阅读说明：本技术 用于冷却待冷却的物件的冷却装置 (Cooling device for cooling an object to be cooled ) 是由 F·格罗塞·罗德曼 于 2019-02-26 设计创作，主要内容包括：本发明涉及一种用于冷却待冷却的物件(2)的冷却装置(1),包括用于冷却介质(M)的进口(3),该进口将冷却介质导引到冷却装置(1)的第一上腔室(4)中,其中,存在第一导引器件(5),其将冷却介质(M)从冷却装置(1)的上腔室(4)导引到第二下腔室(6)中,其中,上腔室(4)与下腔室(6)通过壁部(7)分开,其中,存在第二导引器件(8),其将冷却介质(M)从下腔室(6)导引至用于冷却介质(M)的至少一个出口(9),冷却介质(M)通过该出口施加到待冷却的物件(2)上。为了实现冷却介质的排出的快速停止以及可高效冷却冷却装置,本发明提出,第一导引器件(5)以其上端部与壁部(7)邻接或向上穿过该壁部,并且伸入到下腔室(6)中,并且以敞开端部(10)通到下腔室中,第二导引器件(8)从下腔室(6)的底部区域向上伸入到下腔室(6)中,并且以敞开端部(11)通到下腔室中,其中,第一导引器件(5)的下端部(10)在第二导引器件(8)的上端部(11)下方。(The invention relates to a cooling device (1) for cooling an object (2) to be cooled, comprising an inlet (3) for a cooling medium (M), which leads the cooling medium into a first upper chamber (4) of the cooling device (1), wherein first guiding means (5) are present, which lead the cooling medium (M) from the upper chamber (4) into a second lower chamber (6) of the cooling device (1), wherein the upper chamber (4) is separated from the lower chamber (6) by a wall (7), wherein second guiding means (8) are present, which lead the cooling medium (M) from the lower chamber (6) to at least one outlet (9) for the cooling medium (M), through which the cooling medium (M) is applied to the object (2) to be cooled. In order to achieve a rapid stop of the discharge of the cooling medium and an efficient cooling of the cooling device, the invention proposes that the first guide means (5) adjoin the wall (7) with its upper end or pass through it upwards and project into the lower chamber (6) and open into the lower chamber with an open end (10), and that the second guide means (8) project upwards from the bottom region of the lower chamber (6) into the lower chamber (6) and open into the lower chamber with an open end (11), wherein the lower end (10) of the first guide means (5) is below the upper end (11) of the second guide means (8).)

1. A cooling device (1) for cooling an object (2) to be cooled, comprising an inlet (3) for a cooling medium (M) which leads the cooling medium into a first upper chamber (4) of the cooling device (1), wherein first guiding means (5) are present which lead the cooling medium (M) from the upper chamber (4) into a second lower chamber (6) of the cooling device (1), wherein the upper chamber (4) is separated from the lower chamber (6) by a wall (7), wherein second guiding means (8) are present which lead the cooling medium (M) from the lower chamber (6) to at least one outlet (9) for the cooling medium (M) via which the cooling medium (M) is applied to the object (2) to be cooled,

characterized in that the first guide means (5) adjoins or passes through the wall (7) with its upper end upward and projects into the lower chamber (6) and opens with an open end (10) into the lower chamber,

the second guide means (8) projects from the bottom region of the lower chamber (6) upwards into the lower chamber (6) and opens out with an open end (11) into the lower chamber,

wherein the lower end (10) of the first guide means (5) is located below the upper end (11) of the second guide means (8).

2. A cooling arrangement according to claim 1, characterised in that the vertical extension (h) from the lower end (10) of the first guide means (5) up to the upper end (11) of the second guide means (8) is between 0.01m and 1.00m, preferably between 0.1m and 0.5 m.

3. A cooling arrangement according to claim 1 or 2, characterised in that the first guiding means (5) is formed by at least one tube, preferably at least one tube of any cross-section, which is fixed at or in the wall (7), preferably at or in the underside of the wall (7), and which is in fluid connection with the upper chamber (4).

