CN204630392U - A kind of smelting furnace electrode preheat device case cooling structure - Google Patents
A kind of smelting furnace electrode preheat device case cooling structure Download PDFInfo
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- CN204630392U CN204630392U CN201520345336.1U CN201520345336U CN204630392U CN 204630392 U CN204630392 U CN 204630392U CN 201520345336 U CN201520345336 U CN 201520345336U CN 204630392 U CN204630392 U CN 204630392U
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Abstract
The utility model discloses a kind of smelting furnace electrode preheat device case cooling structure, it is characterized in that, comprise the coil cooling-water duct that housing inner inductive coil inner hollow is formed, housing side is also provided with the coil cooling water inlet and coil coolant outlet connected with the two ends of coil cooling-water duct short transverse, also comprise the cooling water chamber that housing bottom is arranged, cooling water chamber side is provided with inlet channel, and opposite side is provided with outlet conduit.It is simple that the utility model has structure, can cool housing, to avoid warm middle shell temperature too high, and the advantage in extension fixture service life.
Description
Technical field
The utility model relates to the smelting furnace electrode preheat device that a kind of electric slag refusion and smelting uses, and particularly relates to a kind of smelting furnace electrode preheat device case cooling structure.
Background technology
Electroslag smelting stove is a kind of equipment of electric slag refusion and smelting.Its structure of electroslag smelting stove mainly comprises the crystallizer of entirety in oven-like, is positioned at the electrode assembly of crystallizer side, wherein crystallizer lower end is provided with the end water tank of cooling, electrode assembly comprises pillar, on pillar, movable sleeve is provided with transverse arm, transverse arm is just being installed crystallizer and is extending down into the electrode of crystallizer, electrode comprise epimere for the standing part that is connected with transverse arm and hypomere for smelting time be dissolved into Smelting Part in electroslag; Also comprise for controlling elevating mechanism that transverse arm is elevated along pillar and for controlling the rotating mechanism that transverse arm rotates around column axle center.
Arrange above water mold in electroslag smelting process and fill the slag bath treating melting, adopt terminal clamp to clamp cylindrical electrode, and allow electrode, slag bath, metal bath, steel ingot, end water tank can form current loop by short net wire and transformer.When carrying out electroslag smelting, first this electrode is inserted in slag away from the end of electroslag smelting terminal clamp, be energized to electrode subsequently, in galvanization, electrode and slag bath release Joule heat, by the regulus fusing in slag bath, motlten metal pools liquid state, through slag bath, falls into crystallizer and forms metal bath, and simultaneously by water-cooled effect, quick solidification forms steel ingot.Before ingot solidification, the metal bath above it and slag bath, play insulation and feeding effect, ensures the compactness of steel ingot.In smelting process, crystallizer inwall is formed with the thin skull of one deck, not only makes surface of steel ingot bright and clean, also play insulation and heat-blocking action, more heat lower portion is conducted, is conducive to steel ingot crystallographic orientation from bottom to top.Based on above reason, the ingot quality produced by electroslag smelting is good, performance is excellent, and the plasticity under the low temperature of steel alloy, room temperature and high temperature and impact flexibility strengthen, and steel extend service life, therefore electroslag smelting technique is extensively promoted the use of in the industry.
But this existing electroslag smelting stove, there is following defect: 1, electroslag smelting is generally the process that batch is smelted, but existing electroslag smelting stove, during single cover system work, need consuming time except smelting process, electroslag before smelting loads, and electrode clamping preparation etc. all needs consuming time, makes overall production efficiency of smelting comparatively low.2, in smelting process, electrode to insert after electroslag energising again and heats, and electrode blank alternately exists the problems such as the huge temperature difference between stylish blank and molten bath, after new electrode just enters molten bath if do not processed may there is bursting or falling the phenomenon of block due to steep temperature rise in blank termination; Fall into below crystallizer and melt molten steel, gently then affect production, produce to electroslag smelting and bring operation dangerous.More serious impact is after new electrode blank enters molten bath, because blank termination and molten bath excessive temperature differentials inevitably cause bath temperature in crystallizer suddenly to reduce, breaks normal smelting environment.Thus make ESR ingot occur strangling shell, slag runner, composition inequality, containing the mass defects such as assorted, have a strong impact on electroslag ingot smelting quality.
