KR100805069B1 - Automatic nozzle spraying apparatus for protecting steel tap hole - Google Patents

Abstract

The present invention relates to an automatic nozzle spraying device for tap protection, which is inserted into the tap during drilling in the converter process to prevent wear of the sleeve and always maintain a tap time to improve the quality of the product.

The present invention is a device for inserting into the tap during drilling in the converter process to ensure the protection and tapping time of the sleeve, in order to supply the injection material 51 is installed outside the tapping hole (32) is easily cured And a spray material supply line 18 in which the water 5 supply line 17, the air 4 and the refractory 6 supply line 12, and the two supply lines 12, 17 are combined. Spray material supply unit 20; And a plurality of nozzle holes 2 installed at the entrance of the tap hole 32 and connected to the spray material supply unit 20 and having a plurality of nozzle holes 2 on an outer circumferential surface thereof, the nozzle body 1 having a cylindrical shape. The holes 2 are evenly arranged on the circumferential surface of the nozzle body 1, and a nozzle head 3 is mounted on one side of the nozzle body 1, and a rectangular nozzle hole is provided on the outer circumferential surface of the nozzle head 3. A 3a is formed and a plate 3b is mounted on the front surface thereof, and an injection block 7 is mounted on the other side of the nozzle body 1, and the spray material 51 is formed through the nozzle hole 2. It includes; injection nozzle 10 for evenly spraying in the circumferential direction, including, by spraying the injection material 51 to the tapping hole 32 with the injection nozzle 10, to protect the tapping hole 32 and It provides automatic nozzle injection device for tap protection to maintain constant tapping condition.

Automatic nozzle sprayer, tap, sleeve, nozzle, refractory

Description

Automatic nozzle spraying device for protection of tap hole {AUTOMATIC NOZZLE SPRAYING APPARATUS FOR PROTECTING STEEL TAP HOLE}

1A is a state diagram in which molten steel taps into a general tap;

Figure 1b is a cross-sectional view showing a state in which the tap shape of Figure 1a is worn;

Figure 2a is a state diagram tilted the converter to the tapping side for the conventional tap-changing;

Figure 2b is a state of insertion of a new sleeve after removing the closed sleeve of the conventional tap.

FIG. 2C shows the insertion of a new sleeve into the tap of FIG. 2B; FIG.

Figure 3a is a working state showing the use of the injection nozzle inside the conventional tap hole;

3B is an enlarged cross-sectional view illustrating the use of the injection nozzle of FIG. 3A;

Figure 4a is a schematic diagram of the injection nozzle of the automatic nozzle spraying device for protecting the tap according to the present invention;

4B is an exploded view of the injection nozzle of FIG. 4A;

4C is a cross-sectional view taken along the line A-A of FIG. 4A;

4D is a cross-sectional view taken along the line BB of FIG. 4A;

Figure 5a is a schematic diagram showing a state in which the injection nozzle is inserted into the tap hole in accordance with the present invention;

5B is a cross-sectional view showing a wear state inside the tap hole;

5C is a cross-sectional view taken along the line C-C in FIG. 5A;                 

6 is an overall schematic view of an automatic nozzle spraying device according to the present invention; And

7 is a flow chart of the automatic nozzle injection device according to the present invention.

 1 ... nozzle body 2 ... nozzle hole

 3 ... nozzle head 4 ... air

 5 ... water 6 ... refractory

 7 ... Injection port 10 ... Injection nozzle

10 ... light fall collecting unit 11 ... refractory supply valve

12 ... supply line 14 ... water supply valve

17 ... Supply Line 18 ... Abrasive Supply Line

19 ... air supply valve 20 ... spray material supply

30 ... conventional jet nozzle 31 ... sleeve

32 ... exit 32a ... wear section

35 ... converter 42 ... slag

41 ... molten steel 45 ... pipe

47 ... Timer 48 ... Drive

100 ... automatic nozzle spraying device for tap protection according to the present invention

The present invention relates to a device for maintaining a constant tapping state is inserted into the tap, more specifically, inserted into the tap during drilling in the converter process to prevent wear of the sleeve and always maintain a constant tap time of the product An automatic nozzle spraying device for protecting a tap to improve quality.

FIG. 1A illustrates a state in which molten steel taps into a general tap, and FIG. 1B illustrates a state in which the tap inside shape of FIG. 1A is worn out.

1A and 1B, in general, after the drilling operation, the molten steel 41 is tapped through the tapping hole 32 to the tapping ladles. Usually, while the number of tapping through the tapping hole 32 increases, the tapping hole 32 and the sleeve 31 are worn by the high temperature of the molten steel, and thus the shape thereof is changed. That is, the inner diameter of the tap hole 32 and the sleeve 31 is worn (32a) to become wider than the original initial state, and thus the excess tapping more than the standard is made, the tapping time is shorter than the standard molten steel per unit time The outgoing amounts of the 41 and the slag 42 become larger than the standard, which adversely affects the product quality of the molten steel.

