KR100914704B1 - 3-port type connection pipe for gas piping and gas analysis system comprising the same - Google Patents

Abstract

The present invention relates to a gas pipe connection pipe, comprising: a three-port connection pipe for a gas pipe having a first port, a second port, and a third port, one end of which is located in the first port and the other end of which A first channel located at two ports; And a second passage having one end positioned in the first port and the other end positioned in the third port, wherein two flow paths separated from each other are formed therein. In addition, by providing a gas analysis system including the three-port type connection pipe for the gas pipe as described above, enabling the effective cleaning of the three-port connection pipe for the gas pipe itself, the gas analysis system gas analysis Gas that uses adsorbent gas or toxic gas as the sample gas by allowing sufficient cleaning effect by the cleaning gas (nitrogen, helium, etc.) to all areas where the sample gas is in contact with each other without being separated into component units before and after. Even in the case of an analysis, all components of the gas analysis system can be safely protected from corrosion, and contact with hands, etc. Even if it does, it can help to ensure that no harmful effects occur.

3-port type, gas analyzer, cleaning gas supply device, first euro, second euro

Description

3-port type connector for gas piping and gas analysis system including the same {3-PORT TYPE CONNECTION PIPE FOR GAS PIPING AND GAS ANALYSIS SYSTEM COMPRISING THE SAME}

1 is a view illustrating an example of a gas analysis process according to the prior art.

Figure 2 is a perspective view showing a three-port type connector for gas piping according to a preferred embodiment of the present invention,

3 is a cross-sectional view showing a three-port type connection pipe for gas piping according to a preferred embodiment of the present invention;

4 is a layout diagram showing a gas analysis system according to a preferred embodiment of the present invention;

5 is a perspective view showing a three-port type connector for gas piping applied to the gas analysis system according to a preferred embodiment of the present invention;

6 is a cross-sectional view partially illustrating a flow path during gas analysis in a three-port type connection pipe for gas piping coupled to a gas cylinder in a gas analysis system according to the present invention;

Figure 7 is a cross-sectional view partially illustrating a flow path during the gas analysis before and after washing in the three-port type connection pipe for gas piping coupled to the gas cylinder in the gas analysis system according to the present invention,

Figure 8 is a cross-sectional view showing a three-port type pipe for gas piping applied to the gas analysis system according to another embodiment of the present invention.

* Description of the symbols for the main parts of the drawings *

10: gas cylinder 13: inlet

20: gas analyzer 25, 35: pipe

40: gas pressure regulator 50: cleaning gas supply device

70: valve 100: 3-port type connector for gas piping

110: first port 115: hermetic flange

120: second port 130: third port

140: sealing fastening nut 145: locking jaw

210: first euro 220: second euro

230: temperature adjustable heating block

The present invention relates to a gas pipe connection pipe, and more particularly, to a gas pipe and a gas analysis system including the three-port type pipe for installation on the pipe connecting the various gas analysis device and the gas cylinder. .

1 is a view illustrating an example of a gas analysis process according to the prior art.

When a variety of information about the specific gas, such as component content, component ratio, suitability as a standard gas, the presence and absence of impurities, and the like, the various types of gas analysis device is performed.

In general, as shown in FIG. 1, the gas analysis is performed in a state in which a gas cylinder 10 filled with a sample gas to be analyzed is connected to a suitable gas analysis apparatus 20 by a pipe 30. Opening the on-off valve 11 provided in the (10) so that the sample gas flows into the gas analysis device 20, the gas analysis for the sample gas introduced from the gas analysis device 20 is performed Is performed. In addition, the inlet 13 of the gas cylinder 10 is generally equipped with a gas pressure regulator 40 to adjust the pressure of the sample gas discharged to an appropriate level, such as various accessories such as the gas analysis device 20 and the gas cylinder Gas analysis is performed in a state connected on the pipe (30) connecting the (10).

As described above, the gas analysis system including the gas analysis device 20 and the accessory equipment used for the gas analysis is not only configured for one-time analysis, but also for analyzing only one specific gas. This is generally the case. Therefore, after the analysis is completed, the sample gas to the internal flow path of the gas analysis device 20, the gas pressure regulator 40 and the pipe 30 connecting them, and the inlet 13 of the gas cylinder 10, etc. All parts in contact with the sample gas will need to be cleaned to ensure that no components remain. In particular, when the sample gas to be analyzed is a toxic gas, there is a risk of harmful effects on the human body, and in the case of an adsorbent gas, contact with the gas analyzer 20 and accessories in combination with moisture in the air The importance of cleaning will be even greater as the site can be rapidly corroded.

