Gamma spectrometer shielding device

Abstract

The present invention discloses a gamma spectrometer shielding device, which relates to the field of nuclear physics detection technology, and its main purpose is to provide a gamma spectrometer shielding device that can replace the radioactive source without opening the cover. The main technical scheme of the present invention is: a gamma spectrometer shielding device, comprising: a shell, the shell has a first cavity for placing the detector; a cover, the cover is rotatably connected to the shell, the cover has a first hole slot and a second hole slot, the first hole slot passes through the cover horizontally, the second hole slot is arranged in the middle of the cover, one end of the second hole slot is interconnected with the first cavity, and the other end is interconnected with the first hole slot; a sliding component, the middle part of the sliding component has a plurality of placement holes slots, each placement hole slot has a placement table for placing the radioactive source, and the sliding component can be inserted into the first hole slot. The present invention is mainly used to detect the radioactivity of the sample to be tested.

Description

Technical Field

[0001] The invention relates to the technical field of nuclear physics detection, in particular to a gamma spectrometer shielding device. Background Art

[0002] In the field of nuclear technology, gamma spectrum measurement is a set of methods that use a gamma spectrometer to measure the gamma rays of a certain energy of radioactive elements in rocks or strata and other media, thereby determining the content of radioactive elements. The transmission experiment mainly determines the attenuation ability of the unknown sample to gamma rays of different energies by measuring the degree of attenuation of the gamma rays emitted by the external radioactive source, so as to understand the attenuation ability of the sample to the gamma rays emitted by the nuclides contained in it, and further correct for the self-absorption of the body source sample. The existing gamma spectrometer usually includes a lead chamber made of lead material, in which a detector is placed, and then the sample to be tested is placed on the detector for measurement. When conducting a transmission experiment, since some point sources with high activity or emitting multiple gamma rays cannot be too close to the detector, the radiation source cannot directly contact the sample to be tested. Therefore, a bracket-type collimator is usually set on the upper part of the detector, and the radiation source is placed in the lead collimator so that the radiation generated by the radiation source irradiates the sample to be tested, and the detector detects the sample to be tested.

[0003] The existing gamma spectrometer is provided with a hole slot on the cover body, the hole slot passes through the shielding cover body, the hole slot is located at the upper part of the end face, the hole slot includes a penetration hole and a placement hole, the penetration hole is arranged at one end close to the detector, the closing plug is detachably arranged in the hole slot, the placement hole is arranged at the upper part of the penetration hole, and there is a placement table between the placement hole and the penetration hole, the radiation source can be placed on the placement table, so that the radiation generated by the radiation source can be irradiated on the sample to be tested through the penetration hole, and then the placement hole is closed by the closing plug, so as to achieve the technical effect of facilitating the detection of the sample to be tested. However, during use, the radiation released by each radiation source The rays are different, therefore, it is necessary to replace different radiation sources for detection. When replacing the radiation source, it is necessary to open the closed plug first, and then take out the radiation source. At this time, the detector and the sample under test will be exposed to the air. On the one hand, the bracket and the external environment will affect the detection results of the detector, resulting in inaccurate data detected by the detector. On the other hand, it will cause the detection personnel to be exposed to a large amount of radiation, causing radiation damage to the detection personnel. If the detector is turned off, the detection personnel can be prevented from being exposed to radiation, but the detection time will be increased, thereby reducing work efficiency. Summary of the invention

[0004] In view of this, an embodiment of the present invention provides a gamma spectrometer shielding device, the main purpose of which is to provide a gamma spectrometer shielding device capable of replacing a radiation source without opening a cover.

[0005] In order to achieve the above object, the present invention mainly provides the following technical solutions:

[0006] An embodiment of the present invention provides a gamma spectrometer shielding device, the device comprising:

[0007] A housing, wherein the housing has a first cavity for accommodating the detector;

[0008] A cover body, the cover body is rotatably connected to the shell, the cover body has a first hole slot and a second hole slot, the first hole slot transversely passes through the cover body, the second hole slot is arranged in the middle of the cover body, one end of the second hole slot is interconnected with the first cavity, and the other end of the second hole slot is interconnected with the first hole slot;

[0009] A sliding component has a plurality of placement holes in the middle thereof, each of the placement holes has a placement platform for placing the radiation source, and the sliding component can be inserted into the first holes.

[0010] Furthermore, one side of the sliding component has a marking scale for marking the position of the placement hole slot at the second hole slot.

[0011] Furthermore, the marking scale has multiple groups of marking components, each group of marking components includes two identification scales, and the two identification scales are respectively arranged on both sides of one of the placement holes.

