CN204237813U - Rule steel He Laousi equipment - Google Patents

Abstract

The utility model relates to a kind of Rule steel He Laousi equipment (1), there is steel teeming ladle (3) and be arranged in the vacuum vessel (2) above steel teeming ladle, and vacuum vessel is arranged as has relative vertical movement for steel teeming ladle, wherein removably fixing with the spray gun (7 that can enter and extract out steel teeming ladle in the outside of vacuum vessel, 8,9) spray gun storehouse (10).

Description

Luer Steel Helios Devices

technical field

The utility model relates to a Luer steel Heraos equipment, which is hereinafter referred to as RH equipment for short. This secondary metallurgical melting plant has a steel ladle open above and a vacuum vessel arranged above it. At the bottom of the vacuum vessel are installed two submerged tubes which are submerged in the molten steel present in the steel ladle during steel processing. In this way, one immersion pipe transports the steel into the inner space of the vacuum container, and the molten steel returns to the steel pouring ladle through another immersion pipe, wherein a continuous partial degassing is achieved. The pouring ladle and the vacuum container are moved horizontally relative to each other, the ladle being usually stationary, and the vacuum container being transferred to the steel ladle and lowered onto it by means of a lever device.

Background technique

Measures and measurements are carried out on the molten steel from the workbench with the aid of a long-distance lance. For this reason, test lances are usually provided, which can penetrate into the ladle, or rather into the molten steel located therein, in order to extract a steel sample. Because the spray guns are only used temporarily, in conventional RH systems a spray gun chamber is provided which is located on the workbench away from the vacuum vessel and can be approached by means of a rotating ring or a linear guide. However, there is generally only a small amount of free space on the work table, so that unobstructed and safe access to the vacuum container is not possible.

The workbench of the RH installation is usually arranged in a relatively wide level above the upper edge of the steel pouring ladle. Correspondingly, the gap between molten steel and the spray gun of the spray gun storehouse placed on the workbench is relatively large. The lance must therefore have a correspondingly large length so that it can be moved in the region of the molten steel. The annular gaps used after immersion of the vacuum vessel in molten steel are relatively narrow, so that it is often difficult to insert the lances, in particular long ones which are curved due to their length, into the annular gap. It is also problematic that the steeper, precisely the smaller the angle between the vertical and the longitudinal direction of the lance, has to be kept, the greater the difference in height between the molten steel and the table. With such a positioning, the upper region of the lance has to be deflected in the direction of the vacuum container, but there is usually no corresponding space for this, for example by means of a lever arrangement for the vacuum container.

Utility model content

Proceeding from this point, the object of the present invention is to provide a RH installation of the aforementioned type which improves the described disadvantages.

This object is achieved by claim 1 , characterized in that a lance chamber with a lance that can be inserted into and withdrawn from the steel pouring ladle is detachably fastened outside the vacuum vessel. Due to this design, a greater space is available on the workbench, which can be transported without regard to the movement of the gun magazine between the bearing position remote from the vacuum vessel and the working position close to the vacuum vessel used in the case of the device. In addition, the lance chamber can be arranged relatively far down on the vacuum container, so that the lance can be designed to a relatively short size, which allows easy access of the lance to the vacuum container and the steel pouring ladle even in the above-mentioned inclined orientation of the lance in the annular space between them.

In a preferred configuration, the spray gun magazine has a support frame for holding at least one spray gun, and the support frame is held in the vacuum container by means of an effective form fit vertically downward and radially away from the vacuum container through the upper frame region. on the bearing element. This fastening of the lance chamber allows simple, in particular reliable fastening to the vacuum vessel by means of a crane, by means of a suspension. The lance magazine is thus moved close to the vacuum container and is discharged vertically downwards in order to produce a so-called positive fit.

