Gas detection device and working disc

Abstract

The utility model discloses a gas detection device and working disc wherein the gas detection device comprises: a conveying assembly, a sampling assembly, a measuring assembly and a desorption assembly, the conveying assembly is used for conveying an adsorption member capable of adsorbing target nuclide to pass through the sampling assembly, the measuring assembly and the desorption assembly in order, the adsorption member adsorbs the target nuclide at the sampling assembly, and the desorption assembly is used for desorbing the target nuclide. The target nuclide is measured at the measuring assembly, automatic detection of the target nuclide is achieved, the detection cost is low, the detection efficiency is higher, the adsorbed target nuclide is released at the desorption assembly, activation and regeneration of the adsorption part are achieved, the adsorption part is more convenient to use and can be recycled, and the use cost of the adsorption part is lower. The device is applied to the field of radioactive gas detection.

Description

Technical Field

[0001] The utility model relates to the field of radioactive gas detection, in particular to a gas detection device and a working disk. Background Art

[0002] Nuclear power plants generate and release radioactive materials into the environment during their operations. The noble gas isotopes Kr-85 and Rn-222 are two characteristic radionuclides used in public radiological impact assessments. To ensure public and environmental safety, the radioactivity of nuclear power plant effluents must meet emission control limits approved by the Ministry of Ecology and Environment. With the continued development of nuclear energy, public concern about nuclear safety is increasing, and national regulatory authorities have tightened their standards for radiation environmental monitoring. Because Kr-85 is beta-radioactive and Rn-222 is alpha-radioactive, current radioactive gas detection methods cannot detect both Kr-85 and Rn-222 simultaneously. Kr-85 is typically sampled, enriched, and concentrated before being measured in a laboratory using a liquid scintillation detector. Rn-222 is typically measured using a pulsed ionization chamber, continuously sampling and measuring radon concentrations in ambient air. However, both methods suffer from complex sampling processes, lengthy measurement times, low detection efficiency, and high uncertainty.

[0003] Prior to measuring Kr-85 and Rn-222, conventional techniques require the use of adsorbent materials to separate and enrich the radioactive gases, followed by desorption of the adsorbent material that has adsorbed the target nuclides. This sampling and testing method takes a long time, and each step requires manual intervention, increasing both the time and labor costs of testing and introducing uncertainty in the measurement results. Utility Model Content

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a gas detection device that can automatically detect, reduce usage costs, and improve detection efficiency and convenience.

[0005] A working disk is also proposed.

[0006] The gas detection device according to the first embodiment of the present invention includes:

[0007] The conveying assembly includes a conveying surface, a working disk provided on the conveying surface, a sampling position, a measuring position, and a desorption position. The conveying surface is used to convey the working disk through the sampling position, the measuring position, and the desorption position. The working disk includes a disk body and an adsorbent. The disk body is connected to the conveying surface and has a working surface away from the conveying surface. The adsorbent is provided on the working surface and is used to adsorb target nuclides.

[0008] a sampling assembly disposed at the sampling position, the sampling assembly being capable of sealingly cooperating with the working disk located at the sampling position and defining a sealed sampling chamber together with the working surface, the sampling assembly being used to draw the radioactive gas into the sampling chamber so that the adsorbent adsorbs the target nuclide;

[0009] a measuring component, disposed at the measuring position, for measuring the target nuclide adsorbed by the adsorbent;

[0010] A desorption component is provided at the desorption position. The desorption component can be sealed with the working disk located at the desorption position and define a closed desorption chamber together with the working surface. The desorption component is used to release and transfer the target nuclides adsorbed by the adsorbent.

[0011] The gas detection device according to the embodiment of the first aspect of the present utility model has at least the following beneficial effects:

[0012] 1. The conveying assembly transports the working disc through the sampling position, measurement position and desorption position in sequence, so that the adsorbent adsorbs the target nuclide through the sampling assembly, detects the content of the target nuclide through the measurement assembly, and then releases the target nuclide through the desorption assembly, thus realizing the automatic detection of the target nuclide and the cleaning and regeneration of the adsorbent. The adsorbent can cycle the adsorption-measurement-desorption process, making the use of the adsorbent more convenient and reducing costs.

