CN106053158A - Greenhouse gas sampling bottle - Google Patents

Abstract

The present invention proposes a greenhouse gas sampling bottle, which includes a bottle body, a sliding piston, a butyl rubber stopper, and a plastic bottle cap, wherein the bottle body is a hollow cylinder, and the bottle body extends vertically. The sliding piston is installed on the top of the bottle body, a square pressure hole is left on the top of the bottle body, the butyl rubber plug is installed on the bottom end of the bottle body, the plastic bottle cap is located below the bottle body, and the screw thread cap Hold the bottom of the bottle, and at the same time play the role of fixing the butyl rubber stopper to prevent the bottle body from leaking, and a round hole with a diameter of 5mm is opened in the middle of the plastic bottle cap, and the sampling needle can be directly passed through the round hole when sampling. Through the butyl rubber stopper, the gas is injected into the bottle. At the same time, when measuring samples, the sampling needle can be directly inserted into the butyl rubber stopper to extract the gas in the bottle.

Description

Greenhouse gas sampling bottle

technical field

The invention relates to a sampling bottle, in particular to a greenhouse gas sampling bottle.

Background technique

In the current greenhouse gas research, gas chromatography analysis is mostly used, and vacuum bottle sampling is required. On the one hand, it is troublesome to vacuumize the vacuum bottle sampling, and the poor vacuum degree will also affect the accuracy of the results. On the other hand, after the sample is drawn from the vacuum bottle once during analysis and measurement, the gas pressure in the bottle changes, and when the gas is drawn again , just as the concentration and pressure of the gas extracted for the first time are different, if the volume of the first sampling is too large, due to the pressure problem, it will be difficult to extract gas from it for the second time. In order to overcome the shortcomings of using vacuum bottles for sampling, we invented a sampling bottle device that does not require vacuuming. The gas samples are basically the same.

In summary, the existing technology has the following disadvantages: 1. Vacuuming is troublesome, time-consuming and laborious; 2. Insufficient vacuum will affect the accuracy of the results; 3. Every time the sample is drawn, the pressure and concentration in the bottle will change, affecting The next sampling is not conducive to the simultaneous analysis of multiple indicators. In view of above-mentioned defective, be necessary to improve really.

Contents of the invention

The invention proposes a greenhouse gas sampling bottle, which solves the defects of troublesome vacuuming and time-consuming and labor-intensive problems in the prior art.

Technical scheme of the present invention is realized like this:

A greenhouse gas sampling bottle, which includes a bottle body, a sliding piston, a butyl rubber stopper, and a plastic bottle cap, wherein the bottle body is a hollow cylinder, the bottle body extends vertically, and the sliding piston Installed on the top of the bottle body, there is a square pressure hole on the top of the bottle body, the butyl rubber stopper is installed at the bottom of the bottle body, the plastic bottle cap is located below the bottle body, and covers the bottom of the bottle body through the screw thread mouth , and at the same time play the role of fixing the butyl rubber stopper to prevent the bottle body from leaking, and a round hole with a diameter of 5mm is opened in the middle of the plastic bottle cap, and the sampling needle can pass through the butyl rubber directly through the round hole when sampling. The rubber stopper is used to inject gas into the bottle, and when measuring samples, the sampling needle can be directly inserted into the butyl rubber stopper to extract the gas in the bottle.

Compared with the prior art, the present invention has the following beneficial effects: With the movement of the sliding piston, the gas in the bottle can be driven away without vacuuming, and the gas can be injected into the bottle through the butyl rubber stopper for sampling At the same time, the volume can be changed through the sliding of the piston to maintain a stable pressure in the bottle during sample injection, which is conducive to multiple sample injections after one sample and simultaneous determination of multiple indicators in one sample.

Further improvement of the present invention is as follows:

Further, the cylindrical protrusion of the butyl rubber stopper is just enough to be inserted into the body of the bottle, and the seal is airtight.

Further, the bottle body is made of a cylindrical plastic barrel.

Further, the bottom outer wall of the bottle body is provided with internal threads.

Further, the inside of the plastic bottle cap is provided with threads that match the threads on the outer wall of the lower end of the bottle body.

Further, the sliding piston is similar to the piston of a syringe, but the length is only 2 cm, which can slide with the change of the gas pressure in the bottle and can also play a sealing role.

Further, the diameter of the top of the sliding piston is larger than the diameter of the tail of the sliding piston.

Further, the top of the sliding piston matches the inner diameter of the bottle body.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. For those skilled in the art, other drawings can also be obtained according to these drawings without any creative effort.

Fig. 1 is a schematic diagram of the greenhouse gas sampling bottle of the present invention.

Among them: greenhouse gas sampling bottle 100, bottle body 11, sliding piston 12, butyl rubber stopper 13, plastic bottle cap 14, external thread 15, bottle cap internal thread 16, bottle top 17, pressure hole 18, round hole 20.

detailed description

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

As shown in FIG. 1 , a greenhouse gas sampling bottle 100 includes a bottle body 11 , a sliding piston 12 , a butyl rubber stopper 13 , and a plastic bottle cap 14 .

