CN115134957A - Electrode holder and electrode column system - Google Patents

Abstract

The invention discloses an electrode holder and an electrode column system, which relate to the technical field of submerged arc furnace mechanical equipment and comprise a pressing block, a holding cylinder assembly, an electrode, a pressure ring, a bottom ring and a protection screen; a copper tile is arranged around the outside of an electrode shell of the electrode; the pressing block is positioned outside the copper bush, and the copper bush is tightly attached to the electrode shell under the external pressure of the pressing block; the outer side of the copper tile is hooped with a pressure ring, the pressure ring is positioned at the lower end of the holding cylinder assembly, the lower end of the pressure ring is provided with a bottom ring, and the electrode is positioned in the pressure ring; the bottom ring is provided with a supporting surface of the protective screen, and the lower end of the protective screen is fixed on the supporting surface of the protective screen through an embedded hook. The invention prolongs the service life of each part, improves the operation rate of the submerged arc furnace, reduces the maintenance difficulty and the maintenance cost and achieves the purposes of saving electricity and increasing the yield by the mutual connection, assembly and matching process of the bottom ring, the protective screen and each part of the holder system.

Description

Electrode holder and electrode column system

Technical Field

The invention relates to the technical field of submerged arc furnace mechanical equipment, in particular to an electrode holder and an electrode column system.

Background

The ore-smelting furnace is also called electric arc furnace or resistance furnace, and is an industrial furnace with huge power consumption. It is mainly used for producing ferrosilicon, ferromanganese, ferrochromium, ferrotungsten, silicomanganese, calcium carbide, etc. The submerged arc furnace mainly comprises an electrode column system, a furnace shell, a furnace cover, a furnace lining, a water cooling system, a smoke exhaust system, a dust removal system, a feeding and discharging system, a burner, a hydraulic system, a submerged arc furnace transformer, various electrical equipment and the like. The electrode column system is the core part of the submerged arc furnace mechanical equipment and comprises a holder system, a bottom ring device, a protective screen, an upper holding cylinder, a lower holding cylinder, an annular copper pipe, a conductive vertical pipe, an electrode cylinder, a sealing insulating part and the like. When the submerged arc furnace runs, the core component of the holder system runs in a high-temperature and high-concentration dust environment, so that the core component of the holder system needs to be cooled by water, and the bottom ring and the protection screen are used for sealing and protecting the holder component, so that the normal running of the submerged arc furnace is ensured.

The electrode column holder system operates in a high temperature environment, requires sealed protection using a bottom ring and protective shields, and cooling water cools each component. However, the traditional bottom ring and the traditional protective screen have the defects of design, and are easy to damage, leak water and deform. If the bottom ring is wrapped outside the electrode, usually 6 protective screens of each electrode completely surround the electrode and are connected to form the bottom ring, and each bottom ring is hung on the holding cylinder through a respective hanging device to bear the whole weight of the protective screens. Due to the design defects of the original design of the bottom ring hanging point and the cooling water path, the water-cooling device is easy to damage, deform and leak water in a high-temperature environment. The bottom ring supports the weight of the protection screen, and due to the size design defect of the supporting surface of the bottom ring, the lower edge of the protection screen is directly contacted with flame in the furnace to be burnt under severe conditions, so that the protection screen is easy to damage and leak water. The traditional protective screen is made of stainless steel, so that the cooling effect is poor, the protective screen is easy to crack and difficult to maintain in operation; the magnetic isolation effect of stainless steel materials is not as good as that of copper, and the power consumption of products is high; once the whole protection screen is damaged, the maintenance is difficult and the replacement cost is high.

