KR101350465B1 - Apparatus for monitoring weight of converter - Google Patents

Abstract

Provided is an apparatus for measuring the weight of a converter which includes: a first weight sensor which is positioned on the upper part of the shaft of a converter, and which is capable of sensing weight changes; a second weight sensor which is positioned on the lower part of the shaft of a converter, and which is capable of sensing weight changes; and a weight calculating unit capable of receiving weight information from the first and second weight sensors and measuring the weight of the converter. Despite the change in the center of mass of the converter, a precise measuring of the weight of the converter is possible by minimizing errors.

Description

Converter weighing device {APPARATUS FOR MONITORING WEIGHT OF CONVERTER}

The present invention is a device for measuring the weight of the converter, in more detail, in the case that the converter is tilted, in order to accurately detect the change in the weight of the converter, by measuring the weight at the top and bottom of the shaft of the converter, Field of the Invention The present invention relates to a converter gravimetric apparatus for accurately measuring the weight of a converter despite a change in its center of gravity.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a view of a converter and a facility around a converter in which a converter weighing apparatus according to the present invention is installed.

In general, the converter 1 is made of a steel plate of 70mm to 90mm, the inside is made of a refractory. The converter 1 is composed of a non-steering shaft 5 and a tilting shaft 6, as shown in FIG. 1, and the tilting shaft 5 is rotated by the tilting motor 3 to turn the converter 1 on. You will be involved in tilting.

The converter 1 is inclined by the rotational force transmitted from the tilting motor 3, and the inside of the converter 1 is charged with the main raw material, ladle molten steel, slag coating, and the like. Various subsidiary materials and coating agents, etc. are weighed in through the subsidiary material input hopper 4, and the blowing operation of blowing oxygen through the lance 2 located above the converter 1 is performed.

Each of the materials introduced into the converter (1) should be mixed with a constant mass ratio of each other, and the material injected into the converter (1) must discharge only a specific mass to meet a predetermined mass standard. There was a challenge to accurately measure the mass of c.

As a technique for accurately measuring the mass of the converter 1, there is a Korean registered patent (registration number: 10-0616137). The registered patent was a technology for detecting a mass change of the converter 1 by attaching a sensor to measure the mass only at the lower portion of the tilting shaft and the non-tilting shaft of the converter, but as the converter 1 is tilted, dynamic load is generated instead of static load. Therefore, the weight hunting is severe, the center of gravity changes due to the tilting of the converter (1), thereby causing a large error in detecting the change in the weight of the converter (1).

Therefore, despite the change in the center of gravity of the converter 1 as the converter 1 is tilted, there is a need for a technique capable of accurately measuring the mass of the converter 1.

The converter weighing apparatus according to the present invention has been devised to solve the conventional problems as described above, and has the following problems.

First, in spite of the change in the center of gravity that occurs during tilting of the converter, it is intended to provide a converter weighing apparatus that minimizes the mass error of the converter.

Second, to minimize the change in the center of gravity of the converter due to the tilting of the converter, to provide a weighing apparatus of the converter.

The solution of the present invention is not limited to those mentioned above, and other solutions not mentioned can be clearly understood by those skilled in the art from the following description.

Converter weight measuring apparatus according to the present invention has the following problem solving means for the problem to be solved above.

The converter weighing apparatus according to the present invention is a device for measuring the weight of the converter, the first weight sensor is located on the top of the shaft of the converter to sense the change in weight; A second weight sensor positioned below the shaft of the converter to sense a change in weight; And a weight calculator configured to receive weight information from the first weight sensor and the second weight sensor to measure the weight of the converter.

The second weight sensor of the converter weighing apparatus according to the present invention is located in the shaft lower in the direction in which the converter is tilted front sensor for detecting the weight change of the converter; A rear sensor positioned below the direction opposite to the direction in which the converter is tilted to sense a weight change of the converter; And a load calculator configured to measure the weight of the converter by averaging the weights sensed by the front sensor and the rear oath.

Converter weight measuring apparatus according to the present invention is located inside the converter temperature sensor unit for measuring the temperature of the converter; A tilt motor connected to the shaft of the converter to rotate the shaft of the converter; And a motor controller configured to receive the temperature of the converter from the temperature sensor and control the tilt motor according to the temperature of the converter.