However, as shown in FIG. 1, in the gas analysis process according to the related art, there is a problem in that all parts of the gas analysis system which have been in contact with the sample gas are not easy to be completely and reliably cleaned. That is, in the cleaning process using, for example, a cleaning gas such as nitrogen or helium, all the accessory devices including the gas analyzer 20 and the gas pressure regulator 40 must be separated separately, and in this state, special equipment In order to remove impurities including residual sample gas and water by spraying nitrogen gas to the corresponding part by using the same method, in this way, all parts contacted with the sample gas are uniformly It is difficult to produce a sufficient cleaning effect. In other words, some parts may have a satisfactory cleaning effect by the cleaning gas, while others may have a slight cleaning effect by the cleaning gas. In this case, the partial cleaning state may be poor, which means that the sample gas used for the analysis may remain inside the gas analyzer 20 or the pipe 30, and is caused by the residual sample gas. That means you are exposed to the risk of corrosion. Furthermore, the presence of residual sample gas may cause inaccurate analysis results in subsequent gas analysis, and the occurrence of corrosion may cause the analytical equipment to no longer be used for analytical purposes.

As invented to solve the problems of the prior art as described above,

The present invention is to provide a three-port type connection pipe for the gas pipe is installed on the pipe connecting the gas cylinder and various gas analyzers to effectively clean all the parts in contact with the sample gas in a non-separated state The purpose.

In addition, another object of the present invention is to provide a gas analysis system including a three-port type connection pipe for gas pipes that can effectively clean all the parts in contact with the sample gas in a non-separated state.

The present invention for achieving the above object,

In the three-port type connector for gas piping having a first port, a second port and a third port,

A first channel having one end located in the first port and the other end located in the second port; And

One end is located in the first port, and the other end is a second flow path located in the third port; Provides a three-port type connection pipe for a gas pipe, characterized in that the two channels are separated from each other formed therein; do.

One end of the second flow path is formed to surround one end of the first flow path, and one end of the first flow path in the first port is positioned inside the one end of the second flow path.

In addition, the first port is coupled in a partially inserted state in the inlet of the gas cylinder, and has a sealing flange protruding radially on the outer peripheral surface thereof,

A female screw engaged with the male screw formed on the outer circumferential surface of the gas inlet is formed on the inner circumferential surface, and has a locking projection protruding toward the center from one side of the inner circumferential surface so as to press the sealing flange in the direction of the gas cylinder when tightening. It characterized in that it further comprises a sealed fastening nut disposed to surround the.

On the other hand, the present invention,

In the gas analysis system for analyzing the sample gas stored in the gas cylinder,

Gas analyzer;

Cleaning gas supply device; And

A first port coupled to the inlet of the gas cylinder, a second port connected to the gas analysis device by a pipe, and a third port connected to a cleaning gas supply device by a pipe;

There are two isolated flow paths including a first flow path at one end of which is located at the first port and the other end at a second port, and a second flow path at which one end is located at the first port and the other end of which is located at the third port. It provides a gas analysis system comprising a; three-port type connection pipe for the gas pipe formed therein.

And a gas pressure regulator coupled to the second port of the three-port type connection pipe for gas piping, for adjusting the pressure of the sample gas supplied to the gas analyzer.

The apparatus may further include a valve coupled to the third port of the three-port type connecting pipe for gas piping to open or shut off the second flow path connected to the cleaning gas supply device.

In addition, it is coupled to surround the third port of the three-port type connection pipe for the gas pipe, further comprising a temperature controlable heating block for heating the cleaning gas supplied from the cleaning gas supply device during cleaning It is characterized by.

In addition, the gas pressure regulator is coupled to the second port of the three-port type connection pipe for the gas pipe, and adjusts the pressure of the sample gas supplied to the gas analyzer; And

And a valve coupled to the third port of the three-port type connecting pipe for gas pipe, to open or shut off the second flow path connected to the cleaning gas supply device.

