CN204694048U - A kind of Water-cooled composite electrode for the production of mineral wool electric arc furnaces - Google Patents
A kind of Water-cooled composite electrode for the production of mineral wool electric arc furnaces Download PDFInfo
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- CN204694048U CN204694048U CN201520321187.5U CN201520321187U CN204694048U CN 204694048 U CN204694048 U CN 204694048U CN 201520321187 U CN201520321187 U CN 201520321187U CN 204694048 U CN204694048 U CN 204694048U
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- electric arc
- mineral wool
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Abstract
The utility model discloses a kind of Water-cooled composite electrode for the production of mineral wool electric arc furnaces, this electrode is made up of two sections, and epimere is metal water-cooling electrode, and hypomere is graphite electrode.Electrode is cylinder, and the epimere of electrode is connected by metal threaded joint with hypomere.Metal water-cooling electrode comprises inner and outer tubes two concentric pipes, and interior pipe is fixed on outer tube wall by uniform fulcrum; The bottom of outer tube is connected with metal threaded joint; The top of outer tube is respectively equipped with water supply connector and water out adapter; The outer tube upper end face of water cooled electrode is welded with sealing plate; The suspension ring for lifting electrode are welded with above sealing plate.The utility model structure is simple, and the life-span is long, can reduce the oxidation of graphite electrode, and this electrode is used for the mineral wool electric arc furnaces heating work environment of high temperature non-protective atmosphere, effectively can reduce the oxidation loss of graphite electrode in production in high temperature air.Both ensure that the electric conductivity of electrode, also reduce the cost of graphite electrode.
Description
Technical field
The utility model relates to the electrode of mineral wool production and application, particularly a kind of Water-cooled composite electrode for electric arc furnaces heating mineral wool raw material.
Background technology
Electrode is the important component part on electric arc furnaces, and it is heating element heater in stove, is connected with the outer short net of stove.For the electric arc furnaces of operating mine slag wool, heating element heater generally selects graphite electrode.Graphite electrode electric conductivity is good, and intensity is high but antioxygenic property is poor, more easily oxidation loss occurs under high temperature.When heating mineral wool raw material, because electrode is in high temperature air, electrode is not only in top loss, and also have oxidation loss along electrode shaft in stove, temperature is higher, and anodizing is more serious.Export license occupies certain ratio in mineral wool production cost; for this reason; once had researcher made electrode surface brush ORC way, longitudinally along electrode protective sleeve is installed or adopts the method for water-cooled to reduce anodizing, a kind of method after the utility model adopts in surface.
Do not find the Water-cooled composite electrode publication of producing for mineral wool electric arc furnaces at present.
Utility model content
The purpose of this utility model is the Water-cooled composite electrode providing a kind of operating mine slag wool electric arc furnaces, and its structure is simple, and the life-span is long, the oxidation of graphite electrode can be reduced, this electrode is used for the heating of mineral wool electric arc furnaces, both ensure that the electric conductivity of electrode, and has also reduced the cost of graphite electrode.
The purpose of this utility model is realized by following technical proposals.
As a kind of embodiment of the present utility model, a kind of Water-cooled composite electrode for the production of mineral wool electric arc furnaces, this electrode is made up of two sections, and epimere is metal water-cooling electrode, and hypomere is graphite electrode; Epimere is connected by metal threaded joint with hypomere;
Described metal water-cooling electrode comprises inner and outer tubes two concentric pipes, and interior pipe is fixed on outer tube wall by uniform fulcrum; The bottom of outer tube is connected with metal threaded joint; The top of outer tube is respectively equipped with water supply connector and water out adapter; The outer tube upper end face of water cooled electrode is welded with sealing plate; The suspension ring for lifting electrode are welded with above sealing plate.
Preferably, described interior pipe is inlet pipeline, and between interior pipe and outer tube, cavity is outlet pipeline; Water supply connector penetrates in interior pipe tube chamber, and water out adapter penetrates in the tube chamber between interior pipe and outer tube.
