KR20110120604A - Device for sensing lever for continuous casting mold - Google Patents

Device for sensing lever for continuous casting mold Download PDF

Info

Publication number
KR20110120604A
KR20110120604A KR1020100040083A KR20100040083A KR20110120604A KR 20110120604 A KR20110120604 A KR 20110120604A KR 1020100040083 A KR1020100040083 A KR 1020100040083A KR 20100040083 A KR20100040083 A KR 20100040083A KR 20110120604 A KR20110120604 A KR 20110120604A
Authority
KR
South Korea
Prior art keywords
core
cooling
radiation
mold
cooling passage
Prior art date
Application number
KR1020100040083A
Other languages
Korean (ko)
Inventor
전택식
Original Assignee
현대제철 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 현대제철 주식회사 filed Critical 현대제철 주식회사
Priority to KR1020100040083A priority Critical patent/KR20110120604A/en
Publication of KR20110120604A publication Critical patent/KR20110120604A/en

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/16—Controlling or regulating processes or operations
    • B22D11/18—Controlling or regulating processes or operations for pouring
    • B22D11/181—Controlling or regulating processes or operations for pouring responsive to molten metal level or slag level
    • B22D11/187—Controlling or regulating processes or operations for pouring responsive to molten metal level or slag level by using X-rays or nuclear radiation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D2/00—Arrangement of indicating or measuring devices, e.g. for temperature or viscosity of the fused mass
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D37/00—Controlling or regulating the pouring of molten metal from a casting melt-holding vessel
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
    • B22D41/14—Closures
    • B22D41/16—Closures stopper-rod type, i.e. a stopper-rod being positioned downwardly through the vessel and the metal therein, for selective registry with the pouring opening
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
    • B22D41/14—Closures
    • B22D41/22—Closures sliding-gate type, i.e. having a fixed plate and a movable plate in sliding contact with each other for selective registry of their openings
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
    • G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
    • G01F23/28—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring the variations of parameters of electromagnetic or acoustic waves applied directly to the liquid or fluent solid material
    • G01F23/284—Electromagnetic waves
    • G01F23/288—X-rays; Gamma rays or other forms of ionising radiation
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D9/00—Level control, e.g. controlling quantity of material stored in vessel

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Toxicology (AREA)
  • High Energy & Nuclear Physics (AREA)
  • General Health & Medical Sciences (AREA)
  • Thermal Sciences (AREA)
  • Fluid Mechanics (AREA)
  • Health & Medical Sciences (AREA)
  • Automation & Control Theory (AREA)
  • Continuous Casting (AREA)

Abstract

The present invention relates to a level measuring device of the playing mold. Specifically, the radiation emitter 110 is installed on one outer wall of the mold, the radiation sensor 120 is installed on the other outer wall of the mold to detect the radiation from the radiation emitter, and is played according to the sensing signal of the radiation sensor. It is provided with a level controller 130 for controlling the surface level of the mold, wherein the radiation sensor 120, the core 121 for detecting radiation and the cooling passage 140 for cooling the core is formed so that the core is formed. Including a cooling jacket 122, wherein the cooling passage 140, the outer peripheral cooling passage 141 is formed between the outer peripheral surface of the core and the inner peripheral surface of the cooling jacket, the head end surface of the core and the cooling jacket The head cooling passage 142 is formed between the bottom surface of the configuration is provided. According to this configuration, the degradation of the radiation sensor is prevented, thereby preventing the core from malfunctioning, thereby accurately measuring the level and increasing the lifespan.

Description

Level measuring device of playing mold {device for sensing lever for continuous casting mold}

The present invention relates to a level measuring device of the playing mold, and more particularly to a level measuring device for measuring the level of the playing mold surface using radiation.

In general, stabilizing the mold surface where initial solidification begins in a continuous casting process is an important factor for safe casting operation as well as for solidification shell formation and cast quality improvement. Therefore, a method for stabilizing the level of the floor is developed by installing a device that measures the level of the floor in real time and controlling the flow rate into the mold through a stopper or a sliding gate using the output signal of the device. It is used.

As a method of measuring the level of the mold surface, there is a method using radiation, a method using an eddy current sensor, a method using a capacitive sensor, and the like.

An object of the present invention is to provide an apparatus for measuring the level of a playing mold that accurately measures the level of the playing mold surface using radiation and increases the life of the radiation detector.

The level measuring device of the playing mold according to the present invention includes a radiation emitter provided on one outer wall of the mold, a radiation sensor provided on the other outer wall of the mold to detect radiation from the radiation emitter, and a sensing signal of the radiation sensor. And a level controller for controlling the level of the floor of the playing mold.

The radiation sensor includes a core for detecting radiation and a cooling jacket surrounding the core to form a cooling passage for cooling the core, wherein the cooling passage is between an outer circumferential surface of the core and an inner circumferential surface of the cooling jacket. And an outer circumferential cooling passage formed in the head, and a head cooling passage formed between the head end surface of the core and the bottom surface of the cooling jacket.