[0013] 2. The sampling component forms a sealed sampling chamber, allowing the adsorbent to fully adsorb the target nuclides, which are not easily dissipated into the air and caused to be lost, thereby improving the adsorption accuracy of the adsorbent and the subsequent measurement accuracy; the desorption component forms a sealed desorption chamber, allowing the adsorbent to release and transfer the target nuclides, avoiding affecting the next round of detection of the adsorbent, so that the adsorbent can detect different target nuclides in the next round of detection, making detection more convenient.

[0014] According to some embodiments of the present invention, the sampling position, the measuring position and the desorption position are arranged in sequence along the conveying direction of the conveying surface.

[0015] According to some embodiments of the present invention, the sampling assembly includes a sampling housing, wherein one end of the sampling housing facing the conveying surface defines a sampling port;

[0016] The working disk further includes a first sealing member and a second sealing member both provided on the working surface, wherein the first sealing member surrounds the adsorption member, and the second sealing member surrounds the first sealing member;

[0017] The sampling housing can be inserted between the first sealing member and the second sealing member at the location of the sampling port, and can be sealed with the first sealing member and the second sealing member.

[0018] According to some embodiments of the present invention, the disk body defines a mounting portion on the working surface, and the mounting portion is used to install and fix the first sealing member and the second sealing member.

[0019] According to some embodiments of the present invention, the conveying assembly includes an active roller, a driven roller, a conveyor belt that transmits power to connect the active roller and the driven roller, and a first driving source. The first driving source is transmitted and connected to the active roller to drive the active roller to rotate around the axial direction of the active roller. The side of the conveyor belt away from the active roller is the conveying surface.

[0020] According to some embodiments of the present invention, the working disc includes a connecting piece provided on a side of the disc body facing the conveyor belt, the connecting piece is arranged in a direction parallel to the conveying surface and perpendicular to the conveying direction, and the disc body is connected to the conveyor belt through the connecting piece.

[0021] According to some embodiments of the present invention, the conveying assembly includes a turntable and a second driving source transmission-connected to the turntable, the second driving source is used to drive the turntable to rotate around the axial direction of the turntable, and an end face of the turntable along the axial direction of the turntable is the conveying surface.

[0022] According to some embodiments of the present invention, the sampling assembly includes:

[0023] a sampling housing, facing the conveying surface and capable of moving relative to the conveying surface, the sampling housing and the working surface jointly defining the sealed sampling chamber;

[0024] a gas transport component, connected to the sampling housing and used to transport the radioactive gas into the sampling chamber or extract the air in the sampling chamber;

[0025] The first temperature control component is used to adjust the temperature inside the sampling chamber.

[0026] According to some embodiments of the present invention, the measuring component includes:

[0027] a measuring housing, facing the conveying surface and movable relative to the conveying surface, the measuring housing and the working surface jointly defining a sealed measuring chamber;

[0028] a detector, disposed in the measurement housing, for detecting the target nuclide adsorbed by the adsorbent;

[0029] The second temperature control component is used to adjust the temperature inside the measurement chamber.

[0030] According to some embodiments of the present invention, the desorption component includes:

[0031] a desorption shell, facing the conveying surface and capable of moving relative to the conveying surface, wherein the desorption shell and the working surface can jointly define a sealed desorption chamber;

[0032] a heating element, disposed in the desorption shell and used to heat the adsorption element so as to cause the adsorption element to release the adsorbed target nuclide;

[0033] The transfer element is connected to the desorption shell and is used to transfer the target nuclide released by the adsorption element.

[0034] The working disk according to the second embodiment of the present invention includes:

[0035] A disc body having a working surface;

[0036] an adsorption member, disposed on the working surface and used for adsorbing target nuclides;

[0037] A first seal and a second seal are both provided on the working surface, the first seal surrounds the adsorption component, the second seal surrounds the first seal, and the first seal and the second seal are used together to seal with the sampling component, the measuring component or the desorption component.

[0038] According to the working disk of the embodiment of the second aspect of the present invention, there are at least the following beneficial effects: the first sealing member and the second sealing member can be sealed and cooperated with the sampling component to form a closed sampling chamber for the adsorption member to adsorb the target nuclide; and can be sealed and cooperated with the measuring component to form a closed measuring chamber to detect the target nuclide adsorbed by the adsorption member; and can also be sealed and cooperated with the desorption component to form a closed desorption chamber to release the target nuclide adsorbed by the adsorption member, thereby realizing the detection of the target nuclide and the activation and regeneration of the adsorption member. The adsorption member can be reused multiple times, with lower usage cost and more convenient use.

