Semi-volatile substance trapping device

Abstract

The utility model relates to the technical field of radioactive waste treatment, and provides a semi-volatile substance trapping device. The semi-volatile substance trapping device comprises: a heater having a first heating section and a second heating section; the heating pipe penetrates through the heater, the heating pipe is provided with a volatilization area and a trapping area, the volatilization area is arranged corresponding to the first heating section, and the trapping area is arranged corresponding to the second heating section; the first heating section is used for heating a solid-state semi-volatile substance in the volatilization area, so that the solid-state semi-volatile substance is converted into a gaseous-state semi-volatile substance; the trapping material support is located in the trapping area, the trapping material support is used for containing trapping materials, and the gaseous semi-volatile substances can flow to the trapping area from the volatilization area and are trapped by the trapping materials. According to the semi-volatile substance trapping device, the trapping effect of the semi-volatile substances is improved, and deep exploration and research of volatilization and trapping characteristics of various semi-volatile substances in nuclear waste are promoted.

Description

Technical Field

[0001] This utility model relates to the field of radioactive waste treatment technology, and in particular to a semi-volatile substance capture device. Background Technology

[0002] Nuclear power, as a "stable power source," has become an important component of a carbon-neutral power system. Limited uranium reserves, low nuclear fuel utilization rates, and a lack of effective means for the safe disposal of spent fuel are bottlenecks restricting the sustainable development of the nuclear energy scale required for carbon neutrality. Therefore, there is an urgent need to develop a new generation of advanced nuclear fission energy technologies to support the safe and sustainable development of nuclear energy.

[0003] The Accelerator Driven Advanced Nuclear Energy System (ADANES) is an advanced closed-cycle nuclear fuel system that integrates spent fuel transmutation, nuclear fuel breeding, and nuclear power generation. ADANES incorporates advanced high-energy accelerators, which not only enable the nuclear reactor to operate under subcritical conditions, improving the safety of nuclear energy utilization, but also significantly increase the utilization rate of uranium resources, while shortening the radioactive lifetime of nuclear waste from hundreds of thousands of years to approximately several hundred years.

[0004] ADANES primarily employs a relatively "simple" processing flow of "high-temperature dry processing + anhydrous physical processing" to remove some fission fragments from the spent fuel of pressurized water reactors before preparing it into renewable fuel. During this high-temperature dry reprocessing, some fission products (including neutron poisons), such as volatile and semi-volatile nuclides, are continuously released from the spent fuel as gaseous elements and compounds as the process continues. Because most of these nuclides are radioactive and have long half-lives, they must be properly handled to prevent leakage into the environment and radioactive contamination.

[0005] Among them, volatile nuclides mainly include H, Xe, and Kr, and the capture of these volatile substances has a relatively mature process. Semi-volatile nuclides mainly include I, Cs, Ru, Te, Mo, and Tc, and the capture of these semi-volatile substances is not yet effective. Therefore, there is an urgent need for a semi-volatile substance capture device suitable for high-temperature dry processes to explore the volatilization and capture characteristics of various semi-volatile substances, and to provide technical reserves for the high-temperature dry reprocessing of ADANES spent fuel. Utility Model Content

[0006] This invention provides a semi-volatile substance capture device to solve the problem in the prior art that semi-volatile substances generated in the high-temperature dry reprocessing of accelerator-driven advanced nuclear energy systems cannot be effectively captured.

[0007] This utility model provides a semi-volatile substance capture device, comprising:

[0008] The heater has a first heating section and a second heating section;

[0009] A heating tube extends through the heater. The heating tube is provided with a volatilization zone and a collection zone. The volatilization zone is arranged corresponding to the first heating section, and the collection zone is arranged corresponding to the second heating section. The first heating section is used to heat the solid semi-volatile substance located in the volatilization zone, so that the solid semi-volatile substance is converted into a gaseous semi-volatile substance.

[0010] A collection material support is located within the collection zone. The collection material support is used to contain the collection material, and the gaseous semi-volatile substance can flow from the volatile zone to the collection zone and be collected by the collection material.

[0011] According to the present invention, a semi-volatile substance capture device is provided, wherein the capture material support includes a support body and an end cap, the support body having a partition portion, the end cap and the partition portion both having a plurality of air holes, the end cap covering the end of the support body, and an accommodating space being formed between the end cap and the partition portion, the accommodating space being used to contain the capture material.

