Collecting cold trap

Abstract

The utility model relates to the technical field of material collection and condensation, and discloses a collection cold trap. The collecting cold trap comprises a shell, a first cooling medium layer, a material collecting layer, a second cooling medium layer and a heat preservation shielding layer are defined in the shell, the material collecting layer is used for collecting materials, and the first cooling medium layer and the second cooling medium layer are used for introducing cooling media; the heat preservation shielding layer, the second cooling medium layer, the material collecting layer and the first cooling medium layer are sequentially arranged in a sleeved mode from outside to inside. In this way, the collecting cold trap can be rapidly heated and cooled within a large temperature range, and the temperature of the material collecting layer can be accurately regulated and controlled by adjusting the temperature of the two cooling medium layers.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of material collection and condensation, for example to a collection cold trap. BACKGROUND

[0002] At present, the collection cold trap is a device for capturing and condensing target substances in gas or vapor, which is widely used in chemical, pharmaceutical, electronic, food and other industries.

[0003] In the related art, a collection cold trap is disclosed, in which a strong corrosive gas material is introduced into the collection cold trap, the collection cold trap is cooled, the material in the cold trap is condensed from gas to solid, the material is temporarily stored in the collection cold trap, and the remaining impurity gas above the condensation point is discharged from the collection cold trap through the gas outlet. When the subsequent process is needed, the collection cold trap is heated by precise temperature control to convert the solid material into gas and transfer it out of the collection cold trap.

[0004] In the process of implementing the embodiments of the present disclosure, it is found that at least the following problems exist in the related art:

[0005] In the related art, the temperature range and speed of cooling and heating of the collection cold trap are limited, and the collection cold trap cannot be quickly cooled and heated in a large temperature range.

[0006] It should be noted that the information disclosed in the above background section is only used to strengthen the understanding of the background of the present application, and therefore can include information that does not constitute prior art known to those skilled in the art. CONTENT OF THE INVENTION

[0007] In order to have a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. The summary is not a general review, nor is it intended to determine key / important components or delineate the scope of protection of these embodiments, but as a prelude to the detailed description below.

[0008] The embodiments of the present disclosure provide a collection cold trap to enable the collection cold trap to quickly cool and heat in a large temperature range.

[0009] The embodiments of the present disclosure provide a collection cold trap, which includes a shell, which defines a first cooling medium layer, a material collection layer, a second cooling medium layer and a heat preservation shielding layer inside. The material collection layer is used to collect material, and the first cooling medium layer and the second cooling medium layer are used to introduce cooling medium. The heat preservation shielding layer, the second cooling medium layer, the material collection layer and the first cooling medium layer are sequentially sleeved from the outside to the inside.

[0010] Optionally, the vertical section of the heat insulation and shielding layer, the second cooling medium layer and the material collecting layer are all in U shape; and / or, the length of the heat insulation and shielding layer along the radial direction of the shell is greater than the length of the second cooling medium layer, the material collecting layer and the first cooling medium layer along the radial direction of the shell.

[0011] Optionally, the first cooling medium layer is provided with a first refrigerant inlet and a first refrigerant outlet, the first refrigerant inlet is used for communicating with the refrigerant outlet of the external component, the first refrigerant outlet is used for communicating with the refrigerant inlet of the external component, the first refrigerant inlet communicates with the first cooling medium layer through a first refrigerant pipe, and the first refrigerant outlet communicates with the first cooling medium layer through a second refrigerant pipe; wherein the first refrigerant inlet and the first refrigerant outlet are respectively located on the opposite sides of the center of the first refrigerant medium layer cross section, and / or the height of the outlet of the first refrigerant pipe is less than the height of the inlet of the second refrigerant pipe.

[0012] Optionally, the second cooling medium layer is provided with a second refrigerant inlet and a second refrigerant outlet, the second refrigerant inlet is used for communicating with the refrigerant outlet of the external component, the second refrigerant outlet is used for communicating with the refrigerant inlet of the external component, the second refrigerant inlet communicates with the second cooling medium layer through a third refrigerant pipe, and the second refrigerant outlet communicates with the second cooling medium layer through a fourth refrigerant pipe; wherein the first refrigerant inlet and the second refrigerant outlet are respectively located on the opposite sides of the center of the first refrigerant medium layer cross section, and / or the height of the outlet of the third refrigerant pipe is less than the height of the inlet of the fourth refrigerant pipe.

