CN108982169B - Gas sampling bottle and use method thereof - Google Patents
Gas sampling bottle and use method thereof Download PDFInfo
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- CN108982169B CN108982169B CN201810510826.0A CN201810510826A CN108982169B CN 108982169 B CN108982169 B CN 108982169B CN 201810510826 A CN201810510826 A CN 201810510826A CN 108982169 B CN108982169 B CN 108982169B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/2202—Devices for withdrawing samples in the gaseous state involving separation of sample components during sampling
- G01N1/2214—Devices for withdrawing samples in the gaseous state involving separation of sample components during sampling by sorption
- G01N2001/2217—Devices for withdrawing samples in the gaseous state involving separation of sample components during sampling by sorption using a liquid
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Abstract
The invention relates to the technical field of gas sampling, and provides a gas sampling bottle and a use method thereof, wherein the gas sampling bottle comprises: the bottle comprises a bottle body, an inner cover which forms an inner cavity with the bottle body, a one-way valve which is used for allowing a gas sample to enter the inner cavity when the gas sample is acquired, a straight-through air tap which is used for discharging liquid in the inner cavity when the gas sample is acquired, a rubber sleeve which is used for sealing the straight-through air tap and an outer cover which is covered on the bottle body; the one-way valve and the straight-through air tap are both arranged on the inner cover, and an outer cavity for accommodating the one-way valve and the straight-through air tap is formed after the outer cover is covered with the bottle body; the one-way valve comprises a straight-through one-way valve and a diaphragm one-way valve, the outlet end of the diaphragm one-way valve is communicated with the inner cavity, and the inlet end of the diaphragm one-way valve is connected with the outlet end of the straight-through one-way valve. The invention can realize the isolation of the gas sample in the bottle and the external air, and ensure the high fidelity of the gas sample.
Description
Technical Field
The invention belongs to the technical field of gas sampling, and particularly relates to a gas sampling bottle and a use method thereof.
Background
In the context of global warming and environmental pollution, world energy structures are undergoing a deep-field revolution, and natural gas will gradually dominate energy consumption. At present, researches on natural gas (especially unconventional natural gas) are in progress, and reliable gas samples are obtained on the premise of performing basic researches on natural gas component analysis, cause discrimination, maturity measurement and the like, so that a favorable foundation can be laid for further research works such as physicochemical property analysis, migration and storage research, resource potential and availability evaluation and the like.
At present, the gas sampling bottle is mainly composed of a bottle body and a bottle cover, the bottle cover is made of a silicon rubber sealing gasket, and a part of rubber plugs for the sampling bottle are used for replacing the bottle cover. The gas sampling bottle has poor air tightness, and the purity of the sample can be influenced to a certain extent, especially the sample placed for a long time is influenced more.
Disclosure of Invention
In view of the above, the embodiment of the invention provides a gas sampling bottle and a use method thereof, so as to solve the problem of poor air tightness of the gas sampling bottle in the prior art.
A first aspect of an embodiment of the present invention provides a gas sampling bottle comprising: the bottle comprises a bottle body, an inner cover which forms an inner cavity with the bottle body, a one-way valve which is used for allowing a gas sample to enter the inner cavity when the gas sample is acquired, a straight-through air tap which is used for discharging liquid in the inner cavity when the gas sample is acquired, a rubber sleeve which is used for sealing the straight-through air tap and an outer cover which is covered on the bottle body;
the one-way valve and the straight-through air tap are both arranged on the inner cover, and an outer cavity for accommodating the one-way valve and the straight-through air tap is formed after the outer cover is covered with the bottle body;
the one-way valve comprises a straight-through one-way valve and a diaphragm one-way valve, the outlet end of the diaphragm one-way valve is communicated with the inner cavity, and the inlet end of the diaphragm one-way valve is connected with the outlet end of the straight-through one-way valve.
Optionally, the bottle comprises an insulating layer.
Optionally, the gas sampling bottle further comprises a first sealing ring arranged at the joint of the inner cover and the through air tap and a second sealing ring arranged at the joint of the inner cover and the bottle body.