Preferably, described inner pipe end is cone mouth shape, and cone mouth end stretches into nipple inside, and tapering is consistent with nipple tapering, keeping parallelism.
Preferably, described outer tube upper outside wall is provided with for spacing becket.
Preferably, the external diameter of described epimere metal water-cooling electrode is identical with the external diameter of hypomere graphite electrode.
Preferably, described outer tube material is red copper or copper alloy.
Preferably, described sealing plate material is copper alloy plate.
Preferably, the convex thread of described nipple and the recessed screw thread of graphite electrode match.
Feature of the present utility model is:
1) this electrode be have employed epimere water cooled electrode made of copper and can be connected by nipple by deflection type graphite electrode with hypomere, the interior water inlet tube of the double-deck concentric metal column jecket of metal water-cooling electrode, the gap backwater between inner and outer pipes.This structure makes the graphite electrode exposed time in high-temperature oxydation district obviously shorten, and copper water-cooled section can not be oxidized at this temperature.
2) in slag electric arc furnaces, use the high safety of water-cooling metal electrode.Do not have the steel scrap in electric furnace arrangement for producing steel to collapse and expect the short circuit that causes, and then the electrode caused beats arch problem.Even if it touches slag liquid level accidentally, the general temperature that only can reduce contact position slag, forms the skim solidified shell of slag, which increases the resistance of slag herein in its contact position, prevents and beats arc damage electrode.
3) water-cooling metal electrode is communicated with cooling water to water inlet pipe, nipple, outlet pipe by snap joint, and the heat passing to water cooled electrode by various mode in stove relies on cooling water to cool and takes away, fully can meet need of production.
4) electrode is changed conveniently.Hollow thread blank area is the copper structure of convex thread that is a kind of and the recessed threaded engagement of graphite electrode, bears connection and electric action.
5) this electrode effectively can reduce graphite electrode and cruelly leaks the oxidization time on the top of the slag, reduces the consumption of graphite electrode, improves the service life of electrode, thus reduces the production cost of mineral wool.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
In figure: 1-water out adapter; 2-suspension ring; 3-sealing plate (copper coin); 4-water supply connector; 5-spacing ring; 6-outer tube; Pipe in 7-; The 8-strong point; 9-nipple; 10-graphite electrode.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the utility model is described in detail.
Shown in Figure 1, the utility model, for the production of the water cooled electrode of mineral wool electric arc furnaces, comprises two sections, and epimere is water-cooling metal electrode, and hypomere is for can consume graphite electrode 10, and epimere is connected by metal threaded joint 9 with hypomere; The convex thread of nipple 9 and the recessed screw thread of graphite electrode 10 match; Water-cooling metal electrode comprises the concentric pipe of interior pipe 7 and the mutual socket of outer tube 6 two, and the interior pipe 7 of pipe is fixed on outer tube 6 inwall by uniform three strong points 8, and interior pipe 7 is water inlet pipe; Nipple 9 is fixed on bottom outer tube 6 with welding manner, plays connection graphite electrode and conduction.Outer tube 6 is outlet pipe; This water-cooling metal electrode is a seal, the sealing plate 3 for sealing and reinforcing arranged at its top, and sealing plate 3 is copper alloy plate, and each parts connect does not have hole.The suspension ring 2 for lifting electrode are welded with above sealing plate.
Interior pipe 7 end is cone mouth shape, and the nipple 9 that cone mouth end stretches into hollow is inner, and define water stream channel, interior pipe 7 end taper is consistent with nipple tapering, keeping parallelism.Outer tube will bear conduction task.Its material is red copper or copper alloy, and its tube wall sectional dimension is consistent with the cross-sectional area of conducting copper or conductive cross arm, should be able to reach identical conductive capability.Upper outside diameter and the bottom graphite electrode diameter of metal electrode are consistent.