[0013] Optionally, the material collecting layer is provided with a material inlet and a material outlet, the material inlet is used for feeding the material collecting layer, and the material outlet is used for discharging the material collecting layer, the material outlet and the material collecting layer communicate through a discharge pipe, and the material inlet and the material collecting layer communicate through a feeding pipe; wherein the material inlet is located on one side of the center of the first refrigerant medium layer cross section, and / or the height of the inlet of the discharge port is less than the height of the outlet of the feeding port.

[0014] Optionally, the bottom of the material collecting layer is spaced below the bottom of the first refrigerant medium layer, the discharge pipe is located in the first refrigerant medium layer and penetrates through both ends of the first refrigerant medium layer in the height direction, and the inlet of the discharge pipe is located at the bottom of the first refrigerant medium layer and communicates with the material collecting layer.

[0015] Optionally, the shell comprises: a shell body, which defines the first cooling medium layer, the material collecting layer, the second cooling medium layer and the heat insulation and shielding layer; a first cover body, which is annular and covers the top of the heat insulation and shielding layer; a second cover body, which is annular and covers the top of the second cooling medium layer; and a third cover body, which is circular and covers the top of the material collecting layer and the first cooling medium layer.

[0016] Optionally, the height of the first cover is greater than the height of the second cover and the third cover; and / or, further comprising: a sealing ring in the shape of a ring, arranged between the first cover and the shell body, between the second cover and the shell body, between the third cover and the shell body, between the first cover and the second cover, and between the second cover and the third cover; wherein the cross section of the sealing ring is in the shape of C, and / or the sealing ring is an Inconel alloy spring N4 nickel metal sealing ring.

[0017] Optionally, the collection cold trap further comprises: a temperature measuring sleeve located in the material collection layer for detecting the temperature of the material collection layer; and / or, the shell is further provided with a back blowing port, the back blowing port being in communication with the material collection layer and the outside world, for blowing gas to the material collection layer to purge the material in the material collection layer; and / or, further comprising: a radiation shielding device arranged in the heat insulation shielding layer for shielding radiation.

[0018] Optionally, when the collection cold trap comprises the radiation shielding device, the radiation shielding device comprises a boron-containing polyethylene plate.

[0019] The collection cold trap provided by the embodiments of the present disclosure can achieve the following technical effects:

[0020] The collection cold trap provided by the embodiments of the present disclosure can achieve the following technical effects:

[0021] The general description above and the following description below are exemplary and explanatory only and are not intended to be limiting of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0022] One or more embodiments are illustrated by way of example in the figures that are not intended to be limiting of the present application. Identical reference numbers in different figures identify identical, functionally similar, and / or structurally similar elements. Dimensions of elements in the figures can be chosen for effect and can not be to scale. Where certain elements are shown (singularly), it is intended to show that at least one, but there can be more than one of these elements.

[0023] Figure 1 is a structural schematic diagram of one perspective of a collection cold trap provided by the embodiments of the present disclosure;

[0024] Figure 2 is a local structure schematic diagram of a collection cold trap provided by an embodiment of the present disclosure;

[0025] Figure 3 is another perspective structure schematic diagram of a collection cold trap provided by an embodiment of the present disclosure;

[0026] Figure 4 is Figure 3 is a cross-sectional structure schematic diagram along the B-B direction.

[0027] Reference signs:

[0028] 10, shell; 101, first cooling medium layer; 102, material collection layer; 103, second cooling medium layer; 104, heat preservation shielding layer; 105, first cover; 106, second cover; 107, third cover; 201, first refrigerant inlet; 202, first refrigerant outlet; 203, first refrigerant pipe; 204, second refrigerant pipe; 301, second refrigerant inlet; 302, second refrigerant outlet; 303, third refrigerant pipe; 304, fourth refrigerant pipe; 401, material inlet; 402, material outlet; 403, discharge pipe; 404, feeding pipe; 50, temperature measuring sleeve; 501, back flushing port; 502, radiation shielding device; 503, vacuumizing hole. DETAILED DESCRIPTION

[0029] In order to enable a more detailed understanding of the features and technical content of the embodiments of the present disclosure, the implementation of the embodiments of the present disclosure will be described in detail below in conjunction with the drawings, which are only used for reference and do not limit the embodiments of the present disclosure. In the following technical description, in order to facilitate explanation, a plurality of details are provided to provide a full understanding of the disclosed embodiments. However, one or more embodiments can still be implemented without these details. In other cases, in order to simplify the drawings, well-known structures and devices can be simplified.

