JPH0776341B2 - Coke oven furnace lid side cleaning device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a coke oven machine such as a coke extruder or a coke guide wheel, and the like. The present invention relates to a coke oven furnace lid side cleaning device provided for cleaning adhered substances such as.

[Conventional technology]

BACKGROUND ART Conventionally, a coke oven furnace lid side cleaning device is provided with one elevator carriage that can be moved up and down along knife edge groove portions that are connected to each other by a lifting chain and that are respectively arranged on the oven lid side portions. Each of them is equipped with a mechanical cleaning device for scraping and cleaning the side surface of the plug and a high-pressure water cleaning device for cleaning the knife edge groove portion by cleaning with high-pressure water, and the cleaning effect by the high-pressure water cleaning device and dirt on the furnace lid are provided. Depending on the overall tendency of the degree, the moving speed of the lift truck at the upper, middle and lower parts of the furnace lid is set, and the lift truck is moved slowly at the upper and lower parts of the furnace lid and at high speed at the middle part of the furnace lid. Are cleaning.

[Problems to be Solved by the Invention]

However, in the above-mentioned conventional apparatus, the property and the shape and the thickness of the deposit adhered to the knife edge groove portion of the furnace lid vary depending on the type of coal, the operating conditions, and the location of the deposit on the furnace lid. Since the cleaning conditions are set in advance according to the overall tendency of the degree of contamination (adhesion), it is not possible to deal with the actual variation in the degree of contamination in the furnace lid height direction for each furnace lid. Since it is not possible to deal with the difference in the degree of dirt in the edge groove part, it is difficult to clean the average, and the left and right knife edge groove parts cannot be cleaned evenly, which avoids the inconvenience of excessive cleaning or insufficient cleaning. There wasn't.

[Object of the Invention]

The present invention has been made to solve the above problems, and an object of the present invention is to enable uniform cleaning of the left and right knife edge groove portions of a furnace lid.

[Means for Solving the Problems]

The coke oven furnace lid side cleaning device of the present invention is provided with a lift truck that can be moved up and down along a knife edge groove portion of the furnace lid side portion that is arranged with respect to the furnace lid supported by a holder, A pair of left and right measuring devices for measuring the adhered shape and thickness of the deposit in the knife edge groove portion, and a pair of left and right nozzle heads for cleaning the knife edge groove portion by cleaning with a water jet are provided, and the high pressure is applied to the nozzle head. A high-pressure water circuit that changes and distributes the flow rate from the water pump to the left and right nozzle heads is connected, and is connected to the measuring device, and the knife edge groove portion is operated by processing the measurement signal from the measuring device. Calculate the adhesion area of the adhered matter in the However, A ₀ : cross-sectional area of the knife edge groove (= knife edge height from groove bottom x groove width) A: knife edge groove's average area (= adhesion area) of the left and right knife edge grooves The high-pressure water circuit is a data processor that determines an average blockage rate to determine the balance of the amount of wash water from the pair of left and right nozzle heads, and determines the maximum allowable moving speed of the lift truck based on the amount of wash water of the larger one. And the drive device for the lift truck, and the above-mentioned configuration achieves the above object.

〔Example〕

 An embodiment of the present invention will be described below with reference to the drawings.

1 to 6 show a main body of the device of the present invention, in which 1 is a lift truck, and a guide rail 3 is provided on a frame 2 provided on a coke oven machine as against a furnace lid G supported by a holder not shown. It is mounted so as to be able to move up and down via a guide roller 4. This lift truck 1 is connected to both ends of a chain 7 hung between the sprockets 5 and 6 provided on the upper and lower parts of the frame 2, and is driven by a drive device 8 on the frame 2 connected to a data processor 22 described later. It is possible to ascend and descend along the knife edge groove portion a of the furnace lid G via 7.

