CN206474671U - It is a kind of to protect the molten steel transporter of tapping and the electric furnace steel-making system of tapping be protected - Google Patents

Abstract

Protect the molten steel transporter of tapping the utility model discloses a kind of and the electric furnace steel-making system of tapping can be protected, Ferrous Metallurgy steelmaking technical field.Electric furnace steel-making system of the present utility model includes electric furnace body and molten steel transporter; molten steel transporter includes buggy ladle and tapping protection pipe; buggy ladle includes protection pipe and regulates and controls unit and ladle tank; tapping protection pipe is installed on protection pipe regulation and control unit, and protection pipe regulation and control unit is used to regulate and control tapping protection pipe and moved in vertical direction or horizontal direction；Protection pipe of tapping includes protection sleeve pipe and connection sleeve pipe, and the cannula inlet port end of protection sleeve pipe is connected with connection sleeve pipe, and constitutes the tapping protection pipe of insertion, has gap between the inwall of protection sleeve pipe when molten steel flows through protection sleeve pipe.Tapping protection pipe of the present utility model sets up relative closed molten steel channel, effectively limit the gas flowing of molten steel surface, reduces molten steel to the adsorbance of the pernicious gases such as nitrogen hydrogen, improve the quality of steel.

Description

It is a kind of to protect the molten steel transporter of tapping and the electric furnace steel making of tapping be protected System

Technical field

The utility model is related to Ferrous Metallurgy steelmaking technical field, more specifically to a kind of steel for protecting tapping Spinal Cord Oedema device and the electric furnace steel-making system that tapping can be protected.

Background technology

Ladle tank is the transfer container that smelting molten steel is completed, and is generally transported molten steel using ladle tank after the completion of smelting molten steel To next process, molten steel conveying arrangement is the visual plant in molten steel transport process, also important in steelmaking process Link.Molten steel is directly poured into or injected in ladle tank during tapping by converter.

After molten steel is tapped through electric furnace smelting external refining and continuous casting process to the control of oxygen in steel, nitrogen, hydrogen and temperature very Strictly.But, to being difficult to during molten steel transporter to protect molten steel, (molten steel transporter is in Sheng in tapping for converter The process of steel loading water is the tapping process of converter), i.e., it is difficult to protect molten steel in converter tapping process, tapped In journey molten steel directly and air contact, so as to cause the pernicious gases such as substantial amounts of nitrogen hydrogen to enter molten steel, be degrading the performance of steel, be Follow-up external refining and continuous casting belt carry out pressure, and considerably increase production cost, reduce product quality.

Nitrogen is the harmful element in general steel grade, and in tapping process, exposed molten steel is directly contacted with air, so as to increase Nitrogen content in molten steel, typically increases 10-20ppm.Because containing certain humidity in air, molten steel hydrogenation, hydrogen will also result in White point is easily produced in steel, steel is produced hydrogen induced cracking；Reduce product quality.It is badly in need of being directed to existing molten steel tapping technique, Develop with protecting out the molten steel transporter of steel functional so that molten steel transporter when containing molten steel to tapping Protected in journey, it is to avoid objectionable impurities of the molten steel in absorption air during tapping.

Influence to temperature is very big, and this process probably continues 4-6 minutes, in tapping process, and molten steel is because of heat radiation, right Flow heat dissipation, deoxidation alloying, ladle liner heat absorption etc. cause liquid steel temperature to reduce.Therefore, using alloy heating, ladle in production Temperature drop in baking and Optimized Operation etc., reduction tapping process.But, to the heat loss through radiation produced between molten steel and air and convection current Any measure is not taken in radiating, causes molten steel radiating serious, so as to cause molten steel temperature drop to be difficult to effective control.

Find, in casting process, molten steel is protected using protection pipe, such as through retrieval：The title of innovation and creation For：Compound molten-steel protection casing tube (the patent No.：ZL99229239.5, the applying date：1999-08-20), the title of innovation and creation For：It is a kind of be used for pouring molten steel when anti-nitrogen pick-up protection pipe (number of patent application：ZL201520734792.5, the applying date：2015- 09-22).But this protection pipe is but difficult to protect molten steel in tapping process.

In addition, innovation and creation is entitled：It is a kind of to prevent the method (patent application of molten steel nitrogen pick-up in converter tapping process Number：201010588760.0, the applying date：2010-12-15), take before converter tapping and in tapping process, during control Argon Between and argon flow amount, be divided to two sections or argon gas be uninterruptedly blown into ladle, until tapping terminate.So that in ladle The argon gas discharge that air is blown into, prevents tapping from, to the molten steel and air contact in ladle, the molten steel in ladle is in all the time Argon gas guard mode, the nitrogen pick-up for both having prevented molten steel from being caused with air contact, while making easily to adsorb in bubble surface in molten steel [N] can be discharged and be removed with the floating of Argon Bubble.Although this method can prevent molten steel nitrogen pick-up to a certain extent, It is but to be difficult to molten steel transporter to protect molten steel during tapping molten steel is contained.

Utility model content

1. the utility model technical problem to be solved

The purpose of this utility model is to overcome molten steel transporter in the prior art during the molten steel of tapping is contained It is difficult to protect molten steel that there is provided a kind of molten steel transporter for protecting tapping and the electric furnace steel making system that can protect tapping System；

A kind of molten steel transporter for protecting tapping wherein provided, installs tapping protection pipe, molten steel on buggy ladle Transporter is when containing the molten steel of converter, and by tapping, protection pipe is engaged with tapping hole, and molten steel can be protected, Reduce adsorbance of the molten steel to pernicious gases such as nitrogen hydrogen；It is possible to further reduce molten steel heat loss, reduction steel-making energy consumption.

