Electrode holder of ferronickel smelting submerged arc furnace

Abstract

The utility model relates to the technical field of electrode holders, and discloses an electrode holder of a ferronickel smelting submerged arc furnace, a connecting plate at the top end of a pressure ring penetrates through a pin shaft penetrating through the bottom of a pressure ring suspender, the pin shaft is matched with a cotter pin to connect the pressure ring and the pressure ring suspender together, and a gasket B is sleeved on the pin shaft; the top end of the pressure ring hanging rod penetrates through the mounting support outside the holding cylinder, and then the two ends of the pressure ring hanging rod are locked and fixed to the mounting support of the holding cylinder through a nut A and a nut B. The mounting support is provided with an insulating pipe B sleeving the top end of the pressure ring hanging rod and insulating gaskets located outside the two ends of the insulating pipe B. And gaskets A are respectively arranged between the nut A and the insulating gasket and between the nut B and the insulating gasket. The pressure ring suspender is ensured not to loosen or fall off through double fixing effects of the pin shaft, the gasket and the cotter pin, and the top end of the pressure ring suspender is fixed through threaded connection and fastening effects, so that the pressure ring suspender is ensured to be stably fixed at the top position.

Description

Technical Field

[0001] The utility model belongs to the technical field of electrode holders, and in particular relates to an electrode holder for a nickel-iron smelting ore-fired furnace. Background Art

[0002] In the electrode holder of the nickel-iron smelting submerged arc furnace, the pressure ring hanger is installed stably and reliably with the pressure ring to ensure the normal operation and stability of the electrode holder. The ambient temperature in the submerged arc furnace is high, and the pressure ring needs to withstand the test of high temperature. By fixing the pressure ring hanger in a stable and reliable position, the pressure ring can be prevented from deformation or loosening due to thermal expansion. The molten metal pressure in the submerged arc furnace is high, and the pressure ring needs to withstand this part of the pressure. If the pressure ring hanger is unstable, it may cause the pressure ring to deform or be damaged, which in turn affects the performance of the electrode holder. The refractory materials in the submerged arc furnace may cause wear or corrosion to the pressure ring. By fixing the pressure ring hanger in a stable and reliable position, the friction and corrosion between the pressure ring and the refractory materials can be reduced, extending the service life of the equipment.

[0003] Traditional technology relies on simple mechanical fixing methods, such as nuts or fasteners, for the installation and fixing of pressure rings, which may be easily loosened or fatigued in a long-term high-temperature environment. The wear and corrosion caused by long-term contact with high-temperature molten metal may not be taken into account, and the heat source cannot be effectively isolated to protect the pressure ring hanger outside the holding tube from high temperature and prevent structural damage caused by heat conduction. Utility Model Content

[0004] In order to make up for the deficiencies of the prior art, the utility model provides an electrode holder for a nickel-iron smelting ore-fired furnace.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] An electrode holder for a nickel-iron smelting ore-heat furnace comprises an electrode, a holding tube sleeved on the upper part of the electrode, a copper tile, a pressure ring, a conductive copper tube and a water cooling pipeline, wherein the holding tube comprises a lower holding tube, a middle section of the holding tube and an upper holding tube arranged in sequence from bottom to top, the copper tile is located under the lower holding tube and is circumferentially wrapped around the electrode, each copper tile is hung on the lower holding tube through its own copper tile hanger, and the pressure ring installed on the side of the copper tile is connected to the pressure ring hanger;

[0007] The pressure ring is welded with 1Cr18Ni9Ti non-magnetic material, the electrode is self-baking electrode with an electrode diameter of 1300mm, the copper tile and conductive copper tube are made of T2 material, and the internal water is cooled. The lower holding tube is made of 1Cr18Ni9Ti non-magnetic material, and the upper holding tube is made of Q235 material.

[0008] The connecting plate at the top of the pressure ring passes through a pin shaft provided at the bottom of the pressure ring suspension rod, and the pin shaft cooperates with a split pin to connect the pressure ring and the pressure ring suspension rod together, and a washer B is sleeved on the pin shaft;

[0009] After the top end of the pressure ring hanger passes through the mounting bracket outside the holding tube, the two ends are respectively locked and fixed on the mounting bracket of the holding tube by nuts A and B. The mounting bracket is provided with an insulating tube B which is sleeved on the outside of the top end of the pressure ring hanger and insulating washers located on the outside of the two ends of the insulating tube B. Washers A are respectively provided between nut A and the insulating washer and between nut B and the insulating washer.