Reference numeral 9 denotes a pair of left and right cutter arms, which are swingably attached to the lifting carriage 1 via pins 10 so that the lower end portion of the cutter arm 9 can be swung by a pressing cylinder 11 interposed between the upper end portions. Has become.

Reference numerals 12 ₁ and 12 ₂ denote a pair of left and right rotary scrapers, which are rotatable around a shaft (not shown) provided at the lower end of the cutter arm 9 so as to horizontally project on both sides of the plug b of the furnace lid G. It is attached via a bearing 13. The left and right rotary scrapers 12 ₁ and 12 ₂ can be driven by a drive device 14 provided at the lower end of the cutter arm 9.

15 ₁ and 15 ₂ have a plurality of nozzle tips as one unit 2
Unit A, left and right pair of water jet nozzle head having s a B respectively, the nozzle head 15 _1, 15 ₂ of the nozzle tip unit 15 ₁ -A, 15 ₁ -B, 15 ₂ -A, 15 ₂ -B
A high-pressure water circuit described later is connected to the. The nozzle heads 15 ₁ and 15 ₂ are attached to the tip of the shaft,
When the rotary scrapers 12 ₁ and 12 ₂ are brought into contact with the side surface of the plug b of the furnace lid G, they are oriented toward the knife edge groove portion a.

16 ₁ and 16 ₂ are a pair of left and right measuring devices for measuring the adhered shape and thickness of the adhered matter in the knife edge groove portion a.

Next, the measuring devices 16 ₁ and 16 ₂ will be described with reference to FIG.

The measuring devices 16 ₁ and 16 ₂ are a laser projector (HeNe laser) 17, a special diffusion lens 18, a special condenser lens 19 and a light receiver.
It is composed of 20 (two-dimensional image sensor camera), the light projected from the laser projector 17 is fan-shaped spread by the special diffusion lens 18 and is irradiated into the knife edge groove a of the furnace lid G, and the irradiated portion ( The reflected light from the measurement point) is captured by the special condenser lens 19 and received by the light receiver 20,
The horizontal (H) × vertical (V) resolution of the light-receiving element gives an image of the shape of the adhered substance adhering in the groove width direction as shown in FIG. 8 and the shape signal at each measurement point on the groove width direction line. (H × V) can be output.

As shown in FIG. 9, the distance measuring unit 21 is connected to the light receivers 20 of the measuring devices 16 ₁ and 16 ₂ and the data processing unit (CPU) 22 is connected to the distance measuring unit 21. The shape signal (H × V) output from 20 is digitally processed in the distance type unit 21 and each measured value (0, V ₀ ) on the groove width direction line (H ₁ , V ₁ ), ..., (H _n , V _n ) and the distance from the laser projector 17 to the knife edge tip V _A
Is calculated and this shape data is input and set in the data processor 22 in advance: V ′ = V _B + V _A −V _n (1) where V ′ is the thickness of the deposit at each measurement point. V _A : Distance from laser projector to knife edge tip V _B : Knife edge height from groove bottom (constant, pre-entered) V _n : At each measurement point based on the distance from laser projector to each measurement point The deposit thickness is calculated to find the deposit shape, the average of the deposit thickness at each measurement point is calculated, and the average deposit thickness is multiplied by the groove width, or the deposit thickness at each measurement point is calculated. The length is defined as the length, the area of each rectangle is calculated with the pitch of the measurement points as the width, and the total area is calculated to obtain the adhesion area. Further, the data processor 22 has the following formula However, C: average blockage rate,% A ₀ : cross-sectional area of knife edge groove (constant, already entered) A: average cross-sectional area (adhesion area) of deposits inside the knife edge groove is set and entered. After calculating the adhesion area as described above, the average blocking rate is calculated based on the equation (2).

Next, the high-pressure water circuit connected to the nozzle heads 15 ₁ and 15 ₂ will be described with reference to FIG.

