CN218444677U - Pipeline industrial gas airtight sampling structure - Google Patents
Pipeline industrial gas airtight sampling structure Download PDFInfo
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- CN218444677U CN218444677U CN202222204469.XU CN202222204469U CN218444677U CN 218444677 U CN218444677 U CN 218444677U CN 202222204469 U CN202222204469 U CN 202222204469U CN 218444677 U CN218444677 U CN 218444677U
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Abstract
The utility model discloses a pipeline industrial gas closed sampling structure, which comprises a transverse gas main pipe and a U-shaped sampling pipe; the gas main pipe is provided with a narrowing part, the tail end of the sampling pipe is communicated with the narrowing part of the gas main pipe, and the front end of the sampling pipe penetrates through the pipe wall of a normal caliber pipe section at the upper part of the narrowing part of the gas main pipe in a sealing way, is positioned in the center of the gas main pipe and turns to face the direction of gas flow; the rear straight pipe section of the sampling pipe is provided with a transverse sampling branch pipe, the sampling branch pipe is provided with a sampling branch pipe valve, and the port of the sampling branch pipe is used for connecting a sampling device. The utility model discloses a difficult point that the technique need be diffused to the industrial gas sampling, designs an industrial gas airtight structure, can realize the airtight sampling of industrial gas and save the advantage of sampling time, improves the security of sampling operation, and this technique is easily realized at structure and easy operation, and reliable, convenient to use, and the practicality is strong, can be applicable to the design and the analyst sampling detection of iron and steel enterprise industrial gas sampling pipe.
Description
Technical Field
The utility model relates to an industrial gas sampling device structure.
Background
At present, the industrial gas sampling method generally needs to diffuse the gas in the sampling pipe into the air for 10 to 20 minutes, which is not safe. The specific sampling method comprises the following steps: the sampling pipe is led to the ground from the main gas pipe, the sampling pipe generally has the length of 10 meters, when sampling is not carried out at ordinary times, gas in the sampling pipe is in a static state, and when sampling is needed, a valve at the tail end of the sampling pipe is opened to fully diffuse the gas for 10 to 20 minutes, so that the gas in the sampling pipe is consistent with the gas in the main pipe. The industrial coal gas is a byproduct of steel, contains high-concentration toxic gases such as CO and hydrogen sulfide, is diffused into the air, and has certain potential safety hazard.
Disclosure of Invention
The utility model aims to overcome the defects of the prior art and provide a pipeline industrial gas closed sampling structure.
In order to realize the purpose, the utility model discloses a technical scheme be:
a pipeline industrial gas closed sampling structure comprises a transverse gas main pipe and a U-shaped sampling pipe; the gas main pipe is provided with a narrowing part, the tail end of the sampling pipe is communicated with the narrowing part of the gas main pipe, and the front end of the sampling pipe penetrates through the pipe wall of a normal-caliber pipe section at the upper stream of the narrowing part of the gas main pipe in a sealing manner, is positioned in the center of the gas main pipe and turns to face the direction of gas flow; a rear straight pipe section of the sampling pipe is provided with a transverse sampling branch pipe, the sampling branch pipe is provided with a sampling branch pipe valve, and a port of the sampling branch pipe is used for connecting a sampling device; the sampling branch valve is normally closed and is opened during sampling.
Furthermore, a sampling pipe air inlet valve and a sampling pipe air outlet valve are respectively arranged at positions of the sampling pipe close to the straight pipe sections of the front end and the rear end, and the sampling pipe air outlet valve is positioned behind the connecting part of the sampling branch pipe and the sampling pipe; the sampling pipe air inlet valve and the sampling pipe air outlet valve are normally opened, and the sampling pipe air outlet valve is closed during sampling.
Furthermore, a downward drainage branch pipe is arranged at the arc-shaped bottom of the sampling pipe, a drainage valve is arranged on the drainage branch pipe, and the drainage branch pipe and the drainage valve are used for discharging water accumulated in the sampling pipe; the drain valve is normally closed and opens upon draining.
