Pipeline safety sampling device for poisonous gas participating in reaction

Abstract

The utility model discloses a pipeline safety sampling device for poisonous gas participating in reaction, and belongs to the technical field of fine chemical engineering. A pipeline safety sampling device for poisonous gas participating in a reaction comprises a liquid conveying pipeline and further comprises a sampling box, the liquid conveying pipeline penetrates through the sampling box, and a sample outlet is formed in the section, located in the sampling box, of the liquid conveying pipeline; the sampling bottle is arranged in the sampling box and is used for receiving a sample discharged from the sample outlet; the toxic gas alarm is mounted on the sampling box; through sealing of the sampling box, poisonous gas is isolated from the surrounding environment, through linkage of the PLC and the electrically operated valve, the one-key sampling process is completed, meanwhile, through linkage of alarm signals of the poisonous gas alarm, starting of the spraying assembly and closing of a cabin door of the sampling box are synchronously controlled, sampling operation is facilitated, and meanwhile the sampling efficiency is improved. The safety of operators is guaranteed, and the risk of environmental pollution caused by toxic gas is reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of sampling devices for pipeline transportation of materials in fine chemical industry, and in particular to a safety sampling device for pipelines where toxic gases participate in reactions. Background Technology

[0002] In many fields such as chemical production, environmental monitoring, and scientific research, it is often necessary to sample and analyze materials in pipelines containing toxic gases involved in reactions to obtain key information such as reaction progress and product composition, thereby optimizing production processes, ensuring environmental safety, or advancing scientific research projects. However, the presence of toxic gases presents a serious challenge in actual sampling operations.

[0003] Hydrogen sulfide, for example, is not only highly toxic but also has a strong, pungent odor. Inhaling a certain concentration of hydrogen sulfide within a short period can lead to coma or even death.

[0004] In traditional sampling processes, due to the lack of effective protection and handling measures, toxic gases will inevitably escape into the surrounding environment through the sampling port, which poses a direct threat to the health of operators. Even if operators wear protective equipment, the protective effect of the equipment may decrease if they are exposed to a toxic gas leak environment for a long time, increasing the risk of poisoning.

[0005] Furthermore, the release of toxic gases into the air can cause serious pollution to the surrounding environment. These gases may also spread with the wind, affecting the air quality of the surrounding area, which presents certain shortcomings.

[0006] Therefore, a pipeline safety sampling device for reactions involving toxic gases is provided to solve the problems mentioned above. Utility Model Content

[0007] The purpose of this invention is to solve the problems mentioned in the background art and to propose a pipeline safety sampling device for reactions involving toxic gases.

[0008] To achieve the above objectives, the present invention adopts the following technical solution:

[0009] A pipeline safety sampling device for reactions involving toxic gases, comprising an infusion pipeline, and further comprising:

[0010] The sampling box has an infusion pipeline that runs through it, and a sample outlet is provided on a section of the infusion pipeline located in the sampling box.

[0011] Sampling bottles are placed inside the sampling box to collect samples discharged from the sampling port;

[0012] A toxic gas detector is installed on the sampling box, with the detection end located inside the sampling box;

[0013] A magnetic lock is installed on the sampling box to lock the sampling box;

[0014] A spray absorption tower, wherein a connecting pipe is provided on the exhaust port at the top of the spray absorption tower, and a fan is installed at the other end of the connecting pipe;

[0015] An exhaust vent is located at the top of the sampling box, and the outlet of the exhaust vent is connected to the spray absorption tower.

[0016] A spray assembly, installed inside the spray absorption tower, is used to neutralize toxic gases.

[0017] Preferably, a three-way valve is also provided. The three-way valve is a T-type three-way valve, which is installed on the infusion pipeline. Both ends are connected to the infusion pipeline, and the other end is a sample outlet. Electric valve one and electric valve two are connected in sequence to the sample outlet. The inlet of the sampling bottle is connected to the outlet of electric valve two.

[0018] Preferably, the spray assembly includes a circulating pump and a nozzle. The nozzle is installed inside the spray absorption tower and connected to the liquid outlet of the circulating pump. The circulating pump is used to draw out the liquid in the spray absorption tower and then spray it through the nozzle, so that it comes into contact with the gas discharged from the exhaust port.

[0019] Preferably, an exhaust pipe is connected to the exhaust port, and the exhaust pipe is connected to the spray absorption tower.

[0020] Preferably, a PLC controller is installed on the sampling box, and the PLC controller is used to control electric valve one, electric valve two, circulating pump and fan.

