Detection and measurement device convenient for shielding detection

Abstract

The utility model relates to a detection and measurement device facilitating shielding detection. The detection and measurement device comprises a detector supporting frame, a sliding rail, a calibrated scale and a shielding assembly. The number of the detector supporting frames is two, the two detector supporting frames are oppositely arranged, a gamma detector and a beta detector are arranged on the two detector supporting frames respectively, the emission direction of the gamma detector is right opposite to the emission direction of the beta detector, and the detector supporting frames are arranged on the sliding rail in a sliding mode. The shielding assembly comprises a shielding plate and a shielding installation part, the shielding installation part is of a U-shaped structure, installation grooves are formed in the two ends of the inner side of the shielding installation part respectively, the shielding plate is matched with the installation grooves, the shielding plate is embedded in the installation grooves, and the gamma detector and the beta detector are spaced. The shielding plate can be conveniently installed on the installation groove of the shielding supporting frame, so that the shielding plate is located between the beta detector and the gamma detector, and gamma rays emitted from a radioactive source are prevented from directly entering the beta detector.

Description

Technical Field

[0001] The present application relates to the technical field of experimental instruments, and in particular to a detection and measurement device that is convenient for detecting occlusion. Background Art

[0002] In the field of nuclear physics research, coincidence measurement technology has a wide range of applications in various fields of nuclear physics experiments. In the study of nuclear reactions, it can be used to determine the energy and angular distribution of reactants; in nuclear decay measurements, it can be used to study the nuclear decay mechanism, the angular correlation between cascade radiation, the half-life of short-lived radioactive nuclides, etc.; in the field of cosmic ray research, it can be used to measure the observation of cosmic ray shower phenomena. Due to the development of fast electronics, multi-channel analyzers and multi-parameter analysis systems and the application of electronic computers in nuclear experiments, the coincidence method has become an indispensable experimental means to achieve multi-parameter measurement. Through this experiment, you can learn the basic methods of coincidence measurement and use the coincidence method to determine the absolute activity of the radioactive source. Using two or more different detectors to record two or more simultaneous and interrelated atomic nuclear events is called coincidence measurement. Coincidence measurement technology is a commonly used measurement technology in nuclear physics experiments. It can be used to measure the energy and angular distribution of particles released in the reaction. Radioactivity refers to the number of atoms of a radioactive element or isotope that decays per second. It is an important radiation quantity used to describe the characteristics of radioactive nuclides. It reflects the nuclear decay rate of radioactive nuclides. This experimental device uses a dual-probe β-γ coincidence measurement method to measure the activity of the laboratory 60Co source.

[0003] In the β-γ coincidence method, the β detector is usually used first, and then the γ detector is used for measurement. This order is mainly to avoid the influence of gamma rays on the β detector, because gamma rays have strong penetrating ability and may directly enter the β detector through the β detector, thereby causing errors or interference. In the prior art, in order to avoid gamma rays interfering with the β detector, a shielding component is usually designed to isolate the two detectors. However, the existing design may not be fast enough in installation and removal. Utility Model Content

[0004] In view of this, the present application proposes a detection and measurement device that is convenient for detecting shielding and can quickly install and remove shielding members.

[0005] According to one aspect of the present application, a detection and measurement device for detecting occlusion is provided, comprising: a detector support frame, wherein the detector support frames are two, the two detector support frames are arranged opposite to each other, and a γ detector and a β detector are arranged on the two detector support frames respectively, and the emission direction of the γ detector is opposite to the emission direction of the β detector;

[0006] A slide rail, on which two of the detector supports are slidably arranged, and the two detector supports can slide towards or away from each other;

[0007] A scale, which is arranged on the front side of the detector support, and measuring members are arranged on both of the two detector supports, and the measuring members are in contact with the scale to measure the distance between the γ detector and the β detector;

[0008] A shielding assembly, which is arranged between the two detector supports, and the shielding assembly includes a shielding plate and a shielding mounting member. The shielding mounting member has a "U" - shaped structure, and installation grooves are respectively opened at both ends along the inner side. The shielding plate is matched with the installation grooves, and the shielding plate is embedded inside the installation grooves to separate the γ detector and the β detector.

[0009] In a possible implementation manner, the opening directions of the two installation grooves are opposite, and the installation grooves are of an open - structure along the opening direction of the shielding mounting member.

[0010] In a possible implementation manner, the cross - section of the installation groove is square.

