KR830001422B1 - Furnace cover with a sealing structure for sealing between the frames of the furnace - Google Patents

Abstract

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Description

Furnace cover with a sealing structure for sealing between the frames of the furnace

1 is a front view showing that the lid of the furnace equipped with the airtight structure according to the present invention is fixed to the furnace frame.

2 is a front view showing the attachment structure of the sliding plate at the edge of the cover of the furnace.

3 is a front view showing the attachment structure of the edge portion T1 at the edge portion of the cover of the furnace.

4 is a front view showing the closed structure of the long length of the cover of the furnace.

5 is a plan view of FIG.

6 is a cross-sectional view taken along the line (VI)-(VI) of FIG.

FIG. 7 is a cross-sectional view taken along line IV of FIG. 4.

8 is a longitudinal side view showing the closed structure of the short length side of the lid of the furnace.

9 is a front view of FIG. 8;

FIG. 10 is a longitudinal sectional view showing, as another embodiment, the closed structure of the long length of the lid of the furnace. FIG.

11 and 12 are longitudinal side views each showing a conventional sealing structure.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lid of a furnace having a sealed structure for use in sealing various types of furnaces such as coke ovens.

The prior art of the lid of a furnace having such a closed structure is as shown in FIG. That is, as shown in FIG. 11, in the form of the seal member 11 including the spring plate 12 and the edge portion T2, the edge portion is formed by using the elastic force of the spring plate 12. The sharp side of the edge part 13 is good also about the deformation | transformation of the heat | fever of the cover 3 of the furnace frame 2 of the furnace frame 2 of the furnace frame 2 by making the sharp side of (13) abut the frame 2 side of a furnace. There is an advantage in following the framework of the furnace.

In this case, since the spring plate 12 is directly sandwiched between the lid 3 and the pressure port 22 of the furnace, the pressure port 22 is pressed as the pressure bolt 46 to press the edge 13. There was a drawback that the spring plate 12 slides against the lid 3 of the furnace when moving towards the frame 2 of the furnace.

In particular, since the spring plate 12 preferably uses a relatively thin one because it is preferable to increase the deformation amount, when the spring plate 12 slides directly with respect to the lid 3 of the furnace, the yaw of the surface of the furnace lid 3 is required. There are defects in that the spring plate 12 is deformed or broken due to iron, or a gas leak occurs between the spring plate 12 of the lid 3 of the furnace.

The present invention has been made to solve the above-mentioned drawbacks, and the sealing structure for sealing between the furnace cover and the furnace frame according to the present invention can be moved in a remote or close direction to the furnace frame. The pressure port attached to the cover of the furnace and the pressure port, which is located between the electric pressure port and the cover of the furnace, move according to the movement of the pressure port, and the front end is made from a seal member configured to abut the frame of the furnace. The seal member, which is extended from at least two long lengths of the cover, is a presser that is fitted between the spring plate, the edge attached to the end of the spring plate, and the cover of the furnace and the spring plate. It consists of sliding plates installed between the functioning rectangular plate part and the frame of the furnace, and the sliding plate slides as it moves toward the frame of the furnace. , Via the spring plate causes the electric contact with the frame of the edge parts of the furnace.

In this way, the spring plate constituting the seal member is sandwiched between the spherical plate portion and the sliding plate so that they slide in one body, thereby avoiding the spring plate directly sliding on the cover surface of the furnace. Therefore, even if the spring plate is made relatively thin, the breakage of the spring plate is prevented, so that a good sealing effect can be expected.

The main object of the present invention is to provide an airtight structure that can seal the furnace cover and the furnace frame at a low cost.

Another object of the present invention is to provide a closed structure that can be installed relatively simply in the existing furnace.

Still other objects and advantages of the present invention will become apparent from the following description.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT Hereinafter, the present invention will be described in detail with reference to the accompanying drawings, in which FIG. 1 shows that a spherical furnace cover 3 is attached to the furnace frame 2 located at the periphery of the opening of the coke oven 1. This furnace cover (3) has a pair of upper and lower latches (5) attached to the frame (2) of the furnace and attached to the frame (2) of the furnace through a support shaft (4). It is comprised so that it may be pressed and fixed to the frame 2 of a furnace by engaging with 6).

As shown in FIG. 2, a notch 7 is provided at four corners of the lid 3 of the furnace, and a sliding plate 8 woven into a sphere is fitted to the outer circumference of the lid 3 of the furnace. Between the notched surface 7 and the sliding plate 8, the long plate 9 which abuts on the notched surface 7 and the 3 welded to the long plate 9 and the sliding plate 8 The gas is sealed by being closed by the rectangular sealing plate 10.