If the outflow of the slag 42 is large, it becomes a factor of the sheath (P: phosphorus), and excessive use of the deoxidizer has to replace the outlet sleeve 31.

Usually the tapping work is performed periodically until the end of its life, and when the tapping work is performed approximately 80 to 100 times, the tapping hole 32 and the sleeve 31 are replaced, which takes a long time for this replacement work. Therefore, it acts as the biggest cause for the decrease in productivity.

In addition, since the amount of slag is not constantly adjusted during the tapping operation to adversely affect the quality of the product is made of molten steel in order to prevent this conventionally, the tapping hole 32 using the general pipe 45 as shown in FIG. ), And the tapping work was performed.

FIG. 2A is a state diagram in which the converter is tilted toward the tap side for exchanging the conventional tap, and FIG. 2B shows the insertion of a new sleeve after removing the closed sleeve of the tap at the conventional tap, and FIG. 2C is a new sleeve into the tap of FIG. 2B. The state where insertion of is completed is shown.

2A to 2C, after the general pipe 45 is inserted into the tap hole 32, molten steel is supplied through the pipe 45, but the pipe 45 is eccentric to have a constant molten steel. There was a problem that the supply of the molten steel is difficult to distinguish between the molten steel 41 and the slag 42.

Figure 3a shows the use of the injection nozzle in the conventional tap inside, Figure 3b is an enlarged view of the injection nozzle portion of Figure 3a.

3A and 3B, the pipe 45 is used and the spray nozzle 30 is installed in the tapping hole 32 in the inner frame, and the fireproof materials are sprayed to the tapping hole 32 side to tap the tapping. The eccentricity of the pipe 45 is prevented by compensating for wear occurring on the side of the sphere 32.

However, since the spray nozzle 30 sprays the refractory material from one side direction of the tap hole 32 as shown in FIG. 3B, the refractory material is not constantly supplied around the tap hole 32. There is a problem that the eccentricity of the pipe 45 is not easily compensated.

The present invention is to solve the conventional problems as described above, by spraying the refractory evenly in the circumferential direction inside the exit, to compensate for the wear of the tap and sleeve by tapping work to protect the tap and always the amount of tapping Its purpose is to provide an automatic nozzle jetting device for protecting the exits.

The present invention, in order to achieve the object as described above, in the device for inserting into the tap during drilling in the converter process to ensure the protection and tapping time of the sleeve, the injection material which is installed outside the tap and easily hardened In order to supply, the injection material supply unit including a water supply line, an air and refractory supply line and the injection material supply line to the two supply lines are combined; And a movable nozzle installed at the entrance of the tap opening, connected to the spray material supply unit, and having a plurality of nozzle holes on the outer circumferential surface, the nozzle body having a cylindrical shape, wherein the nozzle holes are evenly disposed on the circumferential surface of the nozzle body. A nozzle head is mounted on one side of the nozzle body, a square nozzle hole is formed on an outer circumferential surface of the nozzle head, and a plate is mounted on the front surface thereof, and an injection block is mounted on the other side of the nozzle body. Automatic injection nozzle for injecting the injection material evenly in the circumferential direction through the injection nozzle by spraying the injection material to the tap portion with the injection nozzle, to protect the tap and maintain a constant tapping state By providing a nozzle spray.

Hereinafter, the configuration of the automatic nozzle spray device for protecting the tap opening according to the present invention will be described in more detail with reference to the drawings.

Figure 4a schematically shows the injection nozzle 10 of the automatic nozzle injection device for protecting the mouth according to the present invention, Figure 4b is an exploded view showing the injection nozzle 10 of Figure 4a, Figure 4c shows AA of Figure 4a The cross section cut along the figure is shown, and FIG. 4D shows the cross section cut along the BB of FIG. 4A. In addition, Figure 5a shows the automatic nozzle injection device as a whole.

4A to 4D and 5A, the automatic nozzle spraying device 100 (hereinafter, referred to as an automatic nozzle spraying device) for protecting a tap according to the present invention is largely installed outside the tapping hole 32 to be sprayed ( It is composed of an injection material supply unit 20 for supplying 51 and an injection nozzle 10 connected to the injection material supply unit 20.

4A to 4D, the injection nozzle 10 includes a cylindrical nozzle body 1. The nozzle body 1 includes a plurality of nozzle holes 2 in the circumferential surface. It is formed to evenly spray the jets supplied into the nozzle body 2 in the circumferential direction.

The nozzle body 1 has a nozzle head 3 mounted at one side thereof, a rectangular nozzle hole 3a is formed at an outer circumferential surface of the nozzle head 3, and a plate 3b is mounted at the front surface thereof. . The nozzle head 3 is coupled to the nozzle body 1 with a screw 1a so that detachment is free. The through hole 9 is drilled in the screw 1a so that the injection material supplied to the nozzle body 1 is transferred to the nozzle head 3.