[0039] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0041] Figure 1 This is a schematic structural diagram of a gas detection device according to an embodiment of the present invention, wherein the sampling component, the measuring component, and the desorption component are not sealed with the working disk;

[0042] Figure 2 This is a structural diagram of a gas detection device according to an embodiment of the present invention, in which the sampling component, the measuring component and the desorption component are all sealed with the working disk;

[0043] Figure 3 This is a structural diagram of a working disk in a gas detection device according to an embodiment of the present utility model;

[0044] Figure 4 This is a structural schematic diagram of another arrangement of the sampling component, the measuring component and the desorption component in the gas detection device of an embodiment of the present utility model.

[0045] Figure Number:

[0046] Conveying assembly 100; working disc 110; disc body 111; adsorption member 112; first sealing member 113; second sealing member 114; mounting portion 115; driving roller 120; driven roller 130; conveyor belt 140;

[0047] Sampling assembly 200; sampling housing 210; gas transfer assembly 220; air inlet pipe 221; air outlet pipe 222; first temperature control assembly 230;

[0048] Measuring assembly 300; measuring housing 310; detector 320; second temperature control assembly 330;

[0049] Desorption assembly 400 ; desorption housing 410 ; heating element 420 ; transfer element 430 . DETAILED DESCRIPTION

[0050] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0051] In the description of the present invention, it should be understood that descriptions involving orientation, such as the orientation or positional relationship indicated by up, down, etc., are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0052] In the description of this utility model, "a number" refers to one or more, and "a plurality" refers to two or more. The use of "first" or "second" is solely for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of the indicated technical features, or implicitly indicating the order of the indicated technical features.

[0053] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0054] Reference Figures 1 to 4 As shown, the first embodiment of the present invention proposes a gas detection device, which includes: a conveying component 100, a sampling component 200, a measuring component 300 and a desorption component 400. The conveying component 100 is used to convey an adsorption component 112 capable of adsorbing target nuclides through the sampling component 200, the measuring component 300 and the desorption component 400 in sequence. The adsorption component 112 adsorbs the target nuclides at the sampling component 200 and measures the target nuclides at the measuring component 300, thereby realizing automatic detection of the target nuclides, low detection cost and higher detection efficiency, and releasing the adsorbed target nuclides at the desorption component 400 to realize activation and regeneration of the adsorption component 112. The adsorption component 112 is more convenient to use and can be recycled, and the use cost of the adsorption component 112 is lower.

[0055] In this embodiment, the conveyor assembly 100 includes a conveying surface, a work tray 110 disposed on the conveying surface, a sampling position, a measurement position, and a desorption position. The conveying surface can be a flat surface, such as a conveying surface formed by a continuous belt or chain, or a virtual surface formed by multiple contact lines, such as a surface formed by multiple rollers. The sampling position, measurement position, and desorption position are all fixed positions and do not move with the conveying surface. Therefore, during the conveying process of the conveyor assembly 100, the conveying surface is used to transport the work tray 110 through the sampling position, measurement position, and desorption position.

[0056] The working disk 110 includes a disk body 111 and an adsorbent 112. The disk body 111 can be rectangular, circular, or other shaped. The bottom surface of the disk body 111 is connected to the conveying surface, and the top surface of the disk body 111 is the working surface. The adsorbent 112 is located on the working surface. The adsorbent 112 can be indirectly located on the working surface via a base or directly located on the working surface. The adsorbent 112 is a porous material capable of adsorbing target nuclides. The porous material has a highly ordered reticular structure with a large specific surface area, providing suitable adsorption and storage space, thereby enhancing the porous material's adsorption capacity for the target nuclides. The adsorbent 112 can also be other materials capable of adsorbing target nuclides.

[0057] The sampling assembly 200 is arranged at the sampling position. The sampling assembly 200 is opposite to the conveying surface and can move relative to the conveying surface. After the working disk 110 moves to the sampling position, the sampling assembly 200 moves toward the conveying surface until the sampling assembly 200 is sealed and matched with the working disk 110 located at the sampling position. At this time, the sampling assembly 200 and the working surface jointly define a closed sampling chamber. The sampling assembly 200 is used to transport radioactive gas containing target nuclides into the sampling chamber so that the adsorbent 112 adsorbs the target nuclides.

[0058] The measuring assembly 300 is provided at the measuring position and is used to measure the target nuclides adsorbed by the adsorption element 112. The measuring assembly 300 can detect the target nuclides in a closed environment or in an open environment.