A kind of electric furnace steel-making system for protecting tapping wherein provided, including electric furnace body and molten steel transporter, lead to Cross and tapping protection pipe is installed on molten steel transporter, and tapping protection pipe is engaged with tapping hole, can be in tapping process Molten steel is protected, reduces adsorbance of the molten steel to pernicious gases such as nitrogen hydrogen in air；It is possible to further reduce molten steel Heat loss, reduction steel-making energy consumption.

2. technical scheme

To reach above-mentioned purpose, the technical scheme that the utility model is provided is：

A kind of molten steel transporter for protecting tapping of the present utility model, including buggy ladle and tapping protection pipe, it is described Buggy ladle include protection pipe and regulate and control unit and ladle tank；Above-mentioned tapping protection pipe is installed on protection pipe regulation and control unit, is protected Pillar regulation and control unit is used to regulate and control tapping protection pipe and moved in vertical direction or horizontal direction；Described tapping protection pipe includes Protection sleeve pipe and connection sleeve pipe, described connection sleeve pipe are used to be connected with tapping hole；The cannula inlet port end of described protection sleeve pipe It is connected with connection sleeve pipe, and constitutes the tapping protection pipe of insertion, the internal diameter of described protection sleeve pipe is more than the diameter of tapping hole, steel There is gap between the inwall of protection sleeve pipe when water flows through protection sleeve pipe.

Preferably, described protection pipe regulation and control unit includes vertical telescoping mechanism, horizontal extension mechanism and rotating mechanism, institute The vertical telescoping mechanism stated is fixedly installed on buggy ladle, and horizontal extension mechanism is rotatablely installed in vertical flexible by rotating mechanism The top of mechanism.

Preferably, protection sleeve pipe is conical pipe, and the internal diameter at the cannula inlet port end of protection sleeve pipe is less than cannula exit end Internal diameter, and the diameter of the internal diameter more than tapping hole at cannula inlet port end.

Preferably, the tube wall of described protection sleeve pipe sets gradually shell, thermal insulation layer and refractory masses from outside to inside.

Preferably, accommodating chamber is offered in connection sleeve pipe, accommodating chamber is used for the outside for being sleeved on tapping hole.

Preferably, the internal diameter of described accommodating chamber is more than the internal diameter at cannula inlet port end.

Preferably, connection sleeve pipe is connected by the connecting bottom board of bottom with cannula inlet port end, is provided with the connecting bottom board Pockets.

Preferably, mounting structure is provided with the top of connection sleeve pipe, described mounting structure includes boot segment and vertical section, Boot segment is used to guide connection sleeve pipe to be engaged with tapping hole, and makes tapping hole location fit in vertical section.

A kind of electric furnace steel-making system for protecting tapping of the present utility model, including electric furnace body and molten steel transporter, Tapping hole is provided with described electric furnace body, described molten steel transporter is above-mentioned molten steel transporter, molten steel transhipment Device is used to molten steel being transported to next process.

Preferably, electric furnace steel tapping case is provided with electric furnace body, the bottom of electric furnace steel tapping case is provided with tapping hole, described The angle of tapping hole and vertical direction is ε, and ε is electric furnace steel tapping inclination angle.

3. beneficial effect

The technical scheme provided using the utility model, compared with existing known technology, with following remarkable result：

(1) a kind of molten steel transporter for protecting tapping of the present utility model, installs tapping protection pipe on buggy ladle, Molten steel transporter is when containing the molten steel of converter, and by tapping, protection pipe is engaged with tapping hole, and tapping protection pipe is set up With respect to closed molten steel channel, molten steel is flowed into tapping protection pipe by tapping hole, effectively limit the gas stream of molten steel surface It is dynamic, limit the pernicious gas in air and spread into molten steel, in reduction air molten steel to the adsorbances of the pernicious gases such as nitrogen hydrogen, Improve the quality of steel；

(2) a kind of molten steel transporter for protecting tapping of the present utility model, the protection sleeve pipe for protection pipe of tapping it is interior Footpath is more than the diameter of tapping hole, has gap between the inwall of protection sleeve pipe when the molten steel is flowed through protection sleeve pipe, in the mistake of tapping Cheng Zhong, the space of molten steel and protection sleeve pipe inwall forms good insulation void layer, has good heat insulation effect to molten steel, subtracts The small heat loss of molten steel, and molten steel directly washing away to protection sleeve pipe inwall is avoided, substantially increase service life；

(3) a kind of molten steel transporter for protecting tapping of the present utility model, the tube wall of protection sleeve pipe from outside to inside according to Secondary setting shell, thermal insulation layer and refractory masses, the heat-barrier material of thermal insulation layer can effectively limit molten steel in protection sleeve pipe Heat reduces the temperature loss in tapping process to protection sleeve pipe external cooling, and then can reduce tapping temperature, saves refining Steel energy consumption；

(4) a kind of molten steel transporter for protecting tapping of the present utility model, is set free between shell and thermal insulation layer Gap layer, void layer changes the heat transfer condition of protection sleeve pipe, and limiting molten steel in protection sleeve pipe, to external heat transfer, reduces molten steel Thermal loss in tapping process, reduction steel-making energy consumption；

(5) pockets are provided with a kind of molten steel transporter for protecting tapping of the present utility model, connecting bottom board, The pockets are arranged at the circumferential edges position of connecting bottom board, tapping hole filler when the splash in tapping hole pipeline goes out, Tapping hole filler will be injected in the pockets of connecting bottom board, reduces the quality that tapping hole filler is fallen into ladle tank, can To avoid influence of the tapping hole filler to steel quality, the smelting quality of molten steel is improved；