The converter weighing apparatus according to the present invention having the above configuration has the following effects.

First, the weight sensors located at the top and bottom of the shaft of the converter provide the effect of accurately measuring the weight of the converter by minimizing the error despite the change in the center of gravity of the converter.

Second, it detects the temperature inside the converter and adjusts the rotational speed of the converter, to provide a converter weight measuring device to minimize the change in the center of gravity.

The effects of the present invention are not limited to those mentioned above, and other effects not mentioned can be clearly understood by those skilled in the art from the following description.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a view of a converter and a facility around a converter in which a converter weighing apparatus according to the present invention is installed.
Figure 2 is a side cross-sectional view and front view showing a preferred embodiment of the converter weighing apparatus according to the present invention.
Figure 3 is a side cross-sectional view showing another embodiment of the converter weighing apparatus according to the present invention.

The converter weighing apparatus according to the present invention may be modified in various ways and may have various embodiments. Specific embodiments are illustrated in the drawings and described in detail in the detailed description. It should be understood, however, that the invention is not intended to be limited to the particular embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

Hereinafter, with reference to the drawings, it will be described in detail the converter weighing apparatus according to the present invention.

Figure 2 is a side cross-sectional view and front view showing a preferred embodiment of the converter weighing apparatus according to the present invention. Figure 3 is a side cross-sectional view showing another embodiment of the converter weighing apparatus according to the present invention.

The converter weighing apparatus according to the present invention includes a first weight sensor 20a; Second weight sensor 20b; And a weight calculator (not shown).

As shown in FIG. 2, the first weight sensor 20a is positioned above the converter shaft to sense a change in weight. When the weight of the converter 1 increases, the pressure decreases as the first weight sensor 20a is tensioned. On the other hand, when the weight of the converter 1 decreases, the first weight sensor 20a is relatively compressed to increase the pressure.

On the contrary, the second weight sensor 20b is located under the converter shaft to detect the change in the weight of the converter 1, and when the weight of the converter 10 increases, the second weight sensor 20b is compressed. Pressure increases. On the other hand, when the weight of the converter 1 decreases, the second weight sensor 20b is relatively stretched to decrease the pressure.

The first weight sensor 20a and the second weight sensor 20b are sufficient as long as they are generally available in the industry, and specifically, a weight sensing sensor as shown in FIGS. 5 to 7 of Patent 10-0616137. May be used, but is not necessarily limited thereto.

The first weight sensor 20a and the second weight sensor 20b are included in the bearing housing 8 as shown in FIG. 2, and are preferably installed to be in close contact with the outer circumference of the bearing.

The weight calculator receives the weight path from the first weight sensor 20a and the second weight sensor 20b to measure the weight of the converter.

More specifically, the weight of the converter 1 may be measured by a simple arithmetic average of the weight measured by the first weight sensor 20a and the weight value measured by the second weight sensor 20b. For example, if the pressure is measured in 2000kg in the first weight sensor 20a and the tensile force is measured in 2010kg in the second weight sensor 20b, the arithmetic mean value of the two is 2005kg and 2005kg is the converter measured by the weight calculation unit ( It becomes the weight of 1).

According to another embodiment of the converter weighing apparatus according to the present invention, the second weight sensor 20b includes a front sensor 21a; Rear sensor 21b; And a load calculator (not shown).

The front sensor 21a is located under the shaft in the direction in which the converter 1 is inclined (in the direction of the bent arrow in FIG. 3), as shown in FIG. 3, to measure the weight applied by the converter 1 downward. do.

As shown in FIG. 3, the rear sensor 21b is positioned below the opposite direction to the direction in which the converter 1 is inclined, thereby measuring the weight applied by the converter 1 downward.

The load is applied to the shafts 5 and 6 before the converter 1 is inclined, and when the converter 1 is tilted, the center of gravity is inclined toward the direction in which the converter 1 is rotated. Therefore, the second weight sensor 20b located below the converter 1 has a difference in the weight measured between being located below the rotating direction of the converter 1 and being located opposite to the rotating direction. Will occur.

Therefore, in order to minimize the occurrence of errors due to the difference in these measured weights, the lower part of the shaft in the direction in which the converter is tilted (the curved arrow in FIG. 3) and the lower part of the direction opposite to the direction in which the converter is tilted, Make sure to detect weight changes.

