KR101672315B1 - Wall-Blower Control System For Boiler - Google Patents

Wall-Blower Control System For Boiler Download PDF

Info

Publication number
KR101672315B1
KR101672315B1 KR1020150157854A KR20150157854A KR101672315B1 KR 101672315 B1 KR101672315 B1 KR 101672315B1 KR 1020150157854 A KR1020150157854 A KR 1020150157854A KR 20150157854 A KR20150157854 A KR 20150157854A KR 101672315 B1 KR101672315 B1 KR 101672315B1
Authority
KR
South Korea
Prior art keywords
boiler
lance tube
wall
steam
region
Prior art date
Application number
KR1020150157854A
Other languages
Korean (ko)
Inventor
강신섭
박상영
이종우
김현철
Original Assignee
주식회사 아이스기술
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 주식회사 아이스기술 filed Critical 주식회사 아이스기술
Priority to KR1020150157854A priority Critical patent/KR101672315B1/en
Application granted granted Critical
Publication of KR101672315B1 publication Critical patent/KR101672315B1/en

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B37/00—Component parts or details of steam boilers
    • F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
    • F22B37/56—Boiler cleaning control devices, e.g. for ascertaining proper duration of boiler blow-down
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B37/00—Component parts or details of steam boilers
    • F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
    • F22B37/48—Devices for removing water, salt, or sludge from boilers; Arrangements of cleaning apparatus in boilers; Combinations thereof with boilers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B37/00—Component parts or details of steam boilers
    • F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
    • F22B37/48—Devices for removing water, salt, or sludge from boilers; Arrangements of cleaning apparatus in boilers; Combinations thereof with boilers
    • F22B37/52—Washing-out devices

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Incineration Of Waste (AREA)

Abstract

The present invention provides a wall-blower control system for a boiler including: a lance tube receiving steam from a steam supply unit supplying steam by opening and closing a valve, receiving torque by being joined to a driving unit generating torque by receiving external power, and inputted inside the boiler by being transferred by the torque of the driving unit; a first limit switch arranged in a lance tube transferring passage and transmitting switching signals for injecting the steam to a first section of an inner wall of the boiler in the case of switching-on operation due to the transfer of the lance tube; a second limit switch arranged in a rear side of the first limit switch in the lance tube transferring passage and transmitting switching signals for injecting the steam to a second section of the inner wall of the boiler in the case of the switching-on operation due to the transfer of the lance tube; and a control unit outputting control signals to supply the steam to a nozzle unit by opening the valve of the steam supply unit when receiving the switching signals from the first limit switch or the second limit switch. According to the present invention, a cleaning effect is increased by separately injecting the steam to the first section and the second section of the inner wall of the boiler.

Description

Wall-Blower Control System For Boiler

The present invention relates to a boiler wall blower control system, and more particularly, to a boiler wall blower control system that can more effectively clean the inner wall of a combustion zone of a thermal power plant boiler.

Generally, a large-sized boiler for thermal power generation using coal as a fuel generates electric energy by transferring high-temperature high-pressure steam energy generated by burning fuel in a boiler to a turbine.

In this process, ash is generated as the fuel is burned in the boiler furnace, the ash is melted by the heat of high temperature, and the molten iron is cooled and adsorbed to the inner wall of the water tube of the boiler or the boiler tube And accumulated in soot, and the accumulation grows into a few meters of clinker.

If such a Ash is attached to the tube, it will interfere with heating the tube, reducing the efficiency of power production, and if it can not be removed properly, the grown clinker will fall down and break the boiler.

Therefore, a soot blower is installed in the boiler to remove accumulation of the inside of the boiler. The wall blower is a device for spraying the accumulated material on the wall by spraying with high-temperature and high-pressure steam.

As shown in FIG. 1, the conventional wall blower is configured such that the nozzle unit 10 of the lance tube is drawn into the boiler at a certain depth and has a predetermined radius, while the lance tube is rotated 360 degrees by the rotation and transfer of the driving unit, (Fluid) is injected to the boiler, and then the steam is discharged backward from the boiler periodically.

At this time, since the nozzle portion of the wall blower has a predetermined length L to be introduced into the boiler, when the spraying radius R1 of the steam sprayed to the furnace wall is constant and co-injection is performed using a plurality of wall blurs, As shown in FIG. 2, there is a problem that deposits are not removed in the shadow interval (b) between the steam injection radii.

