JPH05126474A - Method and device for measuring volume of sucked air by sintering machine - Google Patents

Abstract

PURPOSE:To measure the distribution of the volume of sucked air in a sintering head with a low cost by a method wherein an air box, equipped with an air volume meter, is installed on a sintering head at the starting position of measurement of the volume of sucked air and the volume of sucked air is measured while moving the head to an ore discharging unit, then, the air box is lifted and recovered after finishing the measurement to return it to the starting position of measurement of the amount of sucked air. CONSTITUTION:An air box 16, equipped with an air volume meter 25, is set on a sintering head 2 by a hook 23 on a self-propelling truck 17 positioned at the starting position A of measurement of the amount of sucked air. Then, the measurement of the volume of sucked air of the sintering head is started. The measurement of air volume is effected while running the self-propelling truck 17 toward the measuring position B of sucked air. When the truck has arrived at the finishing position B of measurement of air volume and a limit switch is operated, the air box 16 is released from the hook 23 to recover it and the self-propelling truck 17 is run reversely to the air volume measuring position A to stop and wait by the operation of the limit switch. Thereafter, measuring cycle is repeated to continue the measurement of the amount of sucked air in the sintering head.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and apparatus for measuring the suction air volume of a sintering machine.

[0002]

2. Description of the Related Art In a sintering process, a raw material charging device installed under a drum feeder located at a sintering machine ore feeding section charges compounded raw materials onto a sinter machine pallet. After that, the surface layer of the raw material is ignited in the ignition furnace, and while the pallet is moving to the mine, the main exhaust fan draws in the atmosphere through the wind box located below the pallet, and the sintering reaction progresses. Mining is produced. Therefore, in the sintering process, the suctioned air volume is an important factor for grasping the operating condition, so that it becomes possible to improve the operation control accuracy if the value can be continuously measured.

However, the amount of suction air in the sintering process depends on the mixing raw material particle size, the mixing raw material water content, the mixing raw material charging density to the sintering machine pallet, the particle size segregation of the mixing raw material in the sintering bed layer high direction, and the input heat amount mixing ratio. , The rate of sintering reaction (production rate), the position of the firing completion point, and other operating factors. In addition, the air volume of the main exhauster is the amount of suction air of the sintering bed and the amount of air leaked from the gap between the wind box and the pallet or the break hole on the sintering machine facility such as the wind leg (generally,
This accounts for 30 to 50% of the main exhaust air volume). Therefore, even if the correlation between the main exhaust air flow rate and the operation factor is calculated by a statistical method and adopted as the operation control means of the sintering process, the main exhaust air flow rate contributes to the sintering reaction as described above. Since it is not an essential air volume, it was difficult to establish proper air volume control in actual operation. In order to solve these disadvantages, Japanese Patent Publication No. 57-179
There is a method and apparatus for continuously measuring the suction air volume distribution of the sintering bed described in Japanese Patent No. 27.

As shown in FIG. 4, a suction air flow rate measuring device comprising a traveling carriage 11 to which a wind box 6 having a flow meter and having open upper and lower portions is movably attached is used. Fix it on the pallet 1 at the measurement start position,
A measurement method of measuring the suction air volume while synchronizing with the pallet speed, releasing the fixation between the measuring device and the pallet 1 at the suction air volume measurement completion position, and controlling so as to return to the suction air volume measurement position, and a sintering machine A dispersion plate, a filter, and a rectifying plate are attached to the upper open part of the wind box 6 which is directly placed and fixed on the pallet layer, and a velocity meter for measuring the flow velocity of the suction air flowing in the wind box 6 Installed in the upper wind box,
This is a measuring device composed of a traveling carriage 11 to which this is movably attached.

[0005]

[Problems to be Solved by the Invention] Japanese Patent Publication No. 57-1792
The technique described in Japanese Patent Publication No. 7 has a problem to be solved. That is, as shown in FIG. 4, the traveling carriage 11 has a gate-like shape that covers the pallet 1, and has drive devices 14 and wheels 13 for traveling the carriage on both legs thereof, a fixing device 12 for the carriage and the pallet,
A rail 9 and a drive device 1 for moving a wind box 6 with a flow meter in the pallet width direction at both ends of the upper plane of the traveling carriage.
0, and since the trolley traveling rail 15 is required outside the pallet traveling rail 4, the ancillary equipment of the air flow meter becomes very large and its structure becomes complicated, and the ancillary equipment of the air flow meter is manufactured. The cost has become very expensive.

The present invention aims to advantageously solve the above-mentioned problems of the prior art.

