CN215930735U

CN215930735U - Device for measuring height of converter bottom

Info

Publication number: CN215930735U
Application number: CN202121371373.1U
Authority: CN
Inventors: 富志生
Original assignee: Gansu Jiu Steel Group Hongxing Iron and Steel Co Ltd
Current assignee: Gansu Jiu Steel Group Hongxing Iron and Steel Co Ltd
Priority date: 2021-06-21
Filing date: 2021-06-21
Publication date: 2022-03-01
Anticipated expiration: 2031-06-21

Abstract

The utility model discloses a device for measuring the height of the bottom of a converter, which comprises a measuring scale and a sliding mechanism, wherein the sliding mechanism comprises a beam pipe and a sliding rod penetrating through the beam pipe, sliding supports are symmetrically arranged at two ends of the sliding rod, the height of each sliding support is 1/2 of the diameter of a converter mouth, rollers are arranged at the bottom of each sliding support, and the measuring scale is erected on the outer wall of the beam pipe. The cross beam pipe can rotate when the sliding support moves, the measuring scale can move along with the rotation of the cross beam pipe by erecting the measuring scale on the cross beam pipe and pushing the handle until the tail end of the measuring scale props against the center of the furnace bottom, the height of the furnace bottom can be calculated by reading the scale value when the measuring scale coincides with the center of the cross beam pipe, and errors caused by remotely reading the scale value of the scale at the furnace mouth are avoided, so that the measuring accuracy is improved, and the measuring scale is suitable for converters with nominal capacity below 150 tons.

Description

Device for measuring height of converter bottom

Technical Field

The utility model belongs to the field of ferrous metallurgy, and particularly relates to a device for measuring the height of a converter bottom.

Background

The converter is the main equipment of modern steelmaking, the converter shape and the main parameters thereof have direct influence on economic and technical indexes such as metal yield, productivity, furnace age and the like of steelmaking production, and whether the maintenance of the converter shape is reasonable or not in the whole furnace service period also relates to whether the smelting process can be smoothly carried out or not. In a converter campaign period, due to the impact force of the oxygen lanceInsufficient nozzle included angle is unreasonable; high position of slag splashing gun, N₂The pressure is small, the physicochemical property of the slag is poor, and the slag remaining amount is too large or too small; unreasonable fettling operation causes the liquid level of the molten pool to rise, the distance between the oxygen lance nozzle and the furnace bottom is increased, and the oxygen jet flow can not drive the molten metal at the bottom of the molten pool to participate in circulation. The furnace bottom rises, the furnace volume ratio is too small, a plurality of inconveniences are brought to production operation, the problems of high cost such as metal consumption and refractory material consumption are solved, and the product quality is easily affected. When the converter bottom rises, if the converter bottom cannot be controlled and eliminated in time, the whole smelting process is influenced, and various unsafe accidents can be caused. The measurement of the height of the furnace bottom is the most intuitive parameter for dynamically mastering the change of the furnace shape, accurately masters the change of the height of the furnace bottom, and timely controls and eliminates the rising of the furnace bottom, so that the accident can be prevented.

The height of the converter bottom of more than 50 tons is more than 5 meters, the temperature in the converter is usually kept above 800 ℃, so that direct measurement cannot be carried out manually, and the measurement must be carried out by means of tools. The special distance measuring instrument is expensive, high in operating cost, complex in measuring procedure, long in measuring time and low in practicability for converters below 150 tons.

Chinese patent (patent number: 201420636648.3) discloses a tool for measuring the height of the converter bottom, Chinese patent (patent number: 201721835576.5) discloses a device for measuring the height of the converter bottom, but the two inventions have no moving bracket, and have the following defects in the using process: the measuring scale is placed at a temperature measuring sampling hole of the fettling frame or the fire damper, the movement is difficult, the furnace bottom height is read out through the scale at the measuring device through the furnace mouth, and the reading error is large because the scale value is read remotely; because no movable support is arranged, the measurement time is long, the tail part of the fettling rod is directly contacted with the furnace bottom, the temperature in the furnace is higher, the tail part of the fettling rod is easy to deform, and the measurement deviation is large. The Chinese patent (patent number: 201921756431.5) also discloses a furnace bottom measuring device, which prevents the problem of easy deformation and bending of the measuring device by water cooling, but has no moving support, the measuring device is placed at the position of a temperature measuring sampling hole of a fire door of a converter, the measuring device is manually pushed to the position of a baffle plate of the measuring device to be attached to the center of the furnace bottom of the converter, the height of the furnace bottom is read out by scales at the measuring device through a furnace mouth, the problem of large reading error exists, and during actual operation, because the measuring device is added with cooling water, the manual pushing is difficult, and the cost for maintaining a cooling water device is high, and the practicability is not high.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a device for measuring the height of the bottom of a converter so as to solve the problems.

