JPS5834286A - Stationary connector - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to the field of stationary connections capable of connecting an inlet line network from a fixed pressure fluid source to a use line network provided on a rotatable support.

A typical but non-limiting example of the application of the present invention is a swinging metal ladle such as a steel converter, where the introduction of the refining fluid (gas or liquid) is through a journal. , connected to the blowing member at the bottom of the furnace.

In fact, attempts have been made to manipulate the blowing conditions of individual blowing agents via blowing elements without changing the dynamic properties of other blowing agents.

It is therefore necessary to devise a part of the jarnano with a plurality of passages that ensure the connection between the use-side pipe fixed to the converter wall and the same number of inlet pipes connected to the fixed supply source. Become.

However, this technique is difficult. In fact, if one attempts to insert the maximum number of conduits into a hollow journal of a given internal diameter, one encounters the problem that the dimensions of the connecting member are so large that the maximum number of conduits cannot be accommodated.

Previous solutions to this problem have not been satisfactory.

On the one hand, a plurality of rotary joints (
For example, the one described in French Patent No. 3,477,766) is also undesirable because of its large size and the problem of airtightness.

On the other hand, the device described in French patent application no. It does not solve the problem of individually manipulating fluxes.

Moreover, French Patent No. 2.2 sa, o93 describes a joint with multiple passages to the converter, which to a certain extent solves the above-mentioned problems. In this type of static connection, the use-side conduit, which is integral with the ladle, is connected to a fixed source by a flexible tube wound on a drum which is integral with the ladle. However, the problem of member dimensions in the journal portion has not been satisfactorily resolved. That is, the journal portion is replaced by a ring of large diameter that cooperates with the supporting rows to enable rocking of the ladle.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a gas-tight joint with a plurality of passages, the number of passages being not limited by the dimensions of the joint member.

Another object of the invention is to provide multiple passages in the journal portion without requiring significant changes to existing equipment.

In accordance with these objects, the present invention provides a stationary connection device for a plurality of passages, comprising a perforated block of generally elongated shape, the blocks being arranged in a ring on the one hand, with identical ends of the blocks Connecting said single-eyed conduit to the side surface of said block to which a plurality of longitudinal one-eyed internal conduits opening onto a surface and, on the other hand, a plurality of orifices mutually offset in the longitudinal direction and in a direction orthogonal to the longitudinal direction connect. and a lateral internal conduit.

According to one aspect of the invention, the longitudinal conduits are of varying depth and the transverse conduits connect near the bottom of the conduits.

According to a preferred embodiment of the invention, the longitudinal single-eyed conduits are each divided into two identical and symmetrical semicircular groups, each group having a predetermined conduit depth closest to that of the same group. The pipe is configured to be longer than one of the two pipes and shorter than the other.

The invention further provides a metal ladle with a blowing member at the bottom, at least one of which swings around a tubular support journal, and a perforated block provided in an axial extension of the journal. a block with a longitudinal pipe opening on its front surface, a supply side pipe connecting the transverse pipe of the block to a fixed supply source, and a blowing member at the bottom of the furnace connected to the ladle. A stationary connection device is provided that includes a use-side conduit passing through the journal and connecting with a longitudinal conduit.

According to a preferred embodiment of the invention, the blocks are surrounded by a drum at a certain distance, the drum being covered with a feed line and provided with longitudinal openings for the passage of the line. It is characterized by

Other features and advantages of the present invention will become apparent from the following examples with reference to the accompanying drawings.

Identical parts are designated with the same reference numerals in the figures.

The perforated block (1), which has an elongated shape, has a shaft (3) inside.
) arranged in a ring around a longitudinal one-eyed duct (
2) and a second group of transverse pipes (4) that connect to the one-eyed pipe (2) near its bottom. The one-eyed conduit (2) opens on the front surface (5) of the perforated block (1), and the other transverse conduit (4) opens on the perforated block (1).
1) is open on the side wall.

As shown, the perforated block (1) is approximately rectangular in shape, with only two sides (6, 6') being perforated.

In the illustrated embodiment, identical and therefore interchangeable inlet tubes (7) are connected to each other.

According to the invention, the single-eyed conduit (2) is divided into two groups symmetrical to each other at the vertical median line ^-A (Fig. 3), each group forming a semicircle (in the illustrated example) with the single-eyed conduit (2). The depths of the vessels are different, and a given one-way pipe (2) is deeper than one of the two nearest one-way pipes (2) in the same group. One is shallow and one is configured to be deeper than the other. Therefore, as shown in the figure, the depths of the single-eye pipe (2) at the upper and lower ends of the semicircle are the shortest and longest, and the depth of the single-eye pipe (2) between the two ends increases.

Since the transverse pipe (4) communicates with the longitudinal pipe (2) near its bottom, the outlet holes of the transverse pipe (4) are offset from each other in the longitudinal and vertical directions. It is located on the side (6,6゛).

This feature is an essential feature of the invention. However, the present invention is not limited to rectangular parallelepiped blocks (11).

