An adjustable α and β surface contamination auxiliary measurement device

Abstract

The utility model discloses an adjustable α, β surface contamination auxiliary measurement device, including a bracket body, the bracket body is a frame-type structure, a detection window is arranged at the center, limit plates are arranged on both sides of the bottom of the detection window, film pressing components are arranged on both sides of the top of the bracket body near the detection window, bracket through holes are opened at the four corners of the bracket body frame, and height adjustment brackets are slidably connected in the four bracket through holes. In the utility model, the height of the bracket body can be precisely adjusted by setting positioning holes with fixed spacing, and the detection result is more accurate. At the same time, a protective film can be placed on the detection window of the pollutant measuring instrument, and the two ends of the protective film extend to the gap between the pressure strip and the bracket body, and then the pressure strip is rotated to press down the protective film to fix the protective film. The protective film is tightly connected to the detection window of the measuring instrument to protect the detection window from being contaminated and to avoid pollutants on the surface of the detection window affecting the detection accuracy.

Description

Technical Field

[0001] The utility model relates to the technical field of radiation measurement, in particular to an auxiliary measurement device capable of adjusting α and β surface contamination. Background Art

[0002] Surface contamination monitoring instruments are instruments used to monitor the contamination level of various types of surface radioactive substances (α, β). When used, they are generally measured directly on the measured surface or above the source. The distance between the detector and the measured surface (measurement distance) during actual measurement is required to be consistent with that during instrument verification / calibration, otherwise the measurement results will have a large deviation. When using existing handheld surface contamination monitoring instruments, the measurement distance is mainly controlled by the personal experience of the monitoring personnel. The measurement distance error is large, which brings large errors to the measurement results; and during the measurement process, the monitoring specifications generally require that the measurement distances for α and β surface contamination measurements be 5mm and 10mm respectively. The distances are very small, which can easily cause the monitoring instrument to be contaminated by radioactivity.

[0003] Prior art publication number CN213712552U provides a radioactive surface contamination measuring bracket, including a bracket body, the bracket body is provided with a receiving through hole for placing a surface contamination monitoring instrument, a supporting structure is arranged at the receiving through hole, and after the surface contamination monitoring instrument is installed in place in the receiving through hole, the supporting structure can support the surface contamination monitoring instrument and expose the detection window of the surface contamination monitoring instrument.

[0004] In the above device, the height of the bracket is adjusted by screwing the threaded connector. This manual screwing method cannot ensure that the height adjustment distance of the bracket can just meet the detection needs every time. The height adjustment depends entirely on personal experience, and the adjustment accuracy is poor. It is difficult to ensure the height required for detection by the pollutant meter, affecting the pollutant detection accuracy. At the same time, although a certain gap is left between the pollutant meter and the ground or table in the above device through the bracket, the surface of the detection window of the pollutant meter will inevitably be contaminated with impurities such as dust and water vapor in the environment. If not handled, the pollutants attached to the surface of the detection window will affect the detection accuracy. Utility Model Content

[0005] The utility model aims to provide an adjustable α and β surface contamination auxiliary measurement device to solve the problems raised in the above background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] An adjustable α, β surface contamination auxiliary measurement device includes a bracket main body, the bracket main body is a frame-type structure, a detection window is provided at the center, limit plates are provided on both sides of the bottom of the detection window, and film pressing assemblies are provided on both sides of the top of the bracket main body near the detection window. Bracket through holes are opened at the four corners of the bracket main body frame, and height-adjusting brackets are slidably connected to the four bracket through holes.

[0008] As a further solution of the utility model: a pull rod is provided on one side of the outside of the bracket body corresponding to the four height-adjusting brackets, and a plurality of positioning holes are evenly spaced on the outer wall of the height-adjusting bracket corresponding to the side of the pull rod, and one end of the pull rod is inserted into the positioning hole on the corresponding side.

