KR20140045293A - Strain-free stationary furnace door actuator for a coke furnace battery of the heat-recovery type - Google Patents

Abstract

FIELD OF THE INVENTION The present invention relates to a deformed stationary oven door actuator for a "non-recovery" type or "heat-recovery" type coke oven battery capable of opening the coke oven chamber doors vertically without the use of a coke oven actuator. Wherein the deviation of the tension member of the oven door actuator from the intended arrangement due to the deformation of the delivery device and the undesired increase in tension due to the difference in the attachment force of the coke oven chamber doors during the closure result in Are prevented using. The invention also relates to a method of operating a stationary door without deformation of a "heat-recovery" type coke oven plant, which method provides rigid tensioning elements and low-strain transmission for automatically opening and closing coke oven chamber doors. Use devices.

Description

STRAIN-FREE STATIONARY FURNACE DOOR ACTUATOR FOR A COKE FURNACE BATTERY OF THE HEAT-RECOVERY TYPE}

The present invention provides a strain-free stationary oven door actuator for a "heat-recovery" type coke oven plant that can open the coke oven chamber doors vertically without the use of a coke oven actuator. In which the deviation of the tension members of the oven door actuator of the reference assembly resulting from the deformation of the transmission devices and the undesirable traction due to the difference in the attachment force of the coke oven chamber doors during closure Magnification of can be avoided using low-strain delivery devices and tension members. The invention also applies to a method of operating a deformed stationary oven door of a "heat-recovery" type coke oven plant using rigid tensioning members that automatically open and close the coke oven chamber doors and delivery devices without deformation. do.

Coke is usually produced periodically, where coal is first charged into the coke oven chamber for coking, the coal is coked and the coke produced is then discharged from the coke oven chamber. To carry out this periodic manufacturing method, the coke oven chamber doors must be opened after charging and closed again after discharge. Since this procedure is time consuming and the temperature applied during coking has to be taken into account from a safety point of view, there are several prior arts that mechanically perform the process of opening and closing the coke oven chamber doors.

Typically, the opening process of the coke oven chamber doors is performed by a coke oven aspirator that removes the door of the coke oven and moves the door horizontally away from the coke oven prior to the discharge process. After emptying and charging the coke oven chamber, the coke oven chamber door is left open again. A disadvantage of this process is that large space is required in front of the coke oven chamber doors for the coke oven operating mechanism that initiates the process of lifting and reinserting the door to move the coke oven chamber door horizontally away.

For this reason, there are several prior art methods that can open the coke oven chamber door by straight vertical lift. Thus, no space is required for opening and closing the devices in front of the coke oven chamber doors.

International Publication No. 2001/18150 A2 discloses a coke oven chamber, a secondary heating room, a cooling air duct under the coke oven chamber, an air supply duct, a device for regulating air intake into the air supply duct, an exhaust collection duct, a coke oven Coal charging equipment charged from the roof of the chamber, drafting equipment to evacuate from one side of the coke oven chamber and quenching trolley to lift coke from the other side of the coke oven chamber, coke oven chamber door, door opening mechanism, coke storage device, quenching A system consisting of an exhaust collection duct to a tower and a boiler installation is disclosed. This principle discloses an opening and closing mechanism for a coke oven chamber door which opens the doors vertically by the tension of the hydraulic drive unit, wherein the deflection pulleys (a) are used to convey the cable horizontally and against the counterweight. Tensile force, which is converted into horizontal tension by deflection pulleys, is transmitted through the cables. No mention has been made of the automated operation of the coke oven chamber doors that enable the individual operation of the coke oven chamber doors and the reliable opening and closing of the individual coke oven chamber doors of the coke oven battery.

German Patent No. 144947 C specifically discloses a coke oven chamber of coke ovens by a tensioning device in which a rod, frame or similar type of device is guided by automatically connected power cylinders and rollers and in contact with the oven doors. An apparatus for elevating doors is disclosed, wherein a movable rod or the like capable of moving in the front direction of the ovens is provided with a plurality of tensioning devices so that the plurality of oven doors can be lifted simultaneously upon request. In addition, the device does not allow for the automated operation of the entire coke oven bench with separate coke oven chambers, since the actuating device for the individual power transmission mechanism is not available, and also the transfer of the tension force is via one single cable. Has its drawbacks.

