KR20090054084A - A bucket tip induction heater - Google Patents

Abstract

The present invention relates to a bucket tip induction heater that is quickly heated by using an induction coil to restore the broken tip of the bucket through the welding operation in a short time, the working environment is improved due to local heating.

The bucket tip induction heater according to the present invention is a heater for heating a broken tip portion of the bucket, the receiving space is provided therein, the guide rod is installed vertically in the receiving space, the chamber formed with an opening on the upper surface; A bracket installed on the guide rod to move up and down; A bucket fixing jig installed on one side of the bracket and holding the bucket; The top is provided with a handle protrudes out of the chamber, the lower portion is fastened to the bracket, the screw is installed rotatably perpendicular to the chamber; An argon gas supplier installed at the other side of the bracket and supplying argon gas; An induction pipe installed in the accommodation space and having at least one discharge hole for discharging argon gas supplied from a feeder; A height adjusting means installed between the induction pipe and the argon gas supplier to adjust the height of the induction pipe and to simultaneously transmit argon gas supplied from the argon gas supplier to the induction pipe; A main body is fixedly installed on one side of the chamber, the current supply unit is installed; An induction coil positioned at an upper portion of the bucket fixing jig and bent to accommodate a damaged portion of the bucket, and both ends connected to the current supply unit; An infrared thermometer installed at one side of an upper surface of the chamber and measuring a temperature of a damaged part of the bucket; And a controller installed at one side of the chamber and controlling the argon gas supply and the current supply.

Bucket, Induction, Induction, Coil, Welding, Heating, Argon Gas, Infrared Thermometer

Description

A bucket tip induction heater

The present invention relates to a heater, and more particularly, when the tip of a bucket used in a high temperature, high stress environment of 1200 ℃ or more is damaged by heating the damaged portion quickly by using an induction coil, the welding time is improved It is related to the bucket tip induction heater to improve the working environment due to local heating.

Gas turbine is a device that generates energy by operating in high temperature, high stress environment above 1200 ℃. Under these operating conditions, a lot of damage occurs in the parts constituting the gas turbine, and particularly, a lot of damage occurs at the tip of the bucket.

Repairing the damaged parts, that is, the front end of the bucket is carried out by welding, conventionally the mechanical properties are much lower than the base material of the bucket, but weldability is restored by using a good welding material. However, this maintenance method has a lot of damage during operation because of poor mechanical properties than the base material. For this reason, before welding. The method of welding after heating the maintenance part of the bucket, that is, the damaged part, by using a quartz lamp has been developed, but this method also takes a long time to raise a certain temperature for welding to 2 to 3 hours. Therefore, the absolute time of the welding operation is required a lot of work efficiency is reduced, this long working time is also a lot of power consumption.

Therefore, the present invention has been proposed to solve the above problems according to the prior art, the object of the present invention is to shorten the working time by heating only the damaged part of the bucket, that is, the tip portion by heating to the correct temperature within a short time In addition, the present invention provides a bucket tip induction heater that can improve work efficiency and reduce power consumption.

Bucket tip induction heater according to the present invention for achieving the above object in the heater for heating the broken tip portion of the bucket,

A chamber having an accommodating space therein, the guide rod being vertically installed in the accommodating space, and having an opening formed at an upper surface thereof; A bracket installed on the guide rod to move up and down; A bucket fixing jig installed on one side of the bracket and holding the bucket; The top is provided with a handle protrudes out of the chamber, the lower portion is fastened to the bracket, the screw is installed rotatably perpendicular to the chamber; An argon gas supplier installed at the other side of the bracket and supplying argon gas; An induction pipe installed in the accommodation space and having at least one discharge hole for discharging argon gas supplied from a feeder; A height adjusting means installed between the induction pipe and the argon gas supplier to adjust the height of the induction pipe and to simultaneously send argon gas supplied from the argon gas supplier to the induction pipe; A main body is fixedly installed on one side of the chamber, the current supply unit is installed; An induction coil positioned at an upper portion of the bucket fixing jig and bent to accommodate a damaged portion of the bucket, and both ends connected to the current supply unit; An infrared thermometer installed at one side of an upper surface of the chamber and measuring a temperature of a damaged part of the bucket; And a controller installed at one side of the chamber and controlling the argon gas supply and the current supply.

