KR870003067Y1 - Coke oven door for a horizontal-chamber corking oven - Google Patents

Abstract

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Description

Horizontal Combustion Chamber Coke Oven Door

1 is a cross-sectional view of the inventive coke oven door in a door frame during operation and in a locked position.

FIG. 1 is an enlarged view of part of FIG. 1.

2 is a side view of FIG.

3 is a horizontal cross-sectional view of the locking device.

4 to 15 are enlarged views of the modified embodiment of FIG.

16 to 19 are sealing clcmcnt having a suitable shape for the door according to the present invention.

* Explanation of symbols for main parts of the drawings

1: force transmission device 2: sealing device

3: hollow frame 6: locking device

12 sealing element 14 freerek

21: door stopper 18,37: door frame

26: soft room 27: corner guard

28: depression 36,38: airtight strip

42: flexible hollow room 44: sleeve

The present invention is a horizontal combustion chamber coke oven door which has a high temperature resistant material, which is ejected to an oven combustion chamber and has a door stopper connected to the door member to keep the oven at a distance from the door member. It is about.

The stopper performs several functions with the coke oven door. This suppresses the charge during the caking process, minimizes the heat load on the door members and ensures that the required gases are sent to the central gas collection device in the coke oven.

The door member forms a support bearing against the stopper and also closes the opening towards the door frame for a tight seal. In order to seal between the door and the frame, an additional seal is provided. A spring-loaded bar design is the most common type, which is supported by the door member and pushes against the door frame with a knife eedge when the oven door is closed.

Nevertheless, poor operation of the oven results in damage of the sealing edges.

In the damaged area, coking gas is blown off during operation. Such leaks are undesirable due to environmental effects and problems for the operator.

For this reason, various tests have recently been conducted to solve the leak problem.

Nevertheless, the fundamental solution remains unsatisfactory. Therefore, the object of the present invention is to prevent leakage in the coke oven door.

The present invention is based on the assumption that uneven heating of the oven door occurs during the coking proccss.

This causes the oven door to twist, which increases as the oven height and door length increase.

The warping effect has been dealt with by designing the door with a very heavy structure, but the increase in the user material causes an increase in deformation since it causes differentials in the temperature gradient. Lifting of the door acts against the closing pressure of each oven door and its two locks. These locks act on the coke oven doors at the top and bottom of the door and exert a pressure of up to 15 MP on the door frame.

As shown in the oven operation test, even a perfect sealing strip cannot prevent leakage, since pressure is applied in a straight line to the edge of the sealing strip, causing considerable wear on the door frame and depression on the door frame. Because it is.

According to the present invention, since the heat affecting the oven door is largely removed, the warpage of the oven door due to heat can be prevented. This is accomplished by designing the oven door into several members and one separate force transmittla unit and a separate sealing unit.

The force transmission and closure are connected in as few places as possible. They are characterized by few heat transfer points. The connection point or heat transfer point is limited to the better design used by the present invention, i.e. only one or two connection points or support points will be used which will be used to maintain the closure in the force transmission device when the door is opened or closed.

The pressure point at which the force transmission device supports the sealing element against the door frame is to provide a sealing action during the caking process.

Compared to the conventional single device design, the force transmission device and the sealing device of the present invention have almost no heat cress over. In a design with two joints or supports, these connections are associated with each other in all operations with the appropriate two locks.

Two connectors are used when retrofitting an existing oven to use a door according to the present invention. In this case, due to cost problems, the existing locking device is left as it is.

In new furnaces requiring two or more locks with very large door heights, several connections or supports are left as is. The use of two separate connections makes it possible to install these connections or support points anywhere between the sealing unit and the force transmission device.

The connector may also be limited to one device, in which case it is desirable to install such a connector or support point from the center to the vertical top.

In order to avoid undesired movement, in particular from the vertical, the closure device can be firmly installed as a dummy support device.

Such a device can be installed in a door lift mechanism of a coke oven service device. Auxiliary devices may be in the form of electric, mechanical, hydraulic or pneumatic forces. By designing a new furnace with a low height (4m), it is possible to use only one door lock for the oven door according to the present invention, to remove the connector or support, and also to lift the airtight device as a doorlifting device. It is possible to raise it properly and place it. Various mechanical means can be used to operate the closure device with the doorlifting mechanism. In particular, clamps, hooks or electromagnets can be used.

A door design can be prepared for the separate arrangement of the sealing device and the force transmission device, in which one door performs the sealing function and the other door performs the force transmission function.