German Patent No. 98545 C discloses a device for opening and closing coke oven chamber doors, in which the coke oven chamber doors are mechanically and frontwardly driven by a winch traveling over the coke oven chamber doors. From the joining position, which is installed on a coke oven bench or a coke oven battery, it is possible to elevate, the tensioning devices of the device being a power source set on the one hand, and on the other hand lifting each of the adjacent doors at one point. It can be connected to one of the coke oven chamber doors for lifting purposes. The invention does not allow automated operation of individual coke oven chamber doors, only manual operation of individual coke oven chamber doors. Therefore, automated operation of the entire coke oven bench with separate coke oven chambers is not possible. Another problem is the use of power transmission systems that do not meet the mechanical requirements of modern coke oven chamber door opening mechanisms.

International Publication No. 2009/068183 A1 discloses a drive mechanism for vertically opening and closing coke oven chamber doors and vertically opening and closing horizontal coke oven chambers, which lift the doors to an open position via a chain or cable. In the beginning, the cable or chain is connected to the actuation lever via deflection pulleys such that the cable or chain is pulled horizontally by the deflection pulleys and the doors are pulled vertically, where the actuation lever actuates the actuation lever. Later connected to a pulling lug that engages the grip cam of the gripper trolley, the gripper trolley is driven by pulling the cable, and the door is pulled into the open position after operation of the actuating lever and is also suitable. It is fixed in the open position by the mechanism. However, because the chains or cables used can be deformed and deformed during operation due to high tensile forces, the instrument cannot operate the movement mechanism in centimeter-accurate. In addition, the grip cam used in the gripper trolley is exposed to high tensile forces.

These inventions can open and close the coke oven chamber doors vertically, whereby the chamber doors can be left open during aspiration and charging through the opening of the coke oven chamber door. Opening and closing is caused by flexible cables exposed to high tensile and extension forces. This results in a change in the length of the cables, depending on the tensile force applied and the coefficient of expansion of the cable material used. Therefore, due to the change in the length of the cables, the precise position of the doors cannot be accurately determined during the whole use. This creates difficulties while frequently controlling the open process. Moreover, cables can break due to high tensile forces, which is a great risk for the operator. Therefore, the operation of the cables must be broadly protected by corresponding protective guards. In addition, the coke oven chamber doors stick during the course of the coking process due to the coking products deposited on the doors, which results in a different high tensile force depending on the degree of sticking for opening. This requires quite large dimensions of the cables used, thus involving high development and operating costs.

Therefore, it would be advantageous to provide a tension force transmission device for vertical opening and closing of the coke oven chamber door, which is no longer deformed and is not torn due to expansion force. This allows accurate calculations of the operation of the tensioning and stress relief process of opening and closing the coke oven chamber doors and eliminates additional effort to control the installation. In addition, protective devices for workers that inhibit cable breakage are no longer required. As a result, a strain-free tensile force transmission device can be constructed significantly cheaper and more substantially permanently, which also contributes to improving the economics of the overall process.

Therefore, a problem exists to provide a method or apparatus that can reliably operate the door locking mechanisms of the coke oven chambers and does not use expandable cables that transmit tensile force, and is easy to deform or tear. prone) cables can be replaced for the towing of the tow trolley, as well as for the transfer of the tension of the tow trolley to the coke oven chamber door. Finally, the tow trolley should be designed so that no breakage-prone grip cams are needed.

The problem is solved by a device which vertically opens and closes the coke oven chamber doors that lock the coke oven chambers with the tension members provided with break-proof and expansion-resistant traction hooks in front. Here, through the delivery device rigidly connected to the tow trolley along the front of the coke oven chamber, the tow trolley running horizontally on the guide device is connected to the tension member by a connecting mechanism on request and provided with the delivery device. The towing trolley is rigidly connected to the coke oven chamber doors by deflection pulleys, and the coke oven chamber doors are opened and closed vertically when the tension member moves horizontally upon request of the coupling mechanism. It is rigid and has no deformation. The request may be made manually; However, it is preferably done automatically by remote control.

