CN211425996U - Gas detection sample reserving system - Google Patents
Gas detection sample reserving system Download PDFInfo
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- CN211425996U CN211425996U CN201922340293.9U CN201922340293U CN211425996U CN 211425996 U CN211425996 U CN 211425996U CN 201922340293 U CN201922340293 U CN 201922340293U CN 211425996 U CN211425996 U CN 211425996U
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Abstract
The utility model relates to a gaseous detection stays appearance system, including gaseous sampling subassembly: the sampling tube comprises a first connecting end and a second connecting end; gas sample retention assembly: the sample collection device comprises a sample retention bottle, a first sample retention pipe and a second sample retention pipe, wherein one end of the first sample retention pipe is communicated with the sample retention bottle, and the other end of the first sample retention pipe is provided with a third connecting end; one end of the second sample reserving pipe is communicated with the sample reserving bottle, and the other end of the second sample reserving pipe is provided with a fourth connecting end; a gas detection assembly: the detection device comprises a detection tube and a detection connection unit, wherein one end of the detection tube is communicated with one end of the detection connection unit, the other end of the detection tube is provided with a fifth connection end, and the other end of the detection connection unit is provided with a sixth connection end. The utility model discloses avoided the air to the influence that detects, realized short-term test, can avoid low temperature gas to receive the influence of moisture, improved the repeatability of testing result and reproducibility, stayed the uniformity of appearance and product impurity level.
Description
Technical Field
The utility model relates to a gaseous detection stays a kind system.
Background
When trace oxygen, nitrogen and moisture in gas are detected at present, air can enter a sampling system in the process of connecting a sample by using the conventional sampling system, and a large amount of oxygen, nitrogen and moisture in the air can be brought into the system together by the air; in the process of detecting trace moisture, the sample gas needs to be continuously introduced into the trace moisture detector, so that the sample gas is consumed all the time, and the longer the detection time is, the more the sample gas is consumed. Some products are tested with samples of low temperature, which easily condense the moisture introduced by air into the system, and it is basically impossible to completely eliminate the interference of the introduced moisture. In addition, the repeatability and reproducibility of the detection result are poor, and the remained sample after detection has no representativeness, namely the remained sample is inconsistent with the impurity level of the detected product.
Therefore, how to avoid the influence of air, how to rapidly detect to save the consumption of sample gas, how to overcome the influence of low-temperature gas by moisture, how to improve the repeatability and reproducibility of detection results, and how to achieve the consistency of sample retention and product impurity level is the improvement direction of the current sampling system.
Disclosure of Invention
The utility model aims at providing a gaseous detection stays a kind system.
In order to achieve the above purpose, the utility model adopts the technical scheme that:
a gas detection sample retention system, comprising:
a gas sampling assembly: the sampling tube comprises a sampling tube, wherein the sampling tube is provided with a first connecting end and a second connecting end;
gas sample retention assembly: the sample collection device comprises a sample retention bottle, a first sample retention pipe and a second sample retention pipe, wherein one end of the first sample retention pipe is communicated with the sample retention bottle, and the other end of the first sample retention pipe is provided with a third connecting end; one end of the second sample reserving pipe is communicated with the sample reserving bottle, and the other end of the second sample reserving pipe is provided with a fourth connecting end;
a gas detection assembly: the detection device comprises a detection tube and a detection connection unit, wherein one end of the detection tube is communicated with one end of the detection connection unit, the other end of the detection tube is provided with a fifth connection end, and the other end of the detection connection unit is provided with a sixth connection end.
Preferably, when the gas sampling assembly, the gas sample retention assembly and the gas detection assembly are connected: the second connecting end is connected with the third connecting end; the fourth connecting end is connected with the fifth connecting end.
Preferably, the gas sampling assembly further comprises a discharge tube, one end of which is in communication with the sampling tube.
Further preferably, the discharge pipe is provided with a first control valve.
Preferably, the first sample reserving pipe and the second sample reserving pipe are provided with a second control valve.
Preferably, the detection connection unit includes a detection connection pipe, one end of the detection connection pipe is communicated with one end of the detection pipe, and the other end of the detection connection pipe has the sixth connection end.
Further preferably, a third control valve is arranged on the detection connecting pipe.
Preferably, one or more detection connection units are arranged.
Further preferably, the number of the detection connecting units is three, and one end of the detection tube and one end of the three detection connecting units are communicated through a four-way connecting piece.