[0012] According to the present invention, a semi-volatile substance collection device is provided, wherein there are multiple supports, each support having a connected large-diameter section and a small-diameter section, and the multiple supports are connected in sequence by means of the large-diameter section being sleeved on the small-diameter section;

[0013] The end cap includes a large end cap and a small end cap, both of which are provided with multiple air holes. The large end cap is located at the end of the large-diameter section at one end of the material collection bracket, and the small end cap is located at the end of the small-diameter section at the other end of the material collection bracket.

[0014] According to the present invention, a semi-volatile substance collection device is provided, wherein the large end cap has a cover body and a connecting part coaxially connected, the large diameter section is sleeved on the outside of the connecting part, and the small end cap is sleeved on the outside of the small diameter section, wherein the outer diameter of the cover body, the outer diameter of the large diameter section and the outer diameter of the small end cap are the same.

[0015] According to the present invention, a semi-volatile substance collection device is provided, wherein a plurality of collection material supports are provided in the collection area of ​​the heating tube, and the plurality of collection material supports are arranged along the length direction of the heating tube.

[0016] According to the semi-volatile substance collection device provided by this utility model, it further includes:

[0017] The heating tube has a sealing structure installed at both ends, and the sealing structure is sealed to the heating tube. One of the sealing structures has an air inlet, and the other sealing structure has a first air outlet.

[0018] According to the semi-volatile substance collection device provided by this utility model, it further includes:

[0019] A cooler is provided between the heater and one end of the heating tube, and another cooler is provided between the heater and the other end of the heating tube. The cooler is used to cool the heating tube.

[0020] According to the present invention, a semi-volatile substance capture device is provided, wherein the cooler includes: a shell, the shell having a coolant inlet and a coolant outlet, a heating tube passing through the shell, the heating tube and the shell surrounding to form a cooling cavity, and the cooling cavity being connected to the coolant inlet and the coolant outlet.

[0021] According to the semi-volatile substance capture device provided by this utility model, the cooler further includes: a liquid resistance structure, which is sleeved on the heating tube and divides the cooling cavity into a first cooling cavity and a second cooling cavity; the liquid resistance structure is provided with a plurality of through holes, which connect the first cooling cavity and the second cooling cavity, the coolant inlet is connected to the first cooling cavity, and the coolant outlet is connected to the second cooling cavity.

[0022] According to the present invention, a semi-volatile substance collection device is provided, wherein the liquid resistance structure is provided with a first through hole and a second through hole, a plurality of first through holes are distributed around the heating tube, a plurality of second through holes are distributed around the heating tube and located between the heating tube and the plurality of first through holes, and the diameter of the second through hole is smaller than the diameter of the first through hole.

[0023] The semi-volatile substance capture device provided by this utility model uses a heating tube installed inside a heater. The first heating section of the heater heats the volatilization zone of the heating tube, and the second heating section heats the capture zone. A capture material support is installed within the capture zone. This process heats the solid semi-volatile substances in the volatilization zone into gaseous semi-volatile substances, which then flow into the capture zone and are captured by the capture material within the support. The device allows for independent temperature settings of the first and second heating sections based on the properties of the gaseous semi-volatile substances to be captured. This ensures that the solid semi-volatile substances fully volatilize into a gaseous state at optimal temperatures, and that the gaseous semi-volatile substances are captured by the capture material at the same optimal temperature. This improves the capture efficiency of semi-volatile substances and facilitates in-depth exploration and research into the volatilization and capture characteristics of various semi-volatile substances in nuclear waste. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the semi-volatile substance capture device provided by this utility model.

[0026] Figure 2 This is a schematic diagram of the heating tube structure in the semi-volatile substance capture device provided by this utility model.

[0027] Figure 3 This is a schematic diagram of the support structure in the semi-volatile substance capture device provided by this utility model.

[0028] Figure 4 yes Figure 3 Cross-sectional view of the central support section at point AA.

[0029] Figure 5 This is a schematic diagram of the large end cap structure in the semi-volatile substance capture device provided by this utility model.

[0030] Figure 6 This is a schematic diagram of the small end cap structure in the semi-volatile substance capture device provided by this utility model.

