Isotope low-temperature rectification sampling device

Abstract

The utility model discloses an isotope low-temperature rectification sampling device which comprises a rectification tower body and a gas outlet formed in one side of the rectification tower body, an annular cylinder is fixedly connected to one side of the rectification tower body, and a connecting plate is fixedly connected to one side of the rectification tower body and located below the annular cylinder. One side of the connecting plate is fixedly connected with a motor, and an output shaft of the motor is fixedly connected with a rotating rod through a coupling. According to the isotope low-temperature rectification sampling device, the rotating rod is controlled by the motor to rotate by 90 degrees, so that the rotating rod drives the ventilation opening in the blocking plate to rotate by 90 degrees, the ventilation opening is aligned with the gas outlet, and gas rectified by the rectification tower body enters the sampling pipe through the gas outlet and the ventilation opening by opening the electromagnetic control valve; therefore, the hydrogen-deuterium gas in different time periods can be conveniently sampled, the pollution degree between samples can be effectively reduced, and the purity of the hydrogen-deuterium gas sampling is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of distillation sampling, in particular to an isotope low-temperature distillation sampling device. Background Art

[0002] As one of the subsystems of the water detritiation research platform, the low-temperature distillation hydrogen isotope separation device plays a very important guiding role in the sampling and analysis of hydrogen and deuterium gases in the distillation column during the separation process. The sample gas obtained needs to be connected to the online analyzer for online analysis and needs to be collected for further analysis later.

[0003] During the cryogenic distillation process of isotopes, it is necessary to sample them at different time periods, but the usual sampling is done by switching the valves of the pipeline. Using the same pipeline to sample hydrogen and deuterium gases at different time periods will cause the residues of the previous sampling to mix into the next sampling, affecting the purity of the hydrogen and deuterium gas sampling. Therefore, a high-purity isotope cryogenic distillation sampling device is proposed. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides an isotope cryogenic distillation sampling device, which solves the problem that using the same pipeline to sample hydrogen and deuterium gases at different time periods may cause the residues of the previous sampling to mix into the next sampling.

[0005] To achieve the above objectives, the utility model is implemented through the following technical solutions: an isotope low-temperature distillation sampling device, comprising a distillation tower body and an air outlet opened on one side of the distillation tower body, one side of the distillation tower body is fixedly connected with an annular cylinder, one side of the distillation tower body and a connecting plate is fixedly connected below the annular cylinder, one side of the connecting plate is fixedly connected with a motor, the output shaft of the motor is fixedly connected with a rotating rod through a coupling, one end of the rotating rod is fixedly connected with a sealing plate, the outer surface of the rotating rod and the inside of the annular cylinder is fixedly connected with a circular plate, one side of the circular plate is provided with a plurality of sampling mechanisms, and one side of the sealing plate is provided with a plurality of vents compatible with the sampling mechanisms.

[0006] Preferably, the sampling mechanism comprises a mounting hole, the mounting hole is opened on one side of the circular plate, a sampling tube is slidably connected inside the mounting hole, and an electromagnetic control valve is provided on one side of the outer surface of the sampling tube.

[0007] Preferably, a limit plate is fixedly connected to the outer surface of the sampling tube and located on one side of the electromagnetic control valve, and a plurality of limit cylinders are fixedly connected to one side of the circular plate.

[0008] Preferably, the interior of the limiting cylinder is slidably connected to a limiting rod, and one end of the limiting rod is rotatably connected to an extrusion plate matched with the limiting plate through a bearing.

[0009] Preferably, a spring is fixedly connected between one side of the inner cavity of the limiting cylinder and the other end of the limiting rod.

[0010] Beneficial Effects

[0011] The utility model provides an isotope cryogenic distillation sampling device. Compared with the existing technology, it has the following beneficial effects:

[0012] (1) The utility model controls the rotating rod to rotate 90 degrees through a motor, so that the rotating rod drives the vent on the sealing plate to rotate 90 degrees, so that the vent is aligned with the gas outlet. By opening the electromagnetic control valve, the gas distilled by the distillation tower body will enter the sampling tube through the gas outlet and the vent, so that the hydrogen and deuterium gas at different time periods can be sampled conveniently, which can effectively reduce the contamination degree between samples and improve the purity of hydrogen and deuterium gas sampling.

[0013] (2) The utility model rotates the extrusion plate so that the extrusion plate no longer blocks the limiting plate and pulls the sampling tube to the left, thereby conveniently moving the sampling tube out of the mounting hole and the vent, and conveniently removing the sampling tube, cleaning it, and then reinstalling it. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the external structure of the utility model;

[0015] Figure 2 A bottom view of the structure of the utility model;

[0016] Figure 3 This is a schematic diagram of the internal structure of the distillation tower body, the gas outlet and the annular cylinder of the utility model;

[0017] Figure 4 It is a structural schematic diagram of the motor, rotating rod, blocking plate, circular plate and sampling mechanism of the utility model;

[0018] Figure 5 It is a structural schematic diagram of the motor, rotating rod, blocking plate, circular plate, mounting hole and vent of the utility model;

[0019] Figure 6 This is a schematic diagram of the structure of the sampling tube, electromagnetic control valve, blocking plate, circular plate and vent of the utility model;

[0020] Figure 7 The utility model is a schematic structural diagram of a limit plate, a limit cylinder, a limit rod, an extrusion plate, a spring and a sampling tube.