(6) a kind of electric furnace for protecting tapping of the present utility model, the bottom of the mounting structure of connection sleeve pipe sets limited Position plate, limits gas and occurs convection current in molten steel surface, it is suppressed that gas violent flow in protection sleeve pipe, and then limit sky Pernicious gas in gas spreads into molten steel, effectively reduces molten steel heat loss, reduces the molten steel temperature produced in tapping process Drop；

(7) tapping hole is provided with a kind of electric furnace steel-making system for protecting tapping of the present utility model, electric furnace body, is protected Pillar regulation and control unit regulating tapping protection pipe is engaged with tapping hole, and the internal diameter of protection sleeve pipe is more than the diameter of tapping hole, makes steel Having gap between the inwall of protection sleeve pipe when water flows through protection sleeve pipe, it is logical that tapping protection pipe sets up relative closed molten steel Road, molten steel is flowed into tapping protection pipe by tapping hole, be effectively limit the gas flowing of molten steel surface, is limited in air Pernicious gas spreads into molten steel, greatly reduces adsorbance of the molten steel to pernicious gases such as nitrogen hydrogen, improves the quality of steel；And Molten steel heat loss is effectively reduced, the molten steel temperature drop produced in tapping process is reduced；

(8) angle of a kind of electric furnace steel-making system for protecting tapping of the present utility model, tapping hole and vertical direction is Electric furnace body deflects to tapping tapping inclination angle ε in ε, tapping process, and tapping protection pipe coordinates with tapping hole again so that the mistake of tapping The holding for protection pipe of being tapped in journey is vertical, and molten steel is flowed into after tapping protection pipe by tapping hole, molten steel it is vertical by tapping protection pipe Outflow, reduces molten steel and protection sleeve pipe inwall is washed away, improve service life.

Brief description of the drawings

Fig. 1 is the structural representation of tapping protection pipe of the present utility model；

Fig. 2 is the structural representation of tapping protection pipe protection sleeve pipe of the present utility model；

Fig. 3 is the structural representation of pockets of the present utility model；

Fig. 4 is the diagrammatic cross-section of the tapping protection pipe of the present utility model with mounting structure；

Fig. 5 is a kind of molten steel transporter overall structure diagram for protecting tapping of the present utility model；

Fig. 6 is the overall structure diagram of embodiment 7 of the present utility model；

Fig. 7 is the structural representation of steel ladle cover of the present utility model；

Fig. 8 is a kind of electric furnace steel-making system overall structure diagram for protecting tapping of the present utility model；

Fig. 9 is the structural representation of embodiment 9 of the present utility model；

Figure 10 is the schematic diagram in the tapping process of embodiment 9 of the present utility model.

Label declaration in schematic diagram：

100th, protection sleeve pipe；101st, refractory masses；102nd, thermal insulation layer；103rd, void layer；104th, shell；110th, sleeve pipe enters Mouth end；120th, cannula exit end；

200th, connection sleeve pipe；210th, accommodating chamber；220th, connecting bottom board；221st, pockets；222nd, groove slant face；230、 Mounting structure；231st, boot segment；232nd, vertical section；240th, limiting plate；241st, limiting through hole；

300th, buggy ladle；310th, car bottom plate is transported；320th, protection pipe regulation and control unit；321st, vertical telescoping mechanism；322nd, water Flat telescoping mechanism；3221st, hold assembly；323rd, rotating mechanism；330th, ladle tank；331st, steel ladle cover；332nd, molten steel introducing port； 333rd, entrance closing cover；334th, hinge；

400th, electric furnace body；410th, electric furnace steel tapping case；411st, tapping hole；420th, eccentric furnace bottom；430th, tilting equipment.

Embodiment

Hereafter the detailed description to exemplary embodiment of the present utility model with reference to accompanying drawing, and the one of accompanying drawing formation description Part, shows the enforceable exemplary embodiment of the utility model as example in the figure.Although these exemplary realities Apply example to be described in sufficient detail to enable those skilled in the art to implement the utility model, it is to be understood that it can be realized His embodiment and can various changes can be made to the utility model in the case where not departing from spirit and scope of the present utility model.Hereafter More detailed description to embodiment of the present utility model is not limited to required scope of the present utility model, and only In order to be illustrated and do not limit the characteristics of to the utility model and feature description, it is of the present utility model to propose to perform Best mode, and be sufficient so that those skilled in the art and can implement the utility model.Therefore, scope of the present utility model only by Appended claims are limited.

Hereafter detailed description of the present utility model and example embodiment can be more fully understood with reference to accompanying drawing, wherein this reality Identified with new element and feature by reference.

Embodiment 1

With reference to Fig. 1 and Fig. 5, a kind of molten steel transporter for protecting tapping of the present utility model, including the He of buggy ladle 300 Tapping protection pipe, described buggy ladle 300 includes transport car bottom plate 310, protection pipe regulation and control unit 320 and ladle tank 330 (such as figure Shown in 5)；Wheel is installed on transport car bottom plate 310, is easy to the movement of buggy ladle 300；Described ladle tank 330 is fixedly installed In transport car bottom plate 310 on, the opening upwards of ladle tank 330；Protection pipe regulation and control unit 320 is fixedly installed in transport car bottom plate 310 On；Protection pipe regulation and control unit 320 includes vertical telescoping mechanism 321, horizontal extension mechanism 322 and rotating mechanism 323, and described is perpendicular Straight telescoping mechanism 321 is fixedly installed on the transport car bottom plate 310 of buggy ladle 300, and horizontal extension mechanism 322 passes through rotating mechanism 323 are rotatablely installed in the top of vertical telescoping mechanism 321, in the presence of rotating mechanism 323, and horizontal extension mechanism 322 can be with Rotated centered on vertical telescoping mechanism 321, described end of the horizontal extension mechanism 322 away from vertical telescoping mechanism 321 is set There is hold assembly 3221, the hold assembly 3221 is used to clamp tapping protection pipe.