Optionally, the gas sampling bottle further comprises a connecting device connected with the inlet end of the straight-through one-way valve, and the connecting device is used for connecting an air inlet pipe matched with the straight-through one-way valve when collecting the gas sample.
Optionally, the hollow part of the straight-through air faucet is cylindrical, and the outer shape of the straight-through air faucet is cone.
Optionally, the aperture of the straight through air tap is 1.5 cm.
Optionally, the bottle body, the inner cover, the straight-through air tap and the outer cover are all made of stainless steel.
Optionally, the one-way valve is made of polyurethane.
Optionally, the outer cap is screwed with the bottle body.
A second aspect of the embodiment of the present invention provides a method for using the gas sampling bottle, including:
before collecting a gas sample, opening an outer cover, opening a rubber sleeve, and filling saturated brine into the inner cavity of the bottle body through a straight-through air tap;
when a gas sample is collected, an air inlet pipe matched with the straight-through one-way valve is connected with the straight-through one-way valve;
keeping the end of the inner cover of the gas sampling bottle downward, allowing the gas sample to pass through the straight-through one-way valve under the action of external force, opening the diaphragm of the diaphragm one-way valve, entering the inner cavity of the bottle body, and simultaneously allowing saturated brine to be discharged through the straight-through air tap;
after the gas sample is collected, the air inlet pipe is pulled out, and the rubber sleeve is sleeved on the straight-through air tap, at the moment, partial saturated salt water is reserved in the bottle body;
covering the outer cover, and keeping the end of the outer cover of the gas sampling bottle downward;
when the gas sample needs to be taken out, the outer cover is opened, and the rubber sleeve on the straight-through air tap is removed;
extracting a gas sample through the straight-through air tap by using a sampling needle;
after the extraction is finished, the rubber sleeve is sleeved again, the outer cover is covered, and the end where the outer cover of the gas sampling bottle is positioned is kept downward.
Compared with the prior art, the embodiment of the invention has the beneficial effects that: the embodiment of the invention provides a gas sampling bottle, which comprises: the bottle comprises a bottle body, an inner cover which forms an inner cavity with the bottle body, a one-way valve which is used for allowing a gas sample to enter the inner cavity when the gas sample is acquired, a straight-through air tap which is used for discharging liquid in the inner cavity when the gas sample is acquired, a rubber sleeve which is used for sealing the straight-through air tap and an outer cover which is covered on the bottle body; the one-way valve and the straight-through air tap are both arranged on the inner cover, and an outer cavity for accommodating the one-way valve and the straight-through air tap is formed after the outer cover is covered with the bottle body; the one-way valve comprises a straight-through one-way valve and a diaphragm one-way valve, the outlet end of the diaphragm one-way valve is communicated with the inner cavity, and the inlet end of the diaphragm one-way valve is connected with the outlet end of the straight-through one-way valve. The bottle body, the inner cover and the one-way valve of the gas sampling bottle provided by the embodiment of the invention comprise the straight-through one-way valve, the diaphragm one-way valve, the straight-through air tap and the rubber sleeve to form a closed structure, so that the problem of poor air tightness of the existing gas sampling bottle can be solved, the isolation between a gas sample in the bottle and external air can be realized, and the high fidelity of the gas sample is ensured. In addition, the gas sampling bottle also comprises an outer cover, and the outer cover enables the gas sampling bottle to be convenient to put upside down.
Drawings
FIG. 1 is a schematic diagram of a gas sampling bottle according to an embodiment of the present invention;
FIG. 2 is a schematic diagram showing an internal structure of a gas sampling bottle according to an embodiment of the present invention;
FIG. 3 is a flow chart of a method for using a gas sampling bottle according to an embodiment of the invention.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.