One side of the core is formed with a cap blocking the outer peripheral cooling passage.

The cooling jacket is provided with a cooling water inlet through which cooling water flows into the outer cooling passage, and a cooling water outlet through which cooling water cooling the core flows out.

According to the level measuring device of the playing mold according to the present invention, the cooling passage is formed on the outer peripheral surface of the core of the radiation sensor, while the head cooling passage is formed on the outer surface of the head end of the core to effectively cool the core, thereby preventing deterioration of the radiation sensor. It prevents the core from malfunctioning, so it can accurately measure the level and extend the service life.

1 is a schematic diagram showing a player to which the present invention is applied;
2 is a configuration diagram showing an installation state of a level measuring device of a playing mold according to the present invention;
3 is a cross-sectional view showing the radiation sensor of FIG.
4 is an exploded perspective view showing the radiation sensor of FIG.

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

1 is a schematic diagram showing a player to which the present invention is applied.

As shown in the figure, the player used for continuous casting includes a tundish 12 into which molten steel is injected from the ladle 10, a mold 14 for solidifying molten steel by receiving molten steel from the tundish 12, and In order to completely solidify the cast piece solidified from the mold 14, it consists of a cooling table 16 for injecting cooling water to the cast piece, and a pinch roll 18 for carrying out the cooled cast piece.

Fig. 2 is a configuration diagram showing an installation state of a level measuring device of a playing mold according to the present invention.

As shown, a mold case 20 is installed outside the mold 14 disposed below the tundish 12, and radiation is formed between the mold case 20 on one outer wall of the mold 14. An emitter 110 is installed, and a radiation sensor 120 is installed on the other outer wall of the mold 14 to detect the radiation from the radiation emitter 110, between the mold case 20 and the radiation sensor. A level controller 130 for controlling the level of the floor of the playing mold according to the sensing signal of 120 is electrically connected to the radiation sensor 120.

The radiation emitter 110 and the radiation sensor 120 are installed in pairs, and a plurality of pairs may be installed in preparation for a failure.

The radiation emitted from the radiation emitter 110 is gamma rays or the like caused by Co60 that does not penetrate the molten metal.

As shown in FIGS. 3 and 4, the radiation sensor 120 uses the core 121 to form a core 121 for detecting radiation and a cooling passage 140 for cooling the core 121. A cooling jacket 122 is provided.

The cooling passage 140 includes an outer circumferential cooling passage 141 formed between an outer circumferential surface of the core 121 and an inner circumferential surface of the cooling jacket 122, a head end surface of the core 121, and the cooling jacket 122. The head cooling passage 142 is formed between the bottom surface of the).

A cap portion 121a for blocking the outer circumferential cooling passage 141 is formed at one side of the core 121, and a sensing unit 121b for sensing radiation is formed at the head side of the core 121, and the cap portion 121a is formed. ) Between the sensing unit 121b and the electronic card unit 121c.

The electronic card unit 121c is a kind of control card in the form of a small PCB panel.

A connector connected to a cable (not shown) is assembled at an outer end of the cap portion 121a, and the cable is connected to the level controller 130, so that the sensing unit 121b and the electronic card unit 121c are the level controller. Is electrically connected to 130.

The cooling jacket 122 has a coolant inlet 122a through which coolant flows into the outer cooling passage 141, and a coolant outlet 122b through which coolant cooling the core 121 flows out.

The cooling water inlet 122a and the cooling water outlet 122b are provided with pipe connectors (not shown) and are connected to the cooling water supply pipe.

The cooling water inlet 122a and the cooling water outlet 122b may be formed in multiple places.

In this embodiment, the cooling water inlet 122a and the cooling water outlet 122b are provided one by one, and are formed on the right side of the core 121, that is, on the side of the electronic card 121c.

In the level measuring apparatus of the playing mold according to the present invention configured as described above, the amount of radiation emitted from the radiation emitter 110 is detected by the radiation sensor 120 to measure and control the water level in the mold 14.

That is, the radiation emitted from the radiation emitter 110 is detected by the radiation sensor 120, is converted into an electrical signal by the electronic card unit 121c is transmitted to the level controller 130 through a cable The level controller 130 receives this signal to control the level of the floor.

The coolant introduced through the coolant inlet 122a of the radiation sensor 120 cools the electronic card unit 121c and the sensing unit 121b of the core 121 and is discharged through the coolant outlet 122b.

Cooling water flowing into the cooling jacket 122 through the cooling water inlet 122a flows along the outer circumferential surface and the longitudinal direction of the core 121 along the outer circumferential cooling passage 141, and the head cooling passage 142. ) To cool the core 121.

