CN219409790U - Quick discharge electrode device of LF refining furnace - Google Patents

Abstract

The utility model relates to a quick discharge electrode device of an LF refining furnace, belonging to the technical field of steelmaking refining furnace equipment in the metallurgical industry. The technical proposal is as follows: the electrode (10) is fixed on the electrode cross arm (1) through an electrode clamp (3), and the electrode lifting hydraulic cylinder (2) is in driving connection with the electrode cross arm (1); an electrode cross arm travel upper limit (8.1), an electrode cross arm discharge upper limit (8.2) and an electrode cross arm travel lower limit (8.3) which are matched with the electrode cross arm (1) are arranged on the limit support rod (12); the ladle car (5) is arranged on a ladle lane rail (11), and a ladle (13) matched with the electrode (10) and the electrode supporting small platform (6) are arranged on the ladle car (5). The beneficial effects of the utility model are as follows: the time of discharging electrodes can be reduced, the electrode falling accident during discharging electrodes is avoided, operators do not need to operate the upper electrode cross arm and the lower electrode cross arm during discharging electrodes, and the risk of falling injury and scalding is avoided.

Description

Quick discharge electrode device of LF refining furnace

Technical Field

The utility model relates to a quick discharge electrode device of an LF refining furnace, belonging to the technical field of steelmaking refining furnace equipment in the metallurgical industry.

Background

LF refining furnace is the most common external refining means in metallurgical industry, and mainly relies on graphite electrodes to heat and raise the temperature and remove slag of molten steel in ladle. The electrode is fixed on the electrode cross arm through the electrode clamp and the electrode clamp hydraulic cylinder, and the electrode cross arm is driven by the electrode lifting hydraulic cylinder to lift, as shown in figures 1 and 2.

In the process of heating molten steel in a ladle by a graphite electrode, the graphite electrode is continuously worn, and an electrode cross arm is driven by an electrode lifting hydraulic cylinder to descend so as to keep heating the molten steel; when the electrode is worn to a certain extent, the electrode cross arm is lowered to the lower limit of the travel and still cannot contact steel slag, so that the steel slag cannot be heated, at the moment, the electrode is required to be moved out of the ladle to conduct electrode discharging operation, and then the electrode is moved into the ladle to continue heating.

The traditional discharge electrode operation adopts a cantilever crane to hoist the electrode to be lowered, then an electrode clamp is opened, the cantilever crane is operated to descend, the electrode to be lowered is put to a proper length, and finally the electrode clamp is clamped to complete the whole discharge electrode operation, so that the discharge electrode has the following three defects:

(1) The operation needs to be completed by means of cantilever crane, and the time is long, so that the production rhythm is influenced;

(2) The electrode clamp is influenced by human factors, and the electrode clamp is opened and is not a phase electrode to be lowered, so that the electrode is dropped and wasted, the production is influenced when serious, and accidents such as furnace return and casting breaking are caused;

(3) The cantilever crane is connected with the electrode by a hanging plug with a screw, a person is required to put the electrode cross arm when the electrode is discharged every time, the hanging plug is screwed with the electrode screw, the person is put on the electrode arm again after the electrode is put off to screw the hanging plug, the person repeatedly puts the electrode arm up and down to have larger risk of falling injury, and meanwhile, the electrode is in a hot state in the production process and is easy to scald.

Disclosure of Invention

The utility model aims to provide a rapid electrode discharging device of an LF refining furnace, which can reduce electrode discharging time, avoid electrode falling accidents during electrode discharging and solve the problems in the background technology.

The technical scheme of the utility model is as follows:

the quick discharging electrode device for the LF refining furnace comprises an electrode cross arm, an electrode lifting hydraulic cylinder, an electrode clamp, a ladle car, an electrode supporting small platform, an electrode, a ladle lane rail, a limiting support rod and a ladle, wherein the electrode is fixed on the electrode cross arm through the electrode clamp, and the electrode lifting hydraulic cylinder is in driving connection with the electrode cross arm; the limit support rod is provided with an electrode cross arm travel upper limit matched with the electrode cross arm, an electrode cross arm discharge upper limit and an electrode cross arm travel lower limit; the ladle car is arranged on the ladle lane rail, and is provided with a ladle matched with the electrode and an electrode supporting small platform.

The electrode supporting small platform is provided with a pressure sensing module matched with the electrode.

High-temperature-resistant asbestos cloth is laid on the electrode supporting small platform.

The electrode supporting small platform is fixed on the ladle car through a bracket.

The ladle car soft blowing limit, the ladle car discharge electrode position limit and the ladle car processing limit are arranged on the ladle car lane rail.

The beneficial effects of the utility model are as follows:

a. the device has the advantages of simple structure, low cost, simple operation and strong practicability.

b. Auxiliary equipment such as a cantilever crane is not used in the electrode discharging process, personnel are not required to mount and dismount an electrode cross arm, and the electrode discharging time is greatly reduced; the electrode discharging process is changed from a cantilever crane to a platform supporting electrode, when the electrode discharging device is used, the electrode can be placed on the supporting platform, and the electrode clamp opening process can not cause the electrode to drop if personnel operation errors occur; the personnel do not operate the upper electrode cross arm and the lower electrode cross arm in the electrode discharging process, and the risk of falling injury and scalding is avoided.

