KR100723728B1 - Inspection Window of Boiler - Google Patents

Abstract

The present invention relates to an inspection window of a boiler.

The present invention provides an inspection window for inspecting an interior of a boiler, the inspection window for inspecting an interior of a boiler comprising: an outer wall forming an outside of the boiler and forming a first opening surface; A first frame attached to an outer circumferential surface outside the first opening surface and having a window frame shape; A plate-shaped second frame fixed to the first frame and having a transparent window; A sliding plate reciprocating left and right in a space formed by the first frame and the second frame; And a driving rod and a driving unit for driving the sliding plate, wherein the first opening surface, the first frame, and the transparent window are positioned on the same line, so that the inside of the boiler is visually opened according to the left and right reciprocating motion of the sliding plate. An inspection window of a boiler is provided, which is opened or closed for inspection.

According to the present invention, by installing the sliding plate and the transparent window and sliding the sliding plate by the drive unit, the effect of grasping the boiler flame condition and the like without opening the boiler inspection window to the outside and directly checking the temperature inside the boiler through the hole There is.

Boiler, Flame, Inspection Window

Description

Inspection Window of Boiler

1 is a perspective view showing a conventional boiler inspection window,

Figure 2 is a cross-sectional view showing a conventional boiler inspection window,

3 is a perspective view of a boiler inspection window according to a preferred embodiment of the present invention;

4 is a cross-sectional view of the boiler inspection window according to a preferred embodiment of the present invention.

<Description of Symbols for Main Parts of Drawings>

100: boiler access window 105: hinge

110: inner case 115: fastening bolt

120: outer case 125: boiler outer wall

130: locking device 200: air control valve

205: seal air line 210: cooling air line

300: sliding plate 305: brush

310: spring bar 315: first frame

320: driving rod 325: driving unit

330: second frame 335: transparent window

340: hole 345: first opening surface

350: second opening surface 400: spring

The present invention relates to an inspection window of a boiler. More specifically, the present invention relates to a boiler inspection window provided with a sliding plate and a transparent window to grasp the boiler internal temperature and flame state without opening the boiler inspection window provided on the boiler opening surface.

Thermal power generation accounts for about 60% of Korea's electricity production, more than hydropower or nuclear power. Fuels of domestic thermal power generation include bituminous coal, anthracite coal, internal combustion, LNG-composite, diesel and bunker C oil, among which bituminous coal power plants are responsible for base loads (basically used power) and peak loads with LNG-combined thermal power. It is common to take charge of (power when using the most power).

Thermal power plants have the advantages of simpler structure, shorter construction cost, and shorter construction period than nuclear power plants.

On the other hand, the biggest drawback of thermal power plants is air pollution. Thermal power plants emit carbon dioxide, SOx, and NOx, which are considered to be the main causes of global warming, and thus minimize the emission of air pollutants by optimizing the state inside the boiler. In addition to maintaining the internal temperature of the boiler at an appropriate level, the operator checks the condition of the boiler from time to time to optimize the condition of the flame.

Accordingly, the boiler inspection window is provided outside the boiler, and the flame state and temperature inside the boiler are checked directly or indirectly through the boiler inspection window.

Some boilers are equipped with facilities to check the internal flame state and temperature from the outside indirectly without looking directly inside, but this facility is not only expensive but also inferior because it grasps the state inside the boiler indirectly. .

1 is a perspective view showing a conventional boiler inspection window, Figure 2 is a cross-sectional view showing a conventional boiler inspection window. As shown, the boiler inspection window 100 is provided with a hinge 105 and a locking device 130 to open and close the boiler opening surface (not shown) formed on the boiler outer wall 125, and with a fastening bolt 115 The inner case 110 and the outer case 120 fixed to each other have a structure in which a boiler opening surface (not shown) is sealed.

In general, the interior of the boiler outer wall 125 is a high temperature state because the flame is formed, the coolant such as water flows to the boiler outer wall 125 to maintain a constant temperature of the boiler surface.

On the other hand, the flame is directly transmitted to the inner case 110 through the boiler opening surface (not shown), the seal air line 205 is connected between the inner case 110 and the boiler outer wall 125 so that heat is not transmitted. do.

In the case of the constant pressure boiler, since the pressure inside the boiler is higher than atmospheric pressure, when the lock device 130 provided in the boiler inspection window 100 is released and the boiler inspection window 100 is opened around the hinge 105, the flame is moved to the outside. Leaks.

