KR20120012252A - Temperature acquisition apparatus and temperature acquisition system of power plants having the same - Google Patents

Abstract

PURPOSE: A temperature acquisition apparatus and a temperature acquisition system for a power plant therewith are provided to measure the temperature of exhaust gas flowing in a duct of each depth of the duct. CONSTITUTION: A temperature acquisition apparatus(100) comprises a probe(110), multiple connection pipes(120,130,140), and a temperature measuring device. The probe is formed in a hollow cylindrical shape. The connection pipes are formed inside the probe and have different heights from each other. The temperature measuring device is connected to the connection pipes and measures the temperature of gas flowing into the connection pipes.

Description

TEMPERATURE ACQUISITION APPARATUS AND TEMPERATURE ACQUISITION SYSTEM OF POWER PLANTS HAVING THE SAME

The present invention relates to a temperature acquisition device, specifically, the present invention relates to a temperature acquisition device for exhaust gas flowing in a power plant boiler.

In general, a combined cycle power plant uses a fuel such as natural gas or diesel fuel to power a gas turbine primarily, and passes the waste gas heat discharged from the gas turbine back to a waste heat recovery boiler to produce a second power source. Power is generated by driving a steam turbine.

Combined cycle power plant uses waste heat recovery boiler that recovers high temperature and high pressure steam by recovering hot combustion gas generated from gas turbine and gas turbine that produces electricity by burning fuel, and high temperature and high pressure steam discharged from waste heat recovery boiler. It is divided into steam turbines that produce electricity.

Combined cycle power plants use ducts to connect gas turbines and waste heat recovery boilers. The waste heat recovery boiler generates steam by using the heat of the exhaust gas, and delivers the generated steam to a steam turbine to produce power. That is, in power generation that generates power by using heat of exhaust gas, such as combined cycle power generation, the temperature of exhaust gas is important to generate power by using heat of exhaust gas.

In the conventional case, one temperature sensor was installed in the duct to measure the temperature of the exhaust gas. However, the exhaust gas has a different temperature depending on the depth flowing in the duct. Therefore, in the conventional case, a problem arises in that an accurate temperature of the exhaust gas flowing through the duct cannot be measured.

The present invention provides a temperature acquisition device capable of measuring the temperature of the exhaust gas for each depth of the duct through which the exhaust gas flows, and a temperature acquisition system for a power plant comprising the same.

The present invention also provides a temperature acquisition device that can be attached and detached from a duct through which exhaust gas flows, and a temperature acquisition system for a power plant comprising the same.

According to one aspect of the present invention, a temperature acquisition device for acquiring a temperature of a gas is provided.

According to one embodiment of the present invention, there is provided a temperature acquisition device for acquiring a temperature of a gas, comprising: a hollow cylindrical probe; A plurality of connection pipes formed inside the probe for each height of the probe; And a temperature measuring device connected to the connection pipe and measuring a temperature of the gas introduced into the connection pipe.

And, one side of the probe is formed with a plurality of withdrawal holes are formed with different heights.

In addition, one side of the connection pipe is bent and protrudes through the withdrawal hole.

On the other hand, the connecting pipe is formed parallel to the longitudinal direction of the probe, and protrudes from the probe.

And according to one aspect of the present invention, there is provided a power plant temperature acquisition system for acquiring the temperature of the exhaust gas in the power plant.

According to an embodiment of the present invention, a power plant temperature acquisition system for acquiring a temperature of exhaust gas in a power plant, comprising: a duct through which exhaust gas flows; And a temperature obtaining device coupled to one side of the duct and including a temperature measuring sensor measuring a temperature of the exhaust gas introduced into a plurality of connecting pipes having different lengths.

At this time, the temperature acquisition device, the plurality of connecting pipe is formed and the hollow cylindrical probe; And a plurality of drawing holes formed at different sides of the probe and passing through the plurality of connection pipes.

One connecting pipe among the plurality of connecting pipes is located at the center of the width direction of the duct.

