JP5380843B2 - Apparatus and method for detecting the installation of a lid on a coke oven - Google Patents

Description

  The present invention relates to an apparatus and method for detecting the installation of a coke oven lid for detecting whether the oven lid is properly seated on the bracket when the oven lid is dropped into the bracket to fix the furnace lid. .

  In the coke oven, a carbonization chamber for carbonizing coal and a combustion chamber for burning fuel gas are alternately arranged to form a furnace group. The side wall of the coking oven carbonization chamber is closed with a removable furnace lid. A furnace lid is provided on the furnace lid. The bracket of the coke oven is formed with a U-shaped groove into which the furnace lid is fitted. The furnace lid once mounted is lowered, and the furnace lid is fitted into the groove of the bracket, whereby the furnace lid is attached to the side wall of the carbonization chamber.

  The coke oven is equipped with auxiliary equipment such as a guide car and an extruder. When the carbonization in the carbonization chamber is completed, the guide wheel and the extruder are aligned with the position of the furnace lid of the carbonization chamber. A furnace lid attaching / detaching machine is mounted on the guide wheel and the extruder. The furnace lid detacher lifts the furnace lid and removes the furnace lid from the carbonization chamber. After removing the furnace lid, the extruder performs the coke extrusion work. The guide car guides the extruded coke to the coke car. When the extruding operation is finished, the guide lid and the furnace lid attaching / detaching machine of the extruder close the furnace lid again.

  Mechanization is indispensable for moving machines such as guide cars and extruders, and automatic operation is being promoted. For automation, it is necessary to check whether the furnace lid is properly seated on the coke oven bracket. If not seated properly, the gas in the carbonization chamber may leak out and lead to a gas explosion.

Patent Document 1 discloses a furnace cover mounting state detection method for detecting the mounting state of a furnace cover. A lever that can contact the furnace lid is provided in the furnace lid attaching / detaching machine of the guide vehicle. Measure the position of the lever when the lever abuts the furnace lid, compare the measured lever position with the reference position of the lever, and if the two are equal, the seating state of the furnace lid on the bracket is good. Judge that there is. Here, the reference position of the lever to be compared is the position of the lever when the furnace lid is seated on the bracket.
JP 2005-48120 A

  In the conventional detection method, the seating state of the furnace lid is confirmed by comparing the level difference from the guide wheel to the furnace lid with a reference value. This detection method assumes that the difference between the level of the guide wheel and the level of the bracket of the coke oven is constant.

  However, in reality, the rail on which the guide vehicle runs is deformed due to ground subsidence or the own weight of the guide vehicle, and the difference between the level of the guide vehicle and the level of the bracket of the coke oven is not always constant. If the difference between the level of the guide car and the level of the bracket of the coke oven changes according to the position of the guide car, the difference in level from the guide car to the furnace lid only changes. For this reason, in the conventional detection method, the detection error is too large, and the operator's visual confirmation is required.

  Accordingly, the present invention provides a coke oven furnace lid mounting that can accurately detect the mounting state of the furnace lid to the bracket even if the difference between the level of the extruder or guide car and the bracket level of the coke oven changes. It is an object to provide a detection apparatus and method.

In order to solve the above-mentioned problem, the invention described in claim 1 is a coke oven detection device for detecting a state in which a furnace lid is seated on a bracket of a coke oven, from a guide wheel or an extruder. A furnace lid height measuring unit for measuring the height of the furnace lid to the furnace lid, and a bracket height measuring unit for measuring the bracket height from the guide wheel or the extruder to the bracket of the coke oven were measured. A seating state determination unit for determining a seating state of the furnace lid on the bracket of the coke oven based on a sum of the furnace lid height and the bracket height, and the furnace lid height measuring unit The furnace lid detection lever that can contact the upper ends of the two furnace lids up and down, the drive source that linearly moves the furnace lid detection lever only up and down, and the furnace lid detection lever Measure the amount of descent of the furnace lid detection lever until it comes into contact with Includes a sensor, wherein the bracket height measuring unit, a bracket detection lever that can abut against the lower end of the bracket, a drive source for only linearly moved up and down the bracket detection lever, bracket detection lever bracket bottom And a sensor for measuring the amount of elevation of the bracket detection lever until it comes into contact with the coke oven.

The invention according to claim 2 is the coke oven detection device for detecting installation of a coke oven according to claim 1 , wherein the seating state determination unit adds the measured height of the furnace lid and the bracket height, When the total value exceeds or exceeds the specified value, it is determined that the seating state of the furnace lid on the bracket is appropriate, and when the combined value is less than the specified value or less than the specified value, It is determined that the seating state of the lid is not appropriate.

