Portable small protective workstation for alpha nuclide operation

Abstract

A portable small protective workstation for alpha nuclide operation comprises a protective cabin, a transparent window and glove holes are formed in the front side face of the protective cabin, radiation-resistant operating gloves are embedded in the glove holes in a sealed mode, a tray inlet is formed in the side face of the protective cabin, and a drawer type bracket is connected to the tray inlet in a sliding mode. The drawer type bracket comprises a tray layer, a cushion layer and a cover plate, the tray layer and the cushion layer are both vertically and fixedly connected to the side face of the cover plate, the tray layer is located above the cushion layer, a high-adsorbability radioactive water absorption pad is fixedly installed on the cushion layer, a plurality of through holes are formed in the bottom face of the tray layer, and the tray layer and the cushion layer are movably installed in the protection cabin body through a tray inlet. The cover plate abuts against the outer side face of the protection cabin in a sealed mode. An air filter box is arranged above the protective cabin body, and a filter layer is arranged in the air filter box. According to the utility model, the defects in the prior art are overcome, and the organic unification of radiation protection, pollution control and experiment convenience for operators is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of radioactive experiment protection, and particularly relates to a portable small protection workstation for alpha nuclide operation. Background Art

[0002] With the wide application of radioactive nuclides in the fields of tumor targeted therapy, molecular imaging and nuclear medicine, especially the rapid development of alpha nuclides (such as 223 Ra, 225 Ac, 211 At, etc.) in therapeutic radioimmunotherapy, higher requirements are put forward for the safety, convenience and pollution control ability of radioactive operation platforms during animal experiments. Traditional radioactive experiments mostly use fume hoods, shielding lead boxes or simple workbenches as operation platforms, but their designs are mostly for handling high-energy beta or gamma nuclides, and do not fully consider the unique physical and biological characteristics of alpha nuclides, resulting in the following structural and functional defects in specific applications:

[0003] 1) Insufficient structural closure, unable to effectively prevent pollution from escaping

[0004] Most traditional radioactive work platforms are of open or semi-open structures, lacking glove box-style sealed operation designs, and are extremely prone to sample splashing, aerosol or alpha particle escape in animal excrement during the operation of 223 Ra, 225 Ac, 211 At and other alpha nuclides. Although the penetration power of alpha particles is low (tens of micrometers), their biological toxicity is extremely strong. Once ingested through skin breakage or the respiratory tract, it can cause high-risk local dose radiation damage. Existing devices cannot effectively protect against such hazards structurally.

[0005] 2) Lack of targeted pollution collection and protection structures

[0006] During the metabolic process of alpha nuclides in animals, some nuclides are often excreted in the form of feces or urine, showing the characteristics of excretory radioactive pollution. Most existing work platforms do not set up special collection layers or isolation pads for excrement, resulting in the excrement produced by small animals during injection or imaging waiting directly contaminating the experimental trays and environmental surfaces, increasing both the risk of biological pollution and the difficulty of cleaning and subsequent treatment.

[0007] 3) Bulky and immovable, inconvenient for experimental deployment

[0008] Currently, the general radioactive operation equipment in laboratories (such as lead box fume hoods) is mostly large in volume, heavy in weight, and powered on, making it impossible to be flexibly deployed in restricted areas such as animal operation rooms and barrier animal rooms. Especially for experimental scenarios that require frequent movement to the radiation animal room for short-term injection or sampling operations, the existing equipment lacks portability design, seriously restricting the experimental efficiency.

[0009] Therefore, in summary, the existing working platforms for radioactive operations have obvious deficiencies in terms of structural airtightness, pollution collection, portability design, and filtration protection. Especially when facing alpha nuclide experimental operations, their safety and practicality cannot meet the actual needs of laboratory standardization and animal experiments. Summary of the Utility Model

[0010] In view of the deficiencies of the prior art, the present utility model provides a portable small protective workstation for alpha nuclide operations, which overcomes the deficiencies of the prior art, is reasonably designed, and realizes the organic unity of radiation protection, pollution control, and experimental convenience for operators.

