Carbon tritium sampler

Abstract

The application relates to a carbon tritium sampler, which relates to the technical field of sampling equipment and comprises a box body, a sampling head installed on the box body, a plurality of sampling bottles sequentially communicated through a sampling gas path installed in the box body, a circulating cooling device, at least one exhaust pipe and an exhaust passage communicated with the outside world. The sampling bottle located at the first position is communicated with the sampling head through a fan, and the sampling bottle located at the last position is communicated with the outside world. The circulating cooling device comprises a cooling liquid circulating assembly and a cooling fan for cooling the cooling liquid circulating assembly. At least one exhaust pipe is installed in the box body, the exhaust pipe is provided with an exhaust passage communicated with the outside world, the air inlet of the cooling fan is communicated with the outside world, and the outside air is exhausted through the cooling fan, cooled to the cooling liquid circulating assembly and then enters the exhaust passage. The application can effectively and quickly cool the solution in the sampling bottle, is not affected by the temperature in the box body, improves the sampling stability, maintains the normal sampling and the like.

Description

Technical Field

[0001] This utility model relates to the field of sampling equipment technology, and in particular to a carbon-tritium sampler. Background Technology

[0002] During the operation of nuclear facilities, the emission monitoring of tritium and carbon, as radionuclides of high environmental concern, is crucial. Tritium readily forms tritium water and enters the water cycle, while carbon participates in the global carbon cycle and may exacerbate the greenhouse effect. Therefore, it is necessary to capture tritium and carbon compounds in emitted gases using sampling devices. Existing carbon-tritium samplers are typically equipped with catalytic oxidation devices to convert compounds such as hydrogen tritide and methane in exhaust gases, which are difficult to absorb directly by solution, into easily absorbed tritium water and carbon dioxide through catalytic oxidation reactions, thereby improving subsequent absorption efficiency. However, during the catalytic oxidation process, the high-temperature operating state of the catalyst itself and the exothermic reaction release a large amount of heat into the chamber, causing a significant increase in the internal temperature of the chamber.

[0003] To suppress the evaporation of moisture inside the sampling bottle due to high temperatures and maintain solution stability, existing devices generally employ a circulating cooling system to cool the sampling bottle. However, in traditional designs, the cooling fan in the circulating cooling system is only located inside the enclosure, and its air intake and exhaust are confined to the enclosure, easily leading to internal air circulation.

[0004] This design prevents the cooling fan from quickly exchanging heat between the circulating cooling system and the external environment, resulting in slow heat dissipation. Furthermore, as the catalytic oxidation device continues to generate heat, the internal temperature gradually accumulates, significantly reducing the cooling efficiency of the circulating cooling water. This makes it difficult to effectively control the water evaporation rate in the sampling bottles, thus affecting the sampling stability of tritium and carbon, and even hindering the normal sampling of tritium and carbon. Utility Model Content

[0005] In view of this, the technical problem to be solved by this utility model is to provide a carbon-tritium sampler that can effectively and quickly cool the solution in the sampling bottle, is not affected by the temperature inside the chamber, improves sampling stability, and maintains the normal operation of sampling.

[0006] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows:

[0007] A carbon-tritium sampler includes a housing with a sampling head mounted on it. Several sampling bottles are installed inside the housing and connected sequentially through a sampling gas path. Along the sampling gas flow path, the first sampling bottle is connected to the sampling head via a fan, and the last sampling bottle is connected to the outside.

[0008] The chamber is equipped with a circulating cooling device for cooling the sampling bottle. The circulating cooling device includes a coolant circulation assembly and a cooling fan. The cooling fan is used to cool the coolant circulation assembly.

[0009] The enclosure is equipped with at least one exhaust pipe, which is a hollow structure and has an exhaust duct that communicates with the outside. The air inlet of the cooling fan is connected to the outside. Outside air is discharged through the cooling fan and cools the coolant circulation assembly before entering the exhaust duct.

[0010] Preferably, the coolant circulation assembly includes heat exchange tubes, a circulation pump, and a radiator;

[0011] The heat exchange tube is housed inside the sampling bottle, and both the inlet and outlet ends of the heat exchange tube are located outside the sampling bottle. The inlet end of the heat exchange tube is connected to the outlet of the circulating pump.