4. A cooling arrangement according to any one of claims 1-3, characterised in that the second guide means (8) are formed by at least one tube, in particular of arbitrary cross-section, which is fixed at the bottom region of the lower chamber (6).

5. A cooling arrangement according to claim 4, characterised in that the second guiding means (8) is formed by a number of tubes, wherein nozzles for the cooling medium (M) are arranged at the ends of the tubes.

6. A cooling arrangement according to claim 5, characterised in that the nozzles for the cooling medium (M) are arranged evenly distributed at the lower side of the lower chamber (6) or at a component connected to this lower side.

7. A cooling arrangement according to any one of claims 1-6, characterised in that an outflow (12) for the cooling medium (M) is arranged in the lower chamber (6), wherein a controllable shut-off mechanism (13) is preferably arranged in the outflow (12).

8. A cooling arrangement according to claim 7, characterised in that the outflow (12) is arranged at a level of the lower chamber (6) below the upper end (11) of the second guiding means (8).

9. A cooling arrangement according to any one of claims 1-8, characterised in that at least one evacuation mechanism is arranged at the lower chamber (6) in order to be able to evacuate the cooling medium (M) from the chamber (6).

10. The cooling arrangement according to any one of claims 1-9, characterised in that at least one ventilation means is arranged at the inlet (3) and/or at the upper chamber (4) and/or at the lower chamber (6).

Technical Field

The invention relates to a cooling device for cooling an object to be cooled, comprising an inlet for a cooling medium, which inlet guides the cooling medium into a first upper chamber of the cooling device, wherein first guide means are present, which guide means guide the cooling medium from the upper chamber of the cooling device into a second lower chamber, wherein the upper chamber is separated from the lower chamber by a wall, wherein second guide means are present, which guide the cooling medium from the lower chamber to at least one outlet for the cooling medium, through which outlet the cooling medium is applied to the object to be cooled.

Background

Such a cooling device is illustrated in CN 103316934A. Here, the cooling water is conducted from the upper chamber into the lower chamber via a pipe which is arranged at the mentioned wall and extends from this wall upwards to a certain height into the upper chamber. Since a certain water level in the upper chamber, at which the cooling water flows into the lower chamber, a discharge pipe for the cooling water is arranged at the bottom of the lower chamber, through which the cooling water is discharged once the corresponding water level is reached in the lower chamber. CN101838724A shows another similar solution.

GB2529072B discloses another solution. Here, the cooling chamber is likewise divided into two parts. The wall (separating plate) between the two subchambers has perforations through which cooling water flows. When the cooling beam is switched off, the entire volume must then be evacuated from the cooling beam and partially from the line. This requires a lot of time. In order to accelerate the evacuation, an evacuation valve must be used here. However, the evacuation valve must be handled by an automated system, which is error-prone and expensive. In this solution, no valves of any size can be used, taking into account the available installation space for the emptying device. It has been shown that in this solution the emptying time is sometimes significantly greater than 1 minute. If the chilled beam is self-cooling, it must be done by separately laying the piping. Otherwise it is not possible to ensure that no cooling water drips from the nozzle onto the rolled article.

In the known solutions, cooling devices for the rolled articles are involved, which are arranged above and below the rolled articles in order to load the rolled articles with a cooling medium and thus to cool the rolled articles. Here, water is generally used as the cooling medium.

In cooling devices for thick steel plates, for example, the rolled stock is cooled in a passage, wherein the rolled stock is transported through a cooling section by means of rollers. When the end of the rolled piece (plate) leaves the cooling section, the cooling beam is turned off. After the water supply to the chilled beam is finished, a relatively long wake or drip of the chilled beam occurs, especially in the upper chilled beam with the nozzle assembly.

If the production of sheets is now to be carried out in rapid succession, wherein not every sheet is to be cooled, the time for emptying the cooling beam plays a decisive role. The next sheet that is not to be cooled can only pass the cooling mechanism when water is no longer dripping from the upper cooling beam. Rapid evacuation of the upper chilled beam is therefore required. In known embodiments of chilled beams, the duration of evacuation may be between 1 and 3 minutes. This is because all the water above the nozzle opening must be drained from the chilled beam.