[0011] To achieve the above objectives, the present utility model is realized through the following technical solutions:

[0012] A portable small protective workstation for alpha nuclide operations, including a protective cabin. Above the front side of the protective cabin, there is a transparent window. On the front side of the protective cabin, there are glove holes, and radiation-resistant operation gloves are hermetically embedded in the glove holes. On the side of the protective cabin, there is a tray entrance, and a drawer-type bracket is slidably connected to the tray entrance. The drawer-type bracket includes a tray layer, a cushion layer, and a cover plate. The tray layer and the cushion layer are both vertically fixedly connected to the side of the cover plate. The tray layer is located above the cushion layer. On the cushion layer, there is a highly absorbent radioactive water-absorbing pad fixedly installed. A number of through holes are opened on the bottom surface of the tray layer. The tray layer and the cushion layer are movably installed in the protective cabin through the tray entrance, and the cover plate is hermetically abutted against the outer side of the protective cabin; the glove holes are located above the tray layer.

[0013] Above the protective cabin, there is an air filtration box. The air filtration box is internally provided with a filtration layer, and an exhaust fan is fixedly installed in the inner cavity of the air filtration box.

[0014] Preferably, a cold light LED light strip is fixedly installed on the upper wall of the inner cavity of the protective cabin.

[0015] Preferably, first hooks are fixedly installed on the sides of the tray layer and the cushion layer, and second hooks are fixedly installed above and below the side of the cover plate. The tray layer and the cushion layer are respectively fixed and engaged with each other through the first hooks and the second hooks.

[0016] Preferably, universal wheels are installed at the bottom of the protective cabin.

[0017] Preferably, the control port of the exhaust fan is connected to the signal output end of the voltage transformer controller; the filter layer includes a primary HEPA filter layer and a secondary activated carbon layer, and the primary HEPA filter layer and the secondary activated carbon layer are stacked in sequence below the exhaust fan.

[0018] Preferably, a three-channel GM counter or a scintillation detector is installed inside the protective cabin.

[0019] Preferably, a radiation-proof gasket is provided on the inner side of the cover plate, and the cover plate is closely attached to the protective cabin through the radiation-proof gasket.

[0020] Preferably, upper and lower two-layer guide rails are respectively arranged on the front and rear side walls of the inner cavity of the protective cabin at the tray entrance, and the guide rails are respectively in sliding fit with the lower surfaces of the tray layer and the cushion layer.

[0021] Preferably, a radiation shielding layer is fixedly embedded on the inner wall of the protective cabin.

[0022] The utility model provides a portable small protective workstation for alpha nuclide operation, which has the following beneficial effects: by placing the nuclide or animal sample to be operated on the tray layer, and then pushing the whole drawer-type bracket into the protective cabin along the tray entrance; and then through the synergistic effect of the filter layer and the exhaust fan, a negative pressure environment inside the cabin is realized to effectively prevent the diffusion of radioactive substances. The operator can wear radiation-resistant operation gloves through the glove holes to conduct experiments in the sealed protective cabin, and observe the operation process through the transparent window. During the experimental operation, the excrement of small animals and the liquid leaked during the operation can flow downward through the through holes on the surface of the tray layer onto the highly absorbent radioactive water-absorbing pad on the cushion layer, so that the highly absorbent radioactive water-absorbing pad can effectively adsorb and isolate the waste liquid or excrement dripping during the operation, prevent the spread of pollution, and ensure the safety and cleanliness of the experimental environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the prior art.

[0024] Figure 1 Structural schematic diagram of the present utility model;

[0025] Figure 2 Cross-sectional structural schematic diagram of the protective cabin in the present utility model;

[0026] Explanation of the reference numerals in the drawings:

[0027] 1. Protective cabin; 2. Transparent viewing window; 3. Glove hole; 4. Radiation-resistant operating gloves; 5. Tray entrance; 6. Drawer-type bracket; 7. Air filtration box; 8. Cold light LED light strip; 9. First hook; 10. Second hook; 11. Exhaust fan; 12. Primary HEPA filter layer; 13. Secondary activated carbon layer; 14. Radiation-proof gasket; 15. Universal wheel; 16. Guide track; 61. Tray layer; 62. Cushion layer; 63. Cover plate; 64. Highly absorbent radioactive water-absorbing pad; 65. Through hole. Detailed implementation mode

[0028] To make the purpose, technical solutions and advantages of the present utility model clearer, the technical solutions in the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the present utility model.