The load calculator receives the weights measured by the two front sensors 21a and the rear sensors 21b located at the lower part of the shaft, and arithmetic averages the weights measured by the front sensors 21a and the rear sensors 21b.

That is, if the weight measured by the front sensor 21a is 2010 ton and the weight measured by the rear sensor 21b is 1990 ton, the weight measured at the lower part of the converter 1 calculated by the load calculation unit is measured. The total weight is 2000 tons.

As a result, the weight of 2000 tons calculated by the load calculator becomes the weight measured by the second weight sensor.

In accordance with the present invention, a second embodiment of a converter weighing apparatus includes a temperature sensor unit (not shown); Tilt motor 3; And a motor controller (not shown).

The temperature sensor part is located inside the converter 1 and measures the temperature inside the converter 1. The temperature sensor is sufficient if the thermometer is commonly used in the industry, in consideration of the temperature range of the converter (1), it is preferable that the thermometer can cover the temperature range to be measured.

However, the temperature sensor unit should be able to transmit the measured temperature information to another module, it should be capable of data communication by wire or wireless.

The tilt motor 3 is connected to the tilt shaft 6 of the converter 1, as shown in FIG. 1, and rotates the shaft 6 of the converter to tilt the converter 1. Since the tilting motor 3 is a general tilting motor used when tilting the converter 3, detailed description thereof will be omitted.

The motor controller receives temperature information of the converter from the temperature sensor unit. Thereafter, the tilt motor is controlled according to the temperature of the converter. Specifically, when the temperature is high, and the viscosity of the molten material is low in the converter 1, the tilt motor 3 may be adjusted so that the rotation of the converter 1 is fast. On the contrary, when the viscosity of molten material is high inside the converter 1, it is necessary to tilt the converter 1 slowly, and the tilt motor 3 is adjusted so that the converter 1 may incline slowly. This is because a sharp change in the center of gravity occurs when the converter 1 with the low viscosity molten material is sharply tilted. Another role of the controller is to calculate the weight of the pure contents in the converter excluding the weight of the converter vessel (transformer shell, refractory, cooling device, etc.) out of 2000 tons calculated by the arithmetic average of the load calculator. It is calculated by excluding the container weight. In other words, if the 2000 ton container weight is 1700 tons, the pure content in the converter is 300 tons. The container weight of the converter refers to the weight measured after total exclusion of the contents in the converter, and the weight of the container is measured and managed periodically (for example, once / three days).

As used herein, the singular " include "should be understood to include a plurality of representations unless the context clearly dictates otherwise, and the terms" comprises & , Parts or combinations thereof, and does not preclude the presence or addition of one or more other features, integers, steps, components, components, or combinations thereof.

The scope of the present invention is defined by the claims, the parentheses used in the claims are not used for optional limitation but are used for the definite components and the description in parentheses is also interpreted as an essential component .

1: Converter
2: lance
3: tilt motor
4: subsidiary feed hopper
5: non-shaft shaft
6: tilt shaft
7: bearing
8: Bearing housing
20: weight sensor
21a: front sensor
21b: rear sensor

Claims (3)

delete In the apparatus for measuring the weight of the converter,
A first weight sensor positioned above the shaft of the converter for sensing a change in weight;
A second weight sensor positioned below the shaft of the converter to sense a change in weight; And
Including a weight calculation unit for receiving the weight information from the first weight sensor and the second weight sensor to measure the weight of the converter,
The second weight sensor,
A front sensor positioned below the shaft in a direction in which the converter is tilted to sense a change in weight of the converter;
A rear sensor positioned below the direction opposite to the direction in which the converter is tilted to sense a change in weight of the converter; And
Converter weight measuring apparatus comprising a load calculation unit for measuring the weight of the converter by averaging the weight detected by the front sensor and the back oath.
The method of claim 2, wherein the converter weighing device,
A temperature sensor unit positioned inside the converter to measure a temperature of the converter;
A tilt motor connected to the shaft of the converter to rotate the shaft of the converter; And
And a motor controller configured to receive the temperature of the converter from the temperature sensor unit and to control the tilt motor according to the temperature of the converter.

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