Device for manually analyzing oxygen purity

Abstract

The utility model discloses a device for manually analyzing oxygen purity, which belongs to the technical field of oxygen analysis and detection and comprises a gas measuring pipe, a connector is arranged at the bottom of the gas measuring pipe, a three-way valve is arranged at the top of the gas measuring pipe, and a sampling pipe and a connector are further arranged at the top of the three-way valve. The balance bottle is a bottle with an opening in the upper end, and a rubber pipe connected with the connector in the bottom of the gas measuring pipe is further arranged at the bottom of the balance bottle; the upper end of the absorption bottle is provided with a connector, the side wall of the lower end of the absorption bottle is provided with a side pipe, the side pipe is connected with the gas measuring pipe through a rubber pipe, and a plurality of copper wires are further placed in the absorption bottle; absorbents are placed in the gas measuring pipe, the balance bottle and the absorption bottle, and the absorbents are mixed solutions of ammonium chloride solutions and ammonia water solutions. The device has the beneficial effects that the device is easy to manufacture, small in occupied space and accurate in oxygen test result, and has predictability and production guidance effects.

Description

TECHNICAL FIELD

[0001] The utility model relates to oxygen analysis detection technical field, specifically, relate to a manual analysis oxygen purity's device. BACKGROUND

[0002] The quality of oxygen product produced by cryogenic oxygen production directly affects the use of users. Therefore, the oxygen purity determination method is very important. Inaccurate oxygen purity determination will affect the working condition adjustment and bring disadvantages to production. At present, oxygen sampling and gas chromatography analysis, spectral analysis method and other instrument analysis are used. Since the oxygen production environment temperature is low, the analysis result is greatly affected, and the instrument analysis time is long, which cannot well adapt to the timeliness of production. Therefore, a simple, fast and reliable oxygen analysis device is needed for pre-analysis of the produced oxygen.

[0003] An oxygen detection device and method are disclosed in the patent application with publication number CN118243879A, which includes: collecting oxygen concentration data and gas pressure data, obtaining the data stability degree of the oxygen concentration data sequence according to the data balance condition and the data fluctuation condition of the oxygen concentration data in every two adjacent time periods; determining whether to perform difference processing on the oxygen concentration data sequence according to the data stability degree; if yes, obtaining difference concentration data and difference pressure data under different difference orders; obtaining the feature retention degree under each difference order according to the change condition of the difference concentration data in each time period and the change condition of each difference pressure data in the corresponding same time period; screening and determining the optimal difference order, and predicting the oxygen concentration by using the difference concentration data under the optimal difference order to obtain the oxygen detection result. The oxygen analysis method provided by the application is relatively complex and cannot well adapt to the low-temperature environment of cryogenic oxygen production. UTILITY MODEL CONTENT

[0004] To overcome the problems in the prior art that instrument analysis cannot accurately detect the results in the low-temperature environment of cryogenic oxygen production, and a fast, simple and reliable oxygen pre-analysis device is needed, the utility model provides a device for manually analyzing oxygen purity, which comprises:

[0005] A gas measuring tube is provided with a connector at the bottom and a three-way valve at the top.

[0006] A balance bottle is an open bottle at the top, and a rubber tube is connected to the connector at the bottom of the gas measuring tube.

[0007] An absorption bottle is provided with a connector at the top and a side tube on the sidewall at the bottom, and the side tube is connected to the gas measuring tube through a rubber tube.

[0008] The gas measuring tube, the balance bottle and the absorption bottle are all provided with the absorbent, and the absorbent is a mixed solution of ammonium chloride solution and ammonia solution.

[0009] The sample is taken by the cooperation of the gas measuring tube and the balance bottle, and then is sent into the absorption bottle, and the sample is reacted with the mixed solution of ammonium chloride and ammonia and the copper wire, and the oxygen in the sample is reacted by the principle that the copper is easily oxidized in the ammonia solution, the high copper or low copper ions produced are absorbed by the ammonium chloride to generate high copper salt and low copper salt, the low copper salt easily absorbs oxygen to produce high copper salt, and the high copper salt is reduced to low copper salt again to absorb oxygen, so that the oxygen in the sample is reacted, the residual gas in the sample is sent back to the gas measuring tube to measure the volume, and the oxygen concentration in the sample can be quickly obtained by comparing the volumes of the sample before and after the reaction.

[0010] Preferably, the volume ratio of the ammonium chloride solution to the ammonia solution is 1:1.

[0011] Preferably, the mass fraction of the ammonium chloride solution is 70-80%, and the mass fraction of the ammonia solution is 20-30%, so that the copper wire is better oxidized and reduced, the oxygen in the sample is consumed, and the test result is more accurate.

[0012] Preferably, the copper wire is a spiral with a diameter of 5-8 mm and a length of 8-15 mm, and the copper wire is bent into a spiral, so that the copper wire is more convenient to react with the oxygen in the sample.

[0013] Preferably, the diameter of the copper wire is 0.8-1.5 mm, and the mass of the copper wire is 450-550 g, so that there is enough copper wire and enough reaction area to react with the oxygen in the sample.

