KR101040868B1 - Device for opening filler of ladle - Google Patents

Abstract

The present invention relates to a wheel lathe opening device for ladle, and is equipped with a wireless ignition means for selecting the ignition point for ignition of the expansion gas, and the gas is filled just before the opening device is embedded in the shroud nozzle, Incorrect operation time of opening device which can be caused by instability and incompleteness of the fuse and the danger that can be caused to the operator by this incorrect point are completely prevented by removal of the fuse and the safety of opening of the opening device is safe. In particular, the operating time of the opening device can be determined by the operator's arbitrary choice, and relates to a wheeler opening device of the ladle to accurately present the operating time.

 Ladle, Tendish, Shroud Nozzle, Collect Nozzle, Wheeler, Opener

Description

Ladle wheeler opening device {Device for opening filler of ladle}             

1 is a cross-sectional view schematically showing a state in which a conventional ladle wheeler opening device is mounted;

Figure 2 is an exploded perspective view schematically showing a wheeler opening device of the ladle according to a preferred embodiment of the present invention,

3 is an internal cross-sectional view showing a state in which the opening device of FIG. 2 is mounted.

<Description of Symbols for Main Parts of Drawings>

10 ... wheeler opening 12 chamber ...

14 warhead 16 binder,

18 housing, ignition means,

22.Ignition plug 24.Servo body,

26 Servo unit 28 External controller,

30 nipples 32 gas supply pipe,

40 ... shroud nozzle.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ladle wheeler opening device, and more particularly, to a wheeler opening device of a ladle in which the opening point is adjusted by an external device.

In general, molten steel is received on a ladle to inject molten steel blown from a refining furnace or steelmaking converter into a tundish, and the ladles are communicatively mounted with the tundish.

As shown in FIG. 1, the cassette 110, the collect nozzle 120, and the shroud nozzle 130 are interworked and mounted on the lower side of the ladle 100 as shown in FIG. 1.

In addition, in order to protect the top nozzle 140 and the surface pressure plate 112 of the cassette 110 from the molten steel of high temperature and high temperature received in the ladle 100, a certain amount of wheelers in the preparation operation step of the ladle 100. 102 is injected into the opening of the ladle 100 positioned on the top nozzle 140. After this, the wheeler 102 was naturally opened while being damaged by the iron positive pressure of the molten steel received on the ladle 100.

When the waiting time until the next process of the ladle 100 is long and the wheeler 102 is cured or foreign matter is mixed in the top nozzle 140, natural opening due to the positive static pressure was not achieved.

In this case, after the shroud nozzle 130 is separated from the collect nozzle 120, an oxygen torch, an oxygen lance, or the like is used to perform a forced opening operation, and molten steel is scattered and injected into the tundish.                         

At this time, the molten steel was exposed to the atmosphere, a strong oxidation occurs, the safety of the surrounding workers were exposed to danger, in particular adversely affecting the quality.

In order to solve this problem, the wheel nozzle forced opening device 200 is mounted on the collect nozzle 120 or the shroud nozzle 130, and the conventional forced opening device 200 has a conductive wire 210 installed therein. The gas is momentarily expanded by ignition at 210, and the hardened layer of wheeler 102 is opened by the rapid movement of the opening member 220 by the expansion pressure of the gas.

However, in the forced opening device 200, the conductive wire 210 is spontaneously ignited by the high temperature and the high temperature of the molten steel, so that the operator cannot know at all about the time until the forced opening device 200 is operated. In addition, the risk that the fuse 210 is ignited immediately at the time of installation was always inherent, and the work was performed by habitual judgment based on the working experience, and if the malfunction of the forced opening device 200 is performed, the operation according to the length of the fuse 210 is performed. Delay, the safety incident of the worker when the ignition of the fuse 210 is anxious.

In addition, since the conventional forced opening device 200 is stored in a state in which the expansion gas is filled in advance, there was a problem that a safety accident due to carelessness of the operator and carelessness of the operator during operation.

The present invention devised in view of the above problems, the ignition means is equipped with a ignition means for selecting the ignition point for the ignition of the expansion gas, the gas is filled because the opening device is filled just before being embedded in the shroud nozzle, Due to the safety accident and the ignition point of the fire wire which cannot be adjusted by the operator, it is completely prevented by the removal of the fire wire, and it is safe to keep the opening device before work, and the operation point of the hole opening device is selected by the operator. Its purpose is to provide a ladle wheeler factory that can be customized.

The present invention for achieving the above object, in the device for opening the wheeler cured layer formed on the ladle, in the device for opening the wheeler cured layer formed on the ladle, the opening to the wheeler cured layer A chamber embedded in the shroud nozzle disposed in connection with the ladle to face the ladle; Ignition means associated with the chamber such that the gas filled in the chamber immediately before the chamber is embedded in the shroud nozzle is instantaneously expanded at a selected time point; And a warhead for opening the hardened layer of the wheeler from the opening of the shroud nozzle and the chamber while rapidly advancing by the gas expansion pressure generated by the momentary expansion at the selected time through the ignition means through the ignition means. Opening device is made.