Furthermore, a transverse steam branch pipe is arranged on the straight pipe section of the sampling pipe behind the sampling pipe air inlet valve of the sampling pipe and in front of the connection part of the drainage branch pipe and the sampling pipe, and a steam branch pipe valve is arranged on the steam branch pipe; the port of the steam branch pipe is used for connecting steam to purge the sampling pipe; the steam manifold valve is normally closed and opens during steam purging. When the sampling pipe is blocked by impurities in the coal gas, the steam branch pipe is connected with a steam source, a steam branch pipe valve and a water discharge valve are opened, and the sampling pipe is swept by steam.
The principle of this structure has utilized the venturi effect, utilizes the gas to be responsible for and goes up different pipe diameters, and the pressure in the narrow mouth department is little, and the pressure of wide mouth department is big to form the pressure differential, guarantee that sampling pipe anterior segment and rear end have pressure differential, the gas in the sampling pipe flows in real time, when sampling, need not carry out the gas and diffuse, realizes airtight sampling.
The beneficial effects of the utility model are that: the utility model discloses a difficult point that the technique need be diffused to the industrial gas sampling, designs an industrial gas airtight structure, can realize the airtight sampling of industrial gas and save the advantage of sampling time, improves the security of sampling operation, and this technique is easily realized at structure and easy operation, and reliable, convenient to use, and the practicality is strong, can be applicable to the design and the analyst sampling detection of iron and steel enterprise industrial gas sampling pipe.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
number designation in the figures: 1-a main gas pipe, 2-a sampling pipe, 3-a sampling pipe air inlet valve, 4-a steam branch pipe valve, 5-a water discharge valve, 6-a sampling branch pipe valve, 7-a sampling pipe air outlet valve, 8-a steam branch pipe, 9-a water discharge branch pipe, 10-a sampling branch pipe, 11-a narrowing part of the main gas pipe, 12-the front end of the sampling pipe and 13-the tail end of the sampling pipe.
Detailed Description
The present invention will be described in further detail with reference to the following embodiments, as shown in fig. 1, a sampling structure for gas sealing in pipeline industry comprises a gas main pipe 1 and a U-shaped sampling pipe 2; the gas main pipe is provided with a narrowing part 11, the tail end 13 of the sampling pipe is communicated with the narrowing part 11 of the gas main pipe, and the front end 12 of the sampling pipe hermetically penetrates through the pipe wall of a normal-caliber pipe section at the upper part of the narrowing part 11 of the gas main pipe, is positioned in the center of the gas main pipe 1 and turns to face the direction of gas flow; a rear straight pipe section of the sampling pipe 2 is provided with a transverse sampling branch pipe 10, the sampling branch pipe 10 is provided with a sampling branch pipe valve 6, and a port of the sampling branch pipe 10 is used for connecting a sampling device; the sampling manifold valve 6 is normally closed and is opened at the time of sampling. A sampling pipe inlet valve 3 and a sampling pipe outlet valve 7 are respectively arranged at the positions of the sampling pipe 2, which are close to the front end 12 and the rear end 13, of the straight pipe section, and the sampling pipe outlet valve 7 is positioned behind the connecting part of the sampling branch pipe 10 and the sampling pipe 2; the sampling pipe air inlet valve 3 and the sampling pipe air outlet valve 7 are normally opened, and the sampling pipe air outlet valve 7 is closed during sampling. A downward drainage branch pipe 9 is arranged at the arc-shaped bottom of the sampling pipe 2, a drainage valve 5 is arranged on the drainage branch pipe 9, and the drainage branch pipe 9 and the drainage valve 5 are used for discharging water accumulated in the sampling pipe 2; the drain valve 5 is normally closed and is opened when draining. A transverse steam branch pipe 8 is arranged on a straight pipe section of the sampling pipe 2 behind the sampling pipe air inlet valve 3 and in front of a connecting part of the water drainage branch pipe 9 and the sampling pipe 2, and a steam branch pipe valve 4 is arranged on the steam branch pipe 8; the port of the steam branch pipe 8 is used for connecting steam to purge the sampling pipe 2; the steam manifold valve 4 is normally closed and is opened during steam purging. When the sampling pipe 2 is blocked by impurities in the coal gas, the steam branch pipe 8 is connected with a steam source, the steam branch pipe valve 4 and the water drain valve 5 are opened, and the sampling pipe 2 is swept by steam.