Chinese patent CN211451883U discloses an accurate controlling means in hot stove electrode position in ore deposit and airtight hot stove in ore deposit, accurate controlling means in hot stove electrode position in ore deposit, including hydraulic pressure elevating gear, the compact heap, the combination is the holder, the fixed tip that sets up at hydraulic pressure elevating gear of compact heap, the combination is located the top of compact heap, the fixed scale that is provided with on the combination holder, hydraulic pressure elevating gear includes the hydraulic pressure oil station, hydraulic pressure lift cylinder, first defeated oil pipe, the defeated oil pipe of second, hydraulic cylinder fixed part, be provided with first pressure monitor on the defeated oil pipe of first, second pressure monitor on the defeated oil pipe of second, hydraulic cylinder fixed part is fixed to be set up in the bottom of hydraulic pressure lift cylinder, with hydraulic pressure lift cylinder fixed.

Chinese patent CN2540080 discloses an electrode holder for submerged arc furnaces, which is characterized in that the upper end of a cylinder link rod is fixedly connected with a cylinder piston in a cylinder, a spring is sleeved on the cylinder link rod between the cylinder piston and the bottom of the cylinder, the lower end of the cylinder link rod is connected with a threaded link rod, the lower end of the link rod is hinged with the outer end of a lever hinged on an ear plate on the outer wall of a holding cylinder, the lower end of an upper pull rod is fixedly connected with a lower pull rod in an insulation manner, the lower end of the lower pull rod is hinged with the outer end of a pressing rod, the inner end of the pressing rod is in contact with the top of a copper tile in a fixed manner, the lower end of a hanging rod is hinged with a lifting lug fixedly connected on the outer wall of the copper tile, and the upper end of the hanging lug is hinged with the lower end of an adjustable lifting lug in an insulation manner.

Chinese patent CN103604300A discloses an electrode holder, which comprises: a copper tile for clamping the electrode; the holding cylinder is arranged above the copper tile and is connected with the copper tile through a hanging device; the protective sleeve is arranged on the outer side of the copper tile and is spaced from the outer side wall of the copper tile by a preset distance; and a pressure ring, the pressure ring comprising: the pressure ring body is sleeved on the copper tile so as to apply pressure to the copper tile through a corrugated expansion tank on the pressure ring body; and the fireproof ramming material part is laid on the bottom surface of the pressure ring body.

Chinese patent CN106658808A relates to a pressing device of electrode holder for submerged arc furnace and an electrode holder for submerged arc furnace. The compressing device comprises a flange cover, a telescopic part, an elastic corrugated pipe, a cooling pipe and a copper tile extrusion piece, wherein two ends of the elastic corrugated pipe are respectively connected with the telescopic part and the flange cover in a sealing mode so as to form an accommodating cavity among the flange cover, the telescopic part and the elastic corrugated pipe, the cooling pipe is arranged inside the accommodating cavity, the copper tile extrusion piece is connected to the end part, far away from the elastic corrugated pipe, of the telescopic part, an oil hole, a water inlet hole and a water outlet hole are formed in the flange cover, the oil hole is connected with the accommodating cavity, and the water inlet hole and the water outlet hole are respectively connected with two ends of the cooling pipe.

The bottom ring and protective shield of the above-identified patents are susceptible to damage, which in turn affects the proper operation of the furnace.

Disclosure of Invention

In order to reduce various faults of the electrode, reduce the damage of a bottom ring and a protection screen, better protect a holder system of a submerged arc furnace and prolong the service life of equipment parts of the holder system, the invention provides an electrode holder and an electrode column system.

In order to realize the purpose of the invention, the technical scheme adopted by the invention is as follows:

an electrode holder comprises a pressing block, a holding cylinder assembly, an electrode, a pressure ring, a bottom ring and a protective screen;

a copper tile is arranged around the outside of an electrode shell of the electrode; the pressing block is positioned outside the copper tile, the copper tile is tightly attached to the electrode shell under the external pressure of the pressing block, so that the large current transmitted from the short net is transmitted to the electrode through the water-cooled cable, the annular copper pipe and the water-cooled conductive vertical pipe through the copper tile, and when the electrode works, the conductive copper tiles are pressed on the electrode one by the ripple expander, each copper tile can be tightly combined with the electrode, and the phenomenon that arc striking occurs between the copper tile and the electrode due to the fact that bias current and contact pressure are uneven is avoided;

the outer side of the copper tile is hooped with a pressure ring, the pressure ring is positioned at the lower end of the holding cylinder assembly, the lower end of the pressure ring is provided with a bottom ring, and the electrode is positioned in the pressure ring;

the bottom ring is provided with a supporting surface of the protective screen, and the lower end of the protective screen is fixed on the supporting surface of the protective screen through an embedded hook.