[0011] In a possible implementation manner, the shielding plate is a square structure with a preset thickness.

[0012] In a possible implementation manner, the shielding mounting member includes: a fixing part and a mounting part;

[0013] The fixing part is a long - strip - shaped structure with a square cross - section in the length direction, and the fixing part is arranged at the middle position of the slide rail, and the length direction of the fixing part is perpendicular to the sliding direction of the slide rail;

[0014] The mounting part is a long - strip - shaped structure, and the installation groove is opened on the side wall, and the installation groove penetrates through both ends along the length direction of the mounting part. And there are two mounting parts, and the two mounting parts are respectively arranged at both ends in the length direction of the fixing part, and the installation grooves of the two mounting parts are opposite.

[0015] In a possible implementation manner, the installation groove of the mounting part covers one end in the length direction of the fixing part, and the mounting part is perpendicular to the fixing part and is fixed by bolt connection.

[0016] In a possible implementation manner, the distance between the two mounting parts is less than the width of the shielding plate;

[0017] The distance between the installation grooves of the two mounting parts is greater than the width of the shielding plate.

[0018] In a possible implementation, the length of the mounting portion is smaller than the length of the shielding plate.

[0019] In a possible implementation, it also includes: a movable part;

[0020] The movable part is a plate-like structure with a "U"-shaped cross section, and the movable part cover is arranged above the slide rail and located in the middle position of the slide rail;

[0021] The shielding mounting member is arranged on the top of the movable member and is located above the slide rail.

[0022] In one possible implementation, the mounting groove and the shielding plate are interference fit.

[0023] The beneficial effect of the detection and measurement device for facilitating detection of shielding in the embodiment of the present application is as follows: since a shielding object is usually required between the β detector and the γ detector, mainly to prevent the gamma rays emitted from the radiation source from directly entering the interior of the β detector, the shielding object can be lead or other radiation shielding materials of appropriate thickness, which can effectively absorb or scatter most of the gamma rays, thereby reducing their impact on the β detector. Specifically, the present application provides a shielding plate and a shielding mounting member in the middle position of the two detector support frames, and the shielding plate is a "U"-shaped structure with a mounting groove, so that the shielding plate can be conveniently installed on the mounting groove of the shielding support frame, so that it is located between the β detector and the γ detector, preventing the gamma rays emitted from the radiation source from directly entering the interior of the β detector. The shielding mounting member is a "U"-shaped structure, and after the shielding is removed, it will not affect the test of measuring the activity of the radiation source by the β-γ coincidence method, so the cooperation between the shielding plate and the shielding mounting member can quickly install and remove the shielding plate on the shielding mounting member.

[0024] Other features and aspects of the present application will become apparent from the following detailed description of exemplary embodiments with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate exemplary embodiments, features, and aspects of the present application and, together with the description, serve to explain the principles of the present application.

[0026] Figure 1 A schematic diagram showing a detection and measurement device for facilitating detection of occlusion according to an embodiment of the present application;

[0027] Figure 2 An exploded schematic diagram showing a detection and measurement device for facilitating detection of occlusion according to an embodiment of the present application;

[0028] Figure 3 A schematic diagram of a shielding assembly and movable parts of a detection and measurement device for facilitating detection of shielding in an embodiment of the present application is shown. Detailed Implementation Modes

[0029] Various exemplary embodiments, features, and aspects of the present application will be described in detail below with reference to the accompanying drawings. Identical reference numerals in the drawings denote elements having the same or similar functions. Although various aspects of the embodiments are shown in the drawings, the drawings are not necessarily drawn to scale unless otherwise specified.

[0030] Among them, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the present utility model or 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 thus should not be construed as a limitation to the present utility model.

[0031] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, "a plurality" means two or more unless otherwise specifically defined.

[0032] The special term "exemplary" here means "serving as an example, embodiment, or illustration". Any embodiment described as "exemplary" here does not have to be construed as superior to or better than other embodiments.

[0033] In addition, for better illustration of the present application, numerous specific details are given in the following detailed implementation modes. Those skilled in the art should understand that the present application can also be implemented without certain specific details. In some instances, methods, means, elements, and circuits well-known to those skilled in the art are not described in detail so as to highlight the gist of the present application.