Interior pipe 7 is inlet pipeline, and between interior pipe 7 and outer tube 6, cavity is outlet pipeline; Water supply connector 4 penetrates in interior pipe 7 tube chamber, and water out adapter 1 penetrates in the tube chamber between interior pipe 7 and outer tube 6.The quick UNICOM joint that inlet tube and outlet tube front end connects respectively contributes to disconnecting fast or connecting cooling water when changing electrode.
Metal water-cooling electrode all should good seal except water inlet pipe and water outlet pipe, and each weld must not operationally have cooling water to reveal.Metal water-cooling electrode outer surface is provided with the spacing ring 5 keeping upper limit position when being convenient to holding electrode.When electrode spacing ring is close to dop, show that electrode transfers to extreme position.Still can not operate at full capacity if electrode dop drops to minimum point, illustrate and more will renew electrode.
Realize the quick cooling of nipple and electrically conductive graphite electrode, the flow of cooling water is decided by that the unit interval passes to the total amount of heat of water cooled electrode and the temperature rise of cooling water permission, to be correlated with the design of cooling device with reference to metallurgical furnace, consider working environment and Production requirement, the cooling system of this water cooled electrode goes out in water space water speed and reaches 3-6m/s and namely fully can meet need of production, and the Inlet and outlet water temperature difference meeting cooling of electrode water is not more than 20 DEG C.
Outer tube 6 material of metal water-cooling electrode is red copper or copper alloy, and the sectional area of its tube wall sectional dimension and conducting copper or conductive cross arm current-carrying part is basically identical.
The total length of electrode should be determined according to electric arc furnaces structure.Its metal water-cooling electrode length can be determined with reference to the distance of liquid level in clamper end face to stove, connects an arthrolith electrode ink below.The length specification of current graphite electrode changes with its diameter.Graphite electrode diameter is from 100mm to 600mm, and length is then increased to 2400mm from 1400mm.During use, graphite electrode often can insert slag, and the degree of depth of insertion can with technological parameter (secondary voltage, slag liquid temp, liquid level height) change.Therefore, when the electrode at every turn newly changed uses, clamper upper end can keep one section of about isometric with graphite electrode metal water-cooling electrode.With consumption of electrode, lower discharge electrode is taken the circumstances into consideration in timing, until metal water-cooling electrode transfer to spacing ring and clamper end contact place and graphite electrode almost runs out of time, illustrate that this renews electrode.
Operation principle of the present utility model is: the water service pipe that quick water flowing joint is housed is welded in pipe and water outlet outer tube upper end in water.A graphite electrode arranges two cover water cooled electrodes.When graphite electrode is changed, graphite electrode puts forward to be placed on accumulator tank together with metal water-cooling electrode integral, inserts another water cooled electrode in stove.The graphite head changed can use by secondary.Water flowing jiont treatment has snap joint, can cut off the water supply rapidly at short notice, supply water, and realizes the replacing of electrode, and the nipple that water cooled electrode end is arranged connects water cooled electrode and graphite electrode, ensures electric current supply.The nipple that water inlet pipe lower tilt passes to hollow is inner, ensures high-velocity flow speed, ensures the cooling of metal water cooled electrode and nipple.The shelves ring welded outside outlet pipe guarantees the position of electrode jaw, and operability strengthens.Operationally, the heat that electrode produces is taken away by the cooling water of outlet pipe inside, and the utility model water cooled electrode decreases the oxidation of graphite electrode, both ensure that the electric conductivity of electrode, and has reduced production cost.
Be provided with 4 cover water cooled electrode stations near every platform three-phase furnace table, electrode deposit station be one vertically place pass into nitrogen-sealed storage cylinders shape groove, the spacing ring 5 of electrode can carry on a shoulder pole that to be placed on accumulator tank suitable for reading, and electrode vertical is suspended in accumulator tank.Its underpart is provided with hermatic door to be opened/closed, can carry out assembling Electrode Operation when opening.Wherein the standing Water-cooled composite electrode assembled of 3 cover is to change at any time.Change electrode time, by with after Water-cooled composite electrode entirety propose dop, be put into vacant nitrogen-sealed accumulator tank, insert another mounted water cooled electrode.After the electrode temperature changed reduces, can stop, for nitrogen, backing out remaining graphite electrode, changing new graphite electrode, then will just be connected on foremost with rear remaining electrode, continue to use.Change electrode like this and can save operating time on electric arc furnaces, safety, saving.
