KR100963313B1 - Apparatus for removing dust in booster and RH-system - Google Patents

Abstract

The present invention relates to a dust removal apparatus of a vacuum booster capable of removing dust attached to an inside of a vacuum booster during a vacuum degassing process by using high speed steam injected during a vacuum degassing operation, and a vacuum degassing apparatus having the same. The dust removal apparatus of the vacuum booster according to the present invention is a device for removing dust attached to a booster, comprising: a drum provided inside the booster duct and rotated by steam injected; A cylinder portion operated by the rotation of the drum; And an air hammer that strikes the outer wall of the booster duct in association with the operation of the cylinder.

Vacuum Degassing, Booster, Dust, Cylinder, Air Hammer

Description

Dust removing device of vacuum booster and vacuum degassing apparatus having same {Apparatus for removing dust in booster and RH-system}

The present invention relates to a dust removing device of a vacuum booster and a vacuum degassing apparatus having the same, and more particularly, power of high speed steam injected during vacuum degassing operation of dust attached to a vacuum booster during a vacuum degassing process. The present invention relates to a dust removing device of a vacuum booster that can be removed using a vacuum degassing apparatus having the same.

One of the facilities for manufacturing high clean steel in steel mills is the vacuum degassing facility (Reinstahl Huten Werke Heraus, RH). In this vacuum degassing facility, when the pressure in the vacuum vessel (vessel) is reduced, the molten steel is vacuumed. As it is made of high clean steel as it rises and falls into the tank, it is necessary to manage the vacuum in the vacuum chamber to a degree close to absolute vacuum in order to secure the quality required by the demand of the vacuum degassing operation.

In a conventional vacuum degassing facility, a method of forming a vacuum is performed by injecting high pressure steam at high speed into a venturi tube type booster during vacuum degassing, and a suction force is generated in a direction in which the steam is injected, thereby creating a vacuum inside the vessel. The vacuum is formed while is exhausted. The steam injected into the booster reaches the condenser, and the condenser is forced to liquefy steam by spraying cooling water. At this time, a vacuum is formed as much as the volume of steam decreases, and the vacuum is maintained as this series of steps proceeds continuously.

In this vacuum forming process, dust, which is mixed with gas, powder and condensate, is accumulated on the inner wall of the booster. Thus, in the related art, as shown in FIG. 1, the magnetic hammer 4 is attached to the outer wall of the booster duct 1 to operate or the dust 6 inside the booster duct 1 is blown by a worker directly using the hammer. ) Was removed. However, in order to operate the magnetic hammer 4, there was a problem that a separate power supply 5 had to be supplied, and the worker hitting the booster directly had a problem of damaging the booster or reducing work efficiency.

The present invention has been made to solve the above-described problems, by using the steam injected at high speed when generating a vacuum as a power hitting the outer wall of the booster can remove the dust inside the booster without providing additional power An object of the present invention is to provide a dust removing device of a vacuum booster and a vacuum degassing apparatus having the same.

Dust removal apparatus of the vacuum booster according to the present invention for achieving the above object, in the apparatus for removing the dust attached to the booster, which is provided in the booster duct, the drum is rotated by the sprayed steam and ; A cylinder portion operated by the rotation of the drum; And an air hammer that strikes the outer wall of the booster duct in association with the operation of the cylinder.

The cylinder portion and the cylinder rod is provided with a cylinder head; A cylinder chamber in which the cylinder head is accommodated and reciprocated; It is characterized in that it comprises a link bar is connected to the cylinder rod and the connection pin is extended, and connected to the eccentric to the rotating shaft of the drum.

The drum is provided with an eccentric rod which is connected to be eccentric at the center of rotation, and the link bar is connected to the eccentric rod so that the cylinder rod is linearly moved by the link bar when the eccentric rod is circularly moved.

Lower and upper sides of the cylinder chamber are provided with first and second air lines through which air is supplied and exhausted, respectively, and the first and second air lines are provided with check valves, respectively.