In addition, one side of the connection pipe is bent to protrude from the probe.

On the other hand, the duct includes an insertion hole into which the temperature obtaining device is inserted.

At this time, the fixing means for fixing the temperature acquisition device is formed on one side of the duct, the coupling means corresponding to the fixing means is formed in the temperature acquisition device.

The temperature obtaining device further includes a leakage preventing cap formed on one side of the probe in the longitudinal direction and formed adjacent to the coupling means.

In addition, the temperature measuring sensor is formed on the outside of the leak-proof cap.

The temperature acquisition device and the power plant temperature acquisition system including the same according to an embodiment of the present invention can measure the temperature of the exhaust gas for each depth of the duct through which the exhaust gas flows.

In addition, the temperature acquisition device and the power plant temperature acquisition system including the same according to an embodiment of the present invention can obtain the accurate temperature of the exhaust gas, it is possible to improve the reliability of the temperature of the exhaust gas.

In addition, the temperature acquisition device and the power plant temperature acquisition system including the same according to an embodiment of the present invention can be easily detached from the duct flowing exhaust gas.

1 is a perspective view showing a temperature acquisition device according to an embodiment of the present invention.
FIG. 2 is a cross-sectional view of a temperature acquisition device taken along AA ′ shown in FIG. 1.
3 is a perspective view of a temperature acquisition device according to an embodiment of the present invention coupled to a duct.
4 is a cross-sectional view showing a temperature acquisition device and a duct cut along BB ′ shown in FIG. 3.
5 is a cross-sectional view showing a duct according to an embodiment of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The present invention is capable of various modifications and various embodiments, and specific embodiments are illustrated in the drawings and described in detail in the detailed description. However, this is not intended to limit the present invention to specific embodiments, it should be understood to include all transformations, equivalents, and substitutes included in the spirit and scope of the present invention. In the following description of the present invention, if it is determined that the detailed description of the related known technology may obscure the gist of the present invention, the detailed description thereof will be omitted.

The terms first, second, etc. may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another.

The terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting of the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this application, the terms "comprise" or "have" are intended to indicate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, and one or more other features. It is to be understood that the present invention does not exclude the possibility of the presence or the addition of numbers, steps, operations, components, components, or a combination thereof.

Hereinafter, an embodiment of a temperature acquisition device and a temperature acquisition system for a power plant including the same according to the present invention will be described in detail with reference to the accompanying drawings, in the description with reference to the accompanying drawings, the same or corresponding components are the same. The reference numerals will be given and overlapping description thereof will be omitted.

A temperature acquisition device according to an embodiment of the present invention will be described with reference to FIGS. 1 and 2.

1 is a perspective view showing a temperature acquisition device according to an embodiment of the present invention, Figure 2 is a cross-sectional view showing a temperature acquisition device taken along AA 'shown in FIG.

1 and 2, the temperature acquisition device 100 may measure the temperature of a gas according to a height of the probe 110, the first to third connecting pipes 120, 130, and 140, and the first to the first to third materials. And three temperature measuring sensors 210, 220, and 230.

The probe 110 is formed in a hollow cylindrical shape. The probes 110 have first to third withdrawal holes 150, 160, and 170. The shape of the cross section of the probe 110 is irrelevant as long as the first to third drawing holes 150, 160 and 170 are formed and the first to third connecting pipes 120, 130 and 140 may be formed. . For example, the cross section of the probe 110 may be formed in any one of a circle, an ellipse, and a polygon. The cross section of the probe 110 may be formed in a quadrangular shape as shown in FIG. 1.

Each of the first to third lead-out holes 150, 160, and 170 is formed to have a different height in the probe 110. That is, the first and second withdrawal holes 150 and 160 pass through one side of the probe 110 in the width direction. In addition, the third drawing hole 170 is formed under the probe 110. In this case, the positions at which the first to third withdrawal holes 150, 160 and 170 are formed in the probe 110 may be different depending on the depth of the pipe through which the gas flows and the number of withdrawal holes.