In the description of the present invention, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present invention and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
Referring to fig. 1 and fig. 2 together, fig. 1 shows a schematic structure of a gas sampling bottle 1 according to an embodiment of the invention, and fig. 2 shows a schematic structure of a gas sampling bottle according to an embodiment of the invention. The gas sampling bottle provided by the embodiment of the invention will now be described. The gas sampling bottle 1 includes: the bottle comprises a bottle body 101, an inner cover 102 forming an inner cavity with the bottle body 101, a one-way valve 103 for allowing a gas sample to enter the inner cavity when the gas sample is acquired, a straight-through air tap 104 for discharging liquid in the inner cavity when the gas sample is acquired, a rubber sleeve 105 for sealing the straight-through air tap and an outer cover 106 covering the bottle body;
the one-way valve 103 and the straight-through air tap 104 are arranged on the inner cover 102, and an outer cavity for accommodating the one-way valve 103 and the straight-through air tap 104 is formed after the outer cover 106 is covered with the bottle body 101;
the check valve 103 includes a straight-through check valve 1031 and a diaphragm check valve 1032, an outlet end of the diaphragm check valve 1032 being in communication with the lumen, an inlet end of the diaphragm check valve 1032 being connected to an outlet end of the straight-through check valve 1031.
In embodiments of the invention, the liquid in the lumen may be saturated saline.
In the embodiment of the invention, the bottle body 101, the inner cover 102 and the one-way valve 103 comprise the straight-through one-way valve 1031, the diaphragm one-way valve 1032, the straight-through air tap 104 and the rubber sleeve 105 to form a closed structure, so that the air tightness of the gas sampling bottle 1 is ensured, the isolation between a gas sample in the bottle and external air can be realized, and the high fidelity of the gas sample is ensured. In addition, the gas sampling bottle includes an outer cap 106, the outer cap 106 facilitating the pouring of the gas sampling bottle.
As yet another embodiment of the present invention, referring to fig. 2, the bottle 101 includes a thermal insulation layer 107.
In the embodiment of the invention, the heat insulation layer 107 is a light material with small heat conductivity, and has the advantages of flame retardance, heat insulation, impermeability, strong sealing property and the like. The heat preservation 107 can play the effect of adiabatic heat preservation, even in the environment of high temperature, also can ensure the constancy of gas sampling bottle 1 inside temperature, reduces external high temperature to the influence of sampling process, simultaneously, the design of heat preservation 107 makes the gas sample be in relatively stable environment all the time, can ensure the low diffusion of gas sample, is favorable to long-term storage of gas sample.
As still another embodiment of the present invention, referring to fig. 2, the gas sampling bottle 1 further includes a first sealing ring 108 disposed at the connection between the inner cap 102 and the through air tap 104, and a second sealing ring 109 disposed at the connection between the inner cap 102 and the bottle body 101.
In an embodiment of the present invention, the first seal ring 108 and the second seal ring 109 may be O-rings. By adding the first sealing ring 108 at the joint of the inner cover 102 and the through air tap 104 and adding the second sealing ring 109 at the joint of the inner cover 102 and the bottle body 101, the tightness of the gas sampling bottle is further ensured.
As a further embodiment of the present invention, referring to fig. 1 and 2, the gas sampling bottle 1 further comprises a connection device 110 connected to the inlet end of the through check valve 1031, and the connection device 110 is used for connecting the gas inlet pipe matched with the through check valve 1031 when collecting the gas sample.
As yet another embodiment of the present invention, the hollow portion of the straight air nozzle 104 is cylindrical in shape and the exterior of the straight air nozzle 104 is tapered in shape.
In the embodiment of the present invention, the external shape of the straight air nozzle 104 is designed into a cone, that is, a shape with a thin upper part and a thick lower part, so that the rubber sleeve 105 is conveniently sleeved on the straight air nozzle 104.
As yet another embodiment of the present invention, the aperture of the straight through air nozzle 104 is 1.5 cm.
In the embodiment of the invention, the diameter of the cylinder of the hollow part of the straight-through air tap 104 is designed to be 1.5 cm, so that the cylinder can meet the requirement of capillary action, and the application environment of the cylinder can meet the three-phase perimeter condition. In the process of collecting the gas sample, the capillary force, the saturated brine gravity, the air buoyancy and the gas pressure in the bottle body at the straight-through air tap 104 form a balance system, so that air cannot enter the bottle body; in the gas sample placing process, the through air tap 104 is closed by the rubber sleeve 105, and capillary effects exist on the inner wall of the through air tap 104, the rubber sleeve 105 and the outer wall of the through air tap 104, so that the tightness of the gas sampling bottle is ensured.