[0012] The radiator includes a radiator body and heat dissipation fins connected thereto. The liquid inlet of the radiator body is connected to the liquid return end of the heat exchange tube, and the liquid outlet of the radiator body is connected to the liquid return port of the circulation pump. The exhaust port of the cooling fan is directly opposite the heat dissipation fins, and the heat dissipation air ducts inside the heat dissipation fins are connected to the exhaust air ducts.

[0013] Preferably, the cooling fan is mounted on the housing, and the air inlet of the cooling fan is located on the side wall of the housing.

[0014] Preferably, there are two exhaust pipes, which are vertically arranged above and below the heat dissipation fins, and the heat dissipation air ducts in the heat dissipation fins are connected to the exhaust air ducts in the two exhaust pipes.

[0015] Preferably, two vertically arranged upright plates are installed between the two exhaust pipes, and fastening components are provided between the upright plates and the exhaust pipes.

[0016] Preferably, the fastening assembly includes a connecting lug fixed to the exhaust pipe, and a fastening bolt passes through the connecting lug to fix the exhaust pipe to the upright plate.

[0017] Preferably, the number and position of the heat exchange tube, the circulating pump, the radiator, and the sampling bottle correspond one-to-one.

[0018] Preferably, the sampling bottle includes sampling bottle one, sampling bottle two, sampling bottle three and sampling bottle four connected sequentially through the sampling gas path, and the catalytic device is connected between sampling bottle two and sampling bottle three.

[0019] Preferably, the exhaust duct is a square tube.

[0020] After adopting the above technical solution, the beneficial effects of this utility model are:

[0021] The carbon-tritium sampler of this application includes a housing with a sampling head mounted on it. Several sampling bottles, sequentially connected via a sampling gas path, are installed inside the housing. The first sampling bottle is connected to the sampling head via a fan, while the last sampling bottle is connected to the outside environment. Each sampling bottle contains a solution for sampling carbon and tritium. For example, sodium hydroxide solution is used for carbon sampling, and deionized water is used for tritium sampling. By selecting different solutions, carbon and tritium can be sampled separately or simultaneously. The gaseous carbon and tritium are catalyzed by a catalytic device to form carbon dioxide or tritized water, which can then be sampled by the solution, improving sampling accuracy and efficiency. In the above structure, the sampling head, sampling bottles, fan, and catalytic device are all well-known technologies in this field, and their specific structures will not be described in detail here.

[0022] The box of this application is equipped with a circulating cooling device, which is used to cool the sampling bottle. The circulating cooling device includes a coolant circulation component and a cooling fan. The cooling fan is used to cool the coolant circulation component. The coolant circulation component is used to cool the solution in the sampling bottle. By lowering its temperature, the evaporation of water in the sampling bottle can be reduced and the stability of the solution can be maintained, thus ensuring the normal sampling process.

[0023] The chamber contains at least one hollow exhaust duct that connects to the outside environment. The cooling fan's inlet is also connected to the outside. Outside air is exhausted by the cooling fan, cooling the coolant circulation components before entering the exhaust duct. Driven by the cooling fan, the outside air flows through the coolant circulation components, undergoing heat exchange and carrying away heat, creating hot air. This hot air is then directly exhausted from the chamber through the exhaust duct. This creates a circulating airflow path where outside air enters, cools, and then exits to the outside. This design changes the traditional structure where the cooling fan is installed inside the chamber, replacing internal circulation with external circulation, thus increasing the heat dissipation speed. It enables rapid and effective cooling of the solution in the sampling bottle, improving the stability of carbon and tritium sampling and ensuring normal sampling. Attached Figure Description

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0025] Figure 1 This is a schematic diagram of the structure of the carbon-tritium sampler according to an embodiment of this utility model;

[0026] Figure 2 yes Figure 1 A structural diagram from another direction;

[0027] Figure 3 yes Figure 2 A schematic diagram showing that one sampling bottle corresponds to one coolant circulation component and one cooling fan;

[0028] Figure 4 yes Figure 1 The main view;

[0029] Figure 5 yes Figure 1 A schematic diagram of the structure of the medium carbon tritium sampler after the enclosure is installed;

[0030] In the picture:

[0031] 1. Housing; 11. Sampling head; 12. Sampling gas path;

[0032] 2. Sampling bottle; 21. Fan; 22. Sampling bottle one; 23. Sampling bottle two; 24. Sampling bottle three; 25. Sampling bottle four;