The ignition means includes an ignition member for ignition of the inflation gas, a transceiver configured to operate the ignition member while transmitting an ignition signal to the ignition member, and a controller for externally operating the operation of the transceiver. It is done.

The ignition means further includes a timer that is mounted on the transceiver and provides a time point for transmitting the ignition signal in the transceiver.

The wheeler opening of the ladle is a housing having a closed end portion fixed to the inner end of the ladle side of the shroud nozzle and through which the gas supply pipe passes, and a closed state fixed to one inner end of the housing and passed through the gas supply pipe. A chamber having an end portion, a chamber fixed to one inner end of the tube and having a warhead mounted in a gas tight chamber so that a gas injection nipple communicating with the ignition member and the gas supply pipe is formed through the chamber. The transceiver is further comprised.

The nipple is manufactured to have elasticity at an end portion located inside the binding pipe of the gas supply pipe, and the nipple has an opening in the chamber, a closed end is located in the binding pipe, and a gas injection hole is formed at the side of the closed end. The gas supply pipe is coupled to the closed end of the nipple so that the gas of the gas supply pipe is filled into the chamber through the nipple and the reverse flow is prevented.

One side of the housing and the binding tube is formed to communicate with a switch hole for selecting a power switch of the transceiver built in the binding tube.

Hereinafter, the wheeler opening factory of the ladle according to the present invention will be described in detail with reference to the accompanying drawings.

2 is an exploded perspective view schematically showing the wheeler opening device of the ladle according to a preferred embodiment of the present invention, Figure 3 is an internal cross-sectional view showing a state in which the opening device of Figure 2 is mounted.                     

The ladle wheeler opening device 10 according to the present invention includes a chamber 12 filled with gas, an ignition means 20 installed in association with the chamber 12, and an airtight for gas filling in the chamber 12. A warhead 14 mounted to form a space is included, and the opening device 10 is installed at the inner end of the ladle (100 in FIG. 1) side of the shroud nozzle 40.

The ignition means 20 is a means for the operator to temporarily expand the gas filled in the chamber 12 optionally, an external controller, an ignition member for igniting the gas of the chamber 12, and from the controller Receiving a signal and transmitting it to the ignition member is made to include a transmission and reception device manufactured to operate the ignition member.

As an example of the ignition means 20 in the embodiment of the present invention, the ignition member is a spark plug 22 and the transmission and reception device is a servo device 26, which is a servo body 24, and an external controller 28. I want to write

A servo device 26 including an ignition plug 22 for ignition of gas filled in the chamber 12 and a servo body 24 connected to the spark plug 22 by wire, and the servo device 26. The controller 28 is included to manipulate the operation of the outside.

In addition, the ignition means 20 further includes a timer (not shown) mounted to operate in conjunction with the servo body 24 to operate the servo device 26.

Meanwhile, the opening device 10 includes a binding tube 16 in which the chamber 12 is embedded at the end of the ladle 100 and the servo body 24 is seated, and the binding tube 16 is a ladle 100. The housing 18 is embedded in the side end is further included, the housing 18 is also mounted to the inner end of the ladle 100 side of the shroud nozzle (40).                     

The gas injection nipple 30 and the spark plug 22 of the servo device 20 penetrate through the closed bottom surface of the chamber 12, and the servo body 24 is attached to the closed bottom surface of the binding tube 16. ) Is fixed.

The upper end of the nipple 30 formed with the opening is located in the gas storage airtight space of the chamber 12, the lower end has a structure in which the gas injection hole 30a is formed on the side.

One end of the gas supply pipe 32 having elasticity is mounted on the lower end of the nipple 30 so that the gas injection hole 30a is closed in one direction, and the gas flowing in the gas supply pipe 32 is gas injection hole 30a. When the gas is introduced into the chamber 12 and stored in the chamber 12, the gas injection hole 30a is blocked by the elasticity of the gas supply pipe 32 so that the gas stored in the chamber 12 is prevented from flowing backward.

The closed bottom surface of the binding tube 16 and the closed bottom surface formed on the housing 18 are integrally or separately manufactured and mounted, and the gas supply pipe 32 is formed from the high temperature and high temperature of the molten steel contained in the ladle 100. ) To fix the position of the gas supply pipe 32 while having a heat dissipation function to temporarily protect until the operation of the opening device 10. The protection of this gas supply pipe 32 is for preventing the gas backflow of the chamber 12.

On one side of the housing 18 and the binding tube 16, switch holes 16a and 18a are provided to select ON / OFF of a power switch mounted on the servo main body 24 embedded in the binding tube 16. Is formed in communication with the housing 18, the binding tube 16, the outer housing of the chamber 12 and the servo body 24 is made of a combustible material to be incinerated by molten steel after opening, preferably It is good to be made of paper.

In the bottom of the warhead 14, it is preferable that the groove 14a is dug so that the instantaneous expansion pressure of the gas can be received to the maximum.

