JPH077301Y2 - Canopy device for riser of coke oven - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a canopy device for opening and closing an upper end opening of a rising pipe of a coke oven.

[Conventional technology]

As shown in FIG. 2, at the top of the coke oven 21, an ascending pipe 11 for recovering the coke oven gas generated during coal carbonization is arranged in each coking chamber of the coke oven 21. The upper end of the rising pipe 11 is connected to the dry main 20.

A canopy 1 for opening and closing this opening is provided at the upper end opening of the ascending pipe 11, and a connecting pipe portion between the ascending pipe 11 and the dry main 20 is provided with an edge for controlling communication and interruption of the gas recovery passageway. Cut dampers 17 are provided respectively.

The canopy 1 is fixed to a canopy opening / closing arm 4 attached to an immovable portion such as an ascending pipe 11 so as to be pivotally displaceable. By rotating the canopy opening / closing arm 4 with a canopy opening / closing cylinder 9, the canopy 1 The edge-cutting damper 17 is fixed to an edge-cutting damper opening / closing arm 18 mounted on the immovable portion so as to be pivotally displaceable. Opening / closing cylinder 19
By rotating with, communication by the edge cutting damper 17
It is designed to perform a shutoff operation.

Closure of the upper end opening of the ascending pipe 11 by the canopy 1 is obliged to be a water-sealing type in accordance with the provision of a special law that regulates the prevention of scattering of harmful substances (specialized substances) from the upper end opening of the ascending pipe 11.

As shown in FIG. 3, the structure of the water sealing portion by the canopy 1 at the upper end opening of the rising pipe 11 is such that the rising pipe main body 12 has an upright cylindrical shape.
Ascending pipe 11 with refractory 13 on the inner wall of the rising pipe
A canopy water seal seat 14 having a ring-shaped water seal seat groove 15 opened upward is provided on the upper end surface of the canopy water seal seat 14, and the canopy 1 is raised by the canopy 1 to the peripheral edge of the bottom surface of the canopy water seal seat 15. When the upper end opening of the pipe 11 is closed, a sealing ring plate 2 that penetrates into the water sealing groove 15 is provided in a hanging shape.
11 When the upper end opening is closed, the sealing ring plate 2 enters the water sealing water m filled in the water sealing groove 15,
The canopy 1 ensures the sealing of the upper end opening of the rising pipe 11.

In the water sealing part by this canopy 1, the water sealing height H at which the water sealing is not broken against the internal pressure of the generated coke oven gas and the negative pressure due to the high pressure anhydrous ejection during coal charging.
A value of about H = 100 mm is required as (dipping height of the sealing ring plate 2 in the water sealing water m). Further, the groove width W of the water seal groove 15 is different from that of other equipment around the existing rising pipe 11,
Alternatively, it cannot often be set to a large value due to the occurrence of interference with moving equipment such as a coal car, and when the groove width W is increased, the evaporation surface area of the water sealing water m is correspondingly increased, and replenishment of the water sealing water m and It is regulated to a small value due to reasons such as the space required for drainage facilities and the increase in scale. Further, the canopy 1 itself is likely to be thermally deformed by the heat during the carbonization of the coke oven and the flame from the ascending pipe 11 when the upper end opening of the ascending pipe 11 is opened, and the sealing ring plate 2 is also accompanied by the thermal deformation of the canopy 1. Deform.

FIG. 3 shows a typical structure of a conventional canopy device provided with a water sealing means. The tip of the arm bearing 16 fixed to the ascending pipe 11 which is a stationary part is moved up and down by rotation. At the tip of a canopy opening / closing arm 4 whose central portion is pivotally supported by a rotating shaft 5, a canopy 1 having a sealing ring plate 2 hung vertically on the lower surface is attached in a hanging manner, and extends behind the canopy opening / closing arm 4. The canopy opening / closing cylinder 9 is connected to the base end.

In the structure of this canopy device, the canopy 1 is attached to the tip of the canopy opening / closing arm 4 by standing upright at the center of the upper surface of the canopy 1 so that the canopy 1 can be rotated in the same direction as the canopy opening / closing arm 4. There are a structure in which the canopy coupling shaft 6 is mounted via the canopy bearing 3 and a structure in which the canopy 1 is directly and immovably mounted at the tip of the canopy opening / closing arm 4.
When the canopy is rotatably attached, tilt limiting stoppers 10 for restricting the tilting amount of the canopy 1 are provided at the four canopy opening / closing arms facing the upper surface of the canopy 1.

[Problems to be solved by the device]

In the conventional canopy device having such a configuration, when the canopy opening / closing cylinder 9 is operated to rotate the canopy opening / closing arm 4, the canopy opening / closing arm rotation shaft 5 is pivotally displaced together with the canopy 1. When the canopy 1 is fixedly attached to the canopy opening / closing arm 4, the lower end edge of the ring plate 2 for blocking is the third one.
As the canopy is displaced along the locus L ₁ in the figure, the canopy opening / closing arm rotation shaft 5 side easily interferes with the edge of the water lid 14 of the canopy, and conversely the canopy 1 can be rotationally displaced with respect to the canopy opening / closing arm 4. When it is attached, it will be displaced along the locus L ₂ in FIG. 3, and it will be easy to interfere with the edge of the canopy water seal 14 on the side opposite to the canopy opening / closing arm rotating shaft 5, and this interference causes the canopy. There is a problem in that the upper end opening of the ascending pipe 11 cannot be sealed by the method described in 1.

