Collimator for isotope separation on-line detection

Abstract

The utility model discloses a collimator for isotope separation on-line detection, which can reduce environmental radiation interference and improve measurement accuracy. The collimator for isotope separation online detection comprises a collimator body and a cylinder, the collimator body is a cylinder, and a plurality of transverse through holes are formed in the collimator body; a vertical detection hole is inwards formed in the middle position of the bottom surface of the collimator body; the detection hole passes through all the transverse through holes; the cylinder is located below the collimator body; the cylinder is detachably connected with the collimator body; the cylinder is provided with a vertical probe mounting hole; a detection probe is mounted in the probe mounting hole; the detection probe is aligned with the detection hole; a detachably connected bottom sealing cover is arranged at the lower end of the cylinder; the bottom sealing cover is provided with a wiring hole. By adopting the collimator for isotope separation on-line detection, the product purity and the production efficiency can be ensured, and the economic loss and the safety risk can be reduced.

Description

Technical Field

[0001] This invention relates to a detection device in the isotope separation process, and more particularly to a collimator for online detection of isotope separation. Background Technology

[0002] With the rapid development of nuclear medicine, medical isotopes are increasingly widely used in clinical practice. However, the production capacity and technological level of medical isotopes lag behind, leading to insufficient supply and affecting patient care. The preparation of medical isotopes mainly relies on irradiating target materials in a reactor or accelerator, followed by purification through a series of radiochemical separation processes. This process aims to precisely separate specific radioisotopes from a mixture to produce high-purity radiopharmaceuticals. However, because the target material may contain various other isotopes and elements, the radiochemical separation stage is particularly critical, requiring steps such as dissolution, extraction, and purification to ensure the purity of the final product. In the isotope separation process, online detection technology provides crucial data for analyzing isotope characteristics and their potential applications. Collimators are required in online detection technology.

[0003] The existing collimator environment causes significant interference in detection, resulting in low detection accuracy and poor precision. This severely impacts the purity and production efficiency of the isotope separation products. -1 Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a collimator for online detection of isotopes that can reduce environmental radiation interference and improve measurement accuracy.

[0005] The technical solution adopted by the present invention to solve its technical problem is: a collimator for online detection of isotopes, comprising a collimator body and a cylinder;

[0006] The collimator body is a cylinder, and multiple transverse through holes are provided on the collimator body; the transverse through holes extend along the diameter of the collimator body; a vertical detection hole is provided inward at the middle position of the bottom surface of the collimator body; the detection hole passes through all the transverse through holes.

[0007] The cylinder is located below the collimator body; the cylinder is detachably connected to the collimator body;

[0008] The cylinder is provided with a vertical probe mounting hole; a detection probe is installed in the probe mounting hole; the detection probe is aligned with the detection hole;

[0009] The lower end of the cylinder is provided with a detachable bottom sealing cover; the bottom sealing cover is provided with wiring holes.

[0010] Furthermore, the bottom sealing cover is provided with an annular boss; the lower end of the cylinder is provided with a connecting boss that matches the annular boss; the annular boss is fitted onto the connecting boss.

[0011] Furthermore, a limiting boss is provided on the lower surface of the collimator body; a limiting groove matching the limiting boss is provided on the upper end of the cylinder.

[0012] Furthermore, the collimator body is composed of multiple stacked cylindrical mounting blocks, and adjacent cylindrical mounting blocks are detachably connected.

[0013] Furthermore, the cylinder is composed of multiple stacked sub-cylindrical blocks; adjacent sub-cylindrical blocks are detachably connected.

[0014] Furthermore, multiple transverse through holes are evenly distributed vertically on the collimator body.

[0015] Furthermore, the collimator body, cylinder, and bottom sealing cap are all made of lead blocks.

[0016] Furthermore, the outer diameter of the collimator body, the cylinder, and the bottom sealing cover is 200mm; the height of the collimator body is 120mm, the height of the cylinder is 310mm, and the thickness of the bottom sealing cover is 50mm.

[0017] The probe mounting hole has a diameter of 70mm; the detection hole has a depth of 95mm; the detection hole has a diameter of 10mm; and the transverse through hole has a diameter of 10mm.

[0018] Furthermore, the detection probe employs a LaBr3 detector.

