SU1661188A1 - Device for sealing doorways of coking oven chambers - Google Patents

Abstract

The invention relates to coke production, in particular to doors and frames of coke ovens, and can be used for seals operating under conditions of varying temperatures. The aim of the invention is to provide the possibility of cleaning the sealing elements during operation and thereby increasing the operational reliability of sealing the coking chambers. A distinctive feature of the device for sealing doorways is the manufacture of a flexible sealing element in the form of a flexible shaft, mounted for movement on a temperature-sensitive element made of a material having a thermomechanical shape memory, mounted between the horizontal inner shelf of the corner and the flexible shaft. The device for sealing the doorways of the coke ovens makes it possible to clean the sealing elements after each door installation and thereby increase the operational reliability of the sealing of the coking chambers. 2 hp ff, 3 ill.

Description

The invention relates to coke production, in particular, to doors and frames of coke ovens, and can be used for seals operating under conditions of varying temperatures.

The purpose of the invention is to provide the possibility of cleaning the sealing elements during the operation of coke ovens and thereby increasing the operational reliability of sealing the coking chambers.

Figure 1 shows a device for sealing door openings of coke ovens, a general view; figure 2 - section aa in figure 1;

Fig. 3 shows a seal assembly, a cross section along the axis of the adjusting screw, the placement of a thermosensitive element at the position of the coke oven door. Open.

The device for sealing the doorways of the coke oven chambers includes a door 1 with a sealing frame 2 installed along the entire perimeter of the door body and supported on a heat-resistant gasket. The adjustment of the degree of pressure of the knife of the sealing frame 2 to the mirror of the reinforcing frame 3 is carried out by adjusting screws 4, which are installed in the threaded holes of the door body 1.

00 WITH

A cupola frame, an angle 5 is attached with the formation of a space in which a sealing element 6 is placed with the possibility of moving the bending / s sealing element 6.

Between the horizontal inner shelf of the corner 5 and the flexible sealing element 6 there is mounted a spiral-shaped or Z-shaped thermo-sensitive element 7 made of a material that has the effect of a thermomechanical shape memory. The temperature-sensitive element 7 is rigidly attached on one side to the corner 5. The sealing frame contacts the floor of the furnace with the action of clamping screws 8. The flexible sealing element 6 is placed on the support 9 and is made of elastic material,

The device works as follows.

When installing the door 1 into the reinforcing frame 3, the bolts are turned to the horizontal position and zgsh. t for hooks (not shown) attached to this frame. Using screws on the pins, door 1 is pressed against the reinforcing frame 3 (door position is closed). To fit door 1, the screws are released and the beams are turned until they are rex; will go out of charge with hooks mi (the position of the door is open). Adjusting the sealing frame 2 to the reinforcing frame 3 with screws 4 is performed only during the initial installation of the door 1 or during its installation after repair. During operation, the door is pressed to the reinforcement frame only with the help of bolts,

In the Closed position, the door 1 of the coke oven is installed in a known manner in the doorway of the coking chamber. In this case, the sealing frame 2 and the flexible sealing element 6 made of elastic material come into contact with the reinforcing frame 3 of the furnace. frame 3 is carried out by adjusting screws 4 of the flexible sealing element b to the reinforcing frame 3 - clamping screws 0. When exposed to a high temperature (20 ° C to 210 ° C), the heat sensation is triggered from the side of the coke oven. A solid element 7 of the structure, made spiral-shaped or Z-shaped from a material, for example, titanium with nickel, and previously heat-treated in such a way that it has the effect of a reversible thermomechanical / i shape memory. The product of this shape varies with temperature. , wherein

memory alloys are capable of spontaneously taking one form upon cooling and the other upon heating. This property is called the reversible memory effect.

forms.

At a temperature of 200-210 ° C, the temperature-sensitive element 7 of the design, lengthening (by 5-10 mm), moves the flexible sealing element 6 in the direction

0 to the reinforcing frame 3, which ensures that the seal position is adjusted congruently to the profile of the reinforcing frame, while the flexible sealing element 6 moves between the sealing frame 2 and

5 angle 5. Door position Open.

When the door 1 is removed from the coke oven under the action of a lower temperature (80-100 ° C), the temperature-sensitive element 7 takes on its original shape and

0 allows the flexible sealing element 8 to be inserted into the space between the sealing frame 2 and the angle 5 by 5-10 mm. As a result, after each installation, it is possible to systematically thoroughly clean the doors and reinforcing frames from resin and graphite without damaging the sealing elements, which increases the gas density of the coking chambers. This, in his

0 turn, prevents the deposition of resin and graphite in the area of installation of sealing elements and ensures the operational reliability of sealing elements. Upon further temperature cycling, the thermomechanical effect is repeated again. The effect of reversible memory in alloys can be observed many times without any noticeable irreversible changes in the structure and properties of the metal.

Claims (3)

0 The advantages of using the proposed device are to reduce the loss of coke oven gas into the environment, to maintain a positive pressure (not less than 50 Pa) on the hearth of the coke oven and, accordingly, to eliminate the flow of combustion products from the heating system to the coking chamber. Claim 1. Device for sealing door 0 openings of coke oven chambers, including a sealing frame installed along the entire perimeter of the door body, a reinforcing frame, an adjusting screw installed in the threaded holes of the body 5 doors, a corner attached to a sealing frame with the formation of a space in which a flexible sealing element is placed, characterized in that, in order to enable cleaning of sealing elements during operation of coke ovens and thereby increasing the operational reliability of the sealing chambers coking, the device is provided with a temperature-sensitive element, provided with a support at one end and attached to the corner with the other end, the flexible sealing element is mounted on the support with the possibility displacement, and the temperature-sensitive element is made 0 from a material with a thermomechanical memory effect. 2. Pop.1 device, characterized by the fact that the temperature-sensitive element is made spiral-shaped or Z-shaped. 3. The device according to claims 1 and 2, characterized in that the flexible sealing element is made of any elastic material. at eight H N four / Coke oven numbers & 1 Aa FIG. Z Non jfjOKcjpbou neuv FIG 3