[0033] 3. Catalytic converter;

[0034] 4. Circulating cooling device; 41. Coolant circulation assembly; 42. Cooling fan; 43. Heat exchange tube; 44. Circulating pump; 45. Radiator; 451. Radiator body; 452. Cooling fins; 46. Vertical plate; 47. Fastening assembly; 471. Fastening bolt; 472. Connecting lug;

[0035] 5. Exhaust duct; 51. Exhaust channel. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0037] like Figures 1 to 5 As shown in the figure, the present invention includes a housing 1, a sampling head 11 is installed on the housing 1, and a plurality of sampling bottles 2 are installed inside the housing 1 and connected sequentially through a sampling gas path 12; along the sampling gas flow path, the first sampling bottle 2 is connected to the sampling head 11 through a fan 21, and the last sampling bottle 2 is connected to the outside.

[0038] Sampling bottle 2 contains solutions for sampling carbon and tritium. For example, if carbon needs to be sampled, sodium hydroxide solution is used; if tritium needs to be sampled, deionized water is used. By selecting different solutions, carbon and tritium can be sampled separately or simultaneously. The gaseous carbon and tritium, after being oxidized and catalyzed by the catalytic device 3, form carbon dioxide or tritized water that can be sampled by the solution, thus improving sampling accuracy and efficiency. In the above structure, the sampling head 11, sampling bottle 2, fan 21, and catalytic device 3 are all well-known technologies in this field, and their specific structures will not be described in detail here.

[0039] The housing 1 is equipped with a circulating cooling device 4, which is used to cool the sampling bottle 2. The circulating cooling device 4 includes a coolant circulation component 41 and a cooling fan 42. The cooling fan 42 is used to cool the coolant circulation component 41. The coolant circulation component 41 is used to cool the solution in the sampling bottle 2. By lowering its temperature, the evaporation of water in the sampling bottle 2 can be reduced and the stability of the solution can be maintained, thus ensuring the normal sampling process.

[0040] At least one exhaust pipe 5 is installed inside the housing 1. The exhaust pipe 5 has a hollow structure and an exhaust duct 51 that connects to the outside. The air inlet of the cooling fan 42 is connected to the outside. Outside air is discharged through the cooling fan 42 and enters the exhaust duct 51 after cooling the coolant circulation component 41.

[0041] After being driven by the cooling fan 42, the outside air flows through the coolant circulation component 41. Through heat exchange, the heat in the coolant circulation component 41 is carried away, forming hot air. The hot air is directly discharged from the box 1 through the exhaust duct 51. Thus, a circulating heat dissipation airflow path is formed, in which outside air enters, cools down, and is then discharged to the outside. This changes the traditional structure of installing the cooling fan 42 inside the box 1, replacing the original internal circulation of the box 1 with external circulation of the box 1. This improves the heat dissipation speed and can quickly and effectively cool down the solution in the sampling bottle 2, improving the stability of carbon tritium sampling and ensuring normal sampling.

[0042] In this application, the coolant circulation assembly 41 includes a heat exchange tube 43, a circulation pump 44, and a radiator 45; wherein, the heat exchange tube 43 is housed inside the sampling bottle 2, and the inlet and outlet ends of the heat exchange tube 43 are located outside the sampling bottle 2, and the inlet end of the heat exchange tube 43 is connected to the outlet of the circulation pump 44; preferably, the heat exchange tube 43 is a U-shaped tube or a spiral tube to increase the heat exchange area.

[0043] The radiator 45 includes a radiator body 451 and heat dissipation fins 452 connected thereto. The liquid inlet of the radiator body 451 is connected to the liquid return end of the heat exchange tube 43, and the liquid outlet of the radiator body 451 is connected to the liquid return port of the circulation pump 44. The exhaust port of the cooling fan 42 is directly opposite the heat dissipation fins 452, and the heat dissipation air duct inside the heat dissipation fins 452 is connected to the exhaust air duct 51.

[0044] Preferably, the cooling fan 42 is mounted on the housing 1, and the air inlet of the cooling fan 42 is located on the side wall of the housing 1.

[0045] The exhaust duct 5 is a square tube, and there are two exhaust ducts 5. The two exhaust ducts 5 are vertically arranged above and below the heat dissipation fins 452, and the heat dissipation air ducts inside the heat dissipation fins 452 are connected to the exhaust air ducts 51 inside the two exhaust ducts 5. By setting two exhaust ducts 5, the exhaust speed of the cooling fan 42 can be accelerated, and the cooling efficiency can be improved.