The sampling process of the closed sampling structure comprises the following steps: sampling pipe air inlet valve 3 and sampling pipe air outlet valve 7 keep normally open, and by the venturi effect, the pressure of sampling pipe front end 12 can be greater than the pressure of end 13, and coal gas can circulate in 2 pipelines of sampling pipe, makes the coal gas component of sampling pipe 2 and coal gas in being responsible for 1 unanimously in real time to need not diffuse during the coal gas sampling. When gas sampling is carried out, the drainage valve 5 is opened for drainage, the drainage valve 5 and the sampling pipe gas outlet valve 7 are closed after drainage is finished, the pipe orifice of the sampling branch pipe 10 is connected with a sampling device, and at the moment, the sampling branch pipe valve 6 is opened for sampling.
The above description is only for the purpose of illustrating the technical solutions of the present invention, and the simple modification or equivalent replacement of the technical solutions of the present invention by those of ordinary skill in the art does not depart from the spirit and scope of the technical solutions of the present invention.
Claims (4)
1. A pipeline industrial gas closed sampling structure is characterized in that: comprises a transverse gas main pipe and a U-shaped sampling pipe; the gas main pipe is provided with a narrowing part, the tail end of the sampling pipe is communicated with the narrowing part of the gas main pipe, and the front end of the sampling pipe penetrates through the pipe wall of a normal-caliber pipe section at the upper stream of the narrowing part of the gas main pipe in a sealing manner, is positioned in the center of the gas main pipe and turns to face the direction of gas flow; a rear straight pipe section of the sampling pipe is provided with a transverse sampling branch pipe, the sampling branch pipe is provided with a sampling branch pipe valve, and a port of the sampling branch pipe is used for connecting a sampling device; the sampling branch valve is normally closed and is opened during sampling.
2. The pipeline industrial gas closed sampling structure of claim 1, wherein: a sampling pipe air inlet valve and a sampling pipe air outlet valve are respectively arranged at the positions of the straight pipe sections of the sampling pipe close to the front end and the rear end, and the sampling pipe air outlet valve is positioned behind the connecting part of the sampling branch pipe and the sampling pipe; the sampling pipe air inlet valve and the sampling pipe air outlet valve are normally opened, and the sampling pipe air outlet valve is closed during sampling.
3. The airtight sampling structure of pipeline industry gas of claim 2, characterized in that: a downward drainage branch pipe is arranged at the arc-shaped bottom of the sampling pipe, a drainage valve is arranged on the drainage branch pipe, and the drainage branch pipe and the drainage valve are used for discharging water accumulated in the sampling pipe; the drain valve is normally closed and opens upon draining.
4. The airtight sampling structure of pipeline industry gas of claim 3, characterized in that: a transverse steam branch pipe is arranged on a straight pipe section behind a sampling pipe air inlet valve of the sampling pipe and in front of a connection part of the drainage branch pipe and the sampling pipe, and a steam branch pipe valve is arranged on the steam branch pipe; the port of the steam branch pipe is used for connecting steam to purge the sampling pipe; the steam manifold valve is normally closed and opens during steam purging.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222204469.XU CN218444677U (en) | 2022-08-22 | 2022-08-22 | Pipeline industrial gas airtight sampling structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222204469.XU CN218444677U (en) | 2022-08-22 | 2022-08-22 | Pipeline industrial gas airtight sampling structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218444677U true CN218444677U (en) | 2023-02-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222204469.XU Active CN218444677U (en) | 2022-08-22 | 2022-08-22 | Pipeline industrial gas airtight sampling structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218444677U (en) |
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2022
- 2022-08-22 CN CN202222204469.XU patent/CN218444677U/en active Active
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