In order to solve above-mentioned safety issue, applicant considers to devise a kind of smelting furnace electrode preheat device, its structure comprises housing, enclosure interior be provided with refractory insulating material and formed at middle part one vertically arrange and upper end open can the heated chamber that inserts of power pole lower end, be embedded with in described refractory insulating material and form heater around the heated chamber lift induction coil arranged that spirals.
Like this, adopt this preheating device, the preheating to electrode can be realized, and then greatly improve its smelting operation security.But wherein, also need to consider to solve how to cool housing, to avoid warm middle shell temperature too high, the problem in extension fixture service life.
Utility model content
For above-mentioned the deficiencies in the prior art, technical problem to be solved in the utility model is: how to provide a kind of structure simple, can cool housing, to avoid warm middle shell temperature too high, the smelting furnace electrode preheat device case cooling structure in extension fixture service life.
In order to solve the problems of the technologies described above, the utility model have employed following technical scheme:
A kind of smelting furnace electrode preheat device case cooling structure, it is characterized in that, comprise the coil cooling-water duct that housing inner inductive coil inner hollow is formed, housing side is also provided with the coil cooling water inlet and coil coolant outlet connected with the two ends of coil cooling-water duct short transverse, also comprise the cooling water chamber that housing bottom is arranged, cooling water chamber side is provided with inlet channel, and opposite side is provided with outlet conduit.
Like this, coil adopt water quench, prevent coil and housing own temperature too high, improve coil and housing protected effect, increase the service life; The bottom that the cooling water chamber simultaneously arranged can not be able to relate at coil cooling-water duct realizes cooling, further cooling protection electrode preheat device, extension fixture life-span.
Further, described coil cooling-water duct and cooling water chamber all can be connected in the cooling recirculation system of water tank at the bottom of smelting furnace crystallizer.Like this, structure simply and do not increase extra cooling infrastructure cost.Certainly both also can connect different cooling water sources respectively, distinguish like this to the cooling water of diverse location, improve cooling effectiveness, ensure cooling effect.
In sum, it is simple that the utility model has structure, can cool housing, to avoid warm middle shell temperature too high, and the advantage in extension fixture service life.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation that have employed the electroslag smelting electric furnace system of the utility model structure when specifically implementing.
Fig. 2 is the structural representation of single electrode preheating device in Fig. 1.
Fig. 3 is the schematic layout pattern of the electroslag smelting electric furnace system of Fig. 1.
Fig. 4 is the structural representation of the end water tank of crystallizer in Fig. 1.
Fig. 5 is the structural blast schematic diagram of Fig. 4.
Fig. 6 is the structural representation of independent casing part in Fig. 4.
Detailed description of the invention
The utility model is described in further detail for the electroslag smelting electric furnace system that have employed the utility model structure below in conjunction with a kind of and accompanying drawing thereof.
As Figure 1-3, a kind of electroslag smelting electric furnace system, comprise the overall crystallizer 1 ' in oven-like, be positioned at the electrode assembly of crystallizer 1 ' side, wherein crystallizer 1 ' lower end is provided with the end water tank of cooling, electrode assembly comprises pillar 2 ', on pillar, movable sleeve is provided with transverse arm 3 ', transverse arm 3 ' just installs to crystallizer the electrode 4 ' extending down into crystallizer, electrode 4 ' comprise epimere for the standing part that is connected with transverse arm and hypomere for smelting time be dissolved into Smelting Part in electroslag, electrode assembly also comprises for controlling elevating mechanism that transverse arm is elevated along pillar and for controlling the rotating mechanism that transverse arm rotates around column axle center, wherein, described electrode assembly is two covers and correspondence is arranged on crystallizer 1 ' both sides, also comprise electrode preheat device, electrode preheat device have one vertically arrange and upper end open can the heated chamber that inserts of power pole lower end, also there is the heater that can be used in the heated by electrodes inserted.