In order to achieve the purpose, the utility model adopts the technical scheme that:

the utility model provides a measure converter bottom of a furnace device, includes the measurement scale, still includes slide mechanism, slide mechanism includes the crossbeam pipe and wears to locate the intraductal slide bar of crossbeam, and the slide bar both ends symmetry sets up sliding support, and sliding support's height is 1/2 of converter fire door diameter, and sliding support's bottom sets up the gyro wheel, and the measurement scale erects on the crossbeam pipe outer wall.

In order to further realize the utility model, the outer wall of the beam tube is provided with an annular groove for clamping a measuring scale.

In order to further realize the utility model, the annular groove is positioned at 1/2 of the beam tube, the annular groove and the cross section of the beam tube are concentric circles, and the width of the annular groove is not less than the outer diameter of the measuring scale.

In order to further realize the utility model, the sliding supports are triangular, the vertex angles of the sliding supports are fixedly connected with the sliding rods, the sliding supports are perpendicular to the sliding rods, the two sliding supports are parallel to each other, and the bottom edges of the sliding supports are symmetrically provided with the rollers. The sliding support guarantees the stability of support for triangle-shaped, and the rectangle structure that four gyro wheels are constituteed guarantees sliding mechanism's stability and the flexibility of removal.

In order to further realize the utility model, the roller is a universal roller.

In order to further realize the utility model, one end of the measuring scale is provided with a measuring star, the measuring star is provided with at least 40 scales, and the distance between every two adjacent scales is 10 cm.

In order to further realize the utility model, one end of the measuring scale, which is provided with the measuring star, is provided with a handle.

In order to further realize the utility model, the bottom surface of the annular groove is in an arc shape matched with the outer wall of the measuring scale.

Compared with the prior art, the utility model has the beneficial effects that:

the cross beam pipe can rotate when the sliding support moves, the measuring scale can move along with the rotation of the cross beam pipe by erecting the measuring scale on the cross beam pipe by pushing the handle until the tail end of the measuring scale is propped against the middle of the furnace bottom, the height of the furnace bottom can be measured in a time-saving and labor-saving manner, the measuring scale is prevented from being pushed for a long time, the measuring deviation generated by bending of the measuring device after high temperature is applied to the measuring device is prevented, and meanwhile, the damage of the high temperature to the measuring device is reduced; meanwhile, the sliding support is placed at a relatively fixed position in front of the fire door to play a role in positioning, and the height of the sliding support is 1/2 of the diameter of the converter mouth of the converter, so that the measuring staff can be ensured to be positioned at or close to the central position of the converter; the height of the furnace bottom can be calculated by reading the scale value when the measuring scale coincides with the center of the cross beam pipe, so that the error caused by remotely reading the scale value of the scale at the furnace mouth is avoided, the measuring accuracy is improved, and the method is suitable for the converter with the nominal capacity below 150 tons.

The utility model can realize the accurate positioning of the converter bottom height measurement, save time and labor and achieve the aim of simply, conveniently, quickly and accurately measuring the converter bottom height.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

The reference numerals have the following meanings: 1. a beam tube; 2. a slide bar; 3. a sliding support; 4. a roller; 5. measuring a scale; 6. an annular groove; 7. measuring stars; 8. a handle.

Detailed Description

The utility model is further described with reference to the following figures and detailed description.

As shown in figure 1, the device for measuring the height of the bottom of the converter comprises a measuring scale 5 and a sliding mechanism, wherein the sliding mechanism comprises a beam pipe 1 and a sliding rod 2 penetrating through the beam pipe 1, sliding supports 3 are symmetrically arranged at two ends of the sliding rod 2, the height of each sliding support 3 is 1/2 of the diameter of a converter mouth, rollers 4 are arranged at the bottom of each sliding support 3, and the measuring scale 5 is erected on the outer wall of the beam pipe 1.

And an annular groove 6 is formed in the outer wall of the beam pipe 1 and used for clamping a measuring scale 5.

The annular groove 6 is located at 1/2 of the beam tube 1, the annular groove 6 and the cross section of the beam tube 1 are concentric circles, and the width of the annular groove 6 is not less than the outer diameter of the measuring scale 5.

The sliding supports 3 are triangular, the vertex angles of the sliding supports 3 are fixedly connected with the sliding rods 2, the sliding supports 3 are perpendicular to the sliding rods 2, the two sliding supports 3 are parallel to each other, and the bottom edges of the sliding supports 3 are symmetrically provided with the rollers 4.