[0009] As a further solution of the utility model: a pull rod through hole is opened on one side of the inner wall of the bracket body corresponding to the four pull rods, and the four pull rods are respectively slidably inserted in the pull rod through holes on the corresponding side, and one end of the four pull rods is sleeved with a spring, and the four springs are respectively arranged in the pull rod through holes on the corresponding side, and the two ends of the four springs are respectively connected and fixed to the pull rod on the corresponding side and the pull rod through holes on the corresponding side.

[0010] As a further solution of the utility model: the distance between two adjacent positioning holes is 0.5 cm.

[0011] As a further solution of the utility model: the film pressing assembly includes a base and a pressure strip, the base is fixed on the top of the bracket body, and a rotating shaft is rotatably connected inside the base, the pressure strip is arranged in parallel on one side of the top of the bracket body close to the detection window, and one end of the pressure strip is fixedly connected to the rotating shaft.

[0012] As a further solution of the utility model: a locking pin is provided between the base and the rotating shaft.

[0013] As a further solution of the utility model: an anti-slip strip is fixed to the bottom of the pressure strip.

[0014] As a further solution of the utility model: a pressing plate and a pad are respectively fixed to the upper and lower ends of the height-adjusting bracket, and an anti-slip pad is provided on the upper surface of the pressing plate and the lower surface of the pad.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0016] 1. In the present invention, five positioning holes are preferably provided to achieve five-level adjustment of the height of the pollutant measuring instrument. When the height of the bracket body needs to be adjusted, first pull the pull rod outward to disengage one end of the pull rod from the positioning hole, then slightly push the height-adjusting bracket downward and release the pull rod. At this time, one end of the pull rod is against the outer wall of the height-adjusting bracket, and then continue to push the height-adjusting bracket downward until a click is heard. At this time, the pull rod is completely reset under the action of the spring and one end of the pull rod is inserted into the next positioning hole 0.5 cm apart, completing a height adjustment. When a larger height adjustment is required, the above steps can be repeated, each time increasing by 0.5 cm until the height adjustment needs are met. By setting positioning holes with fixed spacing, the height of the bracket body can be accurately adjusted, thereby achieving accurate adjustment of the height between the detection window of the pollutant measuring instrument and the ground or table, meeting the pollution detection needs of different types of pollutant measuring instruments, and the detection results are more accurate.

[0017] 2. In the utility model, when the pollutant measuring instrument is in use, a protective film can be covered on the detection window of the measuring instrument, and the two ends of the protective film extend to the gap between the pressure strip and the bracket body, and then the pressure strip is rotated to press down the protective film to fix the protective film. The protective film and the detection window of the measuring instrument are tightly connected together to protect the detection window from being contaminated and to avoid pollutants on the surface of the detection window affecting the detection accuracy. Furthermore, an anti-slip strip is provided at the bottom of the pressure strip to ensure that when the pressure strip presses the protective film, the pressure strip can press the protective film tightly to prevent the pressure strip and the protective film from slipping and falling off. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 It is a structural schematic diagram of the utility model.

[0020] Figure 2 It is a schematic diagram of the top structure of the utility model.

[0021] Figure 3 for Figure 2 Enlarged view of point A in the middle.

[0022] Figure 4 It is a schematic diagram of the connection structure between the height-adjusting bracket and the pull rod in the utility model.

[0023] Figure 5 It is a structural schematic diagram of the medium-pressure membrane assembly of the utility model.

[0024] Figure 6 It is a schematic diagram of the structure of the height-adjusting bracket after further improvement in the utility model.

[0025] Notes on figure numbers: 1-bracket body, 2-detection window, 3-limiting plate, 4-film pressing assembly, 41-base, 42-rotating shaft, 43-locking pin, 44-pressure strip, 45-anti-slip strip, 5-height-adjusting bracket, 6-positioning hole, 7-bracket through hole, 8-pull rod, 9-pull rod through hole, 10-spring, 11-pressure plate, 12-pad. DETAILED DESCRIPTION

[0026] The following embodiments will be combined with the accompanying drawings to describe the utility model in detail. In the drawings or descriptions, similar or identical parts use the same reference numerals, and in actual applications, the shape, thickness or height of each component can be enlarged or reduced. The various embodiments listed in the utility model are only used to illustrate the utility model, and are not used to limit the scope of the utility model. Any obvious modifications or changes made to the utility model do not depart from the spirit and scope of the utility model.