Be provided with two cover electrode assemblies same crystallizer altogether like this, be provided with electrode preheat device simultaneously, like this when a set of electrode assembly is when smelting use, another set of electrode assembly not only can carry out the work such as installing electrodes, can also be inserted in electrode preheat device by mounted electrode, preheating is carried out to mounted electrode, under the induction of coil electromagnetic field of high frequency, stretch into the electrode blank termination fast heating of burner hearth, quick heating, thermal loss is little, and temperature homogeneity is high.When smelting, the Electrode used is complete and remove, and again feeds in raw material and after arranging crystallizer, preheated electrode can be moved in crystallizer and smelt.Circulation like this.Both saved the time, improve efficiency, simultaneously before metal electrode blank carries out remelting, preheating was carried out to electrode blank termination, after can preventing metal electrode from entering slag, electrode blank termination steep temperature rise and occur the phenomenon bursting or fall block; Also, after can preventing electrode blank from entering molten bath, ESR ingot is made to occur strangling shell, slag runner, composition inequality, containing the mass defects such as assorted because bath temperature rapid drawdown is low.Therefore improve security and metallurgical effect.
Wherein, elevating mechanism comprises a leading screw 5 ' vertically installed side by side with column, and transverse arm 3 ' one end is fixedly installed the nut be engaged on leading screw 5 ', and leading screw 5 ' lower end is connected with a lifting motor 6 ' and can leans on its driven rotary; Described column 2 ' comprises column shell and column inner core, column inner core is fixed on ground, column shell rotatably coaxial sleeve is located at outside column inner core, column shell lower end is fixedly connected with a base plate 19 ', described lifting motor 6 ' is all relative with leading screw 5 ' to be fixedly mounted on base plate 19 ', also be provided with electric rotating machine 7 ' be connected with column shell form rotating mechanism, electric rotating machine 7 ' can drive column shell to rotate around column inner core.This spline structure is simple, and controls all fast very convenient to the lifting of transverse arm and rotating.
Wherein, described electrode preheat device is one, and in described two cover electrode assemblies, the rotate path place circle of two electrodes on respective transverse arm has two crossing intersection points, and described crystallizer 1 ' and electrode preheat device are arranged in two position of intersecting point separately.After such layout, two electrodes can share an electrode preheat device, utilize layout structure to save equipment cost dexterously.
Wherein, described electrode preheat device comprises housing 8 ', housing 8 ' inside be provided with refractory insulating material 9 ' and middle part formed heated chamber, be embedded with in described refractory insulating material 9 ' around heated chamber lift spiral arrange induction coil 10 ' formed heater.
Like this, refractory insulating material can thermal insulation and insulation, forms good protective layer, increases the service life.Heater adopts the non-contact thermal of induction coil, under the induction of coil electromagnetic field of high frequency, make the electrode blank termination fast heating stretching into heated chamber, quick heating, thermal loss is little, temperature homogeneity is high, good heating effect and efficiency can be had, induction coil is laid in fireproof high-temperature resistant insulating materials protective layer and avoids and electrode contact simultaneously, in case the improper damage induction coil of practical operation, as use in electrode blank termination clamping not just or telescopic location improper, make it collide with induction coil or contact dozen arc to damage the problems such as induction coil, solve the security hidden trouble existed in its technology.It can not need to change by Long-Time Service, and long service life is safe, efficient, energy-conservation.
Wherein, induction coil 10 ' inner hollow forms coil cooling-water duct, housing 8 ' side is also provided with the coil cooling water inlet 11 ' and coil coolant outlet 12 ' connected with the two ends of coil cooling-water duct short transverse.Like this, coil adopts water quench, prevents coil own temperature too high, improves coil protect effect, increase the service life.Coil cooling-water duct can also be connected in the cooling recirculation system of water tank at the bottom of crystallizer, does not increase extra cooling infrastructure cost.
Wherein, be also provided with protective gas passage 13 ' in described housing, the inner gas outlet of protective gas passage 13 ' is positioned at bottom heated chamber, and outer end air inlet is used for external protection source of the gas.Like this, during preheating, can inert gas shielding be provided, the oxidative phenomena avoiding electrode blank termination to exist in warm, prevent the scaling loss of active element, prevent the oxygen content in steel from increasing, ensure metallurgical effect.
Wherein, described protective gas passage 13 ' is the annular channel structure arranged higher than heated chamber inner bottom surface, and described gas outlet is equally distributed multiple and be circumferentially communicated to obliquely bottom heated chamber along identical incline direction around circular passage circumference.Like this, after venthole can be made to give vent to anger, from the upwards annularly flow of side-lower in protective device, better the air in script furnace chamber can be squeezed furnace chamber inner space, improve protected effect,
Wherein, described housing 8 ' entirety is in drum-shaped, and heated chamber is the cylindrical of coaxial setting, and case top lid establishes the cap 14 ' being fixed with coupling, cap 14 ' middle part is provided with the via hole coaxial with heated chamber, and via diameter is greater than electrode external diameter and is less than heated chamber diameter.Like this; housing and heated chamber cross section are circle; the device space can be saved; improve the efficiency of heating surface; the cap arranged can limit the position that electrode inserts, and prevents electrode and heated chamber contact internal walls and produces destruction, and can to limit protective gas excessive for cap simultaneously; improve gas shield effect, improve electrode protection effect.In addition, cap is that detachable lid is established and is fixedly installed, and can facilitate installation setting and the repair and maintenance of housing interior structure.