The above-described fastening of the spray gun magazine to the vacuum vessel is advantageous when the support frame, in particular its upper support region, is fastened on the vacuum vessel in such a way that it is pivotable about a horizontal axis. In this way, the lower support region is deflected in the direction of the vacuum vessel according to the resulting form fit and ultimately rests on it. Likewise, the securing of the supporting frame region of the support can be realized in the form of an effective form-fit or force-fit directed horizontally or radially away from the central longitudinal axis of the vacuum vessel, for example by means of a screw connection. In this way, a play-free fixation of the spray gun chamber is ensured approximately in the form of vibrations during movement of the vacuum container.

For the general case, that is, a test lance for taking a steel sample from a steel pouring ladle is present on the lance chamber, specifically the support frame, which is at least deflectably supported such that its lower end is close to vacuum in a first deflected position container, and away from the vacuum container in the second deflected position. After the steel sample has been taken from the molten steel present in the steel ladle, the test lance can be deflected away from the vacuum container, preferably by an electric motor, so that the sample can be taken from the lance from the table.

In addition to the test lance, the lance chamber includes, in another preferred embodiment, a temperature-measuring lance, the lower end of which carries the thermal sensor. In order to penetrate through the slag present on the molten steel, a penetrating lance can also be arranged on the lance chamber. The lance can also be held deflectably on the carrier, as is the case with the measuring lance.

The above characteristics, features and advantages of the present invention and how to realize them will be more obvious and easy to understand in conjunction with the following description of the embodiment, which is described in detail in conjunction with the accompanying drawings.

Description of drawings

For a further description of the invention, reference is made to the embodiment shown in Figure 1 of the accompanying drawings, which shows in schematic form a steel pouring ladle and a vacuum vessel arranged thereon.

FIG. 1 shows a melting vessel with a vacuum vessel arranged above it carrying a lance chamber with detachably secured lance chambers.

Detailed ways

Only the vacuum vessel 2 in the RH plant 1 and the steel casting ladle 3 arranged therebeneath are shown in the drawing. A work bench (not shown) is located, for example, on height level 4 indicated by a dashed line. In the lower part of the substantially cylindrical vacuum vessel 2 are arranged two submerged tubes 5 which are immersed in the molten steel 6 present in the steel ladle 3 during operation of the RH plant. A part of the molten steel 6 is sucked and degassed by creating a vacuum in the vacuum vessel. For process monitoring, from time to time steel samples are taken from the molten steel 6 located in the molten steel by means of the test lance 7 and the temperature of the molten steel 6 is determined by means of the measuring lance 8 . When a slag layer has formed on the surface of the molten steel 6 , it can be pierced by means of a penetrating lance in order to take a steel sample, for example by means of the test lance 7 .

The spray gun that can enter and withdraw from the steel pouring ladle 3 is arranged in the spray gun chamber 10 , and the spray gun chamber is detachably fixed on the vacuum container 2 on the outside. Thus, independently of the height position of the vacuum vessel 2 relative to the high and low levels 4 of the worktable, it is ensured that the gap between the lance chamber 10 and the lances held by it for the molten steel surface remains substantially constant. The spray gun magazine 10 comprises a support frame holding the spray guns 7 , 8 , 9 . The lances 7, 8, 9 comprise a quiver-shaped (Koecherfoermiges) housing 14, and for this purpose a lance rod 15 held movably in the longitudinal direction of the housing, which is indicated in the figure by the dotted line in the case of the measuring lance 8 express.

The carrier frame 13 is held by the upper frame region 11 on the bearing element L present on the outside of the vacuum container 2 with an effective form fit vertically downward and radially away from the vacuum container. The bearing frame 13 is preferably mounted pivotably about a horizontal axis 16 . In this way, the lower support region 17 is supported in the direction of pivoting movement 18 on the vacuum container 2 , specifically on its outer wall. The lower support area 17 can also be connected to the vacuum container 2 by bolts, for example by bolts (not shown), so that an effective form fit or force fit is obtained substantially in the horizontal direction and in the radial direction, wherein the radial direction is the central longitudinal axis of the vacuum vessel 2 .

