exhausts in advance and (stops when being typically evacuated in advance about vacuum main road internal gas pressure 67 handkerchief) after finishing, first
Open bypass pipe switching control pilot so that the evacuation branch pipe(tube) of vacuum main valve rear and front end can first pass through the bypass of minor diameter
The preliminary connection of pipeline carry out pressure release so that before and after vacuum main valve pipeline upward pressure close to balance when, then open vacuum main valve, close
Bypass pipe switching control pilot, carries out evacuation.So because by-pass line internal diameter is less, rear and front end will not be caused during pressure release
Excessive impact and fluctuation.Pressure release opens vacuum main valve (a when will not be excessive to the pressure differential of vacuum main valve rear and front end position again
As pressure release to vacuum tank intrinsic pressure strong be 30 kPas, venting duration is the 90-120 second, ensure that pressure leak process and subsequently opens
The stablizing of vacuum main valve process), two ends will not form moment excessive pressure differential, does not result in big pressure oscillation.And then keep away
Exempt from the influence of fluctuations of vacuum main valve two ends air pressure impact, prevent slag steel expulsion events it is ensured that defecator and vacuum
The using effect of pumping system and service life.
Wherein, be additionally provided with pipeline air pressure detection probe in evacuation main pipeline 7, described pipeline air pressure detection probe and
Tank internal gas pressure detection probe all with one controller 32 in vacuum tank is connected, and described vacuum main valve and bypass pipe switching control pilot are equal
For solenoid electric valve, the electric control part module electrical connection with vacuum main valve and bypass pipe switching control pilot respectively of described controller.
Controller is arranged at operating room 19 to facilitate operational control.
So, above-mentioned control process can be realized electrification and automatically controls.Ensure to control accurately timely, raising evacuation effect
Really.
Wherein, described by-pass line 30 is additionally provided with a bypass pipe circulation control valve (not shown).As such, it is possible to
Control to adjust the ventilation flow rate of by-pass line by the bypass pipe control valve that circulates it is ensured that not resulting in the pressure differential of moment during pressure release
Excessive, it is to avoid pressure release causes to fluctuate.
Claims (10)
1. a kind of pair of tank list lid formula vd refine furnace structure, including two vacuum tanks of spacing parallel arranging setting, is provided with vacuum tank
Argon-blowing device and tank internal gas pressure detection probe, also include being horizontally placed on the operating platform of vacuum tank tank mouth height and position, behaviour
Make vacuum container cover car is additionally provided with platform, the roller cooperation below vacuum container cover car is mounted on flat outside two vacuum tanks
On the vacuum container cover car guide rail of row setting, it is connected with vacuum container cover below vacuum container cover car, vacuum container cover is included positioned at upper
Side and for and vacuum tank install cooperation enclosing cover and be hung at below enclosing cover be used for and ladle cooperation Splashproof cover, vacuum tank tank
Mouth is provided with a circle seal groove, is provided with rubber seal, also includes pumped vacuum systems in seal groove, described pumped vacuum systems bag
Include two evacuation branch pipe(tube)s, one end of two evacuation branch pipe(tube)s connects with the sealing of corresponding vacuum tank respectively, and the other end leads to
Cross threeway and be connected to evacuation main pipeline and be connected to vacuum pump system, two evacuation branch pipe(tube)s are respectively provided with a vacuum
Main valve；It is characterized in that, below described operating platform, molten steel is set up in by installing rack and melts down above line guide rail, and operating platform
With molten steel melts down and leaves the space passed through for ladle between line guide rail.
2. as claimed in claim 1 double tank list lid formula vd refine furnace structures it is characterised in that vacuum container cover car include overall outer
Seeing is in flat car body, and car body four end has downward support arm and is connected in vacuum in support arm lower end installation roller
On cover car guide rail, car body lower surface side interval is provided with two hydraulic cylinders, and hydraulic cylinder extension arm is arranged and inwards flexible
Arm front end is connected with two chains, and two chain front ends each bypass forward time interval and are arranged on two fixed pulleys on car body
It is connected on vacuum container cover under backward, the Hydraulic Station of described two hydraulic cylinders is arranged on car body upper surface.