The invention according to claim 3 is a method for detecting the installation of a furnace lid in a coke oven that detects a state in which the furnace lid is seated on a bracket of a coke oven, wherein the furnace lid from the guide wheel or the extruder to the furnace lid A furnace lid height measuring step for measuring the height, a bracket height measuring step for measuring a bracket height from the guide wheel or the extruder to the bracket of the coke oven, the measured furnace lid height and the measured A seating state determining step for determining a seating state of the furnace lid on the bracket based on a sum value of the bracket height, and in the furnace lid height measuring step, Measuring the bracket height by moving the furnace lid detection lever that can come into contact with the upper end linearly only up and down, and measuring the amount of lowering of the furnace lid detection lever until the furnace lid detection lever contacts the furnace lid In the process, it can contact the lower end of the bracket Linearly moved vertically only racket detection lever, bracket detection lever and measuring the amount of increase in the bracket detection lever until it abuts against the lower end of the bracket.

  According to the present invention, a change in the difference between the level of the guide wheel or the extruder and the level of the bracket of the coke oven can be absorbed, so that the mounting state of the furnace lid to the bracket can be accurately detected.

  Moreover, by determining the seating state of the furnace lid based on the total value of the furnace lid height and the coke oven height that is constant even when the guide wheel or the extruder is displaced in the vertical direction, The sitting state can be accurately determined.

  DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a coke oven lid detecting device according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 shows a perspective view of a coke oven in which this furnace cover mounting detection apparatus is used. In the coke oven, a carbonization chamber 2 and a combustion chamber 3 are alternately arranged in the upper part of the heat storage chamber 1 to form a furnace group. The blended and particle size-adjusted coal is stored in the coal tower 4. The coal loading vehicle 5 receives coal from the gate at the lower part of the coal tower 4, travels to a predetermined carbonization chamber 2, and charges the carbonization chamber 2 with coal. The charcoal vehicle 5 includes a lifting magnet for attaching and detaching the upper lid 2 a of the carbonization chamber 2. Charging the coal into the carbonization chamber 2 is by a table feeder or natural fall.

  When the dry distillation of coal is completed in the carbonization chamber 2 and the coal is completely coke, the extruder 6 opens the furnace lid of the carbonization chamber 2, extrudes red hot coke, and closes the furnace lid. In the empty coking chamber 2 where the coke has been pushed out, the coal loading vehicle 5 charges the coal from above the coke oven. The extruder 6 includes a furnace lid attaching / detaching device 6a that lifts and closes the furnace lid of the carbonization chamber 2, an extrusion ram 6b that extrudes red hot coke, and a leveler that smoothes coal in the carbonization chamber.

  The guide wheel 7 is located on the opposite side of the extruder 6 across the carbonization chamber 2 and moves on the rail of the work floor. When the coal in the carbonizing chamber 2 is pushed out, the guide wheel 7 opens the furnace lid of the carbonizing chamber 2 on the guide wheel side, aligns the guide lattice 7a with the carbonizing chamber 2, and guides the extruded red hot coke onto the coke car 8. To do. The guide wheel 7 has a furnace lid attaching / detaching device that lifts and opens the furnace lid of the carbonization chamber 2.

  The coke car 8 has a coke tank that receives red hot coke extruded through the guide grid 7a of the guide car 7, and is towed by a train to travel. The coke car 8 that has received red hot coke travels to the digestion tower.

  These charcoal wheel 5, extruder 6, guide wheel 7, coke car 8 and the like are called furnace-side equipment. Automatic operation of the furnace equipment is being promoted. In advancing automatic operation, it is necessary to confirm whether or not the furnace lid attaching / detaching device of the extruder 6 and the guide wheel 7 has closed the furnace lid of the carbonizing chamber 2 reliably. This is because if the furnace lid is not sufficiently closed and the sealing performance is poor, the gas in the carbonization chamber 2 leaks to the outside and adversely affects the working environment of the coke oven. The furnace lid attachment detection device of the present invention detects whether or not the furnace lid of the carbonization chamber 2 is securely closed by the furnace lid attachment / detachment device.

  FIG. 2 shows a front view of the coking chamber 2 of the coke oven. The furnace lid 9 is a furnace body made of heat-resistant cast iron or the like, with a furnace wall brick lined. A pair of upper and lower furnace lids 10 for attaching / detaching the furnace lid 9 to / from the bracket 11 of the coke oven is attached to the furnace lid 9. The brackets 11 are provided on both the left and right sides of the carbonization chamber 2. The left and right brackets 11 are arranged at the same level. In addition, two sets of brackets 11 on both the left and right sides are arranged vertically in accordance with the pair of upper and lower furnace lids 10.