The standing water cooled electrode having 3 cover ready for use at ordinary times.Electric arc furnaces first will disconnect the snap joint of cooling water when changing electrode, then the direct electrode being put into sky that hung out by old electrode is deposited in station, then hangs in electric arc furnaces dop by new electrode, UNICOM's cooling water.Successively change 3 electrodes successively, the quick-replaceable of electrode can be realized.
If also want to utilize the old graphite electrode head changed, need after connecting metal water-cooling electrode and new graphite electrode, older graphite electrode head is connected to new graphite electrode head.
Below by specific embodiment, the utility model is described further.
Embodiment 1
With 3200KVA electric arc furnaces heating mineral wool melt cinder raw material.Every phase electrode short net copper bar part copper bar of 4 pieces of 275 × 10mm is powered.According to following formula
The cross-sectional area of electrode outer wall conducting position cross-sectional area=conducting copper or contact tube
External diameter can be selected to be the Water-cooled composite electrode of 350mm, design electrode outer tube wall thickness 10mm, interior pipe external diameter 260mm, wall thickness 6mm, screwed union wall thickness 22mm, above car have convex thread to mate with Φ 350 graphite electrode nipple.Graphite electrode length 1500mm, metal water-cooling electrode length 3000mm.Metal water-cooling combined electrode structure as previously mentioned, comprises the water-cooling system of penstock and a water output duct.Suspension ring, copper coin, water cooled electrode intermediate inner tube water inlet outside backwater, interior pipe 73 fulcrums are fixed on the bottom of outer tube 6, to keep spacing.Outer tube 6 and nipple 9 weld together, and interior pipe 7 end opening tube wall keeps parallel with nipple 9 inwall, pipe 7 lower port distance nipple inner bottom surface 20mm in water inlet.Define cooling water circular passage, go out water speed and reach 3-6m/s, realize the quick cooling of nipple and conduction tube wall.
Joint surface screw thread specification and Φ 350 graphite electrode interface match.Outer tube 6 and interior pipe 7 upper end be all provided with snap joint is housed water flowing water out adapter 1, water supply connector 4.Near water inlet pipe, enclosing around water cooled electrode one, be welded with diameter 20mm copper rod, for limiting the terminal location between electrode and dop, in addition, also can be used as strong point when water cooled electrode is deposited in nitrogen-sealed accumulator tank.Water inlet pipe and outlet pipe top are all arranged is equipped with water flowing snap joint, when electrode is changed, remaining graphite electrode puts forward to be placed on accumulator tank together with metal water-cooling electrode integral, another metal water-cooling electrode is inserted in stove, water flowing jiont treatment has snap joint, the replacing of water pipeline can be realized at short notice, save time.Water inlet pipe bottom passes into the nipple of hollow inner, and distance end 20mm, defines cooling water circular passage, go out water speed and reach 3-6m/s, realize the quick cooling of nipple and conducting element.
Above content is in conjunction with concrete preferred embodiment further detailed description of the utility model; can not assert that detailed description of the invention of the present utility model is only limitted to this; for the utility model person of an ordinary skill in the technical field; without departing from the concept of the premise utility; some simple deduction or replace can also be made, all should be considered as belonging to the utility model by submitted to claims determination scope of patent protection.
