Novel closed sampling device for gas-liquid separation

Abstract

The utility model discloses a novel airtight sampling device for gas-liquid separation, which relates to the technical field of gas-liquid separation, and comprises a first cooling water outlet flange and a second cooling water inlet flange, the first cooling water outlet flange and the second cooling water inlet flange are both connected with a gas-liquid separator, the upper end of the gas-liquid separator is connected with a pressure gauge, and the pressure gauge is connected with a pressure gauge. A second needle valve and a sixth needle valve are arranged between the gas-liquid separator and the pressure gauge, one end, far away from the gas-liquid separator, of the pressure gauge is connected with a sampling steel cylinder, a third needle valve is arranged between the pressure gauge and the sampling steel cylinder, one end, far away from the pressure gauge, of the sampling steel cylinder is connected with a high-pressure hose, and a fourth needle valve is arranged between the pressure gauge and the high-pressure hose. According to the utility model, the gas-liquid separator, the valve and the pipeline are integrated into the box body, the integrated design is adopted, the problem that mixed samples are respectively sampled after being separated at one time can be solved, water in the samples is cooled by using the gas-liquid separator, and the effect of separating from a gas phase is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of gas-liquid separation, in particular to a novel gas-liquid separation closed sampling device. Background Technique

[0002] A closed sampler is a device used to collect gas, solid, and liquid samples, and is widely used in industries such as chemical engineering, environmental protection, food, and medicine. Reasonable design and use of the closed sampler can effectively avoid environmental pollution and personal injury. Currently, in the petrochemical industry and the coal chemical industry, the media are generally flammable, explosive, and toxic. Considering aspects such as process operation safety, personnel safety, environmental pollution, and sampling representativeness, a closed sampler is often used, which is a device for collecting samples. During the production process, it is necessary to judge and control the reaction degree through sampling, and sampling analysis is an important process in the production process. Defects and deficiencies of the prior art: Some reactions will produce water or require water to participate in the reaction, and at the same time, gas will be generated. When taking samples of this part of the gas, a part of the water will be entrained, and this part of the water will exist in the gas sample in the form of water vapor and condensate. During the sampling process, some gas will escape, which has a greater impact on the human body and environmental pollution; the presence of water in the gas sample causes greater damage to the instrument during instrumental analysis and affects the accuracy of the analysis results; and during the sampling process, a large amount of residual liquid needs to be discharged, the collection is cumbersome and the effect is not ideal, and it even causes greater harm to the human body. Based on this, a novel gas-liquid separation closed sampling device is provided now, which can eliminate the drawbacks of the existing device. Content of the Utility Model

[0003] The purpose of the utility model is to provide a novel gas-liquid separation closed sampling device to solve the problem of discharging a large amount of residual liquid, with cumbersome collection and unsatisfactory effect.

[0004] To achieve the above purpose, the utility model provides the following technical solutions:

[0005] A new type of air-liquid separation closed sampling device, including a first cooling water outlet flange and a second cooling water inlet flange. Both the first cooling water outlet flange and the second cooling water inlet flange are connected to an air-liquid separator. The upper end of the air-liquid separator is connected to a pressure gauge. There is a second needle valve and a sixth needle valve between the air-liquid separator and the pressure gauge. One end of the pressure gauge away from the air-liquid separator is connected to a sampling cylinder. There is a third needle valve between the pressure gauge and the sampling cylinder. One end of the sampling cylinder away from the pressure gauge is connected to a high-pressure hose. There is a fourth needle valve between the pressure gauge and the high-pressure hose. The medium inlet flange and the nitrogen inlet flange are both connected to the air-liquid separator through a first three-way valve. The bottom end of the air-liquid separator is connected to a second three-way valve. There is a first needle valve between the air-liquid separator and the second three-way valve. One end of the second three-way valve is connected to a sight glass through a fifth needle valve. One end of the sight glass away from the fifth needle valve is connected to a liquid-phase medium outlet flange. The other end of the second three-way valve is connected to a gas-phase medium outlet flange. There is a second one-way valve between the second three-way valve and the gas-phase medium outlet flange. There is a second purge valve between the second one-way valve and the second three-way valve. One side of the second purge valve away from the gas-phase medium outlet flange is connected to a high-pressure hose, and the high-pressure hose is connected to the sampling cylinder.