The tension member is typically a hard steel tension rod. Typically, the chain is used as a delivery device, the segments of the chain are less deformed, where hard steel is particularly suitable for the production of segments. Therefore, the tension rod as the tension member is tear-resistant, and the chain made of low strain steel segments is no longer stretched. Therefore, the control of the opening and closing process can be made much easier.

In particular, a deformable stationary oven door actuator for a "heat recovery" type coke oven plant includes:

A coke oven bench or coke oven battery equipped with a plurality of in-line coke oven chambers,

Coke oven chamber doors that are movable vertically and close at the front of the coke oven chambers,

A horizontally movable tensioning element running at least in part along the front of the coke oven chamber, provided with a drive unit and equipped with at least one towing hook,

A towing trolley capable of traveling at least partially along the front of the coke oven chamber and moving horizontally,

A delivery device rigidly connected to the traction trolley, rigidly connected to the coke oven chamber doors via deflection pulleys, and at least temporarily connected to the rigid tension member via the traction trolley.

It also features:

-The tension member is rigid and no deformation,

-The delivery device has less deformation,

-The linkage mechanism connects the towing trolley to the rigid tension member on request.

The apparatus is preferably used on both sides of the coke oven chamber front, ie on the instrument side and on the coke side. The rigid tension member is preferably a tension rod. The delivery device has little deformation or, in a preferred embodiment, little deformation. Preferably, the low strain transmission device is a chain made of low strain steel segments. Low-strain should be understood to mean that the chain varies by a few millimeters in the entire length of the chains during the opening and closing process.

The connecting mechanism for connecting the tow trolley to the tension member in the request of tension force transmission may be of any form. This can be switched from a resting position to a working position, for example by tilt, swivel or lift movements.

Preferably, the coupling mechanism is a sturrup fixed to the tow trolley by a joint and can be pivoted using a lever on request, and by means of the coupling mechanism the tow hook of the tension rod is provided to the stub when the tension rod is moved. When coupled to the retainer and the stirrup is not pivoted, the towing hook can pass unobstructed.

However, the linkage mechanism may also be a slide which is fixed to the tow trolley by a bearing so that it can be moved across the direction of movement of the tow trolley and can be pushed using a lever on demand, whereby the tow hook of the tension rod is tension rod. Is engaged in the hole of the lever provided for this purpose when it moves or the tow hook presses the projection of the slide. Therefore, no stub is needed anymore. Thus, a pulling gripper cam with a hook that may be broken, as taught in the prior art, is no longer needed.

There is an advantage to providing a tow trolley in each coke oven chamber with a coke oven chamber door that can be opened . On the opposite side of the coke oven chamber having a coke oven chamber door that can be operated, additional traction towed by each tension rod, such that both opposite coke oven chamber doors of the coke oven chamber can be operated independently or simultaneously. It is advantageous to provide a trolley.

The tension rod has a drive unit of any type. Due to the drive unit, the tension rod or tension member is moved in the horizontal direction along the front of the coke oven chamber. Preferably, the drive unit has a hydraulic cylinder at at least one end. It is driven by the hydraulic pump of the hydraulic unit. In a more preferred form, the tension rod has a gear motor unit at at least one end. The drive unit can be located at any position as long as reliable transfer of the tension force to the tension rod is possible. If the drive unit is a gear motor unit, the drive unit is preferably arranged on the roof of the coke oven chamber next to the tension member. This enables short range force transmission paths.

The tension rod or tension member may have any traction hook or protrusions for transmitting tension. The traction hook can be adjusted horizontally in the longitudinal direction, for example in a position suspended from the tension member. Typically, tension rods are typically mounted on rollers for improved mobility.

The request mechanism for the stirrup or slide can be of any configuration. The requesting mechanism may be provided with a simple lever for permanent or auxiliary manual operation. Preferably, however, the requesting mechanism has an automated mechanism, whereby the stirrup or slide is moved to the position required for the tension.