Korea Registered patent: 10 - 1047137 (Notification date 07. 07. 07)

Korea Registered Patent: 20 - 0437219 (Published on Nov. 16, 2007)

SUMMARY OF THE INVENTION The present invention has been made to solve the conventional problems,

It is an object of the present invention to control the injection radius of a nozzle that is introduced into a boiler to spray steam to make differential injection of a first region injection and a second region injection on the inner wall of a boiler, The boiler wall blower control system can efficiently remove the deposit by the common jetting period generated when the second region is jetted.

According to an aspect of the present invention, there is provided a boiler wall blower control system including a steam supply unit for supplying steam to a steam supply unit, a steam supply unit for supplying steam to the steam supply unit, A lance tube which is received by a rotational force transmitted to the inside of the boiler by a rotational force of the driving unit; A first limit switch disposed in a transfer path of the lance tube for transmitting a switching signal for steam injection in a first area on the inner wall of the boiler during a switching ON operation according to the transfer of the lance tube; A second limit switch disposed behind the first limit switch on a transfer path of the lance tube and transmitting a switching signal for injecting a second area of the inner wall of the boiler during a switching on operation according to the transfer of the lance tube; And a control unit for opening the valve of the steam supply unit when the switching signal is received from the first limit switch or the second limit switch and outputting a control signal to supply steam to the nozzle unit.

When the control unit receives the switching signal from the first limit switch, the nozzle unit of the lance tube controls the first region of the inner wall of the boiler to inject steam for a predetermined time, and when the injection is finished, And a reverse driving signal is applied to the driving unit so as to be drawn out from the inside.

When the control unit receives the switching signal from the second limit switch, the nozzle unit of the lance tube controls the second area of the inner wall of the boiler to spray steam for a predetermined time, And a reverse driving signal is applied to the driving unit so as to be drawn out from the inside.

In addition, the control unit causes the nozzle portion of the lance tube to perform steam injection for a preset time in the first area injection range of the inner wall of the boiler, and then, when the injection is finished, the nozzle portion of the lance tube moves to the second region injection range of the inner wall of the boiler And controls operations of the driving unit and the first and second limit switches so that steam is injected in the second area for a predetermined time.

In addition, when the control unit receives the switching signal from the second limit switch, the nozzle unit of the lance tube is set in the first region and the second region of the inner wall of the boiler while moving in the first region and the second region injection range of the inner wall of the boiler So that steam is sprayed for a predetermined period of time.

When the control unit receives the switching signal from the first limit switch, the control unit stops the transfer of the lance tube so that the nozzle of the lance tube is positioned within the first region injection range of the inner wall of the boiler, So that steam is sprayed for a predetermined period of time.

When the control unit receives the switching signal from the second limit switch, the control unit stops the transfer of the lance tube so that the nozzle portion of the lance tube is positioned within the second region injection range of the inner wall of the boiler, So that steam is sprayed for a predetermined period of time.

The control unit selectively receives or sequentially receives switching signals of the first and second limit switches according to an external setting signal.

The control unit receives the information of the attachment from the monitoring device for monitoring the state of the inner wall of the boiler and selectively receives or sequentially receives the switching signals of the first and second limit switches based on the information. do.

The first region of the inner wall of the boiler is a peripheral region of the lance tube drawn into the inner wall of the boiler, and the second region of the inner wall of the boiler is an outer region of the first region.

According to the embodiment of the present invention, the first limit switch and the second limit switch are provided on the movement path of the lance tube to adjust the ejection radius of the nozzle according to the pull-in depth of the nozzle drawn into the boiler, By performing the differential injection of the injection and the second region injection, it is possible to efficiently remove the deposit remaining in the shadow region during the first region injection by the common injection region generated in the second region injection.