The present invention is capable of heating the damaged tip portion of the bucket in a short time by using an induction coil, and also has the effect of improving the working environment by local heating.

In addition, due to the fast heating, the maintenance time of the bucket through the welding operation is also shortened, thereby reducing the power consumption.

In addition, the height of the bucket is adjustable so that the damaged tip portion can be easily located in the induction coil regardless of the size of the damage.

Hereinafter, with reference to the accompanying drawings, a bucket tip induction heater according to the present invention.

1 is a front sectional view of a bucket tip induction heater according to the present invention, Figure 2 is a side sectional view of a bucket tip induction heater according to the present invention, Figure 3 is a plan sectional view of a bucket tip induction heater according to the present invention 4 is a front view of the bucket tip induction heater according to the present invention, Figure 5 is an enlarged view showing the operating state of the toggle clamp, Figure 6 is a view showing a state in which the bracket is elevated by the rotation of the screw, 7 is an enlarged view of the height adjustment means, Figure 8 is a view showing a state of use of the height adjustment means, Figure 9 is an open view of the controller, Figures 10 to 11 is a partition on the bucket tip induction heater according to the present invention This is a view showing a further provided state, Figure 12 is a view showing a state which is further provided with an auxiliary argon feeder and a supply hose to the bucket tip induction heater according to the present invention.

1 to 3, the bucket tip induction heater according to the present invention is large, the chamber 10, the bracket 20, the bucket fixing jig 30, the screw 40, the feeder 50, Induction pipe 60, height adjustment means 70, current supply 80, induction coil 82, infrared thermometer 84 and the controller 90.

The chamber 10 has an accommodating space 11 therein, a guide rod 12 is vertically installed in the accommodating space 11, and an opening 13 is formed on an upper surface thereof.

At least one guide rod 12 is preferably formed.

In addition, as shown in FIG. 4, the door 14 is hingedly coupled to the front surface of the chamber 10 so that the bucket B can be easily inserted into or removed from the accommodation space 11.

Meanwhile, when welding the bucket B accommodated in the accommodation space 11 of the chamber 10, the transparent window 15 is further provided inside the door 14 so that an operator can see the working part. good.

The bracket 20 is installed to be lowered to the guide rod 12.

The bracket 20 is bent to have a horizontal portion 21 and a vertical portion 22, the through hole 23 is provided with a guide rod 12 is penetrated on one surface of the vertical portion (22). Protruding protrusion 24 is provided, and a block 26 formed with a screw hole 25 fastened to the screw 40 on one side of the vertical portion 22 is formed.

The bucket fixing jig 30 is installed on one side of the horizontal portion 21 of the bracket 20, and grips the bucket (B) to be worked.

The bucket fixing jig 30 has a fixed gripping portion 31 fixed to one side of the horizontal portion 21 of the bracket 20, and the fixed gripping portion 31 and predetermined so as to grip the bucket (B). It is composed of a toggle clamp 33 which is fixedly installed at the distal end of the transfer gripping portion 32 and the horizontal portion 21 of the bracket 20 to secure the transfer gripping portion (32).

Here, the lower portion of the bucket (B) is made of a wave form so that the opposite surface of the fixed gripping portion 31 and the transfer gripping portion 32 is also made of a wave.

As shown in FIG. 5, the toggle clamp 33 has detents 33c on both hinge shafts 33b of the base 33a fixed to the front end of the horizontal portion 21 of the bracket 20. And the operating piece 33d are rotatably installed, respectively, and the detent 33c and the operating piece 33d are connected by a link 33e so that the detent 33c is rotated when the operating piece 33d is rotated. It is also rotated to fix or release the conveying grip 32.

The toggle clamp 33 is a commonly used article and will not be described in detail.

The screw 40 is rotatably installed perpendicular to the chamber 10, and an upper end thereof protrudes out of the chamber 10, and a handle 41 is provided at an upper end thereof, and a lower part of the bracket 20 is provided. 6, the bracket 25 is rotated by the rotation operation of the handle 41 and thus the bracket 25 is fastened to the guide rod 12, as shown in FIG. 6. It does not rotate but raises or lowers.

The argon gas supplier 50 is fixed to the bent portion of the bracket 20 and supplies argon gas to form an inert atmosphere during welding.