Further, due to thermal deformation or manufacturing accuracy of the canopy 1, the weight balance is lost along the rotating direction of the canopy 1 provided with the sealing ring plate 2, and therefore the canopy 1 is inclined and cannot be completely closed (water sealed state). There was a problem that things happen frequently.

In order to prevent the adverse effect of the canopy 1 from being tilted in some cases, a tilt limit stopper 10 is provided. However, the tilt limit stopper 10 regulates the tilt, so that the canopy 1 is properly closed to achieve a proper closure. There is an inconvenience that such a slanting displacement operation is blocked and the closing cannot be achieved.

The present invention has been devised to solve the above-mentioned problems in the prior art. When the canopy is used to open and close the upper opening of the ascending tube, the canopy is tilted in accordance with the opening and closing pivoting motion, thus providing a complete The purpose is to achieve the closing smoothly and safely and to achieve the opening safely.

[Means for Solving the Problems]

Means for achieving the above object is to have a canopy opening / closing arm that is rotatably supported by an immovable portion such as an ascending pipe, and that vertically moves the tip of the canopy opening / closing arm. It is rotatably displaceable in the same direction as the open / close arm and is axially connected in a hanging manner at the center of gravity.
To have a canopy with a blocking ring plate hung vertically on the lower edge, in order to incline this canopy from a horizontal position, a load is applied to the upper surface of the canopy opening / closing arm that is closer to the immovable part than the center of gravity of the canopy. It has a weight to let

As a place to install the weight that tilts the canopy by the action of load, it is good to face the upper surface of the canopy between the tip of the canopy opening and closing arm and the tip, and to suspend it at this place. Good to install.

Further, as the weight, for example, the center of gravity is eccentrically located below the center of rotation and the contact surface with the canopy is formed into an arc shape. It is preferable to axially couple the canopy opening / closing arm in a position facing the upper surface of the canopy between the pivotally supporting portion and the tip end thereof so as to be rotatable and displaced in the same direction as the canopy opening / closing arm.

[Action]

When the canopy opening / closing arm is in an open position with its tip raised, the canopy that is rotatably and axially coupled to the tip of the canopy opening / closing arm and is suspended and held by the weight action of the weight. The tilted posture is such that the rotation axis side is lowered.
The inclination of the canopy is set by the weight load and the vertical distance range in which the weight exerts a load on the canopy.
The locus of movement of the lower edge of the blocking ring plate is set so as to pass between the loci L ₁ and L ₂ in FIG.

Therefore, when the canopy opening / closing arm is rotated in the closing direction, first, the lower edge of the sealing ring plate portion on the rotation axis side of the canopy opening / closing arm does not interfere with the water sealing seat edge of the canopy. As the canopy opening / closing arm enters the groove, and as the canopy opening / closing arm rotates in the closing direction, the remaining sealing ring plate part is water-sealed by being guided by the sealing ring plate part that has previously entered the water seal seat groove. The entry into the seat groove is smoothly performed, and thus the complete closure by the canopy is achieved.

On the contrary, when the canopy opening / closing arm is rotated from the completely closed state and the canopy is lifted, the canopy is moved only by the action of the weight when the canopy is lifted and displaced. Is tilted in the direction of upward displacement, and the ring plate portion for sealing on the side opposite to the rotation axis side of the canopy opening / closing arm is lifted and removed from the water sealing groove without interfering with the canopy water sealing edge. When the canopy opening / closing arm is further moved up and displaced, the inclination of the canopy is a constant value set by the weight, that is, the blocking ring plate part on the rotation axis side of the canopy opening / closing arm interferes with the water sealing edge of the canopy. Without stopping, it stops at the same inclination as when it entered the water seal groove, and the ring plate for sealing is lifted and released from the water seal groove without interfering with the canopy water seal edge, and the opening is achieved. To be done.

In addition, during opening operation, even if interference occurs with the canopy water seal edge of the sealing ring plate on the rotation axis side of the canopy opening / closing arm, the canopy is mounted so that it can rotate against the weight load. As a result, the canopy is easily tilted in the direction away from the interference, which allows the opening operation to be smoothly and easily performed without causing any interference due to the interference.

〔Example〕

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

A canopy water seal seat 14 that forms a water seal seat groove 15 that is filled with water seal water m and opens upward at the end surface of the opening of the rise pipe 11 that is composed of the refractory 13 on the inner wall of the rise pipe and the main body 12 of the rise pipe. Is attached, and an arm bearing 16 is provided outside the upper end of the rising pipe 11 near the canopy water seal seat 14 side.