[0014] Preferably, the upper part of the absorption bottle is provided with a spherical structure, and the spherical structure at the top of the absorption bottle plays the role of increasing the volume, reducing the backflow of liquid, preventing the escape of gas, improving the flow of gas and enhancing the stability.

[0015] Preferably, the bottom of the absorption bottle is provided with an opening, and the opening is detachably provided with a plug, so that the copper wire is convenient to take and place.

[0016] Preferably, the outer surface of the gas measuring tube is provided with a scale, so that the volume of the sample is convenient to read.

[0017] Preferably, the gas measuring tube and the balance bottle are both filled with the absorbent, and the absorbent in the absorption bottle is immersed in the copper wire, so that the copper wire is fully reacted with the oxygen in the sample.

[0018] Beneficial effects:

[0019] The beneficial effects of the technical scheme of the present application are as follows:

[0020] (1) through the cooperation of the gas metering tube and the balance bottle, the appropriate volume of sample is taken, and then the sample is sent into the absorption bottle, through the cooperation of the mixed solution of ammonium chloride and ammonia water and copper wire, in the ammonia solution, copper is easily oxidized, high copper or low copper ions are produced, and the high copper or low copper ions are absorbed by the ammonium chloride to generate high copper salt and low copper salt, the low copper salt is easy to absorb oxygen to produce high copper salt, and the high copper salt is reduced to low copper salt, and the principle of absorbing oxygen again makes the oxygen in the sample react, the remaining gas in the sample is sent back to the gas metering tube to measure the volume, and the volume of the sample before and after the reaction is compared to quickly obtain the concentration of oxygen in the sample.

[0021] (2) The utility model discloses a larger opening is arranged at the bottom of the absorption bottle to facilitate the taking and placing of the copper wire, and the spherical structure at the top of the absorption bottle increases the volume, reduces the backflow of liquid, prevents the escape of gas, improves the flow of gas and enhances the stability.

[0022] (3) The copper wire is bent into a spiral to facilitate the reaction with oxygen in the sample, and the gas metering tube and the balance bottle are filled with absorbent to cooperate with the sampling tube at the top of the gas metering bottle and the three-way valve to perform the air tightness test on the overall device before analysis. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will be briefly introduced the drawings needed to be used in the embodiments, it should be understood, the following drawings only show some embodiments of the utility model, therefore should not be regarded as the limitation to the scope, for the ordinary skilled person in the art, under the premise of not paying the creative labor, still can obtain other related drawings according to these drawings.

[0024] Figure 1 It is the overall schematic diagram of the device for manually analyzing oxygen purity of the utility model.

[0025] In the drawing: 1, gas metering tube;2, balance bottle;3, absorption bottle;4, interface;5, absorbent;6, copper wire;7, rubber tube;8, side tube;9, three-way valve;10, sampling tube;11, spherical structure;12, opening;13, plug;14, scale. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme of the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments of the present application. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of the present application.

[0027] The embodiments of the present application take the appropriate volume of sample through the cooperation of the gasometer and the balance bottle, and then send the sample into the absorption bottle to cooperate with the mixed solution of ammonium chloride and ammonia water and copper wire. In the ammonia solution, copper is easily oxidized, and the high copper or low copper ions produced are absorbed by ammonium chloride to generate high copper salt and low copper salt. The low copper salt easily absorbs oxygen to produce high copper salt, and the high copper salt is reduced to low copper salt again, which absorbs oxygen. The principle makes the oxygen in the sample react, and the remaining gas in the sample is sent back to the gasometer to measure the volume. The volume of the sample before and after the reaction can quickly obtain the concentration of oxygen in the sample. The specific embodiments are as follows:

[0028] As shown in Figure 1 A device for manually analyzing oxygen purity, comprising:

[0029] A gasometer 1, the bottom of the gasometer 1 is provided with an interface 4, and the top of the gasometer 1 is provided with a three-way valve 9. The top of the three-way valve 9 is further provided with a sampling tube 10 and an interface 4;

[0030] A balance bottle 2, the balance bottle 2 is an open-top bottle, and the bottom of the balance bottle 2 is further provided with a rubber tube 7 connected to the interface 4 at the bottom of the gasometer 1;

[0031] An absorption bottle 3, the upper end of the absorption bottle 3 is provided with an interface 4, and the lower end of the absorption bottle 3 is provided with a side tube 8 on the side wall. The side tube 8 is connected to the gasometer 1 through the rubber tube 7, and a plurality of copper wires are placed in the absorption bottle 3;

[0032] The gasometer 1, the balance bottle 2 and the absorption bottle 3 all contain an absorbent 5, which is a mixed solution of ammonium chloride solution and ammonia water solution.