[0019] The beneficial effects of this invention are: the collimator for online isotope separation detection described in this invention can reduce environmental radiation interference and improve measurement accuracy. Using the collimator for online isotope separation detection described in this invention ensures the high efficiency and accuracy of the detection system, facilitates real-time online monitoring of the isotope separation process, enables timely adjustment of production parameters, ensures product purity and production efficiency, and reduces economic losses and safety risks. Attached Figure Description

[0020] Figure 1 This is an exploded schematic diagram of the collimator used for online detection of isotope separation in an embodiment of the present invention;

[0021] Figure 2 This is a perspective view of the collimator used for online detection of isotope separation in an embodiment of the present invention;

[0022] Figure 3 This is a front view of the collimator used for online detection of isotope separation in an embodiment of the present invention;

[0023] Figure 4 yes Figure 3 AA section view;

[0024] Figure 5 This is a schematic diagram of the collimator used for online detection of isotope separation in an embodiment of the present invention.

[0025] Figure 6 This is a perspective view of the collimator body and cylinder of the collimator used for online detection of isotope separation in this embodiment of the invention, when both are composite blocks;

[0026] The diagram shows: 100-collimator body, 110-lateral through hole, 120-detection hole, 130-limiting boss, 200-cylinder, 210-probe mounting hole, 220-limiting groove, 300-bottom sealing cover, 310-wiring hole, 320-annular boss, 400-detection probe, 500-pipe. Detailed Implementation

[0027] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0028] like Figures 1 to 6 As shown, the collimator for online detection of isotopes according to the present invention includes a collimator body 100 and a cylinder 200.

[0029] The collimator body 100 is a cylinder, and a plurality of transverse through holes 110 are provided on the collimator body 100; the transverse through holes 110 extend along the diameter of the collimator body 100; a vertical detection hole 120 is provided inward at the middle position of the bottom surface of the collimator body 100; the detection hole 120 passes through all the transverse through holes 110.

[0030] The main function of the horizontal through-hole 110 is to install pipes and detect the substances inside the pipes. The main function of the vertical detection hole 120 is to facilitate the detection of substances inside the pipes within the horizontal through-hole 110.

[0031] The cylinder 200 is located below the collimator body 100; the cylinder 200 is detachably connected to the collimator body 100.

[0032] The detachable connection between the cylinder 200 and the collimator body 100 can be a snap-fit ​​connection, with matching snap blocks and matching slots on the cylinder 200 and the collimator body 100; the snap-fit ​​connection is achieved through the snap blocks and slots. Alternatively, a threaded connection can be achieved, with matching external threaded bosses and annular bosses with internal threads on the cylinder 200 and the collimator body 100.

[0033] The cylinder 200 is provided with a vertical probe mounting hole 210; a detection probe 400 is installed in the probe mounting hole 210; the detection probe 400 is aligned with the detection hole 120.

[0034] The main function of the cylinder 200 is to install the detection probe 400 and reduce the influence of the external environment on the probe detection.

[0035] The lower end of the cylinder 200 is provided with a detachable bottom sealing cover 300; the bottom sealing cover 300 is provided with a wiring hole 310. The detachable connection between the cylinder 200 and the bottom sealing cover 300 can be a snap-fit ​​connection or a threaded connection.

[0036] In practical applications, the collimator body 100, cylinder 200, and bottom sealing cover 300 are all made of lead. Because these components are made of lead, the lead blocks can shield against interfering rays from the external environment, thereby reducing the impact of the external environment on detection accuracy. The outer diameter of the collimator body 100, cylinder 200, and bottom sealing cover 300 is all set to 200mm; the collimator body 100 is 120mm high, the cylinder 200 is 310mm high, and the bottom sealing cover 300 is 50mm thick.

[0037] The probe mounting hole 210 has a diameter of 70 mm; the detection hole 120 has a depth of 95 mm; the detection hole 120 has a diameter of 10 mm; and the transverse through hole 110 has a diameter of 10 mm.

[0038] The collimator body 100 is provided with three horizontal through holes 110 evenly distributed vertically; by providing three horizontal through holes 110, it is convenient to detect target objects in pipes at different positions.

[0039] During the testing process, such as Figure 5 As shown, the pipe 500 to be inspected is passed through the transverse through-hole 110; the inspection probe 400 is installed in the probe mounting hole 210, and the inspection probe 400 uses a LaBr3 detector. The inspection probe 400 is then activated to perform real-time inspection of the target object inside the pipe 500.