Furthermore, the pressing block is located between the copper tile and the pressure ring, and the pressing block exerts certain pressing force on the copper tile under the action of the pressure ring.

Furthermore, the diameter of the electrode can be changed at will by combining a plurality of copper tiles.

Furthermore, a holding cylinder assembly is fixed at the upper end of the electrode, the holding cylinder assembly comprises an upper holding cylinder and a lower holding cylinder, the lower end of the upper holding cylinder is fixedly connected with the upper end of the lower holding cylinder, and the copper shoe is hung on the holding cylinder assembly through a hanging device on the copper shoe.

Furthermore, a cooling water pipeline is arranged outside the lower holding cylinder; the lower end of the cooling water pipeline is provided with a plurality of conductive copper pipes which are positioned outside the holding cylinder assembly.

Furthermore, the conductive copper pipe is connected with the copper tile; and the cooling water pipeline is connected with the conductive copper pipe.

Furthermore, the bottom ring is provided with a bolt hole, and the adjacent bottom rings are fixedly connected through bolts arranged in the bolt hole.

Furthermore, the bottom ring is also provided with a bottom ring hanging part, a through hole is formed in the bottom ring hanging part, a pressure ring hanging point and a pressure ring lifting lug are arranged on the side face of the pressure ring, the pressure ring hanging point is fixedly connected with the bottom ring through a mounting and fixing piece arranged in the through hole, and the pressure ring lifting lug is fixedly connected with the protection screen.

Furthermore, a mounting hole is formed in the pressure ring and used for assembling a corrugated pipe, and a gland of the corrugated pipe is located on the outer side face of the pressure ring.

Furthermore, the pressure ring, the corrugated pipe and the bottom ring are combined into a whole, and an accommodating cavity is formed among the pressure ring, the corrugated pipe and the bottom ring, so that the connection of the bottom ring is enhanced.

Furthermore, one end of the corrugated pipe is connected with the gland, and the other end of the corrugated pipe is provided with a telescopic component.

Furthermore, a sealing ring is omitted from an external oil way of the corrugated pipe, and an exhaust passage of the corrugated pipe is increased.

Furthermore, the bottom ring is provided with a bottom ring water inlet and a bottom ring water outlet, the cooling water pipeline consists of a plurality of water pipes and comprises a water inlet pipeline and a water return pipeline, and the bottom ring water inlet is connected with the water inlet pipeline of the cooling water pipeline; the bottom water return port is connected with a water return pipeline of the cooling water pipeline.

Furthermore, the height of the supporting surface of the protective screen on the bottom ring is 150mm, the width of the supporting surface is 70mm, and the service life of the bottom ring is sung.

Furthermore, the diameter of the bottom ring is larger than that of the protection screen, the protection screen is completely seated on the support surface of the protection screen of the bottom ring, flame burning in the furnace under severe conditions of direct contact of the lower edge of the protection screen is avoided, and the service life of the protection screen is prolonged.

Furthermore, the protection screen comprises an upper section protection screen and a lower section protection screen, an embedded hook is arranged at the lower end part of the upper section protection screen, a hook groove is arranged at the upper end part of the lower section protection screen, and the embedded hook of the upper section protection screen is matched with the hook groove of the lower section protection screen.

Furthermore, the upper and lower segmented structures of the protective screen can avoid the replacement of the whole protective screen due to the burning loss of the lower part of the protective screen, and the maintenance cost is reduced.

