KR100786340B1 - Purge Bracket for Feeder Clogged Switch - Google Patents

Abstract

The present invention relates to a purge bracket for a feeder clogged switch which can remove coal attached to the feeder clogged switch during operation due to a change in the properties of coal due to wet coal or cold copper.

The purge bracket for the feeder plug switch of the present invention is a purge bracket for removing coal dust attached to the plug plug, the insertion hole is formed in the center and a plurality of first fastening holes are formed at a predetermined distance from the insertion hole is formed A fixed flange, a hollow portion is formed therein so as to communicate with the insertion hole, the insertion tube is coupled to one side of the fixed flange, and the coupling hole is coupled to the other side of the fixed flange and the feeder clogging switch is coupled to the center of the coupling hole At least one air injection hole is formed to be spaced apart from a predetermined distance, and a purge flange having a second fastening hole corresponding to the first fastening diameter is formed to be spaced apart from the air injection hole at a predetermined distance. At least one nozzle is formed along the longitudinal direction in the shape of an open pipe, and one end of the open air Coupled to the nozzle tube and an air injection hole which is fixed into the ipgong is characterized by consisting of a blowing means for supplying compressed air to the nozzle tube.

Description

Purge Bracket for Plugged Switch of Coal Feeder}

1 is a schematic view showing the installation position of a conventional feeder plug switch.

Figure 2 is an exploded perspective view of a purge bracket for a feeder clogged switch according to the present invention.

Figure 3 is an exploded perspective view showing the installation and coupling state of the purge bracket for the feeder clogged switch in accordance with the present invention.

Figure 4 is a schematic view showing a state in which blower is connected to the purge bracket for the feeder plug switch according to the present invention.

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

1: low coal 2: coal feeder

3: Differential 4: Pipe

10: fixed flange 11: insertion hole

13: first fastening hole 20: insertion tube

30: fuzzy flange 31: coupling hole

33: air injection hole 35: second fastening hole

40: nozzle tube 41: nozzle

50: support ring 60: blowing means

65, 66, 67, 68: Valve 1 to Valve 4 70: Feeder clogging switch

75: sensor 100: purge bracket for feeder plug switch

The present invention relates to a purge bracket for a feeder clogged switch. More specifically, by removing the coal attached to the plug of the feeder plug during operation due to the change in the properties of coal due to wet coal or cold copper, it is possible to prevent the stoppage of the powder due to the malfunction of the plug switch and to improve the reliability of the equipment. A purge bracket for a feeder clogged switch.

In general, a thermal power plant generates steam by burning fossil fuels such as oil, coal, or gas in a burner, and generates electricity by rotating the turbine using the generated steam.

Oil or gas can be supplied directly to the burner as long as it is vaporized, but coal is supplied to the burner in the form of a fine powder in a lump form. At this time, in the process of crushing coal, the coal stored in the low coal is transferred to the mill using a coal feeder, and the coal is pulverized into fine powder in the mill.

1 is a schematic view showing the installation position of a conventional feeder plug switch, as shown, in order to detect the blockage of the feeder and the pipe (2,4) during the transfer of coal, the feeder and the pipe (2,4) ) Clogging switch 70 was installed. The clogging switch 70 may damage the belt and the main motor of the feeder 2 when the clogging occurs in the process of supplying coal stored in the low coal storage 1 from the feeder 2 to the mill 3. It is to prevent that.

However, when the coal or coal powder moving the feeder and the pipe lines 2 and 4 is attached to the sensor 75, the clogging switch 70 malfunctions. In particular, when the coal containing a large amount of water is supplied to the sensor 75 by rainy season heavy rain or winter spontaneous fire extinguishing sprinkling operation, a malfunction occurred frequently. In addition, if a malfunction occurs, stop the feeder (2), disconnect the clogging switch 70, remove the coal powder attached to the sensor 75 and reinstall it by operating the feeder (2) again, the system There was a problem that the overall reliability is low.