A hammer chamber having an opening at one side, the opening being in close contact with an outer wall of the booster duct; And a hammer accommodated in the hammer chamber and reciprocated, wherein one end and the other end of the hammer chamber are provided with third and fourth air lines communicating with the cylinder, respectively.

The cylinder unit includes a cylinder rod having a cylinder head, a cylinder chamber in which the cylinder head is accommodated and reciprocated, and the third air line communicates a lower side of the cylinder chamber and one side of the hammer chamber. The air line is characterized in that the upper side of the cylinder chamber communicates with the other side of the hammer chamber.

The cylinder portion is characterized in that a pair is provided on both sides of the drum.

The air hammer portion is characterized in that the plurality of the provided on the outer wall of the booster duct at a predetermined interval.

In addition, the vacuum degassing facility according to the present invention comprises a vessel in which a vacuum is formed to reflux molten steel in the ladle; A plurality of vertical boosters connected to the vessel to generate a vacuum; A condenser connected to the booster to liquefy steam; It includes a watering pump for collecting the liquid generated in the condenser, the upper or lower portion of the booster duct constituting the booster is provided with a steam spray nozzle for spraying high-speed steam in the direction opposite to the installation direction of the vessel, At the position opposite to the installation position of the steam injection nozzle is provided with a drum that is rotated by the steam is injected, the air that strikes the outer wall of the booster duct in connection with the operation of the cylinder portion and the cylinder portion operated by the rotation of the drum Characterized in that the hammer portion is provided.

The cylinder portion and the cylinder rod is provided with a cylinder head; A cylinder chamber in which the cylinder head is accommodated and reciprocated; A link bar extending and connected to the cylinder rod and a connecting pin, the link bar being eccentrically connected to the rotating shaft of the drum, and the rotating shaft of the drum is provided with an eccentric rod connected to be eccentrically at the center of rotation, and the link bar is the eccentric. When the eccentric rod is circularly connected to the rod, the cylinder rod is linearly moved by the link bar.

A hammer chamber having an opening at one side, the opening being in close contact with an outer wall of the booster duct; And a hammer accommodated in the hammer chamber to reciprocate, wherein the cylinder portion includes a cylinder rod having a cylinder head, a cylinder chamber in which the cylinder head is reciprocated, and a lower side of the cylinder chamber and the hammer. A third air line for communicating one side of the seal is provided, and the fourth air line for communicating the upper side of the cylinder chamber and the other side of the hammer chamber is provided.

According to the present invention, since it is possible to hit the outer wall of the booster duct by using the high speed steam used in the vacuum generation as a power without providing a separate power it can be expected to reduce the cost and efficient removal of dust.

In addition, since the booster duct is hit by the air hammer, the operator does not have to participate in the operation directly, thereby preventing an accident of the operator and improving the efficiency of the work.

Hereinafter, with reference to the accompanying drawings will be described an embodiment of the present invention in more detail.

However, the present invention is not limited to the embodiments disclosed below, but will be implemented in various forms, and only the embodiments are intended to complete the disclosure of the present invention, and to those skilled in the art to fully understand the scope of the invention. It is provided to inform you.

First, the configuration of the vacuum degassing facility in which the dust removing device of the vacuum booster according to the present invention is installed will be described as follows.

The vacuum degassing unit has a vessel in which a vacuum is formed to reflux molten steel in the ladle, a plurality of vertical boosters 7 connected to the vessel to generate a vacuum, and a booster 1 to liquefy steam. And a watering pump for collecting the liquid generated in the condenser. At this time, the top or bottom of the booster (7) is provided with a steam injection nozzle (2) for injecting high-speed steam of Mach speed in the direction opposite to the installation direction of the vessel. The vessel, booster (7), condenser and watering pump are typical devices constituting the vacuum degassing facility, and detailed descriptions of the structure and operation of the device will be omitted. However, in the present invention, the booster 7 refers to at least one connector 3 connecting to the vessel or another booster, a tubular booster duct 1 and the steam injection nozzle 2.