[0007]

According to the measuring method of the present invention, a wind box equipped with an air flow meter is installed on a sintering bed at a suction air volume measurement start position, and while the wind box moves to a mine ore section. Performing measurement of the suction air volume of the sintering machine, hoisting and collecting the air box at the suction air volume measurement completion position, is a method of measuring the suction air volume of the sintering machine, which is returned to the suction air volume measurement start position, The measuring device of the present invention is a gate-shaped self-propelled trolley that runs on a trolley traveling rail by laying a trolley traveling rail outside the pallet traveling rail between the heat retaining furnace of the sintering machine and the mine ore hood. This self-propelled trolley has a hook that can move up and down by engaging with the wind box at the top, and the self-propelled trolley detection in the self-propelled trolley self-propelled section on the ignition furnace and mine side hood side It is a measuring device for sucked air volume of a sintering machine, which is provided with a limit switch for use.

[0008]

The present invention, as shown in FIG. 1 (a),
The wind box 16 with an air flow meter is installed on the sintering bed by the hook 23 of the self-propelled carriage 17 at the sintering bed suction air volume measurement start position A, and at the same time, the measurement of the sintering bed suction air volume is started. After installing the wind box 16 at the measurement start position A, the self-propelled carriage 17 moves to the sintering bed suction air volume measurement completion position B by self-propelling as shown in FIGS. 1 (b) and 1 (c). The limit switch 18 is activated to stand by. When the wind box 16 reaches the measurement completion position B, the wind box 16 is collected by the hook 23 of the self-propelled carriage 17, and then the self-propelled carriage 17 is collected.
Reversely travels to move to the measurement start position A, and the limit switch 19 operates to stand by to complete one cycle of the sintering bed suction air volume measurement. After that, the above-described measurement cycle is repeated to continue measuring the suction air volume of the sintering bed.

FIG. 2 shows the details of the measuring device. The self-propelled carriage 17 has wheels 13 and a drive device 14 on both legs thereof, and has an elevating device 22 and a hook 23 on an upper portion thereof, and the carriage traveling rail 15 is provided outside the pallet traveling rail 4.
have. Measurement start position A or measurement completion position B
At this time, the lifting device 22 is actuated to operate the hook 2
3 can be moved up and down to install the wind box 16 on the sintering bed or to collect it from the sintering bed.

FIG. 3 shows details of the wind box 16. The wind box 16 has an air flow meter 25 and an arm 26 for being suspended by a hook 23, and a signal processing and transmitting device 27 for processing and transmitting a signal measured by the air flow meter 25 is also attached to the lower part of the wind box 16. Has been. The signal processing and transmitting device 27 has a structure in which a battery power source is incorporated.

[0011]

As described above, according to the present invention, it is possible to measure the suction air volume distribution of the sintering bed at a lower cost than the prior art.

[Brief description of drawings]

FIG. 1 is a diagram showing a measuring method of the present invention.

FIG. 2 is a diagram showing details of the measuring apparatus of the present invention.

FIG. 3 is a diagram showing details of a wind box of the measuring apparatus of the present invention.

FIG. 4 is a diagram showing a conventional measurement technique.

[Explanation of symbols]

 1 Pallet 2 Sintered Bed 3 Wind Box 4 Pallet Traveling Rail 6 Wind Box 9 Rail 10 Driving Device 11 Traveling Vehicle 12 Fixing Device 13 Wheels 14 Driving Device 15 Vehicle Running Rail 16 Wind Box 17 Self-propelled Vehicle 18 Limit Switch 19 Limit Switch 20 Heat-retaining furnace 21 Exhaust mine hood 22 Lifting device 23 Hook 25 Air flow meter 26 Arm 27 Signal processing and transmitting device

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Masahiro Toki 1 Kimitsu, Kimitsu-shi, Chiba Nippon Steel Co., Ltd. Inside the Kimitsu Works (72) Inventor Akira Harada 1 Kimitsu, Chiba Prefecture Kimitsu, Nippon Steel Corporation Inside the Steel Works (72) Inventor Toshihiro Takahashi 1 Kimitsu, Kimitsu City, Chiba Shin Nippon Steel Co., Ltd. Inside the Kimitsu Works

Claims (2)

[Claims] 1. A wind box equipped with an air flow meter is installed on a sintering bed at a suction air flow rate measurement start position, and the suction air volume of the sintering machine is measured while the air box moves to the mine ore section. A method for measuring the suction air volume of a sintering machine, which comprises lifting and collecting the wind box at a suction air volume measurement completion position, and returning to the suction air volume measurement start position. 2. A truck traveling rail is laid outside the pallet traveling rail between the heat retaining furnace of the sintering machine and the mine ore hood,
It has a gate-shaped self-propelled bogie that runs on the bogie running rail,
This self-propelled trolley has a hook that can be moved up and down by engaging with the wind box at the top, and a self-propelled trolley detection limit switch is provided in the self-propelled trolley self-propelled section on the ignition furnace and the mine side hood side. A device for measuring the suctioned air volume of a sintering machine, which is provided.