A substantially doglegged canopy opening / closing arm 4 is attached to the arm bearing 16 at its center so as to be rotatable by a canopy opening / closing arm rotation shaft 5 along a vertical plane. The base end of the arm 4 is connected to the tip of the piston rod of the canopy opening / closing cylinder 9 fixed to a stationary position,
The operation of the canopy opening / closing cylinder 9 causes the canopy opening / closing arm 4 to pivotally displace with the canopy opening / closing arm rotation shaft 5 as a rotation axis to vertically displace the tip.

At the tip of the canopy opening / closing arm 4, a canopy 1 in which a sealing ring plate 2 is hung on the lower surface periphery is provided, and a canopy opening / closing arm 4 is provided by a canopy coupling shaft 6 via a canopy bearing 3 erected from its center of gravity.
It is axially connected in a hanging manner so that it can rotate in the same direction as.
That is, the canopy opening / closing arm rotating shaft 5 and the canopy connecting shaft 6 are parallel to each other.

At a portion of the canopy opening / closing arm 4 facing the upper surface of the canopy 1 between the canopy opening / closing arm rotation shaft 5 and the canopy coupling shaft 6, a weight 7 formed in a shape is formed. A weight attachment shaft 8 rotatably supports the canopy 1 and the canopy opening / closing arm 4 in a hanging manner in the same direction. The tip portion of the weight 7 that comes into contact with the upper surface of the canopy 1 has a spherical arc shape whose surface is extremely slippery. Further, the load and the length of the weight 7 are set according to the inclination angle of the canopy 1 required when the closing is achieved.

The weight 7 is not limited to the configuration of the illustrated embodiment, and may be, for example, a spherical shape that is hung from the canopy opening / closing arm 4 via a chain of a certain length. However, in this case, there is a problem that the posture of the weight 7 with respect to the canopy 1 is not stable. In addition, as a place to attach the weight 7,
As in the illustrated embodiment, the canopy opening / closing arm 4 that is rotationally displaced integrally with the canopy 1 is preferably used. When the weight 7 is attached to a position other than the canopy opening / closing arm 4, the weight 7 synchronizes with the canopy 1. It becomes difficult to obtain the rotational displacement.

[Effect of device]

Since the present invention has the above-mentioned configuration, it has the following effects.

Since the canopy is tilted by the load action of the weight so that the canopy does not interfere with the water sealing edge of the canopy, closing and opening of the ascending pipe by the canopy can be achieved extremely smoothly, safely and surely.

Inclining the canopy to a certain posture is due to the load action of the weight, and therefore its operation is always stable and reliable.

Even if some interference occurs, the force acting on the canopy due to this interference is much larger than the acting force due to the weight load, so the canopy escapes the interference against the weight load action. The canopy can be easily tilted in the direction, whereby the canopy can be smoothly and reliably closed and opened even if the canopy that has been slightly thermally deformed or the groove width of the water seal groove is small.

Since the weight is simply added to the structure in which the canopy is rotatably attached to the canopy opening / closing arm in a hanging manner, the overall structure is simple, and whether it is a new installation or an existing installation can be implemented easily and satisfactorily. it can.

[Brief description of drawings]

FIG. 1 is a longitudinal sectional view of an essential part showing a closed state of an embodiment of the present invention. FIG. 2 is an overall view showing an example of the rising pipe device. FIG. 3 is an explanatory view showing a conventional example. DESCRIPTION OF SYMBOLS 1; canopy, 2; sealing ring plate, 3; canopy bearing, 4; canopy opening / closing arm, 5; canopy opening / closing arm rotating shaft, 6; canopy coupling shaft, 7; weight, 8; weight mounting shaft , 9; canopy opening / closing cylinder, 10; tilt limit stopper, 11; rising pipe, 12; rising pipe body, 13; rising pipe inner wall refractory, 14; canopy water seal seat, 15; water seal seat groove, 16; arm Bearing, 17; Edged damper, 18; Edged damper open / close arm,
19; Cylinder for opening and closing the edge cut damper, 20; Dry main, 2
1; coke oven, m; water sealing water, L ₁ , L ₂ ; trajectory.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Yoshishige Higashi, 2-11, Kandasuda-cho, Kandasuda-cho, Chiyoda-ku, Tokyo (56) Reference: JP-A-52-129703 (JP, A)

Claims (2)

[Scope of utility model registration request] 1. A canopy opening / closing arm (4) which is rotatably supported by an immovable portion such as an ascending pipe (11) and whose tip is displaced up and down by rotation, and a tip of the canopy opening / closing arm (4). A canopy (1) which is axially coupled to the canopy opening / closing arm (4) in the same direction as the canopy opening / closing arm so as to be hung from the center of gravity, and a sealing ring plate (2) is hung vertically around the lower surface; A weight (7) for exerting a load on the upper surface of the canopy opening / closing arm (4) on the side of the pivotal support portion to the immovable portion of the center of gravity of the canopy (1) so as to incline (1) from the horizontal position. A canopy device in a coke oven riser consisting of. 2. The canopy device for a coke oven rising pipe according to claim 1, wherein the weight (7) is axially coupled to the canopy opening / closing arm (4) so as to be pivotally displaceable in the same direction.