3. as claimed in claim 2 double tank list lid formula vd refine furnace structures it is characterised in that described hydraulic cylinder rear end pass through water
The hinge of flat setting is hinged on car body, and hydraulic cylinder extension arm front end is passed through an adaptor and connected two chains, under adaptor
End coordinates on a horizontal sliding table horizontally slidablely.
4. as claimed in claim 2 double tank list lid formula vd refine furnace structures it is characterised in that on described car body also straight down
It is fixedly installed fairlead, in fairlead, is equipped with lead, lead lower end is fixed on vacuum container cover straight down.
5. as claimed in claim 1 double tank list lid formula vd refine furnace structures it is characterised in that described operating platform integrally be in t
Shape, its wider side two ends arranges two vacuum tanks, is provided with operating room above narrower side.
6. as claimed in claim 1 double tank list lid formula vd refine furnace structures it is characterised in that also setting up on described operating platform
There is vacuum tank sealing ring protection mechanism, be horizontally disposed with the operational platform below vacuum container cover car and above vacuum tank including one
The slag trap of tank mouth height, the mobile route of Splashproof cover projection vertically in vacuum tank drops into the width model of slag trap
In enclosing, slag trap is provided with retractor device, the expansion link telescopic direction of retractor device and splashproof away from the side of corresponding vacuum tank
Lid mobile route direction is consistent, and expansion link front end is connected on slag trap and pushing off the slag front edge of board can be driven to stretch out and is covered in correspondence
Above vacuum tank tank mouth sides adjacent.
7. as claimed in claim 6 double tank list lid formula vd refine furnace structures it is characterised in that described slag trap lower end both sides set
It is equipped with roller, roller rolls cooperation and supports on the operational platform along along the guide rail of the mobile route direction setting of Splashproof cover.
8. as claimed in claim 1 double tank list lid formula vd refine furnace structures it is characterised in that in pumped vacuum systems, evacuation
It is also connected with main pipeline being provided with cooler and defecator.
9. as claimed in claim 8 double tank list lid formula vd refine furnace structures it is characterised in that on evacuation branch pipe(tube), being located at
Vacuum main valve side is also arranged in parallel the by-pass line that internal diameter is less than evacuation branch pipe(tube) internal diameter, and described by-pass line is also pacified
Equipped with bypass pipe switching control pilot.
10. as claimed in claim 9 double tank list lid formula vd refine furnace structures it is characterised in that also setting in evacuation main pipeline
It is equipped with pipeline air pressure detection probe, the tank internal gas pressure detection probe all with described pipeline air pressure detection probe and vacuum tank
Controller is connected, and described vacuum main valve and bypass pipe switching control pilot are solenoid electric valve, and described controller is respectively and vacuum
The electric control part module electrical connection of main valve and bypass pipe switching control pilot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510291582.8A CN104846152B (en) | 2015-06-01 | 2015-06-01 | Double-tank single-cover VD (vacuum degasser) refining furnace structure |
Applications Claiming Priority (1)
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| CN100484659C (en) * | 2007-02-15 | 2009-05-06 | 浙江天马轴承股份有限公司 | Incorporated device for vacuum steel ladle degassing and vacuum casting a plurality of steel ingots |
| DE102008027006A1 (en) * | 2007-12-03 | 2009-06-04 | Sms Mevac Gmbh | Apparatus for the secondary and vacuum metallurgical treatment of liquid steel |
| CN101871035A (en) * | 2010-05-31 | 2010-10-27 | 北京科技大学 | Refining device and vacuum refining process for use in non-oriented silicon steel production |
| CN202297678U (en) * | 2011-10-31 | 2012-07-04 | 莱芜钢铁股份有限公司 | Single-tank-cap double-tank-body vacuum degassing (VD) furnace |
| CN202492540U (en) * | 2012-02-23 | 2012-10-17 | 西安重鑫电炉设备有限公司 | Energy saving vacuum degassing (VD)/vacuum oxygen degassing (VOD) vacuum refining furnace based on full automatic mechanical pump group |
| CN202849478U (en) * | 2012-08-28 | 2013-04-03 | 芜湖新兴铸管有限责任公司 | VD (vacuum distillation) vacuum furnace shielding furnace cover |
| CN202898459U (en) * | 2012-09-04 | 2013-04-24 | 树赢(国际)控股西安装备有限公司 | Convenient and practical vacuum degassing(VD) refining furnace |
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