In addition, the cleaning effect is enhanced through the differential injection of the first region injection and the second region injection on the inner wall of the boiler, and the power generation efficiency is increased.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a conceptual diagram showing a steam injection radius of a nozzle portion for spraying steam on a boiler inner wall in a conventional boiler wall blower.
FIG. 2 is a conceptual diagram showing a state in which adherents are not removed from a shadow interval between steam injection radii when a plurality of boiler wall blowers are used for co-injection.
3 is a block diagram illustrating an overall configuration of a boiler wall blower control system according to an embodiment of the present invention;
4 to 6 are operation diagrams illustrating a mechanical configuration and operation of a boiler wall blower control system according to an embodiment of the present invention;
7 is a conceptual diagram showing a steam injection radius of a nozzle portion for spraying steam in a first region and a second region of an inner wall of a boiler in a boiler wall blower according to an embodiment of the present invention.
FIGS. 8A to 8C are diagrams for explaining a case where a plurality of boiler wall blowers according to an embodiment of the present invention are used for co-injection, FIG. 8 is a conceptual diagram showing that the adherent remaining in the shadow zone is removed by the common jetting section generated in the second region jetting.

These and other objects, features and other advantages of the present invention will become more apparent by describing in detail preferred embodiments of the present invention with reference to the accompanying drawings. Hereinafter, a boiler wall blower control system according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings. For purposes of this specification, like reference numerals in the drawings denote like elements unless otherwise indicated.

FIG. 3 is a block diagram illustrating an overall configuration of a boiler wall blower control system according to an embodiment of the present invention, FIGS. 4 to 6 illustrate a mechanical configuration of a boiler wall blower control system according to an embodiment of the present invention, 4 shows a state before the nozzle portion of the lance tube is drawn into the boiler, and FIG. 5 shows a state in which the nozzle portion of the lance tube is drawn into the boiler according to the feeding of the driving portion, 1 shows a state in which the nozzle portion of the lance tube injects steam into the first region of the inner wall of the boiler by the switching ON operation of the first limit switch, and FIG. 6 shows a state in which the second limit switch is turned on FIG. 7 is a view showing a state in which the nozzle portion of the lance tube injects steam into the second region of the inner wall of the boiler in operation; and FIG. 7 shows the state in which steam is supplied to the first region and the second region of the inner wall of the boiler Is a graph illustrating the steam spraying unit radial nozzle for use conceptual view.

3 to 7, a boiler wall blower control system according to an embodiment of the present invention receives steam from a steam supply unit 200 that opens and closes a valve to supply steam, receives power from an external source, A lance tube 300 which is coupled with the driving part 100 and is received by the rotational force of the driving part 100 and is drawn into the boiler, a lance tube 300 which is disposed in a conveyance path of the lance tube, A first limit switch (400) for transmitting a switching signal for steam injection of the first area on the inner wall of the boiler during an ON operation, a second limit switch (400) disposed behind the first limit switch on the transfer path of the lance tube, A second limit switch 500 for transmitting a switching signal for injecting a second region of the inner wall of the boiler during a switching ON operation, And a control unit 600 for releasing the valve of the steam supply unit when the switching signal is received from the second limit switch and outputting a control signal to supply steam to the nozzle unit of the lance tube.

4 to 6, the lance tube 300 is provided with a nozzle unit 310 for spraying steam at one end, and a spiral groove 320 is formed along the longitudinal direction on the outer circumferential surface of the nozzle unit 310 And a flange 330 having a diameter wider than the diameter of the lance tube 300 is coupled to the other end. A sensing medium 340 is provided on the front surface of the flange 330 to contact the first and second limit switches 400 and 500 when the lance tube 300 is transported.

The lance tube 300 is coupled to the outside of the feed tube 210 connected to the steam supply unit 200 to be rotatable and transferable. That is, the feed tube 210 is inserted into the lance tube 300 so that the steam supplied from the steam supply unit 200 can be safely guided to the lance tube 300 without being leaked when the lance tube 300 is rotated and transferred And connects the steam supply unit 200 and the lance tube 300.

The driving unit 100 includes a motor 110 that receives power from the outside to generate a rotating force and a power transmission unit 120 that transmits the rotational force of the motor 110 to the lance tube 300. Here, the power transmitting portion 120 is composed of reduction gears that decelerate and transmit the rotational force of the motor.

The worm gear 121 for deceleration is coupled to the driving shaft of the motor 110 and the shaft 122 is coupled to the center of the worm wheel of the worm gear 121 in a direction parallel to the lance tube 300. A first spur gear 123 is provided at the distal end of the shaft 122. A second spur gear 124 for deceleration is coupled to the first spur gear 123, A hollow flange 125 is coupled at the center. A spiral (not shown) is formed on the inner circumferential surface of the hollow flange portion 125 to engage with the spiral groove 320 formed on the outer circumferential surface of the lance tube 300. The lance tube 300 penetrates the center of the flange portion 125 and is coupled to the helical groove 320 formed on the outer circumferential surface of the lance tube 300 and the helical groove formed on the inner circumferential surface of the flange.