2 is a schematic view showing a dust removing apparatus of the vacuum booster according to the present invention, Figure 3 is a block diagram showing the configuration of the dust removing apparatus of the vacuum booster according to the present invention.

As shown in the drawings, the dust removing apparatus of the vacuum booster according to the present invention includes a drum (10) provided inside the booster duct (1) and rotated by steam injected from the steam spray nozzle (2); A cylinder part 20 operated by the rotation of the drum 10; It includes an air hammer 30 to hit the outer wall of the booster duct (1) in conjunction with the operation of the cylinder portion (20).

The drum 10 is installed at a position opposite to the steam spray nozzle 2 installed inside the booster duct 1, preferably at the top or the bottom of the booster duct 1, and the steam spray nozzle 2 It is a means to be rotated by the high speed steam injected from. Thus, the drum 10 is provided with a rotating shaft 11 at the center thereof. In addition, the outer peripheral surface of the drum 10 is preferably provided with a plurality of wings 13 at equal intervals in order to receive the maximum influence of steam.

In addition, the rotation shaft 11 is provided with an eccentric rod 15 extending the length of the rotation shaft 11 in a position eccentric from the center thereof. Thus, by the rotation of the rotary shaft 11, the eccentric rod 15 is circularly moved along a circumference having a radius equal to the distance provided by the eccentric rod 15 from the center of the rotary shaft 11.

The cylinder unit 20 is a means for providing power to the air hammer unit 30 as it is operated in conjunction with the drum 10, the cylinder chamber 21 and the cylinder chamber in which a receiving space is formed therein ( Cylinder head 23 accommodated in the receiving space of the 21 and reciprocating, the cylinder rod 25 for operating the cylinder head 23 and the cylinder rod 25 and the connecting pin (27a) connected to the cylinder rod It consists of a link bar 27 extending the length of 25. The cylinder chamber 21, the cylinder head 23 and the cylinder rod 25 is a configuration of a general cylinder and detailed description thereof will be omitted. However, the lower and upper sides of the cylinder chamber 21 are provided with first and second air lines 41 and 42 to which air is supplied and exhausted, respectively, and the first and second air lines 41 and 42 are respectively provided. First and second check valves 51 and 52 are provided, respectively.

The link bar 27 has one side connected to the cylinder rod 25 by a connecting pin 27a, and the other side is connected to the eccentric rod 15 so that the circular movement of the eccentric rod 15 is carried out by the cylinder rod 25. To a straight line.

The cylinder portion 20 is preferably provided on each of the rotating shaft 11 is provided with a pair on both sides of the drum (10).

The air hammer unit 30 is a means for interlocking by the operation of the cylinder unit 20 and striking the outer wall of the booster duct 1, having an opening to one side, and the opening closely contacting the outer wall of the booster duct 1. A hammer chamber 31 installed therein; And a hammer 33 accommodated in the hammer chamber 31 to reciprocate. The hammer 33 is preferably provided with a sealing member 33a, such as an O-ring, on the outer circumferential surface thereof to be in close contact with the inner wall of the hammer chamber 31. The interior is bisected based on the hammer 33.

At this time, at least one first through hole 31a is formed at one side of the hammer chamber 31 so that the third air line 43 communicating with the lower side of the cylinder chamber 21 is connected, and the hammer chamber 31 is connected. At least one second through hole 31b is formed at the other side thereof to connect the fourth air line 44 communicating with the upper side of the cylinder chamber 21. Thus, when the cylinder head 23 is compressed upward in the cylinder chamber 21, the compressed air is pushed into the other side of the hammer chamber 31 through the fourth air line 44 to push the hammer 33. To hit the wall of the booster duct (1). When the cylinder head 23 is compressed downward in the cylinder chamber 21, the compressed air is injected into one side of the hammer chamber 31 through the third air line 43. Push it apart from the outer wall of the booster duct 1. Therefore, it is preferable that the forming direction of the second through hole 31b faces the direction opposite to the outer wall surface of the booster duct 1 so that the hammer 33 is easily separated from the wall surface of the booster duct 1.