Furthermore, the upper protection screen is provided with a protection screen water inlet, a protection screen water return port and bolt fixing holes, the protection screen water inlet is connected with a water inlet pipeline of the cooling water pipeline, the protection screen water return port is connected with a water return pipeline of the cooling water pipeline, the protection screen water return port is fixed in the bolt fixing holes through lower flange bolts arranged on the holding cylinder assembly, and then the protection screen is fixedly connected with the holding cylinder assembly.

Furthermore, the protective screen is made of a red copper material with better magnetic isolation performance, so that the cooling effect is improved, the service life is prolonged, the power consumption of products is reduced, and high-temperature smoke is prevented from entering the protective screen to burn the parts of the holder by combining the positioning fixation, the sealing performance and the insulating performance of the protective screen.

Furthermore, the copper tiles, the bottom ring and the protective screen are protected and fixed by special insulating sealing materials, so that the situation that flame and radiant heat in the furnace generate overheating and burning loss on the electrode shell is avoided fundamentally, and electrode accidents are avoided.

An electrode column system comprises an electrode holder, a lifting device and a sealing insulating part;

the top of the lifting device is provided with an electrode, and the working end of the electrode is positioned below the lifting device; the bottom of the lifting device is provided with a holding cylinder assembly; the electrodes are located within the elevator device and the grip barrel assembly,

one end of the sealing insulating part is connected with the copper tile, and the other end of the sealing insulating part is connected with the protection screen.

Further, the lifting device is fixedly connected with the electrode through an electrode clamping device.

Furthermore, the bottom ring is provided with a plurality of water paths, so that the cooling effect of cooling water on the bottom ring is improved, the service life of the bottom ring is prolonged, and high-temperature deformation is avoided.

Furthermore, the protective screen is fixedly connected with the lower end of the lower holding cylinder to fix the upper part of the protective screen and bear the weight of the protective screen;

furthermore, the conductive copper pipes are connected from the left end and the right end of the electrode holder and are extended downwards along the holding cylinder assembly to each end of the copper tile to be respectively connected with a plurality of conductive copper pipes.

Compared with the prior art, the invention has the following beneficial effects:

the fixing mode of the bottom ring structure and the protection screen is adjusted, so that the service life of the holder system is prolonged, the operation rate of the submerged arc furnace is improved, and the bottom ring and the protection screen also play a role in protecting the escape of furnace gas of the sealed submerged arc furnace and high-temperature damage electrode equipment; the protective screen is made of a material containing Cu99.99% of all copper, is non-magnetic and has excellent circulating cooling effect, and the protective screen is designed into an upper and lower segmented structure, so that the replacement of the whole protective screen due to lower burning loss can be avoided, and the maintenance cost is reduced; the diameter of the bottom ring is larger than that of the protection screen, and the protection screen is specially designed to be seated on the bottom ring, so that the protection screen is prevented from being directly contacted with flame in the furnace to be burnt under severe conditions, and the service life is prolonged; and the copper tile, the bottom ring and the protective screen are protected and fixed by special insulating sealing materials, so that the situation that flame and radiant heat in the furnace generate overheating and burning loss on the electrode shell is fundamentally avoided, and the electrode accident is avoided. The invention prolongs the service life of each part, improves the operation rate of the submerged arc furnace, reduces the maintenance difficulty and the maintenance cost and achieves the purposes of saving electricity and improving the yield by the mutual connection, assembly and matching process of the bottom ring, the protective screen and each part of the holder system.