[0040] The design of the aperture depth of the collimator 120 for online isotope separation detection described in this invention is based on Monte Carlo simulations. By changing the collimator thickness, the influence of different thicknesses on the detector count rate was observed to find the optimal balance between shielding effect and signal transmission efficiency, providing theoretical support for the optimized design of the system shielding structure. Experimental simulations were conducted for different aperture depths of the aperture 120, and the final simulation results are shown in Table 1. When the collimator detection depth increases, although the total count rate and the full-energy peak count rate decrease, this also means that the interference from background radiation is reduced, which is beneficial to improving measurement accuracy.

[0041] Table 1. Variation of Collimator Thickness Parameters

[0042]

[0043]

[0044] In one feasible embodiment, in order to facilitate the installation of the detection probe 400, the bottom sealing cover 300 is provided with an annular boss 320; the lower end of the cylinder 200 is provided with a connecting boss that matches the annular boss 320; the annular boss 320 is fitted onto the connecting boss.

[0045] In one feasible embodiment, for ease of installation and disassembly, a limiting boss 130 is provided on the lower surface of the collimator body 100; and a limiting groove 220 matching the limiting boss 130 is provided on the upper end of the cylinder 200.

[0046] In one feasible embodiment, in order to facilitate adjustment of the height difference between adjacent transverse through holes 110, the collimator body 100 is further composed of multiple cylindrical mounting blocks stacked together, and adjacent cylindrical mounting blocks are detachably connected.

[0047] In one feasible embodiment, in order to facilitate adjustment of the height of the cylinder 200, the cylinder 200 is composed of multiple sub-cylindrical blocks stacked together; adjacent sub-cylindrical blocks are detachably connected.

[0048] In one feasible embodiment, specifically, there are three transverse through holes 110, which are evenly distributed vertically on the collimator body 100.

Claims

1. A collimator for online detection of isotopes, characterized in that: It includes a collimator body (100) and a cylinder (200); The collimator body (100) is a cylinder, and a plurality of transverse through holes (110) are provided on the collimator body (100); the transverse through holes (110) extend along the diameter of the collimator body (100); a vertical detection hole (120) is provided inward at the middle position of the bottom surface of the collimator body (100); the detection hole (120) passes through all the transverse through holes (110); The cylinder (200) is located below the collimator body (100); the cylinder (200) is detachably connected to the collimator body (100); The cylinder (200) is provided with a vertical probe mounting hole (210); a detection probe (400) is installed in the probe mounting hole (210); the detection probe (400) is aligned with the detection hole (120); The lower end of the cylinder (200) is provided with a detachable bottom sealing cover (300); the bottom sealing cover (300) is provided with a wiring hole (310).

2. The collimator for online detection of isotopes as described in claim 1, characterized in that: The bottom sealing cover (300) is provided with an annular boss (320); the lower end of the cylinder (200) is provided with a connecting boss that matches the annular boss (320); the annular boss (320) is fitted onto the connecting boss.

3. The collimator for online detection of isotopes as described in claim 1, characterized in that: The lower surface of the collimator body (100) is provided with a limiting boss (130); the upper end of the cylinder (200) is provided with a limiting groove (220) that matches the limiting boss (130).

4. The collimator for online detection of isotopes as described in claim 1, characterized in that: The collimator body (100) is composed of multiple cylindrical mounting blocks stacked together, and adjacent cylindrical mounting blocks are detachably connected.

5. The collimator for online detection of isotopes as described in claim 1, characterized in that: The cylinder (200) is composed of multiple sub-cylindrical blocks stacked together; adjacent sub-cylindrical blocks are detachably connected.

6. The collimator for online detection of isotopes as described in claim 1, characterized in that: Multiple transverse through holes (110) are evenly distributed vertically on the collimator body (100).

7. The collimator for online detection of isotopes as described in claim 1, characterized in that: The collimator body (100), cylinder (200), and bottom sealing cover (300) are all made of lead.

8. The collimator for online detection of isotopes as described in claim 1, characterized in that: The outer diameter of the collimator body (100), cylinder (200) and bottom sealing cover (300) is 200mm; the collimator body (100) is 120mm high, the cylinder (200) is 310mm high, and the bottom sealing cover (300) is 50mm thick. The probe mounting hole (210) has a diameter of 70 mm; the detection hole (120) has a depth of 95 mm; the detection hole (120) has a diameter of 10 mm; and the transverse through hole (110) has a diameter of 10 mm.

9. The collimator for online detection of isotopes as described in claim 1, characterized in that: The detection probe (400) uses a LaBr3 detector.

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