CN212588545U

CN212588545U - Novel graphite electrode of electric arc furnace

Info

Publication number: CN212588545U
Application number: CN202021554981.1U
Authority: CN
Inventors: 周锋; 周治呈; 周书梅
Original assignee: Handan Lichuan Graphite Technology Co Ltd
Current assignee: Handan Lichuan Graphite Technology Co Ltd
Priority date: 2020-07-31
Filing date: 2020-07-31
Publication date: 2021-02-23
Anticipated expiration: 2030-07-31

Abstract

The utility model discloses a novel electric arc furnace graphite electrode belongs to the graphite electrode field, including mount pad, insulating layer, electrode polar body, heat dissipation channel, induction-pipe, outer end venthole, disturbance gas pocket, air chamber, inlet port, intake pipe, outlet duct. The utility model discloses an utilize external power to drive the blast pipe and rotate, when the blast pipe rotates, the outer end venthole of blast pipe left end carries out jet-propelled cooling to the internal heat dissipation channel inner of electrode utmost point, then spun inert gas passes through heat dissipation channel and moves right, the outside blowout inert gas of disturbance gas pocket simultaneously, and then blow the disturbance to the flow by outer end venthole exhaust inert gas, and then increase the contact of the heat dissipation channel in inert gas and the graphite electrode, and then reinforcing radiating effect.

Description

Novel graphite electrode of electric arc furnace

Technical Field

The utility model relates to a graphite electrode field, especially a novel electric arc furnace graphite electrode.

Background

Graphite electrode, mainly use petroleum coke, needle coke as raw materials, coal pitch is as the anchoring agent, through calcining, batching, kneading, die mould, roasting, graphitization, machine tooling and make into, release the electric energy in the form of electric arc in the electric arc furnace and heat the conductor that melts to the furnace charge, according to its quality index height, can divide into ordinary power (YB/T4088), high power (YB/T4089) and ultrahigh power (YB/T4090), in the electric furnace steelmaking production, graphite electrode is consumed in the smelting process in succession, electrode consumption mainly relates to three aspects: firstly, the tip arcing temperature reaches 3000 ℃, so that high-temperature sublimation is caused; secondly, the side surface of the graphite electrode is oxidized and consumed with air; and thirdly, mechanical loss. Wherein the side oxidation consumption accounts for 50-70% of the total consumption.

Graphite electrode is because high temperature is heated easily in the electric arc furnace at the during operation, and then graphite electrode after the heating can be with higher speed oxidation and sublimation, current often cools down through the mode that lets in inert gas in the graphite electrode, but the mode that directly lets in is often taken to the inside inert gas that lets in of graphite electrode to the current, inert gas is smooth flow in graphite electrode, and then cause inert gas can't fully contact with graphite electrode inside, and then reduced graphite electrode's cooling effect, consequently need a novel electric arc furnace graphite electrode who solves above-mentioned problem.

Disclosure of Invention

The utility model aims at solving the problem provided in the background art and designing a novel graphite electrode of an electric arc furnace.

The technical scheme of the utility model is that, the novel graphite electrode of the electric arc furnace comprises a mounting seat, a heat insulation layer, an electrode body, a heat dissipation channel, an air feed pipe, an outer end air outlet hole, a disturbance air hole, an air chamber, an air inlet hole, an air inlet pipe and an air outlet pipe, wherein the heat insulation layer is fixedly arranged on the left surface of the mounting seat, the electrode body is fixedly arranged on the left surface of the heat insulation layer, the heat dissipation channel is transversely arranged in the electrode body, the air feed pipe is positioned in the heat dissipation channel and can be rotatably inserted in the center of the heat insulation layer and the mounting seat, the outer end air outlet hole is arranged on the left end surface of the air feed pipe, a plurality of the disturbance air holes are transversely distributed on the side surface of the air feed pipe, the air chamber is fixedly arranged on the right surface of the mounting seat and the air feed pipe can rotatably pass through the middle part of the, the air outlet pipe is embedded in the electrode body and penetrates through the heat insulation layer and the mounting seat to penetrate out to the right.

Furthermore, a bearing is arranged on the mounting seat, and the bearing is embedded in the middle of the mounting seat and sleeved outside the air supply pipe.

Furthermore, the right end of the air supply pipe is closed, a power rod is arranged at the right end of the air supply pipe, and the power rod is fixedly installed at the right end of the air supply pipe.