The duality of this door function is to enable light weight design, not to bring about overlap of required materials.

The closing device as well as the door device are not subject to any significant forces of bending and twisting. Sealing devices, on the other hand, must be particularly flexible. This has the advantage of easily matching the door frame to seal the device. The thermal load of the seal does not prevent the use of soft seals.

Gas pressure and oven charge pressure spreading do not cause temperature problems if the sealing element comprises a cloth. This is also because the sealing element can be insulated on the combustion chamber side. The seal can be flexible with material thickness and mm. They can be used with minimal force on the door frame. The possibility of low heat transfer in the force train supporting the seal against the door frame can be prevented from twisting the force train so that the design of the force train can be limited to the force required to place the seal against the door frame. have.

Compared to conventional door designs made of cast iron or cast steel as well as welded construction. The present invention allows for a light structure even with commercially available steel sections. By using a hollow shape such a frame leads to optimum stiffness.

At the same time these frames are openings in the connector between the transverse and longitudinal braces, on top and bottom, which are easily ventilated by opening the longitudinal members. The vertical member acts like a chimney, generating airflow and providing excellent cooling.

The light structure of the oven door made possible by the present invention results in remarkable weight savings in the design of the coke oven door. Compared to conventional castings, the door weight is reduced by 2/3, and in excellent cases by 3/4.

The benefits of separating the force transmission from the flexible closure are:

1. Undesirable heat crossover in the force transmission can be avoided.

2. The force transmission area is intact, which makes the opening hollow part useful.

3. The hollow frame withstands external forces caused by the interlock.

4. Sealing yoke provides excellent sealing due to its curved shape (low surface temperature). As well as the minimum temperature capability as well as smaller wall thicknesses (lower temperature gradients), the seal is fully implemented. At the same time, due to the lack of flexibility, it is possible to follow the curvature of the frame in response to externally induced forces. Bulging with the door stripper offers adequate design of the gas channels required for the door.

5. Due to shape stability, in particular due to the flexibility of the force transmission and sealing elements, the required force can be adjusted by way of bolts or springs. Improved operating performance is also obtained.

6. Door structures require lighter weights that provide better structure, maintenance and repair than conventional door designs. It will require less force resulting in lower wear for door removal and installation operations. This is also applied to the seal of the cotton yarn frame.

7. All parts of the door structure may use springs as well as conventional parts, bolts and fasteners.

8. Damage to force transmission or closures can be quickly corrected by relocating these parts. The door structure according to the present invention does not need to be lifted by a jack when repositioning the closure device. Any hoist that is movable in the workplace is sufficient.

9. The sealing elenlent can machine an effective sealing surface parallel to the door frame seal. The parallel arrangement of these sealing parts provides for improved sealing possibilities.

Seals may be used between the sealing surface of the sealing element and the door frame, which may be installed on a conventional door as a non-metal strip from the outside to prevent interstitial leakage. Seals should be fitted with a heat barrier to the oven combustion chamber. Modern string seals and labyrinth seals may also be used instead of seals.

Referring to the configuration of the present invention based on the drawings as follows. As shown in Figures 1 to 3, the coke oven door of the present invention is composed of a force transmission device 1 and a closure device 2. The force transmission device 1 is designed as a hollow frame 3 together with the longitudinal member labeled 4 and the horizontal member labeled 5 in FIG. 2. The longitudinal member 4 is open at the upper and lower ends.

The longitudinal member has an opening at the connection point with the transverse member 5 so that the heated air can be discharged from the hollow frame 3 to the longitudinal member 4 and from there to the upper end of the hollow frame 3.

Hollow frame 3 is composed of ST 37 steel with 4mm thickness and quadrilateral cross section of 80mm × 40mm. Hollow frame 3 may also be made of other cross sections, such as hollow cones, angles, I-beams, T-shapes or channels.

Commercial rolled sections or welded shapes may also be used. These shapes may also be used at other locations.

The doors shown in FIGS. 1 to 3 are retrofits of existing 6 m high horizotal coking chambers with two locks 6 and activated in series by lock bar 7. It is operated by a mechanical lever arrangement not shown.

The connection of the hollow frame three waves is made by a locking device 6 which is bolted to a plate 72 having a locking plate 8 and welded on top and bottom of the horizontal member 5 of the hollow frame 3.

The condenser plate 73 is installed between the locking plate 8-wave plate 72 and acts as an aid to adjust the locking window on the combustion chamber frame.