[0031] Figure 7 This is a schematic diagram of the liquid resistance structure in the semi-volatile substance capture device provided by this utility model.

[0032] Figure label:

[0033] 1. Heater; 11. First heating section; 12. Second heating section; 2. Heating tube; 3. Material collection bracket; 31. Support body; 311. Partition; 3111. First vent; 312. Large diameter section; 3121. First internal thread; 313. Small diameter section; 3131. Second external thread; 32. Large end cap; 321. Cap body; 322. Connecting part; 3221. First external thread; 323. Second vent; 33. Small end cap; 331. Third vent; 332. Second internal thread; 4. Solid semi-volatile substance; 5. Sealing structure; 61. Air inlet; 62. First air outlet; 63. Second air outlet; 7. Cooler; 71. Outer shell; 711. Coolant inlet; 712. Coolant outlet; 72. Liquid resistance structure; 721. First through hole; 722. Second through hole. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0035] In the description of the embodiments of this utility model, it should be noted that, unless otherwise expressly specified and limited, the terms "first" and "second" are numbered for the purpose of clearly identifying product components and do not represent any substantial difference. The terms "installed," "connected," and "linked" should be interpreted broadly; for example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this utility model according to the specific circumstances. Furthermore, "multiple" means two or more. In the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following related objects are in an "or" relationship.

[0036] The following is combined with Figures 1-7 This invention describes a semi-volatile substance capture device.

[0037] like Figure 1As shown, the semi-volatile substance capture device provided in this embodiment of the present invention includes a heater 1, a heating tube 2, and a capture material support 3. The heater 1 has a first heating section 11 and a second heating section 12. The heating tube 2 passes through the heater 1. The heating tube 2 is provided with a volatilization zone and a capture zone, the volatilization zone corresponding to the first heating section 11, and the capture zone corresponding to the second heating section 12. The first heating section 11 is used to heat the solid semi-volatile substance 4 located in the volatilization zone, causing the solid semi-volatile substance 4 to be converted into a gaseous semi-volatile substance. The capture material support 3 is located in the capture zone and is used to contain the capture material. The gaseous semi-volatile substance can flow from the volatilization zone to the capture zone and be captured by the capture material.

[0038] The heating tube 2 can be a square tube, a circular tube, or other polygonal hollow tubular structure. The material of the heating tube 2 can be corundum, quartz, stainless steel, etc., selected according to the operating temperature. The heater 1 can be a multi-stage heating furnace, containing at least two heating stages, including a first heating stage 11 and a second heating stage 12. The temperature of each heating stage can be set independently, and the temperature can be set to any temperature between 100℃ and 3000℃.

[0039] The heating tube 2 is connected to a gas-filling device at the end near the evaporation zone. Carrier gas and / or reactant gas are introduced into the heating tube 2 through the gas-filling device, which drives the gaseous semi-volatile substances from the evaporation zone to the collection zone. Alternatively, the heating tube 2 is connected to a gas-extraction device at the end near the collection zone. Gas is extracted from the heating tube 2 through the gas-extraction device, driving the gaseous semi-volatile substances from the evaporation zone to the collection zone.

[0040] When using this device to capture gaseous semi-volatile substances, solid semi-volatile substances 4 are placed into the volatilization zone of the heating tube 2. The temperatures of the first heating section 11 and the second heating section 12 of the heater 1 are set according to the properties of the gaseous semi-volatile substances to be captured. The solid semi-volatile substances 4 are heated through the first heating section 11, causing them to transform into gaseous semi-volatile substances. The gaseous semi-volatile substances flow from the volatilization zone to the capture zone, where the capturing material in the capturing material support 3 captures the semi-volatile substances.

[0041] The temperature required for the volatile zone and the temperature required for the collection zone can be the same or different, depending on the volatile and collection characteristics of the semi-volatile substances.

