JPH052588Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a device for measuring the height of charged coal, and more specifically, to a device for highly accurately measuring the height of coal charged in a coking chamber of a coke oven.

[Conventional technology]

What is the charging coal height and firing time in a coke oven?
There is a considerable correlation, so if the charging coal height is precisely controlled, the variation in firing time can be greatly reduced, which in turn leads to a reduction in the amount of heat required for dry distillation. However, the temperature inside the carbonization chamber immediately after charging is 800 to 1000.
℃, and pressure fluctuations are severe due to the effects of generated gas. Therefore, in order to accurately know the height of charged coal, it was necessary to input a straight line from the charging lid of the coking chamber and calculate it from the measured value when it was coaled. Since this method is dangerous and inefficient, automatic measurement methods have also been prototyped.

Examples of such automatic measurement methods include:
The sounding method calculates the coal height by lowering a wire with a weight down from the charging port and calculating the coal height by the stroke until the load changes on the surface to be measured.
There is a micro method that calculates distance by receiving waves reflected from the surface to be measured.

Furthermore, as a method for indirect measurement, a constant weight coal charging method has been proposed in which the weight of coal is measured in a hopper of a charging vehicle and a fixed weight of coal is charged.

[Problem that the invention attempts to solve]

However, the sounding method has poor measurement accuracy due to sinking of the weight and thermal expansion, and also has problems with the life of the wire. The microwave method has not been put into practical use because the environment around the measuring device is limited and it is difficult to select the installation location.

Furthermore, the constant weight coal charging method has the disadvantage that it cannot follow changes in bulk density because it is an indirect measurement.

In view of the current situation, the present invention provides a device that can automatically, precisely, and quickly directly measure the height of charged coal in a coke oven under a bad environment.

[Means for solving problems]

The measuring device of the present invention solves the above problems by having the following configuration.

That is, a hollow pipe-shaped coal height detection member formed to be able to supply cooling air inside, a drive mechanism that suspends and supports the detection member and allows it to be vertically moved into and out of the coke oven carbonization chamber, and the detection member. An automatic calculation mechanism that detects the change in weight when the lower end is coaled and measures and calculates the distance traveled by the sensing member from activation to coaling, and supplies cooling air into the inside of the sensing member. This is a device for measuring the height of coal charged in a coke oven, which is equipped with a cooling air supply mechanism.

In the present invention, it is preferable that the automatic calculation mechanism is usually combined with a means for detecting the outer surface temperature of the detection member, and has a built-in function for correcting the movement distance due to thermal expansion of the detection member to perform correction calculations. . It is preferable that the detection member and its driving mechanism are usually installed in a charging vehicle, and since the detection member is tubular, a stopper is provided at the lower end to prevent the detection member from penetrating into the coal when coal is deposited. It is desirable to provide a

Specific embodiments will be described below with reference to the drawings.

FIG. 1 is a conceptual diagram showing the overall configuration of a charging vehicle equipped with the device of the present invention, and FIG. 2 is a conceptual diagram showing the configuration of the device of the present invention. In Figure 1, 1
is a charging car, which includes a hopper 3 that receives charged coal 2 from an above-furnace coal bin (not shown);
It includes a table feeder 4, an auxiliary hopper 5, and a damper cylinder 6 for opening and closing the damper of the auxiliary hopper. Charged coal 2, which is coke raw coal, is introduced into the coking chamber 8 from the charging port 7 after passing from the inside of the hopper 3 through the inside of the auxiliary hopper 5 by the operation of the table feeder 4, as shown in the figure.

Next, the device of the present invention will be explained with reference to FIG.
is a tubular coal height detection member with one end closed and the other end open, and a stopper 10 is provided at the coal deposited part to prevent burying in the coal and to increase the sensitivity of load detection.

The coal height detection member 9 is connected to a wire 12 of a drive mechanism consisting of a wire 12 and a cylinder 13, and can be moved up and down between the coke oven top and the carbonization chamber 8. A load detector 11 is installed between the wire 12 connecting the cylinder 13 and the coal height detection member 9 to detect a change in load when the coal height detection member 9 is coaled.

