Rapid cooling device for waste removing roller way of roller hearth type heating furnace

Abstract

The utility model discloses a rapid cooling device for a waste rejecting roller way of a roller hearth type heating furnace, which comprises an upper surface cooling mechanism, a lower surface cooling mechanism, an upper surface cooling mechanism and a lower surface cooling mechanism, wherein the upper surface cooling mechanism is arranged at the upper part of a waste rejecting plate blank on the waste rejecting roller way; the lower surface cooling mechanism is arranged at the lower part of the waste removing plate blank on the waste removing roller way; the upper surface cooling mechanism and the lower surface cooling mechanism are both connected with a cooling water supply system.

Description

Technical Field

[0001] The utility model relates to the technical field of metallurgical equipment, in particular to a rapid cooling device for a waste rejection roller table of a roller bottom heating furnace. Background Art

[0002] The CSP hot rolling roller-bottom heating furnace has a set of scrap rejection roller system, whose main purpose is to realize the scrap rejection and reloading of slabs by connecting the heating furnace shuttle car with the scrap rejection roller system. In the event of a failure in the CSP production line, the slabs can be continuously rejected through the heating furnace to increase the buffer time and gain buffer time for fault handling. In the actual fault handling process, due to the limited length of the scrap rejection roller, the hot slabs need to be quickly lifted off the scrap rejection roller after rejection, but the high-temperature slabs are severely thermally deformed. After being lifted off the scrap rejection roller, the slabs are severely deformed and cannot be reloaded for rolling, resulting in waste of slabs. Therefore, if a rapid cooling device can be added to the scrap rejection roller, the high-temperature slabs can be quickly and evenly cooled, and thermal deformation can be reduced, so that the scrapped slabs can still be reloaded after being lifted off the scrap rejection roller, the amount of waste generated can be reduced, the failure loss can be reduced, and economic benefits can be created. Utility Model Content

[0003] In view of the above technical problems, the utility model provides a rapid cooling device for a waste rejection roller table of a roller bottom heating furnace.

[0004] In order to achieve the above purpose, the technical solution of the utility model is as follows:

[0005] The roller hearth heating furnace reject roller rapid cooling device includes:

[0006] An upper surface cooling mechanism is arranged on the upper part of the reject slab on the reject roller table;

[0007] A lower surface cooling mechanism is arranged at the lower part of the reject slab on the reject roller table;

[0008] Wherein, the upper surface cooling mechanism and the lower surface cooling mechanism are both connected to the cooling water supply system.

[0009] A slab position sensor is provided at one end of the reject roller, which can detect the head position and tail position of the slab; a slab temperature detector is provided at the other end, which can continuously detect the upper and lower surface temperatures of the slab, and display the measurement results in a curve on the control cabinet;

[0010] Among them, the slab position sensor and the slab temperature detector are respectively connected to the cooling water supply system signal, and are used to feed back detection information to the cooling water supply system.

[0011] The cooling water supply system is located on the control cabinet. When the slab position sensor detects the slab head, it sends a signal to the cooling water supply system, and the cooling water supply system turns on the upper surface cooling mechanism and the lower surface cooling mechanism. When the tail of the slab leaves the slab position sensor, it sends a signal to the cooling water supply system, and the cooling water supply system turns off the upper surface cooling mechanism and the lower surface cooling mechanism.

[0012] The upper surface cooling mechanism comprises 4-8 groups of cooling components, each group of cooling components comprises 10-20 nozzles, and is 300mm-700mm above the reference surface of the waste rejection roller.

[0013] The lower surface cooling mechanism comprises 4-8 groups of cooling components, each group of cooling components comprises 10-20 nozzles, and is 100mm-300mm below the reference surface of the waste rejection roller.

[0014] The beneficial effects of the utility model are as follows: the utility model adds a rapid cooling device to the waste rejection roller, which can automatically and quickly and evenly cool the waste slabs of the heating furnace. When the slab temperature detector detects that the upper and lower surface temperatures of the waste rejection slab are uneven, the water flow of the upper surface cooling mechanism and the lower surface cooling mechanism is adjusted in time to ensure the uniformity of the slab temperature. By solving the problem of uneven cooling of the waste rejection slabs, the thermal deformation of the slabs during lifting is reduced, the amount of waste generated is greatly reduced, and the loss of slabs caused by fault handling is reduced. The utility model can quickly cool the waste rejection slabs of the heating furnace, ensure that the slabs are cooled evenly in the width and length directions, are not deformed during lifting, and meet the conditions for reloading and rolling. The utility model mainly uses the upper surface cooling mechanism and the lower surface cooling mechanism to automatically open water for rapid and uniform cooling when the high-temperature slabs pass through the waste rejection roller. After the surface of the slab is cooled, the requirements that the slabs can be lifted, not deformed, and can be reloaded are met. At the same time, when a CSP production line fails, the heating furnace can continuously reject waste slabs, effectively increasing the buffer distance of the heating furnace, adding time for fault handling, and ensuring that the continuous casting machine continues to cast, thereby reducing the cost loss of stoppage failure. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the utility model;

[0016] Figure 2 It is a top view of the utility model;

[0017] 1-waste rejection roller, 2-waste rejection slab, 3-upper surface cooling mechanism, 4-lower surface cooling mechanism, 5-slab position sensor, 6-slab temperature detector. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail below in combination with specific implementation methods and with reference to the accompanying drawings. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the utility model. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concept of the utility model.