Drawings

FIG. 1 is a schematic view of the overall structure of an electrode column system according to the present invention;

FIG. 2 is a partial block diagram of an electrode holder according to the present invention;

FIG. 3 is an enlarged view of portion A of FIG. 1;

FIG. 4 is an enlarged view of the portion B of FIG. 1;

FIG. 5 is a schematic view of a bottom ring in the prior art;

FIG. 6 is a cross-sectional view taken along line A-A of FIG. 5;

FIG. 7 is a cross-sectional view taken along line B-B of FIG. 5;

FIG. 8 is a schematic flow diagram of the cooling water of FIG. 5;

FIG. 9 is a schematic structural view of a bottom ring in example 1 of the present invention;

FIG. 10 is a cross-sectional view taken along line A-A of FIG. 9;

FIG. 11 is a cross-sectional view taken along line B-B of FIG. 9;

FIG. 12 is a cross-sectional view taken along line C-C of FIG. 9;

FIG. 13 is a schematic flow diagram of the cooling water of FIG. 9;

reference numerals: 1. an electrode holder; 2. an electrode; 3. a bottom ring; 4. a hanging rod; 5. a copper tile; 6. an upper section of protective screen; 7. a lower section protection screen; 8. a pressure ring; 9. a gland; 10. a bellows; 11. a compression block; 12. a hanging device; 13. a sealing insulating part; 14. a pressure ring hanging point; 15. a bottom ring hanging part; 16. a lifting device; 17. a hanger; 18. a conductive copper tube; 19. a hook; 20. an upper holding cylinder; 21. a lower holding cylinder; 22. a cooling water line; 23. a pressure ring lifting lug; 24. an electrode clamping device; 25. a bottom ring water inlet; 26. the bottom part returns to the water gap.

Detailed Description

In order to make the purpose and technical solution of the present invention clearer, the technical solution of the present invention will be clearly and completely described below with reference to the embodiments.

Example 1

An electrode holding system as shown in fig. 1 comprises an electrode holder 1 and a lifting device 16, wherein the electrode holder 1 as shown in fig. 2-4 comprises a pressing block 11, a holding cylinder assembly, an electrode 2, a pressure ring 8, a bottom ring 3 and a protective screen; a copper tile 5 is arranged around the outside of the electrode shell of the electrode 2; as shown in fig. 4, an external groove is formed in one side of the brasses 5, the pressing block 11 is embedded in the external groove of the brasses 5, the pressing block 11 is located between the brasses and the pressure ring 8, the pressing block 11 applies a certain pressing force to the brasses 5 under the action of the pressure ring 8, the brasses 5 cling to the electrode shell under the external pressure of the pressing block 11, and it is guaranteed that large current transmitted from a short net is transmitted to the electrode 2 through the brasses 5 through a water-cooling cable, an annular copper pipe and a water-cooling vertical conductive pipe, and when the electrode is operated, the expanders of the corrugated pipe 10 press the conductive brasses 5 on the electrode 2 one by one, so that each brasses 5 can be tightly combined with the electrode 2, and arc striking between the brasses 5 and the electrode 2 due to uneven bias current and contact pressure is avoided. The bottom ring 3 is provided with a protection screen supporting surface, the height of the protection screen supporting surface is 150mm, the width of the protection screen supporting surface is 70mm, and the service life of the bottom ring 3 is effectively prolonged. And the diameter of the bottom ring 3 is greater than that of the protective screen, the protective screen can be completely seated on the supporting surface of the protective screen of the bottom ring 3, the lower edge of the protective screen is prevented from being directly contacted with flame in the furnace to be burnt under severe conditions, and therefore the service life of the protective screen can be prolonged. The protection screen includes upper segment protection screen 6 and hypomere protection screen 7, and the lower extreme portion of upper segment protection screen 6 is equipped with embedded pothook 19, and the upper end of hypomere protection screen 7 is equipped with the groove of colluding, and the embedded pothook 19 of upper segment protection screen 6 cooperates with the groove of colluding of hypomere protection screen 7. The upper and lower sectional structures of the protective screen can avoid the replacement of the whole protective screen due to the burning loss of the lower part of the protective screen, and the maintenance cost is reduced. Upper segment protection screen 6 is equipped with the protection screen water inlet, protection screen return water mouth and bolt fastening hole, and the cooling water pipeline has a lot of water pipes to constitute, including water inlet pipe and wet return, wherein the protection screen water inlet is connected with the inlet channel of cooling water pipeline 22, and the protection screen return water mouth is connected with the wet return of cooling water pipeline 22, through will setting up in the lower flange bolt fastening who holds a subassembly in the bolt fastening hole, and then will protect the screen and hold a subassembly fixed connection together. The material of the protective screen is selected from a purple copper material with better magnetic isolation performance, so that the cooling effect is improved, the service life is prolonged, the power consumption of products is reduced, and the high-temperature smoke is prevented from entering the protective screen to burn out parts of the holder by combining the positioning fixation, the sealing performance and the insulating performance of the protective screen. The copper tile 5, the bottom ring 3 and the protective screen are protected and fixed by special insulating sealing materials, so that the situation that flame and radiant heat in the furnace generate overheating burning loss on the electrode shell is fundamentally avoided, and electrode accidents are completely eradicated.