[0029] Example 1, as Figure 1-2 shown, a portable small protective workstation for alpha nuclide operation includes a protective cabin 1. A transparent viewing window 2 is provided above the front side of the protective cabin 1. Among them, it is made of impact-resistant materials (such as thick polycarbonate or ABS alloy). The transparent viewing window 2 is preferably made of anti-fog polycarbonate (PC) board with a thickness of 5 mm to 8 mm, having high transparency and impact resistance; a glove hole 3 is provided on the front side of the protective cabin 1. A radiation-resistant operating glove 4 is hermetically embedded in the glove hole 3. The edge of the glove hole 3 is hermetically connected to the radiation-resistant operating glove 4 through a silicone sealing ring. The radiation-resistant operating glove 4 can be made of butyl rubber or neoprene. The length of the radiation-resistant operating glove 4 is adapted to the operation below the elbow to ensure operation flexibility; a tray entrance 5 is provided on the side of the protective cabin 1. A drawer-type bracket 6 is slidably connected to the tray entrance 5. The drawer-type bracket 6 includes a tray layer 61, a cushion layer 62 and a cover plate 63. The tray layer 61 and the cushion layer 62 are both vertically and fixedly connected to the side of the cover plate 63. The tray layer 61 is located above the cushion layer 62. A highly absorbent radioactive water-absorbing pad 64 is fixedly installed on the cushion layer 62. A number of through holes 65 are provided on the bottom surface of the tray layer 61. The tray layer 61 and the cushion layer 62 are movably installed in the protective cabin 1 through the tray entrance 5. The cover plate 63 is hermetically abutted against the outer side of the protective cabin 1; the glove hole 3 is located above the tray layer 61; among them, the tray layer 61 is made of 304 stainless steel plate with a thickness of 1.5 mm and a surface wire drawing treatment for easy cleaning and disinfection;

[0030] An air filtration box 7 is provided above the protective cabin 1. A filter layer is provided inside the air filtration box 7. The side of the filter layer is hermetically embedded on the inner cavity side wall of the air filtration box 7. A micro exhaust fan 11 is fixedly installed above the inner cavity of the air filtration box 7. The control port of the exhaust fan 11 is connected to the signal output end of the variable voltage controller.

[0031] Working principle:

[0032] In use, first place the nuclide or animal sample to be operated on the tray layer 61, then push the entire drawer-type bracket 6 into the protective cabin 1 along the tray entrance 5, and ensure that the cover plate 63 is in good seal with the protective cabin 1. Then, the exhaust fan 11 can be controlled to start, and the inside of the protective cabin 1 is evacuated through the exhaust fan 11, and the speed of the exhaust fan 11 is adjusted and controlled through the variable voltage controller, so that the inside of the protective cabin 1 maintains a slightly negative pressure state to prevent gas leakage. During the evacuation process, the air can be filtered through the filter layer inside the air filter box 7, and volatile radioactive gases such as radon can be adsorbed. Thus, through the synergistic effect of the filter layer and the exhaust fan 11, a negative pressure environment of -10 to -20 Pa can be achieved inside the cabin, effectively preventing the spread of radioactive substances.

[0033] After that, the operator can wear radiation-resistant operation gloves 4 through the glove holes 3 to perform experiments such as injection and sample separation inside the protective cabin 1, and observe the operation process through the transparent window 2 to ensure safety. During the experimental operation, the excreta of small animals (such as urine and feces) and the liquid leaked during the operation can flow downward through the through holes 65 on the surface of the tray layer 61 into the highly absorbent radioactive water-absorbing pad 64 on the cushion layer 62. Thus, the highly absorbent radioactive water-absorbing pad 64 can effectively adsorb and isolate the waste liquid or excreta dripping during the operation, prevent the spread of pollution, and ensure the safety and cleanliness of the experimental environment. In this embodiment, the highly absorbent radioactive water-absorbing pad 64 is made of a polyacrylate material containing an inorganic material adsorbent, has excellent adsorption performance, and can quickly lock radioactive substances to prevent their further spread (this is prior art, so it will not be elaborated further).

[0034] After the experiment is completed, the entire drawer-type bracket 6 can be pulled out from the tray entrance 5, and the highly absorbent radioactive water-absorbing pad 64 on the cushion layer 62 can be removed as a whole and professionally processed to avoid secondary pollution. Subsequently, the entire drawer-type bracket 6 is subjected to autoclave inactivation or solid waste transfer treatment, and the inside of the protective cabin 1 can be thoroughly cleaned with a radiation cleaning liquid to ensure no residual radiation. If it needs to be transferred to other places, only need to lock and encapsulate the drawer-type bracket 6 to ensure no leakage risk, and then it can be safely transported by professional personnel.