As another embodiment of the present invention, the bottle 101, the inner cap 102, the straight-through air tap 104 and the outer cap 106 are all made of stainless steel.
In the embodiment of the invention, the bottle body 101, the inner cover 102, the straight-through air tap 104 and the outer cover 106 are made of stainless steel for preventing gas corrosion, and meanwhile, the stainless steel can prevent metal from rusting caused by water, increase the high temperature resistance, the external pressure resistance and the impact force resistance of the gas sampling bottle, have an explosion-proof function, reduce the risk of sampling failure and prolong the life cycle of the gas sampling bottle. The microcosmic composition of stainless steel material is more inseparable than the material of glass and plastics, and inside gas sample is difficult for outwards diffusing, is favorable to the long-term of gas sample to remain more, makes the gas sampling bottle can repeatedly use for a long time many times.
In another embodiment of the present invention, the check valve 103 is made of polyurethane.
In the embodiment of the present invention, the material of the check valve 103 is anti-corrosion polyurethane, so that the check valve 103 is not corroded by gas.
As a further embodiment of the present invention, referring to fig. 1, the outer cap 106 is screwed to the bottle 101.
In the embodiment of the invention, the outer cover 106 is connected with the bottle body 101 through threads, so that the outer cover 106 is relatively convenient to open or close, and the outer cover 106 is connected with the bottle body 101 through threads because the gas sampling bottle 1 needs to be placed upside down in the gas sample placing process, the outer cover 106 is not easy to fall off in the arranging process, and the outer cover 106 is convenient to place upside down of the gas sampling bottle 1.
Fig. 3 is a flow chart of a method for using the gas sampling bottle according to an embodiment of the present invention, and for convenience of explanation, only the portion related to the embodiment of the present invention is shown. As shown in fig. 3, the method may include the steps of:
step S301: before collecting the gas sample, the outer cover is opened, the rubber sleeve is opened, and saturated saline is filled into the inner cavity of the bottle body through the straight-through air tap.
In the embodiment of the invention, the gas sampling bottle collects the gas sample by adopting a saturated brine discharge method, so that before collecting the gas sample, the inner cavity of the bottle body is filled with saturated brine, and the air in the inner cavity of the bottle body is discharged. The presence of saturated brine can reduce the dissolution of the gas sample and air, and can cool the high-temperature gas sample.
In the embodiment of the present invention, other liquid that can achieve the same effect as saturated brine can be used instead of saturated brine.
Step S302: when the gas sample is collected, the air inlet pipe matched with the straight-through one-way valve is connected with the straight-through one-way valve.
In the embodiment of the invention, when the gas sample is collected, the gas sample can enter the inner cavity of the bottle body through the gas inlet pipe.
As a further embodiment of the invention, when collecting the gas sample, the gas inlet pipe matched with the straight-through one-way valve is connected with the connecting device.
In the embodiment of the invention, the connecting device is connected with the inlet end of the straight-through one-way valve, and the air inlet pipe is connected with the straight-through one-way valve through the connecting device, so that a gas sample enters the inner cavity of the bottle body through the air inlet pipe.
Step S303: and keeping one end of the inner cover of the gas sampling bottle downward, allowing the gas sample to pass through the straight-through one-way valve under the action of external force, opening the diaphragm of the diaphragm one-way valve, entering the inner cavity of the bottle body, and simultaneously discharging saturated brine through the straight-through air tap.
In the embodiment of the invention, during the process of collecting the gas sample, the end of the inner cover of the gas sampling bottle is kept downward, namely the gas sampling bottle is placed upside down. The gas sample passes through the straight-through check valve under the action of external force, the diaphragm of the diaphragm check valve is opened, and the gas sample enters the inner cavity of the bottle body, and in the process, external air cannot enter the bottle body due to the existence of capillary effect at the positions of the straight-through check valve and the diaphragm check valve; the balance system is formed by capillary force at the straight-through air tap, saturated brine gravity, air buoyancy and gas pressure in the bottle body, so that air cannot enter the bottle body, and when the gas sample in the bottle body increases, the gas pressure in the bottle body increases, and the saturated brine is discharged through the straight-through air tap. In the process of collecting the gas sample, air contact or mixing does not exist, and high fidelity of the gas sample is ensured.