[0010] Preferably, a refractory fiber needle-punched blanket and a protective cover located outside the refractory fiber needle-punched blanket are laid outside the pressure ring to isolate heat flow, high temperature and radiation.

[0011] Preferably, a water pipe assembly for fixing a water cooling pipeline is installed on the inner wall of the lower holding tube, and a pressure ring water inlet pipe and a pressure ring water outlet pipe are provided on the water cooling pipeline, and cooling water or cooling medium is passed to maintain the temperature balance of the electrode holder.

[0012] Preferably, the plurality of conductive copper tubes connected to the copper tile are fixed on the conductive tube hanger outside the lower holding tube after passing through the lower holding tube, so as to stably position and fix the conductive copper tubes.

[0013] Preferably, a steel pipe connected by a pipe joint is provided on the outside of the middle section of the holding tube, and an insulating tube A is coated on the outside of the steel pipe. A steel plate is provided on the outside of the insulating tube A to position it and the steel pipe on the outer wall of the middle section of the holding tube.

[0014] Compared with the prior art, the technical effects and advantages of the utility model are:

[0015] The nickel-iron smelting arc furnace electrode holder provides a tighter and more stable connection than the traditional mechanical fixing method through the combined connection of the pin shaft and the split pin, and the locking fixation of the nut. This helps to maintain long-term stability in high temperature and high pressure environments. The protective effect of the washer B can reduce the wear and corrosion of the pin shaft, and the double fixing effect of the split pin ensures that the pressure ring hanger will not loosen due to thermal expansion or vibration, thereby extending the service life of the equipment.

[0016] The use of insulating tube B and insulating gaskets effectively isolates the heat source, protects the pressure ring hanger outside the holding tube from high temperature, and reduces structural damage caused by heat conduction. The installation method may provide a structure that is easier to maintain because the connecting parts are more fixed and reliable, reducing the need for frequent inspection and replacement of parts.

[0017] In high temperature and high pressure working environment, stable pressure ring installation helps prevent equipment failure, thus improving work safety. By reducing friction and corrosion between the pressure ring and the refractory material, the service life of the refractory material can be extended and the replacement frequency can be reduced. Stable electrode holders help improve the energy efficiency of the submerged arc furnace because the electrode can transfer electrical energy more efficiently and reduce energy loss. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the copper tile installation of the utility model;

[0020] Figure 3 For this utility model Figure 3 Schematic diagram of the structure after the middle protective cover and the refractory fiber needle-punched blanket are removed;

[0021] Figure 4 This is a schematic diagram of the structure of the pin shaft, washer and cotter pin of the utility model;

[0022] Figure 5 This is a structural schematic diagram of the installation of the pressure ring suspension rod of the utility model;

[0023] Figure 6 This is a schematic diagram of the structure of fixing the top end of the pressure ring suspension rod of the utility model;

[0024] Figure 7 It is a structural schematic diagram of the steel pipe of the utility model.

[0025] In the figure: 100, electrode; 1, copper tile; 2, pressure ring; 3, pressure ring hanging rod; 4, copper tile hanging; 5, pressure ring water inlet pipe; 6, pressure ring water outlet pipe; 7, lower holding tube; 8, conductive copper tube; 9, conductive tube hanger; 10, water pipe assembly component; 11, steel pipe; 12, pipe joint; 13, steel plate; 14, insulating tube A; 15, middle section of holding tube; 52, protective cover; 53, refractory fiber needle-punched blanket;

[0026] Nut A; 39. Washer A; 40. Insulating washer; 41. Insulating tube B; 42. Nut B; 43. Pin; 44. Washer B; 45. Split pin. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] The following is combined with Figure 1-7 To further explain this application in detail,

[0029] The embodiment of the present application discloses an electrode holder for a nickel-iron smelting ore-fired furnace, comprising an electrode 100, a holding tube sleeved on the upper part of the electrode 100, a copper tile 1, a pressure ring 2, a conductive copper tube 8 and a water cooling pipeline.