In the known solutions, therefore, the cooling medium flows into the interior space of the chilled beam through the coupling in the built-in distribution pipe. In this case, the outlet opening of the distributor is always below the minimum coolant level. When the chilled beam is switched off, the water level must first be lowered to a minimum level. In such systems, it is often difficult to arrange the cooling nozzles uniformly above the chilled beams, which disadvantageously results in partially uniform cooling.

In previously known solutions, the required self-cooling of the cooling device has not been solved satisfactorily to date without the use of a cooling device, but with the passage of hot articles underneath the cooling device.

Disclosure of Invention

The object of the invention is to improve a cooling device of the type mentioned at the outset in such a way that long dripping after the end of the cooling process can be avoided. Therefore, a quick stop of the discharge of the cooling medium should be achieved, i.e. a chilled beam should be provided which enables a quick evacuation. It should also be ensured here that cooling can be achieved as uniformly as possible and that locally concentrated water loading is avoided. However, the use of expensive or sensitive elements (valves, etc.) should be avoided for this purpose. Another important aspect is that the cooling of the cooling device itself during a cooling interruption should be efficiently achieved.

The solution of the invention for this object is characterized in that the first guide means adjoins the wall portion with its upper end or passes through it upwards and projects into the lower chamber and opens with an open end into the lower chamber, and the second guide means projects from the bottom region of the lower chamber upwards into the lower chamber and opens with an open end into the lower chamber, wherein the lower end of the first guide means is below the upper end of the second guide means.

The second guide means preferably pass through the bottom region of the lower chamber in order to apply the cooling medium to the items to be cooled.

The vertical extent of the lower end of the first guide means up to the upper end of the second guide means is preferably between 0.01m and 1.00m, particularly preferably between 0.1m and 0.5 m.

The first guide means are preferably formed by at least one tube which is fixed at or in the wall, preferably on the underside of the wall, and which is in fluid connection with the upper chamber.

The second guide means are preferably formed by at least one tube, in particular of arbitrary cross section, which is fixed at the bottom region of the lower chamber. In this case, it is preferably provided that the second guide means are formed by a plurality of tubes, wherein nozzles for the cooling medium are arranged at the ends of the tubes. The nozzles for the cooling medium are preferably distributed uniformly on the underside of the lower chamber or on a component connected thereto.

In the lower chamber, an outflow for the cooling medium is preferably arranged, wherein in the outflow a controllable shut-off mechanism (in particular a valve means) is preferably arranged. The outflow is preferably arranged here at a height of the lower chamber below the upper end of the second guide means.

At least one evacuation mechanism (in particular an evacuation valve) can be arranged at the lower chamber, so that the cooling medium can be evacuated from the chamber.

At least one ventilation mechanism (in particular a ventilation valve) can be arranged at the inlet and/or at the upper chamber and/or at the lower chamber.

In the proposed solution, it is advantageously achieved that the cooling medium leaves the cooling device very quickly and thus dripping over a long time after the cooling process has ended can be avoided efficiently.

Furthermore, it is highly advantageous that an efficient self-cooling of the cooling device can still be maintained during the cooling pause.

Finally, a very uniform and homogeneous water distribution in the width direction (i.e. transversely to the conveying direction of the articles to be cooled) can be simply brought about.

The proposed cooling device is suitable for thick steel plate rolling mills, hot strip production lines and heat treatment production lines, in particular for steel. However, the same applies to non-ferrous metals.

A cooling model computer may be provided that enables intelligent adjustment of the cooling mechanism. The cooling model computer will shut down the cooling device based on the actual idle time. Here, the computer independently determines the theoretical time required from the existing process data, or uses other predetermined parameters of the process model computer.

In order to further shorten the emptying time, an emptying mechanism is advantageously provided. To better ventilate the chilled beam during start-up, a ventilation mechanism may be provided at the chamber or the piping. The ventilation mechanism may also improve the emptying performance if it is opened when the main conveyor is closed. Thus allowing air to flow into the chilled beam quickly.