[0021] In the figure: 1. distillation tower body; 2. gas outlet; 3. annular cylinder; 4. connecting plate; 5. motor; 6. rotating rod; 7. sealing plate; 8. circular plate; 9. sampling mechanism; 10. vent; 11. limit plate; 12. limit cylinder; 13. limit rod; 14. extrusion plate; 15. spring; 91. mounting hole; 92. sampling tube; 93. electromagnetic control valve. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0023] See also Figure 1-7 The utility model provides a technical solution: an isotope low-temperature distillation sampling device, comprising a distillation tower body 1 and an air outlet 2 opened on one side of the distillation tower body 1, an annular cylinder 3 is fixedly connected to one side of the distillation tower body 1, a connecting plate 4 is fixedly connected to one side of the distillation tower body 1 and located below the annular cylinder 3, a motor 5 is fixedly connected to one side of the connecting plate 4, the motor 5 is a servo motor, electrically connected to an external power supply, and controlled by a control switch, the output shaft of the motor 5 is fixedly connected to a rotating rod 6 through a coupling, one end of the rotating rod 6 is fixedly connected to a blocking plate 7, a circular plate 8 is fixedly connected to the outer surface of the rotating rod 6 and located inside the annular cylinder 3, a plurality of sampling mechanisms 9 are arranged on one side of the circular plate 8, a plurality of vents 10 adapted to the sampling mechanism 9 are opened on one side of the blocking plate 7, the sampling mechanism 9 comprises a mounting hole 91, the mounting hole 91 is opened on one side of the circular plate 8, a sampling tube 92 is slidably connected to the inside of the mounting hole 91, and an electromagnetic control valve 93 is arranged on one side of the outer surface of the sampling tube 92.

[0024] It should be noted that the blocking plate 7 is made of rubber. Normally, the vent 10 on the blocking plate 7 is not aligned with the air outlet 2, which will block the air outlet 2.

[0025] Furthermore, in order to facilitate the disassembly of the sampling tube 92 after sampling, the outer surface of the sampling tube 92 and one side of the electromagnetic control valve 93 is fixedly connected to a limit plate 11, and one side of the circular plate 8 is fixedly connected to a plurality of limit cylinders 12. The interior of the limit cylinder 12 is slidably connected to a limit rod 13. One end of the limit rod 13 is rotatably connected to an extrusion plate 14 that is compatible with the limit plate 11 through a bearing, and a spring 15 is fixedly connected between one side of the inner cavity of the limit cylinder 12 and the other end of the limit rod 13.

[0026] When sampling is required, the motor 5 is controlled to drive the rotating rod 6 to rotate 90 degrees, and the rotating rod 6 will drive the blocking plate 7 and the circular plate 8 to rotate 90 degrees, so that the vent 10 on the blocking plate 7 is aligned with the gas outlet 2, and the electromagnetic control valve 93 on the sampling tube 92 at the same level as the gas outlet 2 is opened, and the gas outlet 2 will allow the gas generated by the distillation in the distillation tower body 1 to enter the sampling tube 92, and then the electromagnetic control valve 93 is closed, and the blocking plate 7 is rotated 90 degrees again, and the gas will be collected from the next sampling tube 92 through the next vent 10, and the sampling is performed in sequence by reciprocating operation;

[0027] After the gas sampling is completed, the corresponding squeezing plate 14 is rotated so that the squeezing plate 14 no longer blocks the limiting plate 11. The sampling tube 92 can be slid out of the mounting hole 91 and the vent 10 by pulling the sampling tube 92 to the left, and then a new sampling tube 92 is inserted into the mounting hole 91 and the vent 10. The squeezing plate 14 is rotated onto the limiting plate 11, and the limiting rod 13 is used to limit the sampling tube 92 in the mounting hole 91 through the squeezing plate 14 and the limiting plate 11 through the force of the spring 15.

Claims

1. An isotope cryogenic distillation sampling device, comprising a distillation tower body (1) and a gas outlet (2) opened on one side of the distillation tower body (1), characterized in that: An annular cylinder (3) is fixedly connected to one side of the distillation tower body (1); a connecting plate (4) is fixedly connected to one side of the distillation tower body (1) and located below the annular cylinder (3); a motor (5) is fixedly connected to one side of the connecting plate (4); an output shaft of the motor (5) is fixedly connected to a rotating rod (6) via a coupling; one end of the rotating rod (6) is fixedly connected to a sealing plate (7); a circular plate (8) is fixedly connected to the outer surface of the rotating rod (6) and located inside the annular cylinder (3); a plurality of sampling mechanisms (9) are arranged on one side of the circular plate (8); and a plurality of vents (10) adapted to the sampling mechanisms (9) are opened on one side of the sealing plate (7).

2. The isotope cryogenic distillation sampling device according to claim 1, characterized in that: The sampling mechanism (9) comprises a mounting hole (91), wherein the mounting hole (91) is opened on one side of the circular plate (8), a sampling tube (92) is slidably connected inside the mounting hole (91), and an electromagnetic control valve (93) is provided on one side of the outer surface of the sampling tube (92).

3. The isotope cryogenic distillation sampling device according to claim 2, characterized in that: A limiting plate (11) is fixedly connected to the outer surface of the sampling tube (92) and located on one side of the electromagnetic control valve (93), and a plurality of limiting cylinders (12) are fixedly connected to one side of the circular plate (8).

4. The isotope cryogenic distillation sampling device according to claim 3, characterized in that: The interior of the limiting cylinder (12) is slidably connected to a limiting rod (13), and one end of the limiting rod (13) is rotatably connected to an extrusion plate (14) adapted to the limiting plate (11) via a bearing.

5. The isotope cryogenic distillation sampling device according to claim 4, characterized in that: A spring (15) is fixedly connected between one side of the inner cavity of the limiting cylinder (12) and the other end of the limiting rod (13).

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