Also described is a method of controlling a stationary oven door without deformation of a "heat-recovery" type coke oven plant, which includes the following.

The coke oven chamber doors of a coke oven bench or coke oven plant equipped with a plurality of in-line coke oven chambers must be opened and closed periodically, and

A towing trolley with a linkage mechanism and movable by the guide device along the front of the coke oven chamber stays in the rest position when not requested.

The method is characterized by the following.

The rigid and strain free tension member with a traction hook moves longitudinally along the front of the coke oven chamber upon request,

The connecting mechanism connects the tow trolley and the tension member via a tow hook on request so that the tow trolley with tension member is moved longitudinally along the front of the coke oven chamber, and

The towing trolley opens the coke oven chamber door via a low-tension transfer device and closes the coke oven chamber door upon return of the tow trolley.

The tension member or tension rod may have any form of drive for horizontal movement, which is used as a force after deflection in the vertical direction for opening and closing the coke oven chamber doors. For example, the tension member can be moved by a hydraulic cylinder driven by a hydraulic pump of the hydraulic unit. In addition, the tensioning member can be moved by a gear motor unit located at the end of the tensioning rod, and the tensioning force and the traction movement are transmitted to the tensioning rod, for example by pinion or lantern gear power transmission. The hydraulic element or gear motor can be of any configuration. They can be powered by, for example, combustion engines, electricity or steam. For example, the drive unit is for example located at the end of the tension rod, where the drive unit transmits the tensile force and the traction movement to the tension rod.

The delivery device is low-deformation or preferably non-deformation, which is indicated by a change in length of only a few millimeters during opening and closing. This can be measured in particular in the overstroke facility of the hydraulic cylinder in the tension member, which is set, for example, to a maximum overstroke of 150 mm. Other door lift and chain deformations are compensated by the overstroke.

The drive unit can be operated temporarily or permanently depending on the duration of the coking process and the number of coke oven chambers operated. If the drive unit is temporarily up and running, it may be requested or started by a remote control mechanism, for example. In addition, the drive unit can also be permanently operated and coupled for a displacement procedure.

In addition, a connection mechanism may be requested upon request. This can be done manually or by remote control. Therefore, it is conceivable that the connecting mechanism is requested by the wireless remote control. In addition, remote control via cable is possible. Moreover, in one form of this invention, it is also possible to operate a coupling mechanism, for example from a coke operation mechanism, for example, a coke extraction mechanism.

Preferably, the process according to the invention is used not only for "non-recovery" type but also for "heat-recovery" type coke oven benches. However, all types of coke oven plants are advantageous for this purpose in which the application of the coke oven chamber doors which are opened and closed vertically is advantageous.

The apparatus according to the invention and the method of performing the same have the advantage that the coke oven chamber doors of the coke oven bench or coke oven battery can be opened and closed individually, without requiring space in front of the coke oven chamber, wherein the opening and closing process No deformable cables are used for the transmission of the driving force, which can result in lower precision. In addition, due to the device according to the invention, it is no longer necessary to provide a protection mechanism against cable breaks in the cable normally used. This contributes to improving the efficiency of the overall process.

The process flow of the process according to the invention is described in more detail on the basis of five figures, wherein the process according to the invention is not limited to these forms.

1 shows a coke oven bench with six coke oven chambers equipped with an apparatus according to the invention for elevating coke oven chamber doors.
2 shows a coke oven bench with six coke oven chambers viewed vertically from above.
3 is a side view of the stubble connection mechanism according to the present invention.
4 is a front view of a stubble connection mechanism according to the present invention.
5 is a front view of the slide-type connection mechanism according to the present invention.