The proposed design thus allows for a rapid emptying of the cooling device after the cooling process. The freewheeling behavior is improved by means of measures which can be implemented simply. The number of moving parts (which are prone to malfunction, such as valves, etc.) can be reduced in this case. A uniform and homogeneous water distribution in a direction transverse to the conveying direction of the articles to be cooled is ensured.

The rolled material can be loaded with the cooling medium uniformly and over a large area. The space requirement for the described cooling device is minimized. Furthermore, efficient self-cooling for protecting the chilled beam can be achieved.

Drawings

Embodiments of the invention are shown in the drawings. The sole figure shows a side view of a cooling device by means of which the object to be cooled is cooled.

Detailed Description

In the drawing, a cooling device 1 is shown, by means of which an object 2 to be cooled, for example a strip, is cooled by means of a cooling medium M (water). The cooling medium M enters the first chamber 4 in the upper part in the vertical direction V through the inlet 3. Below the upper chamber 4, a lower, second chamber 6 is arranged, wherein the two chambers 4, 6 are separated from each other by a wall 7.

On the underside of the wall 7 a plurality of (in this embodiment two) straight pipes (first guide means) 5 of arbitrary cross section are arranged, wherein the pipes are mechanically fixed at or in the wall 7, however in fluid connection with the upper chamber 4. Thus, water can flow from the upper chamber 4 to the lower chamber 6 through the tube 5.

For applying water from the lower chamber 6 to the article 2, a plurality of straight pipes (second guide means) 8 of arbitrary cross section are provided, which extend upwards from the bottom region of the lower chamber 6; at the lower end of the tube there is an outlet 9 which acts as a nozzle through which water is applied to the articles 2. In the figure, the dashed lines for the middle nozzle, more precisely the outlet 9, illustrate how the water M reaches the object 2 to be cooled.

The first guide means 5 has an open end 10 and the second guide means 8 has an open end 11. It is important that the lower end 10 of the first guide means 5 is below the upper end 11 of the second guide means 8. The vertical extension obtained in this regard is denoted by h.

Thus, for the minimum water level W in the lower chamber 6_minThe value defined by the upper end 11 of the second guide means 8 is obtained. As soon as this water level is exceeded, water exits from the outlet 9; at or below this level, water no longer exits from the outlet 9.

At the water level W_minBelow, in the lower chamber 8, an outflow 12 is arranged, which can be opened and closed, for example, by a controllable closure mechanism 13.

Based on the proposed design of the cooling device 1, the concept therefore focuses on an upper chamber and a lower chamber, which are connected to each other by an internal pipe (first guide means 5) with an arbitrary cross section. The outflow opening of the pipe (first guide means) is always at the lowest water level W of the lower chamber 6_minBelow (the water surface). Thereby preventing evacuation of the upper chamber 4 and the associated piping (inlet). The number and cross section of the first guide means 5 are arbitrary here.

If the cooling is stopped and the water feed through the inlet 3 to the cooling device 1 is thus shut off, only the volume from the wall 7 of the lower chamber 6 up to the open end 11 of the second guide means 8 has to be emptied.

It has been shown that the emptying time can be reduced to below 1 minute by this measure. Nevertheless, the exit nozzles for the cooling medium can be distributed uniformly and uniformly over the provided cooling surface of the cooling device.

By the above-described construction of the cooling device 1, a small amount of cooling medium can be supplied to the chilled beam through the inlet 3 after emptying and opening the shut-off mechanism 13. This number then gives rise to cooling of the cooling device from the inside when the object (sheet) has to pass through the cooling device 1, but does not need to be cooled by the cooling device. The cooling medium for self-cooling can flow out through the outflow 12 of the outflow in the cooling device, without flowing from the nozzle onto the object and cooling the object. For this purpose, the outflow 12 is arranged below the upper end 11 of the second guide means.

List of reference numerals

1 Cooling device

2 article to be cooled

3 inlet of the device

4 first upper chamber

5 first guide means

6 second lower chamber

7 wall part

8 second guiding means

9 outlet

10 open end of the first guide means

11 open end of the second guide means

12 outflow part

13 cutting mechanism

M Cooling Medium

V vertical direction

h extension

W_minLowest water level