[0030] The holding tube includes a lower holding tube 7, a holding tube middle section 15 and an upper holding tube which are arranged in sequence from bottom to top. The copper tile 1 is located under the lower holding tube 7 and is circumferentially wrapped around the electrode 100. Each copper tile 1 is hung on the lower holding tube 7 through its own copper tile hanger 4. The pressure ring 2 installed on the side of the copper tile 1 is connected to the pressure ring hanger 3.

[0031] A refractory fiber needle blanket 53 and a protective cover 52 located on the outside of the refractory fiber needle blanket 53 are laid on the outside of the pressure ring 2; the refractory fiber needle blanket 53 serves as a heat insulation layer, and the protective cover 52 serves as a protective layer, which isolates the molten metal in the electric arc furnace from high-temperature radiation and heat flow impact on the pressure ring 2, so that the pressure ring can be cooled by cooling water, thereby extending the service life of the electrode 100 holder.

[0032] A water pipe assembly component 10 for fixing the water cooling pipeline is installed on the inner wall of the lower holding tube 7, and a pressure ring water inlet pipe 5 and a pressure ring water outlet pipe 6 are arranged on the water cooling pipeline. The function of the pressure ring water inlet pipe 5 is to provide cooling water or other cooling medium to the pressure ring 2 to maintain the stability and durability of the pressure ring 2 in a high temperature environment. Cooling can prevent the pressure ring 2 from being damaged due to long-term contact with high-temperature materials. The function of the pressure ring water outlet pipe 6 is to take away the high-temperature cooling medium discharged from the pressure ring 2, which helps to maintain the temperature balance of the electrode holder and prevent damage caused by heat accumulation. Several conductive copper tubes 8 connected to the copper tile 1 pass through the lower holding tube 7 and are fixed on the conductive tube hanger 9 on the outside of the lower holding tube 7. The conductive copper tube 8 is the channel for transmitting electrical energy between the electrode 100 and the external power supply, ensuring that the electrical energy can be efficiently transmitted to the electrode 100.

[0033] A steel pipe 11 connected via a pipe joint 12 is disposed outside the middle section 15 of the holding tube. The outer side of the steel pipe 11 is covered with an insulating tube A14. A steel plate 13 is disposed outside the insulating tube A14 to position it and the steel pipe 11 on the outer wall surface of the middle section 15 of the holding tube.

[0034] The main function of the steel plate 13 is to provide a fixed position for the insulating tube A14 and the steel tube 11, ensuring that they fit tightly against the outer wall of the holding tube middle section 15. This can effectively fix the insulating tube A14 and the steel tube 11 outside the holding tube middle section 15, increase the stability of the equipment, prevent displacement or falling off under high temperature and high pressure, and ensure that the electrode holder can work safely and stably during the operation of the submerged arc furnace. At the same time, the fixed position is also convenient for installation and maintenance, improving the reliability of the equipment.

[0035] The connecting plate at the top of the pressure ring 2 passes through a pin 43 which is arranged at the bottom of the pressure ring suspension rod 3, and the pin 43 cooperates with a cotter pin 45 to connect the pressure ring 2 and the pressure ring suspension rod 3 together, and a washer B44 is sleeved on the pin 43.

[0036] The pin 43 passes through the washer B44 and the split pin 45 to connect the bottom of the pressure ring suspension rod 3 with the top of the pressure ring 2. The washer B44 protects the pin 43 from corrosion and wear, and the split pin 45 plays a dual fixing role to ensure that the pressure ring suspension rod 3 will not loosen or fall out.

[0037] After the top end of the pressure ring hanger 3 passes through the mounting bracket outside the holding tube, the two ends are respectively locked and fixed on the mounting bracket of the holding tube by nuts A38 and nuts B42. The mounting bracket is provided with an insulating tube B41 which is sleeved on the outside of the top end of the pressure ring hanger 3 and insulating washers 40 located on the outside of both ends of the insulating tube B41. Washers A39 are respectively provided between the nut A38 and the insulating washer 40 and between the nut B42 and the insulating washer 40.