Furthermore, an anti-oxidation layer is arranged on the electrode body, and the anti-oxidation layer is fixedly sleeved on the side surface of the electrode body.

Furthermore, the electrode body is of a cylindrical structure, and the left end of the electrode body is of a conical structure.

Has the advantages that:

the external power is utilized to drive the air supply pipe to rotate, when the air supply pipe rotates, the outer end air outlet hole at the left end of the air supply pipe performs air injection cooling on the inner end of the heat dissipation channel in the electrode body, then the sprayed inert gas moves rightwards through the heat dissipation channel, and meanwhile, the disturbance air hole sprays the inert gas outwards, so that the flow of the inert gas discharged from the outer end air outlet hole is blown and disturbed, the contact between the inert gas and the heat dissipation channel in the graphite electrode is increased, the heat dissipation effect is further enhanced, and the problems that the heat exchange between the inert gas and the graphite electrode is small, and the heat dissipation efficiency is further reduced due to the fact that the disturbance is small when the inert gas flows during heat dissipation of the graphite;

the air chamber is sleeved at the right end of the air supply pipe, so that when the air supply pipe rotates under the external force when the air inlet pipe is used for air inlet, inert gas can still enter the air inlet hole in the air supply pipe through the air chamber, and the rotary air supply of the air supply pipe is realized;

the consumption of the graphite electrode body due to oxidation is reduced by the anti-oxidation layer on the side surface of the electrode body.

Drawings

FIG. 1 is a schematic structural view of a graphite electrode of the novel electric arc furnace of the present invention;

FIG. 2 is a schematic side sectional view of the air chamber portion of the present invention;

fig. 3 is a schematic structural diagram of the novel graphite electrode of the electric arc furnace installed in the state of the electric arc furnace body.

In the figure, 1, a mounting seat; 2. a thermal insulation layer; 3. an electrode body; 4. a heat dissipation channel; 5. an air supply pipe; 6. an outer end air outlet hole; 7. disturbing the air holes; 8. an air chamber; 9. an air inlet; 10. an air inlet pipe; 11. an air outlet pipe; 12. a bearing; 13. a power rod; 14. an anti-oxidation layer; 15. an electric arc furnace body.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper/lower end", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "mounted," "disposed/sleeved," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-3, the present invention provides a technical solution: a novel graphite electrode of an electric arc furnace comprises a mounting seat 1, a heat insulation layer 2, an electrode body 3, a heat dissipation channel 4, an air feed pipe 5, an outer end air outlet hole 6, a disturbance air hole 7, an air chamber 8, an air inlet hole 9, an air inlet pipe 10 and an air outlet pipe 11, wherein the heat insulation layer 2 is fixedly arranged on the left surface of the mounting seat 1, the electrode body 3 is fixedly arranged on the left surface of the heat insulation layer 2, the heat dissipation channel 4 is transversely arranged in the electrode body 3, the air feed pipe 5 is positioned in the heat dissipation channel 4 and can be rotatably inserted in the center of the heat insulation layer 2 and the mounting seat 1, the outer end air outlet hole 6 is arranged on the left end surface of the air feed pipe 5, a plurality of disturbance air holes 7 are transversely arranged on the side surface of the air feed pipe 5, the air chamber 8 is fixedly arranged on the right surface of the mounting seat 1, the air feed pipe 5 passes through the rotatable middle part of the air, the air outlet pipe 11 is embedded in the electrode body 3 and penetrates through the heat insulation layer 2 and the mounting seat 1 to penetrate out rightwards, wherein the heat insulation layer 2 is of a plate-shaped structure of heat insulation materials, and the electrode body 3 is made of graphite materials special for graphite electrodes.

The utility model discloses in, when this graphite electrode installation, the electrode utmost point body 3 passes electric arc furnace body 15 and then installs on electric arc furnace body 15, and wherein, electric arc furnace body 15 is the electric arc furnace.

The utility model discloses in, be equipped with bearing 12 on the mount pad 1, bearing 12 inlays the dress and installs in the mount pad 1 middle part and suit outside 5 blast pipes, bears blast pipes 5 through bearing 12, and then bearing 12 plays the effect that reduces the rotational friction between blast pipes 5 and the mount pad 1 when 5 rotations of blast pipes.