Accordingly, when the second spur gear 124 rotates, the lance tube 300 receives the rotational force of the second spur gear 124 and is horizontally moved simultaneously with the rotation.

Here, it is assumed that the lance tube 300 is transported in the direction in which the lance tube 300 is drawn into the boiler, and that the lance tube 300 is transported in the direction in which the lance tube 300 is drawn out from the inside of the boiler.

The first limit switch 400 and the second limit switch 500 are provided on the horizontal movement path of the lance tube 300.

The first and second limit switches 400 and 500 provided on the conveyance path of the lance tube 300 are in contact with the sensing medium 340 provided on the flange 330 of the lance tube 300, The first limit switch 400 will be described and the second limit switch 500 will be described later.

The first region R1 of the inner wall of the boiler is the peripheral region of the lance tube 300 drawn into the inner wall of the boiler and the second region R2 of the inner wall of the boiler means the outer region of the first region R1.

The first limit switch 400 moves the lance tube 300 forward of the lance tube 300 so that the nozzle 310 of the lance tube is drawn into the boiler and the first region R1 of the inner wall of the boiler, (L) of the radius.

The second limit switch 500 is disposed at a position spaced apart from the first limit switch 400 by a predetermined distance on the movement path of the lance tube 300. Since the first limit switch 400 is first brought into contact with the flange sensing medium 340 at the time of advancing the lance tube 300 and the second limit switch 500 is to be contacted later, Can be described as being provided at the rear of the first limit switch 400.

The first limit switch 400 is turned on by contacting the flange 330 of the lance tube with the sensing medium 340 when the lance tube 300 is advanced, ON) operation to the control unit 600. The control unit 600 receives the switching signal from the control unit 600, At this time, the nozzle unit 310 of the lance tube is drawn into the boiler and is positioned at the starting point of the range L having the first region injection radius of the inner wall of the boiler.

The control unit 600 receiving the switching signal from the first limit switch 400 outputs a control signal for opening the valve of the steam supply unit 200 so that the steam is supplied to the nozzle unit 310 of the lance tube.

The steam supply unit 200 receiving the control signal opens the valve to supply steam, and the steam supplied to the nozzle unit 310 of the lance tube is injected into the first region R1 of the inner wall of the boiler.

At this time, the control unit 600 controls the valve of the steam supply unit 200 so that the steam injected into the first region R1 of the inner wall of the boiler is injected for a preset time, and when the injection is finished, the nozzle unit 310 To be drawn out from the inside of the boiler.

The driving unit 100 receiving the reverse driving signal from the control unit 600 reversely drives the lancet tube 300 backward.

The second limit switch 500 disposed on the rear side of the first limit switch 400 on the conveyance path of the lance tube 300 moves the sensing medium 340 provided on the flange 330 according to the conveyance of the lance tube 300, And transmits a switching signal for the steam injection to the controller 600 in the switching on operation.

At this time, the control unit 600 receives only the switching signal of the second limit switch 500 without receiving the switching signal of the first limit switch 400, which is first brought into contact with the lance tube 300, The nozzle unit 310 is positioned in the range [alpha] having the second region injection radius of the inner wall of the boiler.

The control unit 600 receiving the switching signal from the second limit switch 500 outputs a control signal for opening the valve of the steam supply unit 200 to supply steam to the nozzle unit 310 of the lance tube.

The steam supply unit 200 receives the control signal and opens the valve to supply steam. The steam supplied to the nozzle unit 310 of the lance tube is injected into the second region R2 of the inner wall of the boiler.

At this time, the control unit 600 controls the valve of the steam supply unit 200 so that the steam injected into the second region R2 of the inner wall of the boiler is injected for a preset time, and when the injection is finished, the nozzle unit 310 To be drawn out from the inside of the boiler. The driving unit 100 receiving the reverse driving signal from the control unit 600 reversely drives the lancet tube 300 backward.

The control unit 600 controls the nozzle unit 310 of the lance tube so that the nozzle unit 310 of the lance tube performs steam injection for a preset time in the first region injection range L of the inner wall of the boiler, Of the first and second limit switches 400 and 500 so that steam is injected into the second region R2 of the inner wall of the boiler for a predetermined time after the second region R2 of the inner wall of the boiler is moved to the second region injection range [ It is also possible to control the operation.