  FIG. 3 shows a cross-sectional view of the carbonization chamber 2. The bracket 11 is formed with a U-shaped groove 11a. The furnace lid attaching / detaching machine lowers the once-lifted furnace lid 9 so that the furnace lid rod 10 is seated in the groove 11a. The furnace lid 10 does not need to enter the bottom of the groove 11a of the bracket 11. When the furnace cover 10 is fitted in the groove 11a of the bracket 11 by a predetermined amount or more, the seating state of the furnace cover 10 may be appropriate. For example, when the thickness of the furnace cover 10 is 50 mm, the seating state is appropriate if a half of 25 mm or more is fitted in the groove 11 a of the bracket 11.

  FIG. 4 is a configuration diagram of the furnace cover attachment detection device. The furnace lid attachment detection device includes a furnace lid height measuring unit 14 that measures the furnace lid height, a bracket height measuring unit 18 that measures the bracket height, and the measured furnace lid height and bracket height. And a seating state determination unit 15 that determines the seating state of the hearth rod 10.

  The furnace lid height measuring unit 14 is provided in the guide wheel 7 or the extruder 6, and measures the furnace lid height a from the guide wheel 7 or the extruder 6 to the furnace wall 10. Specifically, the furnace lid detection lever 12 that can come into contact with the upper end of the furnace lid 10 is lowered from a predetermined position, and the lowered amount of the furnace lid detection lever 12 is measured. The furnace lid detection lever 12 has a main body part 12a extending vertically and two upper and lower contact parts projecting from the main body part 12a toward the coke oven so as to be able to make contact with the two furnace lids 10 up and down. 12b. The tip of the contact portion 12b is bent into a bowl shape. The furnace lid detection lever 12 is moved up and down by a cylinder cylinder 13 as a drive source. The SIRNACK cylinder 13 is a sensor-integrated pneumatic cylinder. The sensor of the cylinder cylinder 13 measures the descending amount of the furnace lid detection lever 12 from a predetermined position.

  The bracket height measuring unit 18 is provided in the guide wheel 7 or the extruder 6 and measures the bracket height b from the guide wheel 7 or the extruder 6 to the bracket 11. Specifically, the bracket detection lever 16 that can come into contact with the lower end of the bracket 11 is raised from a predetermined position, and the amount of elevation of the bracket detection lever 16 is measured. This rising amount is the bracket height b. The bracket detection lever 16 is moved up and down by a cylinder cylinder 17 as a drive source. The amount by which the bracket detection lever 16 is lifted from a predetermined position is measured by the sensor of the cylinder cylinder 17.

  Here, the total value of the furnace lid height a measured by the furnace lid height measuring unit 14 and the bracket height b measured by the bracket height measuring unit 18 is the upper and lower values of the guide wheel 7 or the extruder 6. It is important to be constant regardless of the direction displacement. If the rail is distorted and the guide wheel 7 or the extruder 6 is displaced downward, the lowering amount until the furnace lid detection lever 12 contacts the furnace lid 10 becomes small, and the furnace lid height a Becomes smaller. On the other hand, since the amount of ascending until the bracket detection lever 16 contacts the bracket 11 increases, the bracket height b increases. On the other hand, if the guide wheel 7 or the extruder 6 is displaced upward, the furnace lid height a increases and the bracket height b decreases. Therefore, the sum of the furnace lid height a and the bracket height b is always constant.

  The data of the furnace lid height a and the bracket height b are input to the computer 15 which is a seating state determination unit. The computer 15 adds the furnace lid height a and the bracket height b, and when the added value exceeds a predetermined value or exceeds a predetermined value, the seating state of the furnace lid 10 on the bracket 11 is appropriate. When the determined value is less than the predetermined value or less than the predetermined value, it is determined that the seating state of the furnace lid 10 on the bracket 11 is not appropriate.

Specifically, the computer determines the mounting state of the furnace lid 10 from the following relational expression.

(Formula 1)
C- (a + b) <| 25 | C: constant

C is a total value of the furnace lid height a and the bracket height b when the guide wheel 7 or the extruder 6 and the bracket 11 are in a normal positional relationship. For example, when the thickness of the furnace lid 10 is 50 mm, the right side of the relational expression is set to 25. If 25 mm, which is half of the thickness of the furnace lid 10, is within the bracket 11, the above relational expression is established, so that the seating state is determined to be appropriate.

  When seating of the furnace lid 10 on the bracket 11 is insufficient, the furnace lid height a is reduced, and the total value (a + b) is also reduced. By managing whether or not the total value is greater than or equal to the predetermined value, the seating state of the furnace lid 10 can be confirmed without being affected by the vertical displacement of the guide wheel 7 or the extruder 6. The displacement in the vertical direction of the guide wheel 7 or the extruder 6 due to the distortion of the rail is about 80 mm at the maximum. Only by absorbing the vertical displacement of the guide wheel 7 or the extruder 6 which is about 80 mm, it becomes possible to accurately determine whether or not the furnace lid 10 is contained in the bracket 11 by 25 mm or more.