The utility model discloses in, 5 right-hand members of blast pipe are airtight, and 5 right-hand members of blast pipe are equipped with power rod 13, and power rod 13 fixed mounting is in 5 right-hand members of blast pipe, through connecting power rod 13 on external power supply such as motor output shaft, and then drives power rod 13 through external power supply and rotate.

The utility model discloses in, be equipped with oxidation resisting layer 14 on the electrode utmost point body 3, oxidation resisting layer 14 is fixed suit on the 3 side surfaces of the electrode utmost point body, and wherein, oxidation resisting layer is anti-oxidant material, utilizes oxidation resisting layer to carry out the cladding to the electrode utmost point body 3, and then reduces the oxidation of the side of the electrode utmost point body 3, increases the life of this graphite electrode.

The utility model discloses in, electrode utmost point body 3 is the toper structure for cylindrical structure and its left end, and then is convenient for produce point discharge at 3 left ends during operation of electrode utmost point body, and then utilizes electric arc to heat the interior material of electric arc furnace body 15.

In this embodiment:

during operation, at first, install this graphite electrode on electric arc furnace body 1, then drive the induction pipe 5 through utilizing external power to rotate, when induction pipe 5 rotates, send into inert gas in air chamber 8 through intake pipe 10, and then inert gas enters into induction pipe 5 through inlet port 9, and then the outer end venthole 6 of induction pipe 5 left end carries out jet-propelled cooling to heat dissipation channel 4 inner in the electrode body 3, then spun inert gas moves right through heat dissipation channel 4, and simultaneously disturbance gas 7 outwards spouts inert gas, along with the rotation of induction pipe 5, and then the inert gas that blows off through disturbance gas hole 7 blows the disturbance to the inert gas's that is discharged by outer end venthole 6 flow, and then increase inert gas and the contact of heat dissipation channel 4 in the graphite electrode, and then strengthen the radiating effect.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation. The use of the phrase "comprising one of the elements does not exclude the presence of other like elements in the process, method, article, or apparatus that comprises the element.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A novel graphite electrode of an electric arc furnace comprises a mounting seat (1), a heat insulation layer (2), an electrode pole body (3), a heat dissipation channel (4), an air feed pipe (5), an outer end air outlet hole (6), a disturbance air hole (7), an air chamber (8), an air inlet hole (9), an air inlet pipe (10) and an air outlet pipe (11), and is characterized in that the heat insulation layer (2) is fixedly mounted on the left surface of the mounting seat (1), the electrode pole body (3) is fixedly mounted on the left surface of the heat insulation layer (2), the heat dissipation channel (4) is transversely arranged in the electrode pole body (3), the air feed pipe (5) is positioned in the heat dissipation channel (4) and can be rotatably inserted in the centers of the heat insulation layer (2) and the mounting seat (1), the outer end air outlet hole (6) is arranged on the left end surface of the air feed pipe (5), and the disturbance air holes (7) are transversely distributed on the side, air chamber (8) fixed mounting is on mount pad (1) right surface and air feed pipe (5) are rotatable to pass from its middle part, inlet port (9) are opened in air feed pipe (5) right side and are located air chamber (8), fixed cartridge in air chamber (8) lower part and the inside intercommunication of air chamber (8) of intake pipe (10), outlet duct (11) are inlayed and are adorned in electrode body (3) and pass insulating layer (2) and mount pad (1) and wear out right.

2. The novel graphite electrode for electric arc furnaces as claimed in claim 1, wherein the mounting base (1) is provided with a bearing (12), and the bearing (12) is embedded in the middle of the mounting base (1) and sleeved outside the gas supply pipe (5).

3. The graphite electrode for the electric arc furnace as claimed in claim 1, wherein the right end of the air feed pipe (5) is sealed, a power rod (13) is arranged at the right end of the air feed pipe (5), and the power rod (13) is fixedly arranged at the right end of the air feed pipe (5).

4. The graphite electrode for the electric arc furnace as claimed in claim 1, wherein an antioxidation layer (14) is arranged on the electrode body (3), and the antioxidation layer (14) is fixedly sleeved on the side surface of the electrode body (3).

5. The new electric arc furnace graphite electrode as claimed in claim 1, characterized in that the electrode body (3) is of cylindrical configuration and its left end is of conical configuration.