The long length 3a of the outer periphery of the lid 3 of the furnace is formed in the form of the seal member 11 from the spring plate 12 and the edge portion 13 and the shorter length 3b of the seal member 11 as described later. The sealing member 11 is sealed by the sealing structure of the type which consists only of the edge part 13, respectively. This structure is also adopted in the conventional furnace (see FIG. 12), but this simply causes the edge portion 13 to be directly sandwiched between the lid 3 and the pressure port 22 of the furnace.

In this case, since the edge portion 13 is made of special steel, the contact surface with the surface of the lid 3 of the furnace may be deteriorated and gas leakage may occur.

In order to prevent the leakage of such gas, the conventional one has a structure in which the width of the edge portion 13 is increased so as to increase the contact area of the lid 3 surface with the edge portion 13. However, since the attachment position of the bolt 30 and the nut 32 for attaching the pressure port 22 or the like to the cover 3 of the furnace is restricted, the insertion of the bolt 30 into the edge portion 13, etc. You must install cutouts.

In this case, since the edge portion 13 is manufactured as a special steel, there is a drawback in that it requires manual processing for the cutting portion and the like, and the cost is high. In view of this point, in the present invention, the sliding plate 8 is provided between the lid 3 and the edge portion 13 of the furnace, and the sliding plate 8 is processed by processing both sides of the sliding plate 8, which is relatively easy to process. 8) and the contact surface between the lid 3 of the furnace and the sliding plate 8 and the edge 13 can be made good, there is no fear of leakage of the gas, the edge 13 is difficult It does not require machining, and it is also possible to increase the contact area. The four corner portions of the lid 3 of the furnace where these two types of structures intersect are as shown in FIG.

In FIG. 3, the spring plate 12 is made of stainless steel, and the cross-sectional shape is U-shaped, and one opposite piece portion is fixed to the sliding plate 8, and the other opposite piece portion has a edge portion ( 13) is fixed.

The spring plate 12 and the sliding plate 8 are fixed by the bolts 14 which are arranged at a suitable interval in the elongated direction. (15) is a seat plate.

The spring plate 12 and the edge 13 are fixed to the bolts and nuts 17 disposed along the back contact plate 16 along the entire length of the spring plate 12 at an appropriate interval in the elongated direction. It is done by. End portions of the edge portion 13 on the long length 3a side and the edge portion 13 on the short length 3b side are abutted and welded to each other, and both ends of the spring plate 12 are springs. It is closed by the end plate 19 welded to the board 12. As shown in FIG.

On the outer surface of the spring plate 12 is located the end of the edge portion 13 of the short length (3b) side, the end and the end plate 19 and the end and the bolt hole of the end plate 19 The bolts and nuts 20 inserted through were fixed to each other via the packing 21. 4 to 7 show the details of the closed structure on the long length 3a side of the lid 3 of the furnace, and the dowels 22a and 22b are spherical plate portions which act as pressing holes. (22a) and (22b) are connected as one through the connecting plate part (23).

Both spherical plate portions 22a and 22b are formed thick in a shape inclined toward the furnace frame 2.

In the center of the two spherical plate portions 22a and 22b, long holes 24 are provided in the elongated direction, and ribs 25 are provided on both sides of the long holes 24, respectively.

The ribs 25 reach the center in the elongated direction from the ends of the thinner plates 22a and 22b, and the ends of the ribs 25 are opposite to the furnace frame of the sliding plate 8. It is in contact with the part 8a.

(26) is a sandwich plate abutted on the side surfaces of the spherical plate portions 22a and 22b, and has a thick thickness inclined toward the thinner side of the spherical plate portions 22a and 22b, and the hole 27 in the center thereof. Have The holes 27 of these sandwiching plates 26 and the holes 24 of the spherical plate portions 22a and 22b have cutout portions of the sidewalls of the lid 3 of the furnace and the cutouts of the sliding plate 8. The bolt 30 inserted into the 29 is inserted.

The sliding plate 8, both spherical plate portions 22a, 22b and the pinching plate 26 are fixed to each other by attaching and fixing the nut 32, which is screwed through the spring washer 31, on both ends of the bolt 30. To the lid 3 of the furnace.