[0012] Furthermore, the plurality of placement hole slots include adjacent first placement slots and second placement slots, and two adjacent marking components include a first identification scale, a second identification scale, a third identification scale and a fourth identification scale, the first placement slot is arranged on the left side of the second placement slot, the first identification scale is arranged on the left side of the first placement slot, the second identification scale is arranged on the right side of the second placement slot, the third identification scale is arranged between the first placement slot and the first identification scale, and the fourth identification scale is arranged on the right side of the second identification scale.

[0013] Furthermore, the placement platform has a plurality of steps, the plurality of steps are arranged in sequence from top to bottom, and the diameters of the plurality of steps decrease in sequence.

[0014] Furthermore, the side wall of the sliding component and the side wall of the first hole groove are in contact with each other.

[0015] Furthermore, a rotating shaft, one end of which is fixedly connected to the shell, and the other end of which is rotatably connected to the cover.

[0016] Furthermore, a limiting component is detachably connected to the side surfaces at both ends of the sliding component.

[0017] Furthermore, the limiting component includes a first limiting ring and a second limiting ring, the first limiting ring is sleeved on one end side of the sliding component, and the second limiting ring is sleeved on the other end side of the sliding component.

[0018] Furthermore, the sliding component is made of lead material.

[0019] Compared with the prior art, the present invention has the following technical effects:

[0020] In the technical solution provided by the embodiment of the present invention, the function of the shell is to shield radiation, and the shell has a first cavity for placing the detector; the function of the cover body is to cover the opening on the upper part of the shell, and the cover body is rotatably connected to the shell, and the cover body has a first hole groove and a second hole groove, the first hole groove horizontally penetrates the cover body, and the second hole groove is arranged in the middle position of the cover body, one end of the second hole groove is interconnected with the first cavity, and the other end is interconnected with the first hole groove; the function of the sliding component is to place the radiation source, and the middle part of the sliding component has a plurality of placement holes grooves, each placement hole groove has a placement platform for placing the radiation source, and the sliding component can be inserted into the first hole groove. Compared with the prior art, A hole slot is provided, the hole slot passes through the shielding cover body, the hole slot is located at the upper part of the end face, the hole slot includes a penetration hole and a placement hole, the penetration hole is provided at one end close to the detector, the closing plug is detachably provided in the hole slot, the placement hole is provided at the upper part of the penetration hole, a placement table is provided between the placement hole and the penetration hole, the radiation source can be placed on the placement table, so that the radiation generated by the radiation source can be irradiated on the sample to be tested through the penetration hole, and then the placement hole is closed by the closing plug, so as to achieve the technical effect of facilitating the detection of the sample to be tested. However, during use, the radiation released by each radiation source is different. Therefore, it is necessary to replace different radiation sources for detection. When replacing the radiation source, In the operation of the radiation source, it is necessary to open the closed plug first, and then take out the radiation source. At this time, the detector and the sample to be tested will be exposed to the air. On the one hand, the bracket and the external environment will affect the detection result of the detector, resulting in inaccurate data detected by the detector. On the other hand, it will cause the detection personnel to be exposed to a large amount of radiation, thereby causing radiation damage to the detection personnel. If the detector is closed, the detection personnel can be prevented from being exposed to radiation, but the detection time will be increased, thereby reducing work efficiency. In this technical solution, a first hole groove and a second hole groove are arranged on the cover body, the first hole groove passes through the cover body horizontally, and the second hole groove is arranged on the cover body. The middle position of the body, one end of the second hole slot is interconnected with the first cavity, and the other end is interconnected with the first hole slot, and then a plurality of placement hole slots are arranged on the sliding component, a placement table is arranged in each placement hole slot, different radiation sources are placed on different placement tables, and then the sliding component is inserted into the first hole slot, and by moving the sliding component, different radiation sources pass through the second hole slots and are shot at the sample to be tested, thereby achieving a technical effect of facilitating the detection of the sample to be tested, and in the process of replacing the radiation source, there is no need to stop the detector or open the cover body to complete the detection operation, thereby improving the work efficiency of the detection and at the same time improving the accuracy of the detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic structural diagram of a gamma spectrometer shielding device provided by an embodiment of the present invention;

[0022] Figure 2A schematic structural diagram of a sliding component provided by an embodiment of the present invention;

[0023] Figure 3 A schematic cross-sectional structure diagram of a sliding component provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0024] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0025] like Figures 1 to 3 As shown, an embodiment of the present invention provides a gamma spectrometer shielding device, the device comprising:

[0026] The housing 1 has a first cavity 11 for accommodating the detector 9;

[0027] The cover body 2 is rotatably connected to the housing 1, and has a first hole slot 21 and a second hole slot 22. The first hole slot 21 passes through the cover body 2 transversely, and the second hole slot 22 is arranged in the middle of the cover body 2. One end of the second hole slot 22 is interconnected with the first cavity 11, and the other end is interconnected with the first hole slot 21;

[0028] The sliding component 3 has a plurality of placement holes 31 in the middle thereof. Each placement hole 31 has a placement platform 33 for placing the radiation source 7 . The sliding component 3 can be inserted into the first hole 21 .