Wherein, be positioned at induction coil top position and be also provided with temperature sensor 15 ' in described heated chamber, temperature sensor 15 ' is for non-contact temperature sensor and be connected with an alarm be positioned at outside housing.Like this, can the termination preheating of Measurement accuracy electrode blank time actual temperature.Thus make the pre-heat effect that electrode blank termination reaches very good.When temperature overheating being detected, can be given the alarm by alarm, it is overheated to prevent, and improves electrode protection effect.Adopt non-contact temperature sensor avoid with electrode contact and cause destroy, alarm can adopt buzzer or warning lamp.
Wherein, described housing 8 ' bottom is also provided with cooling water chamber 16 ', and cooling water chamber 16 ' side is provided with inlet channel 17 ', and opposite side is provided with outlet conduit 18 '.Like this, cooling water chamber can cooling protection electrode preheat device further, the extension fixture life-span.Cooling water chamber also can be connected in the cooling recirculation system of water tank at the bottom of crystallizer, does not increase extra cooling infrastructure cost.
The end cisten mechanism of the crystallizer in said system as Figure 4-Figure 6, comprise casing 2, the connection of casing 2 side is provided with water inlet pipe 4 and outlet pipe 5, casing 2 upper end open and be formed with the end water tank panel 8 of rectangle frame plate structure to surrounding horizontal-extending at opening part, end water tank panel 8 upper surface correspondence is equipped with the rubber gasket 6 of rectangle frame plate structure, covers again and be provided with flat copper coin 3 above rubber gasket 6; Wherein, casing 2 inside is also provided with cooling water flow-guiding structure for making the vortex flow of cooling water formation from casing center to surrounding, cooling water flow-guiding structure comprises and is positioned at casing inner bottom surface and vertically arranges and spiral spiral deflector 9, leave the space for current flowing above spiral deflector 9 upper surface and casing between copper coin lower surface, spiral deflector 9 is centrally located at casing 2 inner bottom surface medium position and water inlet pipe end extends to spiral deflector center.
Like this, spiral deflector can guide current to be formed in the middle part of water tank to the helical flow of both sides well, current water inlet and flow direction and copper coin produce thermal temperature Region Matching, produce heat transfer effect better, improve water tank cooling effectiveness and the cooling uniformity, prevent copper coin to be heated inequality and being out of shape better.
Wherein, described spiral deflector 9 sidewall is fixedly installed water fender 10 along self extending spirally direction uniform intervals, water fender 10 upper end is obliquely installed to flow reversal direction, water fender side is fixed on spiral deflector 9, leaves the space for water flow between opposite side and the spiral deflector of correspondence.Such water fender can cause stream and formed local vortex, improve heat exchanger effectiveness better.During concrete enforcement, spiral deflector and water fender are stainless steel and obtain, and on the one hand can prevent corrosion, generate incrustation scale, also can extend water tank service life.
Wherein, be also provided with above copper coin 3 and be fixed mechanism for realizing being fixed copper coin and rubber gasket.
Like this, adopt and be fixed mechanism from top realization being fixed copper coin, realize fixing frame mode with existing employing turnbuckle through copper coin, rubber gasket and end water tank panel to compare, can not produce because bolt is through the problem causing after Mnltilayered structures distortion being difficult to dismantle, be easy to remove and repair.Copper coin surface is without the need to arranging the bolt hole of too much high-precision requirement simultaneously, and reduce requirement component being arranged to precision, copper coin is after whole plate structure, not only required precision reduces, and self non-deformability increases, during repair and replacement, copper coin can realize turning over conversion surface continuation use, reduces cost.