A projection piece 33 is provided in the above-mentioned connection plate part 23, and one end of the normal support frame 35 which comprises the spring device 34 is screwed in the screw hole provided in the projection piece 33. The support frame 35 slides the compression compression 36 in contact with the rear surface 13a of the edge portion 13 in a sliding manner.

In the support frame 35, one end is engaged with the partition part 36a of the compression compression 36, and the elastic body 37 which presses the compression compression 36 toward the edge 13 is arrange | positioned. The elastic body 37 is formed from a coil spring, and the other end thereof is engaged with a hollow shaft-shaped adjustment screw 38 attached to the support frame 35. Reference numeral 39 is a ring-shaped stopper which is fixed in the support frame 35 and engages with the partition portion 36a of the compression compression 36.

Reference numeral 40 is a lock nut that is wound around the support frame 35, and 8c is an engagement portion provided over the entire length of the axial surface of the sliding plate 8 so as to be engaged with the end of the spring plate 12. As shown in FIG.

8 and 9 show details of the closed structure toward the short length 3b of the lid 3 of the furnace, and the opposite end of the furnace of the edge portion 13 is the entire side surface of the sliding plate 8. It engages with the engaging part 8c provided over the length of. The frame (2) end of the furnace (8) of the sliding plate (8) slightly protrudes from the side of the cover (3) of the furnace, and the frame (2) end of the furnace of the edge (13) is the sliding plate (8) It protrudes further and abuts the frame 2 of a furnace.

(41) is a plate that acts as a pressure port, the plate 41 is formed in an inclined shape in which one end in the elongated direction is thickened, the end of the edge portion 13 in the contact portion formed from the thickened end Abuts on the side opposite to the furnace cover.

On both sides of the back surface of the plate body 41, the love 42 extending from the thin end to the center of the longitudinal direction is protruded, and the end of the rib 42 is the furnace frame 2 of the sliding plate 8. ) Opposite end (8a).

In the center of the plate body 41, a long hole 43 along the elongated direction is provided.

44 is a pinching plate which abuts on the plate body 41, has the thickness of the inclined shape which became thick in the thickness of the plate body 41, and has the hole 45 in the center. In the holes 45 of these sandwiching plates 44 and the long holes 43 of the plate body 41, the cutouts 29 of the sidewalls of the lid 3 of the furnace 3 and the sliding plate 8 are attached. The bolt 30 inserted into the tube is inserted.

The sliding plate 8, the edge portion 13, the plate body 41 and the pinching plate 44 are one by the attachment and fixing of the nut 32 screwed through the spring washer 31 at the front end of the bolt 30. To the lid 8 of the furnace.

Next, the operation will be described.

The edge portion 13 on the shorter length 3b side protrudes toward the frame 2 of the furnace together with the sliding plate by hitting the head of the plate 41 with a hammer or the like. At this time, since the sliding plate 8 is formed in an inclined surface and is attached and fixed together with the pinching plate 44 as the bolt 30, the edge 13 which protrudes once cannot be easily returned.

In addition, the sliding plate 8 provides the following effects. That is, even in the form of forming the seal member 11 using only the edge portion 13, the edge portion 13 is directly connected between the lid 3 and the pressure port 22 of the furnace as shown in FIG. Or the edge 13 is made of special steel, the contact surface with the surface of the lid 3 of the furnace may be deteriorated and gas leakage may occur.

In order to prevent such leakage of gas, there existed a structure which enlarges the width | variety of the edge part 13, and enlarges the contact area of the edge part 13 and the cover 3 of the furnace. However, since the attachment position of the bolt 30 and the nut 32 for attaching the pressure port 22 or the like to the cover 3 of the furnace is restricted, the view for inserting the bolt 30 into the edge portion 13 is limited. You had to install the back. In this case, since the edge portion 13 is made of special steel, it requires manual processing for the cutting portion and the like, and there is a disadvantage that the cost is high.

In view of this, since the sliding plate 8 is provided in the present invention, the sliding plate 8 is disposed between the surface of the sliding plate 8 and the lid 3 of the furnace by processing both sides of the sliding plate 8 which is relatively easy to process. And to improve the contact surface between the sliding plate 8 and the edge portion 13, and to protrude the sliding plate 8 from the side of the cover 3 of the furnace toward the frame 2 of the furnace. As a result, the edge portion 13 does not require any processing, and the contact area between the sliding plate 8 and the edge portion 13 can be increased.