As is clear from the above, the present invention minimizes the dimensions of the joint flange (8) of the supply tube bundle (9).

That is, more precisely, the number of single-eyed pipes (2) is no longer limited by the dimensions of the joint member.

With such an arrangement, the only limitation is the minimum thickness of material between adjacent eye channels (2).

Furthermore, when it is desired to minimize the volume of the perforated block (1), the spacing between two adjacent orifices on the sides (6,6") can be adjusted as shown in FIG.
It is recommended that the width be approximately equal to the width of 8).

In this way, the depth of each longitudinal conduit (2) is determined and thus the upper part of the perforated block (1) can be omitted, reducing dimensions and weight.

Although a perforated block (1) with longitudinal channels of varying depth has the advantages mentioned above, the invention is not limited thereto in any way. It is also within the scope of the invention to have a conduit (2) of uniform depth, with a longitudinal conduit (2) in which the perforated blocks are arranged in an annular manner, and a conduit (2) in which the perforated blocks are simultaneously offset in the longitudinal and vertical directions. It is within the scope of the present invention as long as the transverse pipe (4) is provided with a transverse pipe (4) that opens on the side according to the arrangement.

Now, the entire apparatus for providing a plurality of passages in the hollow journal portion Ql of a metal ladle using the perforated block of the present invention will be described. As shown in Figure 4, the perforated block (11) has an axial hole (11) on its front surface (5) through which the fixing screw (12) passes, allowing access to the head of the screw (12). It is set up by Churai Kusho (13).

Further, as will be described later, holes (14) and (15) are provided to facilitate assembly with the journal portion (to). Furthermore, for the same reason, in more detail, the usage side pipe (here, (1)
An intermediate sleeve (17) is used between the journal part and the perforated block in order to allow access to the interior of the journal part αΦ for attachment (indicated by 6)). Another role of the intermediate sleeve (17) is to extend the length of the journal (
The purpose is to bend the conduit to facilitate passage of the conduit through the journal portion in a compact form as shown in FIG. In fact, on the one hand, the conduit (2
) are distributed in an annular manner and, on the other hand, it is necessary to leave a constant material thickness between the conduits (2), so that the conduits (16) of the extensions of these conduits are connected to each other before entering the journal part. separated and then compressed together to minimize their bulk.

Therefore, in the case shown in FIG. 7, the best compactness of the conduits (16) is achieved for a journal part of a given diameter, in this example the number of conduits being ten.

As shown in FIGS. 2 and 4, the intermediate sleeve (17)
is closed at its end with a perforated plate (18).

The perforated plate (18) is drilled with holes (19) in an arrangement that closely corresponds to the arrangement of the single-eyed conduit (2) of the perforated block (1). Furthermore, it is axially threaded (not shown) to receive the screws (12) of the perforated block (1).

The end of the use-side conduit (16) is received inside the perforated plate (18). An annular shoulder (20) in the bore (19)' facilitates joining of the tubes. Furthermore, two centering elements (21, 22) of different lengths enter from the outside of the perforated plate (18) and, as will be described later, respectively form the perforated block (11 holes (14), (15)). Work together to facilitate assembly.

Furthermore, a counterbore (23) is provided around the hole (19) on the outside of the perforated plate (18), while the hole (19) has a larger diameter than the single-eyed conduit (2) and is connected to the perforated block ( 1) front side (5
) and a sliding jacket (24) that can come into contact with the receiver.

First, the sliding jacket (24) is inserted with a length shorter than the length of the shorter centering element (22), but sufficient to support the gas-tight ring (25), for example of LC steel.

Next, assembly is performed as follows. First, the longer centering element (21) is engaged in the hole (14) to provide only the next degree of freedom of movement in the perforated block to facilitate assembly.

The perforated block (1) is then placed around the centering element (21).
) into the hole (15) while gently rotating the centering element (2).
Insert 2).

After completing the centering operation, the entire assembly is connected using the fixing screw (12). When tightening the screw (12), make sure that the jacket (
24), the airtight ring (25) is a perforated block (1)
It will naturally fall into place as you move forward.

If there is no sliding jacket (24), then the airtight ring (25)
) is difficult to accurately position.
The advantages of this sliding jacket (24) can be seen.

Furthermore, these sliding jackets (24) have counterbores (2
3) to form an annular throat that accommodates the airtight ring (25). In the assembly method described above, the sliding jacket (24
) is the length between the outer surface of the perforated plate (18) and the inner shoulder (2).
The length may be at most equal to the distance between 0) and 0).

As shown in FIGS. 5 and 6, the perforated block (11) is installed inside the guide drum (26),
) on which the supply-side conduits (9) are wound in parallel. The diameter of the drum (26) is determined by the characteristics of the conduit (9) to provide a curvature that meets manufacturing specifications. The length of the conduit (9) is such that it can form a loop (not shown) to allow rocking of the ladle about the axis (3).

Furthermore, as shown in FIG. 6, the drum (26) has openings (27) along the generatrix, allowing passage of the conduit (9) towards the perforated block (1). The front ends of the openings (27) are respectively directed towards the sides (6) or (6') of the perforated block (1) and are provided with curved tongues (28), (
29) is provided.