The tapping protection pipe of the present embodiment is installed on protection pipe regulation and control unit 320, and vertical telescoping mechanism 321 passes through flexible The vertical height of tapping protection pipe can be regulated and controled, horizontal extension mechanism 322 can adjust the level of tapping protection pipe by flexible Position；And coordinate the rotation of rotating mechanism 323, tapping protection pipe can be regulated and controled the optional position to controlled range, from And tapping protection pipe is engaged with tapping hole 411.So as to realize the protection pipe regulation and control regulation and control tapping protection pipe of unit 320 vertical Direction or horizontal direction movement.

With reference to shown in Fig. 1, tapping protection pipe includes protection sleeve pipe 100 and connection sleeve pipe 200, described protection sleeve pipe 100 Internal diameter be more than the diameter of tapping hole 411, between having when the molten steel is flowed through protection sleeve pipe 100 between the inwall of protection sleeve pipe 100 Gap；Connection sleeve pipe 200 is used to be connected with tapping hole 411, and accommodating chamber 210, the accommodating chamber 210 are offered in connection sleeve pipe 200 Outside for being sleeved on tapping hole 411.Moreover, described accommodating chamber 210 is cylindrical cavity, the internal diameter of cylindrical cavity is big Internal diameter in cannula inlet port end 110.

The cannula inlet port end 110 of the protection sleeve pipe 100 of the present embodiment is connected with connection sleeve pipe 200, and constitutes going out for insertion Steel protection pipe, when connection sleeve pipe 200 is sleeved on into 411 outside of tapping hole, protection sleeve pipe 100 keeps coaxial with tapping hole 411, i.e., The axle center of protection sleeve pipe 100 is with the axle center of tapping hole 411 on same straight line.Open after tapping hole 411, molten steel is made in gravity Under, molten steel flow to protection sleeve pipe 100 by tapping hole 411 through connection sleeve pipe 200, and the internal diameter of protection sleeve pipe 100 is more than tapping hole 411 diameter, has gap when the molten steel is flowed through protection sleeve pipe 100 between the inwall of protection sleeve pipe 100 so that molten steel not with guarantor The inwall contact of protecting pipe 100, or inwall of the molten steel not exclusively with protection sleeve pipe 100 are contacted, so as to reduce molten steel to guarantor Washing away for the inwall of protecting pipe 100, improves service life.

Under the guiding of prior art inertial thinking, often directed thinking thinks existing technical staff, in the mistake of tapping It need not be protected in journey, even if having paid close attention to the protection in tapping process, it is also difficult to imagine using tapping protection pipe pair Molten steel in tapping process is protected, thus the utility model proposes tapping process in tapping protection pipe broken existing The technology prejudice of technology, with significant progressive.Even so, even if there is technical staff to pay close attention to the molten steel in tapping process Protection, then in order to improve the protecting effect in tapping process, prevent molten steel and air contact, existing technical staff is often Protection sleeve pipe 100 and tapping hole 411 are set to it is isometrical, so as to avoid the molten steel and protection sleeve pipe 100 in protection sleeve pipe 100 Space is produced between inwall, it is existing in order to obtain preferable protecting effect because there is space to make molten steel and air contact Protection sleeve pipe 100 and tapping hole 411 are necessarily set to isometrical by the technical staff of technology；But, so design is but substantially reduced The service life of protection sleeve pipe 100, preferable protecting effect is not reached not only, production cost is added on the contrary.The present embodiment The internal diameter for proposing protection sleeve pipe 100 be more than the diameter of tapping hole 411, when the molten steel is flowed through protection sleeve pipe 100 and protective case There is gap between the inwall of pipe 100, during tapping, it is to avoid molten steel directly washing away to protection sleeve pipe 100 inwall, from And substantially increase service life.At the same time, the space of molten steel and the inwall of protection sleeve pipe 100 forms good insulation space, It has good heat insulation effect, reduces the heat loss of molten steel.

Protection sleeve pipe 100 is conical pipe, and the internal diameter at the cannula inlet port end 110 of protection sleeve pipe 100 is less than cannula exit end 120 internal diameter (as shown in Figure 1), and the diameter of the internal diameter more than tapping hole 411 at cannula inlet port end 110；The present embodiment middle sleeve The internal diameter of arrival end 110 is the diameter of 1.5 times of tapping hole 411；The internal diameter at cannula exit end 120 is 3.0 times of tapping hole 411 Diameter.The internal diameter that the internal diameter at cannula inlet port end 110 is less than cannula exit end 120 effectively limit cross-ventilation, prevent sky Gas violent flow in protection sleeve pipe 100, tapping protection pipe sets up relative closed molten steel channel, effectively limit molten steel table The gas flowing in face, so that the pernicious gas limited in air spreads into molten steel, greatly reduce molten steel has to nitrogen hydrogen etc. The adsorbance of evil gas, and in the case of cross-ventilation is less, only the air in protection sleeve pipe 100 can't be to molten steel Quality produces influence.