The high-pressure water circuit Nominal flow rate Q = 3q a is a high-pressure water pump 23 to the switching valve _{SV 1 -A1, SV 1 -B1,} SV 2 -A2, SV 2 through -B ₂ respectively nozzle head 15 _1, 15 _Two nozzle tip units A and B are connected, and the left and right nozzle heads 15 ₁ and 15 ₂
To take washing water balance from switching valve SV ₁ -A1 as shown in _{Appendix, SV 1 -B1, SV 2 -A2} , SV 2 -B2 ON operation (○), the nozzle head by off operation (×) It is possible to supply the flow rate 1q to one of 15 ₁ and 15 ₂ and the flow rate 2q to the other.

Then, the switching valve _{SV 1 -A1, SV 1 -B1,} SV 2 -A2, on the SV ₂ --B2, in order to off operation, the solenoid coil of each is connected to the data processor 22, data In the processor 22, the nozzle head 1 is provided so that more cleaning water (flow rate 2q) is supplied to the one with a larger degree of contamination based on the calculated average blockage rate of the left and right knife edge grooves a.
The balance of wash water from 5 ₁ and 15 ₂ is determined and the solenoid coil is excited or demagnetized.

In addition, the data processor 22 connected to the drive device 8 for raising and lowering the lift truck 1 has the following formula. However, q ′: Larger amount of washing water / min B: Washing width (constant) mm Q: Minimum washing flow rate required per unit area of washing surface corresponding to the larger amount of washing water / mm ² V: Lifting truck The maximum permissible moving speed m / min, the blocking rate C set so that a sufficient cleaning effect can be obtained by the amount of cleaning water supplied as shown in Fig. 12, and the minimum cleaning flow rate Q required per unit area of the cleaning surface Based on the above formula (3), the amount of cleaning water supplied to the one with a large amount of dirt is q '= 2q and the average blockage rate C of the knife edge groove portion a with a large amount of dirt is 80%. The allowable maximum moving speed V of the lift truck 1 is calculated and determined, and the drive device 7 can be controlled to be equal to or lower than the allowable maximum moving speed V.

In the above configuration, rotation of the left and right with the support receiving the furnace lid G from furnace lid desorption apparatus by unshown holder scraper 12 _1, 12 ₂
After inserting it between them, while measuring the degree of adhered matter in the left and right knife edge groove portions a of the furnace lid G by the measuring devices 16 ₁ and 16 ₂ while raising the lift truck 1 from the lower limit position,
A shape signal (H × V) at each measurement point on the groove width direction line is output and digitally processed in the distance meter unit 21, and this shape data is input to the data processor 22 and the left and right knife edge groove portions a. mean occlusion rate of each is calculated, the switching valve SV ₁ -A1 by the data processing unit _{22, SV 1 -B1, SV 2} -A2, SV 2 -
B2 is switched, for example, left knife edge groove a
Mean occlusion rate of 80%, the average occlusion percentage of the right knife edge groove a is 20% because towards the left knife edge groove a is more dirty, the left nozzle tip unit 15 ₁ -
A, 15 ₁ -B wash water at a flow rate 2q is supplied to, together with the washing water at a flow rate 1q to the right of the nozzle tip unit 15 ₂ -A supplied, the left nozzle head 15 ₁ permissible maximum moving speed V _L
And the allowable maximum moving speed V _R of the right nozzle head 15 ₂ are calculated and compared, the moving speed of the lifting carriage 1 is determined to the allowable maximum moving speed V _L of the slower left nozzle head 15 ₁ and the drive unit 8 is controlled. It

Therefore, as the lift truck 1 rises at the maximum moving speed V _L , the washing water is jetted from the left nozzle head 15 _{1 at a} flow rate 2q and the washing water is jetted from the right nozzle head 15 ₂ at a flow rate 1q. _The water jets jetted from ₁ , 15 ₂ will surely wash and remove the deposits attached to the left and right knife edge grooves a of the furnace lid G. In parallel with this cleaning operation, when the rotary scrapers 12 ₁ and 12 ₂ are rotated by pressing the rotary scrapers 12 ₁ and 12 ₂ against the deposits on the side surface of the plug b of the furnace lid G by the pressing cylinder 11 via the cutter arm 9, the rotary scraper 14 _{1 is} rotated. , deposits adhered to the plug b side of the furnace lid G by 14 ₂ is scraped off. The lift truck 1 rises to the upper part of the frame 2 and the cleaning work is completed at the upper limit position.