Preferably, the system further comprises a dry purge gas source and a detection instrument, wherein the detection instrument comprises a trace oxygen, nitrogen and moisture detection instrument, and the dry purge gas source and the detection instrument are connected with the sixth connecting end.
Because of the application of the technical scheme, compared with the prior art, the utility model has the following advantages:
the utility model discloses avoided the air to the influence that detects, realized short-term test, can avoid low temperature gas to receive the influence of moisture, improved the repeatability of testing result and reproducibility, stayed the uniformity of appearance and product impurity level.
Drawings
Fig. 1 is a schematic structural diagram of the present embodiment.
Wherein: 1. a gas sampling assembly; 10. a sampling tube; 11. a discharge pipe; 12. a first control valve; 2. a gas sample retention assembly; 20. a sample retention bottle; 21. a first sample retention tube; 22. a second sample retention tube; 23. a second control valve; 3. a gas detection assembly; 30. a detection tube; 31. detecting a connecting pipe; 32. and a third control valve.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
A gas detection sample retention system as shown in fig. 1 includes a gas sampling assembly 1, a gas sample retention assembly 2 and a gas detection assembly 3. Specifically, the method comprises the following steps:
the gas sampling assembly 1 comprises a sampling tube 10 and a discharge tube 11, wherein the sampling tube 10 is provided with a first connecting end a and a second connecting end b, the length of the sampling tube 10 is determined according to the situation, and the first connecting end a is connected with an interface of a sample to be detected. One end of the discharge pipe 11 is connected to the sampling pipe 10, the discharge pipe 11 is provided with a first control valve 12, and the discharge pipe 11 is used for discharge, and when the sample gas is connected to the discharge pipe with a dedicated discharge valve, this part can be omitted.
The gas sample reserving assembly 2 comprises a sample reserving bottle 20, a first sample reserving pipe 21 and a second sample reserving pipe 22, the working pressure of the sample reserving bottle 20 is not lower than the product pressure and the purge gas pressure, one end of the first sample reserving pipe 21 is communicated with the sample reserving bottle 20, and the other end of the first sample reserving pipe 21 is provided with a third connecting end c; one end of the second sample reserving pipe 22 is communicated with the sample reserving bottle 20, the other end of the second sample reserving pipe 22 is provided with a fourth connecting end d, and the first sample reserving pipe 21 and the second sample reserving pipe 22 are provided with a second control valve 23.
The gas detection assembly 3 comprises a detection pipe 30 and a detection connection unit, one end of the detection pipe 30 is communicated with one end of the detection connection unit, the other end of the detection pipe 30 is provided with a fifth connection end e, and the other end of the detection connection unit is provided with a sixth connection end f. Wherein: the detection connection unit comprises a detection connection pipe 31, one end of the detection connection pipe 31 is communicated with one end of the detection pipe 30, the other end of the detection connection pipe 31 is provided with a sixth connection end f, and a third control valve 32 is arranged on the detection connection pipe 31. One or more detection connection units are arranged, in this embodiment, three detection connection units are taken as an example, one end of the detection tube 30 and one end of each detection connection unit are communicated through a four-way connection piece (of course, if there are two detection connection units, one end of the detection tube 30 and one end of each detection connection unit are communicated through a three-way connection piece, and if there is one detection connection unit, one end of the detection tube 30 and one end of each detection connection unit are communicated through a two-way connection piece, which is determined according to the number of the actual detection connection units).
When gas sampling subassembly 1, gas keep a kind subassembly 2 and gas detection subassembly 3 connect: the second connecting end b is connected with the third connecting end c; the fourth connection d is connected to the fifth connection e (it is equally effective to connect the second connection b to the fourth connection d; and to connect the third connection c to the fifth connection e).