At the same time, steel-making is in tapping process because molten steel exposes in atmosphere, and molten steel causes because of heat radiation, heat loss through convection Molten steel produces larger temperature drop during tapping, by taking electric furnace as an example, molten steel temperature drop is even up to during electric furnace steel tapping 50-80℃.The design of protection sleeve pipe 100 limits convection heat transfer' heat-transfer by convection of the air in molten steel surface in the present embodiment, reduces molten steel Dropped in the temperature of protection sleeve pipe 100.Molten steel by tapping hole 411 after being flowed out, due to the reduction of molten steel pressure itself so that molten steel It can be spread when flowing in ladle tank 330, that is, flow to the diameter of molten steel when in ladle tank 330 more than steel at tapping hole 411 The diameter of stream, the internal diameter at cannula inlet port end 110 can also keep molten steel flowing to simultaneously less than the internal diameter at cannula exit end 120 Space still is kept with the inwall of protection sleeve pipe 100 during bottom, so as to improve the service life of protection sleeve pipe 100, tool is formed again There is the space heat-insulation layer of good heat preservation effect, therefore with significant progressive.

Embodiment 2

The substance be the same as Example 1 of the present embodiment, difference is：The tube wall of protection sleeve pipe 100 from outside to inside according to Secondary setting shell 104, thermal insulation layer 102 and refractory masses 101 (as shown in Figure 2)；Described shell 104 is with higher machinery The steel construction of intensity is made, and described thermal insulation layer 102 is made up of heat-barrier material, and wherein heat-barrier material is glass fibre, asbestos, rock Cotton or silicate, or combinations of the above；The heat-barrier material of thermal insulation layer 102 can effectively limit molten steel in protection sleeve pipe 100 Heat to the external cooling of protection sleeve pipe 100, reduce the temperature loss in tapping process, and then can reduce tapping temperature, Save steel-making energy consumption.Described refractory masses 101 are arranged at the inwall of protection sleeve pipe 100, and refractory masses 101 have fire proofed wood Material is made, and can effectively resist washing away and corroding for molten steel.Described thermal insulation layer 102 is arranged at shell 104 and refractory masses Between 101.

Embodiment 3

The substance be the same as Example 2 of the present embodiment, difference is：Also set up between shell 104 and thermal insulation layer 102 Have and space is provided between void layer 103 (as shown in Figure 2), i.e. shell 104 and thermal insulation layer 102, and constitute void layer 103, should Void layer 103 can be vacuum condition, can also will be filled with the void layer 103 of arbitrary gas, the void layer 103 of the present embodiment In filled with air.Void layer 103 between shell 104 and thermal insulation layer 102 changes the heat transfer condition of protection sleeve pipe 100, so that Limiting molten steel in protection sleeve pipe 100, to external heat transfer, reduces the thermal loss in molten steel tapping process.

Embodiment 4

The substance be the same as Example 1 of the present embodiment, difference is：The connection bottom that connection sleeve pipe 200 passes through bottom Plate 220 is connected with cannula inlet port end 110, and through hole is provided with connecting bottom board 220, and the through hole is corresponding with cannula inlet port end 110 to be set Put, the accommodating chamber 210 of connection sleeve pipe 200 passes through above-mentioned through hole and the insertion of protection sleeve pipe 100 so that molten steel can be by tapping hole 411 It is flow to through accommodating chamber 210 in protection sleeve pipe 100, and protective effect is realized to molten steel.Pockets are provided with connecting bottom board 220 221, the pockets 221 are arranged at the circumferential edges position (as shown in Figure 3) of connecting bottom board 220.

Electric furnace corrodes supporting plate, generally going out on supporting plate top before tapping to prevent molten steel from flowing directly on supporting plate Filling filler inside 411 pipes of steel mouthful, these fillers are taken out between supporting plate and molten steel on the pipeline from tapping hole 411 Go out supporting plate, open after tapping hole 411 under molten steel Action of Gravity Field, filler can be extruded splash by tapping hole 411 and gone out by molten steel, spray The filler splashed is eventually fallen into ladle tank 330, is then melted in high-temperature molten steel.But, it is a large amount of due to containing in filler Impurity, fusing into the filler of high-temperature molten steel will cause harmful element to enter in molten steel, be degrading the performance of steel, be the outer essence of follow-up stove Refining brings pressure；Therefore, for the steelmaking process of electric furnace, the tapping protection pipe of electric furnace steel making tapping is devised, it is connected Pockets 221 are provided with bottom plate 220, the pockets 221 are arranged at the circumferential edges position of connecting bottom board 220, filler When the splash in the pipeline of tapping hole 411 goes out, its spray regime is radial, and filler will be injected in the appearance of connecting bottom board 220 Receive in groove 221 so that partial filler will not fall into ladle tank 330, reduces influence of the filler to steel quality, improves The smelting quality of molten steel, reduces smelting cost, with significant progressive.

Embodiment 5

The substance be the same as Example 4 of the present embodiment, difference is：The medial surface of pockets 221 inclines for groove Inclined-plane 222, the angle of inclination in the groove slant face 222 is 45 °, and groove slant face 222 causes in filler along radial spray When penetrating, filler is more easy to fall into pockets 221, further reduces filler and falls into ladle, and then improves steel The smelting quality of liquid, reduces smelting cost.