[0030] The terms "first", "second", and the like in the specification and claims of the embodiments of the present disclosure and the above drawings are used to distinguish similar objects, and do not necessarily have to describe a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances in order to describe the embodiments of the present disclosure herein. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion.

[0031] In the embodiments of the present disclosure, the terms "upper", "lower", "inner", "middle", "outer", "front", "back" and the like indicate the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe the embodiments of the present disclosure and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation. In addition, in addition to indicating the orientation or positional relationship, the above-mentioned part of the terms can also be used to indicate other meanings, for example, the term "upper" can also be used to indicate a certain dependent relationship or connection relationship in some cases. For those skilled in the art, the specific meaning of these terms in the embodiments of the present disclosure can be understood according to the specific circumstances.

[0032] In addition, the terms "set", "connected", "fixed" should be broadly understood. For example, "connected" can be fixedly connected, detachably connected, or integrally configured; can be mechanically connected, or electrically connected; can be directly connected, or indirectly connected through an intermediate medium, or internal communication between two devices, elements or components. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present disclosure can be understood according to the specific circumstances.

[0033] Unless otherwise specified, the term "a plurality of" means two or more.

[0034] The term "and / or" is a description of the association relationship of the object, which means that there can be three relationships. For example, A and / or B means: A or B, or, A and B, three relationships.

[0035] It should be noted that the embodiments in the embodiments of the present disclosure and the features in the embodiments can be combined with each other without conflict.

[0036] The radial direction and the height direction of the present application are shown in Figure 4 .

[0037] As shown in Figures 1 to 4 , the present disclosure provides a collection cold trap, which includes a shell 10, the inside of the shell 10 defines a first cooling medium layer 101, a material collection layer 102, a second cooling medium layer 103 and a heat preservation shielding layer 104, the material collection layer 102 is used for collecting materials, and the first cooling medium layer 101 and the second cooling medium layer 103 are used for introducing cooling medium; wherein the heat preservation shielding layer 104, the second cooling medium layer 103, the material collection layer 102 and the first cooling medium layer 101 are sequentially sleeved from the outside to the inside.

[0038] In the embodiments of the present disclosure, the first cooling medium layer 101 and the second cooling medium layer 103 are both used to introduce cooling medium, which can absorb heat when evaporated to reduce the temperature of the material collection layer 102, so that the gaseous material in the material collection layer 102 can be condensed into solid state to enable the material to be temporarily stored in the material collection layer 102. The cooling medium releases heat when condensed to increase the temperature of the material collection layer 102, so that the solid material in the material collection layer 102 can be changed into gaseous state and then transferred out of the material collection layer 102, thereby realizing the functions of collection, evaporation and condensation of the collection cold trap. At the same time, the target material entering the material collection layer 102 can be cold-trapped into solid state under the action of temperature reduction, and the remaining impurity gas above the condensation point is discharged out of the material collection layer, thereby ensuring the purity of the material collected in the material collection layer. Therefore, the temperature of the material collection layer 102 can be adjusted by the two cooling medium layers (the first cooling medium layer and the second cooling medium layer), so as to cool and heat the material in the material collection layer 102, so that the material can be evaporated or condensed. In the embodiments of the present disclosure, the first cooling medium layer 101 and the second cooling medium layer 103 are arranged inside and outside the material collection layer 102, so that the inside and outside of the material collection layer 102 are in contact with the cooling medium layer, thereby increasing the heating and cooling speed of the material collection layer 102, and also increasing the temperature variation range of the material collection layer 102, realizing efficient material condensation and collection, and improving production efficiency and material purity.

[0039] In addition, the heat preservation shielding layer 104 is used for heat preservation. The heat preservation shielding layer 104 can preserve heat for the second cooling medium layer 103, the material collection layer 102 and the first cooling medium layer 101 inside it, reduce heat exchange between the second cooling medium layer 103, the material collection layer 102 and the first cooling medium layer 101 and the outside, and thereby improve the temperature stability of the material collection layer 102 to ensure the stability of the phase of the material.

[0040] Optionally, the heat preservation shielding layer 104 is filled with vacuum, so that the heat preservation shielding layer 104 can realize vacuum heat insulation by using the vacuum layer to improve the heat preservation effect of the heat preservation shielding layer 104.

[0041] Optionally, as shown in Figure 3 the heat preservation shielding layer 104 is also provided with a vacuum extraction hole 503 for extracting vacuum from the heat preservation shielding layer 104.