And a gas pressure regulator coupled to the second port of the three-port type connection pipe for gas piping, for adjusting the pressure of the sample gas supplied to the gas analyzer; And

It is coupled to surround the third port of the three-port type connecting pipe for the gas pipe, characterized in that it further comprises a temperature adjustable heating block for heating the cleaning gas supplied from the cleaning gas supply device during the cleaning It is done.

In addition, the valve is coupled to the third port of the three-port type connection pipe for the gas pipe, the valve for opening or blocking the second flow path connected to the cleaning gas supply device; And

It is coupled to surround the third port of the three-port type connecting pipe for the gas pipe, characterized in that it further comprises a temperature adjustable heating block for heating the cleaning gas supplied from the cleaning gas supply device during the cleaning It is done.

Further, a gas pressure regulator coupled to the second port of the three-port type connecting pipe for gas piping, for adjusting the pressure of the sample gas supplied to the gas analyzer;

A valve which is coupled to the third port of the three-port type connection pipe for gas piping and opens or shuts off the second flow path connected to the cleaning gas supply device; And

It is coupled to surround the third port of the three-port type connecting pipe for the gas pipe, characterized in that it further comprises a temperature adjustable heating block for heating the cleaning gas supplied from the cleaning gas supply device during the cleaning It is done.

In the above, one end of the second flow path is formed to surround one end of the first flow path, and one end of the first flow path in the first port is characterized in that located inside the one end of the second flow path. .

In addition, the first port is connected in a state of being partially inserted into the inlet of the gas cylinder, and has a sealing flange protruding radially on the outer peripheral surface thereof,

A female screw engaged with the male screw formed on the outer circumferential surface of the gas inlet is formed on the inner circumferential surface, and has a locking projection protruding toward the center from one side of the inner circumferential surface so as to press the sealing flange in the direction of the gas cylinder when tightening. It characterized in that it further comprises a hermetic fastening nut disposed to partially surround the.

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

Figure 2 is a perspective view showing a three-port type connector for a gas pipe according to a preferred embodiment of the present invention, Figure 3 is a cross-sectional view showing a three-port type connector for a gas pipe according to a preferred embodiment of the present invention. to be.

The three-port type connection pipe 100 for gas piping according to the preferred embodiment of the present invention, as shown in Figures 2 and 3, the first port 110, the second port 120 and the third port 130 and two flow paths 210 and 220 formed therein.

The two flow paths are formed to be separated from each other, and the first flow path 210 has one end 211 located at the first port 110 and the other end 213 located at the second port 120. . In addition, one end 221 of the second flow path 220 is located in the first port 110, and the other end 223 is located in the third port 130.

In the first port 110 in which one ends 211 and 221 of the two flow paths 210 and 220 are located together, one end 221 of the second flow path 220 is connected to one end of the first flow path 210. 211). Therefore, one end 211 of the first flow path 210 in the first port 110 is positioned inside the one end 221 of the second flow path 220, and furthermore, is arranged in a concentric shape with the same center. It is desirable.

As can be seen with reference to FIGS. 6 and 7, the first port 110 is coupled in a partially inserted state into the injection hole 13 of the gas cylinder 10. In addition, the first port 110 has a sealing flange 115 protruding radially from the outer peripheral surface portion a certain distance from the end. Therefore, gas leakage does not occur at the connection portion between the gas cylinder 10 and the three-port type connection pipe 100 for gas piping through the compression by the sealing flange 115 during the fastening using the sealed fastening nut 140 which will be described later. To keep it sealed.

The general gas cylinder 10 is provided with a male screw for pipe connection to an outer circumferential surface portion of the injection hole 13 provided therein. In addition, the first port 110 as described above is coupled to the injection port 13 of the gas cylinder 10 by a screw coupling method. Therefore, for the coupling of the screw coupling method, the three-port type connecting pipe 100 for gas piping according to the present invention includes a hermetic fastening nut 140 disposed to surround the outer circumferential surface of the first port 110.

The hermetic fastening nut 140 has a female screw 141 formed on the inner circumferential surface of the cylinder to engage the male screw formed on the outer circumferential surface of the gas cylinder. In addition, the locking projection 115 has a locking projection 145 protruding toward the center from one side of the inner circumferential surface so as to press the sealing flange 115 in the direction of the gas cylinder 10. As the locking jaw 145 is provided, the locking jaw 145 presses the sealing flange 115 at the time of fastening, so that it is possible to stably maintain the closed state at the inlet of the gas cylinder, and consequently to the gas cylinder 10 and the present invention. The gas tight state at the connection between the three-port type connection pipe 100 according to it will also be able to maintain a stable.