[0006] On the basis of the above technical solution, the present utility model also provides the following optional technical solutions:

[0007] In an optional solution: There is a second needle valve between the pressure gauge and the air-liquid separator.

[0008] In an optional solution: There is a first purge valve between the first three-way valve and the first one-way valve.

[0009] In an optional solution: The second three-way valve and the fifth needle valve are jointly connected to a needle-type ball valve.

[0010] In an optional solution: There is a first one-way valve between the nitrogen inlet flange and the first three-way valve.

[0011] In an optional solution: There is a jacket on the upper part of the air-liquid separator.

[0012] In an optional solution: The inner tube of the air-liquid separator is semi-circular.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] 1. The present utility model integrates the air-liquid separator, valves, and pipelines into a box body, with an integrated design, which can solve the problem of sampling each component after separating the mixed sample at one time, and use the air-liquid separator to cool the water in the sample and achieve the separation effect from the gas phase.

[0015] 2. All joints of the components of the present utility model are connected by flanges, ferrule fittings and quick connectors, with good sealing performance and elimination of environmental pollution. Brief Description of the Drawings

[0016] Figure 1 It is a schematic structural diagram of a novel air-liquid separation closed sampling device of the present utility model.

[0017] Figure 2 It is a schematic structural diagram of the air-liquid separator of the present utility model.

[0018] Annotation of reference numerals in the drawings: 1. First cooling water outlet flange; 2. Second cooling water inlet flange; 3. Medium inlet flange; 4. Nitrogen inlet flange; 5. Liquid phase medium outlet flange; 6. Gas phase medium outlet flange; 7. First purge valve; 8. First three-way valve; 9. First check valve; 10. Sight glass; 11. Second check valve; 12. Needle valve; 13. First needle valve; 14. Second three-way valve; 15. Second purge valve; 16. Air-liquid separator; 17. Second needle valve; 18. Sampling cylinder; 20. Third needle valve; 21. Fourth needle valve; 22. High-pressure hose; 23. Fifth needle valve; 24. Sixth needle valve; 25. Pressure gauge. Detailed Description of the Preferred Embodiment

[0019] In order to make the purpose, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the drawings and embodiments.

[0020] In one embodiment, as Figure 1 - Figure 2As shown in the figure, a new type of air-liquid separation closed sampling device includes a first cooling water outlet flange 1 and a second cooling water inlet flange 2. Both the first cooling water outlet flange 1 and the second cooling water inlet flange 2 are connected to a gas-liquid separator 16. The upper end of the gas-liquid separator 16 is connected to a pressure gauge 25. A second needle valve 17 and a sixth needle valve 24 are provided between the gas-liquid separator 16 and the pressure gauge 25. One end of the pressure gauge 25 away from the gas-liquid separator 16 is connected to a sampling cylinder 18. A third needle valve 20 is provided between the pressure gauge 25 and the sampling cylinder 18. One end of the sampling cylinder 18 away from the pressure gauge 25 is connected to a high-pressure hose 22. A fourth needle valve 21 is provided between the pressure gauge 25 and the high-pressure hose 22. The medium inlet flange 3 and the nitrogen inlet flange 4 are both connected to the gas-liquid separator 16 through a first three-way valve 8. The bottom end of the gas-liquid separator 16 is connected to a second three-way valve 14. A first needle valve 13 is provided between the gas-liquid separator 16 and the second three-way valve 14. One end of the second three-way valve 14 is connected to a sight glass 10 through a fifth needle valve 23. One end of the sight glass 10 away from the fifth needle valve 23 is connected to a liquid-phase medium outlet flange 5. The other end of the second three-way valve 14 is connected to a gas-phase medium outlet flange 6. A second purge valve 15 is provided between the second check valve 11 and the second three-way valve 14. A second check valve 11 is provided between the second three-way valve 15 and the gas-phase medium outlet flange 6. One side of the second purge valve 15 away from the gas-phase medium outlet flange 6 is connected to the high-pressure hose 22. The high-pressure hose 22 is connected to the sampling cylinder 18; by opening the first purge valve 7 and starting the first check valve 9, turning the first three-way valve 8 to F2, opening the first needle valve 13 and turning the second three-way valve 14 to F2, opening the needle valve 23, purging the liquid in the gas-liquid separator through the liquid-phase medium outlet flange 5 with nitrogen, when no liquid is observed through the sight glass 10, turning the second three-way valve 14 to F1, opening the needle valve 20 and the needle valve 15, and starting the second check valve 11, purging the remaining gas in the pipeline from the gas-phase medium outlet flange, and after purging, closing all valves.