More specifically, the nozzle unit 310 of the lance tube is injected with steam for a predetermined time in the first area injection range L of the inner wall of the boiler by the switching ON operation of the first limit switch 400 The lancet tube 300 is moved forward, not by moving the lancet tube 300 backward by applying an inverse driving signal to the driving unit 100.

The nozzle unit 310 of the lance tube is moved to the second region injection range α of the inner wall of the boiler according to the forward movement of the lance tube 300 and the detection region 340 of the lance tube flange 330 And the second limit switch 500, the second limit switch 500 is turned on.

The control unit 600 receiving the switching signal from the second limit switch 500 opens the valve of the steam supply unit 200 to supply the steam to the nozzle unit 310 of the lance tube, ) So that the steam injection is performed for a predetermined time.

When the second limit switch 500 is switched on, the nozzle unit 310 of the lance tube moves in the first and second regions of the inner wall of the boiler, It is also possible to control the spraying of the steam to the region R1 and the second region R2.

When the control unit 600 receives the switching signal from the first limit switch 400, the control unit 600 stops the feeding of the lance tube 300 so that the nozzle unit 310 of the lance tube is positioned within the first area injection range of the inner wall of the boiler And to control the first region of the inner wall of the boiler to inject steam for a predetermined time.

When the control unit 600 receives the switching signal from the second limit switch 500, the control unit 600 stops the transfer of the lance tube 300 so that the nozzle unit 310 of the lance tube is positioned within the second area injection range of the inner wall of the boiler It is possible to control the second region of the inner wall of the boiler to inject steam for a predetermined time.

In this case, in order to rotate the lance tube in a state in which the lance tube is stopped, the driving unit is preferably divided into a first driving unit for rotating the lance tube and a second driving unit for feeding the lance tube .

For example, although not shown in the drawings, the first driving unit may include a first motor for rotating the lance tube, and reduction gears for transmitting the rotation torque of the first motor to the lance tube. The second drive unit may include a second motor for transferring the lance tube, and a rack pinion gear coupled to the second motor shaft for converting rotational motion of the second motor into linear motion. At this time, the first motor, the reduction gears, the second motor and the pinion gear are provided in the gear box, and the pinion gear is provided to move through a rack gear installed parallel to the lance tube through one surface of the gear box. At this time, the lance tube is engaged with the reduction gear of the first motor, rotated by the reduced rotational force of the first motor, and horizontally transported by driving of the second motor. Since the construction of such a driving unit is one of the conventional driving methods for rotating and horizontally moving the lance tube, it is practicable to anyone skilled in the art without having to show the drawings.

The first and second limit switches 400 and 500, which are in contact with the detection medium of the horizontally transported lance tube, transmit a switching signal to the controller 600. The controller 600, which receives the switching signal, 310 is applied to the second driving part to stop the transfer of the lance tube 300 so that the first area or the second area is located within the first area injection area or the second area injection area of the inner wall of the boiler, And to spray steam for a predetermined time.

In addition, the controller 600 selectively receives or sequentially receives the switching signals of the first and second limit switches 400 and 500 according to an external setting signal. That is, in response to a signal input from the user, the switching signal of the first and second limit switches 400 and 500 is selectively received to control the injection of the first region R1 of the inner wall of the boiler and the second region R2 selectively Or controls the first and second limit switches 400 and 500 to simultaneously receive the first region R1 spray and the second region R2 spray on the inner wall of the boiler according to a signal input from the user You can.

In addition, the control unit 600 can receive the information of the attachment from a monitoring device (not shown) that monitors the state of the inner wall of the boiler. Based on the received information, the switching signal of the first and second limit switches 400 and 500 It can be selectively received or sequentially received and controlled. That is, the boiler may be equipped with a monitoring device for monitoring the state of the deposit on the inner wall, and the control part can receive the information of the deposit from the monitoring device.