Since the nozzle head 3 is detachable to the nozzle body 1 with a screw 1a, when the through hole 9 to the nozzle head is blocked, the nozzle head 3 is disassembled and the through hole ( 9) Remove the spraying material to block and then assemble to the nozzle body (1) to use.

The plate 3b tightly blocks the front surface of the nozzle head 3 so that the injection material flowing into the nozzle head 3 is not ejected toward the front direction, but only the circumferential surface through the nozzle hole 2. Emitted only radially.                     

The nozzle body 1 is mounted to the injection block 7 on the side in which the injection material flows. Similarly to the configuration of the nozzle head 3, the injection block 7 can be detachably attached to the nozzle body 1 with a screw 1a. Thus, when the inner diameter 7a of the injection block 7 is blocked, it is disassembled. After removing the injection material 51 blocking the inlet and then reassembled to use.

The injection block 7 sets the size of the inner diameter 7a in proportion to the number of nozzle holes 2 formed on the total circumferential surface of the nozzle body 1, and thus the inner diameter due to the injection force of the injection material. Do not cause pressure loss in (7a).

The nozzle holes 2 may be formed in a row at intervals of 90 ° with respect to the circumferential direction on the nozzle body 1, and may be formed irregularly. It is only necessary to drill the nozzles.

The injection block 7 of the injection nozzle 10 is connected to an injector 16 installed outside the tap hole 32 to receive the injection force therefrom.

In addition, the injection block 7 is connected to the injection material supply unit 20 shown in Figure 5a. Referring to FIG. 5A, the spray material supply unit 20 includes a water supply line 17 for supplying water 5, and a supply line 12 for air 4 and a refractory 6.

Water 5 is supplied through a pipe 14a from a water reservoir (not shown) and the supply to the valve 14 is regulated. Air 4 is supplied through the air supply pipe 19a, and the supply is regulated through the valve 19. The air 4 supplied through the pipe 19a meets the refractory feeder 11a valve 11 after passing through the valve 19. The refractory supply from the refractory supply (11a) is adjusted according to the control of the valve 11 and when the valve 11 is opened, the air and the refractory are mixed through the supply line (12) so that the injection nozzle (10) Are each supplied.

In addition, the water supply line 17 and the air and refractory supply lines 12 are combined to form an injection material 51 and then supplied to the injection material valve 18a installed close to the tap hole 32. When the injection material valve 18a is opened, the injection material valve 18a may be supplied to the injection nozzle 10 through the injection material supply line 18 connected to the injection nozzle 10.

At the exit hole 32, a dart feeder 46 for seating the injection nozzle 10 is installed. A driving device 48 (for example, a cylinder device) for operating the dart injector 46 is connected to one side of the dart injector 46, and the dart injector 46 automatically drives the injection nozzle 10 according to the driving thereof. It enables the transfer to the inside and outside the tap 32.

The dart injector 46 is provided with a timer 47 and the spray nozzle 10 can be set to be automatically transferred to the inside or outside of the tap hole 32 according to the time adjustment of the timer 47. In addition, the time remaining in the tap hole 32 of the injection nozzle 10 may be adjusted.

Referring to FIG. 6, the non-described reference numerals will be described. The door 53 is installed at the tap hole 32, and the tap hole 32 is connected to the converter 35 for supplying molten steel. In the 35, an oxygen lance 39 for supplying oxygen is provided.

Hereinafter, the operation of the automatic nozzle injection device 100 according to the present invention.

Figure 5a shows a state in which the injection nozzle 10 of the automatic nozzle spraying apparatus 100 according to the present invention is inserted into the tap hole 32, Figure 5b is a wear portion 32a of the tap hole 32 5C shows a cross section taken by CC of FIG. 5A. In addition, Figure 7 shows the workflow of the automatic nozzle injection device 100 according to the present invention.

Referring to FIGS. 5A to 7, in response to the blow start signal and the ignition signal of the converter, the door side door 53 is opened and the injector 16 and the driving device 48 are operated, which is the step of a of FIG. Corresponds to

At this time, the supply valves of the air 4, the water 5, and the refractory 6 are opened to supply the air 4, the water 5, and the refractory 6, which are respectively supplied to the supply lines 12 ( 17 is moved through the spray material valve (18a) to the spray material supply line 18 and mixed. Alternatively, the respective supply lines 12 and 17 may be directly connected to the injection nozzle 10 so that the injection material 51 may be mixed in the injection nozzle 10.

When the drive device 48 is operated, the converter 35 is not tilted and is already disposed in a parallel position, thereby moving the dart introducer 46 toward the tap hole 32 and thus the dart introducer ( When the injection nozzle 10 disposed on the 46 is moved into the tap hole 32 and the injection nozzle 10 is moved to one end of the tap hole 32, the operation of the driving device 48 is stopped. Let's do it.