Drawings

Fig. 1 is a front view of an electrode mounting structure of an LF furnace;

FIG. 2 is a sectional view of an LF furnace electrode mounting structure;

FIG. 3 is a front view of the operation of the discharge electrode of the present utility model;

FIG. 4 is a side view of the operation of the discharge electrode of the present utility model;

FIG. 5 is a schematic diagram of a ladle treatment station;

FIG. 6 is a top view of an electrode support platform;

in the figure: the steel ladle car comprises an electrode cross arm 1, an electrode lifting hydraulic cylinder 2, an electrode clamp 3, an electrode clamp hydraulic cylinder 4, a steel ladle car 5, an electrode supporting small platform 6, a steel ladle car soft blowing limit 7.1, a steel ladle car discharging electrode position limit 7.2, a steel ladle car treatment limit 7.3, an electrode cross arm travel upper limit 8.1, an electrode cross arm discharging upper limit 8.2, an electrode cross arm travel lower limit 8.3, a refining furnace cover 9, an electrode 10, a steel ladle lane rail 11, a limit supporting rod 12, a steel ladle 13, a pressure sensing block 14 and a support 15.

Description of the embodiments

The utility model is further illustrated by way of example with reference to the accompanying drawings.

Referring to fig. 1-6, a quick discharging electrode device of an LF refining furnace comprises an electrode cross arm 1, an electrode lifting hydraulic cylinder 2, an electrode clamp 3, a ladle car 5, an electrode supporting small platform 6, an electrode 10, a ladle lane rail 11, a limit supporting rod 12 and a ladle 13, wherein the electrode 10 is fixed on the electrode cross arm 1 through the electrode clamp 3, and the electrode lifting hydraulic cylinder 2 is in driving connection with the electrode cross arm 1; the limit support rod 12 is provided with an electrode cross arm travel upper limit 8.1, an electrode cross arm discharge electrode upper limit 8.2 and an electrode cross arm travel lower limit 8.3 which are matched with the electrode cross arm 1; the ladle car 5 is arranged on a ladle lane rail 11, and a ladle 13 matched with the electrode 10 and the electrode supporting small platform 6 are arranged on the ladle car 5.

In this embodiment, referring to fig. 1 to 6, the electrode supporting small platform 6 is fixed on a bracket 15, and the bracket 15 is connected to the buggy ladle 5 by high-strength bolts or welded. The electrode supporting small platform 6 adopts a common steel plate as a supporting surface of the supporting platform, the supporting surface is provided with three pressure sensing modules 14, the positions of the three pressure sensing modules respectively correspond to the supporting points of the three electrodes of the discharge electrode position, the pressure sensing modules are used for protecting the electrodes and the supporting surface, and a layer of high-temperature-resistant asbestos cloth is paved on the supporting surface.

The ladle car track 11 is provided with a ladle car soft blowing limit 7.1, a ladle car discharge electrode position limit 7.2 and a ladle car treatment limit 7.3.

The soft blowing limit of the buggy ladle 7.1, the discharging electrode position limit of the buggy ladle 7.2 and the processing limit of the buggy ladle 7.3, the upper limit of the electrode cross arm travel 8.1, the upper limit of the electrode cross arm discharging electrode 8.2 and the lower limit of the electrode cross arm travel 8.3 are common mechanical limit or induction limit.

The using method comprises the following steps:

during normal production, the ladle car firstly receives the ladle at the soft blowing position, the ladle car is driven to the treatment position after receiving the ladle, then the furnace cover of the refining furnace is lowered to the ladle edge, then power can be transmitted, the electrode transverse arm is lowered, and the electrode contacts with the steel slag to realize the function of heating molten steel, as shown in figure 5.

The discharge electrode operation is performed when the electrode is consumed to some extent. Firstly, confirming that an electrode is located at the upper limit of a travel, a furnace cover is located at the upper limit, and driving the buggy ladle to a discharge electrode position, wherein a buggy ladle supporting small platform is located right below the electrode, as shown in fig. 4. The electrode cross arm 2 is operated to descend until the lower end of the electrode falls on the small supporting platform 6; then opening the electrode clamp 3, and operating the electrode cross arm 2 to rise to a proper height; in order to avoid the overlong electrode and the steel ladle breaking of the electrode when the ladle car enters the treatment position, the lifting height of the electrode cross arm does not exceed the limit of 8.2 on the discharge electrode of the electrode cross arm, and finally the electrode clamp 3 is clamped, so that the discharge electrode operation of the current phase electrode is completed. Repeating the above operation as required to lower other electrodes.

After the electrodes are completely put, the electrodes are lifted to the upper limit of the travel of the electrode cross arm by 8.1, the furnace cover is lifted to the upper limit, and the ladle car is started to a treatment position or a soft blowing position according to the requirement.

Claims (5)

1. An LF refining furnace quick discharge electrode device which is characterized in that: the electrode lifting hydraulic cylinder (2) is in driving connection with the electrode cross arm (1) through the electrode clamp (3); an electrode cross arm travel upper limit (8.1), an electrode cross arm discharge upper limit (8.2) and an electrode cross arm travel lower limit (8.3) which are matched with the electrode cross arm (1) are arranged on the limit support rod (12); the ladle car (5) is arranged on a ladle lane rail (11), and a ladle (13) matched with the electrode (10) and the electrode supporting small platform (6) are arranged on the ladle car (5).

2. The LF refining furnace rapid discharge electrode device of claim 1, wherein: the electrode supporting small platform (6) is provided with a pressure sensing module (14) matched with the electrode (10).

3. The rapid discharge electrode device of an LF refining furnace according to claim 2, wherein: high-temperature-resistant asbestos cloth is paved on the electrode supporting small platform (6).

4. A rapid discharge electrode device for an LF refining furnace according to claim 3, wherein: the electrode supporting small platform (6) is fixed on the ladle car (5) through a bracket (15).

5. The LF refining furnace rapid discharge electrode device of claim 1, wherein: the steel ladle lane rail (11) is provided with a steel ladle car soft blowing limit (7.1), a steel ladle car discharging electrode position limit (7.2) and a steel ladle car processing limit (7.3).