CN214334595U - Fine particle sampling device in high-pressure gas - Google Patents
Fine particle sampling device in high-pressure gas Download PDFInfo
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- CN214334595U CN214334595U CN202120651192.8U CN202120651192U CN214334595U CN 214334595 U CN214334595 U CN 214334595U CN 202120651192 U CN202120651192 U CN 202120651192U CN 214334595 U CN214334595 U CN 214334595U
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Abstract
The utility model discloses a sampling device for fine particles in high-pressure gas, which comprises a collecting bottle and a filter flask, wherein a filtering device is arranged between the bottle mouth of the collecting bottle and the bottle mouth of the filter flask; an inlet is formed in one side of the collecting bottle and connected with a gas guide pipe; one side of the suction bottle is provided with an outlet which is communicated with a suction port, and the suction port is communicated with a gas flowmeter. The utility model discloses use easy operation, the sampling is quick, and the sample is collected on the filter membrane, is convenient for follow-up carry on granularity, scanning electron microscope, clear up the back and carry out multiple qualitative or quantitative analysis and detection such as elemental determination.
Description
Technical Field
The utility model relates to a gas sampling device field particularly, relates to a fine particles thing sampling device among high-pressure gas.
Background
For the sampling analysis of fine particles in high-pressure gas, widely applied to the field of gas delivery, for example, chinese patent publication No. CN102998233B discloses a method suitable for online detection of particles in a high-pressure gas pipeline, which uses a device to perform online detection of particles in a high-pressure gas pipeline, the device comprising: an online detection unit; the online detection unit comprises a main sampling nozzle and a flow distributor which are sequentially connected in series through a pipeline; the front end of the main sampling nozzle extends into a high-pressure gas pipeline to be detected, and the tail end of the main sampling nozzle is connected with a gas inlet of the flow distributor in series; the flow distributor is provided with a cavity, the front side of the cavity is provided with a gas inlet, the rear side of the cavity is provided with two gas outlets to divide a main pipeline and a bypass pipeline, the main pipeline is sequentially connected with a secondary sampling nozzle, an online particulate matter particle size spectrometer and a first mass flow controller in series, and the bypass pipeline is connected with a second mass flow controller in series; after the main sampling nozzle samples from the high-pressure gas pipeline, the sampled gas sample enters the cavity from the gas inlet of the flow distributor through diffusion and is discharged through the secondary sampling nozzle and the bypass outlet respectively; the online detection device comprises a flow distributor, a main sampling nozzle, a main gas sampling nozzle, a flow sampling valve, a gas sampling valve and a gas sampling valve, wherein the main sampling nozzle of the online detection unit is used for collecting gas samples from a high-pressure gas pipeline, and the collected gas samples respectively enter a main path and a bypass after entering a cavity through diffusion from a gas inlet of the flow distributor; the concentration and the particle size of the particles in the gas sample collected by the secondary sampling nozzle in the main path are measured by using the online particle size spectrometer, the gas flow entering the online particle size spectrometer of the particles is measured and controlled by using the first mass flow controller, and the flow of the redundant gas entering the bypass is measured and controlled by using the second mass flow controller, so that the requirements of the flow of the online particle size spectrometer and the requirements of constant-speed sampling of the online detection unit are met. The device can realize particulate matter on-line measuring, and the result visual detection is rapid.
However, this device is limited to detecting the dust concentration and particle size, and cannot perform other items of detection and analysis on the sampled sample.
Also, chinese patent CN111504732A discloses a high pressure gas particulate sampling device, which includes a high pressure gas filtering chamber, and during operation, the device can purge residual hydrogen with nitrogen through a displacer interface, so as to avoid mixing of hydrogen and air, achieve the concentration critical value of combustion and explosion, and achieve higher safety; in addition, the filter membrane can be used as a bypass, so that the pressure difference before and after the filter membrane can be balanced, and the risk of breakage of the filter membrane is reduced; in addition, the high-pressure gas particulate matter sampling device can be used for trapping particulate matters in the normal hydrogen filling process of a hydrogen energy automobile, and the sampling process completely accords with the real filling process, so that the test result is completely consistent with the real situation, and the real validity of data is ensured.
However, the device needs to introduce nitrogen for purging, and the operation is complicated.
SUMMERY OF THE UTILITY MODEL
The utility model discloses to prior art's shortcoming, provide a fine particles thing sampling device among high-pressure gas, solved the defect of above-mentioned technique.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a fine particles thing sampling device in high-pressure gas which characterized in that: the device comprises a collecting bottle and a filter flask, wherein a filtering device is arranged between the bottle mouth of the collecting bottle and the bottle mouth of the filter flask;
an inlet is formed in one side of the collecting bottle and connected with a gas guide pipe; one side of the suction bottle is provided with an outlet which is communicated with a suction port, and the suction port is communicated with a gas flowmeter.
According to the optimized technical scheme, the filtering device comprises a filtering shell, wherein the filtering shell is funnel-shaped; the outer wall of the lower end of the filtering shell is provided with an external thread, the inner side of the bottle opening of the collecting bottle is provided with an internal thread, and the internal thread and the external thread are connected together in a threaded connection mode; the upper part of the filtering shell is connected with the bottle mouth of the filter flask through a hollow fixed plug; and a microporous filter membrane is arranged between the bottle mouth of the collecting bottle and the filter shell.
According to the optimized technical scheme, a hollow fixing plug is arranged between the gas guide pipe and an inlet of the collecting bottle.