The three-port type connection pipe 100 for gas piping according to the present invention as described above is a variety of gas movement path through the three ports 110, 120, 130 and two flow paths 210, 220 are provided to provide.

Specifically, assuming that the first port 110 of the three-port type connection pipe 100 for gas piping according to the present invention is coupled to the inlet 13 of the gas cylinder 10, first, the third port Gas movement using the first flow path 210 via the first port 110 and the second port 120 is possible from the gas cylinder 10 in a state where the 130 is blocked. In addition, the gas may be moved using the second flow path 220 via the first port 110 and the third port 130 from the gas cylinder 10 while the second port 120 is blocked. In addition, the second port 130, the first port 110, the injection port 13 of the gas cylinder, the first port 110 and the third port ( It is possible to move the gas sequentially passing through 130, that is, the first passage 210 and the second passage 220 in sequence, and such a gas movement may be possible in the reverse direction.

The three-port type connection pipe for gas piping according to the present invention as described above can be used for the purpose of configuring a gas analysis system for analyzing the sample gas stored in the gas cylinder as described below.

Figure 4 is a layout diagram showing a gas analysis system according to a preferred embodiment of the present invention, Figure 5 is a perspective view showing a three-port type pipe for the gas pipe applied to the gas analysis system of Figure 4, 6 is a cross-sectional view partially illustrating a flow path during gas analysis in the three-port type connection pipe for gas piping coupled to the gas cylinder in the gas analysis system according to the present invention, Figure 7 is a gas analysis system according to the present invention FIG. 8 is a cross-sectional view partially illustrating a flow path during gas analysis before and after washing in a three-port type connection pipe for gas piping coupled with a gas cylinder, and FIG. 8 is a gas applied to a gas analysis system according to another exemplary embodiment of the present invention. A cross-sectional view showing a three-port type connector for piping.

Gas analysis system according to a preferred embodiment of the present invention, as shown in Figures 4 to 7, the gas analysis device 20, the cleaning gas supply device 50, and the gas pipe 3 as described above A port type connector 100.

Specifically, the first port 110 of the three-port type connection pipe 100 for gas piping is coupled to the inlet 13 of the gas cylinder 10, the second port 120 is a gas by the pipe 25 It is connected to the analysis device 20, and the third port 130 is connected to the cleaning gas supply device 50 by a pipe 35. The first passage 210 has one end 211 positioned at the first port 110 and the other end 213 of the two passages isolated from each other provided in the three-port type connection pipe 110 for gas piping. Located in the second port 120 is a flow path for the gas flow between the gas cylinder 10 and the gas analysis device 120, the second flow path 220 has one end 221 is connected to the first port 110 The other end 223 is positioned in the third port 130 to become a flow path through which the gas moves between the gas cylinder 10 and the cleaning gas supply device 50.

On the other hand, the gas analysis system according to the present invention, one side is connected to the second port 120 of the three-port type connection pipe 100 for gas piping and the other side is connected to the gas analysis device 20, gas pressure regulator 40 may include. The gas pressure regulator 40 is connected to the second port 120 of the three-port type connection pipe 100 for gas piping using an appropriate joint member 41, and likewise the gas using an appropriate joint member 43. It is connected to the pipe 25 is connected to the analysis device (20). Mounting of such a gas pressure regulator 40 is optional, it can be said that the mounting can be determined as necessary. When the gas pressure regulator 40 is mounted as described above, the sample gas supplied from the gas cylinder 10 is transferred from the gas cylinder 10 to the first flow path 210 and the gas pressure regulator of the 3-port type connection pipe 100 for gas piping. As it is supplied to the gas analyzer 20 via 40, it is possible to maintain a proper pressure for gas analysis without causing an overload on the gas analyzer 20.

