Rapid cooling device for thermoluminescence detector

Abstract

The utility model discloses a rapid cooling device for a thermoluminescence detector, which is suspended in a closed low-temperature refrigeration environment for auxiliary use, and is characterized by comprising a heating disc for placing the detector; the top of a box body of the cooling box is used as a cooling platform for placing the heating disc; the fan is installed in the cooling box and blows air to the heating disc for heat dissipation; and the flow guide assembly is arranged between the fan and the cooling platform. According to the utility model, firstly, cold air sucked by the fan is intensively blown to the area where the convection holes are located under the flow guide action of the flow guide ring, so that the cold air is prevented from flowing to other areas, the cooling effect of the air blown by the fan on the detector on the heating disc is improved, and the cooling efficiency is improved; the guided cold air is prevented from being intensively blown on the thermoluminescence detector, the thermoluminescence detector can be uniformly cooled after shunting, the cooling rate is similar, and the problem of large sensitivity change caused by overlarge cooling rate difference is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of supporting equipment of a thermoluminescence dose measurement system, in particular to a rapid cooling device for a thermoluminescence detector. Background Art

[0002] During the measurement of thermoluminescent radiation dose, the thermoluminescent detector needs to be annealed at high temperature in order to remove the residual dose in the detector and restore the sensitivity, precision and dispersion of the thermoluminescent detector. Among them, the cooling of the thermoluminescent detector after annealing is an important part of the annealing operation. Its cooling rate and cooling consistency will have a great impact on the sensitivity of the detector, the shape of the luminescence curve, the consistency of the detector and its reuse. In order to reduce the error of thermoluminescence measurement, the method of rapid cooling after high temperature annealing should be adopted, and the cooling method should be adjustable and controllable.

[0003] The existing Chinese utility model patent "Thermoluminescent automatic rapid annealing cooling device" with application number 201620561691.7 discloses that "the thermoluminescent automatic rapid annealing cooling device includes: a cooling copper plate 1, a fan 2, a metal frame 3, and a mercury thermometer 4, wherein the cooling bottom plate is a copper metal plate 1 with a thickness of at least 5 mm, and the center of the copper metal plate is placed with a thermoluminescent detector annealing disk, and a position mark 10 is designed. The cooling copper plate 1 is located at the bottom of the metal frame 3... The fan 2 is fixed on the top frame." The cooling device is placed in the refrigerator, integrating comprehensive heat dissipation methods such as metal plate contact refrigeration, full space environment low temperature refrigeration, and fan rapid cold air refrigeration to achieve the purpose of rapid cooling of the thermoluminescent detector. However, in the cooling device, the fan is set at the top of the metal frame and the annealing disk is placed at the bottom of the metal frame. The direction of the cold air blown by the fan is not concentrated, and the airflow flows in the refrigerator, which affects the air cooling effect and reduces the cooling efficiency of the thermoluminescent detector. Utility Model Content

[0004] The purpose of the utility model is to solve the technical problems mentioned in the above background technology and to provide a rapid cooling device for a thermoluminescence detector.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A rapid cooling device for a thermoluminescent detector is suspended in a closed low-temperature refrigeration environment for auxiliary use, and is characterized by comprising:

[0007] A heating plate for placing the detector;

[0008] The cooling box is made of metal, and the top of the box is used as a cooling platform for placing the heating plate;

[0009] The fan is installed in the cooling box to blow air to the heating plate to dissipate heat;

[0010] The air guide component is arranged between the fan and the cooling platform to concentrate the air blown by the fan to the cooling platform.

[0011] As a further description of the above technical solution:

[0012] The cooling platform is provided with a plurality of convection holes, and the coverage area of ​​the convection holes on the cooling platform is larger than the contact area between the heating plate and the cooling platform.

[0013] As a further description of the above technical solution:

[0014] The guide assembly is a guide ring adapted to the fan, the guide ring is fixed to the top wall of the cooling box, and the inner diameter of the guide ring is larger than the coverage area of ​​the convection holes on the cooling platform.