〔The invention's effect〕

As described above, the present invention adopts the concept of the average blockage rate obtained based on a certain arithmetic expression to detect the degree of contamination (adhesion) of the left and right knife edge grooves of the furnace lid, and ejects from the left and right nozzle heads accordingly. The flow rate of the water jet to be distributed is distributed in a well-balanced manner, and the allowable maximum movement speed of the nozzle head (lift truck) is determined based on the flow rate of the larger water jet. It can be reliably cleaned without any excessive washing or insufficient washing as in the conventional case.
Further, from the above configuration, the cleaning of the side of the oven lid of the coke oven can be easily automated and unmanned.

[Brief description of drawings]

1 and 2 are front views, side views, FIG. 3 and FIG. 4 showing an embodiment of the present invention as a whole, respectively, and FIG. 5 is an enlarged view of an essential part of FIG. 1 and FIG. 4 is a partial left side view of FIG. 4, FIG. 6 is a plan view of FIG. 4, FIG. 7 is a conceptual diagram of the measuring device, and FIG. 8 is an image of the deposit shape of the deposit obtained by the measuring device. Diagram, Fig. 9 is a system diagram from the transmission of shape signals to the processing of shape data, and Fig. 10 is an explanatory view of the data processing method.
FIG. 11 is a high-pressure water circuit diagram, and FIG. 12 is a relationship curve diagram between the average blockage rate and the minimum amount of wash water. 1 ... Lifting truck, 2 ... Frame, 3 ... Guide rail, 4 ... Guide roller, 5, 6 ... Sprocket, 7
…… Chain, 8 …… Drive device, 9 …… Cutter arm,
10 …… Pin, 11 …… Pressing cylinder, 12 ₁ , 12 ₂ …… Rotary scraper, 13 …… Bearing, 14 …… Drive unit, 15 ₁ , 15 ₂ ……
Water jet nozzle head, 15 ₁ -A, 15 ₁ -
_{B, 15 2 -A, 15 2} -B ...... nozzle tip unit, 1
6 ₁ , 16 ₂ …… Measuring device, 17 …… Laser projector, 18 ……
Special diffuser lens, 19 ... Special condenser lens, 20 ... Receiver, 21 ... Distance meter unit, 22 ... Data processor, 23 ...
… High-pressure water pump.

Claims (1)

[Claims] 1. A lift carriage provided to a furnace lid supported by a holder and capable of moving up and down along a knife edge groove portion on the side of the furnace lid, and the lift truck having deposits in the knife edge groove portion. A pair of left and right measuring devices for measuring the adhered shape and thickness of the same and a pair of left and right nozzle heads for cleaning the knife edge groove portion by cleaning with a water jet are provided, and the nozzle head is connected to the left and right nozzle heads from the high pressure water pump. The high pressure water circuit for changing and distributing the flow rate of is connected to the measuring device, and the measurement signal from the measuring device is arithmetically processed to determine the adhesion area of the deposit in the knife edge groove. The following formula However, A ₀ : cross-sectional area of the knife edge groove (= knife edge height from groove bottom x groove width) A: knife edge groove's average area (= adhesion area) of the left and right knife edge grooves A data processor for determining the wash water amount balance of the pair of left and right nozzle heads by obtaining an average blockage rate, and for determining the allowable maximum moving speed of the lifting carriage based on the wash water amount of the larger one is the high-pressure water circuit. A coke oven furnace lid side cleaning device, which is connected to the drive device of the lift truck.