The inside of the constant pressure boiler is characterized by the fact that the flame is ejected to the outside because it is higher than the atmospheric pressure.In this case, the strength of the flame is not only strong but the pressure inside the boiler is fluctuated due to the flame that is ejected, resulting in unstable operation of the entire boiler. There is a problem.

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On the outside of the boiler inspection window 100, a seal air line 205 for supplying a seal air that functions to prevent heat transfer between the boiler outer wall 125 and the inner case 110 is provided on the boiler inspection window 100. The cooling air line 210 is provided, and the seal air line 205 and the cooling air line 210 are provided with air control valves 200, respectively, so that the flow rate of air can be adjusted by operating the air control valves 200. .

The cooling air line 210 serves to prevent the flame from being released to the outside when the boiler inspection window 100 is opened and to lower the temperature of the boiler inspection window 100. This is to prevent the boiler inspection window 100 from being deformed and deteriorated due to the high temperature.

In some power plant boilers, when the capacity is adjusted to 100 MW or more, a situation occurs in which the boiler inspection window 100 cannot be opened because the temperature inside the boiler is 1300 ° C. or more. Therefore, in order to analyze the temperature and condition inside the boiler, the indirect contact type of expensive equipment is used, the price is expensive and there is a problem that only one or two states of the specific part of the boiler can be analyzed.

In order to solve the above problems, the present invention is to provide a boiler inspection window provided with a sliding plate and a transparent window to grasp the boiler internal temperature and flame state without opening the boiler inspection window provided on the boiler opening surface. For that purpose.

In order to achieve the above object, the present invention, in the inspection window for inspecting the interior of the boiler, the outer wall which forms the first opening surface of the boiler; A first frame attached to an outer circumferential surface outside the first opening surface and having a window frame shape; A plate-shaped second frame fixed to the first frame and having a transparent window; A sliding plate reciprocating left and right in a space formed by the first frame and the second frame; And a driving rod and a driving unit for driving the sliding plate, wherein the first opening surface, the first frame, and the transparent window are positioned on the same line to visually inspect the interior of the boiler according to the left and right reciprocating motion of the sliding plate. To provide an inspection window of the boiler, characterized in that opening or closing.

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Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. First of all, in adding reference numerals to the components of each drawing, it should be noted that the same reference numerals are used as much as possible even if displayed on different drawings. In addition, in describing the present invention, when it is determined that the detailed description of the related well-known configuration or function may obscure the gist of the present invention, the detailed description thereof will be omitted.

Figure 3 is a perspective view of the boiler inspection window according to a preferred embodiment of the present invention, Figure 4 is a cross-sectional view of the boiler inspection window according to a preferred embodiment of the present invention.

Boiler inspection window 100 according to a preferred embodiment of the present invention is attached to the first opening surface 345 formed on the boiler outer wall 125, the window frame shape is attached to the outer peripheral surface of the first opening surface 345 A first frame 315, a first frame 315 and a fastening bolt 115, which are tightly fixed to each other, having a second opening surface 350 formed to communicate with the first opening surface 345, and having a hole 340 formed therein. Sliding sliding along the inner space formed by the second frame 330, the transparent window 335 sealing the second opening surface 350, the outer wall 125, the first frame 315 and the second frame 330 Between the brush 305, the sliding plate 300, and the second frame 330 provided at left and right ends of one surface of the sliding plate 300 facing the plate 300, the sliding plate 300, and the second frame 330. Is provided in but fixed to the top and bottom of the sliding plate 300, the spring 400, the spring 400 and the second pre Spring bar 310 inserted between the rim 330, the driving unit 325 for sliding the sliding plate 300 and the driving rod 320, the cooling air line 210 and the seal air line 205 do.

The sliding plate 300 is slid by the driving unit 325 and the driving rod 320 to open or close the first opening surface 345. In addition, the transparent window 335 and the first opening surface 345 are configured at the same position, when the sliding plate 300 opens the first opening surface 345, the interior of the boiler through the transparent window 335 It is configured to be seen. The brush 305 provided at the left and right ends of the sliding plate 300 in contact with the sliding plate 300 and the transparent window 335 is transparent window 335 by the flame inside the boiler when the sliding plate 300 slides. It serves to remove the soot formed in the.
On the other hand, as shown in the figure, one side of the spring 400 is fixed to the top and bottom of the sliding plate 300, and the other side of the spring 400 is fixed to the spring bar 310. The spring bar 310 and the spring 400 are elastic bodies provided between the sliding plate 300 and the second frame 330 or the transparent window 335 to closely adhere the sliding plate 300 in the direction of the outer wall 125 to the boiler. Prevents flames from leaking out from the inside.