Locking hooks are not shown. In order for the door lifting device to engage the bolt 60 of the locking device 6, the horizontal member 5 below has a portion indicated by reference numeral 61 to indicate the location of a depression. Reinforcing ribs 62 are added between the lock 6 and the lower transverse member 5.

The horizontal member 5 is welded to the locking plate 8 and clecvis 9. This crevis combines a boss 10 in contact with the closure 2. The boss 10 and the crevis 9 together form a flexible connection to the closure window 2 in the force transmission 1 by means of a connecting bolt 11. Because of the two connectors in the lock 6, the seal 2 is connected at two points with the force transmission 1.

According to FIGS. 1 to 3, the sealing device 2 consists of a sealing element 12 and an insulator 13.

The sealing element 12 is made from a 6 mm thick plate profile as shown in FIG. 16 and fitted with a free leg marked 14 in FIGS. 16 and 3. Depending on the shape, it may be adjusted as a thickness between 4-7 mm.

The back pressure of the oven charge per unit area is not significantly different from the typical oven specification of 4-8.5 mm, so the height of the oven does not have any limitation to affect the thickness or oven width. As a result, the total pressure is separated by the height of the oven. The plate is cut at the top and bottom ends 15 and 16. The saw is bent at 17 in a manner that is bent to the shape shown in FIG. 3 and that welding with other shapes is possible. This provides a bulge and revolving corner shape centered on the sealing element 12, which establishes the parallel position of the Freck 14 in relation to the door frame 18 of the coke oven 19.

Freak 14's funnel arrangement is a straight line 20 waves of door frame 18. The running free rack 14 merges with the plate across the ramp as shown by FIGS. 3 and 16. The depressions formed are filled with insulating material. Mineral fibers, ceramic fibers, glass fibers or light refractory bricks are used as the insulator.

These materials are selected such that the insulator 13 is mounted on the door stopper mount 21a of the door stopper 21 or supported by an anchor appropriate to the door stopper protrusion 21a as shown in FIG. In anchors, the screw anchors are screwed into the sealing element 12 or welded to the sealing material and secured with nuts on the other side of the sealing material. Brackets made of cutangles can also be used, in which a leg is welded parallel to the sealing face 20 to the inclined surface of the sealing element 12.

The door stop device can have various shapes. A light stopper of metal or nonmetal is preferably used in the oven door. The lightweight metal stopper comprises a plate, which is overlapped from the top to the bottom in the door stop device 21 or fixed to the door stop device 21 by bolts or other fasteners. By using a lightweight stopper, conventional parts can be used in the hollow frame 3 and sealing members in the coke oven door.

In the illustrated embodiment, it can be realized to reduce the total weight by more than 3/2 compared to the existing door.

As shown in FIGS. 1 and 3, the door to the coking process design is in the locked position, so that in Frequek 14, the sealing element 12 of the hollow frame 3 is pressurized with a bolt 22 against the sealing face 20 of the door frame 18. Receive. Frame 3's edges are perforated with bolt holes so that bolt 22 can be screwed out from inside nut 23 through the bender member to the outside. The bolt 22 is fixed by the lock nut 24 in each tightening state.

In addition to bolt 22 shown in FIG. 3, a large number of bolts are delivered evenly along frame 3. The spacing between these bolts may be as narrow as 100 mm in the embodiment.

The upper limit of the bolt spacing is 250mm.

This spacing is chosen to achieve a completely even pressure of the sealing element 12 against the sealing face 20.

Each bolt is tightened with a wrench to remove any uneven sealing pressure of the force transmission 1 in the closed position of the coke oven door. At this time, a torque wrench (torque wrench) is used. Instead of nut 23, a continuous flat bar can be used in the hollow frame, which has a threaded hole for bolt 22.

According to FIG. 3 the angular bolt 22 is pressurized against the wedge 25 above the sealing element 12. This wedge is made of metal or nonmetallic material and can be easily exchanged. Nonmetallic wedges have certain advantages in terms of heat transfer. The wedge 25, made of a non-metallic soft material, makes the wedge lighter, facilitating the expansion of the sealing element due to thermal expansion and the continuous movement of the Freerek 14. Being a wear part, this wedge 25 allows for subsequent use of the sealing element 12 even after the bolt 22 has been drilled into its surface, which is achieved by the replacement of this wedge 25. The wedge 25 may be welded to the sealing element 12 as a steel material or may be inserted separately into the welded ring holder or other retainer welded to the sealing element 12.