On the other hand, the gas analysis system according to the present invention, one side is connected to the third port 130 of the three-port type connecting pipe 100 for the gas pipe and the other side is connected to the gas supply device for cleaning (50), It further includes a valve 70 for opening or blocking the second flow path 220 connecting the first port 110 and the third port 130. The valve 70 has a second flow path 220 which is not used for supply of the sample gas when the sample gas is supplied from the gas cylinder 10 to the gas analyzing apparatus 20 for gas analysis in the gas analyzing apparatus 20. It plays a role to block). Therefore, it is possible to prevent unnecessary waste of sample gas as the sample gas is supplied to the inner space of the pipe 35 connected to the washing gas supply device 50, and the washing by the washing gas supply device 50 is performed. The second passage 220 may be used only at the time.

On the other hand, the gas analysis system according to the present invention, as shown in Figure 8, is coupled to partially surround the third port 120 of the three-port type connection pipe 100 for gas piping, washing during cleaning It may include a temperature controllable heating block 230 for heating the cleaning gas supplied from the molten gas supply device (50). The temperature controllable heating block 230 is formed to control the temperature so that the cleaning gas supplied from the cleaning gas supply device 50 can be heated to an appropriate temperature, thereby further increasing the moisture remaining in the pipe. Make it easy to remove.

Hereinafter, a gas analysis process using the gas analysis system according to the present invention as described above.

First, the three-port type connection for gas piping connected to the cleaning gas supply device 50 by adjusting the valve 70 connected to the third port 130 of the three-port type connecting pipe 100 for gas piping. As shown in FIG. 6, a sample gas to be subjected to gas analysis, as shown in FIG. 6, with the second flow path 220 formed between the first port 110 and the third port 130 of the pipe 100 blocked. The injection port 13 of the filled gas cylinder 10 is opened by adjusting the opening / closing valve 11 so that the sample gas passes through the first port 110 and the second port of the 3-port connection pipe 100 for gas piping. By allowing the gas flow analysis device 20 to flow through the first flow path 210 and the gas pressure regulator 40 connecting between the ports 120, the gas analysis is performed.

When the gas analysis is completed, as shown in FIG. 7, the opening / closing valve 11 of the gas cylinder 10 is adjusted to block the inlet 13 of the gas cylinder 10, and then the 3-port type connection pipe for gas piping. The second flow path 220 of the three-port type connecting pipe 100 for gas piping connected to the washing gas supply device 50 by adjusting the valve 70 connected to the third port 130 of the (100) In the open state, the high pressure washing gas used for washing by operating the washing gas supply device 50 is a gas cylinder through the second passage 220 of the 3-port type connecting pipe 100 for gas piping. In order to be introduced into the inlet 13 of the (10), the cleaning gas introduced into the inlet 13 of the gas cylinder 10 is then the first flow path 210 of the three-port type connection pipe 100 for gas piping And the gas pressure regulator 40 to be introduced into the gas analysis device 20. As such, the cleaning gas supplied from the cleaning gas supply device 50 primarily washes the area around the inlet 13 of the gas cylinder 10 which comes into contact with the sample gas during gas analysis, and then again with the sample gas. The first passage 210, the gas pressure regulator 40, and the internal space of the gas analyzer 20 of the three-port type connection pipe 100 for gas piping which are in contact with each other are sequentially washed. At this time, as shown in Figure 8, if provided with a temperature-controllable heating block 230, it may be possible to more effectively wash, such as to more easily remove the moisture in the washing process.

In this manner, the washing is performed by the cleaning gas for a suitable time to obtain a sufficient cleaning effect, and then the first port of the inlet 13 of the gas cylinder 10 and the three-port type connection pipe 100 for gas piping. By releasing the coupling between the 110, the gas cylinder 10 is separated from the gas analysis system according to the present invention. In this state, the gas analysis system does not need additional cleaning, and thus, there is no need to separate the components.

In summary, the gas analysis system according to the present invention includes a three-port type connection pipe 100 for gas piping, thereby providing a cleaning gas supply by the cleaning gas supply device 50 without removing components. Through gas analysis, all the areas that come into contact with the sample gas can be effectively cleaned.

Furthermore, the gas analysis system as described above can continuously perform gas analysis using various types of sample gases by replacing only the gas cylinders, and even if such continuous gas analysis is performed, It is possible to improve the reliability of the analytical results by not remaining other kinds of sample gases analyzed and by generating no impurities due to corrosion.