Claims (8)
1. for the production of a Water-cooled composite electrode for mineral wool electric arc furnaces, it is characterized in that, this electrode is made up of two sections, and epimere is metal water-cooling electrode, and hypomere is graphite electrode (10); Epimere is connected by metal threaded joint (9) with hypomere;
Described metal water-cooling electrode comprises interior pipe (7) and outer tube (6) two concentric pipes, and interior pipe (7) is fixed on outer tube (6) inwall by uniform fulcrum; The bottom of outer tube (6) is connected with metal threaded joint (9); The top of outer tube (6) is respectively equipped with water supply connector (4) and water out adapter (1); The outer tube upper end face of water cooled electrode is welded with sealing plate (3); The suspension ring (2) for lifting electrode are welded with above sealing plate.
2. a kind of Water-cooled composite electrode for the production of mineral wool electric arc furnaces according to claim 1, it is characterized in that: described interior pipe (7) end is cone mouth shape, it is inner that cone mouth end stretches into nipple (9), and tapering is consistent with nipple tapering, keeping parallelism.
3. a kind of Water-cooled composite electrode for the production of mineral wool electric arc furnaces according to claim 1, is characterized in that: described interior pipe (7) is inlet pipeline, and between interior pipe (7) and outer tube (6), cavity is outlet pipeline; Water supply connector (4) penetrates in interior pipe (7) tube chamber, and water out adapter (1) penetrates in the tube chamber between interior pipe (7) and outer tube (6).
4. a kind of Water-cooled composite electrode for the production of mineral wool electric arc furnaces according to claim 1, is characterized in that: described outer tube (6) upper outside wall is provided with for spacing becket (5).
5. a kind of Water-cooled composite electrode for the production of mineral wool electric arc furnaces according to claim 1, is characterized in that: the external diameter of described epimere metal water-cooling electrode is identical with hypomere graphite electrode external diameter.
6. a kind of Water-cooled composite electrode for the production of mineral wool electric arc furnaces according to claim 1, is characterized in that: described outer tube (6) material is red copper or copper alloy.
7. a kind of Water-cooled composite electrode for the production of mineral wool electric arc furnaces according to claim 1, is characterized in that: described sealing plate (3) material is copper alloy plate.
8. a kind of Water-cooled composite electrode for the production of mineral wool electric arc furnaces according to claim 1, is characterized in that: the convex thread of described nipple (9) and the recessed screw thread of graphite electrode (10) match.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520321187.5U CN204694048U (en) | 2015-05-18 | 2015-05-18 | A kind of Water-cooled composite electrode for the production of mineral wool electric arc furnaces |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520321187.5U CN204694048U (en) | 2015-05-18 | 2015-05-18 | A kind of Water-cooled composite electrode for the production of mineral wool electric arc furnaces |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105188162A (en) * | 2015-10-15 | 2015-12-23 | 交城义望铁合金有限责任公司 | Water-cooling combined electrode for DC electric furnace for producing mineral wool |
| CN108151537A (en) * | 2017-12-14 | 2018-06-12 | 湖南顶立科技有限公司 | A kind of multi-layer composite electrode and manufacturing method |
| CN108251654A (en) * | 2018-03-19 | 2018-07-06 | 武汉科技大学 | A kind of electroslag remelting device and method for being used to refine old metal particle |
-
2015
- 2015-05-18 CN CN201520321187.5U patent/CN204694048U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105188162A (en) * | 2015-10-15 | 2015-12-23 | 交城义望铁合金有限责任公司 | Water-cooling combined electrode for DC electric furnace for producing mineral wool |
| CN108151537A (en) * | 2017-12-14 | 2018-06-12 | 湖南顶立科技有限公司 | A kind of multi-layer composite electrode and manufacturing method |
| CN108151537B (en) * | 2017-12-14 | 2019-09-17 | 湖南顶立科技有限公司 | A kind of multi-layer composite electrode and manufacturing method |
| CN108251654A (en) * | 2018-03-19 | 2018-07-06 | 武汉科技大学 | A kind of electroslag remelting device and method for being used to refine old metal particle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| 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: 20151007 Termination date: 20180518 |