The induction pipe (60) is installed in the accommodation space (11), and formed to be bent in an inverted "U" shape to accommodate the bucket (B) fixed by the bucket fixing jig 30, argon gas supply ( At least one discharge hole 61 for discharging argon gas supplied from 50 is formed.

The discharge hole 61 is preferably formed with a plurality of spaced intervals inside the induction pipe 60 formed bent.

The height adjusting means 70 is installed between the induction pipe 60 and the argon gas supplier 50 to adjust the height of the induction pipe 60 and at the same time the argon gas supplied from the argon gas supplier 50 To the induction pipe (60).

As such, the height adjusting means 70 is formed to protrude at least one perpendicular to the lower portion of the induction pipe 60, as shown in Figures 7 to 8, the first communication with the induction pipe 60 The flow path 71 is provided therein, the first pipe 73 is provided with a plurality of first fastening holes 72 at regular intervals along the longitudinal direction, and the lower end is connected to the argon gas supplier 50 The upper side part is installed to be inserted into the first flow path 71, the second flow path 74 through which argon gas passes is provided, and a plurality of second fastening holes 75 at regular intervals along the longitudinal direction. ) Is provided with a second tube 76 and the pin 77 is inserted into the first fastening hole 72 and the second fastening hole 75 to adjust the height of the first pipe (73).

The current supplier 80 is fixedly installed at one side of the chamber 10, and supplies current to the induction coil 82 to be described later by the control of the controller 90 to be described later.

The induction coil 82 is formed at the upper portion of the bucket fixing jig 30 and bent to receive the broken tip portion T of the bucket B held by the bucket fixing jig 30. Both ends are connected to the current supply unit 80 to generate a magnetic force line by driving the current supply unit 80, that is, supplying current to heat the bucket B as a conductor.

The induction coil 82 is a general article, and detailed description thereof will be omitted.

The infrared thermometer 84 is installed on one side of the upper surface of the chamber 10 by using the support 85, and measures the temperature of the broken tip portion (T) of the bucket (B).

The infrared thermometer 84 measures the temperature of the damaged portion of the bucket B, ie, the broken tip portion T, heated by the induction coil 82 through the opening 13 of the chamber 10. Display to the operator.

The infrared thermometer (84) is also a commonly used article, a detailed description thereof will be omitted.

The controller 90 is fixedly installed at one side of the outer surface of the chamber 10, and controls the argon gas supplier 50 and the current supplier 80.

As shown in FIGS. 3 and 9, the controller 90 includes a first start button 91 for driving the argon gas supplier 50 and a second start button 92 for driving the current supplier 80. And a first end button 93 for stopping driving of the argon gas supplier 50, a second end button 94 for stopping driving of the current supplier 80, and holding the current supplier 80. The argon gas supplier 50 and the current supplier 80 are driven in accordance with the operation of the hold button 95 and the first and second start buttons 91 and 92 and the first and second end buttons 93 and 94. Or a control unit 96 for controlling the current supply unit 80 so as to maintain or maintain the temperature of the current state when the hold button 95 is operated.

Such a controller (90) controls the argon gas supply unit (50) and the current supply unit (80) by wire or wirelessly, and is made of a general configuration and description of the case is omitted.

And, as shown in Figure 10 to 11, it is preferable that the partition wall 90 is further provided in the receiving space 11 of the chamber 10, such a partition wall 90 and the front of the chamber 10 The corresponding part is formed in an inverted " U " shape with an opening, and is provided with a tapered surface 91 inclined inward at the upper end.

Here, when the taper surface 91 and the screw 40 or guide rod 12 interfere with each other, a hole 92 through which the screw 40 and the guide rod 12 penetrate the taper surface 91 is further provided. Can be.

In addition, as shown in FIG. 12 to improve the inert atmosphere of the chamber within a short time, the auxiliary argon gas supplier 100, which is located outside the chamber 10 and supplies argon gas, once Is installed in communication with the receiving space 11 of the chamber 10, the other end may be further provided with a supply hose 110 connected to the auxiliary argon gas supplier (100).

One end of the supply hose 110 is connected to the auxiliary argon gas supplier 100, and the other side is divided into a first supply line 111 and a second supply line 112 to accommodate the first supply line 111. The chamber 10 may be installed to communicate with the space 11, and the second supply line 112 may be connected to the induction pipe 60.