[0021] In one embodiment, as Figure 1 shown, a second needle valve 17 is provided between the pressure gauge 25 and the gas-liquid separator 16.

[0022] In one embodiment, as Figure 1 shown, a first purge valve 7 is provided between the first three-way valve 8 and the first check valve 9.

[0023] In one embodiment, as Figure 1 shown, the second three-way valve 14 and the fifth needle valve 23 are jointly connected to a needle-type ball valve 12.

[0024] In one embodiment, as Figure 1As shown, a first check valve 9 is provided between the nitrogen inlet flange 4 and the first three-way valve 8.

[0025] In one embodiment, as Figure 1 and Figure 2 shown, a jacket is provided on the upper part of the gas-liquid separator 16.

[0026] In one embodiment, as Figure 1 and Figure 2 shown, the inner tube of the gas-liquid separator 16 is semi-circular.

[0027] The above embodiments disclose a novel airtight sampling device for gas-liquid separation, wherein,

[0028] Sampling method 1: Sampling gas sample with a rubber balloon

[0029] When work is required, the coolant enters the jacket of the gas-liquid separator 16 from the second cooling water inlet flange 2 and exits from the first cooling water outlet flange 1 to circulate and form a cooling effect.

[0030] Turn the three-way ball valve 8 to F1, sequentially open the needle valve 20, the needle valve 21, the second purge valve 15, the first needle valve 13, start the second check valve 11, turn the second three-way valve 14 to F1, start circulating to make the medium in the pipeline circulate as a fresh sample. After the fresh sample in the pipeline replaces the old sample remaining in the pipeline, put the rubber balloon over the second needle valve 17, then close the needle valve 20 and the first needle valve 13, and after opening the second needle valve 17, the rubber balloon starts sampling. After sampling is completed, close the second needle valve 17 and remove the rubber balloon.

[0031] Open the first purge valve 7 and start the first check valve 9, turn the first three-way valve 8 to F2, open the first needle valve 13, turn the second three-way valve 14 to F2, and open the needle valve 23; purge the liquid in the gas-liquid separator with nitrogen through the liquid phase medium outlet flange 5. When no liquid is observed through the sight glass 10, turn the second three-way valve 14 to F1, open the needle valve 20 and the needle valve 15, and start the second check valve 11, and purge the remaining gas in the pipeline with nitrogen through the gas phase medium outlet flange. After purging is completed, close all valves.

[0032] Sampling method 2: Sampling liquid sample with a sampling bottle

[0033] When work is required, the coolant enters the jacket of the gas-liquid separator 16 from the second cooling water inlet flange 2 and exits from the first cooling water outlet flange 1 to circulate and form a cooling effect.

[0034] Turn the three-way ball valve 8 to F1, and successively open the needle valve 20, the needle valve 21, the second purge valve 15, and the first needle valve 13. Start the second check valve 11, turn the second three-way valve 14 to F1, and start circulating to make the medium in the pipeline circulate as a fresh sample. After the fresh sample in the pipeline replaces the old sample retained in the pipeline, close the first needle valve 13. When there is enough sample in the condensate tank in the middle and lower part of the gas-liquid separator 16, close the needle valve 24 and the needle valve 23. Turn the three-way ball valve 14 to F2, turn the three-way ball valve 8 to F2, open the first needle valve 13, place the sampling bottle behind the needle valve 12, open the needle valve 12 to start sampling, and after sampling is completed, close the needle valve 12 and remove the sampling bottle.

[0035] Open the first purge valve 7 and start the first check valve 9. Turn the first three-way valve 8 to F2, open the first needle valve 13, turn the second three-way valve 14 to F2, and open the needle valve 23; purge the liquid in the gas-liquid separator with nitrogen through the liquid-phase medium outlet flange 5. When no liquid is observed through the sight glass 10, turn the second three-way valve 14 to F1, and open the needle valve 24, the needle valve 20, the needle valve 21, and the needle valve 15, and start the second check valve 11. Purge the remaining gas in the pipeline with nitrogen through the gas-phase medium outlet flange. After purging is completed, close all valves.

