KR20130139097A

KR20130139097A - Water spray device for cleaning a combustor of coal boiler

Info

Publication number: KR20130139097A
Application number: KR1020120062842A
Authority: KR
Inventors: 김세경
Original assignee: 김세경
Priority date: 2012-06-12
Filing date: 2012-06-12
Publication date: 2013-12-20

Abstract

In the water spray washing apparatus for removing clinker and ash adhering to the wall in the boiler furnace, the water spray washing apparatus 1 is mounted to the frame 2 which can reach the opening 24. The pipe window 12 for supplying the washing water is a sliding guide inside the pipe 5, and the pipe 5 is sequentially connected to the joint 21 and the ring 22 and the housing 23, and the housing 23 is It is attached to the opening part 24 of the frame 2. As shown in FIG. The tube 12 is enabled to move up and down along the guide 11, the guide 11 is connected to the ring 6 and the frame 10 to rotate the movement at the same time. In this driving method, the injection angle of the pipe 12 can be made as large as possible, and the thermal deformation of the nozzle 12a generated by the flame can be reduced by being separated from the opening 24 when the operation stops. At the same time, it is possible to reduce the size of the water spray cleaning device (1) and to reduce the installation area, and to facilitate the separation of the pipe (12) to facilitate maintenance.

Description

WATER SPRAY DEVICE FOR CLEANING A COMBUSTOR OF COAL BOILER}

The present invention relates to a high pressure water spray cleaning device, and more particularly, to a water spray device and a driving method for removing clinker and ash generated in the water cooling wall inside the furnace during the normal operation of the power plant.

In general, the water spray device is a device for discharging water at high speed through a pipe and a hose by using a high pressure water pump, and is commonly used for fire fighting fire suppression water supply, automobile washer, food washer, and various industries. It is mainly used for cleaning purposes such as field field. Recently, a fire hydrant or a fire truck water supply device is used in a place requiring fire extinguishing, and it is possible to quickly extinguish a fire generating area by securing the straightness and spraying distance of water injection nozzles and pipes such as fire hoses.

Heating facilities, such as boilers in thermal power plants, are mainly fed with coal, so that various sludges, clinkers, and ashes generated during combustion are left in the furnace walls where boiler tubes are attached and accumulated. If the boiler operation is carried out as such a substance remains, the heat transfer efficiency is lowered as a whole due to insufficient heat transfer in the boiler tube, resulting in a decrease in power generation efficiency.

Water spray for power plant plant is a device for spraying the water passing through the nozzle at the end through the boiler water supply pipe to the wall surface of the heating furnace, the water spray device to automatically drive the various valves, pipes, nozzle injection mechanism System is being used. During the operation of the boiler, the temperature sensor installed on the furnace wall detects the heat transfer drop and automatically sprays water to the area and cleans it. In order to supply the washing water to the power plant washing equipment, a water supply pump is installed in the water supply tank, and it is composed of a high pressure pipe, and automatically controls the pump and the valve, and then controls the mechanism of the pipe part. In order to install such a device, an opening must be made by remodeling the tube of the furnace wall, and a lot of labor has to be followed in order to attach and detach the insulating material covering the furnace. In recent years, the emphasis has been placed on optimizing the miniaturization of equipment used in power generation plants and the like, and at the same time, highlighting the efficiency of operation. Accordingly, shorter construction periods, shorter working periods, lower costs, and ease of maintenance are required.

Prior art literature

Patent literature

[Reference 1] US 6581549 B2 (Michael W. stewart) Jun, 24, 2003

[Document 2] WO 2009/030680 A2 12, 03, 2009 p. 9, lines 25-30, drawings 1-3

[Reference 3] US 6655397 B2 (Clinton A. Brown) DEC, 2, 2003

The present invention allows the nozzle to be easily separated according to the purpose of use while allowing the spraying of high pressure water, so that the washing water can be sprayed while changing the spraying distance and the spraying pressure, and also directly exposed to the flame while not washing. The purpose is to reduce the thermal deformation of the nozzle.

Existing water spray cleaning device has a need to miniaturize by installing a separate device in addition to the driving area, and the need to block the heat transmitted to the mechanism portion, the present invention is to miniaturize the water spray cleaning device, the need It is an object of the present invention to ensure a driving method.

The present invention is a water spray cleaning device for thermal power generation, the frame (2) is welded and fixed to the heating facility wall surface (3); A circular ring gear 6 disposed at the front of the frame; A pipe (5) moving along the groove formed in the ring gear (6); It is connected to the inside of the pipe (5), the end is provided with a water spray cleaning device for thermal power generation comprising a; (12) for washing water supply pipe having a nozzle (12a).

A guide 11 provided on the front surface of the ring gear 6 and having a guide groove 17 parallel to the groove of the ring gear; And a vertical movement member 18 which is slidably movable along the guide groove 17. The vertical movement member 18 is coupled to the pipe window 12 to guide the pipe window along the guide groove 17. It can be pivoted.