The bottle body 11 is a hollow cylinder, and the bottle body 11 extends vertically. The sliding piston 12 is installed on the top of the bottle body 11, and a square pressure hole 18 is left on the top of the bottle body 11. Described butyl rubber stopper 13 is installed on the bottom of bottle body 11, and described plastic bottle cap 14 is positioned at the below of bottle body 11, covers the bottom of bottle by screw thread mouth, plays the effect of fixing butyl rubber stopper 13 simultaneously, Prevent the bottle body from leaking, and the middle of the plastic bottle cap 14 is provided with a circular hole 20 with a diameter of 5mm. This circular hole is used for injecting gas during sampling and extracting gas during sampling. The outer threads 15 at the bottom of the bottle body are matched to fix the butyl rubber stopper 13 to prevent the bottle body 11 from leaking. When the circular hole 20 is used for sampling, the sampling needle can directly pass through the butyl rubber stopper 13 to inject gas into the bottle, and when measuring samples, the sampling needle can be directly inserted into the butyl rubber stopper 13 to extract the gas in the bottle.

The cylindrical protrusion of the butyl rubber stopper 13 can just be plugged into the bottle body 11, and is sealed airtight, and the bottom end can cover the mouth of the bottle body. The bottle body 11 is made of a cylindrical plastic tube. The bottom outer wall of the bottle body 11 is provided with threads 15 . The top of the plastic bottle cap 14 is provided with a screw thread 16 threadedly engaged with the outer wall of the lower end of the bottle body 11 . Described sliding piston 12 is shaped like the piston of syringe, but length has only 2cm, both can slide with the change of gas pressure in the bottle and can play sealing effect again.

The pressing hole 18 is facing the central position of the tail of the sliding piston 12 . The diameter of the top of the sliding piston 12 is larger than the diameter of the tail of the sliding piston 12 . The top diameter of the sliding piston 12 closely matches the inner diameter of the bottle body 11 .

The manufacturing method of the greenhouse gas sampling bottle 100 is as follows:

The first step: the production of the bottle body, the bottle body can be made of a cylindrical plastic barrel with a certain diameter, and one end, that is, the bottom outer mouth, has a screw thread mouth, so that it can be equipped with a plastic cap. The inside of the bottle body is smooth and even, and the general sliding piston can be like the piston of a syringe Can slide. The other end of the bottle body, that is, the top, is bonded with a plastic cover with a square pressure hole in the center.

The second step: the production of the movable piston. The outer diameter of the movable piston matches the inner diameter of the bottle body, which can not only slide, but also seal airtight, just like the piston of a syringe.

The third step: butyl rubber stopper, the cylindrical protrusion of the butyl rubber stopper is just enough to be inserted into the bottle body, and it is sealed and airtight, and the bottom of the butyl rubber stopper can cover the mouth of the bottle body.

The fourth part: Plastic outer cover, the inner thread of the outer cover matches the outer thread of the bottom of the bottle body, so as to cover the bottom and fix the rubber stopper to prevent air leakage. A circular hole with a diameter of 5mm is opened in the middle of the plastic cover for sampling the injected gas and extracting the gas during sampling.

Compared with the prior art, the present invention has the following beneficial effects: with the movement of the sliding piston, the air in the bottle can be driven away without vacuuming, and the gas sample can be injected through the butyl rubber plug, and at the same time, the sample can be measured through When the butyl rubber stopper extracts gas, the piston will also slide due to the pressure change, so as to maintain a stable gas sample volume and pressure in the bottle, which will not affect the next extraction of gas, and can meet the determination of multiple and multiple indicators.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the scope of the present invention. within the scope of protection.

Claims (8)

1. a greenhouse gas sampling bottle, which comprises a bottle body, a sliding piston, a butyl rubber stopper, and a plastic bottle cap, is characterized in that: the bottle body is a hollow cylinder, and the bottle body extends vertically , the sliding piston is installed on the top of the bottle body, a square pressure hole is left on the top of the bottle body, the butyl rubber plug is installed on the bottom end of the bottle body, the plastic bottle cap is located at the bottom of the bottle body, through the screw thread mouth Cover the bottom of the bottle, and at the same time play the role of fixing the butyl rubber stopper to prevent air leakage from the bottle body, and a round hole with a diameter of 5mm is opened in the middle of the plastic bottle cap, and the sampling needle can be directly inserted into the round hole when sampling. Through the butyl rubber stopper, the gas is injected into the bottle, and at the same time when the sample is measured, the sampling needle can be directly inserted into the butyl rubber stopper to extract the gas in the bottle. 2. The greenhouse gas sampling bottle according to claim 1, characterized in that: the cylindrical protrusion of the butyl rubber stopper can just be inserted into the bottle body, and is sealed airtight. 3. The greenhouse gas sampling bottle according to claim 1, characterized in that: the bottle body is made of a cylindrical plastic cylinder. 4. The greenhouse gas sampling bottle according to claim 1, characterized in that: the outer wall of the bottom end of the bottle body is provided with threads. 5 . The greenhouse gas sampling bottle according to claim 4 , characterized in that: the plastic bottle cap is provided with a screw thread matched with the screw thread on the outer wall of the lower end of the bottle body. 6 . 6 . The greenhouse gas sampling bottle according to claim 1 , wherein the sliding piston is similar to the piston of a syringe, but only 2 cm in length, and can slide with the change of gas pressure in the bottle and also play a sealing role. 6 . 7. The greenhouse gas sampling bottle according to claim 6, characterized in that: the diameter of the top of the sliding piston is larger than the diameter of the tail of the sliding piston. 8. The greenhouse gas sampling bottle according to claim 6, characterized in that: the top of the sliding piston matches the inner diameter of the bottle body.