Therefore, it was necessary to develop an apparatus that can effectively purge the coal powder attached to the sensor 75 without stopping the feeder 2.

The present invention has been made to solve the above-mentioned problems, an object of the present invention by removing the coal attached to the plug of the feeder plug by the change in the appearance of coal due to wet coal or cold copper, during operation, clogging switch It is to provide a purge bracket for a feeder clogged switch which can prevent the stoppage of the grinding machine due to the malfunction and improve the reliability of the equipment.

In order to achieve the above object, the fugget clogging switch for purge bracket according to the present invention has a purge bracket for removing coal dust attached to the clogged feeder, and an insertion hole is formed in the center and is spaced a predetermined distance from the insertion hole. The fixing flange is formed of the first fastening hole, the hollow portion is formed inside so as to communicate with the insertion hole and the insertion pipe is coupled to one side of the fixed flange, coupled to the other side of the fixed flange and the feeder clogging switch is coupled to the center The coupling hole is formed and at least one air injection hole is formed to be spaced apart from the coupling hole by at least one distance. At least one nozzle is formed in the longitudinal direction in a pipe shape having one end open at an inside. The opening and the one end coupled to the nozzle tube and an air injection hole which is inserted fixed to the air injection hole is characterized by consisting of a blowing means for supplying compressed air to the nozzle tube.

Preferably, the nozzle tube may be made to include a support ring for fixing to be divided at regular intervals.

Such, the support ring may be composed of an upper support ring for fixing the upper portion of the nozzle tube and a lower support ring for fixing the lower portion of the nozzle tube.

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

Figure 2 is an exploded perspective view of a purge bracket for a feeder clogged switch according to the present invention, Figure 3 is an exploded perspective view showing the installation and coupling state of the purge bracket for a feeder clogged switch in accordance with the present invention, Figure 4 is the present invention Is a schematic diagram showing a state in which a blowing means is connected to a purge bracket for a supply plug of the carbon dioxide.

As shown in Figures 2 to 4, the purifier bracket 100 (hereinafter, referred to as 'purge bracket') for the feeder plug switch of the present invention, the feeder mixing switch 70 (hereinafter referred to as 'block switch') ) Is to remove the coal powder is attached to the sensor 75 of the clogging switch 70. At this time, the clogging switch 70 is provided in a pair, which is installed in the first clogging switch 71 is installed in the feeder (2), the pipeline 4 between the feeder (2) and the differentiator (3). It is divided into a second clogging switch 72.

The purge bracket 100 is composed of a fixed flange 10 and the insertion tube 20, the purge flange 30, the nozzle tube 40, the support ring 50 and the blowing means (60).

The fixed flange 10 may be formed in a disk shape, the insertion hole 11 is formed in the center thereof. In addition, a plurality of first fastening holes 13 are formed at a predetermined distance from the insertion hole 11.

Insertion tube 20 is for fixing the fixed flange 10 to the feeder and the pipe (2, 4) is formed in a pipe shape having an inner diameter of the insertion hole 11 or more formed in the fixed flange 10, the fixed flange Is coupled to the end of the insertion hole 11 to protrude to one side of (10).

The insertion pipe 20 has a fixed flange 10 in the through hole 5 formed in the feeder and the line (2, 4) is to be installed at a predetermined interval from the surface of the feeder and the line (2, 4) It is inserted so that

The purge flange 30 may be formed in a disc shape having the same outer diameter as the fixed flange 10. In addition, the coupling hole 31 is coupled to the blockage switch 70 is formed in the center, a plurality of air injection holes 33 are formed at equal intervals by being spaced apart from the coupling hole 31, the air injection hole ( A plurality of second fastening holes 35 corresponding to the first fastening holes 13 are formed to be spaced apart from the outside of the 33 by a predetermined distance.

At this time, the screw hole is formed in the coupling hole 31 and the air injection hole 33, the screw portion may be formed to a depth of about half in the air injection hole (33). The purge flange 30 is coupled by the fixed flange 10 and the bolt 90 and the nut 91.