[0042] Optionally, the vertical cross sections of the heat preservation shielding layer 104, the second cooling medium layer 103 and the material collection layer 102 are all U-shaped.

[0043] In the embodiments of the present disclosure, the vertical section of the U-shaped structure is arranged such that the heat insulation shielding layer 104, the second cooling medium layer 103, the material collecting layer 102 and the first cooling medium layer 101 can not only be wrapped in the radial direction, but also be sequentially arranged from the outside to the inside at the bottom, thereby increasing the cooling area, improving the heat exchange efficiency, and further improving the temperature change uniformity of the material collecting layer 102, so as to improve the stability and uniformity of the material phase change.

[0044] Optionally, the vertical section of the first cooling medium layer 101 is rectangular. In this way, the first cooling medium layer 101 is located at the innermost side, and therefore, the cross section of the first cooling medium layer 101 is rectangular, so as to make full use of the space of the shell 10 and improve the filling amount of the cooling medium in the first cooling medium layer 101.

[0045] Optionally, the length of the heat insulation shielding layer 104 along the radial direction of the shell 10 is greater than the length of the second cooling medium layer 103, the material collecting layer 102 and the first cooling medium layer 101 along the radial direction of the shell 10.

[0046] In the embodiments of the present disclosure, the length of the heat insulation shielding layer 104 along the radial direction of the shell 10 is the largest, so as to increase the thickness of the heat insulation shielding layer 104 along the radial direction of the shell 10, thereby enhancing the heat insulation effect, reducing heat loss and improving energy utilization efficiency.

[0047] Optionally, the length of the second cooling medium layer 103, the material collecting layer 102 and the first cooling medium layer 101 along the radial direction of the shell 10 is the same or similar.

[0048] Optionally, the cross section of the shell is circular. That is, the cross section of the shell is circular or approximately circular.

[0049] Optionally, the cross sections of the first cooling medium layer, the material collecting layer, the second cooling medium layer and the heat insulation shielding layer are circular, and the cross sections of the heat insulation shielding layer, the second cooling medium layer, the material collecting layer and the first cooling medium layer are sequentially arranged in the direction from the outside to the inside.

[0050] Optionally, the centers of the heat insulation shielding layer, the second cooling medium layer, the material collecting layer and the first cooling medium layer coincide, so that the temperature distribution, material distribution and heat insulation effect of the heat insulation shielding layer, the second cooling medium layer, the material collecting layer and the first cooling medium layer in the circumferential direction are relatively uniform.

[0051] Optionally, the first cooling medium layer 101 is provided with a first refrigerant inlet 201 and a first refrigerant outlet 202, the first refrigerant inlet 201 is used for communicating with the refrigerant outlet of an external component, and the first refrigerant outlet 202 is used for communicating with the refrigerant inlet of the external component; wherein the first refrigerant inlet 201 and the first refrigerant outlet 202 are respectively located on the opposite sides of the center of the cross section of the first cooling medium layer.

[0052] In the embodiments of the present disclosure, the first refrigerant inlet 201 and the first refrigerant outlet 202 are respectively located on opposite sides of the center of the cross section of the first refrigerant medium layer, so that the cooling medium of the first refrigerant inlet 201 can not only move in the height direction of the first cooling medium layer 101, but also move in the radial direction, and then flow out from the first refrigerant outlet 202, further improving the flow path of the cooling medium, so that the cooling medium can be efficiently circulated, improving the condensation and evaporation effect, and reducing the consumption of the cooling medium.

[0053] Optionally, as shown in Figure 2 and Figure 4 , the first refrigerant inlet 201 communicates with the first cooling medium layer 101 through a first refrigerant pipe 203, and the first refrigerant outlet 202 communicates with the first cooling medium layer 101 through a second refrigerant pipe 204, wherein the height of the outlet of the first refrigerant pipe 203 is less than the height of the inlet of the second refrigerant pipe 204, so that the refrigerant flowing out of the first refrigerant inlet 201 flows to the first cooling medium layer 101 through the first refrigerant pipe 203, and then the cooling medium accumulates in the first cooling medium layer 101 and rises to a certain height, and then flows to the first refrigerant outlet 202 from the inlet of the second refrigerant pipe 204 and flows back to the external member, so that the cooling medium flowing out of the first refrigerant inlet 201 cannot accumulate in the first cooling medium layer 101 and flow out from the first refrigerant outlet 202, and the accumulation amount of the cooling medium in the first cooling medium layer 101 is ensured.