An inner ring (22) provided inside the frame (2); And a joint 21 connected to the inside of the inner ring 22 by a pin 21-1, and the pipe 5 may be fixed to the center of the joint 21.

It further comprises a connecting member 10 for connecting the guide 11 spaced apart from the front of the ring gear 6, the ring gear 6 is based on the center of the inner ring (22) It can rotate horizontally with respect to the plate 4 surface.

The tube 12 rotates in accordance with the rotational movement of the ring gear 6, while spraying water through the nozzle of the end while linearly moving in accordance with the vertical movement of the vertical movement member (18).

As described above, by optimizing the driving apparatus for washing the water jet of the boiler of the power plant according to the present invention, it is possible to simplify the use equipment, ease of installation and shorten the period, low cost, ease of maintenance, and ease of control. It has excellent practical effect.

1 is a perspective view of the entire assembly of the present invention
2 is an exploded view of the whole of the present invention
3 is a longitudinal cross-sectional view of the entire assembly of the present invention.
4 is a cross-sectional view of the entire assembly of the present invention.
5 is an exploded view of a part assembled in the opening of the frame 2
6 is a longitudinal sectional view showing another embodiment of the present invention.
7 is a front view illustrating the driving principle of the present invention.
8 is a longitudinal cross-sectional view illustrating the driving principle of the present invention.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings. Note that the same components in the accompanying drawings are represented by the same reference numerals as possible. In addition, descriptions of well-known functions and configurations that may blur the gist of the present invention will be omitted. For the same reason, some of the elements in the accompanying drawings are exaggerated, omitted or schematically illustrated.

1 and 2 illustrate the installation example of the water spray washing apparatus 1 according to the present invention, and show a position where the whole of the present invention is assembled. The heating facility wall surface 3 is composed of a tube assembly, and in order to install the water spray cleaning device 1, the frame 2 is welded and attached to the heating facility wall surface 3. The instrument assembly 4 is then attached to the frame 2. The mechanism assembly 4 includes a ring gear 6 for rotational movement, a plate 7 attached to the ring gear 6, a ring gear support member 8 that rotates with the ring gear, and a servomotor 13. A power transmission member 9 for transmitting power, a pipe window 12 for transferring water, a guide 11 for vertical movement of the pipe window 12, and a connection connecting the guide 11 and the ring gear 6. The member 10 is included, and the servomotor 13 is for the rotational movement of the pipe. In addition, the pin-shaped guide connecting portion 15 for connecting the servo motor rotating body 14 and the guide 11 connected to the servo motor 13, the servo motor 16 for the vertical movement of the pipe window, fixed to the window Up and down movement member 18 is coupled is completed is completed. At this time, the vertical movement member 18 is to be transferred up and down along the groove 17 of the guide (11).

Here, the up and down movement member 18 moves up and down is referred to as the up and down direction of the servo motor 16 attached to the guide 11 to the bottom. This is because the guide 11 is rotated together with the ring gear 6, so when viewed from the front as shown in FIG. 3, the vertical movement of the guide 11 may be changed from side to side.

3 and 4 are cross-sectional views and longitudinal sections of the water jet cleaning apparatus 1, respectively. As shown, the welded frame 2 is filled with a refractory 20, and the outside of the frame has a heat insulator 19 surrounding the furnace to block heat from the furnace. The housing 23 is connected to and fixed to the center portion of the opening 24 of the frame, and a ring 22 that rotates about the central axis of the opening 24 is fitted inside the housing 23, and an inner ring ( 22, the joint 21 is connected by two pins 21-1, and the pipe 5 is fastened to the joint 21 again. At this time, since the joint 21 should be able to move simultaneously according to the vertical movement of the guide 11, the pipe window 12 is slidably connected in the same axial direction as the axis of the pipe connected to the joint 21.

5 shows a position diagram of a part assembled to the frame 2 so as to be easily understood in detail with respect to the above-described part. In order to enable the vertical movement of the joint 18, the pin 18-1 must be fixed to the joint and a device for transmitting the power of the servomotor 16 is required. It is ideal to connect with. However, in the present invention, this portion is not shown and omitted. And, as shown in the pipe 12 is fixed to the pipe (5) is not fastened because it slides because only the up and down member 18 is easy to disassemble, so the nozzle 12a at the end of the pipe easily It can be separated.

6 shows the driving direction of the pipe 12 in the water spray washing apparatus 1 as a whole. That is, the pipe window 12 is a vertical movement member 18 is moved along the groove of the guide 11, and shows that the pipe is moving simultaneously about two pins with respect to the central axis.

Separately, it is noted that the inner ring 22 is in motion at the center of the opening 24 to allow the pipe 5 to rotate about its center.