The nozzle tube 40 is formed in a pipe shape having one end opening and a hollow part inside, and the opening end is inserted into the air injection hole 33 of the purge flange 30. The nozzle tube 40 is provided with at least one, preferably four may be provided.

On the other hand, in each nozzle tube 40, a plurality of nozzles 41 are formed in a straight line at regular intervals along the longitudinal direction. At this time, the nozzle 41 may be formed on the upper side of the nozzle tube 40, the diameter may be formed of about 5 to about 3mm.

The support ring 50 is configured to fix the nozzle tube 40, which is provided with at least one or more, at predetermined intervals, and is formed in an annular shape. In addition, the support ring 50 may be divided into an upper support ring 51 coupled to the upper portion of the nozzle tube 40 and a lower support ring 53 coupled to the lower portion.

At this time, the nozzle tube 40 may be coupled along the outside of the support ring 50, the sensor 75 of the clogging switch 70 is inserted into the support ring 50. Therefore, the inner diameter of the support ring 50 is preferably formed to a size such that the sensor 75 of the clogging switch 70 does not interfere.

Meanwhile, the upper support ring 51 may have a smaller outer diameter than the lower support ring 53. Accordingly, the nozzle tube 40 is formed to be inclined toward the center of the upper support ring 51. This is to allow the coal powder to be removed in one direction when the sensor 75 of the clogging switch 70 is contaminated.

Blowing means (60) is for supplying compressed air to the nozzle tube (40) is coupled to the air injection hole 33 of the purge flange (30). The blowing means 60 is a first blowing means 61 for supplying compressed air to the nozzle tube 40 at normal times, and a second for supplying compressed air to the nozzle tube 40 when the clogging switch 70 is malfunctioning. Blowing means 63 may be divided.

At this time, the first blowing means 61 supplies the compressed air to the nozzle tube 40 of the purge bracket 100 through the valve 1 (65) and the valve 2 (66). As the first blowing means 61, compressed air supplied for sealing to the fine powder 2 may be used. The compressed air has a pressure of about 1 kg / cm 2 and is normally supplied to prevent the sensor 75 of the clogging switch 70 from being contaminated.

In addition, the second blowing means 63 supplies compressed air to the nozzle tube 40 of the clogging switch 70 through the valve 3 (67) or the valve 4 (68), the sensor 75 of the clogging switch 70 In order to supply compressed air when coal powder is attached to the air), a general air compressor (not shown) may be used. At this time, the pressure of compressed air is about 7 kg / cm 2.

Hereinafter, the installation and operation of the embodiment of the present invention will be described with reference to the accompanying drawings.

Looking at the coupling and installation of the purifier bracket for the feeder clogged switch 100 according to the present invention, first, the insertion pipe 20 is coupled to one side of the fixed flange (10). At this time, the insertion tube 20 is coupled so that its central axis is the same as the central axis of the insertion hole 11 formed in the fixed flange (10).

Thereafter, the upper or lower support rings 51 and 53 are spaced apart at predetermined intervals so that the central axis is located in a straight line, and the plurality of nozzle tubes 40 are disposed outside the upper or lower support rings 51 and 53. Combine to divide at equal intervals. At this time, the nozzle tube 40 is coupled to the upper or lower support rings (51, 53) so that the nozzle 41 toward the center of the support ring 50, it may be, for example, welding by this coupling method.

The fixed nozzle tube 40 is inserted into the air injection hole 33 formed in the purge flange 30 to be coupled. In this case, the nozzle tube 40 may be welded and coupled to the purge flange 30 so that the nozzle tube 40 is sealed with the air injection hole 33.

Next, the blowing means 60 for supplying compressed air to the nozzle tube 40 is connected. At this time, the blowing means 60 is connected to the nozzle tube 40 through the air injection hole 33 formed in the purge flange (30).