Referring to FIG. 5A, the injection nozzle 10 is introduced into the tap hole 32 while being sprayed in a radial 360 ° direction by the injection force of the injector 16 through a plurality of nozzle holes 2. ), Which corresponds to the step of b of FIG. According to the execution of the spraying operation, as shown in FIG. 5B, the wear part 32a of the tap hole 32 is filled with the spraying material 51 sprayed as shown in FIG. 5C and fused and hardened by heat generated during drilling. Harden.

The injection time of the injection material 51 is preferably set to approximately 1 to 3 minutes by the timer 47.

When the wear part 32a is filled by the injection material 51 and the compensating tap hole 32 is formed, the tapping amount of the molten steel 41 injected during drilling is kept constant and the tap hole 32 is Since the tapping time is longer than before the shape is compensated for, the tapping amounts of the molten steel 41 and the slag 42 that are tapping are properly adjusted to prevent the skin from developing and thus improve the quality of the product.

When the set time by the timer 47 ends, the driving device 48 is operated, the operation of the injector 16 is stopped, the spray material valve 18a is closed, and then the air 4, The supply valves 14, 15, 19 of the water 5 and the refractory 6 are in turn closed, corresponding to the step of c of FIG. 7.

By the driving of the driving device 48, the injection nozzle 10 is rearranged to the inlet side of the tap hole 32, which is the initial position, and after the driving device 48 ends (corresponding to d of FIG. 7). ), The door 53 on the exit port 32 side is closed and waits for the next operation.

The series of actions as described above is terminated after a series of work steps are automatically performed in one start action by setting the time taken for each step in the timer 47 in advance.

As described above, a constant tapping amount of molten steel is obtained according to a series of actions of the automatic nozzle spraying device 100 according to the present invention.

As described above, according to the automatic nozzle spraying apparatus, the nozzles are sprayed evenly in the circumferential direction inside the tap to compensate for the wear of the tap and the sleeve to protect the tap and the sleeve, thereby reducing the number of replacement of the tap. This has a useful effect of improving work efficiency and reducing costs.

In addition, according to the automatic nozzle spraying apparatus according to the present invention, the molten steel is always put into the converter constantly, and the output amount of molten steel and slag per unit time is properly compensated, and there is a useful effect of ensuring the stability of the quality.

While the invention has been shown and described with respect to specific embodiments thereof, it will be apparent to those skilled in the art that various changes and modifications can be made without departing from the spirit or scope of the invention as set forth in the claims below. I would like to know that those who have knowledge of Easily know.

Claims (5)

In the device for inserting into the tap during drilling in the converter process to ensure the protection and tapping time of the sleeve, In order to supply the spraying material 51 which is installed outside the tap hole 32 and is easily cured, the water 5 supply line 17, the air 4 and the refractory 6 supply line 12, and the two An injection material supply unit 20 including an injection material supply line 18 into which supply lines 12 and 17 are combined; And It is installed at the entrance of the tap hole 32 and is connected to the injection material supply unit 20 and has a plurality of nozzle holes (2) on the outer circumferential surface, and includes a cylindrical nozzle body (1), the nozzle hole (2) is evenly disposed on the circumferential surface of the nozzle body (1), the nozzle head (3) is mounted on one side of the nozzle body (1) and the rectangular nozzle hole (on the outer circumferential surface of the nozzle head (3) ( 3a) is formed, and a plate 3b is mounted on the front surface thereof, and an injection block 7 is mounted on the other side of the nozzle body 1 so that the spray material 51 is passed through the nozzle hole 2. It includes; injection nozzle 10 for evenly spraying in the circumferential direction, Automatic nozzle injection device for the nozzle protection for spraying the injection material (51) to the tapping hole (32) portion by the injection nozzle 10, to maintain the protection and constant tapping state of the tapping hole (32). delete The method of claim 1, The injection nozzle 10 is connected to the injector 16 installed outside the tap hole 32, The nozzle head (3) and the injection block (7) is an automatic nozzle spraying device, characterized in that each of the nozzle body (1) is coupled with a screw (1a) freely detachable. The method of claim 1, The spray material 51 is a mixture of air 4, water 5 and refractory 6, Automatic nozzle injection device, characterized in that for supplying the injection material (51) to the injection nozzle (10) through the supply lines (12) (17) (18). The method of claim 1, The dart feeder 46 connected to the driving device 48 and the timer 47 installed therein are additionally included to seat the injection nozzle 10 on the tap hole 32 side and to be transported into the tap hole 32. Automatic nozzle injection device, characterized in that for automatically moving the injection nozzle (10) into or out of the tapping hole (32) according to the time set in the timer (47).

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