[0034] Refer to Figure 1 、 Figure 2 and Figure 3The detection and measurement device for detecting shielding according to the embodiment of the present application comprises: a detector support frame 100, a slide rail 500, a scale 600 and a shielding assembly 300. There are two detector support frames 100, which are arranged opposite to each other, and the two detector support frames 100 are respectively provided with a γ detector 210 and a β detector 220, and the emission direction of the γ detector 210 is opposite to the emission direction of the β detector 220. The detector support frames 100 are slidably arranged on the slide rail 500, and the two detector support frames 100 can slide toward or relative to each other, the scale 600 is arranged on the front side of the detector support, and the two detector support frames 100 are both provided with a measuring piece 700, and the measuring piece 700 is provided on the two detector support frames 100. The measuring piece 700 is in contact with the scale 600 to measure the spacing distance between the γ detector 210 and the β detector 220. The shielding assembly 300 is set between the two detector support frames 100, and the shielding assembly 300 includes a shielding plate 310 and a shielding mounting member 320. The shielding mounting member 320 is in a "U"-shaped structure, and mounting grooves 3211 are respectively opened along the two ends of the inner side. The shielding plate 310 matches the mounting groove 3211. The shielding plate 310 is embedded in the mounting groove 3211 to separate the γ detector 210 and the β detector 220.

[0035] In this embodiment, since a shielding object is usually required between the β detector 220 and the γ detector 210, mainly to prevent the gamma rays emitted from the radiation source from directly entering the inside of the β detector 220, the shielding object can be lead or other radiation shielding materials of appropriate thickness, which can effectively absorb or scatter most of the gamma rays, thereby reducing their impact on the β detector 220. Specifically, the present application provides a shielding plate 310 and a shielding mounting member 320 at the middle position of the two detector support frames 100. The shielding plate 310 is a "U"-shaped structure with a mounting groove 3211, so that the shielding plate 310 can be conveniently installed on the mounting groove 3211 of the shielding support frame, so that it is located between the β detector 220 and the γ detector 210, thereby preventing the gamma rays emitted from the radiation source from directly entering the inside of the β detector 220. The shielding mounting member 320 is a "U"-shaped structure. After the shielding is removed, it will not affect the test of measuring the activity of the radioactive source by the β-γ coincidence method. Therefore, the cooperation between the shielding plate 310 and the shielding mounting member 320 can quickly install and remove the shielding plate 310 on the shielding mounting member 320.

[0036] It should be noted that the β detector 220 and γ detector 210 used are currently available and can be realized, and the object of this application is the overall bracket and shielding assembly 300, and the detectors will not be described in detail here.

[0037] In a specific embodiment, the opening directions of the two mounting grooves 3211 face each other, and the mounting grooves 3211 are open structures along the opening direction of the shielding mounting member 320. In this way, the shielding plate 310 can be inserted from the opening position of the shielding mounting member 320 with a "U" - shaped structure to seal the shielding mounting member 320 with a "U" - shaped cross - section, thereby isolating the detectors of the two detector support frames 100.

[0038] In a specific embodiment, the cross - section of the mounting groove 3211 is square, and the shielding plate 310 is a square structure with a preset thickness. When the shielding plate 310 is arranged in the mounting groove 3211 of the shielding mounting member 320, the mounting groove 3211 with a square cross - section and the square shielding plate 310 with a preset thickness can fit more closely during installation.

[0039] In a specific embodiment, the shielding mounting member 320 includes: a fixing part 322 and a mounting part 321. The fixing part 322 is a long strip - shaped structure with a square cross - section in the length direction, and the fixing part 322 is arranged at the middle position of the slide rail 500, and the length direction of the fixing part 322 is perpendicular to the sliding direction of the slide rail 500. The mounting part 321 is a long strip - shaped structure, with mounting grooves 3211 opened on the side walls, and the mounting grooves 3211 penetrate through both ends along the length direction of the mounting part 321. And there are two mounting parts 321, and the two mounting parts 321 are respectively arranged at both ends in the length direction of the fixing part 322, and the mounting grooves 3211 of the two mounting parts 321 face each other.

[0040] In this embodiment, the mounting groove 3211 of the mounting part 321 covers one end in the length direction of the fixing part 322, and the mounting part 321 is fixed vertically and connected and fixed by bolts. In this way, one end of the mounting groove 3211 that penetrates through both ends can be covered on the fixing part 322, and then fixed by using bolts, thereby forming a "U" - shaped shielding mounting member 320.

[0041] In a specific embodiment, the interval distance between the two mounting parts 321 is less than the width of the shielding plate 310, the distance between the mounting grooves 3211 of the two mounting parts 321 is greater than the width of the shielding plate 310, and the length of the mounting part 321 is less than the length of the shielding plate 310. In this way, the shielding plate 310 can be installed between the mounting grooves 3211 of the two mounting parts 321.