[0019] like Figure 1 and Figure 2 As shown, the rapid cooling device of the scrap rejection roller of the roller bottom heating furnace includes: an upper surface cooling mechanism 3, which is arranged on the upper part of the scrap rejection slab 2 on the scrap rejection roller 1; a lower surface cooling mechanism 4, which is arranged on the lower part of the scrap rejection slab 2 on the scrap rejection roller 1; wherein the upper surface cooling mechanism 3 and the lower surface cooling mechanism 4 are both connected to the cooling water supply system.

[0020] like Figure 1 and Figure 2 As shown, a slab position sensor 5 is arranged at one end of the scrap rejection roller 1, which can detect the head position and tail position of the slab; a slab temperature detector 6 is arranged at the other end, which can continuously detect the upper and lower surface temperatures of the slab, and display the measurement results in a curve on the control cabinet; wherein, the slab position sensor 5 and the slab temperature detector 6 are respectively connected to the cooling water supply system signal, and are used to feed back the detection information to the cooling water supply system.

[0021] like Figure 1 and Figure 2 As shown, the cooling water supply system is located on the control cabinet. When the slab position sensor 5 detects the head of the slab, a signal is sent to the cooling water supply system, and the cooling water supply system turns on the upper surface cooling mechanism 3 and the lower surface cooling mechanism 4. When the tail of the slab leaves the slab position sensor 5, a signal is sent to the cooling water supply system, and the cooling water supply system turns off the upper surface cooling mechanism 3 and the lower surface cooling mechanism 4.

[0022] like Figure 1 and Figure 2 As shown, the upper surface cooling mechanism 3 includes 4-8 groups of cooling components, each group of cooling components includes 10-20 nozzles, and is 300mm-700mm above the reference plane of the waste rejection roller 1.

[0023] like Figure 1 and Figure 2 As shown, the lower surface cooling mechanism 4 includes 4-8 groups of cooling components, each group of cooling components includes 10-20 nozzles, and is 100mm-300mm below the reference plane of the waste rejection roller 1.

[0024] When the utility model is in use, when the rejected slab 2 is rejected from the heating furnace, the head of the slab passes through the slab position sensor 5, and the cooling water supply system opens the upper surface cooling mechanism 3 and the lower surface cooling mechanism 4 at this time, and the slab passes through the upper surface cooling mechanism 3 and the lower surface cooling mechanism 4 at a speed of 0.75m / s to cool. When the tail of the rejected slab 2 leaves the slab position sensor 5, the upper surface cooling mechanism 3 is closed after a delay of 5 seconds, and the lower surface cooling mechanism 4 is closed after a delay of 11 seconds, so as to ensure that the rejected slab 2 completely passes through the upper surface cooling mechanism 3 and the lower surface cooling mechanism 4, and the slab is evenly cooled.

[0025] The slab temperature detector 6 is used to detect the upper and lower surface temperatures of the rejected slab 2. When it is detected that the surface temperature of the rejected slab 2 after spraying is uneven, the cooling water supply system adjusts the spraying water volume of the upper surface cooling mechanism 3 and the lower surface cooling mechanism 4 to ensure uniform cooling of the slab and meet the conditions for lifting the slab.

[0026] When it is detected that the rejected slab 2 passes through the slab temperature detector 6, the upper and lower surface temperatures of the slab are automatically detected, and the temperature curve is displayed on the on-site control cabinet. When the temperature difference of the slab changes after cooling, the cooling water supply system automatically adjusts the water flow of the upper surface cooling mechanism 3 and the lower surface cooling mechanism 4, quickly and evenly cools the rejected slab 2, so that the slab will not be deformed during the lifting process, greatly reducing the amount of waste, reducing the loss of rejected slabs due to fault handling, and improving economic benefits.

[0027] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. The roller-bottom heating furnace waste roller rapid cooling device is characterized by: include: An upper surface cooling mechanism (3) is arranged on the upper part of the waste rejection slab (2) on the waste rejection roller (1); A lower surface cooling mechanism (4) is arranged at the lower part of the waste rejection slab (2) on the waste rejection roller (1); Wherein, the upper surface cooling mechanism (3) and the lower surface cooling mechanism (4) are both connected to the cooling water supply system; A slab position sensor (5) is provided at one end of the reject roller (1) to detect the head position and tail position of the slab; a slab temperature detector (6) is provided at the other end to continuously detect the upper and lower surface temperatures of the slab and display the measurement results in the form of a curve on the control cabinet; The slab position sensor (5) and the slab temperature detector (6) are respectively connected to the cooling water supply system signals, and are used to feed back detection information to the cooling water supply system.

2. The roller hearth heating furnace waste rejection roller rapid cooling device according to claim 1 is characterized in that: The cooling water supply system is located on the control cabinet. When the slab position sensor (5) detects the head of the slab, a signal is fed to the cooling water supply system, and the cooling water supply system turns on the upper surface cooling mechanism (3) and the lower surface cooling mechanism (4). When the tail of the slab leaves the slab position sensor (5), a signal is fed to the cooling water supply system, and the cooling water supply system turns off the upper surface cooling mechanism (3) and the lower surface cooling mechanism (4).

3. The roller hearth heating furnace waste rejection roller rapid cooling device according to claim 1 is characterized in that: The upper surface cooling mechanism (3) comprises 4-8 groups of cooling components, each group of cooling components comprises 10-20 nozzles, and is 300mm-700mm above the reference surface of the waste rejection roller (1).

4. The roller hearth heating furnace waste rejection roller rapid cooling device according to claim 1 or 3, characterized in that: The lower surface cooling mechanism (4) comprises 4-8 groups of cooling components, each group of cooling components comprises 10-20 nozzles, and is 100 mm to 300 mm below the reference plane of the waste rejection roller (1).

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