[0042] The semi-volatile substance capture device provided in this embodiment of the invention uses a heating tube 2 installed inside a heater 1. The first heating section 11 of the heater 1 heats the volatilization zone of the heating tube 2, and the second heating section 12 heats the capture zone. A capture material support 3 is installed within the capture zone. This process heats the solid semi-volatile substances in the volatilization zone into gaseous semi-volatile substances. The gaseous semi-volatile substances flow into the capture zone and are captured by the capture material within the capture material support 3. The semi-volatile substance capture device of this invention allows for individual temperature settings of the first heating section 11 and the second heating section 12 based on the properties of the gaseous semi-volatile substances to be captured. This ensures that the solid semi-volatile substances fully volatilize into a gaseous state at an optimal temperature, and that the gaseous semi-volatile substances are captured by the capture material at the same optimal temperature. This improves the capture effect of semi-volatile substances and facilitates in-depth exploration and research into the volatilization and capture characteristics of various semi-volatile substances in nuclear waste.

[0043] like Figure 4 , Figure 5 and Figure 6 As shown, in the semi-volatile substance capture device provided in this embodiment of the present invention, the capture material support 3 includes a support body 31 and an end cap. A partition portion 311 is formed inside the support body 31. The end cap and the partition portion 311 are provided with air holes. The end cap is disposed on the end of the support body 31, and an accommodating space is formed between the end cap and the partition portion 311 for accommodating the capture material.

[0044] Specifically, the support body 31 has a support portion and a partition portion 311. The support portion is a cylindrical structure and is coaxially arranged with the heating tube 2. The support portion can be a circular, square, or other polygonal cylindrical structure, which is specifically adjusted according to the shape of the heating tube 2 so that the outer peripheral wall of the support portion matches the shape of the inner peripheral wall of the heating tube 2.

[0045] Optionally, the support part is a cylindrical structure, and the end cap is threadedly connected to the support body 31. Optionally, the material collection bracket 3 and the heating tube 2 are made of the same material, such as stainless steel.

[0046] The end cap, support, and partition 311 form the accommodating space. The vents on the end cap and partition 311 are used to connect the accommodating space with the internal space of the heating tube 2, so that the gaseous semi-volatile substances can enter the trapping material support 3 and react with the trapping material, and the generated reaction gas can flow to the port of the heating tube 2.

[0047] The partition 311 can be located at one end of the support, forming a support body 31 with an opening at one end. When the end cap is placed over the opening, an accommodating space is formed between the end cap and the support body 31. Alternatively, as... Figure 4As shown, the partition 311 is located inside the support and forms a support body 31 with openings at both ends. Two end caps are respectively placed over the two openings, and two accommodating spaces are formed between the two end caps and the support body 31.

[0048] In some embodiments, the collection zone of the heating tube 2 is provided with multiple collection material supports 3, which are arranged along the length of the heating tube 2. In this way, gaseous semi-volatile substances can be collected in multiple stages to achieve sufficient collection.

[0049] The heating tube 2 can be provided with multiple collection zones, which can correspond to different heating sections of the heater 1. By heating the multiple collection zones at different temperatures through multiple heating sections, different gaseous semi-volatile substances can be collected in different collection zones.

[0050] like Figure 4 As shown, in some embodiments, the material collection bracket 3 includes multiple support bodies 31. Each support body 31 includes a connected large-diameter section 312 and a small-diameter section 313, with the multiple support bodies 31 connected sequentially by the large-diameter section 312 being fitted onto the small-diameter section 313. The end caps include a large end cap 32 and a small end cap 33, both of which have multiple air holes. The large end cap 32 covers the end of the large-diameter section 312 at one end of the material collection bracket 3, and the small end cap covers the end of the small-diameter section 313 at the other end of the material collection bracket 3.

[0051] Specifically, the support portion of the cylindrical structure is constructed with a large-diameter section 312 and a small-diameter section 313 along its axial direction. Multiple support bodies 31 are sequentially nested together along the axial direction, meaning that the large-diameter section 312 of one of every two adjacent support bodies 31 is nested onto the small-diameter section of the other support body 31. Optionally, a partition 311 is disposed between the large-diameter section 312 and the small-diameter section 313.

[0052] The large end cap 32 covers the outermost large-diameter section 312, forming a accommodating space. The small end cap 33 is located on the outermost small-diameter section 313, forming a accommodating space. Multiple accommodating spaces are formed between the partitions 311 of the multiple supports 31. Gaseous semi-volatile substances flow in from one end of the trapping material support 3, react sequentially with the trapping materials in the multiple accommodating spaces, and then flow out from the other end.