On the other hand, when the operation timer is mounted on the servo body 24, the operation time is set by operating the operation timer through the switch holes (16a, 18a), the opening device 10 is the shroud nozzle (40) Is mounted on.

Hereinafter, the manufacturing and operation of the ladle wheeler opening device according to the present invention will be briefly described.

The ladle wheeler opening device 10 includes a housing 18, a binding tube 16 to which the servo main body 24 is fixed, and a chamber 12 in which an airtight space for gas storage is formed while the warhead 14 is mounted. The nipple 30 and the spark plug 22 are penetrated and installed in the airtight space of the chamber 12, and the gas supply pipe 32 is disposed at the lower end of the nipple 30 of the binding pipe 16 and the housing 18. It is designed to be positioned through the closed bottom.

Immediately before the opening device 10 for opening work is mounted on the shroud nozzle 40, the external gas supply source 34 and the gas supply pipe 32 are installed in communication so that the gas is sufficiently injected into the chamber 12. The gas supply source 34 and the gas supply pipe 32 are separated. At this time, the backflow of the gas in the chamber 12 is prevented by the coupling relationship between the elastic force of the gas supply pipe 32 and the nipple 30.

Next, when the power switch is selected to operate the servo main body 24, the dog factory 10 is in the standby operation state,

When the opening device 10 in this state is mounted on the inner end of the ladle 100 side of the shroud nozzle 40 and all installations are completed, the external controller 28 is operated by an operator and the signal is transmitted to the servo body. And the received signal is transmitted to the spark plug 22 again so that the gas is momentarily expanded by the basic operation of the spark plug 22, and the warhead 14 is rapidly advanced by this gas expansion pressure. By breaking the wheeler (102 in FIG. 1) hardened layer), the opening of the ladle 100 is terminated, and the molten steel flows into the tundish.

In addition, in order to achieve gas expansion by a timer, the operator calculates an optimal delay time and inputs a time to the timer. The timer is operated precisely at this input time and the servo main body 24 interlocks with the spark plug (). Gas expands. The external controller 28 and the timer can be used simultaneously or separately.

At this time, the opening device 10 embedded in the shroud nozzle 40 is incinerated and melted by the molten steel flowing.

An optimal embodiment of the present invention described above has been disclosed. Although specific terms have been used herein, they are used only for the purpose of describing the present invention and are not intended to limit the scope of the invention as defined in the meaning or claims. In particular, the ignition means 20 is intended to collectively be a wired / wireless device which is mounted inside the opening device 10 and operable from the outside, and is not limited to the servo device 26 disclosed in the present embodiment. No wonder

According to the present invention configured as described above, the incorrect operation time of the opening device which may be caused by the instability and incompleteness of the fuse and the danger that may occur to the operator due to the incorrect timing are completely prevented by the removal of the fuse. In addition, the opening of the opening device is secured before operation, and in particular, the operating time of the opening device can be determined by the operator's arbitrary choice, so that the operation time can be accurately presented.

Claims (6)

An apparatus for opening a wheeler hardened layer formed on a ladle, A chamber embedded in the shroud nozzle disposed in connection with the ladle such that an opening is directed toward the wheeler hardened layer; Ignition means associated with the chamber such that the gas filled in the chamber immediately before the chamber is embedded in the shroud nozzle is instantaneously expanded at a selected time point; A warhead for opening the wheeler hardened layer by being separated from the opening of the shroud nozzle and the chamber while being rapidly advanced by the gas expansion pressure generated by the gas expansion at the selected time through the ignition means; A housing having one closed end fixed to the inner end of the ladle side of the shroud nozzle and passing through the gas supply pipe; A binding tube fixed to one inner end of the housing and having a closed end through which the gas supply pipe passes; And A chamber fixed to one inner end of the binding tube and having a warhead mounted thereon to form a gas tight chamber so that a gas injection nipple connected to the ignition member and the gas supply pipe is mounted therethrough; and a transceiver connected to the binding tube; Ladle wheeler opening device. The method of claim 1, The ignition means includes an ignition member for ignition of the inflation gas, a transceiver configured to operate the ignition member while transmitting an ignition signal to the ignition member, and a controller for externally operating the operation of the transceiver. Wheel opening machine, characterized in that made. The method of claim 2, The ignition means is mounted on the transceiver, the wheeler opening device characterized in that it further comprises a timer for providing a time point for transmitting the ignition signal in the transceiver. delete The method of claim 1, The nipple is manufactured to have elasticity at an end portion located inside the binding pipe of the gas supply pipe, and the nipple has an opening in the chamber, a closed end is located in the binding pipe, and a gas injection hole is formed at the side of the closed end. It is made so that, while the gas of the gas supply pipe is filled in the chamber through the nipple, the elastic end of the gas supply pipe is coupled to the closed end of the nipple so that the reverse flow is prevented. The method of claim 1, Ladle wheeler opening device, characterized in that the switch hole for selecting the power switch of the transceiver built in the tube is connected to one side of the housing and the binding tube.

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