[0059] The desorption assembly 400 is arranged at the desorption position. The desorption assembly 400 is opposite to the conveying surface and can move relative to the conveying surface. After the working disk 110 moves to the sampling position, the desorption assembly 400 moves toward the conveying surface until the desorption assembly 400 can be sealed with the working disk 110 located at the desorption position, and together with the working surface, define a closed desorption chamber. The desorption assembly 400 is used to release and transfer the target nuclides adsorbed by the adsorbent 112.

[0060] It is worth understanding that the conveying component 100 conveys the working disk 110 through the sampling position, the measuring position and the desorption position in sequence, so that the adsorbent 112 adsorbs the target nuclide through the sampling component 200, and detects the content of the target nuclide through the measuring component 300, and then releases the target nuclide through the desorption component 400, thereby realizing the automatic detection of the target nuclide and the cleaning and regeneration of the adsorbent 112, so that the adsorbent 112 can cycle the adsorption-measurement-desorption process, the use of the adsorbent 112 is more convenient, and the cost can be reduced; the sampling component 200 forms a closed sampling chamber, so that the adsorbent 112 fully adsorbs the target nuclide, and the target nuclide is not easily dissipated into the air and caused to be lost, thereby improving the adsorption accuracy and subsequent measurement accuracy of the adsorbent 112; the desorption component 400 forms a closed desorption chamber, so that the adsorbent 112 can release and transfer the target nuclide to avoid affecting the new round of detection of the adsorbent 112, so that the adsorbent 112 can detect different target nuclides in the new round of detection, and the detection is more convenient.

[0061] In addition, after the adsorption element 112 completes the desorption action, the adsorption element 112 has not yet entered the next cycle, and the adsorption element 112 is directly cooled in the air, so that the temperature of the adsorption element 112 is reduced to perform a new round of detection.

[0062] Reference Figure 1 and Figure 2As shown, in some specific embodiments of the present invention, the sampling position, the measuring position and the desorption position are arranged in sequence along the conveying direction of the conveying surface.

[0063] It is worth understanding that the working disc 110 transported by the transport assembly 100 can sequentially pass through the sampling position, the measuring position and the desorption position along the same transport direction. The transport steps of the working disc 110 are simpler and more convenient to use.

[0064] Among them, when there are multiple working disks 110, when the first working disk 110 passes the sampling position and moves to the measurement position, the second working disk 110 is just at the sampling position. Similarly, there can be three working disks 110 located at the sampling position, measurement position and desorption position respectively, and sampling, measurement and desorption are performed simultaneously. The gas detection device can continuously detect multiple working disks 110 at the same time, greatly improving the detection efficiency of the target nuclide.

[0065] As another embodiment, refer to Figure 4 As shown, the sampling position, the measuring position, and the desorption position can also be set arbitrarily along the conveying direction. The conveying component 100 only needs to convey the working disk 110 in the order of the sampling position, the measuring position, and the desorption position. The working disk 110 still passes through the sampling position, the measuring position, and the desorption position in sequence.

[0066] Reference Figure 1 、 Figure 2 and Figure 3 As shown, in some specific embodiments of the present invention, the sampling assembly 200 includes a sampling shell 210, which defines a sampling port at one end facing the conveying surface; the working disk 110 also includes a first seal 113 and a second seal 114, both of which are arranged on the working surface, the first seal 113 surrounds the adsorption member 112, and the second seal 114 surrounds the first seal 113; wherein, the sampling shell 210 can be inserted between the first seal 113 and the second seal 114 at the location of the sampling port, and sealed with the first seal 113 and the second seal 114.

[0067] In this embodiment, the sampling shell 210 includes a top wall and a peripheral wall connected to the top wall at one end, and the other end of the peripheral wall directly encloses to form a sampling port, wherein the portion of the peripheral wall located at the sampling port is thin-walled, so that the peripheral wall can be inserted between the first sealing member 113 and the second sealing member 114 with the thin-walled portion, the first sealing member 113 is sealed with the inner peripheral surface of the peripheral wall, and the second sealing member 114 is sealed with the outer peripheral surface of the peripheral wall, so that the sealing effect between the sampling shell 210 and the first sealing member 113 and the second sealing member 114 is better.