[0054] Optionally, the outlet of the first refrigerant pipe 203 is located at the lower part of the first cooling medium layer 101, and the inlet of the second refrigerant pipe 204 is located at the top of the first cooling medium layer 101, so that the cooling medium can be accumulated below the first refrigerant pipe 203.

[0055] Optionally, the second cooling medium layer 103 is provided with a second refrigerant inlet 301 and a second refrigerant outlet 302, the second refrigerant inlet 301 is used to communicate with the refrigerant outlet of the external member, and the second refrigerant outlet 302 is used to communicate with the refrigerant inlet of the external member; wherein the first refrigerant inlet 201 and the second refrigerant outlet 302 are respectively located on opposite sides of the center of the cross section of the first refrigerant medium layer.

[0056] In the embodiments of the present disclosure, the second refrigerant inlet 301 and the second refrigerant outlet 302 are both in communication with the component, so that the cooling medium in the all-in-one cold and heat machine after being heated or cooled flows into the second cooling medium layer 103 through the second refrigerant inlet 301 and then flows back into the component from the second refrigerant outlet 302, so that the second refrigerant inlet 301 and the second refrigerant outlet 302 are arranged in series, the flow path of the cooling medium in the second cooling medium layer 103 is improved, and the heat exchange efficiency is improved. Similarly, the second refrigerant inlet 301 and the second refrigerant outlet 302 are respectively located on opposite sides of the center of the first refrigerant medium layer cross section, so that the cooling medium of the second refrigerant inlet 301 can not only move in the height direction of the second cooling medium layer 103, but also move in the radial direction, and then flow out from the second refrigerant outlet 302, further improving the flow path of the cooling medium, so that the cooling medium can be efficiently circulated, improving the condensation and evaporation effect, and reducing the consumption of the cooling medium.

[0057] Optionally, the second refrigerant inlet 301 is in communication with the second cooling medium layer 103 through a third refrigerant pipe 303, and the second refrigerant outlet 302 is in communication with the second cooling medium layer 103 through a fourth refrigerant pipe 304, wherein the height of the outlet of the third refrigerant pipe 303 is less than the height of the inlet of the fourth refrigerant pipe 304, so that the cooling medium flowing out of the second refrigerant inlet 301 flows into the second cooling medium layer 103 through the third refrigerant pipe 303, and then the cooling medium accumulates in the second cooling medium layer 103 and rises to a certain height before flowing into the second refrigerant outlet 302 from the inlet of the fourth refrigerant pipe 304 and flowing back into the all-in-one cold and heat machine, so that the cooling medium flowing out of the second refrigerant inlet 301 can be prevented from flowing out of the second refrigerant outlet 302 without accumulating in the second cooling medium layer 103, and the accumulation amount of the cooling medium in the second cooling medium layer 103 is ensured.

[0058] Optionally, the outlet of the third refrigerant pipe 303 is located at the lower part of the second cooling medium layer 103, and the inlet of the fourth refrigerant pipe 304 is located at the top of the second cooling medium layer 103, so that the cooling medium can be accumulated below the fourth refrigerant pipe 304.

[0059] Optionally, the external component is the all-in-one cold and heat machine.

[0060] The cold and hot all-in-one machine is a temperature control device integrating heating and refrigeration functions. It can realize quick switching between heating and refrigeration in the same device to meet the precise temperature control requirements in different processes. Therefore, the first refrigerant inlet 201, the first refrigerant outlet 202, the second refrigerant inlet 301, and the second refrigerant outlet 302 are in communication with the cold and hot all-in-one machine. In this way, the cooling medium in the cold and hot all-in-one machine after being heated or cooled flows into the first cooling medium layer 101 and the second cooling medium layer 103 through the first refrigerant inlet 201 and the second refrigerant inlet 301 respectively, and then flows back to the cold and hot all-in-one machine from the first refrigerant outlet 202 and the second refrigerant outlet 302 respectively. In this way, the first refrigerant inlet 201 and the first refrigerant outlet 202 are connected in series, and the second refrigerant inlet 301 and the second refrigerant outlet 302 are connected in series. This improves the flow path of the cooling medium in the first cooling medium layer 101 and the second cooling medium layer 103, and improves the heat exchange efficiency.

[0061] Optionally, the cooling medium is fluorine oil. The cooling medium is fluorine oil, so that if the cooling medium layer or the material collection layer 102 leaks, the fluorine oil will not be ignited, improving safety. Moreover, by heating and cooling the fluorine oil, the collection cold trap can adjust the temperature in the temperature range of ±100℃, improving the temperature adjustment range.