  FIG. 5 shows a flowchart of a program executed by the computer 15. First, the furnace lid height a data and bracket height b data are input to the computer (S1, S2). Next, the computer 15 adds the furnace lid height a data and the bracket height b data (S3), and determines whether the total value is equal to or greater than a predetermined value or exceeds a predetermined value based on Equation 1 (S3). S4). And when it is more than a predetermined value or exceeds a predetermined value, it is judged that the seating state of the furnace lid 10 is appropriate (S5). Otherwise, it is determined that the seating state of the furnace lid 10 is inappropriate (S6).

  When the computer 15 determines that the seating state of the furnace lid 10 is inappropriate, the furnace lid attaching / detaching device performs the furnace lid closing operation again. The furnace lid attaching / detaching apparatus repeats the closing operation of the furnace lid 9 until the computer 15 determines that the seating state of the furnace lid rod 10 is appropriate.

  The furnace cover wearing state detection device of this embodiment was attached to a guide wheel. The confirmation of the mounting state of the furnace lid has been ensured, and the visual confirmation by the operator, which has been conventionally required, is no longer necessary. As a result, the unmanned driving rate (FA rate) of the guide vehicle was improved from 82% to 94%.

  In addition, this invention is not restricted to the said embodiment, In the range which does not change the summary of this invention, it can change variously. For example, the sum of the furnace lid height and bracket height should be constant, the furnace lid height measuring unit measures the height to the lower end of the furnace lid cage, and the bracket height measuring unit is the bracket height. You may measure the height to the upper end of.

  Further, a hydraulic cylinder or a ball screw mechanism may be used as a drive source for driving the detection lever instead of the pneumatic cylinder. A linear scale or an encoder may be used for the sensor.

1 is a perspective view of a coke oven in which a furnace cover detection device according to an embodiment of the present invention is used. Front view of the coking oven carbonization chamber Cross-sectional view of the carbonization chamber of the coke oven The block diagram of the furnace cover mounting | wearing detection apparatus of one Embodiment of this invention. Flow chart of furnace cover detection device program

Explanation of symbols

6 ... Extruder 7 ... Guide wheel 9 ... Furnace lid 10 ... Furnace lid 11 ... Bracket 12 ... Furnace lid detection lever 13 ... Sir Nac cylinder (drive source)
14 ... hearth height measuring unit 15 ... computer (sitting state determination unit)
16 ... Bracket detection lever 17 ... Sir Nac cylinder (drive source)
18 ... Bracket height measuring part a ... Furnace lid height b ... Bracket height

Claims (3)

A coke oven detection device for detecting a state in which a furnace lid is seated on a coke oven bracket,
A furnace lid height measuring unit for measuring the height of the furnace lid from the guide car or the extruder to the furnace lid;
A bracket height measuring unit for measuring the bracket height from the guide wheel or extruder to the bracket of the coke oven,
A seating state determination unit for determining a seating state of the furnace lid on the bracket of the coke oven based on the measured value of the height of the furnace lid and the bracket height;
The furnace lid height measuring unit includes a furnace lid detection lever that can contact the upper ends of two furnace lids up and down, a drive source that linearly moves the furnace lid detection lever linearly, A sensor for measuring the amount of descending of the lid lid detection lever until the lid lid detection lever contacts the lid lid,
The bracket height measuring unit includes a bracket detection lever that can contact the lower end of the bracket, a drive source that linearly moves the bracket detection lever only up and down, and a bracket detection until the bracket detection lever contacts the lower end of the bracket. And a sensor for measuring the amount of lift of the lever. The seating state determination unit adds the measured height of the furnace lid and the bracket height,
When the total value exceeds or exceeds the predetermined value, it is determined that the seating state of the furnace lid on the bracket is appropriate,
2. The apparatus for detecting the installation of a coke oven in a coke oven according to claim 1, wherein when the combined value is less than a predetermined value or less than or equal to a predetermined value, it is determined that the seating state of the oven lid on the bracket is not appropriate. A method of detecting the installation of a coke oven lid for detecting a state in which a furnace lid is seated on a bracket of a coke oven,
A furnace lid height measuring step for measuring the height of the furnace lid from the guide car or the extruder to the furnace lid,
A bracket height measuring step for measuring the bracket height from the guide car or the extruder to the bracket of the coke oven,
A seating state determination step of determining a seating state of the furnace lid on the bracket based on the measured value of the height of the furnace lid and the bracket height,
In the furnace lid height measuring step, the furnace lid detection lever that can contact the upper ends of the two furnace lids up and down is linearly moved only up and down , and the furnace lid detection lever contacts the furnace lid Measure the descent amount of the furnace lid detection lever until
In the bracket height measuring step, the bracket detection lever that can abut on the lower end of the bracket is linearly moved only up and down , and the amount of elevation of the bracket detection lever until the bracket detection lever abuts on the lower end of the bracket is measured. A feature of the coke oven detection method.

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