[0021] Preferably, the alarm signal of the toxic gas detector is connected to both the magnetic lock and the PLC controller.

[0022] Compared with the prior art, this utility model provides a pipeline safety sampling device for reactions involving toxic gases, which has the following beneficial effects:

[0023] This invention isolates toxic gases from the surrounding environment through the sealing of the sampling box. The process of one-button sampling is completed through the linkage of the PLC controller and the electric valve. At the same time, the start of the spray assembly and the closing of the sampling box door are controlled synchronously through the interlocking of the alarm signal of the toxic gas alarm. While facilitating the sampling operation, it ensures the safety of the operators and reduces the risk of toxic gas pollution to the environment. Attached Figure Description

[0024] Figure 1 This invention provides a structural schematic diagram of a pipeline safety sampling device for reactions involving toxic gases. Figure 1 ;

[0025] Figure 2 This invention provides a structural schematic diagram of a pipeline safety sampling device for reactions involving toxic gases. Figure 2 ;

[0026] Figure 3 This utility model proposes a safety sampling device for pipelines where toxic gases participate in reactions. Figure 2 A schematic diagram of the structure of part A;

[0027] Figure 4 This invention provides a structural schematic diagram of a pipeline safety sampling device for reactions involving toxic gases. Figure 3 .

[0028] In the diagram: 1. Sampling box; 2. Infusion line; 3. Toxic gas alarm; 4. Magnetic lock; 5. Electric valve one; 6. Electric valve two; 7. Exhaust line; 8. PLC controller; 9. Circulating pump; 10. Fan; 11. Spray absorption tower; 12. Spray nozzle; 13. Sampling bottle. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0030] Example:

[0031] Reference Figure 1-4A pipeline safety sampling device for reactions involving toxic gases includes an infusion pipeline 2, and further includes: a sampling box 1, with the infusion pipeline 2 passing through the sampling box 1 and a sample outlet located on a section of the infusion pipeline 2 within the sampling box 1; a sampling bottle 13, located inside the sampling box 1, for receiving samples discharged from the sample outlet; a toxic gas alarm 3, installed on the sampling box 1, with its detection end located inside the sampling box 1; a magnetic lock 4, installed on the sampling box 1, for locking the sampling box 1; a spray absorption tower 11, with a connecting pipe installed on the exhaust port at the top of the spray absorption tower 11, and a fan 10 installed at the other end of the connecting pipe; an exhaust port, located at the top of the sampling box 1, with the exhaust end of the exhaust port connected to the spray absorption tower 11; a spray assembly, located inside the spray absorption tower 11, for neutralizing toxic gases; and a three-way valve, which is a T-type three-way valve, and is equipped with... On the infusion line 2, both ends are connected to the infusion line 2, and the other end is a sample outlet. Electric valve 5 and electric valve 6 are connected in sequence to the sample outlet. The inlet of the sampling bottle 13 is connected to the outlet of electric valve 6. The spray assembly includes a circulation pump 9 and a nozzle 12. The nozzle 12 is installed in the spray absorption tower 11 and is connected to the liquid outlet of the circulation pump 9. The circulation pump 9 is used to draw out the liquid in the spray absorption tower 11 and then spray it through the nozzle 12, which comes into contact with the gas discharged from the exhaust port. An exhaust line 7 is connected to the exhaust port and is connected to the spray absorption tower 11. A PLC controller 8 is installed on the sampling box 1. The PLC controller 8 is used to control electric valve 5, electric valve 6, circulation pump 9 and fan 10. The alarm signal of the toxic gas alarm 3 is connected to the magnetic lock 4 and the PLC controller 8 respectively.

[0032] Based on the chemical property that hydrogen sulfide can react with alkaline solutions, an appropriate amount of sodium hydroxide solution is added to the spray absorption tower 11 as the absorbent. A clean sampling bottle 13 is placed in a suitable position in the sampling box 1. The sampling bottle 13 is equipped with an inlet and an outlet to facilitate the entry of gas and to expel excess gas through pressure changes. The inlet and outlet of the sampling bottle 13 are connected. The operator, in a safe area away from the sampling box 1, presses the sampling button on the PLC controller 8. After receiving the instruction, the PLC controller 8 follows the preset program, first opening the electric valve 5, allowing the reaction liquid in the pipeline to flow into the pipeline in the sampling box 1 under pressure. After a period of time, the electric valve 5 is closed. Then, the electric valve 6 is opened, allowing the reaction liquid to continue flowing into the sampling bottle 13. After reaching the predetermined sampling volume, the electric valve 6 is closed, completing the sampling.