Step S304: after the gas sample is collected, the air inlet pipe is pulled out, the rubber sleeve is sleeved on the straight-through air tap, and at the moment, part of saturated saline is reserved in the bottle body.
In the embodiment of the invention, after the gas sample collection is finished, partial saturated brine still remains in the bottle body and is used for providing medium conditions for generating capillary effect at the straight-through air tap and the one-way valve, and simultaneously, the reverse liquid pressure for sealing the gas sample is also provided. After the gas sample collection is finished, the gas inlet pipe is pulled out, the diaphragm of the diaphragm one-way valve is automatically closed, the rubber sleeve is sleeved on the straight-through air faucet and used for sealing the straight-through air faucet, the rubber sleeve is tightly contacted with the outer wall of the straight-through air faucet, and meanwhile, the condition of capillary effect is met, and the air tightness of the gas sampling bottle is further guaranteed by the capillary force at the straight-through air faucet.
Step S305: the outer cover is covered, and the end of the outer cover of the gas sampling bottle is kept downward.
After the gas sample collection is finished, the outer cover is covered, and meanwhile, one end of the outer cover of the gas sampling bottle is kept downwards, namely the gas sampling bottle is placed upside down. Because the bottle still holds partial saturated brine, the partial saturated brine can be used as a barrier for escaping the gas sample, the embodiment of the invention seals the gas sample by utilizing the reverse liquid pressure, and can realize the isolation of the gas sample from the outside in the process of collecting and carrying the gas sample, thereby ensuring that the gas sample is not polluted.
Step S306: when the gas sample needs to be taken out, the outer cover is opened, and the rubber sleeve on the straight-through air tap is removed.
Step S307: the gas sample is withdrawn through the straight through air tap using a sampling needle.
When the gas sample is required to be taken out, the sampling needle is directly used for extracting the gas sample through the straight-through air tap. In the sampling process, the bottle body is still kept to be placed upside down. Because capillary force, saturated brine gravity, air buoyancy and gas pressure in the bottle body are in balance states at the straight-through air tap, the gas sampling bottle always keeps airtight in the sampling process. The gas sample in the sampling needle after the sampling is finished is not polluted by air due to the existence of capillary force.
Step S308: after the extraction is finished, the rubber sleeve is sleeved again, the outer cover is covered, and the end where the outer cover of the gas sampling bottle is positioned is kept downward.
After the sampling is finished, the rubber sleeve is sleeved again, the tightness of the gas sampling bottle is kept, the outer cover is covered, and the end where the outer cover of the gas sampling bottle is located is kept downward, namely, the gas sampling bottle is placed upside down. The gas sample in the gas sampling bottle can be repeatedly used for a plurality of times.
The gas sampling bottle in the embodiment of the invention adopts the method of discharging saturated brine to collect the gas sample, and can realize the strong tightness of the gas sampling bottle and the high fidelity of the gas sample. The capillary effect, the sealing effect of the saturated brine, the low solubility of the saturated brine to the gas sample and the like can ensure the strong air tightness of the gas sampling bottle in the process of collecting, preserving and sampling the gas sample, and ensure that the gas sample is not polluted. The gas sample collection process and the sampling process are simple, convenient, efficient and easy to operate, the gas sampling bottle is small in size and high in safety performance, and portability and field adaptability can be enhanced.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (10)
1. A gas sampling bottle, comprising: the bottle comprises a bottle body, an inner cover which forms an inner cavity with the bottle body, a one-way valve which is used for allowing a gas sample to enter the inner cavity when the gas sample is collected, a straight-through air tap which is used for discharging liquid in the inner cavity when the gas sample is collected, a rubber sleeve which is used for sealing the straight-through air tap and an outer cover which is covered on the bottle body;
the one-way valve and the straight-through air tap are arranged on the inner cover, and an outer cavity for accommodating the one-way valve and the straight-through air tap is formed after the outer cover is covered with the bottle body;
the one-way valve comprises a straight-through one-way valve and a diaphragm one-way valve, the outlet end of the diaphragm one-way valve is communicated with the inner cavity, and the inlet end of the diaphragm one-way valve is connected with the outlet end of the straight-through one-way valve;
before collecting a gas sample, opening the outer cover, opening the rubber sleeve, and filling saturated brine into the inner cavity of the bottle body through the straight-through air tap; when a gas sample is collected, an air inlet pipe matched with the straight-through one-way valve is connected with the straight-through one-way valve; keeping one end of the inner cover of the gas sampling bottle downward, allowing the gas sample to pass through the straight-through one-way valve under the action of external force, opening the diaphragm of the diaphragm one-way valve, entering the inner cavity of the bottle body, and simultaneously allowing saturated brine to be discharged through the straight-through air tap; after the gas sample collection is finished, the gas inlet pipe is pulled out, the rubber sleeve is sleeved on the straight-through air tap, and at the moment, partial saturated saline water is reserved in the bottle body; covering the outer cover, and keeping the end of the outer cover of the gas sampling bottle downward; when the gas sample needs to be taken out, the outer cover is opened, and the rubber sleeve on the straight-through air tap is removed; extracting a gas sample through the straight-through air tap by using a sampling needle; after the extraction is finished, the rubber sleeve is sleeved again, the outer cover is covered, and the end where the outer cover of the gas sampling bottle is located is kept downwards.