Herein, the third drawing hole 170 is described below, but is not limited thereto. The first drawing hole 170 is not limited thereto, and one side of the probe 110 may be formed like the first and second drawing holes 150 and 160. It may be formed penetrating in the width direction.

Coupling means is formed in the probe 110 to fix the temperature acquisition device 100. The coupling means includes first and second coupling flanges 260 and 265 and first and second coupling holes 280 and 285. The probe 110 is welded to fix the first and second coupling flanges 260 and 265 to the probe 110 to form first and second connectors 270 and 275.

Probe 110 is formed with a leak-proof cap 250 on one side in the longitudinal direction. That is, the leakage preventing cap 250 may be formed at the inlet side of the probe 110. Leakage prevention cap 250 may prevent the gas is discharged to the outside.

The first to third connection pipes 120, 130 and 140 are formed inside the probe 110 and have different lengths.

The first to third connection pipes 120, 130, and 140 are first to third temperature measuring sensors 210 and 220 to measure the temperature of the gas in the first to third temperature measuring sensors 210, 220, and 230. Gas, 230). That is, the gas introduced into one side of the first to third connection pipes 120, 130, and 140 flows to the first to third temperature measuring sensors 210, 220, and 230 connected to the other side.

One side of each of the first to third connection pipes 120, 130, and 140 is formed to protrude from the probe 110 through the first to third withdrawal holes 150, 160, and 170, and the other to the first to third connection pipes 120, 130, and 140. It is connected to each of the third temperature measuring sensor (210, 220, 230).

In this case, the first and second connection pipes 120 and 130 are bent to penetrate the first and second drawing holes 150 and 160. In addition, the third connection pipe 140 is formed parallel to the longitudinal direction of the probe 110 and penetrates through the third drawing hole 170.

Herein, the third connection pipe 140 is formed to be parallel to the probe 110, for example. However, the present invention is not limited thereto, and the third connection pipe 140 is bent in the same manner as the first and second connection pipes 120 and 130, and the third drawing hole ( 170 may be penetrated.

Here, the three connecting pipes will be described as an example, but the present invention is not limited thereto, and the number of connecting pipes is irrelevant if gas can be introduced for each height.

The first to third temperature measuring sensors 210, 220, and 230 are formed outside the probe 110. The first to third temperature measuring sensors 210, 220, and 230 are connected to the first to third connecting pipes 120, 130, and 140, respectively. Each of the first to third temperature measuring sensors 210, 220, and 230 measures a temperature of a gas flowing in each of the first to third connection pipes 120, 130, and 140.

Although the first to third temperature measuring sensors 210, 220, and 230 each measure the temperature of the gas flowing in each of the first to third connection pipes 120, 130, and 140, the present invention is not limited thereto. In addition, the first to third temperature measuring sensors 210, 220, and 230 may be connected to one temperature measuring sensor to measure the temperature of the gas.

A temperature acquisition system for a power plant according to an embodiment of the present invention will be described with reference to FIGS. 3 and 4.

3 is a perspective view of a temperature acquisition device according to an embodiment of the present invention coupled to the duct 300, and FIG. 4 is a cross-sectional view of the temperature acquisition device and the duct 300 cut along B-B 'shown in FIG. to be.

3 and 4, the power plant temperature acquisition system 400 includes a duct 300 and a temperature acquisition device 100.

The duct 300 flows the exhaust gas generated at the power plant. At this time, the exhaust gas exhibits a different temperature depending on the depth of the duct 300. The cross section of the duct 300 may be formed in a quadrangle as shown in FIG. 3. For example, the width of the duct 300 formed in the power plant boiler may be formed of 10 ~ 15m, the depth of 4 ~ 6m.

As shown in FIG. 5, the duct 300 has an insertion hole 350 into which the temperature obtaining device 100 is inserted. Since the insertion hole 350 is formed in the duct 300, the temperature acquisition device 100 may be easily attached and detached from the duct 300.