The edge 13 of the elongated length 3a is pressed by the elastic body 37 via the compression shaft 36 of the spring device 34 and the frame 2 of the furnace by the flexibility of the spring plate 12. It is elastically pressed to. Therefore, even if slight deformation occurs in the lid 3 or the furnace frame 2 during operation of the furnace 1, the close contact between the edge 13 and the furnace frame 2 is always maintained. .

When a large amount of deformation occurs in the lid 3 of the furnace and gas leakage occurs, the edge 12 is projected to be closer to the frame 2 of the furnace by hitting the heads of the spherical plate portions 22a and 22b. It can be done as much as possible. In other words, by hitting the spherical plate portions 22a and 22b, the edge plate 13 and the edge 13 are further protruded toward the frame 2 of the furnace.

At this time, since the support frame 35 holding the compression shaft 36 is attached to the connecting plate portion 23 connected to the two-shaped plate portions 22a and 22b, despite the amount of protruding from the edge portion 13, The position of the state of the edge portion 13 and the support frame 35 is always constant. Therefore, the edge 13 can be pressed against the frame 2 of the furnace with a constant force at all times without any significant increase or decrease of the spring pressing force accompanying the positional movement of the edge as seen in many conventional forms.

In addition, since the spherical plate portions 22a and 22b are provided close to both sides of the support frame 35, the edge portions 13 are projected by simultaneously or alternately hitting the head portions of both spherical plate portions 22a and 22b. Even if this is done, the relative posture between the edge portion 13 and the support frame 35 is extremely low, and there is no change in the pressure force due to the curvature of the elastic body 37.

This ensures reliable sealing. This pressing pressure can be adjusted by the adjusting screw 38.

In addition, since the spring plate 12 is vulnerable, it is necessary to prevent excessive deformation at the time of hitting and protruding. On the other hand, as in the embodiment, the furnace 8 of the sliding plate 8 protrudes more than the spring plate 12 so that the sliding plate 8 is not exposed. Abuts against the frame 2 to serve as a stopper, and prevents excessive deformation of the spring plate 12.

In addition, when the lid 3 of the furnace is removed from the main body of the furnace 1 and the edge portion 13 is freed, the elastic body 37 is formed by contacting the stopper 39 with the partition 36a of the compression compression 36. Excessive pressurization of the edge portion 13 by) is prevented. The sum total of the pressing force by the elastic body 37 of each spring apparatus 34 which presses the edge part 13 of elongate length 3a is the pressure by the latch apparatus which presses the whole cover 3 of a furnace. It is advisable to contact 20-40% of the pressure.

Thereby, the pressurization force by the elasticity of a latch apparatus acts as a force which presses the edge part 13 of the short length 3b side in which 40-60% has no elastic force. This firmly presses the edge 13 of the shorter length 3b and covers the frame of the furnace 2 and the furnace generated during normal operation while sufficiently supporting gas leakage from the edge 13. It can be elastically absorbed as the sealing member 11 which includes the spring plate 12 of the length 3b toward the heat deformation with (3).

Therefore, the work of hitting the edge portion 13 on both sides 3a and 3b is sufficient only as an initial state of attaching the cover 3 of the furnace to the body of the furnace, and the operation is carried out while carrying out a risk. Is to do less work.

In addition, the damage to the seal surface and the edge portion 13 of the furnace frame 2 is reduced and durability is improved by making it possible to reduce the work to be taken out in this way.

As apparent from the above description, a very simple structure has a good sealing effect, and it is particularly noted here that even when the sealing member 11 of the shorter length 3b side is formed only from the edge portion 13, it is also elongated. Even when the sealing member 11 of the length 3a side is formed from the spring plate 12 and the edge portion 13, a slight bolt is applied to the lid 3 side of the furnace as well as to the frame 2 side of the furnace. (30) It is said to be good only by providing the attachment hole 28 for insertion.

This can be easily attached to the existing furnace 1, and the effect is large.

In addition, the sealing member 11 is made up of only the edge portion 13 on the short side 3b side, and the sealing member 11 is formed on the long side 3a of the spring plate 12 and the edge portion 13. Mounting what is made from) has a significant advantage as described below.

That is, when the lid of the furnace is thermally deformed, the lid 3 of the furnace is thermally deformed largely in the direction of the long side of the furnace, so that the shorter length 3b of the lid 3 of the furnace is compared with the longer length 3a. Thus, the gap with the framework of the furnace becomes large. Therefore, also in the short length 3b side of the lid | cover 3 of a furnace, the thing of the form which comprises the sealing member 11 from the spring board 12 and the edge part 13 is employ | adopted, and the spring board 12 is also used. It is necessary to make it wide.