1 shows a coke oven bench 1 having six coke oven chambers 2a to 2f with coke oven chamber doors 3a to 3f in the front, where the coke oven chambers 2 are To prepare for charging the doors 3a to 3f are opened by vertical lifting and closed by vertical descent. The coke oven chamber doors 3a to 3f are connected by a chain 4 made of low-deformation segments 4a, which are connected to the towing trolley 5. The tow trolley 5 consists of a trolley of the main body, which is fixed with a rollable suspension 7, and a connecting mechanism 8 connected to a tension rod 6 located above it. On request, the coupling mechanism 8 is closed such that the pull trolley 5 is mechanically rigidly connected to the tension rod 6. The tension rod 6 is moved in the horizontal direction (here right) so that the left coke oven chamber door 3a is lifted up and opened. This exposes the coke cake 9 in the coke oven chamber. Also shown is a drive unit 10 for a tension rod 6 composed of a hydraulic cylinder 10a. The connecting mechanism 8 is coupled to the projection 11 or towing hook of the tension rod 6 by folding up and locking, so that it moves or releases along the tension rod 6 during horizontal movement. It is made up of a stirrup 8a.

FIG. 2 shows a coke oven bench 1 composed of six coke oven chambers, viewed vertically from above. The coke oven chambers 2a to 2f are supported in front of the coke oven chamber in the lateral direction by buck stays 12. A tension rod 6 is shown that can move in the horizontal direction. Preferably, this is done by the drive 10 of the hydraulic cylinder 10a structure. Through horizontal movement of the tension rod 6, the tow trolley 5 is connected to the tension rod 6 on request so that the tow trolley 5 is carried together. This opens the coke chamber door 3 from below.

3 is a side view of the coupling mechanism 8. The connecting mechanism 8 is here composed of a stub 8a which is placed on the bracket 13 by a joint 13a. The stirrup 8a is folded up on request, whereby the stirrup 8a is coupled to the pull hook 11 of the tension rod 6 via the bar 14. In the case of horizontal movement of the tension rod 6, the stub 8a is moved together with the tension rod. The stub 8a is connected to the tow trolley 5 so that the tow trolley 5 also moves during the horizontal movement of the tension rod 6. It is connected back to the coke oven chamber door 3 via chains 4 such that the coke oven chamber door 3 is opened and closed by a horizontal movement. Also shown is a back folded stirrup 8b with a bar 14a through which the traction hook 11 can pass.

4 shows the same connecting mechanism 8 as seen along the tension rod 6. In the tow trolley 5 attached to the roller apparatus 5a, the conveyance installation 15 to which the stub 8a which has the bar 14 is fixed is installed. It is also flipped down here and turned up together with the lever 15a on request so that the traction hook 11 mounted on the tension rod 6 can be coupled to the bar 14 of the stub 8a. The tow trolley 5 on which the chain 4 with the coke oven chamber door 3 is suspended is thus carried together. When the tension rod 6 is pulled back, the stirrup 8a is released, and as a result, the coke oven chamber door 3 is left with the coke oven chamber door open due to dead weight.

5 shows a connecting mechanism 8 composed of slides 8c. It comprises a projection 8d which is pressed by the lateral movement of the slide 8c with respect to the pull hook 11 of the tension rod 6. When the tension rod 6 is to be moved (perpendicular to the paper level), the tow trolley 5 is thus carried and the tow trolley 5 is released when the tension rod 6 is pulled back. This opens and closes the coke oven chamber doors 3. The slide is installed in the conveying device 15 and is operated by the lever 15a.

1: coke oven bench or coke oven battery
2a to 2f: coke oven chambers
3a to 3f: coke oven chamber doors
4: chain
4a: chain segment
5: towing trolley
5a: roller device
5b: guidance device
6: tension rod
7: suspension
8: connecting apparatus
8a: Stirrup
8b: flipped stirrup
8c: slide
8d: protrusion on the slide
9: coke cake
10: drive unit
10a: hydraulic cylinder
11: bracket or tow hook
12: Buckstay
13: Bracket
13a: bracket hinge
14: Bar
14a: flipped bar
15: Carriers for stubble or slide
15a: lever on the carrier

Claims (15)