[0029] In the technical solution provided by the embodiment of the present invention, the function of the shell 1 is to shield radiation, and the shell 1 has a first cavity 11 for placing the detector 9; the function of the cover 2 is to cover the opening at the top of the shell 1, and the cover 2 is rotatably connected to the shell 1, and the cover 2 has a first hole 21 and a second hole 22, the first hole 21 passes through the cover 2 horizontally, and the second hole 22 is arranged in the middle position of the cover 2, one end of the second hole 22 is interconnected with the first cavity 11, and the other end is interconnected with the first hole 21; the function of the sliding component 3 is to place the radiation source 7, and the middle part of the sliding component 3 has a plurality of placement holes 31, each placement hole 31 has a placement table 33 for placing the radiation source 7, and the sliding component 3 can be inserted into the first hole Slot 21, relative to the prior art, a hole slot is set on the cover body 2, the hole slot passes through the shielding cover body 2, the hole slot is located at the upper part of the end face, the hole slot includes a penetration hole and a placement hole, the penetration hole is set at one end close to the detector 9, the closing plug is detachably set in the hole slot, the placement hole is set at the upper part of the penetration hole, and there is a placement table between the placement hole and the penetration hole, the radiation source 7 can be placed on the placement table, so that the radiation generated by the radiation source 7 can be irradiated on the sample 8 to be tested through the penetration hole, and then the placement hole is closed by the closing plug, so as to achieve the technical effect of facilitating the detection of the sample 8 to be tested. However, during use, the rays released by each radiation source 7 are different. Therefore, it is necessary to replace different radiation sources 7 for detection. When replacing In the operation of the radiation source 7, it is necessary to open the closed plug first, and then take out the radiation source 7. At this time, the detector 9 and the sample to be tested will be exposed to the air. On the one hand, the bracket and the external environment will affect the detection result of the detector 9, thereby causing inaccurate data detected by the detector 9. On the other hand, it will cause the detection personnel to be exposed to a large amount of radiation, thereby causing radiation damage to the detection personnel. If the detector 9 is closed, the detection personnel can be prevented from being exposed to radiation, but the detection time will be increased, thereby reducing work efficiency. In the technical solution, a first hole groove 21 and a second hole groove 22 are arranged on the cover body 2. The first hole groove 21 passes through the cover body 2 horizontally, and the second hole groove 22 is arranged in the middle position of the cover body 2. One end of the second hole slot 22 is interconnected with the first cavity 11, and the other end is interconnected with the first hole slot 21, and then a plurality of placement hole slots 31 are arranged on the sliding component 3, and a placement table 33 is arranged in each placement hole slot 31, and different radiation sources 7 are placed on different placement tables 33, and then the sliding component 3 is inserted into the first hole slot 21, and by moving the sliding component 3, different radiation sources 7 pass through the second hole slot 22 and are shot onto the sample 8 to be tested, thereby achieving a technical effect of facilitating the detection of the sample 8 to be tested, and in the process of replacing the radiation source 7, there is no need to stop the detector 9, and there is no need to open the cover body 2 to complete the detection operation, thereby improving the work efficiency of the detection and at the same time improving the accuracy of the detection.