The following specifically explains the working process of this embodiment:
1) connecting the sixth connecting end f to a dry purging gas source with proper pressure and incapable of reacting with the sample to be detected, such as dry helium, connecting the fifth connecting end e and the fourth connecting end d, connecting the third connecting end c and the second connecting end b, connecting the first connecting end a with the product to be detected,
2) the third control valve 32, the two second control valves 23 and the first control valve 12 (or a special discharge valve of the sample) are opened in sequence,
3) the dry purging gas source is opened, the purging gas passes through the gas detection component 3, the gas sample reserving component 2 and the gas sampling component 1 in sequence to drive off the air and moisture in the system, the purging time is determined according to the actual situation,
4) the dry purge gas source is closed, the third control valve 32 and the first control valve 12 (or a special discharge valve of the sample) are closed, the connection between the sixth connecting end f and the dry purge gas source is disconnected,
5) opening the sample gas to make the sample gas pass through the gas sampling component 1 and the gas sample reserving component 2 and reach the gas detection component 3, slowly opening the third control valve 32, using the sample gas to blow the gas system for a proper time,
6) closing the third control valve 32, connecting the detection instrument with the sixth connecting end f, slowly opening the third control valve 32 to start detecting the sample,
7) after the sample detection is finished, the third control valve 32 and the two second control valves 23 are closed, the sample gas is closed,
8) the connection between the detection instrument and the sixth connecting end f is disconnected, the third control valve 32 is slowly opened to release the pressure of the gas detection component 3, the first control valve 12 (or a special discharge valve carried by the sample) is opened to release the pressure of the gas sampling component 1, the connection between the sample gas and the first connecting end a is disconnected,
9) and the fifth connecting end e and the fourth connecting end d are disconnected, the third connecting end c and the second connecting end b are connected, the sample bottle mark is kept properly, and the sample is kept.
The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable people skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.
Claims (10)
1. A gas detection sample retention system is characterized in that: the method comprises the following steps:
a gas sampling assembly: the sampling tube comprises a sampling tube, wherein the sampling tube is provided with a first connecting end and a second connecting end;
gas sample retention assembly: the sample collection device comprises a sample retention bottle, a first sample retention pipe and a second sample retention pipe, wherein one end of the first sample retention pipe is communicated with the sample retention bottle, and the other end of the first sample retention pipe is provided with a third connecting end; one end of the second sample reserving pipe is communicated with the sample reserving bottle, and the other end of the second sample reserving pipe is provided with a fourth connecting end;
a gas detection assembly: the detection device comprises a detection tube and a detection connection unit, wherein one end of the detection tube is communicated with one end of the detection connection unit, the other end of the detection tube is provided with a fifth connection end, and the other end of the detection connection unit is provided with a sixth connection end.
2. A gas detection sample retention system according to claim 1, wherein: when gas sampling subassembly, gaseous subassembly and the gaseous detection subassembly of keeping a sample connect: the second connecting end is connected with the third connecting end; the fourth connecting end is connected with the fifth connecting end.
3. A gas detection sample retention system according to claim 1, wherein: the gas sampling assembly further comprises a discharge pipe, and one end of the discharge pipe is communicated with the sampling pipe.
4. A gas detection sample retention system according to claim 3, wherein: the discharge pipe is provided with a first control valve.
5. A gas detection sample retention system according to claim 1, wherein: the first sample reserving pipe and the second sample reserving pipe are provided with a second control valve.
6. A gas detection sample retention system according to claim 1, wherein: the detection connecting unit comprises a detection connecting pipe, one end of the detection connecting pipe is communicated with one end of the detection pipe, and the other end of the detection connecting pipe is provided with the sixth connecting end.
7. A gas detection sample retention system according to claim 6, wherein: and a third control valve is arranged on the detection connecting pipe.
8. A gas detection sample retention system according to claim 1, wherein: one or more detection connecting units are arranged.
9. A gas detection sample retention system according to claim 8, wherein: the detection device is characterized in that the number of the detection connecting units is three, one end of the detection tube and one end of the three detection connecting units are communicated through a four-way connecting piece.
10. A gas detection sample retention system according to claim 1, wherein: the system also comprises a dry purging gas source and a detection instrument, wherein the detection instrument comprises a trace oxygen, nitrogen and moisture detection instrument, and the dry purging gas source and the detection instrument are connected with the sixth connecting end.
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| CN201922340293.9U CN211425996U (en) | 2019-12-24 | 2019-12-24 | Gas detection sample reserving system |
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| CN201922340293.9U CN211425996U (en) | 2019-12-24 | 2019-12-24 | Gas detection sample reserving system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112611609A (en) * | 2020-12-04 | 2021-04-06 | 沪东中华造船(集团)有限公司 | Helium concentration sampling detection method for helium test of sublayer insulating layer of liquid cargo tank of LNG ship |
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2019
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112611609A (en) * | 2020-12-04 | 2021-04-06 | 沪东中华造船(集团)有限公司 | Helium concentration sampling detection method for helium test of sublayer insulating layer of liquid cargo tank of LNG ship |
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