[0033] The sample is taken through the cooperation of the gasometer 1 and the balance bottle 2, and then is sent into the absorption bottle 3 through the cooperation of the mixed solution of ammonium chloride and ammonia water and the copper wire. In the ammonia solution, copper is easily oxidized, and the high copper or low copper ions produced are absorbed by the ammonium chloride to generate high copper salt and low copper salt. The low copper salt easily absorbs oxygen to produce high copper salt, and the high copper salt is reduced to low copper salt again, and absorbs oxygen. The principle makes the oxygen in the sample react, and the remaining gas in the sample is sent back to the gasometer 1 to measure the volume. The volume of the sample before and after the reaction can quickly obtain the concentration of oxygen in the sample.

[0034] Specifically, the volume ratio of the ammonium chloride solution to the ammonia water solution is 1:1.

[0035] Specifically, the mass fraction of the ammonium chloride solution is 70-80%, and the mass fraction of the ammonia water solution is 20-30%, so that the copper wire is better oxidized and reduced, and the oxygen in the sample is consumed, so that the test result is more accurate.

[0036] Specifically, the copper wire is a spiral with a diameter of 5-8mm, and the length of the spiral is 8-15mm. The copper wire is bent into a spiral, which is more convenient for reacting with the oxygen in the sample.

[0037] Specifically, the diameter of the copper wire is 0.8-1.5mm, and the mass of the copper wire is 450-550g, so that there is enough copper wire and enough reaction area to react with the oxygen in the sample.

[0038] Specifically, the upper part of the absorption bottle 3 is provided with a spherical structure 11, and the spherical structure 11 at the top of the absorption bottle 3 plays the role of increasing the volume, reducing the backflow of liquid, preventing the escape of gas, improving the flow of gas and enhancing the stability.

[0039] Specifically, the bottom of the absorption bottle 3 is provided with an opening 12, and the opening 12 is detachably installed with a plug 13, which is convenient for taking and placing the copper wire.

[0040] Specifically, the outer surface of the gasometer 1 is provided with a scale 14, which is convenient for reading the volume of the sample.

[0041] Specifically, the gasometer 1 and the balance bottle 2 are filled with the absorbent 5, and the absorbent 5 in the absorption bottle 3 is immersed in the copper wire, so that the copper wire fully reacts with the oxygen in the sample.

[0042] Working principle: before sampling, first open the plug at the bottom of the absorption bottle, put in the copper wire, then tightly plug, then connect the balance bottle, gas measuring tube and absorption bottle through the rubber tube, fill the absorption agent, check the leakage of the whole device, then sample through the three-way valve and sampling tube, control the volume of the sample to be 100ml through the cooperation of the balance tube and the gas measuring tube, then rotate the three-way valve to make the 100ml sample enter the absorption bottle filled with absorption agent and copper wire, and react, at this time, shake and shake the absorption bottle to accelerate the oxygen reaction, measure the volume of the remaining gas of the sample through the gas measuring bottle, cycle several times until the volume of the remaining gas of the sample does not change any more, read the final volume, compare the volume difference of the sample before and after the reaction to obtain the oxygen concentration in the sample.

[0043] The preferred embodiments of the present application are described above only, and are not intended to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A device for manually analyzing the purity of oxygen, characterized in that, The utility model relates to a kind of gas absorption devices, including: A gas measuring tube (1), the bottom of the gas measuring tube (1) is provided with an interface (4), the top of the gas measuring tube (1) is provided with a three-way valve (9), the top of the three-way valve (9) is further provided with a sampling tube (10) and the interface (4); A balance bottle (2), the balance bottle (2) is an open-top bottle, the bottom of the balance bottle (2) is further provided with a rubber tube (7) connected to the interface (4) of the bottom of the gas measuring tube (1); An absorption bottle (3), the upper end of the absorption bottle (3) is provided with an interface (4), the lower end of the absorption bottle (3) is provided with a side tube (8) on the side wall, the side tube (8) is connected to the gas measuring tube (1) through the rubber tube (7), and a plurality of copper wires (6) are placed in the absorption bottle (3); The gas measuring tube (1), the balance bottle (2) and the absorption bottle (3) all have absorbent (5) placed therein.

2. The apparatus for manually analyzing oxygen purity according to claim 1, wherein, The copper wire (6) is a spiral with a diameter of 5-8 mm, and the length of the spiral is 8-15 mm.

3. The apparatus for manually analyzing oxygen purity according to claim 1, wherein, The diameter of the copper wire (6) is 0.8-1.5 mm, and the mass of the copper wire (6) is 450-550 g.

4. The apparatus for manually analyzing oxygen purity according to claim 1, wherein, The upper part of the absorption bottle (3) is provided with a spherical structure (11).

5. The apparatus for manually analyzing oxygen purity according to claim 1, wherein, The bottom of the absorption bottle (3) is provided with an opening (12), and a plug (13) is detachably installed at the opening (12).

6. The apparatus for manually analyzing oxygen purity according to claim 1, wherein, The outer surface of the gas measuring tube (1) is provided with a scale (14).

7. The apparatus for manually analyzing oxygen purity according to claim 1, wherein, The gas measuring tube (1) and the balance bottle (2) are both filled with the absorbent (5), and the absorbent (5) in the absorption bottle (3) is immersed in the copper wire (6).

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