[0062] Optionally, the external component can also be a split device. The cooling medium can also be liquid nitrogen, refrigerant, etc.

[0063] Optionally, the material collection layer 102 is provided with a material inlet 401 and a material outlet 402. The material inlet 401 is used for feeding material into the material collection layer 102, and the material outlet 402 is used for discharging material from the material collection layer 102. The material inlet 401 is located on one side of the center of the cross section of the first refrigerant medium layer.

[0064] In the embodiments of the present disclosure, the material inlet 401 and the material outlet 402 are used for the entry and exit of gaseous material. The material inlet 401 is located on one side of the center of the cross section of the first refrigerant medium layer, which can improve the movement path of the material in the material collection layer 102 and improve the storage capacity.

[0065] Optionally, the bottom of the material collection layer 102 is spaced below the bottom of the first refrigerant medium layer. The collection cold trap further comprises a discharge pipe 403, which is connected between the material outlet 402 and the material collection layer 102. The discharge pipe 403 is located in the first refrigerant medium layer and penetrates the two ends of the first refrigerant medium layer in the height direction. The inlet of the discharge pipe 403 is located at the bottom of the first refrigerant medium layer and is in communication with the material collection layer 102.

[0066] In this embodiment, the material in the material collection layer 102 flows out of the material collection layer 102 through the discharge pipe 403 and the material outlet 402. The discharge pipe 403 passes through the first cooling medium layer, so the discharge pipe 403 does not occupy the space of the material collection layer 102, thereby ensuring the storage capacity of the material collection layer 102. Moreover, since the first cooling medium layer 101 is located inside the material collection layer 102, the discharge pipe 403 located in the first cooling medium layer 101 is also close to the center of the material collection layer 102. In this way, the material in the material collection layer 102 travels a similar radial distance to the discharge pipe 403, improving the efficiency of material discharge. Furthermore, it helps to prevent blockage of material during the condensation process, improving the operational stability of the equipment.

[0067] Optionally, the bottom of the first cooling medium layer 101 is located below the center of the material collection layer 102 in the height direction. This increases the capacity of the first cooling medium layer 101 and improves the heat exchange effect. It also ensures that the inlet of the discharge pipe 403 located in the first cooling medium layer 101 is at the bottom of the material collection layer 102, so that material can be fully discharged from the material collection layer 102 through the discharge pipe 403 and the material outlet 402.

[0068] Optionally, the material inlet 401 is connected to the material collection layer 102 through the feed pipe 404. The height of the inlet of the discharge pipe 403 is less than the height of the outlet of the feed inlet. This allows the cooling medium flowing out of the material inlet 401 through the discharge pipe 403 to come into contact with the heat exchange airflow in the material collection layer 102 as early as possible, and improves the condensation path and condensation efficiency, so as to ensure that the gaseous material can be fully condensed into a solid.

[0069] Optionally, the outlet of the feed pipe 404 is located at the top of the material collection layer 102.

[0070] Optionally, such as Figure 4 As shown, the housing 10 includes a housing body, a first cover 105, a second cover 106, and a third cover 107. The housing body defines a first cooling medium layer 101, a material collection layer 102, a second cooling medium layer 103, and a thermal insulation shielding layer 104. The first cover 105 is annular and covers the top of the thermal insulation shielding layer 104. The second cover 106 is annular and covers the top of the second cooling medium layer 103. The third cover 107 is circular and covers the top of the material collection layer 102 and the first cooling medium layer 101.

[0071] In this embodiment of the disclosure, the multi-layer cover significantly improves the sealing performance of the cold trap and reduces the risk of material leakage. Moreover, since multiple chambers are covered by different covers, even if one or part of the cover leaks, it will not affect the sealing effect of other chambers.

[0072] Optionally, the height of the first cover 105 is greater than the height of the second cover 106 and the third cover 107.

[0073] In the embodiment of the present disclosure, the height of the first cover 105 is greater than the height of the second cover 106 and the third cover 107, so that the height of the heat preservation shielding layer 104 is higher than the height of the second cooling medium layer 103, the material collecting layer 102 and the first cooling medium layer 101, thereby improving the volume of the heat preservation shielding layer 104 and improving the heat preservation effect.