[0053] For example, two supports 31 joined together form a material collection support 3 with three accommodating spaces, achieving a three-stage collection function. More supports 31 joined together can achieve more stages of collection. In practical applications, the number of supports 31 can be increased or decreased depending on the type and characteristics of the gaseous semi-volatile substances to be collected, and the desired collection effect.

[0054] Optionally, both the large-diameter section 312 and the small-diameter section 313 are cylindrical structures, and correspondingly, the large end cap 32 and the small end cap 33 are circular caps. The large end cap 32 is threaded to the large-diameter section 312, and the small end cap 33 is threaded to the small-diameter section 313.

[0055] like Figure 3 As shown, the partition 311 has a plurality of first air holes 3111 arranged in a circular array, forming a mesh-like porous structure. The large end cap 32 has a plurality of second air holes 323 arranged in a circular array, forming a mesh-like porous structure. The small end cap 33 has a plurality of third air holes 331 arranged in a circular array, forming a mesh-like porous structure. Optionally, the diameter of the first air holes 3111, the second air holes 323, and the third air holes 331 is not less than 5 mm, so that the trapping material support 3 itself does not form air resistance.

[0056] like Figure 5 As shown, in some embodiments of this utility model, the large end cap 32 has a cap body 321 and a connecting portion 322 coaxially connected. The large-diameter section 312 is sleeved on the outside of the connecting portion 322, and the small end cap 33 is sleeved on the outside of the small-diameter section 313. The outer diameters of the cap body 321, the large-diameter section 312, and the small end cap 33 are the same. It can be understood that the outer diameter of the cap body 321 is larger than the outer diameter of the connecting portion 322, and the connecting portion 322 protrudes from the side of the cap body 321 facing the support body 31.

[0057] Optionally, see Figure 5 The outer surface of the connecting part 322 is provided with a first external thread 3221, and the inner surface of the large-diameter section 312 is provided with a first internal thread 3121. The connecting part 322 is threadedly connected to the large-diameter section 312. See also Figure 6 The inner side of the small end cap 33 is provided with a second internal thread 332, and the outer side of the small diameter section 313 is provided with a second external thread 3131. The small diameter section 313 is threadedly connected to the small end cap 33. The threaded connection method can realize quick assembly and disassembly between multiple support bodies 31.

[0058] The outer diameters of the cover 321, the large diameter section 312, and the small end cap 33 are the same, which allows the outer circumferential surfaces of the cover 321, the large diameter section 312, and the small end cap 33 to be located on the same cylindrical surface. This allows the entire material collection support 3 to have good coaxiality with the heating tube 2, so that the outer circumferential surface of the material collection support 3 and the inner circumferential surface of the heating tube 2 fit closely together, thereby reducing or eliminating the gap between the material collection support 3 and the inner wall of the heating tube 2, thus reducing or preventing the escape of gaseous semi-volatile substances from the gap between the material collection support 3 and the heating tube 2.

[0059] like Figure 1As shown, the semi-volatile substance capture device provided in this embodiment of the present invention also includes a sealing structure 5. Sealing structures 5 are respectively installed at both ends of the heating tube 2, and the sealing structures 5 are sealed to the heating tube 2. One sealing structure 5 is provided with an air inlet 61, and the other sealing structure 5 is provided with a first air outlet 62.

[0060] Specifically, the sealing structure 5 includes a first flange, a second flange, a mounting part, and a sealing ring. The mounting part is a cylindrical structure. The first flange is coaxially and fixedly connected to the mounting part. The mounting part is coaxially sleeved with the end of the heating tube 2. A sealing ring is provided between the mounting part and the heating tube 2 to prevent gaseous semi-volatile substances from leaking between the mounting part and the heating tube 2. A gas pipe is provided on the side of the second flange away from the first flange, and this gas pipe is connected to the heating tube 2.

[0061] One of the sealing structures 5 has a gas pipe serving as an air inlet 61, and the other sealing structure 5 has a gas pipe serving as a first air outlet 62. Carrier gas and / or reactive gas can be introduced into the heating tube 2 through the air inlet 61, causing the gaseous semi-volatile substances to flow within the heating tube 2 and migrate from the evaporation zone to the collection zone.

[0062] A sealing ring is installed between the first and second flanges. The first and second flanges are connected by multiple bolts, which deform the sealing ring to achieve a sealed connection between the two flanges. When it is necessary to add solid semi-volatile substances into the heating pipe 2, the second flange is opened, the material is added, and then the second flange is installed back onto the first flange, achieving quick assembly and disassembly.