Embodiment 6

The substance be the same as Example 1 of the present embodiment, difference is：The top of connection sleeve pipe 200 is provided with assembling Component 230, described mounting structure 230 includes boot segment 231 and vertical section 232 (as shown in Figure 4), and boot segment 231 has one Fixed taper, the i.e. internal diameter at the top of boot segment 231 is more than the internal diameter of the bottom of boot segment 231, and the top internal diameter of boot segment 231 is larger, So that the top of connection sleeve pipe 200 is easier to coordinate with tapping hole 411, after the top of boot segment 231 coordinates with tapping hole 411, Continue to move up tapping protection pipe, tapping hole 411 can be assemblied in vertical section 232 in the presence of boot segment 231；Therefore boot segment 231 are used to guide connection sleeve pipe 200 to be engaged with tapping hole 411, and make the location fit of tapping hole 411 in vertical section 232.It is described The bottom of vertical section 232 be provided with limiting plate 240, limiting plate 240 is provided centrally with limiting through hole 241, the limiting through hole 241 Internal diameter is between the internal diameter and external diameter of tapping hole 411, i.e. the internal diameter of tapping hole 411<The internal diameter of limiting through hole 241<Tapping hole 411 external diameter；So that limiting plate 240 can limit the limit that moves down of tapping hole 411, normal tapping is can guarantee that again.

Tapping hole 411 is engaged with the limiting through hole 241 at the center of limiting plate 240, and molten steel is flowed out by tapping hole 411, molten steel Inflow protection sleeve pipe 100 through the center of limiting plate 240；The limiting plate 240 moves down limit for tapping hole 411, it is to avoid in assembling During tapping hole 411 load connection sleeve pipe 200 depth it is too deep, while improving efficiency of assembling, it is to avoid connection sleeve pipe 200 with the damaged in collision of tapping hole 411.

At the same time, during molten steel is tapped, molten steel flows to protection sleeve pipe 100 by tapping hole 411, due to molten steel There is gap between the accommodating chamber 210 in protection sleeve pipe 100 and connection sleeve pipe 200, molten steel surface can drive air body to flow, And cause gas to occur convection current in molten steel surface.The limiting plate 240 is spacing while to the accommodating chamber in connection sleeve pipe 200 210 spaces are split, and the space of accommodating chamber 210 is divided into 2 independent spaces, limit gas in molten steel surface generation pair Flow, it is suppressed that gas violent flow in protection sleeve pipe 100, and then limit the pernicious gas in air and spread into molten steel； At the same time, convection heat transfer' heat-transfer by convection of the air in molten steel surface is also limit, the temperature for reducing molten steel in protection sleeve pipe 100 drops, drop Temperature drop in low tapping process.

Embodiment 7

The substance be the same as Example 1 of the present embodiment, difference is：Steel ladle cover 331 is provided with ladle tank 330, Molten steel introducing port 332 is provided with the steel ladle cover 331, the molten steel introducing port 332 is provided with entrance closing cover 333 with matching (as shown in Figure 6 and Figure 7), described molten steel introducing port 332 is engaged with tapping protection pipe.During tapping, first open into Mouth capping 333, then tapping protection pipe is inserted in ladle tank 330, when realizing that molten steel flow to ladle tank 330 by tapping hole 411 again Whole process is protected, it is to avoid molten steel in ladle tank 330 with air contact, and then reduce the impurity in molten steel.And avoid In tapping process, molten steel outwards radiates, reduce the thermal loss in tapping process.

Entrance closing cover 333 is used for after tapping terminates, and molten steel introducing port 332 is closed, so as to prevent molten steel from being imported by molten steel Mouthfuls 332 outwards radiatings, above-mentioned entrance closing cover 333 is connected by hinge 334 and the rotation of steel ladle cover 331, and entrance closing cover 333 can be with Hinge 334 is axis rotation.

Embodiment 8

A kind of electric furnace steel-making system for protecting tapping of the present utility model, including electric furnace body 400 and molten steel transhipment dress Put (as shown in Figure 8), tapping hole 411 is provided with described electric furnace body 400, described molten steel transporter is above-mentioned steel Spinal Cord Oedema device, molten steel transporter is used to molten steel being transported to next process.

Electric furnace body 400 includes electric furnace steel tapping case 410, eccentric furnace bottom 420 and tilting equipment 430, described electric furnace steel tapping Tapping hole 411 is provided with case 410, tilting equipment 430 is driven during tapping, electric furnace body 400 is in eccentric furnace bottom 420 Enter line tilt under effect, and drive electric furnace steel tapping case 410 to enter line tilt simultaneously so that molten steel flow to electric furnace by electric furnace body 400 In steel box 410, the position of the then protection pipe regulation and control regulation and control tapping protection pipe of unit 320 so that tapping protection pipe and tapping hole 411 centerings, then drive vertical telescoping mechanism 321 so that the connection sleeve pipe 200 of tapping protection pipe is engaged with tapping hole 411；And The supporting plate of tapping hole 411 is opened afterwards, and molten steel is flowed in tapping protection pipe by tapping hole 411, and in the protection of tapping protection pipe Effect is lower to be tapped.By tapping, protection pipe is engaged with tapping hole 411, and it is logical that tapping protection pipe sets up relative closed molten steel Road, molten steel is flowed into tapping protection pipe by tapping hole 411, be effectively limit the gas flowing of molten steel surface, is limited air In pernicious gas spread into molten steel, reduce air in molten steel to the adsorbance of the pernicious gases such as nitrogen hydrogen, improve the matter of steel Amount；And reduce the thermal loss of molten steel.On this basis, electric furnace production efficiency is improved, is shortened the heat, equipment profit is improved With rate；And due to reduction tapping temperature, so as to reduce erosion degree of the molten steel to electric furnace, extending electric furnace system equipment makes Use the life-span.

Embodiment 9

The substance be the same as Example 8 of the present embodiment, difference is：Electric furnace steel tapping is provided with electric furnace body 400 Case 410, the bottom of electric furnace steel tapping case 410 is provided with tapping hole 411, and the angle of described tapping hole 411 and vertical direction is ε (as shown in Figure 9), ε is electric furnace steel tapping inclination angle, and ε is the tapping angle in normal tapping process, and ε scope is 10-15 °, this reality Apply preferably 12 ° of example.