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The transparent window 335 is a quartz glass having a high heat resistance to impart transparency, and has a deformation temperature of about 1120 ° C., which is vulnerable to flame, while the sliding plate 300 can use a high temperature material that can withstand a flame of about 1300 ° C. It will protect the transparent window 335 from the flame.

Between the first frame 315 and the boiler outer wall 125 is provided a seal air line 205 consisting of a hollow pipe facing the first opening surface 345 so that air is slid by the flame inside the boiler 300. To prevent heat from being transferred directly.

On the other hand, even if the flame is prevented from leaking between the sliding plate 300 and the first opening surface 345, because the pressure inside the boiler is higher than atmospheric pressure, some flame is between the sliding plate 300 and the first opening surface 345. It is discharged along the gap of the cooling air line 210 of the hollow pipe shape is installed to prevent this.

The cooling air supplied to the cooling air line 210 is supplied to the space formed by the first frame and the second frame 315, 330 to increase the internal pressure of the space, and thus prevent the flame from leaking to the outside. Instead, the sliding plate 300, the driving rod 320, the spring 400, the spring bar 310, and the transparent window 335 may be cooled.

As the driving unit 325 for moving the sliding plate 300, an air cylinder operated by air, a hydraulic cylinder operated by hydraulic pressure, an electrically operated motor, and a manual handle may be used.

Referring to the embodiment of the operation of the boiler inspection window 100, the boiler inspector or driver operates the drive unit 325 to move the sliding plate 300, the brush 305 attached to the sliding plate 300 Scrape the soot formed on the surface while passing through the transparent window 335.

The inspector or the driver directly observes the flame state inside the boiler with the eyes through the transparent window 335. In addition, the temperature of the flame can be directly measured by inserting a temperature sensor through the hole 340 to measure the temperature inside the boiler. Will be checked.

In order to protect the transparent window 335 or the like from the high temperature environment caused by the flame, the state of the flame is visually controlled while adjusting the flow rates of the seal air and the cooling air supplied to the seal air line 205 and the cooling air line 210. Check and insert the thermometer through the hole 340 to directly check the temperature of the flame.

Finally, the driving unit 325 is operated to position the sliding plate 300 to seal the first opening surface 345.

The boiler manager can check the flame state inside the boiler with the naked eye of the manager by sliding the sliding plate 300 in a state such that the flame is not ejected to the atmosphere, and inserting a thermometer through the hole 340. The temperature can be checked directly.

The above description is merely illustrative of the technical idea of the present invention, and those skilled in the art to which the present invention pertains may make various modifications and changes without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention but to describe the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The protection scope of the present invention should be interpreted by the following claims, and all technical ideas within the equivalent scope should be interpreted as being included in the scope of the present invention.

As described above, according to the present invention, by installing a sliding plate and a transparent window and sliding the sliding plate by a driving unit, the boiler flame window is identified without opening the boiler inspection window to the outside, and the temperature inside the boiler is measured through the hole. The effect is to check directly.

Claims (10)

In the inspection window for checking the interior of the boiler, An outer wall that forms the outside of the boiler and forms a first open surface; A first frame attached to an outer circumferential surface outside the first opening surface and having a window frame shape; A plate-shaped second frame fixed to the first frame and having a transparent window; A sliding plate reciprocating left and right in a space formed by the first frame and the second frame; And A driving rod and a driving unit for driving the sliding plate Including but not including the first opening surface, the first frame and the transparent window to be located on the same line to open or close the boiler to visually inspect the interior of the boiler according to the left and right reciprocating motion of the sliding plate Inspection window. The method of claim 1, A spring provided between the sliding plate and the second frame, the spring fixed to upper and lower ends of the sliding plate; And a spring bar inserted between the spring and the second frame, the spring bar being fixed to the spring. The method of claim 1, The inspection window of the boiler further comprises a seal air line for injecting air (Air) to the hollow pipe installed from the outside toward the first opening surface. The method of claim 1, Inspection window of the boiler further comprises a cooling air line for injecting air (Air) into the hollow pipe inserted into the space from the outside. The method of claim 1, The transparent window is the inspection window of the boiler, characterized in that the heat-resistant glass. The method of claim 1, The inspection window of the boiler, characterized in that the second frame is formed with a hole for checking the internal temperature of the boiler. The method of claim 1, And a brush for removing soot of the transparent window at left and right ends of one surface of the sliding plate in contact with the sliding plate and the transparent window. delete delete delete

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