[0030] The shell 1 is used to shield radiation. The shell 1 has a first cavity 11 for placing the detector 9. The shell 1 is usually made of lead material and has a good shielding effect of gamma rays or other radiation. The shell 1 usually adopts a cylindrical structure. The middle part of the shell 1 has a first cavity 11. The upper part of the first cavity 11 is a hollow structure. The detector 9 is arranged in the first cavity 11. The function of the detector 9 is to detect the sample 8. The detector 9 is arranged in the first cavity 11. One end of the detector 9 is electrically connected to the signal processing device. The sample 8 to be tested will be placed on the detector 9. The structure of the detector 9 does not belong to the invention content of the embodiment of the present invention. Therefore, the detector 9 only needs to be able to detect the sample 8 to be tested, and is not limited here. The function of the cover body 2 is to cover the opening on the upper part of the shell 1. The cover body 2 is rotatably connected to the shell 1. The cover body 2 has a first hole groove 21 and a second hole groove 22. The first hole groove 21 passes through the cover body 2 horizontally, and the second hole groove 22 is arranged in the middle position of the cover body 2. One end of the second hole groove 22 is interconnected with the first cavity 11, and the other end is interconnected with the first hole groove 21.The function of the sliding component 3 is to place the radiation source 7. The middle part of the sliding component 3 has a plurality of placement holes 31, each placement hole 31 has a placement platform 33 for placing the radiation source 7. The sliding component 3 can be inserted into the first hole 21. The cover body 2 is also made of lead material. The first hole 21 is horizontally arranged or transversely arranged, or in other words, the first hole 21 is arranged along the radial direction of the cover body 2. The first hole 21 usually adopts a rectangular parallelepiped structure, and can also adopt a cylindrical structure. The first hole 21 usually passes through the axis of the cover body 2, and the second hole The axis of the second hole 22 coincides with the axis of the cover body 2, one end of the second hole 22 is connected to the first cavity 11, and the other end is connected to the first hole 21, that is, the second hole 22 connects the first hole 21 and the first cavity 11, the sliding component 3 is also made of lead material, and the shape of the sliding component 3 is the same as that of the first hole 21. In order to improve safety, the outer wall of the sliding component 3 needs to fit with the inner wall of the first hole 21, and the sliding component 3 can slide in the first hole 21. A plurality of placement slots 31 are arranged on the upper side and the lower side of the sliding part 3, and a placement table 33 is arranged in each placement slot 31 for placing the radiation source 7. It should be noted that the radiation source 7 is usually a point source, which is composed of a source holder and a film, and the film is arranged in the source holder, and the film is coated with radioactive material. When detection is required, different radiation sources 7 are placed in each placement table 33 respectively, and then the sample 8 to be tested is placed on the detector 9, and the cover 2 is closed. When the radiation source 7 in one of the placement tables 33 is needed, the sliding part 3 is pulled or pushed so that one of the placement slots 31 corresponds to the second slot 22, and the radiation released by the radiation source 7 can be irradiated on the sample 8 to be tested through the second slot 22, so that the detector 9 can detect the sample 8 to be tested, thereby achieving the technical effect of facilitating the detection of the sample 8 to be tested, and in the process of replacing the radiation source 7, the detector 9 does not need to be stopped, and the cover 2 does not need to be opened to complete the detection operation, which improves the working efficiency of the detection and improves the accuracy of the detection. ;

[0031] Furthermore, one side of the sliding component 3 has a marking scale 32 for marking the position of the placement hole slot 31 in the second hole slot 22. In this embodiment, the sliding component 3 is further defined, and a marking scale 32 is set on the upper side of the sliding component 3. The function of the marking scale 32 is to mark the position of the placement hole slot 31. Since the placement hole slot 31 is located inside the first hole slot 21, the position of the placement hole slot 31 cannot be seen, and it is impossible to correspond the placement hole slot 31 to the second hole slot 22. Therefore, the marking scale 32 is set on the upper side of the sliding component 3. When the axis of one of the placement hole slots 31 coincides with the axis of the second hole slot 22, a marking scale 32 is set on the exposed position of the sliding component 3. Mark, then move the sliding component 3, when the axis of the adjacent placement hole slot 31 coincides with the axis of the second hole slot 22, set a second mark at the exposed position of the sliding component 3, and so on to form a marking scale 32; optionally, the marking scale 32 has multiple groups of marking components, each group of marking components includes two identification scales, and the two identification scales are respectively arranged on both sides of one of the placement hole slots 31, and each placement hole slot 31 corresponds to a group of identification scales. When the axis of one of the placement hole slots 31 coincides with the axis of the second hole slot 22, the sliding component The two ends of 3 are respectively exposed to the outside of the cover body 2, and then an identification scale is set at the two exposed sides of the sliding part 3. When the identification scales at the two sides of the sliding part 3 coincide with the edges of the cover body 2 at the same time, the axis of one of the placement slots 31 coincides with the axis of the second slot 22, thereby achieving the technical effect of marking the position of the placement slot 31 at the second slot 22; further, the plurality of placement slots 31 include adjacent first placement slots 311 and second placement slots 312, and the adjacent two marking parts include the first identification scale 32 1. The second identification scale 322, the third identification scale 323 and the fourth identification scale 324, the first placement groove 311 is arranged on the left side of the second placement groove 312, the first identification scale 321 is arranged on the left side of the first placement groove 311, the second identification scale 322 is arranged on the right side of the second placement groove 312, the third identification scale 323 is arranged between the first placement groove 311 and the first identification scale 321, and the fourth identification scale 324 is arranged on the right side of the second identification scale 322, so as to further achieve the technical effect of determining the position of the placement hole groove 31.