Fixing means are formed in the duct 300 to fix the temperature obtaining device 100. The fixing means fixes the temperature acquisition device 100 from the flow rate of the exhaust gas, and includes first and second fixing flanges 310 and 315 and first and second fixing holes 320 and 325.

Cross sections of the first and second fixing flanges 310 and 315 may be bent and formed as shown in FIGS. 4 and 5. The first and second fixing flanges 310 and 315 are formed to be spaced apart from the probe 110 by a predetermined interval. The reason why the first and second fixing flanges 310 and 315 are spaced apart from the probe 110 is because the probe 110 expands by the temperature of the exhaust gas, so that the duct 300 and the temperature obtaining device 100 may be coupled to each other. When you need free space.

Each of the first and second fixing holes 320 and 325 is formed in the first and second fixing flanges 310 and 315.

The temperature acquisition device 100 is inserted into the insertion hole 350 of the duct 300 to measure the temperature of the exhaust gas flowing through the duct 300. The temperature acquisition apparatus 100 includes a probe 110, a coupling means, first to third connection pipes 120, 130, and 140, and first to third temperature measurement sensors 210, 220, and 230. .

The probe 110 is formed in a hollow cylindrical shape. The probes 110 are formed with first to third withdrawal holes 150, 160, and 170 having different heights. The first to third withdrawal holes 150, 160 and 170 are formed at one side of the probe 110 facing the direction 50 in which the exhaust gas flows. The first drawing hole 150 is located at the upper side of the duct 300, the second drawing hole 160 is located at the lower side of the duct 300, and the third drawing hole 170 is formed at the duct 300. It is located on the lower side.

A portion of the probe 110 is inserted into the duct 300. That is, in order to measure the temperature of the exhaust gas flowing through the duct 300, the first to third withdrawal holes 150, 160, and 170 are inserted into the duct 300, and the coupling means and the temperature measuring device are connected to the duct 300. It is formed to protrude from.

The probe 110 is formed of a material resistant to corrosion and high sensitivity to withstand high temperature and high velocity exhaust gas. For example, the probe 110 may be formed of stainless steel, aluminum, or the like.

Coupling means are formed in the probe 110 to prevent the temperature obtaining device 100 from moving by the exhaust gas flowing in the duct 300. That is, the coupling means includes first and second coupling flanges 260 and 265 and first and second coupling holes 280 and 285 formed at both sides of the probe 110. The coupling means is formed at a position corresponding to the fixing means of the duct 300.

In order to fix the temperature acquisition device 100 and the duct 300, the first fastening screw 290 is formed of the first coupling hole 280 and the first fixing flange 310 formed in the first coupling flange 260. The first fastening hole 320 is fastened, and the second fastening screw 295 is the second fastening hole 285 formed in the second fastening flange 265 and the second fastening hole 325 formed in the second fastening flange 315. ) Is fastened. Accordingly, since the temperature acquisition device 100 and the duct 300 are coupled by the first and second fastening screws 290 and 295, the temperature acquisition device 100 does not move even if the exhaust gas flows rapidly.

The first to third connection pipes 120, 130 and 140 penetrate through the first to third withdrawal holes 150, 160 and 170 to protrude from the probe 110. The reason why the first to third connection pipes 120, 130, and 140 are formed to protrude is that the exhaust gas flowing through the duct 300 flows to the first to third temperature measuring sensors 210, 220, and 230. To do that.

A portion of the probe 110 is inserted into the first to third connection pipes 120, 130, and 140 so as to be positioned for each depth of the duct 300. At this time, the first connection pipe 120 is located on the upper side of the duct 300 to transfer the exhaust gas flowing from the upper side of the duct 300 to the first temperature measuring sensor 210. The second connection pipe 130 is positioned in the center of the duct 300 to transfer the exhaust gas flowing from the center side of the duct 300 to the second temperature measuring sensor 220. When the third connection pipe 140 is located at the lower side of the duct 300, the third connection pipe 140 transmits the exhaust gas flowing from the lower side of the duct 300 to the third temperature measuring sensor 230.