At this time, the head side (sensing portion: 121b) of the core 121 is easily cooled through the head cooling passage 142, thereby preventing malfunction of the core 121 due to deterioration of the sensing portion 121b, thereby increasing the water level. Accurate measurement and longer lifespan.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is evident that many alternatives, modifications and variations will be apparent to those skilled in the art. The scope of the technical protection shall be determined by the technical idea of the appended claims.

12: tundish 14: mold
20: mold case 110: radiation emitter
120: radiation sensor 121: core
121a: cap portion 121b: sensing portion
121c: Electronic card portion 122: Cooling jacket
122a: cooling water inlet 122b: cooling water outlet
130: level controller 140: cooling passage
141: outer cooling passage 142: head cooling passage

Claims (3)

A radiation emitter provided on one outer wall of the mold, a radiation sensor mounted on the other outer wall of the mold to detect radiation from the radiation emitter, and a level controller for controlling the surface level of the playing mold according to a sensing signal of the radiation sensor And
The radiation sensor includes a core for detecting radiation and a cooling jacket surrounding the core to form a cooling passage for cooling the core,
The cooling passage includes an outer circumferential cooling passage formed between the outer circumferential surface of the core and the inner circumferential surface of the cooling jacket, and a head cooling passage formed between the head end surface of the core and the bottom surface of the cooling jacket. Level measuring device of the playing mold. The method according to claim 1,
One side of the core is a level measuring device of the playing mold, characterized in that the cap portion is formed to block the outer circumferential cooling passage. The method according to claim 1,
And a cooling water inlet through which coolant flows into the outer cooling passage, and a cooling water outlet through which the coolant cooling the core flows out of the cooling jacket.
KR1020100040083A 2010-04-29 2010-04-29 Device for sensing lever for continuous casting mold KR20110120604A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020100040083A KR20110120604A (en) 2010-04-29 2010-04-29 Device for sensing lever for continuous casting mold

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020100040083A KR20110120604A (en) 2010-04-29 2010-04-29 Device for sensing lever for continuous casting mold

Publications (1)

Publication Number Publication Date
KR20110120604A true KR20110120604A (en) 2011-11-04

Family

ID=45391723

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020100040083A KR20110120604A (en) 2010-04-29 2010-04-29 Device for sensing lever for continuous casting mold

Country Status (1)

Country Link
KR (1) KR20110120604A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101504919B1 (en) * 2013-07-26 2015-03-23 현대제철 주식회사 Detection device of mould level

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101504919B1 (en) * 2013-07-26 2015-03-23 현대제철 주식회사 Detection device of mould level

Similar Documents

Publication Publication Date Title
US10232433B2 (en) Casting mold and a method for detecting a temperature distribution of molten metal in a casting mold
CA2732424A1 (en) Casting level measurement in a mold by means of a fiber optic measuring method
KR20110120604A (en) Device for sensing lever for continuous casting mold
JP6194368B2 (en) Temperature detector for continuous casting molds.
JP4700466B2 (en) Continuous casting apparatus and flow velocity measuring method
KR20120098407A (en) Apparatus for detecting and displaying varying levels of a metal melt
KR101235615B1 (en) Instrument measuring a aligning state of strand roll for continuous casting, apparatus and method for measuring a aligning state of strand roll using the same
KR101981459B1 (en) Flow measuring Apparatus and Method
KR100950396B1 (en) Device for detecting the slag injection using the vibration sensor attached to long nozzle
JPH0810923A (en) Instrument for measuring molten metal surface level
ITUD20100159A1 (en) DEVICE FOR DETECTION OF LIQUID METAL LEVEL IN A CASTING EQUIPMENT AND ITS PROCEDURE
KR101504919B1 (en) Detection device of mould level
JP4745929B2 (en) Method for suppressing solidification delay in continuous casting.
JP2016215236A (en) Method for predicting breakout in continuous casting, breakout prevention method, method for measuring thickness of solidifying shell, breakout prediction device, and breakout prevention device
KR101755401B1 (en) Visualization apparatus surface level of molten steel and visualization method for surface level of molten steel using the same
US11597004B2 (en) Apparatus and method to control continuous casting, using electromagnetic brake
KR200376771Y1 (en) Apparatus for measuring surface temperature of continuous-casting roller
KR102155427B1 (en) Apparatus for detecting abnormal of mold sealing and method thereof
US12042851B2 (en) Casting method and associated device
JP2010172924A (en) Method and device for diagnosing spray nozzle
JP3513381B2 (en) Method and apparatus for detecting liquid level in mold
KR20130024196A (en) Assembly for detecting sensor of molten steal level in mold
KR20090073495A (en) Break out monitoring system and its method in continuous casting process
KR20000018464U (en) Apparatus for cooling &protection of mold level gauge using radiation
KR101239646B1 (en) Supplying control system and supplying control method of the same

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
E601 Decision to refuse application