Still referring to FIG. 5, the drum (26) is secured to the forward flange (30) of the sleeve (17).

This may be replaced by other means. For example, instead of the sleeve, the drum (26) may be fixed directly to the perforated protrusion (1) by suitable means.

Journal part a facing the ladle wall (32)
The axial orientator (31) provided on the front surface of the rotation allows the journal part aω to exit in the radial direction while the conduit (1) on the use side
6) connects to a blowing element (not shown) provided at the bottom of the metal ladle.

The present invention is not limited to the above-mentioned embodiments,
Various embodiments are possible within the technical scope of the claims.

Furthermore, the scope of the present invention is not limited to bottom-blown converters for steelmaking, but can also be applied to, for example, top-blown oxygen converters. Currently, oxygen converters are of new generation (LD, LDAC, O
LP type), and a blowing element for stirring is provided at the bottom of the furnace. These new converters are often provided with tuyeres or ventilated blowing elements of refractory material of the same nature as the converter lining.

L, B, E, (Lance Brassage E
A modern blowing method known as the quilibre method involves blowing oxygen from above and simultaneously blowing an inert stirring gas such as nitrogen or argon for a period of time, or optionally an active gas such as oxygen.

However, it is clear that it would be desirable to have complete automation of the gas line so that the various gases could be controlled individually.

It is clear that the present invention has great utility under such circumstances.

[Brief explanation of drawings]

FIG. 1 is an axial sectional view taken along plane A-A of the perforated block shown in FIG. 3; FIG. 2 is a side view of a perforated block that is attached to the journal portion of the converter and provides an airtight connection between the use-side pipe line and the supply-side pipe line. FIG. 3 is a sectional view taken along plane B-H in FIG. 2. FIG. 4 is an enlarged axial view showing details of the perforated block attached to the journal portion. FIG. 5 shows the most complete embodiment of the invention, mounted on the furnace wall. FIG. 6 shows a sectional view along plane E-H of FIG. FIG. 7 is a sectional view taken along plane DD in FIG. 2, showing the conduit bundle. (Reference numbers) 1. Perforated block, 2. One-eyed pipe, 4. Horizontal pipe, 5. Front of perforated block, 6. Side, 7.
．． 9. Supply side conduit, 10. Journal department, Applicant: Institut de Recherche de la Siderrouzy, Française agent, Patent attorney, Shizune Arai-7

Claims (1)

Claims: (1) A stationary connection device for a plurality of numbered paths, comprising a perforated block (1) of generally elongated shape, the block being arranged in a ring on the one hand, A plurality of long horizontal one-eyed internal channels (
2) and, on the other hand, a lateral direction connecting said single-eyed conduit (2) to the sides (6, 6') of said block to which a plurality of orifices mutually offset in the longitudinal direction and in the direction orthogonal to the longitudinal direction connect. The stationary connection device as described above, characterized in that it comprises an internal conduit (3). (2) The one-eye pipe (2) in the longitudinal direction has various depths, and the one-eye pipe (3) in the horizontal direction is connected near the bottom of the one-eye pipe. A static connection device according to claim 1. (3) The longitudinal single-eyed conduit (2) is divided into two identical and symmetrical semicircular groups, each group consisting of:
The depth of a given conduit is the 2 closest to that of the same group.
3. The stationary connection device according to claim 2, wherein the stationary connection device is configured to be longer than one of the two conduits and shorter than the other. (4) furthermore, a hollow journal α of the rocking metal ladle extending axially by said block (11) and a supply conduit (7) connecting a fixed fluid source to the transverse conduit (3) of said block; , 9) and a fixed supply conduit (16) connecting the bottom of the swinging metal ladle with the longitudinal single-eye conduit (2). to third
Stationary connection devices as described in Section 1. (5) A sleeve (17) is provided between the journal Ol and the block (11), and the sleeve (17)
At the end on the side of the block (11), there is a closure having a passage α for extending the one-eye pipe (2) in the longitudinal direction of the block (1).
Claim 4 characterized in that it comprises a plate (18).
Stationary connection devices as described in Section 1. (6) An airtight joint (23) is provided in a counterbore (23) formed around the plurality of passages (19) on the surface of the closing plate (18) that comes into contact with the block (1). Passage (1
9) A jacket (24) can be made emotionally freely inside,
(24) A patent claim characterized in that the diameter is larger than the diameter of the longitudinal pipe (2) of the one eye, and cooperates with the counterbore (23) to form an annular housing part of the joint. Stationary connection device according to clause 5. (The 71M block (1) is surrounded by a drum at a certain distance, and the supply side pipe (9) is twisted around the drum, and a vertical opening (27) is provided for the passage of the pipe (9). A stationary connection device according to claim 4, characterized in that: (8) the use-side conduit (16) is connected to a converter (32) for fluid stirring of a metal bath; Claims 4 to 7, characterized in that the blowing element is connected to a blowing element housed in the bottom of the
Application of the static connection device according to any of paragraphs.