DE19509170A1 - Tapping device - Google Patents

Description

The invention relates to a tapping device for insertion into an opening a metallurgical vessel, several of which are made of refractory ceramic Material existing rings forming a tapping tube are held together.

Such devices are used for repair when the tapping tube of a metallurgical vessel is worn out. It will then be after the Drill out the worn tapping tube on by means of a Retaining structure held together rings existing new The tapping tube is used as a tapping set in the bore.

According to the prior art, the rings are on one with a base plate connected metallic support tube pushed and insoluble on this held. The consisting of base plate, support tube and retaining ring Steel structure remains in the vessel and is lost. Such a thing Tapping set is complex.

The object of the invention is to simplify the support structure of the rings.

According to the invention, the above object is achieved in that the superimposed rings by means of at least one strap loop are held together, with the strap loop on the inside and outside runs the rings and is deflected at the top and bottom ring.  

With the tension band loop or the tension band loops, the rings placed on top of each other according to the respective needs hold together, forming the desired tapping tube. These Pre-assembly can be done at the ring manufacturer. Of the Consumers do not have to purchase and assemble the rings individually.

If the steel structure mentioned at the outset becomes centered at the consumer Inserting the tapping tube used, then this can be centered after Insert can be pulled out again and is therefore reusable. The Tension straps remain in the hole in the metallurgical vessel used tapping tube. They do not have to be dismantled. In the course of They can disappear from the foundry.

Advantageous refinements of the invention result from the subclaims and the following description.

The drawing shows:

Fig. 1 a composed of held together by means of clamping bands rings tapping pipe,

Fig. 2 shows the tapping pipe according to Fig. 1 with a centering device,

Fig. 3 is a development of the tapping tube in a self-centering version.

A tapping tube ( 1 ) is composed of several rings ( 2 and 8 ). So that the rings cannot be displaced transversely to the longitudinal axis (A), they are provided on the end face with tongue and groove connections ( 9 ) or other interlocking shapes.

The rings ( 2 and 8 ) are held together by means of strap loops ( 10 , 11 ). Each tensioning strap loop ( 10 , 11 ) extends on the inner wall and the outer wall of the rings ( 2 to 8 ). In the bottom ring ( 2 ) and the top ring ( 8 ), each strap loop ( 10 , 11 ) is deflected accordingly. The strap is made of plastic or metal. The ends of the respective strap are, for example, in the area ( 12 or 13 ). There the ends are connected to form the respective strap loop. This can be done by welding or by a clamping element.

In the figures, two strap loops ( 10 , 11 ) are shown, which are offset by approximately 180 ° on the circumference of the tapping tube ( 1 ). However, three or more strap loops can also be provided. A tension band is also to be understood here as a wire.

If the tapping tube ( 1 ) of a masonry (M) of a converter is worn out, it is drilled out. Then the tapping tube ( 1 ) consisting of the rings ( 2 to 8 ) and held together by the strap loops ( 10 , 11 ) is inserted into the bore (B). The remaining gap is filled with potting compound (V). The lowermost ring ( 2 ) has a conical extension ( 14 ) on the outside, which closes off the bore (B) at the bottom, so that pourable casting compound (V) is not yet released.

In order to facilitate the centering insertion of the tapping tube ( 1 ) into the bore (B), a support tube ( 15 ) is provided according to FIG. 2, which is attached to a base plate ( 16 ). To insert the tapping tube ( 1 ) into the bore (B), the tapping tube ( 1 ) with the strap loops ( 10, 11 ) is pushed onto the support tube ( 15 ) and inserted into the bore (B) by means of the latter. When the base plate ( 16 ) lies flat on the outer wall (W) of the masonry (M), the tapping tube ( 1 ) is centered in the bore (B). After the pouring compound (V) has been filled in and solidified, the carrier tube ( 15 ) with the base plate ( 16 ) can be pulled out of the tapping tube ( 1 ). The carrier tube ( 15 ) and the base plate ( 16 ) can thus be reused for the next work processes. In the course of the casting operation, the tensioning band loop ( 10 , 11 ) disappears at least as far as it lies inside the tapping tube ( 1 ).

In the embodiment of Fig. 3, the tapping pipe (1) is self-centering in the bore (B). For this purpose, apart from the conical widening ( 14 ) of the lower ring ( 2 ), which continues cylindrically, centering webs ( 17 ) are formed on an upper ring ( 6 ). When the tapping tube ( 1 ) is inserted into the bore (B), the tapping tube ( 1 ) is centered by means of the rings ( 2 , 6 ).

The rings ( 2 to 8 ) can be assembled depending on the desired geometry of the tapping tube ( 1 ). For example, it is also possible to use rings which form a stepped inner diameter of the tapping tube ( 1 ).

Claims (8)

1. tapping device for insertion into an opening of a metallurgical vessel, wherein a plurality of rings made of refractory ceramic material are held together forming a tapping tube, characterized in that the superimposed rings ( 2 to 8 ) held together by at least one tension band loop ( 10 , 11 ) are, the tension band loop ( 10 , 11 ) inside and outside of the rings ( 2 to 8 ) and is deflected at the top and bottom ring ( 2 , 8 ). 2. tapping device according to claim 1, characterized, that three strap loops are provided distributed around the tube circumference. 3. tapping device according to claim 1 or 2, characterized in that the ends of the tensioning strap to form the tensioning strap loop ( 10 , 11 ) are connected to one another by welding or by a tensioning element. 4. tapping device according to one of the preceding claims, characterized in that the tensioning strap loop ( 10 , 11 ) consists of metal or plastic. 5. tapping device according to one of the preceding claims, characterized in that between the rings ( 2 to 8 ) end faces formations ( 9 ) are provided which prevent slipping of the rings ( 2 to 8 ) against each other. 6. tapping device according to one of the preceding claims, characterized in that in the tapping tube ( 1 ) a metallurgical support tube ( 15 ) is inserted so that it can be pulled out, the support tube ( 15 ) being connected to a base plate ( 16 ). 7. tapping device according to one of the preceding claims, characterized in that at least one of the rings ( 2 to 8 ) has outside centering webs ( 17 ). 8. tapping device according to one of the preceding claims, characterized in that the lowermost ring ( 2 ) has an extension ( 14 ) on the outside, the outer diameter of which is adapted to a bore (B) of the masonry (M) of the metallurgical vessel.