Above-mentioned hold assembly 3221 is installed on the end of horizontal extension mechanism 322, the energy of hold assembly 3221 by rotating shaft Relative to the skew or deflection of the in the vertical direction low-angle of horizontal extension mechanism 322, so that the band of hold assembly 3221 The skew or deflection of dynamic tapping protection pipe in the vertical direction adaptability.The skew of adaptability causes tapping protection pipe and tapping After mouth 411 coordinates, tapping protection pipe and tapping hole 411 are coaxial, that is, the axis for protection pipe of tapping and the axis of tapping hole 411 are same On straight line.

During tapping, tilting equipment 430 is driven during tapping, electric furnace body 400 is in eccentric furnace bottom 420 Enter line tilt under effect, and drive electric furnace steel tapping case 410 to enter line tilt simultaneously so that molten steel flow to electric furnace by electric furnace body 400 In steel box 410, when the inclination angle of electric furnace body 400 reaches ε=12 °.The protection pipe regulation and control regulation and control tapping protection pipe of unit 320 Position, the holding for protection pipe of tapping is vertical (as shown in Figure 10), and molten steel is flowed into after tapping protection pipe by tapping hole 411, in gravity In the presence of vertical flowed out by tapping protection pipe.And tapping protection pipe and tapping hole 411 are coaxial, the protective case for protection pipe of tapping The internal diameter of pipe 100 be more than tapping hole 411 diameter, molten steel flow through vertically tapping protection pipe when, molten steel not with protection sleeve pipe 100 Inwall is contacted, or inwall of the molten steel not exclusively with protection sleeve pipe 100 is contacted, so as to reduce molten steel in protection sleeve pipe 100 Wall washes away.

Embodiment 10

A kind of molten steel charging method of molten steel transporter for protecting tapping of the present embodiment, electric furnace is before tapping by steel Spinal Cord Oedema device is moved to the bottom of tapping hole 411, and the position of the regulation and control tapping protection pipe of unit 320 is regulated and controled by protection pipe, and makes The protection pipe that must tap is engaged with tapping hole 411, and molten steel is flowed into tapping protection pipe by tapping hole 411 during tapping, And flowed into by tapping protection pipe in ladle tank 330.Tapping protection pipe is protected during tapping to molten steel, is tapped The internal diameter of the protection sleeve pipe 100 of protection pipe is more than the diameter of tapping hole 411, when molten steel flows through protection sleeve pipe 100 and protection sleeve pipe There is gap, inwall of the molten steel not with protection sleeve pipe 100 contact between 100 inwall, or molten steel is not exclusively and protection sleeve pipe 100 inwall contact, reduces molten steel and the inwall of protection sleeve pipe 100 is washed away, improve service life.And tapping protection pipe Relative closed molten steel channel is set up, the gas flowing of molten steel surface is effectively limit, so as to limit harmful in air Gas spreads into molten steel, greatly reduces adsorbance of the molten steel to pernicious gases such as nitrogen hydrogen, improves the quality of steel.

A kind of molten steel charging method of molten steel transporter for protecting tapping of the present embodiment, specific step is as follows：

S1, the baking of ladle tank 330 are finished, and cover steel ladle cover 331 on ladle tank 330, before electric furnace smelting is completed 2min, the bottom of tapping hole 411 is moved to by molten steel transporter；

S2, smelting molten steel drive tilting equipment 430 again when completing, and electric furnace body 400 is sent out in the presence of eccentric furnace bottom 420 It is raw to tilt, when inclination angle reaches tapping inclination angle ε=12 °, unit 320 is regulated and controled by protection pipe and regulates and controls the position of protection pipe of tapping Put, tapping protection pipe and the center line of tapping hole 411 is alignd, then drive vertical telescoping mechanism 321 to cause in tapping protection pipe The connection sleeve pipe 200 in portion is engaged with tapping hole 411, and tapping protection pipe and tapping hole 411 are coaxial, and tapping protection pipe keeps perpendicular Straight state；

S3, the supporting plate of opening tapping hole 411 start tapping, and molten steel flows to tapping protection pipe by tapping hole 411, in tapping Accommodating chamber 210 of the molten steel through connection sleeve pipe 200 is flow in protection sleeve pipe 100 in protection pipe, and steel is being flowed to by protection sleeve pipe 100 In bag tank 330, molten steel is lasting to flow to ladle tank 330 by tapping hole 411 through protection pipe of tapping；And keep electric furnace body 400 Inclination angle until tapping complete；

S4, when molten steel tapping 96% when, close tapping hole 411 supporting plate, electric furnace body 400 with 3 °/s return inclines to horizontal position Put, flow into ladle from tapping hole 411 to avoid or reduce clinker, and then realize slag free tapping；Then further lifting tapping is protected The height of pillar so that tapping protection pipe is removed by ladle tank 330 completely, turns off the entrance closing cover of molten steel introducing port 332 333；And molten steel is transported to subsequent processing by molten steel transporter.

Molten steel is flowed into tapping protection pipe by tapping hole 411 during the utility model is tapped, and tapping protection pipe is going out Molten steel is protected during steel, reduces adsorbance of the molten steel to pernicious gases such as nitrogen hydrogen in air；And can be effective Ground reduces the temperature loss in tapping process, reduces the energy consumption of steel-making.