The first to third temperature measuring sensors 210, 220, and 230 are positioned adjacent to the coupling means and are formed outside the probe 110.

Each of the first to third temperature measuring sensors 210, 220, and 230 is connected to the first to third connecting pipes 120, 130, and 140 to measure the temperature of the exhaust gas. Specifically, the first temperature measuring sensor 210 receives the exhaust gas flowing in the upper side of the duct 300 from the first connection pipe 120 and measures the temperature of the exhaust gas flowing in the upper side. In addition, the second temperature measuring sensor 220 receives the exhaust gas flowing in the center side of the duct 300 from the second connection pipe 130 and measures the temperature of the exhaust gas flowing in the center side. The third temperature measuring sensor 230 receives the exhaust gas flowing in the lower side of the duct 300 from the third connection pipe 140 and measures the temperature of the exhaust gas flowing in the lower side.

The first to third temperature measuring sensors 210, 220, and 230 may transmit the measured temperature to an external device. For example, the external device may be a temperature management device and a storage device that manage the temperature of the duct 300. In this case, the temperature management device may determine the temperature of the exhaust gas flowing in the duct 300 by calculating an average value of the temperatures received from the first to third temperature measuring sensors 210, 220, and 230.

Although the above has been described with reference to a preferred embodiment of the present invention, those skilled in the art to which the present invention pertains without departing from the spirit and scope of the present invention as set forth in the claims below It will be appreciated that modifications and variations can be made.

100: temperature acquisition device
110: probe
120, 130, 140: connecting piping
150, 160, 170: withdrawal hole
210, 220, 230: Temperature measuring sensor
260, 265: mating flange
300: duct
310, 315: fixed flange

Claims (12)

In the temperature acquisition device for acquiring the temperature of the gas,
Hollow cylindrical probes;
A plurality of connection pipes formed inside the probe for each height of the probe; And
And a temperature measuring device connected to the connection pipe and measuring a temperature of the gas introduced into the connection pipe.
The method of claim 1,
The temperature acquisition device, characterized in that a plurality of withdrawal holes are formed on one side of the probe is different in height.
The method of claim 2,
One side of the connecting pipe is bent to protrude through the withdrawal hole, characterized in that the temperature acquisition device.
The method of claim 1,
The connecting pipe is formed in parallel with the longitudinal direction of the probe, the temperature acquisition device, characterized in that protruding from the probe.
In the temperature acquisition system for power plants for obtaining the temperature of the exhaust gas in the power plant,
Ducts through which exhaust gas flows; And
And a temperature obtaining device coupled to one side of the duct and including a temperature measuring sensor measuring a temperature of the exhaust gas introduced into a plurality of connecting pipes having different lengths.
6. The method of claim 5,
The temperature acquisition device,
A plurality of connecting pipes formed therein and having a hollow cylindrical probe; And
The temperature acquisition system for a power plant, characterized in that the height is formed on one side of the probe, a plurality of withdrawal holes through each of the plurality of connecting pipes.
6. The method of claim 5,
The temperature acquisition system for power plants of one of the said plurality of connection piping is located in the center of the width direction of the said duct.
The method of claim 6,
One side of the connection pipe is bent to protrude from the probe, the temperature acquisition system for a power plant.
6. The method of claim 5,
And the duct includes an insertion hole into which the temperature obtaining device is inserted.
6. The method of claim 5,
Fixing means for fixing the temperature acquisition device is formed on one side of the duct, and coupling means corresponding to the fixing means is formed in the temperature acquisition device.
The method of claim 10,
The temperature acquisition device,
And a leakage preventing cap formed on one side of the probe in the longitudinal direction and formed adjacent to the coupling means.
12. The method of claim 11,
The temperature measuring sensor is a temperature acquisition system for a power plant, characterized in that formed on the outside of the leak-proof cap.

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