As shown, there is a soft seal between the freq 14 and the sealing surface 20 of the door frame 18.

This flexible thread 26 consists of mineral fiber or flame retardant plastic and is fixed to the freerec 14 of the sealing element 12 via a corner guard 27, which in turn is fixed to the freer 14.

The corner guard 27 forms an angle to form the flexible chamber 26 only partially on the side of the stopper at the initial position, so that when the sealing element 12 is compressed, the position of the corner guard 27 is opposed to the freer 14 and the position of the flexible chamber 26 According to the deformation, the strip of the corner guard comes into contact with the side of the stopper. In this state, the corner guard 27 prevents the flexible chamber 26 from being deformed by coke gas condensation in the free rack 14 and the flexible chamber 26 during the process. In addition, the corner guard 27, along with the gap state of the prerec 14, pressurizes the sealing surface 20 of the door frame 18 to prevent excessive compression of the flexible chamber 26 and accompanying damage. Under normal conditions, corner guards prevent raw gas condensation.

Corner guard 27 is an iron plate that can be continuously welded to rifle 14 or riveted or bolted.

The sealing capacity of the sealing yoke 12 against the sealing surface 20 having a depression 28 at the rear of the sealing element 12 advantageously influences the sealing of the coke oven door. The sectional deviation caused by the depression 28 provides a higher flexibility of the sealing element 12.

Another embodiment shows additional depression in the longitudinal door position in the transverse direction. The cross section of such a depression is very small. The depression shown is obtained by burning, sawing or compressing the sealing element 12 at the bulging backside.

The resulting opening is sealed with a sheet that matches the appearance of the opening. This provides the backside of the sealing element 12 which is completely sealed. The closed position in FIGS. 1 and 3 shows the sealing element 12 pressed against the combustion chamber frame past the bolt 22 and the force transmission device 1 or the expansion frame 3. The connector of the transverse member 5 with the closure 2 provides sufficient activity of 5-15 mm tolerance for thermal expansion of the closure element 12 by lifting the pivot bolt 11 from the bearing face in the crevis 9. This lifting is very advantageous because a thermal insulation air layer is formed between the bearing surfaces of the crevis, resulting in a reduction of the heat load on the hollow frame.

The bearing face of the connecting bolt 11 is formed by a longitudinally extending hole in the oven door.

The hole is formed because the thermal expansion of the sealing element in the longitudinal direction of the oven is much greater than that in the transverse direction.

In order to connect the hollow frame in addition to the force transmission device, disconnect coupling is used instead of the connector shown in Figs.

Electromechanical and mechanical curling can be used, which is interrupted in the closed position.

4 shows another embodiment of the coke oven door of the present invention, which differs in shape of the sealing element 12 from the preceding FIGS. 1 and 2.

In FIG. 4, the brace 29 visible between the Frequek 14 and the rear face of the sealing element 12 is positioned perpendicular to the sealing face 20, which directly affects the flexibility and movement of the sealing element during the sealing process.

Another embodiment according to the present invention is shown in FIG. 5, wherein the flexibility and movement of the sealing element 12 is influenced by an S-shaped or sinusoidal line between the Frerek 14 and the rear 30 of the support 31. In FIG. 5A, the closure member comprises a channel 74 having a low lateral depth.

This side is made by bending the Freid, and can have various cross-sectional depths, which can eliminate depressions in locks, where existing instruments are used. In the extreme case, the sealing element of FIG. 6 may be configured as a shape such as the flat sheet 32.

7 shows another embodiment of a coke oven door having a spring support bolt 33 instead of a bolt 22.

Spring 3 is disposed in members 4 and 5 on bolt 33. One end of the spring is supported by the member surface, while the opposite end of the spring acts against the disc 35 mounted on the bolt 33.

The disk has a centering boss about 10 mm long, which is connected inside the spring. The disc then abuts against the boss of the bolt (not shown) at the other end of the spring 35. This makes it possible to install the spring 34 and the disk 35 into the members 4 and 5 of the hollow frame with the device of the bolt 33. This bolt is fixed by a pin at one end so that there is no fear of disassembly.

FIG. 8 shows another oven door of the present invention with a hermetic strip of steel instead of soft room 26 and corner guard 27. The sealing strip is marked 36 and is fixed in series with the bolts and the Frerec 12 of the sealing device 2. The sealing strip 36 has an angular shape and is designed to apply pressure to the sealing surface of the door frame 37 with a small rack.