[0032] Further, the placement platform 33 has a plurality of steps, the plurality of steps are arranged in sequence from top to bottom, and the diameters of the plurality of steps decrease in sequence. In this embodiment, the placement platform 33 is further defined, and each placement platform 33 is configured to have a plurality of steps, the plurality of steps are arranged in sequence from top to bottom, and the diameters of the plurality of steps decrease in sequence, and each step can be placed on a radiation source 7 of different diameters, thereby improving the applicability of the placement platform 33.

[0033] Furthermore, a rotating shaft 4 is added, one end of which is fixedly connected to the housing 1, and the other end is rotatably connected to the cover 2. The function of the rotating shaft 4 is to rotate the cover 2, one end of which is fixed to the housing 1, and the other end is rotatably connected to the cover 2, so that the cover 2 can rotate around the axis of the rotating shaft 4, thereby achieving the technical effect of opening or closing the first cavity 11.

[0034] Furthermore, a limiting component is added, and the limiting component is detachably connected to the side surfaces of both ends of the sliding component 3. In this embodiment, a limiting component is added, and the function of the limiting component is to limit the position of the sliding component 3 to prevent the sliding component 3 and the cover body 2 from being separated from each other during the operation of the gamma spectrometer shielding device, resulting in radiation damage to personnel. The limiting component is detachably connected to the side surfaces of both ends of the sliding component 3. Optionally, the limiting component includes a first limiting ring 51 and a second limiting ring 52, the first limiting ring 51 is sleeved on one end side of the sliding component 3, and the second limiting ring 52 is sleeved on the other end side of the sliding component 3. The first limiting ring 51 and the second limiting ring 52 are rubber rings, which can increase the friction between the limiting component and the sliding component 3, and at the same time, can also prevent the sliding component 3 from being separated from the cover body 2, thereby achieving the technical effect of preventing radiation leakage.

[0035] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A gamma spectrometer shielding device, characterized in that: include: A housing, wherein the housing has a first cavity for accommodating the detector; A cover body, the cover body is rotatably connected to the shell, the cover body has a first hole slot and a second hole slot, the first hole slot transversely passes through the cover body, the second hole slot is arranged in the middle of the cover body, one end of the second hole slot is interconnected with the first cavity, and the other end of the second hole slot is interconnected with the first hole slot; A sliding component, wherein a plurality of placement holes are provided in the middle of the sliding component, wherein the placement holes penetrate the upper side and the lower side of the sliding component, and each of the placement holes has a placement platform for placing a radiation source. The sliding component can be inserted into the first hole, and the outer wall of the sliding component fits with the inner wall of the first hole, and the sliding component can slide in the first hole.

2. The gamma spectrometer shielding device according to claim 1, characterized in that: One side of the sliding component has a marking scale for marking the position of the placement hole slot at the second hole slot.

3. The gamma spectrometer shielding device according to claim 2, characterized in that: The marking scale has multiple groups of marking parts, each group of marking parts includes two marking scales, and the two marking scales are respectively arranged on both sides of one of the placement holes.

4. The gamma spectrometer shielding device according to claim 3, characterized in that: The multiple placement hole slots include an adjacent first placement slot and a second placement slot, and two adjacent marking parts include a first identification scale, a second identification scale, a third identification scale and a fourth identification scale. The first placement slot is arranged on the left side of the second placement slot, the first identification scale is arranged on the left side of the first placement slot, the second identification scale is arranged on the right side of the second placement slot, the third identification scale is arranged between the first placement slot and the first identification scale, and the fourth identification scale is arranged on the right side of the second identification scale.

5. The gamma spectrometer shielding device according to claim 1, characterized in that: The placement platform has a plurality of steps, the plurality of steps are arranged in sequence from top to bottom, and the diameters of the plurality of steps decrease in sequence.

6. The gamma spectrometer shielding device according to claim 1, characterized in that: Also includes: A rotating shaft, one end of which is fixedly connected to the shell, and the other end of which is rotatably connected to the cover.

7. The gamma spectrometer shielding device according to any one of claims 1 to 6, characterized in that: Also includes: The limiting component is detachably connected to the side surfaces at both ends of the sliding component.

8. The gamma spectrometer shielding device according to claim 7, characterized in that: The limiting component includes a first limiting ring and a second limiting ring. The first limiting ring is sleeved on one end side of the sliding component, and the second limiting ring is sleeved on the other end side of the sliding component.

9. The gamma spectrometer shielding device according to any one of claims 1 to 6, characterized in that: The sliding member is made of lead.

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