Here, the schematic concept of the monitoring apparatus according to one embodiment is to measure the temperature of the inner wall by using a thermal camera using the temperature difference between the inner wall where the deposit is accumulated and the other place around the periphery, It can be judged as the accumulation place. That is, the monitoring device may include a monitoring unit that captures the state of the deposit on the inner wall of the boiler or acquires information on the deposit by measuring the temperature, and an analysis unit that analyzes the information acquired by the monitoring unit to determine the location information of the deposit. The control unit receives the positional information of the place where the deposit is accumulated from the analysis unit of the monitoring apparatus and controls to selectively perform the first area injection and the second area injection on the inner wall of the boiler according to the position information of the received deposit .

As an example, the first area R1 of the inner wall of the boiler is steam-jetted to clean first, and then it is confirmed whether or not the deposit remains in the dark region b of the first region through the monitoring device. If the deposit remains in the shadow zone (b) of the first zone, the information on the location of the deposit is received from the sensor and the second zone R2 of the inner wall of the boiler is controlled to be sprayed.

8 (a) shows a case where the nozzle section of the lance tube is connected to the first region R1 of the inner wall of the boiler through the switching on (ON) operation of the first limit switch, FIG. 8B shows a case where the nozzle section of the lance tube injects steam to the first region R 1 of the inner wall of the boiler through the switching on (ON) operation of the first limit switch, 8 (c) shows a case in which steam is sprayed to the second region R2 of the inner wall of the boiler through the switching ON (ON) operation of the first limit switch The steam is sprayed to the first region R1 of the inner wall of the boiler through the operation of turning on the first limit switch and the second wall blower of the other side is switched to the first region R1 of the inner wall of the boiler through the switching- (ON) operation of the second limit switch, A second region (R2) of the multiple wall is when the steam.

As described above, according to the present invention, the first limit switch and the second limit switch are provided on the moving path of the lance tube to adjust the nozzle length of the lance tube inserted into the boiler, So that the deposit remaining in the shadow zone during the first zone injection can be efficiently removed by the common jet zone generated during the second zone injection.

Although the preferred embodiments of the present invention have been described, the present invention is not limited to the specific embodiments described above. It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the appended claims, And equivalents may be resorted to as falling within the scope of the invention.

100: driving unit 110: motor
120: Power transmission unit 121: Worm gear
122: shaft 123: first spur gear
124: second spur gear 125: flange portion
200: steam supply part 210: feed tube
300: lance tube 310: nozzle part
320: helical groove 330: flange
340: sensing medium 400: first limit switch
500: second limit switch
600:

Claims (10)

A lance tube coupled to a driving unit that receives steam from a steam supply unit that opens and closes a valve and generates power by receiving power from an external source, receives a rotational force, is transmitted by the rotational force of the driving unit and is introduced into the boiler; A first limit switch disposed in a transfer path of the lance tube for transmitting a switching signal for steam injection in a first area on the inner wall of the boiler during a switching ON operation according to the transfer of the lance tube; A second limit switch disposed behind the first limit switch on a transfer path of the lance tube and transmitting a switching signal for injecting a second area of the inner wall of the boiler during a switching on operation according to the transfer of the lance tube; And a control unit for opening a valve of the steam supply unit when the switching signal is received from the first limit switch or the second limit switch and outputting a control signal to supply steam to the lance tube,
The driving unit includes a motor generating a rotational force, a worm gear coupled to a driving shaft of the motor to decelerate a rotational force, a shaft coupled to a center of a worm wheel of the worm gear and disposed in a direction parallel to the lance tube, A second spur gear engaged with the first spur gear to decelerate the rotational force of the first spur gear and a hollow flange portion coupled to the center of the second spur gear and having a spiral formed on the inner circumferential surface thereof, Lt; / RTI >
Wherein the lance tube is coupled to the outside of the feed tube connected to the steam supply part so as to be rotatable and conveyable and is coupled with a spiral formed on the inner circumferential surface of the hollow flange part with a spiral groove formed on the outer circumferential surface along the longitudinal direction, A rotational force is transmitted from the driving unit to rotate and horizontally move,
The control unit receives the information of the attachment from the monitoring device for monitoring the state of the inner wall of the boiler, selectively receives the switching signals of the first and second limit switches based on the information, Or sequentially receives the switching signals of the first and second limit switches and steams the first region and the second region in succession, or receives the switching signal of the second limit switch to sequentially receive the switching signals of the first region and the second region, So that the steam is sprayed for a predetermined period of time. delete delete delete delete delete delete delete delete The method according to claim 1,
Wherein the first region of the inner wall of the boiler is a peripheral region of the lance tube drawn into the inner wall of the boiler and the second region of the inner wall of the boiler is an outer region of the first region.
KR1020150157854A 2015-11-11 2015-11-11 Wall-Blower Control System For Boiler KR101672315B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020150157854A KR101672315B1 (en) 2015-11-11 2015-11-11 Wall-Blower Control System For Boiler