According to the optimized technical scheme, a porous filter plate is arranged in the middle of the filter shell.
Owing to adopted above-mentioned technique, compare with prior art, the beneficial effects of the utility model are that:
the utility model discloses use easy operation, the sampling is quick, and the sample is collected on the filter membrane, is convenient for follow-up carry on granularity, scanning electron microscope, clear up the back and carry out multiple qualitative or quantitative analysis and detection such as elemental determination.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
As shown in figure 1, the sampling device for fine particles in high-pressure gas comprises a collecting bottle 2 and a filter flask 4, wherein a filtering device is arranged between the bottle mouth of the collecting bottle 2 and the bottle mouth of the filter flask 4. The filtering device comprises a filtering shell 3, and the filtering shell 3 is funnel-shaped. The outer wall of the lower end of the filter shell 3 is provided with an external thread, the inner side of the bottle opening of the collecting bottle is provided with an internal thread, and the internal thread and the external thread are connected together in a threaded connection mode. The upper part of the filtering shell 3 is connected with the bottle mouth of the filter flask through a hollow fixed plug 6. And a microporous filter membrane is arranged between the bottle mouth of the collecting bottle 2 and the filter shell 3. The middle part of the filter shell 3 is provided with a porous filter plate. The microporous filter membrane corresponds to the porous filter plate and has the same area.
One side of the collecting bottle is provided with an inlet 7, and the inlet 7 is connected with the gas conduit 1. A hollow fixed plug 5 is arranged between the gas conduit and the inlet of the collecting bottle. Typically, the length of the gas conduit 1 is greater than the height of the collection bottle. An outlet is formed in one side of the suction bottle 4 and communicated with a suction port 8, and the suction port 8 is communicated with a gas flowmeter 9.
The use method of the product of the embodiment comprises the following steps:
(1) the device collects particles in a high-pressure ventilation mode, pure water which is about 2/3 and does not contain fine particles is filled in a collection bottle before the device is used, the collection bottle is kept to be placed below and a filter flask is placed above, and the device is assembled into a whole.
(2) The gas to be measured enters the collecting bottle through the gas conduit, is upwards overflowed through pure water and generated bubbles in the collecting bottle, enters the suction filtration bottle after passing through the microporous filter membrane and the porous filter plate, and is discharged from the suction filtration port to be led to the gas flowmeter. The flow of the gas to be detected through the sampling device is controlled by adjusting the gas flowmeter, the time of the gas passing through the sampling device is fixed, and variables such as fine particulate matter sampling parameters in the gas are controlled.
(3) And disconnecting the high-pressure gas from the gas conduit, disconnecting the suction filter port from the gas flowmeter, and turning the device upside down. The filter flask was now down and the collection flask was up.
(4) And (3) connecting the suction filtration bottle with a vacuum pump, enabling the solution containing the fine particulate matters in the collection bottle to pass through the microporous filter membrane and the filter and then enter the suction filtration bottle, and collecting the fine particulate matters on the microporous filter membrane.
(5) The microporous filter membrane is taken out, and then various qualitative or quantitative analysis detections such as granularity, scanning electron microscope, element determination and the like can be carried out on the fine particles after digestion.
The utility model discloses use easy operation, the sampling is quick, and the sample is collected on the filter membrane, is convenient for follow-up carry on granularity, scanning electron microscope, clear up the back and carry out multiple qualitative or quantitative analysis and detection such as elemental determination.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", 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 to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (4)
1. The utility model provides a fine particles thing sampling device in high-pressure gas which characterized in that: the device comprises a collecting bottle and a filter flask, wherein a filtering device is arranged between the bottle mouth of the collecting bottle and the bottle mouth of the filter flask;
an inlet is formed in one side of the collecting bottle and connected with a gas guide pipe; one side of the suction bottle is provided with an outlet which is communicated with a suction port, and the suction port is communicated with a gas flowmeter.
2. The device for sampling fine particulate matter in high-pressure gas according to claim 1, wherein: the filtering device comprises a filtering shell, and the filtering shell is funnel-shaped; the outer wall of the lower end of the filtering shell is provided with an external thread, the inner side of the bottle mouth of the collecting bottle is provided with an internal thread, and the internal thread and the external thread are connected together in a threaded connection mode; the upper part of the filtering shell is connected with the bottle mouth of the filter flask through a hollow fixed plug; and a microporous filter membrane is arranged between the bottle mouth of the collecting bottle and the filter shell.
3. The device for sampling fine particulate matter in high-pressure gas according to claim 2, wherein: a hollow fixed plug is arranged between the gas conduit and the inlet of the collecting bottle.
4. The device for sampling fine particulate matter in high-pressure gas according to claim 3, wherein: and a porous filter plate is arranged in the middle of the filter shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120651192.8U CN214334595U (en) | 2021-03-30 | 2021-03-30 | Fine particle sampling device in high-pressure gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120651192.8U CN214334595U (en) | 2021-03-30 | 2021-03-30 | Fine particle sampling device in high-pressure gas |
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| Publication Number | Publication Date |
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| CN214334595U true CN214334595U (en) | 2021-10-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202120651192.8U Active CN214334595U (en) | 2021-03-30 | 2021-03-30 | Fine particle sampling device in high-pressure gas |
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| CN (1) | CN214334595U (en) |
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2021
- 2021-03-30 CN CN202120651192.8U patent/CN214334595U/en active Active
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