[0038] These components are threadedly connected and tightened to fix the top end of the pressure ring suspension rod 3 to ensure that the pressure ring suspension rod 3 is fixed and stable at the top position.

[0039] The design and application of the electrode holder of the nickel-iron smelting ore-heating furnace are designed in a reasonable structure, such as the lower holding tube 7, the middle section of the holding tube 15 and the upper holding tube arranged in sequence from bottom to top, and the combination of the copper tile 1 and the pressure ring 2 is used to enhance the stability of the electrode 100, and the high temperature radiation and heat flow impact are blocked by the refractory fiber needle blanket 53 and the protective cover 52, and the electrode 100 is held and conductive by the water pipe assembly assembly, the pressure ring water inlet pipe 2, the pressure ring water outlet pipe 6, the conductive copper pipe 8 and the insulating pipe A14, etc., and the stability of the equipment is increased by fasteners such as steel plates 13 and nuts. In addition, the dual fixing effect of the pin 43, the washer and the cotter pin 45 ensures that the pressure ring hanger will not loosen or fall out. All these components are fixed to the top of the pressure ring hanger 3 by threaded connection and tightening to ensure that the pressure ring hanger 3 is fixed and stable at the top position. The design takes into account various factors such as high temperature, high pressure, corrosion and wear, and aims to improve the service life and reliability of the electrode holder.

[0040] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A nickel-iron smelting ore-fired furnace electrode holder, comprising an electrode (100), a holding tube sleeved on the upper part of the electrode (100), a copper shoe (1), a pressure ring (2), a conductive copper tube (8) and a water cooling pipeline, characterized in that: The holding tube comprises a lower holding tube (7), a holding tube middle section (15) and an upper holding tube which are arranged in sequence from bottom to top; the copper shoe (1) is located below the lower holding tube (7) and is circumferentially wrapped around the electrode (100); each copper shoe (1) is hung on the lower holding tube (7) via its own copper shoe hanger (4); and a pressure ring (2) installed on the side of the copper shoe (1) is connected to a pressure ring hanger (3); The connecting plate at the top of the pressure ring (2) passes through a pin (43) which is arranged at the bottom of the pressure ring suspension rod (3), and the pin (43) cooperates with a cotter pin (45) to connect the pressure ring (2) and the pressure ring suspension rod (3) together, and a washer B (44) is sleeved on the pin (43); After the top end of the pressure ring suspension rod (3) passes through the mounting bracket outside the holding tube, the two ends are respectively locked and fixed on the mounting bracket of the holding tube by nuts A (38) and nuts B (42). The mounting bracket is provided with an insulating tube B (41) sleeved on the outside of the top end of the pressure ring suspension rod (3) and insulating washers (40) located on the outside of both ends of the insulating tube B (41). Washers A (39) are respectively provided between the nut A (38) and the insulating washer (40) and between the nut B (42) and the insulating washer (40).

2. The electrode holder for ferronickel smelting ore-fired furnace according to claim 1, characterized in that: A refractory fiber needle-punched blanket (53) and a protective cover (52) located outside the refractory fiber needle-punched blanket (53) are provided on the outside of the pressure ring (2).

3. The electrode holder for ferronickel smelting ore-fired furnace according to claim 1, characterized in that: A water pipe assembly component (10) for fixing a water cooling pipeline is installed on the inner wall of the lower holding tube (7), and a pressure ring water inlet pipe (5) and a pressure ring water outlet pipe (6) are provided on the water cooling pipeline.

4. The electrode holder for nickel-iron smelting ore-fired furnace according to claim 1, characterized in that: A plurality of conductive copper tubes (8) connected to the copper tile (1) pass through the lower holding tube (7) and are fixed on a conductive tube hanger (9) outside the lower holding tube (7).

5. The electrode holder for nickel-iron smelting ore-fired furnace according to claim 1, characterized in that: The outside of the middle section (15) of the holding tube is provided with a steel pipe (11) connected via a pipe joint (12); the outer side of the steel pipe (11) is covered with an insulating tube A (14); the outer side of the insulating tube A (14) is provided with a steel plate (13) for positioning the insulating tube A (14) and the steel pipe (11) on the outer wall surface of the middle section (15) of the holding tube.

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