However, the distance between the lid cover 3 of the furnace 3 and the furnace cover short length 3b of the furnace frame 2 and the edge portion 13 of the furnace frame 2 that can be contacted is short. Since there is no room for attaching the edge portion 13 by the large spring plate 12, the edge portion 13 is removed by the spring plate 12 when replacing the edge portion of the lid 3 of the furnace. It is not possible to adopt a supporting structure.

If the point adopts the sealing member 11 which consists only of the edge part 13 to the short length 3b of the lid | cover 3 of a furnace like this embodiment, it is conventionally easy to attach it to the existing furnace 1, too. have.

In addition, if the upper and lower pairs of bars 5 are securely fastened to the vicinity of the short length 3b side of the furnace lid 3, the thermal deformation appears on the long length 3a of the furnace lid 3, The heat deformation is absorbed by the spring plate 12 on the side of the long length 3a so that both lengths 3a and 3b are surely sealed.

In addition, the short cover (3b) without the spring plate (12) interposed between the cover (3) of the furnace and the cover (3) of the furnace with respect to the furnace frame (2) when the cover (3) is fastened and fixed to the furnace frame (2). There is also an advantage of facilitating the positioning of.

In addition, if the fixing structure between the edge portion 13 and the spring plate 12 on both sides 3a and 3b at the four corners of the lid 3 of the furnace is the structure described above in conjunction with FIG. When the necessary edge 13 is replaced each time, the replacement can be performed as a simple operation only by attaching and detaching the four corners weld 18 and attaching and detaching the bolt and nut 17 for attaching the edge.

Moreover, since each member, such as the edge part 13 and the spring plate 12, is fixed by being tightened almost with a bolt and a nut, the positional displacement of welding does not arise and it is less restrictive, and therefore the spring plate 12 ) Can be easily deformed to improve sealing of the gas by the edge portion 13.

In addition, by tightening and fastening the bolts and nuts in this way, each member can be changed independently, thereby simplifying maintenance.

FIG. 10 shows a modification of the seal member 11 on the long length 3a side of the lid 3 of the furnace, in which the edge portion 13b attached to the oil end side of the spring plate 12a is L-shaped in cross section. It is comprised so that it may become a type | mold.

Since the others have the same structure as described above, the description is omitted by attaching the same reference numerals.

When the edge portion 13b has an L-shaped cross section as in this modified example, the edge portion is increased even if the width of the spring plate 12a is increased and the main edge of the furnace frame 2 of the edge portion 13b is improved. The contact position with respect to the furnace frame 2 of the front end of (13b) can be approached to the cover 3 of the furnace.

Alternatively, at a ratio of widening the spring plate 12a, the thermal gas contact area with respect to the spring plate 12a can be reduced, thereby preventing heat damage or corrosion of the spring plate 12a by the heat gas. Good sealing effect can be secured.

Although the embodiments of the present invention have been described above, various modifications are possible without particularly limiting the structure of the embodiments.

For example, in Figs. 6 and 7, the cross-sectional shape of the spring plate 12 is V-shaped, and in Fig. 10, the cross-sectional shape of the spring plate 12a is L-shaped. ), The cross-sectional shape of the cross section is made to be in a complicated curved shape, and the followability to the furnace frame 2 of the edge portion 13 is further improved.

Claims (1)

The pressure port attached to the cover of the furnace, which is movable in a direction that is remote or close to the furnace frame, is located between the pressure port and the cover of the furnace and moves in accordance with the movement of the pressure port, and the front end thereof is the frame of the furnace. In a lid of a furnace having a closed structure for sealing between a frame of a furnace made of a seal member configured to abut on a surface thereof, at least two long lengths (3a) (3b) of the lid (3) of the aforementioned furnace facing each other. In this case, the seal member 11 serves as a pressurization port which is electrically interposed between the spring plate 12 and the edge portions 13 and 13b attached to the end of the spring plate, and the lid of the furnace and the spring plate. It consists of sliding plates 8 respectively provided between the acting spherical plate portions 22a and 22b and the furnace frame 2, which slide and slide according to the movement of the sphere plate and the furnace frame side. Through the spring plate, the edge is pulled into the furnace frame. A cover of a furnace having a closed structure for sealing between the frame of the furnace, characterized in that the contact.

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