[0063] It should be noted that the sealing structure 5 in this embodiment is not limited to the flange structure described above, and can also be other structural forms, such as a sealing door structure. This embodiment of the utility model does not impose specific limitations on this.

[0064] like Figure 2 As shown in this embodiment of the invention, the heating tube 2 has a second vent 63 on its side wall, which is used to connect to an external extraction device. Before introducing solid semi-volatile substances into the heating tube 2, the extraction device can be used to extract any residual gaseous semi-volatile substances from the heating tube 2 to prevent them from leaking into the environment. The second vent 63 can be located on the side of the collection zone away from the evaporation zone, and the gaseous semi-volatile substances in the heating tube 2 can be driven to flow by the extraction device.

[0065] like Figure 1 As shown, the semi-volatile substance capture device provided in this embodiment of the present invention also includes a cooler 7. A cooler is provided between one end of the heater 1 and the heating tube 2, and another cooler 7 is provided between the other end of the heater 1 and the heating tube 2. The cooler 7 is used to cool the heating tube 2.

[0066] The portion of the heating tube 2 located inside the heater 1 is the effective heating section of the heating tube 2. Both one end of the heating tube 2 and the heater 1, as well as the other end of the heating tube 2 and the heater 1, are cooled by the cooler 7. This prevents heat transfer from the heating tube 2 to both ends, thus preventing gas leakage due to high-temperature failure of the sealing ring of the sealing structure 5, and ensuring a good sealing effect of the sealing structure 5 on the heating tube 2.

[0067] Optionally, heater 1 is a three-stage heating furnace, with the temperature of each stage adjustable from room temperature to 1500℃. Heating tube 2 is made of high-temperature resistant stainless steel, capable of withstanding temperatures up to 1200℃. Heating tube 2 has a cylindrical hollow tubular structure with an outer diameter of 60 mm, an inner diameter of 50 mm, and a total length of 1300 mm. Its effective length, approximately 750 mm, is located within heater 1.

[0068] The cooler 7 includes a housing 71, which has a coolant inlet 711 and a coolant outlet 712. A heating pipe 2 passes through the housing 71, and the heating pipe 2 and the housing 71 form a cooling cavity, which is connected to the coolant inlet 711 and the coolant outlet 712.

[0069] Specifically, the cooler 7 includes an annular shell and end caps. End caps are connected to both ends of the annular shell. Heating tubes 2 pass through the annular shell and the two end caps. The annular shell, heating tubes 2, and the two end caps form a cooling cavity. A coolant inlet 711 and a coolant outlet 712 are located on the annular shell and are situated on opposite sides of the heating tubes 2. The coolant absorbs heat from the heating tubes 2 as it flows from the coolant inlet 711 to the coolant outlet 712. Optionally, the coolant can be tap water, deionized water, or ethanol, etc., depending on the cooling requirements.

[0070] Optionally, the housing of the cooler 7 is made of the same material as the heating tube 2 and is connected to the heating tube 2 by welding.

[0071] Furthermore, the cooler 7 also includes a liquid resistance structure 72. The liquid resistance structure 72 is fitted onto the heating tube 2 and divides the cooling chamber into a first cooling chamber and a second cooling chamber. The liquid resistance structure 72 has multiple through holes that connect the first cooling chamber and the second cooling chamber. The coolant inlet 711 is connected to the first cooling chamber, and the coolant outlet 712 is connected to the second cooling chamber.

[0072] Understandably, the coolant enters the first cooling chamber through the coolant inlet 711, then flows through multiple through-holes in the liquid resistance structure 72 into the second cooling chamber, and finally exits from the coolant outlet 712. The liquid resistance structure 72 forces the coolant in the first cooling chamber to flow axially along the heating pipe 2 towards the second cooling chamber, increasing the contact time and contact area between the coolant and the heating pipe 2, thereby improving the cooling efficiency of the heating pipe 2.

[0073] like Figure 7 As shown, the liquid resistance structure 72 has a first through hole 721 and a second through hole 722. Multiple first through holes 721 are distributed around the heating tube 2, and multiple second through holes 722 are distributed around the heating tube 2 and located between the heating tube 2 and the multiple first through holes 721. The diameter of the second through hole 722 is smaller than the diameter of the first through hole 721.