[0068] The first seal 113 and the second seal 114 are both annular sealing rings, and the first seal 113 and the second seal 114 are both in the shape of a circular ring. The contact portion between the first seal 113 and the second seal 114 is a line contact, which makes it easier for the peripheral wall to be inserted between the first seal 113 and the second seal 114. The contact portion between the first seal 113 and the peripheral wall and the contact portion between the second seal 114 and the peripheral wall can also be regarded as line contact. The contact area of ​​the line contact is small, which makes the local pressure greater, and the sealing effect of the first seal 113 and the second seal 114 is better.

[0069] The first seal 113 and the second seal 114 can be surrounded by a circle, rectangle or other closed shape, and the shape of the sampling port of the sampling shell 210 is consistent with the shape between the first seal 113 and the second seal 114 so as to be inserted between the first seal 113 and the second seal 114.

[0070] Reference Figure 3 As shown, in some specific embodiments of the present invention, the disc body 111 defines a mounting portion 115 on the working surface, and the mounting portion 115 is used to mount and fix the first sealing member 113 and the second sealing member 114 .

[0071] In this embodiment, the mounting portion 115 includes a first mounting protrusion and a second mounting protrusion. The first mounting protrusion surrounds the adsorption member 112, and the second mounting protrusion surrounds the first mounting protrusion and is spaced apart from the first mounting protrusion. A mounting groove is formed between the first mounting protrusion and the second mounting protrusion, and the first sealing member 113 and the second sealing member 114 are installed and fixed in the mounting groove.

[0072] Among them, a first stop portion and a second stop portion are provided at the slot position of the mounting groove, and the first stop portion and the second stop portion are both located directly above the bottom of the mounting groove, and the first stop portion and the second stop portion are spaced apart, and the spacing area is aligned with the area between the first seal 113 and the second seal 114 to form a sealed channel for the peripheral wall to be inserted between the first seal 113 and the second seal 114, the first stop portion is used to stop the top of the first seal 113, and the second stop portion is used to stop the top of the second seal 114, so that when the peripheral wall is separated from the first seal 113 and the second seal 114, the first stop portion restricts the first seal 113 and the second stop portion restricts the second seal 114, so that the first seal 113 and the second seal 114 cannot leave the mounting groove together with the sampling shell 210, the first seal 113 and the second seal 114 can be restricted in the mounting groove and can be recycled many times without adjusting their own positions, and the first seal 113 and the second seal 114 are more convenient to use.

[0073] Reference Figure 1 and Figure 2As shown, in some specific embodiments of the present invention, the conveying assembly 100 includes an active roller 120, a driven roller 130, a conveyor belt 140 that is transmission-connected to the active roller 120 and the driven roller 130, and a first driving source. The first driving source is transmission-connected to the active roller 120 to drive the active roller 120 to rotate around the axial direction of the active roller 120. The side of the conveyor belt 140 away from the active roller 120 is the conveying surface.

[0074] In this embodiment, the first driving source is a motor, which drives the active roller 120 to rotate. The active roller 120 then drives the driven roller 130 to rotate through the tension of the conveyor belt 140, thereby realizing the rotation of the conveyor belt 140. The side of the conveyor belt 140 away from the active roller 120 is the conveying surface, wherein the conveyor belt 140 includes a top surface away from the ground and a bottom surface facing the ground. The sampling position, measurement position and desorption position can be at least partially located on the top surface of the conveyor belt 140, or can be entirely located on the bottom surface of the conveyor belt 140.

[0075] In some specific embodiments of the present invention, the working disk 110 includes a connecting piece arranged on the side of the disk body 111 facing the conveyor belt 140. The connecting piece is arranged in a direction parallel to the conveying surface and perpendicular to the conveying direction. The disk body 111 is connected to the conveyor belt 140 through the connecting piece.

[0076] It is worth noting that when the conveyor belt 140 transports the work tray 110 to the location of the active roller 120 or the driven roller 130, the work tray 110 rotates around the active roller 120 or the driven roller 130 via the connecting member, thereby achieving overall rotation of the work tray 110. The connecting member is arranged parallel to the conveying surface and perpendicular to the conveying direction. In other words, the connecting member is arranged along the axial direction of the active roller 120. When the active roller 120 rotates, the connecting member can rotate along the outer circumference of the active roller 120 with little deformation. This makes the work tray 110 less susceptible to interference from the curved conveyor belt 140, and the conveying of the work tray 110 is more stable. In this embodiment, the connecting member is located at the center of the work tray 110 along the conveying direction.