The roller 4 is a universal roller.

One end of the measuring scale 5 is provided with a measuring star 7, the measuring star 7 is at least provided with 40 scales, and the distance between every two adjacent scales is 10 cm.

And a handle 8 is arranged at one end of the measuring scale 5, which is provided with the measuring star 7.

The bottom surface of the annular groove 6 is arc-shaped and matched with the outer wall of the measuring scale 5.

For example: the diameter of a furnace bottom and a furnace mouth of a 60-ton converter is 200cm, the height of each sliding rod 2 is 100cm, 3 hollow steel pipes with the diameter of 10cm are respectively welded into triangular sliding

supports

3, 2 universal rollers with lock catches are respectively installed at the bottoms of the sliding supports 3, a hollow steel pipe with the diameter of 5cm is welded between the two sliding supports 3 and serves as the sliding rod 2, the hollow steel pipe with the diameter of 10cm is sleeved outside the sliding rod 2 and serves as a beam pipe 1, and the beam pipe 1 can rotate outside the sliding rod 2.

The original height of the bottom of the 60-ton converter is 600cm, the measuring scale 5 is made of a hollow steel pipe with the diameter of 5cm and the length of 900cm, the measuring star 7 is formed by carving 40 lines with equal intervals at one end of the measuring scale 5, the measuring star 7 is solid round steel welded on the measuring scale 5 and the diameter of 1cm, and adjacent scales are separated by 10 cm.

Before measuring the furnace bottom height, will keep off the fire door and close, promote sliding support 3 to slide mechanism in keeping off fire door temperature measurement thief hole dead ahead, place slide mechanism in crossbeam pipe 1 center-to-furnace mouth center 200cm department, fixed roller 4, locate the annular groove 6 of crossbeam pipe 1 to measurement scale 5 card, the one end that measurement scale 5 did not set up measurement star 8 is just to the furnace mouth.

After the preparation is finished, the converter is forwardly shaken to a position of 90 degrees, the handle 9 is pushed, the measuring scale 5 slightly slides in the annular groove 6 of the beam pipe 1, when the tail end of the measuring scale 5 props against the center of the converter bottom of the converter, the scale value of the overlapping part of the measuring scale 5 and the beam pipe 1 is read out, the scale value of the overlapping part is subtracted from the total length of the measuring scale 5, and then the distance between the center of the beam pipe 1 and the center of a furnace mouth is subtracted, so that the height of the converter bottom can be rapidly and accurately calculated. For a 60 ton converter, for example, the scale value read is 130cm, the hearth height is: 900-.

Claims

1. The utility model provides a measure device of converter bottom of a furnace height, includes the measurement scale, its characterized in that: still include slide mechanism, slide mechanism includes crossbeam pipe (1) and wears to locate slide bar (2) in crossbeam pipe (1), and slide bar (2) both ends symmetry sets up sliding support (3), and the height of sliding support (3) is 1/2 of converter fire door diameter, and the bottom of sliding support (3) sets up gyro wheel (4), and measurement scale (5) erect on crossbeam pipe (1) outer wall.

2. The apparatus for measuring the floor height of a converter according to claim 1, wherein: the outer wall of the beam pipe (1) is provided with an annular groove (6) for clamping a measuring scale (5).

3. The apparatus for measuring the floor height of a converter according to claim 2, wherein: the annular groove (6) is located at 1/2 of the beam pipe (1), the cross sections of the annular groove (6) and the beam pipe (1) are concentric circles, and the width of the annular groove (6) is not smaller than the outer diameter of the measuring scale (5).

4. The apparatus for measuring the floor height of a converter according to claim 3, wherein: the sliding support (3) is triangular, the vertex angle of the sliding support (3) is fixedly connected with the sliding rod (2), the sliding support (3) is perpendicular to the sliding rod (2), the two sliding supports (3) are parallel to each other, and the rollers (4) are symmetrically arranged on the bottom side of the sliding support (3).

5. The apparatus for measuring the floor height of a converter according to claim 4, wherein: the roller (4) is a universal roller.

6. The apparatus for measuring the floor height of a converter according to claim 5, wherein: one end of the measuring scale (5) is provided with a measuring star (7), the measuring star (7) is at least provided with 40 scales, and the distance between every two adjacent scales is 10 cm.

7. The apparatus for measuring the floor height of a converter according to claim 6, wherein: and a handle (8) is arranged at one end of the measuring scale (5) provided with the measuring star (7).

8. The apparatus for measuring the floor height of a converter according to claim 7, wherein: the bottom surface of the annular groove (6) is arc-shaped and matched with the outer wall of the measuring scale (5).