[0027] Example 1

[0028] See also Figures 1 to 4 In an embodiment of the utility model, an adjustable α, β surface contamination auxiliary measurement device includes a bracket body 1, the bracket body 1 is a frame-type structure, a detection window 2 is arranged at the center thereof, the detection window 2 is used to fix the pollutant measuring instrument, after being fixed, the detection window of the pollutant measuring instrument protrudes below the detection window 2, the shape of the detection window 2 is adapted to the shape of the detection window of the pollutant measuring instrument, both sides of the bottom of the detection window 2 are provided with limit plates 3, the limit plates 3 are used to limit and fix the detection window of the pollutant measuring instrument, the top of the bracket body 1 is close to the detection window 2 Both sides are provided with film pressing components 4, the four corners of the bracket body 1 are provided with bracket through holes 7, the four bracket through holes 7 are slidably connected with height adjustment brackets 5, and the height between the bracket body 1 and the ground or table can be adjusted by adjusting the height of the bracket 5;

[0029] A pull rod 8 is arranged on one side of the bracket body 1 corresponding to the four height-adjusting brackets 5, and a pull rod through hole 9 is opened on one side of the inner wall of the bracket body 1 corresponding to the four pull rods 8. The four pull rods 8 are respectively slidably inserted into the pull rod through holes 9 on the corresponding side, and one end of the four pull rods 8 is sleeved with a spring 10, which is respectively arranged in the pull rod through holes 9 on the corresponding side, and the two ends of the four springs 10 are respectively connected and fixed to the pull rod 8 on the corresponding side and the pull rod through holes 9 on the corresponding side. When the pull rod 8 is pulled outward, the spring 10 will be squeezed and deformed. After the pull rod 8 is released, the spring will rebound and drive the pull rod 8 to reset.

[0030] A plurality of positioning holes 6 are provided at equal intervals on one side of the outer wall of the height-adjusting bracket 5 corresponding to the pull rod 8. One end of the pull rod 8 is inserted into the positioning hole 6 on the corresponding side. The spacing between two adjacent positioning holes 6 is 0.5 cm. In this embodiment, five positioning holes 6 are preferably provided to achieve five-speed adjustment of the height of the pollutant measuring instrument. When the height of the bracket body 1 needs to be adjusted, the pull rod 8 is first pulled outward to disengage one end of the pull rod 8 from the positioning hole 6, and then the height-adjusting bracket 5 is slightly pushed downward and the pull rod 8 is released. At this time, one end of the pull rod 8 is against the outer wall of the height-adjusting bracket 5, and then the height-adjusting bracket 5 is continued to be pushed downward. , until a click sound is heard, at which time the pull rod 8 is completely reset under the action of the spring 10 and one end of the pull rod is inserted into the next positioning hole 6 0.5 cm away, completing a height adjustment. When a larger height adjustment is required, the above steps can be repeated, each time increasing the height by 0.5 cm until the height adjustment needs are met. By setting positioning holes with fixed spacing, the height of the bracket body can be accurately adjusted, thereby achieving accurate adjustment of the height between the detection window of the pollutant meter and the ground or table top, meeting the pollution detection needs of different types of pollutant meters, and making the detection results more accurate.

[0031] Example 2

[0032] Based on Example 1, please refer to Figure 5 The film pressing assembly 4 includes a base 41 and a pressure strip 44. The base 41 is fixed on the top of the bracket body 1, and a rotating shaft 42 is rotatably connected in the base 41. The pressure strip 44 is arranged in parallel on the top of the bracket body 1 near the detection window 2, and one end of the pressure strip 44 is fixedly connected to the rotating shaft 42. The pressure strip 44 can be rotated by the rotating shaft 42 to open the gap between the pressure strip 44 and the bracket body 1. When the pollutant measuring instrument is used, a protective film can be covered on the detection window of the measuring instrument, and both ends of the protective film extend to the gap between the pressure strip 44 and the bracket body 1. , and then rotate the pressure strip to press down the protective film to fix the protective film. The protective film is tightly connected to the detection window of the measuring instrument to protect the detection window from being contaminated and to avoid pollutants on the surface of the detection window affecting the detection accuracy. An anti-slip strip 45 is fixed to the bottom of the pressure strip 44. The anti-slip strip 45 further ensures that when the pressure strip 44 presses the protective film, the pressure strip can press the protective film to prevent the pressure strip and the protective film from slipping and falling off. A locking pin 43 is provided between the base 41 and the rotating shaft 42. The locking pin 43 can fix the rotating shaft and the base, lock the rotating shaft, and prevent it from rotating.