A pressure ring 8 is also hooped outside the copper tile 5, the pressure ring 8 is positioned at the lower end of the holding cylinder assembly, the lower end of the pressure ring 8 is provided with a bottom ring 3, the electrode 2 is positioned inside the pressure ring 8, and a sealing insulating part 13 is arranged between the pressure ring 8 and the bottom ring 3; the bottom ring 3 is provided with a supporting surface of the protective screen, and the lower end of the protective screen is fixed on the supporting surface of the protective screen through an embedded hook 19. Electrode 2 is cylindrical structure, 12 copper tiles 5 have been arranged to 2 circumference of an electrode, and change the 5 quantity of copper tiles of polylith combination, can suitably change electrode 2's diameter, it is concrete, as shown in fig. 3, the outside that is close to copper tiles 5 is equipped with pressure ring 8, pressure ring 8 is fixed in bottom ring 3 top, and be equipped with sealed insulating part 13 between pressure ring 8 and the bottom ring 3, the upper end of pressure ring 8 and the one end swing joint of pendant, the other end of pendant is equipped with L type recess, lower section protection screen 7 is fixed in L type recess jointly through pothook 19 structure and upper segment protection screen 6, and pressure ring 8, pendant 17 and copper tiles 5 all are located the protection screen inboard.

A holding cylinder assembly is fixed at the upper end of the electrode 2, the holding cylinder assembly comprises an upper holding cylinder 20 and a lower holding cylinder 21, the lower end of the upper holding cylinder 20 is fixedly connected with the upper end of the lower holding cylinder 21, and the copper tile 5 is hung on the holding cylinder assembly, in particular on the lower holding cylinder 21, through a hanging device 12 on the copper tile 5. A cooling water pipeline 22 is arranged outside the lower holding cylinder 21; a plurality of contact tubes 18 are provided at the lower end of the cooling water pipe 22, and the contact tubes 18 are located outside the grip cylinder assembly. The conductive copper pipe 18 is connected with a copper tile; the cooling water line 22 is connected to the contact tube 18. The bottom ring 3 can be provided with a plurality of according to actual need, and the bottom ring 3 is provided with the bolt hole, and through bolt fixed connection between the adjacent bottom ring 3, the bolt is inserted and is established in the bolt hole of bottom ring 3. The bottom ring 3 is also provided with a bottom ring hanging part 15, the bottom ring hanging part 15 is provided with a through hole, the pressure ring 8 is provided with a pressure ring hanging point 14, as shown in fig. 3, the pressure ring hanging point 14 of the pressure ring 8 near the copper tile 5 is fixedly connected with the through hole on the bottom ring hanging part 15 of the bottom ring 3 through a screw, as shown in fig. 4, one side of the copper tile 5 is provided with the pressure ring 8, the side surface of the pressure ring 8 is provided with a pressure ring lifting lug 23, and the pressure ring lifting lug 23 is hung on the outer side surface of the lower holding cylinder 21 through a hanging rod 4; the junction of the upper section protection screen 6 and the lower section protection screen 7 near the copper tile 5 is also provided with a J-shaped hook which is connected with the hanging rod 4 through the J-shaped hook.