[0033] If hydrogen sulfide gas escapes from the reaction liquid during the sampling process, the toxic gas alarm 3 detects that the hydrogen sulfide concentration exceeds the standard and immediately issues an alarm signal. The alarm signal activates the magnetic lock 4, preventing the sampling box 1 door from being opened and preventing operators from accidentally opening the sampling box 1 and coming into contact with toxic gas. On the other hand, it feeds the signal back to the PLC controller 8. After receiving the signal, the PLC controller 8 quickly starts the circulation pump 9 and the fan 10. The fan 10 starts working and generates negative pressure in the exhaust pipe 7 and the sampling box 1, which draws the hydrogen sulfide gas in the sampling box 1 into the spray absorption tower 11 through the exhaust pipe 7. At the same time, the circulation pump 9 continuously circulates and sprays the sodium hydroxide solution at the bottom of the spray absorption tower 11, which fully contacts the hydrogen sulfide gas entering the tower to react chemically and absorb it.

[0034] When the concentration of hydrogen sulfide gas in sampling box 1 drops below the safe value under the monitoring of the alarm, the alarm stops. At this time, due to the interruption of the alarm signal, the magnetic lock 4 returns to the open state, and the operator can open the sampling box 1 to take out the sampling bottle 13. At the same time, after receiving the alarm stop signal, the PLC controller 8 controls the circulation pump 9 and the fan 10 to stop working. After completing one sampling operation, the device is inspected to prepare for the next sampling.

[0035] This invention isolates toxic gases from the surrounding environment through the sealing of the sampling box 1. The one-button sampling process is completed through the linkage of the PLC controller 8 and the electric valve. At the same time, the start of the spray assembly and the closing of the sampling box 1 are synchronously controlled by the alarm signal of the toxic gas alarm 3. This facilitates the sampling operation, ensures the safety of the operators, and reduces the risk of toxic gas pollution to the environment.

[0036] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A pipeline safety sampling device for reactions involving toxic gases, comprising an infusion pipeline (2), characterized in that, Also includes: The sampling box (1) has an infusion line (2) that passes through it, and the infusion line (2) has a sample outlet on a section of the sampling box (1). A sampling bottle (13) is placed inside the sampling box (1) to receive the sample discharged from the sampling port; A toxic gas alarm (3) is installed on the sampling box (1), and the detection end is located inside the sampling box (1); A magnetic lock (4) is installed on the sampling box (1) to lock the sampling box (1); A spray absorption tower (11) is provided with a connecting pipe at the top exhaust port of the spray absorption tower (11), and a fan (10) is installed at the other end of the connecting pipe. An exhaust port is provided at the top of the sampling box (1), and the outlet end of the exhaust port is connected to the spray absorption tower (11). A spray assembly is installed inside the spray absorption tower (11) for neutralizing toxic gases.

2. The pipeline safety sampling device for toxic gas reactions according to claim 1, characterized in that, Also includes: The three-way valve is a T-type three-way valve, which is installed on the infusion line (2). Both ends are connected to the infusion line (2), and the other end is a sample outlet. The sample outlet is connected in sequence to electric valve one (5) and electric valve two (6). The inlet of the sampling bottle (13) is connected to the outlet of electric valve two (6).

3. A pipeline safety sampling device for reactions involving toxic gases according to claim 2, characterized in that, The spray assembly includes a circulating pump (9) and a nozzle (12). The nozzle (12) is installed inside the spray absorption tower (11) and connected to the liquid outlet of the circulating pump (9). The circulating pump (9) is used to draw out the liquid in the spray absorption tower (11) and then spray it through the nozzle (12) to contact the gas discharged from the exhaust port.

4. A pipeline safety sampling device for reactions involving toxic gases according to claim 3, characterized in that, An exhaust pipe (7) is connected to the exhaust port, and the exhaust pipe (7) is connected to the spray absorption tower (11).

5. A pipeline safety sampling device for reactions involving toxic gases according to claim 3, characterized in that, The sampling box (1) is equipped with a PLC controller (8), which is used to control electric valve one (5), electric valve two (6), circulating pump (9) and fan (10).

6. A pipeline safety sampling device for reactions involving toxic gases according to claim 5, characterized in that, The alarm signal of the toxic gas alarm (3) is connected to the magnetic lock (4) and the PLC controller (8) respectively.

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