[0077] In some specific embodiments of the present invention, the conveying assembly 100 includes a turntable and a second driving source connected to the turntable, the second driving source is used to drive the turntable to rotate around the axial direction of the turntable, and one end surface of the turntable along the axial direction of the turntable is the conveying surface.

[0078] In this embodiment, the second drive source is a motor that drives the turntable to rotate. Both end surfaces of the turntable, perpendicular to the axis of rotation, can form conveying surfaces. For example, if the turntable is disc-shaped, it is a frustum, with the axis of the frustum serving as the axis of rotation and the end surfaces serving as conveying surfaces. The turntable can also have other shapes, such as a rectangular solid. The sampling, measurement, and desorption stations can be at least partially located on one end surface of the turntable, or entirely located on the other end surface of the conveyor belt 140.

[0079] Reference Figure 1 、 Figure 2 and Figure 4 As shown, in some specific embodiments of the present invention, the sampling assembly 200 includes: a sampling shell 210, a gas transfer assembly 220 and a first temperature control assembly 230. The sampling shell 210 faces the conveying surface and can move relative to the conveying surface. The sampling shell 210 can jointly define a closed sampling chamber with the working surface; the gas transfer assembly 220 is connected to the sampling shell 210, and is used to transport radioactive gas containing target nuclides into the sampling chamber or extract air from the sampling chamber; the first temperature control assembly 230 is used to adjust the temperature inside the sampling chamber.

[0080] In this embodiment, the gas transfer component 220 includes an air pump, an air inlet pipe 221 and an air outlet pipe 222, both of which are connected to the sampling chamber. The air inlet pipe 221 is connected to an external gas source, which can be a gas storage container filled with radioactive gas or a pipe that is discharging radioactive gas. The air outlet pipe 222 is connected to the air pump to vacuum the sampling chamber before transporting the radioactive gas. After vacuuming, the air inlet pipe 221 transports the radioactive gas into the sampling chamber.

[0081] The first temperature control component 230 can heat the adsorption element 112 during the vacuuming process of the sampling chamber, so that the impurities adsorbed in the adsorption element 112 are extracted together with the vacuum pump. When the vacuuming is about to end, the first temperature control component 230 controls the temperature of the adsorption element 112 to return to room temperature, so that the adsorption element 112 can adsorb the target nuclide.

[0082] Among them, the sampling component 200 also includes a first lifting member, which is a screw slide structure or a telescopic motor structure. The first lifting member is directly connected to the sampling shell 210 so that the sampling shell 210 moves relative to the conveying surface. When sampling is required, the first lifting member drives the sampling shell 210 to move toward the conveying surface until the sampling shell 210 is sealed with the working disk 110. When the sampling is completed, the first lifting member drives the sampling shell 210 away from the conveying surface, and the sampling shell 210 is separated from the working disk 110 without interfering with the conveying of the working disk 110; wherein, the air inlet pipe 221 and the air outlet pipe 222 are hoses to adapt to the lifting and lowering of the sampling shell 210.

[0083] Reference Figure 1 、 Figure 2 and Figure 4As shown, in some specific embodiments of the present invention, the measuring component 300 includes: a measuring shell 310, a detector 320 and a second temperature control component 330. The measuring shell 310 faces the conveying surface and can move relative to the conveying surface. The measuring shell 310 can jointly define a closed measuring chamber with the working surface; the detector 320 is arranged in the measuring shell 310, and the detector 320 is used to detect the target nuclide adsorbed by the adsorption element 112; the second temperature control component 330 is used to adjust the temperature in the measuring chamber.

[0084] It is worth noting that the detector 320 performs detection in a sealed measurement chamber, which reduces the impact of the target nuclide on the staff and the environment and improves the safety of use.

[0085] In this embodiment, the shape of the measurement port of the measurement housing 310 matches the shape of the sampling port of the sampling housing 210, facilitating insertion between the first seal 113 and the second seal 114 of a work disk 110 of the same specifications, thereby achieving a sealed fit between the measurement housing 310 and the work disk 110. The detector 320 is a radiation detector 320, such as a microstructured gas detector 320, a semiconductor detector 320, a plastic scintillator detector 320, or a gas-flow proportional technology tube. The second temperature control assembly 330 is used to regulate the temperature within the measurement chamber to room temperature, thereby stabilizing the temperature of the adsorbent 112 at room temperature and preventing the adsorbent 112 from releasing adsorbed target nuclides due to high temperatures.