[0074] Optionally, the collecting cold trap further comprises a sealing ring, the sealing ring is annular, and the sealing ring is arranged at at least one of the following positions: between the first cover 105 and the shell body, between the second cover 106 and the shell body, between the third cover 107 and the shell body, between the first cover 105 and the second cover 106, and between the second cover 106 and the third cover 107; wherein the cross section of the sealing ring is C-shaped, and / or the sealing ring is an Inconel alloy spring N4 nickel metal sealing ring.

[0075] In the embodiment of the present disclosure, the sealing ring is arranged at the connection between the shell body and the cover and between the covers, so that the sealing effect of the collecting cold trap is improved, and the heat preservation effect is improved. The sealing ring is C-shaped, which can utilize the plasticity of metal to generate effective rebound load on the contact surface when compressed to form a seal. The Inconel alloy spring N4 nickel metal sealing ring refers to a nickel-based alloy with a high nickel content. Such a sealing ring has the characteristics of high temperature resistance and low corrosion, which can avoid the disadvantages of traditional materials that are not resistant to low temperature and corrosion, ensure the service life of the collecting cold trap, and also ensure the reliability of the seal.

[0076] Optionally, the collecting cold trap further comprises a temperature measuring sleeve 50, and the temperature measuring sleeve 50 is located in the material collecting layer 102 and is used for detecting the temperature of the material collecting layer 102.

[0077] In the embodiment of the present disclosure, the temperature measuring sleeve 50 can measure the temperature of the material collecting layer 102 in real time, and then control the working of the first cooling medium layer 101, the second cooling medium layer 103 and the cold and hot all-in-one machine according to the temperature of the material collecting layer 102, so as to improve the temperature regulation accuracy of the collecting cold trap.

[0078] Optionally, the temperature measuring sleeve 50 is provided with a temperature detection device.

[0079] Optionally, the shell 10 is further provided with a back blowing port 501, and the back blowing port 501 is connected with the material collecting layer 102 and the outside, and is used for blowing gas to the material collecting layer 102 to purge the material in the material collecting layer 102.

[0080] In the embodiments of the present disclosure, the material collecting layer 102 can be blown through the back blowing port 501, so that the powder material in the material collecting layer 102 can be blown away, thereby facilitating collection and processing.

[0081] Optionally, the back blowing port 501 is used to blow argon into the material collecting layer 102.

[0082] Optionally, the collecting cold trap further comprises a radiation shielding device 502, which is arranged on the heat insulation shielding layer 104 and used for shielding radiation.

[0083] In the embodiments of the present disclosure, the radiation shielding device 502 enables the collecting cold trap to have a certain radiation shielding property, so that the highly corrosive or radioactive material in the material collecting layer 102 can be prevented from causing harm to the human body outside, thereby improving the use safety.

[0084] Optionally, the radiation shielding device 502 comprises a boron-containing polyethylene plate.

[0085] In the embodiments of the present disclosure, the boron-containing polyethylene plate has excellent neutron shielding capability, can effectively absorb thermal neutrons and fast neutrons, and reduce the harm of neutron radiation to personnel and equipment. The boron-containing polyethylene plate has high density, good mechanical strength and hardness, and can withstand large pressure and impact force, and is suitable for occasions requiring structural strength. The polyethylene matrix endows the boron-containing polyethylene plate with good chemical corrosion resistance, so that it can remain stable in various chemical environments and is not easy to be corroded by acid, alkali and the like.

[0086] Optionally, the side wall of the material collecting layer 102 is made of Monel 400 material to improve corrosion resistance and further ensure the sealing effect.

[0087] Optionally, the side wall of the first cooling medium layer 101, the second cooling medium layer 103 and the heat insulation shielding layer 104 is made of 316L stainless steel material to reduce the cost.

[0088] Optionally, when the material collecting layer 102 shares a side wall with the adjacent first cooling medium layer 101 or second cooling medium layer 103, the side wall is made of Monel 400 material to improve corrosion resistance and further ensure the sealing effect.

[0089] The above description and drawings suffice to fully enable one skilled in the art to practice the embodiments of the present disclosure. Other embodiments can include structural and other changes. The embodiments are merely representative of possible variations. Individual components and functions are optional unless explicitly required, and the order of operations can be varied. Portions and features of some embodiments can be included in, or substituted for, portions and features of other embodiments. The embodiments of the present disclosure are not limited to the structures described above and shown in the drawings, and can be varied in a variety of ways. The scope of the present disclosure is limited only by the claims that follow.