The pressure ring 8 is provided with a mounting hole for assembling a corrugated pipe 10, and a gland 9 of the corrugated pipe 10 is positioned on the outer side surface of the pressure ring 8. The pressure ring 8, the corrugated pipe 10 and the bottom ring 3 are combined into a whole, and an accommodating cavity is formed among the pressure ring 8, the corrugated pipe 10 and the bottom ring 3, so that the connection of the bottom ring 3 is enhanced. One end of the bellows 10 is connected to the gland 9 and the other end is connected to a telescopic member. The external oil circuit of bellows 10 cancels the sealing washer, increases bellows 10 exhaust passage. The bottom ring 3 is provided with a bottom ring water inlet 25 and a bottom ring water return port 26, and the bottom ring water inlet 25 is connected with a water inlet pipeline of the cooling water pipeline 22; the bottom water return port 26 is connected to the water return pipe of the cooling water line 22.

An electrode column system as shown in figure 1, comprising an electrode holder 1 and a lifting device 16; the top of the lifting device 16 is provided with an electrode 2, the bottom of the electrode 2 is an electrode working end, and the electrode working end is positioned below the lifting device 16; a holding cylinder assembly is arranged at the bottom of the lifting device 16; the electrode 2 passes through the upper grip barrel 20 and the lower grip barrel 21 until it extends below the bottom ring 3. The lifting device 16 is fixedly connected to the electrode by means of an electrode clamping device 24. The bottom ring 3 is provided with a plurality of water channels, so that the cooling effect of cooling water on the bottom ring 3 is improved, the service life of the bottom ring 3 is prolonged, and high-temperature deformation is avoided, as shown in fig. 5-8, the bottom ring is of a common bottom ring 3 structure in the prior art, the flow direction of the cooling water is single, and fig. 9-13 are of an improved bottom ring 3 structure, the flow direction of the cooling water reaches a plurality of channels, and the cooling effect is improved. The protection screen is fixedly connected with the lower end of the lower holding cylinder 21, so that the functions of fixing the upper part of the protection screen and bearing the weight of the protection screen are achieved; the conductive copper tube 18 is connected from both left and right ends of the electrode holder 1, extends downward along the lower holding cylinder 21, and is connected to a connecting end of the copper shoe.

Specifically, the working principle of the electrode column system in the invention is as follows: the invention is composed of a bottom ring 3 with multi-hanging-point hanging and multi-channel waterway design and a protective screen which is made of all copper and is designed in an up-and-down subsection mode. Above-mentioned bottom ring 3 makes up into an organic whole with pressure ring bellows 10, and novel copper is from top to bottom the protection screen of segmentation design and is sat on bottom ring 3, adopts special insulating sealing material protection fixed between copper tile, bottom ring 3 and the protection screen, and flame and radiant heat produce the overheated condition of burning loss to the electrode shell in the avoiding stove fundamentally, stop electrode 2 accident. And the protection screen adopts copper material, and the upper and lower segmentation design has realized the purpose of demagnetization, economize on electricity, increase output, reduce cost of maintenance. The electrode holder 1 is used for transmitting strong current to the working end of the electrode, converting electric energy into heat energy by arc combustion in the furnace to achieve the working condition required by smelting in the furnace, and simultaneously, performing pressure discharge and lifting of the electrode 2 to achieve the purposes of continuing and adjusting the sintering speed of the electrode and enabling the electrode 2 to continuously work. The main functions of the bottom ring 3 and the protective screen are to seal the escape of furnace gas of the submerged arc furnace and prevent high temperature from damaging the electrode equipment.

The above are merely embodiments of the present invention, which are described in detail and with particularity, and therefore should not be construed as limiting the scope of the invention. It should be noted that, for those skilled in the art, various changes and modifications can be made without departing from the spirit of the present invention, and these changes and modifications are within the scope of the present invention.