[0036] Sampling method 3: Sampling from a closed steel cylinder

[0037] When work is required, the coolant enters the jacket of the gas-liquid separator 16 from the second cooling water inlet flange 2 and exits from the first cooling water outlet flange 1, circulating to form a cooling effect.

[0038] Turn the three-way ball valve 8 to F1, successively open the needle valve 20, the needle valve 21, the second purge valve 15, and the first needle valve 13. Turn the second three-way valve 14 to F1, start the second check valve 11, and start circulating to make the medium in the pipeline circulate as a fresh sample. After the fresh sample in the pipeline replaces the old sample retained in the pipeline, close the needle valve 21 and the first needle valve 13. The steel cylinder starts sampling. After sampling is completed, close the needle valve 24 and remove the steel cylinder.

[0039] Open the first purge valve 7 and start the first check valve 9. Turn the first three-way valve 8 to F2, open the first needle valve 13, turn the second three-way valve 14 to F2, and open the needle valve 23; purge the liquid in the gas-liquid separator with nitrogen through the liquid-phase medium outlet flange 5. When no liquid is observed, close all valves.

[0040] As described above, it is only the specific implementation manner of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present disclosure can easily think of changes or substitutions, which should all be covered within the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure shall be subject to the protection scope of the claims.

Claims

1. A novel closed sampling device for gas-liquid separation, comprising a first cooling water outlet flange (1) and a second cooling water inlet flange (2), wherein the first cooling water outlet flange (1) and the second cooling water inlet flange (2) are both connected to a gas-liquid separator (16), characterized in that: The upper end of the gas-liquid separator (16) is connected to a pressure gauge (25), a second needle valve (17) and a sixth needle valve (24) are provided between the gas-liquid separator (16) and the pressure gauge (25), the end of the pressure gauge (25) away from the gas-liquid separator (16) is connected to a sampling cylinder (18), a third needle valve (20) is provided between the pressure gauge (25) and the sampling cylinder (18), the end of the sampling cylinder (18) away from the pressure gauge (25) is connected to a high-pressure hose (22), a fourth needle valve (21) is provided between the pressure gauge (25) and the high-pressure hose (22), the medium inlet flange (3) and the nitrogen inlet flange (4) are both connected to the gas-liquid separator (16) through the first three-way valve (8), the bottom end of the gas-liquid separator (16) is connected to the second three-way valve (14), A first needle valve (13) is provided between the gas-liquid separator (16) and the second three-way valve (14); one end of the second three-way valve (14) is connected to the sight glass (10) via a fifth needle valve (23); one end of the sight glass (10) away from the fifth needle valve (23) is connected to the liquid medium outlet flange (5); the other end of the second three-way valve (14) is connected to the gas medium outlet flange (6); a second check valve (11) is provided between the second three-way valve (14) and the gas medium outlet flange (6); a second purge valve (15) is provided between the second check valve (11) and the second three-way valve (14); a high-pressure hose (22) is connected to the side of the second purge valve (15) away from the gas medium outlet flange (6); and the high-pressure hose (22) is connected to the sampling cylinder (18).

2. The novel closed sampling device for gas-liquid separation according to claim 1 is characterized in that: A second needle valve (17) is provided between the pressure gauge (25) and the gas-liquid separator (16).

3. The novel closed sampling device for gas-liquid separation according to claim 1 is characterized in that: A first purge valve (7) is provided between the first three-way valve (8) and the first one-way valve (9).

4. The novel closed sampling device for gas-liquid separation according to claim 1 is characterized in that: The second three-way valve (14) and the fifth needle valve (23) are connected to the needle ball valve (12).

5. The novel closed sampling device for gas-liquid separation according to claim 1 is characterized in that: A first one-way valve (9) is provided between the nitrogen inlet flange (4) and the first three-way valve (8).

6. The novel closed sampling device for gas-liquid separation according to claim 1 is characterized in that: The gas-liquid separator (16) is provided with a jacket on its upper portion.

7. The novel closed sampling device for gas-liquid separation according to claim 1 is characterized in that: The inner tube of the gas-liquid separator (16) is semi-arc-shaped.

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