Claims

1. A collection cold trap, characterized by, The collection cold trap comprises: a shell, which internally defines a first cooling medium layer, a material collection layer, a second cooling medium layer, and a heat insulation shielding layer, the material collection layer is used for collecting material, and the first cooling medium layer and the second cooling medium layer are used for introducing a cooling medium; wherein the heat insulation shielding layer, the second cooling medium layer, the material collection layer, and the first cooling medium layer are sequentially sleeved from the outside to the inside.

2. The collection cold trap according to claim 1, wherein the vertical sections of the heat insulation shielding layer, the second cooling medium layer, and the material collection layer are all in a U shape; and / or the length of the heat insulation shielding layer along the radial direction of the shell is greater than the lengths of the second cooling medium layer, the material collection layer, and the first cooling medium layer along the radial direction of the shell.

3. The collection cold trap according to claim 1, wherein the first cooling medium layer is provided with a first cooling medium inlet and a first cooling medium outlet, the first cooling medium inlet is used for communicating with a cooling medium outlet of an external component, the first cooling medium outlet is used for communicating with a cooling medium inlet of the external component, the first cooling medium inlet communicates with the first cooling medium layer through a first cooling medium pipe, and the first cooling medium outlet communicates with the first cooling medium layer through a second cooling medium pipe; wherein the first cooling medium inlet and the first cooling medium outlet are respectively located on the opposite sides of the center of the cross section of the first cooling medium layer, and / or the height of the outlet of the first cooling medium pipe is less than the height of the inlet of the second cooling medium pipe.

4. The collection cold trap according to claim 1, wherein the second cooling medium layer is provided with a second cooling medium inlet and a second cooling medium outlet, the second cooling medium inlet is used for communicating with a cooling medium outlet of an external component, the second cooling medium outlet is used for communicating with a cooling medium inlet of the external component, the second cooling medium inlet communicates with the second cooling medium layer through a third cooling medium pipe, and the second cooling medium outlet communicates with the second cooling medium layer through a fourth cooling medium pipe; wherein the first cooling medium inlet and the second cooling medium outlet are respectively located on the opposite sides of the center of the cross section of the first cooling medium layer, and / or the height of the outlet of the third cooling medium pipe is less than the height of the inlet of the fourth cooling medium pipe.

5. The collection cold trap according to claim 1, wherein the material collection layer is provided with a material inlet and a material outlet, the material inlet is used for feeding material into the material collection layer, the material outlet is used for discharging material out of the material collection layer, the material outlet communicates with the material collection layer through a discharging pipe, and the material inlet communicates with the material collection layer through a feeding pipe; wherein the material inlet is located on one side of the center of the cross section of the first cooling medium layer, and / or the height of the inlet of the discharging pipe is less than the height of the outlet of the feeding pipe.

6. The collection cold trap according to claim 5, wherein the bottom of the material collection layer is spaced below the bottom of the first cooling medium layer, the discharging pipe is located in the first cooling medium layer and penetrates through both ends of the first cooling medium layer in the height direction, and the inlet of the discharging pipe is located at the bottom of the first cooling medium layer and communicates with the material collection layer.

7. The collection cold trap of claim 1, wherein, The shell comprises: a shell body, which defines a first cooling medium layer, a material collection layer, a second cooling medium layer, and a heat insulation shielding layer; a first cover body, which is annular and covers the top of the heat insulation shielding layer; a second cover body, which is annular and covers the top of the second cooling medium layer. The third cover body is circular, and covers the top of the material collection layer and the first cooling medium layer.

8. The collection cold trap according to claim 7, characterized in that, The height of the first cover body is greater than the height of the second cover body and the third cover body. And / or, Further comprising: A sealing ring in the shape of a ring is arranged between the first cover body and the shell body, between the second cover body and the shell body, between the third cover body and the shell body, between the first cover body and the second cover body, and between the second cover body and the third cover body. The cross section of the sealing ring is C-shaped, and / or the sealing ring is an Inconel alloy spring N4 nickel metal sealing ring.

9. The collection cold trap of any one of claims 1 to 8, wherein, Further comprising: A temperature measuring sleeve is arranged in the material collection layer for detecting the temperature of the material collection layer. And / or, The shell is further provided with a back blowing port, which communicates with the material collection layer and the outside, and is used for blowing gas to the material collection layer to purge the material in the material collection layer. And / or, Further comprising: A radiation shielding device is arranged in the heat preservation shielding layer for shielding radiation.

10. The collection cold trap of claim 9, wherein, When the collection cold trap comprises a radiation shielding device, the radiation shielding device comprises a boron-containing polyethylene plate.

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