Preferably, the air hammer unit 30 is provided on the outer wall of the booster duct 1 at a predetermined interval. At this time, when the number of the air hammer unit 30 increases, the number of the third and fourth air lines 43 and 44 connected to the cylinder chamber 21 in response to the increase in the number of the air hammer unit 30 is increased. It is desirable to increase.

The operating state of the dust removing device of the vacuum booster according to the present invention configured as described above will be described with reference to the drawings.

4a and 4b is an operating state diagram showing an operating state of the dust removing device of the vacuum booster according to the present invention. The description will be given with reference to the cylinder portion 20 and the air hammer portion 30 provided on the left side of the drum in FIGS. 4A and 4B as an example.

As shown in FIG. 4A, when the drum is rotated by the high speed steam injected from the steam injection nozzle 2, the rotating shaft 11 is rotated in association with the rotating shaft 11, and the eccentric rod 15 is provided to be eccentric to the rotating shaft 11. The circular motion is located on the top of the rotary shaft (11). Then, the cylinder rod 25 is linearly moved by the link bar 27 connected to the eccentric rod 15, and the cylinder head 23 is compressed to the upper side of the cylinder chamber 21. At this time, the first check valve 51 is maintained in a closed state, and the compressed air from the upper side of the cylinder chamber 21 is supplied to the first through hole 31a of the hammer chamber 31 through the third air line 43. Accordingly, the hammer 33 is pushed in the booster duct 1 outer wall direction to strike the wall surface of the booster duct 1. At this time, as the second check valve 52 is opened, the second through hole in the hammer chamber 31 is sucked as air in the lower portion of the cylinder head 23 is sucked in the cylinder chamber 21. 31b) and the fourth air line 44 help to evacuate the air.

Then, as shown in FIG. 4B, if the rotation of the drum 10 is continued by the sprayed high speed steam and the rotating shaft 11 is rotated half a turn, the eccentric rod 15 is circularly moved, and the rotating shaft 11 is located at the bottom. Is located. Then, the cylinder rod 25 is linearly moved by the link bar 27 connected to the eccentric rod 15, and the cylinder head 23 is compressed to the lower side of the cylinder chamber 21. At this time, the second check valve 52 is maintained in a closed state so that the compressed air from the lower side of the cylinder chamber 21 is supplied to the second through hole 31b of the hammer chamber 31 through the fourth air line 44. The hammer 33 is thus pushed away from the wall surface of the booster duct 1 by pushing it against the outer wall of the booster duct 1. At this time, the first check valve 51 is opened to suck the air present in the upper portion of the cylinder head 23 from the inside of the cylinder chamber 21. And helps the air to be exhausted through the third air line 43.

As shown in FIGS. 4A and 4B, the hammer 33 continuously strikes the wall of the booster duct 1 and accumulates on the inner wall of the booster duct 1 as the operation of the drum 10 is repeated. Dust is eliminated from the inner wall of the booster duct (1).

1 is a schematic view showing a dust removal apparatus of a conventional vacuum booster,

2 is a schematic view showing a dust removal apparatus of the vacuum booster according to the present invention,

Figure 3 is a block diagram showing the configuration of the dust removing device of the vacuum booster according to the present invention,

4a and 4b is an operating state diagram showing an operating state of the dust removing device of the vacuum booster according to the present invention.