[0086] Among them, the measuring component 300 also includes a second lifting member, which is a screw slide structure or a telescopic motor structure. The second lifting member is directly connected to the measuring shell 310 so that the measuring shell 310 moves relative to the conveying surface. When measurement is required, the second lifting member drives the measuring shell 310 to move toward the conveying surface until the measuring shell 310 is sealed with the working disk 110. When the measurement is completed, the second lifting member drives the measuring shell 310 away from the conveying surface, and the measuring shell 310 is separated from the working disk 110 without interfering with the conveying of the working disk 110; to adapt to the lifting and lowering of the measuring shell 310.

[0087] Reference Figure 1 、 Figure 2 and Figure 4 As shown, in some specific embodiments of the present invention, the desorption assembly 400 includes: a desorption shell 410, a heating element 420 and a transfer element 430. The desorption shell 410 faces the conveying surface and can move relative to the conveying surface. The desorption shell 410 can jointly define a closed desorption chamber with the working surface; the heating element 420 is arranged in the desorption shell 410, and is used to heat the adsorption element 112 so that the adsorption element 112 releases the adsorbed target nuclides; the transfer element 430 is connected to the desorption shell 410, and is used to transfer the target nuclides released by the adsorption element 112.

[0088] It is worth understanding that the desorption chamber is heated by the heating element 420, so that the adsorption element 112 is heated to release the adsorbed target nuclides, and then the released target nuclides are transferred through the transfer element 430 to achieve the regeneration and activation of the adsorption element 112. After the regeneration and activation of the adsorption element 112, the adsorption-measurement-desorption process can be circulated, thereby reducing the use cost and improving production efficiency.

[0089] In this embodiment, the shape of the desorption port of the desorption shell 410 is consistent with the shape of the sampling port of the sampling shell 210, making it easy to insert between the first seal 113 and the second seal 114 of the working disk 110 of the same specification, thereby achieving a sealed fit between the measuring shell 310 and the working disk 110. The heating element 420 is arranged inside the desorption shell 410 to directly heat the adsorption element 112. It can also be arranged outside the desorption shell 410 to first heat the desorption shell 410 and then heat the adsorption element 112. The heating element 420 can be a resistance heater. The transfer element 430 includes a transfer pipe connected to the desorption shell 410. The transfer pipe is directly connected to the desorption chamber. The transfer pipe can be connected to an inert gas source to remove the target nuclide by delivering inert gas, or the transfer pipe can be connected to an exhaust pump to remove the target nuclide by exhausting gas. The target nuclide is then discharged after being decontaminated.

[0090] Among them, the desorption component 400 also includes a third lifting member, which is a screw slide structure or a telescopic motor structure. The third lifting member is directly connected to the desorption shell 410 so that the desorption shell 410 moves relative to the conveying surface. When desorption is required, the third lifting member drives the desorption shell 410 to move toward the conveying surface until the desorption shell 410 is sealed with the working disk 110. When desorption is completed, the third lifting member drives the desorption shell 410 away from the conveying surface, and the desorption shell 410 is separated from the working disk 110 without interfering with the conveying of the working disk 110; wherein, the transfer pipe is a hose to adapt to the lifting and lowering of the desorption shell 410.

[0091] Reference Figure 3 As shown, the second embodiment of the present invention proposes a working disk 110, which includes: a disk body 111, an adsorbent 112, a first seal 113 and a second seal 114, the disk body 111 has a working surface; the adsorbent 112 is arranged on the working surface and is used to adsorb target nuclides; the first seal 113 and the second seal 114 are both arranged on the working surface, the first seal 113 surrounds the adsorbent 112, and the second seal 114 surrounds the first seal 113, and the first seal 113 and the second seal 114 are used together to seal with the sampling component 200, the measuring component 300 or the desorption component 400.

[0092] It is worth understanding that the first seal 113 and the second seal 114 can be sealed with the sampling component 200 to form a closed sampling chamber for the adsorbent 112 to adsorb the target nuclide; and can be sealed with the measuring component 300 to form a closed measuring chamber to detect the target nuclide adsorbed by the adsorbent 112; and can also be sealed with the desorption component 400 to form a closed desorption chamber to release the target nuclide adsorbed by the adsorbent 112, thereby realizing the detection of the target nuclide and the activation and regeneration of the adsorbent 112. The adsorbent 112 can be reused multiple times, with lower cost and more convenient use.