Further, the connection end of the coal height detection member 9 to the wire 12 is closed, and the connection end is connected to a compressed air feed pipe 14 and further connected to an air compressor 16 via a flow rate regulator 15. It is preferable to send this compressed air continuously in order to cool the coal height detection member 9. Further, in order to measure the thermal expansion of the coal height detection member 9, a temperature detection end 17 is installed around the coal height detection member,
The signal is input to an automatic calculation mechanism 21.

Note that the coal height detection member 9 is preferably used by being inserted into the guide pipe 18 in order to prevent damage due to movement and to determine the measurement position and direction.

The measurement of the charged coal height is started by the driver of the charging vehicle turning on a switch (not shown) in the driver's cab after charging the raw coal and the subsequent leveling of the charged coal. When the cylinder 13 of the drive mechanism is actuated by the input of the switch and the coal height detection member 9 descends into the carbonization chamber 8, the load detector 11 detects the moment the coal is deposited.

Based on the signal from the load detector 11, the drive controller 19 stops driving the cylinder 13 of the drive mechanism and sends an alarm to the automatic calculation mechanism 21.
Stroke measuring device 20 consisting of a position transmitter
continuously sends a signal to the automatic calculation mechanism 21 while the drive mechanism is driving, and stops the transmission when the drive mechanism stops driving, but the signal from the stroke measuring device 20 is used to detect the coal height. This is stored in the automatic calculation mechanism 21 as the moving distance of the member 9 within the carbonization chamber.

When the automatic calculation mechanism 21 receives the alarm from the drive controller 19 described above, it calculates the movement distance of the coal height detection member 9 based on the signal sent from the stroke measuring device 20 and stored in 21. Then, the charged coal height in the coking chamber 8 is calculated, and further, the thermal expansion of the coal height detecting member is corrected to the coal height based on the signal from the temperature detection terminal 17 from the coal height detecting member 9, and this charged coal height is operated. The information is displayed on a display device (not shown) provided at an appropriate location in the room or the like.

[Effect of idea]

Since the present invention is configured as described above, it is possible to automatically and safely measure the charging coal height from the charging car on the furnace in a coke oven, and correction calculations based on thermal expansion are also performed at the same time, which is better than conventional methods. In the method of
Highly accurate measurements of 30 mm or less can be obtained quickly (within 10 seconds), compared to 50 to 100 mm, and can be reliably measured within the charging cycle. In addition, the equipment cost is lower than other methods, and since the coal height detection member is made of a tubular body and air-cooled, it has the advantage of being able to withstand extremely long-term use even under adverse conditions. The effect is extremely large.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram schematically showing the entire loading vehicle equipped with the device of the present invention, and FIG. 2 is an explanatory diagram illustrating the configuration of the device of the present invention. 1...Charging vehicle, 2...Charging coal, 3...Hopper, 5...Auxiliary hopper, 7...Charging port, 8...
Carbonization chamber, 9... Coal height detection member, 11... Load detector, 12... Wire, 13... Drive cylinder, 14... Cooling air pressure feed pipe, 16... Cooling air compression end, 17... ...Temperature detection end, 19... Drive controller, 20... Stroke measuring device, 21... Automatic calculation mechanism.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. A hollow pipe-shaped coal height detection member formed to be capable of supplying cooling air to the inside, the detection member being suspended and supported and movable up and down to be inserted into and exited from a coke oven carbonization chamber. an automatic calculation mechanism that detects a change in weight when the lower end of the detection member is coaled, and measures and calculates a moving distance of the detection member from activation of the detection member to coalization; A device for measuring the height of coal charged in a coke oven, which is equipped with a cooling air supply mechanism that feeds cooling air into the interior. 2. A utility model registration request characterized in that the automatic calculation mechanism has a built-in function that is combined with means for detecting the outer surface temperature of the detection member to correct the movement distance due to thermal expansion of the detection member. A device for measuring the height of coal charged in a coke oven according to item 1. 3. Utility model registration claims 1 and 2, characterized in that the detection member and the drive mechanism are installed in a charging vehicle, and the detection member moves up and down via an auxiliary hopper of the charging vehicle. A device for measuring the height of coal charged in a coke oven. 4. The apparatus for measuring the height of coal charged in a coke oven according to any of claims 1 to 3, characterized in that a stopper for preventing penetration is provided at the lower end of the detection member.