<Explanation of symbols for the main parts of the drawings>

10: drum 11: rotary shaft

13: wing 15: eccentric rod

20: cylinder 21: cylinder chamber

23: cylinder head 25: cylinder rod

27: link bar 27a: connecting pin

30: air hammer part 31: hammer room

31a: first through hole 31b: second through hole

33: hammer 33a: sealing member

41: first airline 42: second airline

43: third airline 44: fourth airline

51: first check valve 52: second check valve

Claims (11)

In the device for removing dust attached to the inside of the booster, A drum provided inside the booster duct and rotated by steam injected; A cylinder portion operated by the rotation of the drum; And an air hammer unit hitting the outer wall of the booster duct in association with the operation of the cylinder unit. The method of claim 1, wherein the cylinder portion A cylinder rod having a cylinder head; A cylinder chamber in which the cylinder head is accommodated and reciprocated; And a link bar connected to the cylinder rod and connected with a connection pin, the link bar being eccentrically connected to the rotating shaft of the drum. The method according to claim 2, The rotary shaft of the drum is provided with an eccentric rod connected to be eccentric at the center of rotation, the link bar is connected to the eccentric rod, when the eccentric rod is circular motion, the cylinder rod is linearly moved by the link bar Booster dust removal device. The method according to claim 2, Dust removal of the vacuum booster, characterized in that the lower and upper sides of the cylinder chamber is provided with first and second air lines for supplying and exhausting air, respectively, and the first and second air lines are provided with check valves, respectively. Device. The method of claim 1, wherein the air hammer unit A hammer chamber having an opening at one side, the opening being in close contact with an outer wall of the booster duct; A hammer accommodated in the hammer chamber and reciprocated, The dust removal apparatus of the vacuum booster, characterized in that the third and fourth air lines which are in communication with the cylinder portion at one end and the other end of the hammer chamber, respectively. The method according to claim 5, The cylinder portion includes a cylinder rod having a cylinder head, a cylinder chamber in which the cylinder head is accommodated and reciprocated, The third air line communicates the lower side of the cylinder chamber and one side of the hammer chamber, and the fourth air line communicates the upper side of the cylinder chamber and the other side of the hammer chamber to remove dust. Device. The method according to claim 1, The cylinder portion dust removing device of the vacuum booster, characterized in that a pair is provided on both sides of the drum. The method according to claim 1, The dust removal apparatus of the vacuum booster, characterized in that a plurality of air hammer is provided on the outer wall of the booster duct at a predetermined interval. A vacuum degassing facility having a booster for forming a vacuum and having a device for removing dust attached to the inside of the booster, A vacuum is formed to reflux the molten steel in the ladle; A plurality of vertical boosters connected to the vessel to generate a vacuum; A condenser connected to the booster to liquefy steam; A watering pump for collecting the liquid generated in the condenser, The upper or lower portion of the booster duct constituting the booster is provided with a steam injection nozzle for injecting high-speed steam in the direction opposite to the installation direction of the vessel, At the position opposite to the installation position of the steam injection nozzle is provided with a drum that is rotated by the steam is injected, the air that strikes the outer wall of the booster duct in connection with the operation of the cylinder portion and the cylinder portion operated by the rotation of the drum Vacuum degassing equipment characterized in that the hammer portion is provided. The method according to claim 9, The cylinder portion and the cylinder rod is provided with a cylinder head; A cylinder chamber in which the cylinder head is accommodated and reciprocated; A link bar connected to the cylinder rod and connected with a connection pin, the link bar being eccentrically connected to the rotating shaft of the drum, The rotary shaft of the drum is provided with an eccentric rod connected to be eccentric at the center of rotation, the link bar is connected to the eccentric rod, when the eccentric rod is circular motion, the cylinder rod is linearly moved by the link bar Degassing plant. The method according to claim 9, A hammer chamber having an opening at one side, the opening being in close contact with an outer wall of the booster duct; A hammer accommodated in the hammer chamber and reciprocated, The cylinder portion includes a cylinder rod having a cylinder head, a cylinder chamber in which the cylinder head is accommodated and reciprocated. A third air line communicating with a lower side of the cylinder chamber and one side of the hammer chamber is provided, and the fourth air line communicating with an upper side of the cylinder chamber and the other side of the hammer chamber is provided. Gas fittings.

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