[0042] In a specific embodiment, it further includes: a movable part. The movable part is a plate - shaped structure with a "U" - shaped cross - section, and the movable part covers the upper part of the slide rail 500 and is located at the middle position of the slide rail 500. The shielding mounting member 320 is arranged on the top of the movable part and is located above the slide rail 500. In this way, the shielding plate 310 and the shielding mounting member 320 can be arranged above the slide rail 500 and do not directly contact the slide rail 500, so that the setting of the shielding assembly 300 will not affect the use of the slide rail 500.

[0043] In a specific embodiment, the installation groove 3211 and the shielding plate 310 are in interference fit, which can facilitate the quick installation and disassembly of the shielding plate 310 relative to the installation groove 3211.

[0044] The embodiments of the present application have been described above. The above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and variations are obvious to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The selection of the terms used herein is intended to best explain the principles of the embodiments, the practical application, or the improvement of the technology in the market, or to enable other ordinary skill in the art in this technical field to understand the disclosed embodiments.

Claims

1. A detection and measurement device convenient for detecting occlusion, which is installed on the tabletop of an operating table, and is characterized in that, Comprising: Detector support frames, there are two detector support frames, the two detector support frames are arranged oppositely, and a γ detector and a β detector are respectively arranged on the two detector support frames, and the emission direction of the γ detector is directly opposite to the emission direction of the β detector; Slide rail, the two detector support frames are slidably arranged on the slide rail, and the two detector support frames can slide towards or away from each other; Scale, the scale is arranged on the front side of the detector support, and a measuring piece is arranged on each of the two detector support frames, and the measuring piece abuts against the scale to measure the spacing distance between the γ detector and the β detector; Blocking assembly, the blocking assembly is arranged between the two detector support frames, and the blocking assembly includes a baffle plate and a blocking mounting member, the blocking mounting member has a "U"-shaped structure, and mounting grooves are respectively opened at both ends along the inner side, and the baffle plate is matched with the mounting groove, and the baffle plate is embedded in the interior of the mounting groove to space the γ detector and the β detector.

2. The detection and measurement device for facilitating occlusion detection according to claim 1, wherein, The opening directions of the two mounting grooves are directly opposite, and the mounting groove is an open structure along the opening direction of the blocking mounting member.

3. The detection and measurement device for facilitating occlusion detection according to claim 1, wherein The cross section of the mounting groove is square.

4. The detection and measurement device for facilitating occlusion detection according to claim 3, wherein, The baffle plate is a square structure with a preset thickness.

5. The detection and measurement device for facilitating occlusion detection according to any one of claims 1-4, characterized in that, The blocking mounting member includes: a fixing part and a mounting part; The fixing part is a long strip-shaped structure with a square cross section in the length direction, and the fixing part is arranged at the middle position of the slide rail, and the length direction of the fixing part is perpendicular to the sliding direction of the slide rail; The mounting part is a long strip-shaped structure, and the mounting groove is opened on the side wall, and the mounting groove penetrates through both ends along the length direction of the mounting part, and there are two mounting parts, and the two mounting parts are respectively arranged at both ends in the length direction of the fixing part, and the mounting grooves of the two mounting parts are directly opposite.

6. The detection and measurement device for facilitating occlusion detection according to claim 5, characterized in that, The mounting groove of the mounting part covers one end in the length direction of the fixing part, and the mounting part is perpendicular to the fixing part and is fixedly connected by bolts.

7. The detection and measurement device for facilitating occlusion detection according to claim 5, wherein The spacing distance between the two mounting parts is less than the width of the baffle plate; The distance between the mounting grooves of the two mounting parts is greater than the width of the baffle plate.

8. The detection and measurement device for facilitating occlusion detection according to claim 7, wherein The length of the mounting part is less than the length of the baffle plate.

9. The detection and measurement device for facilitating occlusion detection according to claim 5, characterized in that Further comprising: Movable part; The movable part is a plate-shaped structure with a "U"-shaped cross section, and the movable part covers the upper part of the slide rail and is located at the middle position of the slide rail; The blocking mounting member is arranged on the top of the movable part and is located above the slide rail.

10. The detection and measurement device for facilitating occlusion detection according to claim 5, characterized in that, The mounting groove and the baffle plate are in interference fit.

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