[0093] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A gas detection device for detecting radioactive gas containing a target nuclide, characterized in that: include: The conveying assembly includes a conveying surface, a working disk provided on the conveying surface, a sampling position, a measuring position, and a desorption position. The conveying surface is used to convey the working disk through the sampling position, the measuring position, and the desorption position. The working disk includes a disk body and an adsorbent. The disk body is connected to the conveying surface and has a working surface away from the conveying surface. The adsorbent is provided on the working surface and is used to adsorb target nuclides. a sampling assembly disposed at the sampling position, the sampling assembly being capable of sealingly cooperating with the working disk located at the sampling position and defining a sealed sampling chamber together with the working surface, the sampling assembly being used to transport the radioactive gas into the sampling chamber so that the adsorbent adsorbs the target nuclide; a measuring component, disposed at the measuring position, for measuring the target nuclide adsorbed by the adsorbent; A desorption component is provided at the desorption position. The desorption component can be sealed with the working disk located at the desorption position and define a closed desorption chamber together with the working surface. The desorption component is used to release and transfer the target nuclides adsorbed by the adsorbent.

2. The gas detection device according to claim 1, characterized in that: The sampling position, the measuring position and the desorption position are arranged in sequence along the conveying direction of the conveying surface.

3. The gas detection device according to claim 1, characterized in that: The sampling assembly includes a sampling housing, wherein one end of the sampling housing facing the conveying surface defines a sampling port; The working disk further includes a first sealing member and a second sealing member both provided on the working surface, wherein the first sealing member surrounds the adsorption member, and the second sealing member surrounds the first sealing member; The sampling housing can be inserted between the first sealing member and the second sealing member at the location of the sampling port, and can be sealed with the first sealing member and the second sealing member.

4. The gas detection device according to claim 1, characterized in that: The conveying assembly includes a driving roller, a driven roller, a conveyor belt that transmits power to connect the driving roller and the driven roller, and a first driving source. The first driving source is connected to the driving roller to drive the driving roller to rotate around the axial direction of the driving roller. The side of the conveyor belt away from the driving roller is the conveying surface.

5. The gas detection device according to claim 4, characterized in that: The working disc includes a connecting piece provided on a side of the disc body facing the conveyor belt. The connecting piece is arranged in a direction parallel to the conveying surface and perpendicular to the conveying direction. The disc body is connected to the conveyor belt through the connecting piece.

6. The gas detection device according to claim 1, characterized in that: The conveying assembly includes a turntable and a second driving source transmission-connected to the turntable, the second driving source is used to drive the turntable to rotate around the axial direction of the turntable, and an end surface of the turntable along the axial direction of the turntable is the conveying surface.

7. The gas detection device according to claim 1, characterized in that: The sampling assembly comprises: a sampling housing, facing the conveying surface and capable of moving relative to the conveying surface, the sampling housing and the working surface jointly defining the sealed sampling chamber; a gas transport component, connected to the sampling housing and used to transport the radioactive gas into the sampling chamber or extract the air in the sampling chamber; The first temperature control component is used to adjust the temperature inside the sampling chamber.

8. The gas detection device according to claim 1, characterized in that: The measurement component includes: a measuring housing, facing the conveying surface and movable relative to the conveying surface, the measuring housing and the working surface jointly defining a sealed measuring chamber; a detector, disposed in the measurement housing, for detecting the target nuclide adsorbed by the adsorbent; The second temperature control component is used to adjust the temperature inside the measurement chamber.

9. The gas detection device according to claim 1, characterized in that: The desorption component comprises: a desorption shell, facing the conveying surface and capable of moving relative to the conveying surface, wherein the desorption shell and the working surface can jointly define a sealed desorption chamber; a heating element, disposed in the desorption shell and used to heat the adsorption element so as to cause the adsorption element to release the adsorbed target nuclide; The transfer element is connected to the desorption shell and is used to transfer the target nuclide released by the adsorption element.

10. A working disk, characterized in that: include: A disc body having a working surface; an adsorption member, disposed on the working surface and used for adsorbing target nuclides; A first seal and a second seal are both provided on the working surface, the first seal surrounds the adsorption component, the second seal surrounds the first seal, and the first seal and the second seal are used together to seal with the sampling component, the measuring component or the desorption component.

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