Coke oven bench 1 or coke oven battery 1 with a plurality of in-line coke oven chambers 2a to 2f,
Coke oven chamber doors 3a to 3f, which are movable vertically and close the coke oven chambers 2a to 2f from the front,
A horizontally movable tension member 6 which travels in at least a portion along the front of the coke oven chamber, is provided with a drive unit 10 and is provided with at least one towing hook 11,
A towing trolley 5, which is capable of traveling horizontally and moving horizontally in the guide means 5a, 5b at least in part along the front of the coke oven chamber,
It is firmly connected to the tow trolley 5, is firmly connected to the coke oven chamber doors 2a to 2f via deflection pulleys and at least temporarily connected to the rigid tension member 4 via the tow trolley 5. As a stationary oven operator without deformation for a "heat-recovery" type coke oven plant 1 comprising a delivery device 4 which should be
Tensile member 6 is rigid and without deformation,
The delivery device 4 has less deformation,
The actuator (8) is characterized in that it connects the towing trolley (5) to the rigid tension member (6) on request. 2. Device according to claim 1, characterized in that the rigid tension member (6) is a tension rod (6). 3. The method according to claim 1 or 2,
The device characterized in that the low-strain delivery device (4) is a chain (4) made of low-strain steel segments (4a). 4. The method according to any one of claims 1 to 3,
The connecting mechanism 8 is a stub 8a which is fixed to the tow trolley 5 by a joint and can be pivoted using the lever 15a on request, whereby the tension rod when the tension rod 6 is moved. The towing hook (11) of (6) is coupled to the bracket provided on the stub (8a), characterized in that the towing hook (11) can pass through unobstructed when the stub (8b) is not pivoted. 5. The method according to any one of claims 1 to 4,
The coupling mechanism 8 is a slide fixed to the tow trolley 5 by a bearing so that the slide 8c can be moved across the direction of movement of the tow trolley 5 and can be pushed using the lever 15a on request. 8c, whereby the tow hook 11 of the tension rod 6 is engaged in the hole 14 of the lever provided for this purpose when the tension rod 6 moves or the tow hook 11 slides. Device characterized in that the projection (8d) of (8c) is pressed. The method according to any one of claims 1 to 5,
Each tow trolley (5) is characterized in that it is provided in each of the coke oven chambers (2a to 2f) having open coke oven chamber doors (3a to 3f). 7. The method according to any one of claims 1 to 6,
The tension rod (6) is characterized in that it has at least one end with a hydraulic cylinder (10a) driven by a hydraulic pump (10) of the hydraulic unit. 7. The method according to any one of claims 1 to 6,
The tension rod (6) is characterized in that it comprises a gear motor unit (10) at at least one end. The method according to any one of claims 1 to 8,
Device characterized in that the tension rod (6) is provided with a traction hook (11) that is adjustable in the longitudinal direction. The coke oven bench 1 equipped with a plurality of in-line coke oven chambers 2a to 2f or the coke oven chamber doors 3a to 3f of the coke oven plant 1 is opened and closed periodically,
A towing trolley 5 having a linkage mechanism 8 and movable by the guide devices 5a and 5b along the front of the coke oven chamber stays in the rest position when not requested.
In the method of controlling the stationary oven door without deformation of the "heat-recovery" type coke oven plant (1),
The rigid deformation-free tensioning member 6 with the traction hook 11 moves longitudinally along the front side of the coke oven chamber upon request,
The connecting mechanism 8a is tensioned with the tow trolley 5 via the tow hook 11 on request so that the tow trolley 5 with the tension member 6 is moved longitudinally along the front of the coke oven chamber. Connect the member 6,
The tow trolley (5) is characterized in that it opens the coke oven chamber door (3a) via a low-deformation delivery device (4) and closes the coke oven chamber door (3a) upon return of the tow trolley (5). 11. The method of claim 10,
The tensioning member (6) is characterized in that it is moved by a hydraulic cylinder (10) driven by a hydraulic pump (10) of the hydraulic unit. 11. The method of claim 10,
The tensioning member (6) is characterized in that it is moved by a gear motor unit (10) with pinion or lantern gear power transmission. 13. The method according to any one of claims 10 to 12,
The drive unit (10) is characterized in that requested by the radio transmission mechanism. The method according to any one of claims 10 to 13,
Process, characterized in that the connection mechanism 8 is manually requested. 14. The method according to any one of claims 10 to 13,
Process, characterized in that the connection mechanism (8) is requested by remote control.

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