Claims (10)

1. An electrode holder is characterized by comprising a pressing block, a holding cylinder assembly, an electrode, a pressure ring, a bottom ring and a protective screen;

a copper tile is arranged around the outside of an electrode shell of the electrode;

the outer side of the copper tile is hooped with a pressure ring, the copper tile is tightly attached to the electrode shell under the external pressure of the pressure ring, the pressure ring is positioned at the lower end of the holding cylinder assembly, a bottom ring is arranged at the lower end of the pressure ring, and the electrode is positioned in the pressure ring;

the bottom ring is provided with a protection screen supporting surface, and the lower end of the protection screen is fixed on the protection screen supporting surface through an embedded hook;

the pressing block is positioned between the copper tile and the pressure ring.

2. The electrode holder according to claim 1, wherein a holding cylinder assembly is fixed to the upper end of the electrode, the holding cylinder assembly comprises an upper holding cylinder and a lower holding cylinder, the lower end of the upper holding cylinder is fixedly connected to the upper end of the lower holding cylinder, and the brasses are hung on the holding cylinder assembly by hanging devices on the brasses.

3. The electrode holder of claim 2, wherein a cooling water pipe is provided outside the lower holding cylinder; the lower end of the cooling water pipeline is provided with a conductive copper pipe which is positioned outside the holding cylinder assembly; the conductive copper pipe is connected with the copper tile; and the cooling water pipeline is connected with the conductive copper pipe.

4. The electrode holder of claim 1, wherein the bottom rings are provided with bolt holes, and the adjacent bottom rings are fixedly connected by bolts arranged in the bolt holes; the bottom ring is also provided with a bottom ring hanging part, a through hole is formed in the bottom ring hanging part, a pressure ring hanging point and a pressure ring lifting lug are arranged on the side face of the pressure ring, the pressure ring hanging point is fixedly connected with the bottom ring through a mounting and fixing part arranged in the through hole, and the pressure ring lifting lug is fixedly connected with the protection screen.

5. The electrode holder as claimed in claim 1, wherein the pressure ring has a mounting hole for assembling a bellows, the bellows has a pressing cover located on an outer side of the pressure ring, and the pressure ring, the bellows and the bottom ring are combined into a whole.

6. The electrode holder of claim 1, wherein the bottom ring has a bottom ring inlet and a bottom ring return inlet, the cooling water line includes a water inlet pipe and a water return pipe, and the bottom ring inlet is connected to the water inlet pipe of the cooling water line; the bottom water return port is connected with a water return pipeline of the cooling water pipeline.

7. The electrode holder of claim 1, wherein the protective shield comprises an upper protective shield and a lower protective shield, the lower end of the upper protective shield has embedded hooks, the upper end of the lower protective shield has hooks, and the embedded hooks of the upper protective shield are engaged with the hooks of the lower protective shield.

8. The electrode holder according to claim 7, wherein the upper protection screen has a protection screen water inlet connected to the water inlet pipe of the cooling water pipe, a protection screen water return port connected to the water return pipe of the cooling water pipe, and bolt fixing holes, and the protection screen and the holding cylinder assembly are fixedly connected by fixing a lower flange bolt provided on the holding cylinder assembly in the bolt fixing holes.

9. The electrode holder of claim 1, wherein the compression block is embedded in an external groove of the copper shoe, and applies a compression force to the copper shoe under the action of the pressure ring.

10. An electrode column system comprising an electrode holder according to any one of claims 1 to 9, further comprising lifting means and electrode clamping means;

the top of the lifting device is provided with an electrode, and the working end of the electrode is positioned below the lifting device; the bottom of the lifting device is provided with a holding cylinder assembly; the electrodes extend through the handle barrel assembly to below the bottom ring,

the lifting device is fixedly connected with the electrode through the electrode clamping device.

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