[0015] As a further description of the above technical solution:

[0016] A power socket, a fuse and a switch are installed on the outside of the cooling box. The power socket is electrically connected to the fuse, the fuse is electrically connected to the switch, and the switch is electrically connected to the fan.

[0017] As a further description of the above technical solution:

[0018] The bottom of the cooling box is fixedly connected with a bottom plate, the fan is fixed on the bottom plate, and a through hole is opened on the bottom plate.

[0019] As a further description of the above technical solution:

[0020] A through groove is provided at the bottom of the cooling box.

[0021] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0022] 1. In the utility model, the guide ring concentrates the wind blown out by the fan to the cooling platform, and the cold air sucked in by the fan is concentrated to the area where the convection holes are located under the guiding effect of the guide ring, avoiding the cold air from flowing to other areas, improving the cooling effect of the fan on the detector on the heating plate, and improving the cooling efficiency.

[0023] 2. In the utility model, the convection holes divert the cold air blown out by the fan to avoid the guided cold air from being concentrated on the thermoluminescent detector. After diversion, the thermoluminescent detector can be cooled evenly with similar cooling rates, thus avoiding the problem of large sensitivity changes caused by excessive differences in cooling rates. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1An explosion schematic diagram of a thermoluminescence detector rapid cooling device provided according to an embodiment of the utility model is shown;

[0025] Figure 2 A schematic diagram of the three-dimensional structure of a rapid cooling device for a thermoluminescent detector provided according to an embodiment of the utility model is shown;

[0026] Figure 3 A cross-sectional schematic diagram of a thermoluminescence detector rapid cooling device provided according to an embodiment of the utility model is shown;

[0027] Figure 4 A partial bottom view schematic diagram of a thermoluminescent detector rapid cooling device provided according to an embodiment of the utility model is shown.

[0028] Legend:

[0029] 1. Heating plate; 2. Cooling box; 201. Convection hole; 202. Through slot; 3. Power socket; 4. Fuse; 5. Guide ring; 6. Fan; 7. Bottom plate; 701. Through hole; 8. Switch. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] See also Figure 1-4 The utility model provides a technical solution: a thermoluminescent detector rapid cooling device, which is suspended and placed in a closed low-temperature refrigeration environment for auxiliary use, such as setting a bracket in a refrigerator and placing a cooling box on the bracket, including:

[0032] like Figure 1 The heating plate 1 shown is used to place the detector;

[0033] like Figure 1 and Figure 4The cooling box 2 shown is made of metal, and the top of the box is used as a cooling platform for placing the heating plate 1. The heating plate 1 is in contact with the metal to cool down. A number of convection holes 201 are provided on the cooling platform. The coverage area of ​​the convection holes 201 on the cooling platform is larger than the contact area between the heating plate 1 and the cooling platform. The cold air blown out by the fan 6 is diverted to avoid the cold air passing through the guide being concentrated on the thermoluminescent detector. After diversion, the thermoluminescent detector can be cooled evenly with similar cooling rates, avoiding the problem of large sensitivity changes caused by excessive cooling rate differences, ensuring the sensitivity and repeatability of the detector, and reducing the error in the measurement of thermoluminescent radiation dose. A through slot 202 is provided at the bottom of the cooling box 2 to facilitate the disassembly and assembly of the guide ring 5 and the fan 6.

[0034] like Figure 1 The fan 6 shown is fixedly connected to a bottom plate 7 at the bottom of the cooling box 2, and the fan 6 is fixed on the bottom plate 7. A through hole 701 is provided on the bottom plate 7 to blow air to the heating plate 1 to dissipate heat. When the fan 6 is started, cold air is sucked in from the through hole 701. Furthermore, a fan 6 with adjustable wind speed can be selected to meet the cooling requirements of different thermoluminescent detectors;