[0035] Embodiment 2, as a further preferred solution of Embodiment 1, a cold light LED strip 8 is fixedly embedded on the upper wall of the inner cavity of the protective cabin 1. Specifically, the cold light LED strip 8 can be distributed along the edge of the upper wall of the inner cavity of the protective cabin 1. By using a cold white LED light source (with a power within 2W), it is ensured to provide uniform illumination in a closed environment. And the cold light LED strip 8 has a soft light and no heat design, which is convenient for operation at night or under low light conditions.

[0036] Embodiment 3, as a further preferred solution of Embodiment 1, first hooks 9 are fixedly installed on the sides of the tray layer 61 and the cushion layer 62, and second hooks 10 are fixedly installed above and below the side of the cover plate 63. The tray layer 61 and the cushion layer 62 are respectively fixed and engaged with each other through the first hooks 9 and the second hooks 10. Through the mutual cooperation of the first hooks 9 and the second hooks 10, the tray layer 61 and the cushion layer 62 can be stably embedded in the cover plate 63, and the quick separation between the tray layer 61 and the cushion layer 62 and the cover plate 63 can also be realized. Thus, it is convenient to replace or soak the tray layer 61, the cushion layer 62 and the cover plate 63 without damage after the experiment, ensuring that each component independently and efficiently completes cleaning and disinfection.

[0037] Embodiment 4, as a further preferred solution of Embodiment 1, a support frame is fixedly installed at the bottom of the protective cabin body 1, and four universal wheels 15 with braking functions are installed at the bottom of the support frame. Thus, the transfer work and position adjustment of the entire protective cabin body 1 can be facilitated through the universal wheels 15. The braking function of the universal wheels 15 ensures the stable and reliable fixing of the protective cabin body 1 at a fixed position, preventing accidental movement, and further ensuring the safety and stability of the experimental process.

[0038] Embodiment 5, as a further preferred solution of Embodiment 1, the filter layer includes a primary HEPA filter layer 12 and a secondary activated carbon layer 13, and the primary HEPA filter layer 12 and the secondary activated carbon layer 13 are sequentially stacked below the exhaust fan 11. Through the primary HEPA filter layer 12, particles and aerosols with a size of ≥99.97% can be effectively filtered, and through the secondary activated carbon layer 13, volatile radioactive gases can be adsorbed.

[0039] Embodiment 6, as a further preferred solution of Embodiment 1, a three-channel GM counter or a scintillation detector is installed on the inner wall of the top of the protective cabin body 1. By installing a three-channel GM counter or a scintillation detector in the protective cabin body 1, the radiation level in the protective cabin body 1 can be monitored in real time through the three-channel GM counter or the scintillation detector, ensuring the safety and controllability of the experimental environment. The data of the three-channel GM counter or the scintillation detector can be wirelessly transmitted to the control center, facilitating remote monitoring and analysis, and further improving the accuracy and efficiency of the protection measures. Specifically, in this embodiment, a scintillation detector can be used, and a controller and a display screen are arranged outside the protective cabin body 1. Thus, the ray energy or type can be accurately analyzed through the scintillation detector, and the signal is transmitted to the controller, analyzed and processed by the controller, and the radiation intensity and distribution are displayed in real time through the control display screen, facilitating the experimenters to adjust the operation strategy in time to ensure the safe progress of the experiment.

[0040] In the present utility model, a detachable lithium battery pack can be added to the protective cabin 1. The three-channel GM counter, scintillation detector, cold light LED strip 8, exhaust fan 11, and voltage transformation controller are all powered by the lithium battery pack, enabling devices such as the three-channel GM counter, scintillation detector, cold light LED strip 8, exhaust fan 11, and voltage transformation controller to still operate normally without an external power supply, ensuring that the experiment is not interrupted and enhancing the emergency handling ability. Moreover, the detachable lithium battery pack supports fast charging with an external AC power supply. And all electrical components have radiation hardening treatment.

[0041] Embodiment Seven, as a further preferred solution of Embodiment One, an anti-radiation gasket 14 is provided on the inner side surface of the cover plate 63, and the cover plate 63 is closely attached to the protective cabin 1 through the anti-radiation gasket 14. The anti-radiation gasket 14 can specifically be made of high-density lead material to effectively shield radiation.