The above-mentioned bearing element L is composed of two plate-shaped supports 19 spaced apart in the horizontal direction, the supports protrude from the outer wall of the vacuum wall 2, and each has a u-shaped groove 20 opening upwards, and a A round bar 23 forming the horizontal shaft 16 is part of the support frame. The round rod 23 projects laterally beyond the support 19 with its two ends and is connected to the support frame 13 by means of these ends.

The lance lever 15 is drawn out of or drawn out of the lower end of the quiver-shaped housing 14 by means of a drive consisting of an electric motor 24 and a transmission 25 which interacts with the lance lever 15 , for example in the form of a chain drive. Preferably, all spray guns of the spray gun magazine 10 are pivotably held on the support frame 13 with their upper ends. This deflection can also take place via a drive, for example by means of a fluid pressure cylinder 26 , ie a hydraulic cylinder or a pneumatic cylinder. Such a drive is used by way of example for a test lance 7 , which is shown schematically in the figure. The fluid pressure cylinder 26 is supported on the support frame 13 and on the upper end of the test lance 7 . The two support points are arranged in such a way that a pivoting movement of the fluid pressure cylinder 26 relative to the carrier frame 13 and the test lance 7 is possible. The deflectable supports are not shown in the figures for simplicity. In order to ensure the support point on the support frame 13, for example, a pipe connection 27 can be attached to the round bar 23, which forms the support point. Proceeding from the situation shown in the figure, the lower end of the test lance 7 is deflected in the direction of the arrow 28 when the fluid cylinder 26 is shortened, that is to say when its piston rod 29 is retracted.

Although the utility model is illustrated and described in detail by preferred embodiments, the utility model is not limited to the disclosed examples, and other variants can be deduced therefrom by professionals without departing from the scope of protection of the utility model .

Claims (10)

1. A Luer steel Heraos device (1) having a steel pouring ladle (3) and a vacuum vessel (2) arranged above said steel ladle, and said vacuum vessel being arranged relative to said A steel ladle with relative vertical mobility, wherein a lance chamber (10) with lances (7, 8, 9) capable of entering and withdrawing said steel ladle is detachably fixed outside said vacuum vessel. the 2. Luer steel Heraos device (1) according to claim 1, Wherein the spray gun chamber has a support frame (13) for holding at least one of the spray guns (7, 8, 9), and the support frame passes through the upper support area (11), using vertically downward and radially away from the An effective form fit in the direction in which the vacuum vessel points is maintained at the bearing element (L) present at said vacuum vessel (2). the 3. Luer steel Heraos device (1) according to claim 2, Wherein the supporting frame (13) is held deflectably around the horizontal axis (16) at the vacuum container (2), so that the lower frame region (17) is supported on the vacuum container (2) in the direction of deflection movement (18) )superior. the 4. Luer steel Heraos device (1) according to claim 3, The lower carrier region ( 17 ) is held on the vacuum vessel ( 2 ) with an effective positive or force fit in the radial direction. the 5. Luer steel Heraos device (1) according to any one of claims 2 to 4, wherein at least one of the spray guns (7, 8, 9) is deflectably supported at the support frame (13) such that the lower end of at least one of the spray guns approaches the vacuum vessel (2) in a first deflected position, and In the second deflected position away from the vacuum container (2). the 6. Luer steel Heraos device (1) according to claim 5, At least one of the lances (7, 8, 9) is motor-driven deflectable. the 7. Luer steel Heraos device (1) according to any one of claims 2 to 4, Wherein the measuring spray gun (8) for measuring the temperature of molten steel is arranged at the supporting frame (13). the 8. Luer steel Heraos device (1) according to claim 6, Wherein the measuring spray gun (8) for measuring the temperature of molten steel is arranged at the supporting frame (13). the 9. Luer steel Heraos device (1) according to any one of claims 2 to 4, Wherein a penetrating lance (9) for penetrating slag is arranged at the supporting frame. the 10. Luer steel Heraos device (1) according to claim 8, Wherein a penetrating lance (9) for penetrating slag is arranged at the supporting frame. the