In addition, the shape of the guide 11 will be described. In order to spray water into the heating furnace, the spray angle of the water may be very important. In the present invention, the shape of the guide 11 may be arced to increase the spray angle of the water.

FIG. 7 is a front view showing the guide 11 and the ring gear 6 connected to the connecting member 10 in the water spray washing apparatus 1 to be fixed and at the same time showing rotational motion. At this time, the inner ring 22 and the ring gear 6 rotating inside the housing 23 should rotate in the same axis, so care must be taken when assembling.

8 is a cross-sectional view illustrating the driving principle of the water jet cleaning device 1, it can be seen that the water jet cleaning device 1 is moving up and down and the pipe window 12 is falling from the center. That is, if the nozzle 12a at the end of the pipe 12 is separated from the center, and the ash or clinker is positioned upward to prevent the intrusion of the pipe 5 into the inside of the pipe 5, the flame directly It has the effect of reducing heat transfer.

The present invention has an opening 24 in the water cooling wall in the furnace of the power plant and has an area for installing the water spray cleaning device 1 and is configured to program control the operation of the water spray pipe 12, The water spray washing apparatus 1 should be attached by welding the frame 2 to the outer wall of the furnace so that the water spray washing apparatus 1 can reach the opening 24, and the pipe window 12 supplying the washing water which is a component of the water spray washing apparatus 1. ), And the pipe (5) for guiding the pipe, sequentially connected to the joint 21 and the inner ring (22), the housing 23, the pipe (12) to enable the vertical movement and rotational movement. In the driving method for controlling the pipe 2, the pipe 5 for guiding the pipe 12 is a sliding fastening method rather than a fastening method with the pipe 12, so that the nozzle 12a at the end of the pipe 12 is fixed. ) Can be easily replaced.

In order to precisely control the path control of the pipe 12, the water spray washing apparatus 1 can be reduced in size so that the center of gravity of the pipe can be reduced, thereby reducing the force transmitted to the pipe. In addition, it is preferable to use the servomotors 13 and 16 for transmitting power in rotational and linear motions, respectively, and install them in the frame 2 area. In this way, it is possible to optimize, such as reducing the size of the water spray cleaning device 12, and finally can solve the problems in installation and operation by reducing the weight and reducing the installation area.

In addition, when the nozzle 12a at the end of the window 12 reduces the exposure from the flame by increasing the injection angle of the window 12 as far as possible and away from the opening 24 when the operation stops, the radiant heat of the flame is directly This prevents the transfer of material, thus reducing material deformation of the material.

As described above, by optimizing the driving apparatus for washing the boiler water spray of the power plant of the present invention, it is excellent in simplification of use equipment, ease of installation and shortening of time, low cost, ease of maintenance, and ease of control. It has a practical effect.

1: washing device 2: frame
3: heating equipment wall 4: mechanism assembly
5: pipe 6: ring gear
7: Plate 8: Ring Gear Support Member
9: power transmission member 10: connecting member
11: Guide 12: Window
13: servomotor 14: servomotor rotor
15: Guide connection part 16: Servomotor for vertical movement
17: guide groove 18: vertical movement member
19: insulation 20: refractory
21: Joint 21-1: Pin
22: inner ring 23: housing
24: opening

Claims

Water spray cleaning device for thermal power generation,
A frame 2 welded to and fixed to the heating facility wall 3;
A circular ring gear 6 disposed at the front of the frame;
A pipe (5) moving along the groove formed in the ring gear (6); And
Is connected to the inside of the pipe (5), the end of the water spray cleaning device for thermal power generation comprising a; (12) for washing water supply pipe having a nozzle (12a).

The method of claim 1,
A guide 11 provided on the front surface of the ring gear 6 and having a guide groove 17 parallel to the groove of the ring gear; And
And a vertical movement member 18 which is slidable along the guide groove 17.
The vertical movement member (18) is coupled to the pipe (12) is a water spray cleaning device for thermal power generation, characterized in that to pivot the pipe along the guide groove (17).

3. The method of claim 2,
An inner ring (22) provided inside the frame (2); And
And a joint 21 connected to the inside of the inner ring 22 by a pin 21-1.
The pipe (5) is water spray cleaning device for thermal power generation, characterized in that fixed to the center of the joint (21).

The method of claim 3, wherein
And a connecting member 10 which is spaced apart from the front of the ring gear 6 to connect the guide 11.
The ring gear (6) is water spray cleaning device for thermal power generation, characterized in that the horizontal rotational movement relative to the plate (4) surface with respect to the center of the inner ring (22).

5. The method of claim 4,
The power pipe 12 is rotated in accordance with the rotational movement of the ring gear 6, while the linear movement in accordance with the vertical movement of the vertical movement member 18 while spraying water through the nozzle of the end Water spray cleaning device for