[0074] Specifically, multiple first through holes 721 are arranged in a circular array around the heating tube 2, and multiple second through holes 722 are also arranged in a circular array around the heating tube 2. The first through holes 721 are located around the periphery of the second through holes 722. The diameter of the second through holes 722 is smaller than that of the first through holes 721, which allows the flow velocity of the coolant near the heating tube 2 to be greater than that away from the heating tube 2, thereby improving the heat transfer coefficient between the coolant and the heating tube 2. Furthermore, the flow resistance of the coolant near the heating tube 2 is greater than that away from the heating tube 2, increasing the turbulence of the coolant near the heating tube 2 and improving the heat transfer efficiency.

[0075] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A semi-volatile substance collection device, characterized in that, include: The heater has a first heating section and a second heating section; A heating tube extends through the heater. The heating tube is provided with a volatilization zone and a collection zone. The volatilization zone is arranged corresponding to the first heating section, and the collection zone is arranged corresponding to the second heating section. The first heating section is used to heat the solid semi-volatile substance located in the volatilization zone, so that the solid semi-volatile substance is converted into a gaseous semi-volatile substance. A collection material support is located within the collection zone. The collection material support is used to contain the collection material, and the gaseous semi-volatile substance can flow from the volatile zone to the collection zone and be collected by the collection material.

2. The semi-volatile substance collection device according to claim 1, characterized in that, The material collection support includes a support body and an end cap. The support body has a partition portion. Both the end cap and the partition portion are provided with multiple air holes. The end cap is placed on the end of the support body. An accommodating space is formed between the end cap and the partition portion. The accommodating space is used to contain the material collection.

3. The semi-volatile substance collection device according to claim 2, characterized in that, The number of the supports is multiple, and each support has a connected large-diameter section and a small-diameter section. The multiple supports are connected in sequence by the large-diameter section being fitted onto the small-diameter section. The end cap includes a large end cap and a small end cap, both of which are provided with multiple air holes. The large end cap is located at the end of the large-diameter section at one end of the material collection bracket, and the small end cap is located at the end of the small-diameter section at the other end of the material collection bracket.

4. The semi-volatile substance collection device according to claim 3, characterized in that, The large end cap has a cover body and a connecting part coaxially connected. The large diameter section is sleeved on the outside of the connecting part, and the small end cap is sleeved on the outside of the small diameter section. The outer diameter of the cover body, the outer diameter of the large diameter section, and the outer diameter of the small end cap are the same.

5. The semi-volatile substance collection device according to claim 1, characterized in that, The collecting area of ​​the heating tube is provided with a plurality of collecting material supports, which are arranged along the length of the heating tube.

6. The semi-volatile substance collection device according to claim 1, characterized in that, Also includes: The heating tube has a sealing structure installed at both ends, and the sealing structure is sealed to the heating tube. One of the sealing structures has an air inlet, and the other sealing structure has a first air outlet.

7. The semi-volatile substance collection device according to claim 6, characterized in that, Also includes: A cooler is provided between the heater and one end of the heating tube, and another cooler is provided between the heater and the other end of the heating tube. The cooler is used to cool the heating tube.

8. The semi-volatile substance collection device according to claim 7, characterized in that, The cooler includes: a housing, the housing having a coolant inlet and a coolant outlet, a heating tube passing through the housing, the heating tube and the housing forming a cooling cavity, the cooling cavity being connected to the coolant inlet and the coolant outlet.

9. The semi-volatile substance collection device according to claim 8, characterized in that, The cooler further includes: a liquid resistance structure, which is sleeved on the heating tube and divides the cooling cavity into a first cooling cavity and a second cooling cavity; the liquid resistance structure is provided with a plurality of through holes, which connect the first cooling cavity and the second cooling cavity, the coolant inlet is connected to the first cooling cavity, and the coolant outlet is connected to the second cooling cavity.

10. The semi-volatile substance collection device according to claim 9, characterized in that, The liquid resistance structure is provided with a first through hole and a second through hole. A plurality of first through holes are distributed around the heating tube, and a plurality of second through holes are distributed around the heating tube and located between the heating tube and the plurality of first through holes. The diameter of the second through hole is smaller than the diameter of the first through hole.

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