[0042] Embodiment Eight, as a further preferred solution of Embodiment One, upper and lower two-layer guiding rails 16 are respectively arranged on the front and rear side walls of the inner cavity of the protective cabin 1 at the tray inlet 5, and the guiding rails 16 are respectively in sliding fit with the lower surfaces of the tray layer 61 and the cushion layer 62. By providing the guiding rails 16, when the drawer-type bracket 6 is pushed into the protective cabin 1 along the tray inlet 5, the supporting effect on the tray layer 61 and the cushion layer 62 can be achieved through the guiding rails 16 to ensure stability during subsequent experiments. Additionally, in this embodiment, the guiding rails 16 can be set as a guiding inclined surface structure near the tray inlet 5 to facilitate the smooth sliding-in of the drawer-type bracket 6.

[0043] Embodiment Nine, as a further preferred solution of Embodiment One, a radiation shielding layer with a thickness of 2 - 3 mm is fixedly embedded on the inner wall of the protective cabin 1. Specifically, the radiation shielding layer is a high-purity lead plate or tungsten alloy plate structure, so that the radiation protection performance of the protective cabin 1 can be effectively ensured through the radiation shielding layer.

[0044] The above embodiments are only used to illustrate the technical solutions of the present utility model and are not intended to limit it; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the various embodiments of the present utility model.

Claims

1. A portable small protective workstation for alpha nuclide operation, characterized in that: It includes a protective cabin body (1), above the front side of the protective cabin body (1) there is a transparent viewing window (2), on the front side of the protective cabin body (1) there are glove holes (3), inside the glove holes (3) there are radiation-resistant operating gloves (4) hermetically embedded, on the side of the protective cabin body (1) there is a tray entrance (5), the tray entrance (5) is slidably connected with a drawer-type bracket (6), the drawer-type bracket (6) includes a tray layer (61), a cushion layer (62) and a cover plate (63), the tray layer (61) and the cushion layer (62) are both vertically fixedly connected to the side of the cover plate (63), the tray layer (61) is located above the cushion layer (62), on the cushion layer (62) there is a highly absorbent radioactive water-absorbing pad (64) fixedly installed, on the bottom surface of the tray layer (61) there are a number of through holes (65), the tray layer (61) and the cushion layer (62) are movably installed in the protective cabin body (1) through the tray entrance (5), the cover plate (63) is hermetically abutted against the outer side of the protective cabin body (1); the glove holes (3) are located above the tray layer (61); Above the protective cabin body (1) there is an air filtration box (7), inside the air filtration box (7) there is a filtration layer, and inside the air filtration box (7) there is an exhaust fan (11) fixedly installed.

2. The portable small protection workstation for alpha nuclide operation according to claim 1, wherein: On the upper inner wall of the protective cabin body (1) there is a cold light LED light strip (8) fixedly installed.

3. A portable small protective workstation for alpha nuclide operation according to claim 1, characterized in that: On the sides of both the tray layer (61) and the cushion layer (62) there are first hooks (9) fixedly installed, above and below the side of the cover plate (63) there are second hooks (10) fixedly installed, and the tray layer (61) and the cushion layer (62) are respectively fixed and engaged with each other through the first hooks (9) and the second hooks (10).

4. A portable small protective workstation for alpha nuclide operation according to claim 1, characterized in that: At the bottom of the protective cabin body (1) there are universal wheels (15) installed.

5. A portable small protective workstation for alpha nuclide operation according to claim 1, characterized in that: The control port of the exhaust fan (11) is connected to the signal output end of the voltage transformer controller; the filtration layer includes a primary HEPA filtration layer (12) and a secondary activated carbon layer (13), and the primary HEPA filtration layer (12) and the secondary activated carbon layer (13) are sequentially stacked and arranged below the exhaust fan (11).

6. A portable small protective workstation for alpha nuclide operation according to claim 1, characterized in that: Inside the protective cabin body (1) there is a three-channel GM counter or a scintillation detector installed.

7. A portable small protective workstation for alpha nuclide operation according to claim 1, characterized in that: On the inner side of the cover plate (63) there is a radiation protection gasket (14), and the cover plate (63) is closely attached to the protective cabin body (1) through the radiation protection gasket (14).

8. A portable small protective workstation for alpha nuclide operation according to claim 1, characterized in that: On the front and rear side walls of the inner cavity of the protective cabin body (1) at the tray entrance (5) there are respectively two upper and lower guiding rails (16) provided, and the guiding rails (16) are respectively in sliding fit with the lower surfaces of the tray layer (61) and the cushion layer (62).

9. A portable small protective workstation for alpha nuclide operation according to claim 1, characterized in that: On the inner wall of the protective cabin body (1) there is a radiation shielding layer fixedly embedded.

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