By providing a three-port type connection pipe for a gas pipe and a gas analysis system including the same according to the present invention as described above, the present invention can not only effectively wash the three-port type pipe for the gas pipe itself, but also The gas analysis system containing the adsorbent gas or the toxic gas is used as the sample gas by allowing the cleaning gas to have sufficient washing effect by all the regions in contact with the sample gas in the state where the gas analysis system is not separated into components before and after gas analysis. Even in the case of gas analysis, all components of the gas analysis system can be protected from corrosion and the harmful effects on humans should not occur even if touched by hand.

While the invention has been shown and described with respect to specific embodiments thereof, those skilled in the art will recognize that various changes and modifications can be made without departing from the spirit and scope of the invention as set forth in the appended claims. Anyone can easily know.

Claims (13)

delete delete delete In the gas analysis system for analyzing the sample gas stored in the gas cylinder, Gas analyzer; Cleaning gas supply device; And A first port coupled to the inlet of the gas cylinder, a second port connected to the gas analysis device by a pipe, and a third port connected to a cleaning gas supply device by a pipe; There are two isolated flow paths including a first flow path at one end of which is located at the first port and the other end at a second port, and a second flow path at which one end is located at the first port and the other end of which is located at the third port. Gas analysis system comprising a; three-port type connection pipe for the gas pipe formed therein. The method of claim 4, wherein And a gas pressure regulator coupled to the second port of the three-port type connection pipe for gas piping, the gas pressure regulator controlling a pressure of a sample gas supplied to the gas analyzer. The method of claim 4, wherein And a valve coupled to the third port of the three-port type connection pipe for gas piping, to open or shut off the second flow path connected to the cleaning gas supply device. The method of claim 4, wherein It is coupled to surround the third port of the three-port type connecting pipe for the gas pipe, characterized in that it further comprises a temperature adjustable heating block for heating the cleaning gas supplied from the cleaning gas supply device during the cleaning Gas analysis system. The method of claim 4, wherein A gas pressure regulator coupled to the second port of the three-port type connection pipe for gas piping, for adjusting a pressure of a sample gas supplied to the gas analyzer; And A gas analysis system, further comprising: a valve coupled to the third port of the three-port type connection pipe for gas piping, to open or shut off the second flow path connected to the cleaning gas supply device. . The method of claim 4, wherein A gas pressure regulator coupled to the second port of the three-port type connection pipe for gas piping, for adjusting a pressure of a sample gas supplied to the gas analyzer; And It is coupled to surround the third port of the three-port type connecting pipe for the gas pipe, characterized in that it further comprises a temperature adjustable heating block for heating the cleaning gas supplied from the cleaning gas supply device during the cleaning Gas analysis system. The method of claim 4, wherein A valve which is coupled to the third port of the three-port type connection pipe for gas piping and opens or shuts off the second flow path connected to the cleaning gas supply device; And It is coupled to surround the third port of the three-port type connecting pipe for the gas pipe, characterized in that it further comprises a temperature adjustable heating block for heating the cleaning gas supplied from the cleaning gas supply device during the cleaning Gas analysis system. The method of claim 4, wherein A gas pressure regulator coupled to the second port of the three-port type connection pipe for gas piping, for adjusting a pressure of a sample gas supplied to the gas analyzer; A valve which is coupled to the third port of the three-port type connection pipe for gas piping and opens or shuts off the second flow path connected to the cleaning gas supply device; And It is coupled to surround the third port of the three-port type connecting pipe for the gas pipe, characterized in that it further comprises a temperature adjustable heating block for heating the cleaning gas supplied from the cleaning gas supply device during the cleaning Gas analysis system. The method according to any one of claims 4 to 11, wherein One end of the second flow path is formed to surround one end of the first flow path, wherein one end of the first flow path in the first port is located inside the one end of the second flow path . The method of claim 12, The first port is connected in a state of being partially inserted into the inlet of the gas cylinder, and has a sealed flange protruding radially on the outer peripheral surface thereof, A female screw engaged with the male screw formed on the outer circumferential surface of the gas inlet port is formed on the inner circumferential surface, and has a locking jaw protruding toward the center from one side of the inner circumferential surface so as to press the sealing flange in the gas cylinder direction when fastened. Gas analysis system, characterized in that it further comprises a sealed fastening nut disposed to partially surround the outer peripheral surface.

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