Thereafter, the purge bracket 100 is completed by combining the fixed flange 10 and the purge flange 30. At this time, the nozzle tube 40 is inserted into the insertion hole (11) of the fixed flange 10, the first and second fastening holes (35) are coupled so as to match the fixed flange 10 and the purge flange (30). It can be fixed using the bolt 90 and the nut 91 so that the removable.

The purge bracket 100 coupled as described above is coupled to the feeder and the pipe lines 2 and 4. At this time, the purge bracket 100 is inserted into the through-hole 5 is formed in the feeder and the pipe (2, 4) is fixed and inserted. At this time, the insertion tube 20 may be joined by welding so that the through-holes 5 are sealed.

After coupling the purge bracket 100 to the feeder and the pipe lines 2 and 4, the clogging switch 70 is coupled through the coupling hole 31 formed in the purge flange 30. At this time, the sensor 75 of the clogging switch 70 is inserted to be located between the nozzle 41 formed in the nozzle tube (40).

As such, when the installation of the clogging switch 70 and the purge bracket 100 is completed, the feeder 2 is operated to supply coal to the fine powder 3. At this time, when the clogging switch 70 is operating normally, the first blowing means 61 supplies compressed air to the purge bracket 100 through the valve 1 (65) and the valve 2 (66) to block the clogging switch (70). Coal powder is prevented from adhering to the sensor 75.

On the other hand, when coal is supplied to the coal mill or the wet coal or cold copper, the coal powder may be attached to the sensor 75 of the clogging switch 70, although compressed air is normally supplied as described above.

At this time, if coal dust is attached to the sensor 75 of the first clogging switch 71 and causes malfunction, the valve 1 (65), the valve (2) 66 and the valve (4) 68 are closed and the valve 3 (67) is closed. The compressed air supplied from the second blowing means 63 is supplied to the first clogging switch 71 to remove coal powder attached to the sensor 75.

Next, if coal dust is attached to the sensor 75 of the second clogging switch 72 and causes malfunction, the valve 1 (65), the valve (2) 66 and the valve (3) 67 are closed and the valve (4) 68 is closed. Compressed air supplied from the second blowing means (63) through the lower second clogging switch 72 is removed to remove the coal powder attached to the sensor (75).

Therefore, even when the clogging switch 70 malfunctions while the feeder 2 is operating, coal powder adhering to the sensor 75 of the clogging switch 70 can be removed without stopping the feeder 2. .

The present invention is not limited to the above-described embodiments, and the present invention can be embodied in other forms by those skilled in the art without departing from the spirit of the invention. All design changes made within the technical scope equivalent to the claims are considered to be included within the scope of the present invention.

As described above, the present invention has the advantage that by removing the coal attached to the plug of the feeder plug during operation, it is possible to prevent the stop of the pulverizer due to the malfunction of the blocked switch, and improve the reliability of the equipment.

Claims (3)

A purge bracket for removing coal dust attached to a feeder plug switch, A fixed flange having an insertion hole formed at a center thereof and spaced apart from the insertion hole by a predetermined distance to form a plurality of first fastening holes; A hollow part formed therein so as to communicate with the insertion hole and inserted into one side of the fixed flange; Is coupled to the other side of the fixed flange is formed in the center coupling hole is coupled to the plug of the feeder plug is spaced apart from the coupling hole at least one or more air injection hole is formed and is spaced a predetermined distance to the outside of the air injection hole A purge flange having a second fastening hole corresponding to the first fastening diameter; A nozzle tube positioned inside the insertion hole and having at least one nozzle formed in a pipe shape in which one end is opened, and having one open end inserted into the air injection hole; And A purge bracket for a feeder clogged switch, characterized in that it is coupled to the air injection hole made of a blowing means for supplying compressed air to the nozzle tube. The purge bracket of claim 1, further comprising a support ring for fixing the nozzle tube to be divided at predetermined intervals. The purge bracket of claim 2, wherein the support ring comprises an upper support ring for fixing the upper portion of the nozzle tube and a lower support ring for fixing the lower portion of the nozzle tube.

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