[0035] like Figure 1 and Figure 4 The guide ring 5 adapted to the fan 6 is shown, and is arranged between the fan 6 and the cooling platform. The guide ring 5 is fixed on the top wall of the cooling box 2. The inner diameter of the guide ring 5 is larger than the coverage area of ​​the convection hole 201 on the cooling platform, and the wind blown out by the fan 6 is concentrated to the cooling platform. The cold wind sucked by the fan 6 is concentrated to the area where the convection hole 201 is located under the guiding effect of the guide ring 5, so as to prevent the cold wind from flowing to other areas, thereby improving the cooling effect of the fan blowing on the detector on the heating plate 1 and improving the cooling efficiency;

[0036] like Figure 1 and Figure 2 As shown, a power socket 3, a fuse 4 and a switch 8 are installed on the outside of the cooling box 2. The power socket 3 is electrically connected to the fuse 4, the fuse 4 is electrically connected to the switch 8, and the switch 8 is electrically connected to the fan 6. The electrical connection is achieved through cables. After the power socket 3 is energized, the switch 8 is turned on to supply power to the fan 6, and the fan 6 is started. The fuse 4 is disconnected when the cable is overcurrent to avoid burning the fan 6.

[0037] In this embodiment, the cooling device has a simple structure, low cost, high cooling efficiency, is suitable for cooling conditions of different thermoluminescence detectors, and plays an important role in strengthening the quality control of the thermoluminescence measurement system.

[0038] Working principle: When in use, when the fan 6 is started, cold air is sucked in from the through hole 701. First, the cold air sucked in by the fan 6 is concentratedly blown to the area where the convection hole 201 is located under the guidance of the guide ring 5, so as to prevent the cold air from flowing to other areas, thereby improving the cooling effect of the fan on the detector on the heating plate 1 and improving the cooling efficiency. Secondly, the convection hole 201 diverts the cold air blown from the guide ring 5 to prevent the guided cold air from being concentrated on the thermoluminescent detector. After diversion, the thermoluminescent detector can be evenly cooled with a similar cooling rate, thereby avoiding the problem of large sensitivity changes caused by excessive cooling rate differences, ensuring the sensitivity and repeatability of the detector, and reducing the error in the measurement of thermoluminescent radiation dose.

[0039] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A rapid cooling device for a thermoluminescent detector, which is suspended in a closed low-temperature refrigeration environment for auxiliary use, characterized in that: include: A heating plate (1) for placing the detector; A cooling box (2) is made of metal, and the top of the box is used as a cooling platform for placing the heating plate (1); A fan (6) is installed in the cooling box (2) to blow air to the heating plate (1) to dissipate heat; The air guide component is arranged between the fan (6) and the cooling platform, and concentrates the air blown out by the fan (6) toward the cooling platform.

2. A thermoluminescence detector rapid cooling device according to claim 1, characterized in that: A plurality of convection holes (201) are provided on the cooling platform, and the coverage area of ​​the convection holes (201) on the cooling platform is larger than the contact area between the heating plate (1) and the cooling platform.

3. The rapid cooling device for a thermoluminescent detector according to claim 1, characterized in that: The flow guide component is a flow guide ring (5) adapted to the fan (6); the flow guide ring (5) is fixed to the top wall of the cooling box (2); the inner diameter of the flow guide ring (5) is larger than the coverage area of ​​the convection holes (201) on the cooling platform.

4. The rapid cooling device for a thermoluminescent detector according to claim 1, characterized in that: A power socket (3), a fuse (4) and a switch (8) are installed on the outside of the cooling box (2); the power socket (3) is electrically connected to the fuse (4), the fuse (4) is electrically connected to the switch (8), and the switch (8) is electrically connected to the fan (6).

5. The rapid cooling device for a thermoluminescent detector according to claim 1, characterized in that: The bottom of the cooling box (2) is fixedly connected to a bottom plate (7), the fan (6) is fixed on the bottom plate (7), and a through hole (701) is provided on the bottom plate (7).

6. The rapid cooling device for a thermoluminescent detector according to claim 1, characterized in that: The bottom of the cooling box (2) is provided with a through groove (202).

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