[0033] See also Figure 6A pressing plate 11 and a pad 12 are respectively fixed to the upper and lower ends of the height-adjusting bracket 5. The upper surface of the pressing plate 11 and the lower surface of the pad 12 are both provided with anti-slip pads. Pressing the height-adjusting bracket 5 downward through the pressing plate 11 will save effort and make pressing easier. The pad 12 will expand the contact area between the height-adjusting bracket 5 and the ground or table top, making the support more stable. The anti-slip design at the bottom of the pad further ensures the overall stability of the device.

[0034] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0035] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An adjustable α, β surface contamination auxiliary measurement device, comprising a support body (1), wherein the support body (1) is a frame-shaped structure, a detection window (2) is provided at the center thereof, and the characteristics are: Limiting plates (3) are provided on both sides of the bottom of the detection window (2), and film pressing components (4) are provided on both sides of the top of the bracket body (1) close to the detection window (2). Bracket through holes (7) are provided at the four corners of the bracket body (1), and height adjustment brackets (5) are slidably connected in the four bracket through holes (7).

2. The adjustable α, β surface contamination auxiliary measurement device according to claim 1 is characterized in that: A pull rod (8) is provided on one side of the outside of the bracket body (1) corresponding to the four height-adjusting brackets (5), and a plurality of positioning holes (6) are evenly spaced on the outer wall of the height-adjusting bracket (5) corresponding to the side of the pull rod (8), and one end of the pull rod (8) is inserted into the positioning hole (6) on the corresponding side.

3. The adjustable α, β surface contamination auxiliary measurement device according to claim 2 is characterized in that: A pull rod through hole (9) is provided on one side of the inner wall of the bracket body (1) corresponding to the four pull rods (8), and the four pull rods (8) are respectively slidably inserted in the pull rod through hole (9) on the corresponding side. One end of the four pull rods (8) is sleeved with a spring (10), and the four springs (10) are respectively arranged in the pull rod through hole (9) on the corresponding side, and the two ends of the four springs (10) are respectively connected and fixed to the pull rod (8) on the corresponding side and the pull rod through hole (9) on the corresponding side.

4. The adjustable α, β surface contamination auxiliary measurement device according to claim 3 is characterized in that: The distance between two adjacent positioning holes (6) is 0.5 cm.

5. The adjustable α, β surface contamination auxiliary measurement device according to claim 1 or 4, characterized in that: The film pressing assembly (4) comprises a base (41) and a pressure strip (44); the base (41) is fixed on the top of the bracket body (1), and a rotating shaft (42) is rotatably connected inside the base (41); the pressure strip (44) is arranged in parallel on one side of the top of the bracket body (1) close to the detection window (2), and one end of the pressure strip (44) is fixedly connected to the rotating shaft (42).

6. The adjustable α, β surface contamination auxiliary measurement device according to claim 5, characterized in that: A locking pin (43) is provided between the base (41) and the rotating shaft (42).

7. The adjustable α, β surface contamination auxiliary measurement device according to claim 6, characterized in that: An anti-slip strip (45) is fixed to the bottom of the pressure strip (44).

8. The adjustable α, β surface contamination auxiliary measurement device according to claim 1, characterized in that: A pressing plate (11) and a pad (12) are fixed to the upper and lower ends of the height-adjusting bracket (5), respectively, and an anti-slip pad is provided on the upper surface of the pressing plate (11) and the lower surface of the pad (12).

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