The supporting plate of tapping hole 411 is opened in the prior art during electric furnace steel tapping, when the inclination angle of electric furnace body 400 reaches 3-5 ° to carry out Tapping, the present embodiment tapping inclination angle removes supporting plate when reaching 12 ° and starts tapping again, so as to be formed at the top of tapping hole 411 Larger ferrostatic pressure, and cause just to producing larger pressure to the filler inside tapping hole 411, and then can be in tapping Filler inside initial stage tapping hole 411 can produce larger jet angle and be injected in pockets 221, reduce the filler of tapping hole 411 Influence to steel quality, and tapping inclination angle removes supporting plate when reaching 12 ° and starts tapping again, it is possible to reduce in tapping process Erosion degree of the molten steel to protection pipe of tapping.

The utility model is described in detail above in conjunction with specific exemplary embodiment.It is understood, however, that can be Various modifications and variations are carried out in the case of not departing from the scope of the present utility model being defined by the following claims.Detailed retouches State should be to be considered only as with accompanying drawing it is illustrative and not restrictive, if there is any such modifications and variations, then They are fallen within the range of the utility model described here.In addition, background technology is intended to illustrate grinding for this technology It was found that shape and meaning, it is no intended to limit the utility model or the application and application field of the present utility model.

More specifically, although exemplary embodiment of the present utility model has been described herein, the utility model is simultaneously These embodiments are not limited to, but are repaiied including the process that those skilled in the art can be appreciated that according to detailed description above Change, omit, any and whole embodiments of (such as between each embodiment) combination, adaptive change and/or replacement.Right It is required that in restriction can widely be explained according to the language used in claim, and be not limited in foregoing detailed description In or the example that describes during this application is implemented, these examples are considered as nonexcludability.For example, in the utility model In, term " preferably " not exclusively, here it means that " preferably, but be not restricted to that ".It is in office where method or Any step enumerated in process claims can perform and be not limited to the order proposed in claim in any order. Therefore, scope of the present utility model should be determined only by appended claims and its legal equivalents, rather than be given by above The explanation and example that go out is determined.

Claims (10)

1. a kind of molten steel transporter for protecting tapping, it is characterised in that：Including buggy ladle (300) and tapping protection pipe, institute The buggy ladle (300) stated includes protection pipe regulation and control unit (320) and ladle tank (330)；Above-mentioned tapping protection pipe is installed on guarantor On pillar regulation and control unit (320), protection pipe regulation and control unit (320) is used to regulate and control tapping protection pipe in vertical direction or level side To movement；Described tapping protection pipe includes protection sleeve pipe (100) and connection sleeve pipe (200), and described connection sleeve pipe (200) is used It is connected in tapping hole (411)；The cannula inlet port end (110) of described protection sleeve pipe (100) is connected with connection sleeve pipe (200), And the tapping protection pipe of insertion is constituted, the internal diameter of described protection sleeve pipe (100) is more than the diameter of tapping hole (411), steel flow Through having gap when protection sleeve pipe (100) between the inwall of protection sleeve pipe (100).

2. a kind of molten steel transporter for protecting tapping according to claim 1, it is characterised in that：Described protection pipe Regulating and controlling unit (320) includes vertical telescoping mechanism (321), horizontal extension mechanism (322) and rotating mechanism (323), and described is perpendicular Straight telescoping mechanism (321) is fixedly installed on buggy ladle (300), and horizontal extension mechanism (322) is rotated by rotating mechanism (323) It is installed on the top of vertical telescoping mechanism (321).

3. a kind of molten steel transporter for protecting tapping according to claim 1, it is characterised in that：Protection sleeve pipe (100) it is conical pipe, and the internal diameter at the cannula inlet port end (110) of protection sleeve pipe (100) is less than the interior of cannula exit end (120) Footpath, and the diameter of the internal diameter more than tapping hole (411) of cannula inlet port end (110).

4. a kind of molten steel transporter for protecting tapping according to claim 1, it is characterised in that：Described protective case The tube wall of pipe (100) sets gradually shell (104), thermal insulation layer (102) and refractory masses (101) from outside to inside.

5. a kind of molten steel transporter for protecting tapping according to claim 3, it is characterised in that：Connection sleeve pipe (200) accommodating chamber (210) is offered in, accommodating chamber (210) is used for the outside for being sleeved on tapping hole (411).

6. a kind of molten steel transporter for protecting tapping according to claim 5, it is characterised in that：Described accommodating chamber (210) internal diameter is more than the internal diameter of cannula inlet port end (110).

7. a kind of molten steel transporter for protecting tapping according to claim 6, it is characterised in that：Connection sleeve pipe (200) it is connected by the connecting bottom board (220) of bottom with cannula inlet port end (110), receiving is provided with the connecting bottom board (220) Groove (221).

8. a kind of according to claim any one of 1-7 protects the molten steel transporter of tapping, it is characterised in that：Connection Mounting structure (230) is provided with the top of sleeve pipe (200), described mounting structure (230) includes boot segment (231) and vertical section (232), boot segment (231) is used to guide connection sleeve pipe (200) to be engaged with tapping hole (411), and positions tapping hole (411) It is matched with vertical section (232).

9. a kind of electric furnace steel-making system for protecting tapping, it is characterised in that：Including electric furnace body (400) and molten steel transhipment dress Put, tapping hole (411) is provided with described electric furnace body (400), described molten steel transporter is the claims 1-8 The molten steel transporter of any one, molten steel transporter is used to molten steel being transported to next process.

10. a kind of electric furnace steel-making system for protecting tapping according to claim 9, it is characterised in that：Electric furnace body (400) electric furnace steel tapping case (410) is provided with, the bottom of electric furnace steel tapping case (410) is provided with tapping hole (411), and described goes out The angle of steel mouthful (411) and vertical direction is ε, and ε is electric furnace steel tapping inclination angle.