Referring to the state of use of the bucket tip induction heater according to the present invention configured as described above are as follows.

First, the door 14 of the chamber 10 is opened, and then the bucket B to be maintained is positioned between the fixed gripping portion 31 and the transfer gripping portion 32 of the bucket fixing jig 30.

Then, the operating piece 33d of the toggle clamp 33 is rotated.

Then, the detent 33c interlocking with the operation piece 33d is rotated by the link 33e to push the transfer grip 32 to fix the bucket B.

Then, the discharge hole 61 of the induction pipe 60 by using the height adjusting means 70 is located in the broken tip portion (T) of the bucket (B).

That is, after the pin 77 is removed, the first tube 73 is moved, and the pins 77 are fastened to the first and second fastening holes 72 and 75 of the first tube 73 and the second tube 76. ) To fix the position of the first pipe (73).

Here, the height adjusting means 70 serves to adjust the height of the induction pipe 60 according to the size of the break of the tip portion (T) of the bucket (B).

Subsequently, when the screw 40 is rotated by turning the handle 41, the bracket 20 engaged with the screw 40 is raised or lowered without being rotated by the guide rod 12.

At this time, the screw 40 is rotated forward to raise the bracket 20.

Then, the bucket B held by the bucket fixing jig 30 installed in the bracket 20 is also raised, and the bracket (B) is damaged so that the damaged tip portion of the bucket B is received in the induction coil 82. 20) increase.

Then, the first start button 91 of the controller 90 is pressed to drive the argon gas supplier 50.

Then, the argon gas supplied by the argon gas supplier 50 is guided through the second flow hole 75 of the second pipe 76 and the first flow hole 72 of the first pipe 73 sequentially. The supplied argon gas is discharged into the accommodation space 11 through the discharge hole 61 of the induction pipe 60 to improve the inert atmosphere of the accommodation space 11.

In this case, it is important to improve the inert atmosphere of the working position by welding and restoring the tip portion of the broken bucket (B). It was concentrated.

Then, the second start button 92 is pressed to drive the current supply 80 so that the induction coil 82 generates magnetic lines of force.

At this time, the bucket B which is a conductor is heated by the magnetic force line.

After a certain time, the operator presses the hold button 95 when the temperature is suitable to work by looking at the temperature measured by the infrared thermometer 84.

Then, the controller 96 recognizes the operation of the button 95 to control the current supply 80 to maintain a constant temperature.

Then, the damaged tip portion of the bucket B is restored using an electrode (not shown) and a welding machine (not shown) made of the same material as the bucket through the opening 13 of the chamber 10.

At this time, the process proceeds while visually confirming the working state through the transparent window 15 formed in the opening 13 and the door 14 of the chamber 10.

After a predetermined time elapses, when the restoration operation is completed, the first end button 93 and the second end button 94 are operated to end the driving of the argon gas supplier 50 and the current supply 80.

Then, the door 14 is opened to cool the completed bucket B, and the screw 40 is rotated in reverse to lower the bracket 20, and the toggle clamp 33 is operated to allow the bucket B to operate. Release the gripping of the bucket (B) is taken out of the receiving space (11).

1 is a front sectional view of a bucket tip induction heater according to the present invention,

Figure 2 is a side cross-sectional view of the bucket tip induction heater according to the present invention,

3 is a plan sectional view of the bucket tip induction heater according to the present invention,

4 is a front view of the bucket tip induction heater according to the present invention,

5 is an enlarged view showing an operating state of a toggle clamp,

6 is a view showing a state in which the bracket is elevated by the rotation of the screw,

7 is an enlarged view of the height adjusting means,

8 is a view showing a state of use of the height adjustment means,

9 is a schematic view of the controller,

10 to 11 is a view showing a state that the partition wall is further provided to the bucket tip induction heater according to the present invention,

12 is a view showing a state in which the bucket tip induction heater according to the present invention is further provided with an auxiliary argon feeder and a supply hose.