FIG. 9 shows another embodiment with a sealing strip 38 which is lower than a cutting strip shaped in the form of a cutting tool in a conventional kokos oven door. To clamp these airtight strips 38, the prerecks 14 of the airtight element 12 are bent at the outside and end 39. In this embodiment, the sealing strip 38 can be designed to be bolted freely, and can also be replaced by the sealing strip 36 in FIG.

And, the oven door of FIG. 9 has a high end of the hermetic strip 38 and a bolt 22 which acts on the freerec 14, which makes use of the concentrated force of the bolting action on the hermetic strip 38.

FIG. 10 shows another embodiment with wedges 25 and handleable labyrinth seals between Frequek 14 and sealing surface 40. FIG. This labyrinth chamber is formed by two channel portions 41 of metal or non-metal in Freerek l4 of enclosure 2. Each of these grooves is bolted to Freerek 14 and can be replaced. These are pressed on the opening side against the sealing surface 14.

FIG. 11 shows an oven door with a hollow seal 42 between the free rack of closure device 2 and the sealing surface 40 of the door frame. The hollow chamber 42 acts like a spring, which is pressed during closure, as shown in FIG. The flexible rack is sealed with respect to the chamber 42 having a sealing surface 40 to the end of the groove in the prerec 14 and the oven combustion chamber. Figure 12 shows a closure device with a new seal, which consists of a soft material 43 and is supported by a continuous sleeve 44. The sleeve 44 is interchangeable with the freerek 14 of the sealing element 12 and bolted together. The sleeve 44 provides sufficient support for the duct 43 and prevents the combustion of flue gas by the bulging shape on the side of the furnace.

Figure 12a shows another oven door with sleeve 75 instead of sleeve 44.

The sleeve 75 is open at one end to facilitate replacement of the seal 43 and provide sufficient support. This sufficient support can be obtained with some up-bending at the edges.

FIG. 13 shows an oven door in which the prerec 14 of the sealing element 12 is bent against the door frame at its end to form a bent part 45 of the sealing element 12.

FIG. 14 shows the sealing element composed of several parts, which constitute the separating prerex 46 which forms an continuous frame as shown in FIG. 2 with an angle in the cross section. The separating rec 46 has a back 47, It forms a bulge of the sealing element.

A bulge with Frerec 46 and back 47 is secured together with bolts at 48 to form a frame.

FIG. 15 shows the application of the principle shown in FIG. 14 to the multi-part sealing element of FIG. 16-19 are commercial examples of sealing elements suitable for sealing purposes. The shape in Fig. 16 is a so-called plate shape, the shape in Figs. 17 and 18 is a light section and Fig. 19 is a groove shape.

Claims (9)

Locking device 6 during the caking process, having a door stopper 21, which acts as a thermal breaker, which extends into the oven chamber and is connected to the door member and allows the oven to be filled at a given distance from the door member. In the horizontal combustion chamber coke oven door configured to press the door against the door frames (18) and (37) by means of, the door member comprises a separate force transmission device (1) and a sealing device (2) separated And the closure device 2 is held at a point in the force transmission device 1 and is supported against the door frames 18 and 37 by the force transmission device 1 in the closed position of the door. Coke oven door characterized in that it comprises a sealing element (12) above. The coke oven door according to claim 1, characterized in that the closure device (2) is held by at least one end connection in the force transmission device (1). Coke oven door according to claim 1 or 2, characterized in that the force transmission (1) forms a hollow frame (3), which is rigidly connected with the locking device (6). The coke oven door according to claim 3, characterized in that the hollow frame (3) has openings at upper and lower ends. The longitudinal member 4 and the horizontal member 5 of the hollow frame 3 cover the sealing surfaces of the door frames 18, 37, and these members 4, 5 are equal. A coke oven door, characterized in that it has arranged pressure bolts (22). Coke oven door according to claim 1, characterized in that the sealing element (12) has a soft chamber (26) comprising a corner guard (27). The coke oven door according to claim 1, characterized in that the sealing element (12) is provided with a continuous sealing strip which is removable. The coke oven door according to claim 7, characterized in that the hermetic strip is a flexible hollow chamber (42) closed at the oven side. 8. A coke oven door according to claim 7, characterized in that the hermetic strip consists of a soft object (43), which is held in a retainer sleeve (44) with an ovenside phase.