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020150157854A KR101672315B1 (en) 2015-11-11 2015-11-11 Wall-Blower Control System For Boiler

Publications (1)

Publication Number Publication Date
KR101672315B1 true KR101672315B1 (en) 2016-11-04

Family

ID=57530225

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020150157854A KR101672315B1 (en) 2015-11-11 2015-11-11 Wall-Blower Control System For Boiler

Country Status (1)

Country Link
KR (1) KR101672315B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101874990B1 (en) * 2017-10-18 2018-07-05 주식회사 아이스기술 Rack Sliding Type Valve Rear Wall Blower

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0763320A (en) * 1993-08-27 1995-03-07 Mitsubishi Heavy Ind Ltd Soot blowing device
KR200437219Y1 (en) 2006-10-20 2007-11-16 한국남부발전 주식회사 Apparatus for Supporting Soot Blower Lance Tube System
JP2010117067A (en) * 2008-11-12 2010-05-27 Mitsubishi Heavy Ind Ltd Method and device for operation control of soot blower
KR101047137B1 (en) 2010-12-02 2011-07-07 한국중부발전(주) Soot blower with rack gear sliding apparatus and same method
KR101367541B1 (en) * 2013-07-09 2014-02-26 이순이 Boiler soot blower

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0763320A (en) * 1993-08-27 1995-03-07 Mitsubishi Heavy Ind Ltd Soot blowing device
KR200437219Y1 (en) 2006-10-20 2007-11-16 한국남부발전 주식회사 Apparatus for Supporting Soot Blower Lance Tube System
JP2010117067A (en) * 2008-11-12 2010-05-27 Mitsubishi Heavy Ind Ltd Method and device for operation control of soot blower
KR101047137B1 (en) 2010-12-02 2011-07-07 한국중부발전(주) Soot blower with rack gear sliding apparatus and same method
KR101367541B1 (en) * 2013-07-09 2014-02-26 이순이 Boiler soot blower

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101874990B1 (en) * 2017-10-18 2018-07-05 주식회사 아이스기술 Rack Sliding Type Valve Rear Wall Blower

Similar Documents

Publication Publication Date Title
JP5218091B2 (en) Reactor cleaning device
CA2491960A1 (en) Multi-media rotating sootblower and automatic industrial boiler cleaning system
JP2647331B2 (en) Equipment to clean the boiler heating surface
US20080271685A1 (en) Detonative cleaning apparatus
KR101672315B1 (en) Wall-Blower Control System For Boiler
SE0602350L (en) A method for rebuilding a sootblowing system in a recovery boiler, a sootblower for a recovery boiler and a sootblowing system including several sootblowers
CN108439416B (en) Quartz sand pickling purification device
KR101697138B1 (en) Pre-blowing Soot Blower
US3541999A (en) Apparatus and process for slag deposit removal
KR101367541B1 (en) Boiler soot blower
CN104165354B (en) A kind of coal cinder burner
KR20150010199A (en) Soot Blower Having Structure of Vibration Reduction and Friction Prevention
CN101865474B (en) Slag discharging device and pulverized coal burner using same
KR101927527B1 (en) Apparatus and method for washing nozzle pipe of boiler
KR101874990B1 (en) Rack Sliding Type Valve Rear Wall Blower
KR101554907B1 (en) soot-blower controlsystem for boiler
CN111089304A (en) Ash removal device for reducing high-temperature corrosion
JP5218821B2 (en) Biomass gasifier
CN211925800U (en) Ash removal device for reducing high-temperature corrosion
JP2010243122A (en) Clinker removing device
TW201702530A (en) Soot blower
CN105509076A (en) Mechanical slag removing method and device in pulverized coal combustion application of lime sleeve kiln
KR101026769B1 (en) Dust Exclusion Device Having Waste Heat Boiler
JP4801282B2 (en) Converter tuyere opening method and apparatus
CN216591760U (en) Be applied to and burn rotatory washing unit of burning furnace boiler tube

Legal Events

Date Code Title Description
A201 Request for examination