Wherein, the described mechanism that is fixed comprises a compression connector 1, compress connector 1 lower end to be connected with casing 2 and load, compress the installing plate that corresponding rubber gasket 6 top position, connector 1 upper end has the horizontal rectangular frame structure of a coupling, on installing plate, corresponding rubber gasket is vertically provided with a circle screwed hole 7, in screwed hole under be connected with hold-down bolt 13, hold-down bolt 13 lower end is connected to copper coin 3 upper surface and realizes being fixed copper coin 3 and rubber gasket 6.
Like this, during use, only need rotatably compress bolt and its lower surface and copper coin be pushed against can realize being fixed, there is structure simple, advantage convenient to use.During concrete enforcement, compress the screwed hole uniform intervals arrangement separately of four sides on connector installing plate, convenient compression force balance.During concrete enforcement, the screw thread of screwed hole and hold-down bolt preferably adopts closely-pitched to design, and improves load effect.
Wherein, described installing plate two ends are folded to extend internally and form articulated end and form described compression connector 1 after downward-extension, and articulated end is used for and water tank panel lower surface mounting in the end coordinates fixing.Like this, compress connector from as independent dismountable version, facilitate self repair and maintenance and replacing.
Wherein, the hold-down bolt 13 above described installing plate is also arranged with a locking nut (not shown).Like this, after hold-down bolt is fixed, locking nut can be leaned on locked for hold-down bolt fixing, can prevent water tank copper coin inequality of being in use heated from causing hold-down bolt to loosen further.
Wherein, the felt pad of hard is provided with between described hold-down bolt 13 lower end head and copper coin 3 upper surface.Like this, can prevent when ensureing thrust the end water tank from use producing with hold-down bolt end further and beat arc, and damage box-like body compressing structure part upper screwed hole tooth line, increase the service life.During concrete enforcement, felt pad can directly be bonded and fixed on hold-down bolt lower surface, easy to use.
Wherein, water tank panel of the described end, rubber gasket and copper coin phase the same side are symmetrically arranged with two groups of vertically through locating holes 14 near side edge along this side perpendicular bisector, are combined with the location (not shown) that pilot pin realizes three in locating hole.Like this, during installation, first can lean on the location that locating hole and pilot pin realize end water tank panel, rubber gasket and copper coin three, and then the pressured mechanism that fastens realizes being fixed.Make its convenient assembling.Locating hole is symmetrically arranged two groups, and after facilitating copper coin turn-over, secondary uses.
During concrete enforcement, can also improve further on the basis of the above, such as a temperature sensor be connected with warning device signal can be set in water tank of the described end, like this, after end water tank cooling water temperature is abnormal, or water tank copper coin use in beat arc thinning cause coolant water temperature local rapid abnormal change time, temperature sensor detects that signal transmission can be reported to the police to warning device by variations in temperature in time.To avoid better being caused production accident and loss by arc through copper coin, promote security reliability further.
Claims (3)
1. a smelting furnace electrode preheat device case cooling structure, it is characterized in that, comprise the coil cooling-water duct that housing inner inductive coil inner hollow is formed, housing side is also provided with the coil cooling water inlet and coil coolant outlet connected with the two ends of coil cooling-water duct short transverse, also comprise the cooling water chamber that housing bottom is arranged, cooling water chamber side is provided with inlet channel, and opposite side is provided with outlet conduit.
2. smelting furnace electrode preheat device case cooling structure as claimed in claim 1, it is characterized in that, coil cooling-water duct is connected in the cooling recirculation system of water tank at the bottom of smelting furnace crystallizer.
3. smelting furnace electrode preheat device case cooling structure as claimed in claim 1, it is characterized in that, cooling water chamber is connected in the cooling recirculation system of water tank at the bottom of smelting furnace crystallizer.
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| CN201520345336.1U CN204630392U (en) | 2015-05-26 | 2015-05-26 | A kind of smelting furnace electrode preheat device case cooling structure |
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| CN201520345336.1U CN204630392U (en) | 2015-05-26 | 2015-05-26 | A kind of smelting furnace electrode preheat device case cooling structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108489279A (en) * | 2018-03-26 | 2018-09-04 | 宝钢工程技术集团有限公司 | A kind of full water cooling column head and its full water cooling method |
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2015
- 2015-05-26 CN CN201520345336.1U patent/CN204630392U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108489279A (en) * | 2018-03-26 | 2018-09-04 | 宝钢工程技术集团有限公司 | A kind of full water cooling column head and its full water cooling method |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150909 Termination date: 20210526 |