[0046] Among them, two vertically arranged upright plates 46 are installed between the two rows of air ducts 5, and fastening components 47 are provided between the upright plates 46 and the air ducts 5.

[0047] The fastening assembly 47 includes a connecting lug 472 fixed to the exhaust pipe 5, and a fastening bolt 471 passes through the connecting lug 472 to fix the exhaust pipe 5 to the upright plate 46.

[0048] In this application, the number and position of the heat exchange tubes 43, circulation pump 44, and radiator 45 correspond one-to-one with those of the sampling bottles 2. The sampling bottles 2 include sampling bottle one 22, sampling bottle two 23, sampling bottle three 24, and sampling bottle four 25, which are sequentially connected via a sampling gas path. The catalytic device 3 is connected between sampling bottle two 23 and sampling bottle three 24. Each sampling bottle 2 is cooled by an independently corresponding coolant circulation assembly 41, improving the cooling rate.

[0049] In summary, the carbon-tritium sampler of this application can effectively and rapidly cool the solution in the sampling bottle 2, unaffected by the temperature inside the chamber 1, thereby improving sampling stability and maintaining the normal operation of the sampling process.

[0050] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A carbon tritium sampler comprising a box body, a sampling head mounted on the box body, and a plurality of sampling bottles sequentially connected by a sampling gas path in the box body; the first sampling bottle in the sampling gas flow path is connected with the sampling head by a fan, and the last sampling bottle is connected with the outside; characterized in that, a circulating cooling device is mounted in the box body, the circulating cooling device is used for cooling the sampling bottles, and the circulating cooling device comprises a cooling liquid circulating assembly and a cooling fan, and the cooling fan is used for cooling the cooling liquid circulating assembly; at least one exhaust pipe is mounted in the box body, the exhaust pipe is a hollow structure and is provided with an exhaust passage connected with the outside, and the air inlet of the cooling fan is connected with the outside; the cooling liquid circulating assembly comprises a heat exchange pipe, a circulating pump and a radiator; 2. The carbonic hydrogen sampling device of claim 1, wherein, the heat exchange pipe is contained in the sampling bottle, the liquid inlet end and the liquid return end of the heat exchange pipe are located outside the sampling bottle, and the liquid inlet end of the heat exchange pipe is connected with the liquid outlet of the circulating pump; the radiator comprises a radiator body and a plurality of radiator fins connected with the radiator body, the liquid inlet of the radiator body is connected with the liquid return end of the heat exchange pipe, the liquid outlet of the radiator body is connected with the liquid return of the circulating pump, the air outlet of the cooling fan is opposite to the radiator fins, and the exhaust air passage in the radiator fins is connected with the exhaust passage; the cooling fan is mounted on the box body, and the air inlet of the cooling fan is arranged on the side wall of the box body; 3. The carbonic hydrogen sampling device of claim 2, wherein, the number of the exhaust pipes is two, the two exhaust pipes are vertically arranged above and below the radiator fins, and the exhaust air passages in the radiator fins are connected with the exhaust passages in the two exhaust pipes at the same time.

4. The carbonic hydrogen sampling device of claim 2, wherein, two vertical standing plates are mounted between the two exhaust pipes, and a fastening assembly is arranged between the standing plates and the exhaust pipes.

5. The carbonic hydrogen sampling device of claim 4, wherein, the fastening assembly comprises a connecting lug fixed on the exhaust pipe, and a fastening bolt is arranged to fix the exhaust pipe on the standing plate through the connecting lug.

6. The carbonic hydrogen sampling device of claim 5, wherein, the heat exchange pipe, the circulating pump, the radiator and the sampling bottles are one-to-one corresponding in number and position.

7. The carbonic hydrogen sampling device of claim 2, wherein, the sampling bottles comprise a first sampling bottle, a second sampling bottle, a third sampling bottle and a fourth sampling bottle sequentially connected by the sampling gas path, and a catalytic device is connected between the second sampling bottle and the third sampling bottle.

8. The carbonic hydrogen sampling device of claim 7, wherein, the exhaust pipe is a square pipe.

9. The carbonic hydrogen sampling device of claim 1, wherein, ​

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