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

10: chamber, 11: receiving space, 12: guide rod, 13: opening, 20: bracket, 30: bucket fixing jig, 31: fixed gripping portion, 32: conveying gripping portion, 33: toggle clamp, 40: screw, 41 : Handle, 50: argon gas supply, 60: induction pipe, 61: exhaust hole, 70: height adjusting means, 80: current supply, 82: induction coil, 84: infrared thermometer, 90: controller, 90: bulkhead, 100: Auxiliary argon gas feeder, 110: supply hose, B: bucket

Claims (12)

In the heater that heats the broken tip of the bucket, A chamber having an accommodating space therein, the guide rod being vertically installed in the accommodating space, and having an opening formed at an upper surface thereof; A bracket installed on the guide rod to move up and down; A bucket fixing jig installed on one side of the bracket and holding the bucket; The top is provided with a handle protrudes out of the chamber, the lower portion is fastened to the bracket, the screw is installed rotatably perpendicular to the chamber; An argon gas supplier installed at the other side of the bracket and supplying argon gas; An induction pipe installed in the accommodation space and having at least one discharge hole for discharging argon gas supplied from a feeder; A height adjusting means installed between the induction pipe and the argon gas supplier to adjust the height of the induction pipe and to simultaneously transmit argon gas supplied from the argon gas supplier to the induction pipe; A main body is fixedly installed on one side of the chamber, the current supply unit is installed; An induction coil positioned at an upper portion of the bucket fixing jig and bent to accommodate a damaged portion of the bucket, and both ends connected to the current supply unit; An infrared thermometer installed at one side of an upper surface of the chamber and measuring a temperature of a damaged part of the bucket; And A bucket tip induction heater, comprising: a controller installed at one side of the chamber, the controller for controlling the argon gas supply and the current supply. The method according to claim 1, The bracket is It is formed to be bent to have a horizontal portion and a vertical portion, the projection is provided with a through hole through which the guide rod is penetrated on one surface of the vertical portion, characterized in that the block formed with a screw hole is fastened to the screw on one side of the vertical portion Bucket tip induction heater. The method according to claim 1, The bucket fixing jig A fixed gripping part fixedly installed at one side of the bracket; A transfer gripping portion positioned at a predetermined distance from the fixed gripping portion so as to grip the bucket; And Bucket tip induction heater, characterized in that consisting of; toggle clamp is fixed to one side of the bracket for fixing the transfer gripping portion. The method according to claim 1, The flow pipe is bent in the form of a reverse "U" to accommodate the bucket, bucket tip induction heater, characterized in that a plurality of discharge holes are formed at a predetermined interval inside. The method according to claim 1, The height adjusting means At least one or more installed in the lower portion of the induction pipe, the first flow passage communicating with the induction pipe is provided therein, the first pipe provided with a plurality of first fastening holes at regular intervals along the longitudinal direction; A lower end is connected to the argon gas supply, and an upper side is installed to be inserted into the first euro hole, and a second euro hole through which argon gas passes is provided therein, and a plurality of second fastening holes are provided at predetermined intervals along the length direction. Second tube; And Bucket tip induction heater, characterized in that consisting of; pins are inserted into the first fastening hole and the second fastening hole to adjust the height of the first pipe. The method according to claim 1, The controller First and second start buttons for driving the argon gas supply and the current supply; First and second end buttons for stopping the argon gas supply and the current supply; A hold button for holding the current supply; And A control unit which drives or stops the argon supply and the current supply according to the operation of the first and second start buttons and the first and second end buttons, and controls the current supply so that the temperature of the current state is maintained when the hold button is operated; Bucket tip induction heater, characterized in that made. The method according to claim 1, Bucket tip induction heater, characterized in that the partition is further provided in the receiving space of the chamber. The method according to claim 1, The barrier rib has an inverted " U " shape having a portion corresponding to the front side of the chamber, and has a tapered surface inclined inwardly at an upper end thereof. The method according to claim 1, Bucket tip induction heater characterized in that the door is hinged rotatably coupled to the front portion of the chamber. The method according to claim 9, Bucket tip induction heater, characterized in that the transparent window is further provided on the inside of the door. The method according to claim 1, It is located outside the chamber, the auxiliary argon gas supply for supplying argon gas, one end is installed in communication with the receiving space of the chamber, the other end is further provided with a supply hose connected to the auxiliary argon gas supply Bucket tip induction heater. The method according to claim 11, The supply hose is first connected to the auxiliary argon gas supply and the other side is divided into first and second supply lines so that the first supply line is installed in the chamber in communication with the receiving space, the second supply line is an induction pipe Bucket tip induction heater, characterized in that connected to.

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