2. The gas sampling bottle of claim 1, wherein the bottle body comprises a thermal insulation layer.
3. The gas sampling bottle of claim 1, further comprising a first seal ring disposed at a junction of the inner cap and the straight-through gas tap and a second seal ring disposed at a junction of the inner cap and the bottle body.
4. The gas sampling bottle of claim 1, further comprising a connection means connected to the inlet end of the one-way valve for connecting an air inlet tube mated with the one-way valve when collecting a gas sample.
5. The gas sampling bottle of claim 1, wherein the hollow portion of the straight-through gas tap is cylindrical in shape and the exterior of the straight-through gas tap is conical in shape.
6. The gas sampling bottle of claim 1, wherein the through air tap has an aperture of 1.5 cm.
7. The gas sampling bottle of claim 1, wherein the bottle body, the inner cap, the straight-through air tap, and the outer cap are all stainless steel.
8. The gas sampling bottle of claim 1, wherein the one-way valve is polyurethane.
9. The gas sampling bottle of any one of claims 1 to 8, wherein the outer cap is threadably connected to the bottle body.
10. A method of using a gas sampling bottle according to any one of claims 1 to 9, comprising:
before collecting a gas sample, opening the outer cover, opening the rubber sleeve, and filling saturated brine into the inner cavity of the bottle body through the straight-through air tap;
when a gas sample is collected, an air inlet pipe matched with the straight-through one-way valve is connected with the straight-through one-way valve;
keeping one end of the inner cover of the gas sampling bottle downward, allowing the gas sample to pass through the straight-through one-way valve under the action of external force, opening the diaphragm of the diaphragm one-way valve, entering the inner cavity of the bottle body, and simultaneously allowing saturated brine to be discharged through the straight-through air tap;
after the gas sample collection is finished, the gas inlet pipe is pulled out, the rubber sleeve is sleeved on the straight-through air tap, and at the moment, partial saturated saline water is reserved in the bottle body;
covering the outer cover, and keeping the end of the outer cover of the gas sampling bottle downward;
when the gas sample needs to be taken out, the outer cover is opened, and the rubber sleeve on the straight-through air tap is removed;
extracting a gas sample through the straight-through air tap by using a sampling needle;
after the extraction is finished, the rubber sleeve is sleeved again, the outer cover is covered, and the end where the outer cover of the gas sampling bottle is located is kept downwards.
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| CN201810510826.0A CN108982169B (en) | 2018-05-24 | 2018-05-24 | Gas sampling bottle and use method thereof |
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| CN201810510826.0A CN108982169B (en) | 2018-05-24 | 2018-05-24 | Gas sampling bottle and use method thereof |
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| CN108982169A CN108982169A (en) | 2018-12-11 |
| CN108982169B true CN108982169B (en) | 2023-09-15 |
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| CN109443842A (en) * | 2018-12-14 | 2019-03-08 | 吉林化工学院 | A kind of hermetically sealed sampling bottle of poisonous and harmful medium |
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