CS247030B1 - Sample container for gases - Google Patents

Abstract

The purpose is a gas sampler from the bottle, on the neck with the valve mounted closure, which allows collection gas samples and after filling the sampler it closes perfectly. The gas sampler is equipped with a versatile valve closure with long-term life. They are used to make it bottles that have previously served as containers for chemicals and they are problematic when emptied waste. The sampler can be used in chemical research institutes, at universities, hospitals, pre- \ t • Rulers and coal mining. Everywhere where samples are taken and transported gases for analysis.

Description

The invention relates to a sample container for gaseous samples, in which the closure by means of a valve closure is provided.

Until now, cylindrical glass samples having cocks at both ends have been most commonly used for gas sampling. The contents of the sample container shall be such that the volume of the sample taken is sufficient for two determinations. For sampling of liquefied hydrocarbon gases, pressurized metal samplers equipped with a needle valve are used.

Sealing liquids are used to collect the gaseous samples into the samplers, to print samples from the samplers into the analyzers, and to move them in the analyzers. The sealing liquid may be any liquid substance that does not chemically react with the gas with which it is in contact and in which the gas does not dissolve or dissolves very little. Particularly suitable are water, aqueous salt solutions and mercury. As a rule, saturated solutions of inorganic salts acidified with a small amount of non-volatile acid, e.g. sulfuric acid and methyl orange and methyl red.

In the normal use of cylindrical glass samplers with taps at the ends, the lubricating grease is filled from the taps, which is manifested not only by the leakage of the sealing liquid but also by the gaseous sample. The cylindrical shape of the sampler extending into a glass tube with taps at the top and bottom makes it difficult to handle analytical laboratories and transport in chemical plants. Almost exclusively this requires a horizontal position. Glass shelf life is therefore short. The repair of the damaged sample box is very difficult and practically not carried out in the glass workshops. This leads to considerable losses of materials and energy.

The above-mentioned drawbacks are substantially eliminated by the gas sampler in the bottle with the thread on the throat according to the invention, which is characterized in that the bottle is provided with a valve cap with an internal thread for screwing onto the bottle, a sealing ring, two threaded spindles for closing and opening the inlet and outlet openings, which are provided with stoppers on the outside of the valve closure and on the inside of the opening there is a riser pipe extending to the bottom of the bottle.

The invention is progressing in that the gas sample container consists of a long-life universal valve closure and a bottle, which may be of glass, metal or plastic. A significant benefit of the invention is that it makes it possible to use bottles which previously served as packaging for the transport of chemicals and have become problematic waste when emptied. They are available! in sufficient quantity in any chemical laboratory. The gas samplers of the invention are practical, aesthetically pleasing. Handling and transport is convenient and takes place in bottle crates. The use of dark colored glass bottles is also an advantage, especially for light sensitive gas samples. The leakage of the sealing liquid from the gas sample container is completely cured.

The drawing shows a schematic diagram of a gas sample in axonometric view. According to the invention, the bottle 5 with the thread 8 on the neck is made of glass, metal or plastic. A valve cap 2 having an internal thread 8 with an inserted riser pipe 4 and a gasket 3 is screwed onto the bottle neck. of the material relative to the sampled gas. The test ring 3 is made of PVC or silicone rubber. The riser pipe 4 is made of teflon. On the valve closure 2 there is an inlet opening 7 and a discharge opening 6. The inlet opening 7 and a discharge opening 6 are provided with threaded spindles 1 and provided with a stopper on the outside of the valve closure.

The sampler must be pired by taking a gas sample filled with stopping liquid 10 up to the throat. The inlet piping to the sampler shall be perfectly flushed with the sample gas. During sampling, the sample container is rotated to such a position that the sealing liquid bottle 10 is above the valve cap 2. On sampling, the sealing liquid 10 is discharged from the sample container through the discharge opening 8 and the space above the sealing liquid level 10 is filled with sample gas through a rising pipe 4. After filling, the sample container is completely closed.

When taking samples of gases under pressure in tanks, tanks, gas tanks, the sampler shall be in the initial position, i. j. the valve closure 2 is above the sealing liquid bottle 10. The sampled gas enters the sampler through the discharge opening 6 and expels the sealing liquid through the tube 4 through the inlet opening 7. The space above the level of the sealing liquid 10 is filled with the sample gas. After filling, the sample container is completely closed.

Claims (1)

The f-shaped gas sampler with f-threaded neck is characterized by a valve cap (2j with internal thread (9) for screwing onto the bottle, a sealing ring (3), two threaded spindles (1) for closing and opening the inlet opening (7) and a discharge opening (6) which are provided with earrings on the outside of the valve closure (2) and on the inside there is a riser pipe (4) extending on the bottom of the bottle (5) at the inlet opening (7).