A remote-controllable automatic measuring device and method for gas radioactive source

Abstract

The application discloses a kind of gas radioactive source automatic measuring device and method capable of remote control, solve the problem that too strong radioactive source can cause strong radiation to test personnel, personal safety cannot be preserved, specifically includes first detector, second detector, measurement platform etc.;The detection end of first detector and second detector is oppositely arranged, and the detector body of the two is located on the two sides of measurement platform, and the detection arm of the two is located above measurement platform;Source box fixing frame is detachably connected between the detection end of first detector and second detector;Source box is installed in source box fixing frame, and the two ends thereof correspond to the detection end of first detector and second detector respectively;Gas supply unit is communicated with source box;Vacuum unit is communicated with source box;Plug-in unit is installed on measurement platform, and the acting end thereof can be adapted with source box;Remote control unit is connected with first detector, second detector, gas supply unit, vacuum unit and plug-in unit respectively.

Description

Technical Field

[0001] This invention relates to a measuring device for gaseous radioactive sources, and more specifically to an automatic measuring device and method for gaseous radioactive sources that can be remotely controlled. Background Technology

[0002] High-purity germanium detectors are primarily used to measure gamma rays and X-rays. Due to their high energy resolution, high detection efficiency, and wide energy detection range (from a few keV to several MeV), they are widely used in various physical measurements. In the measurement of gaseous radioactive sources, the intensity of their radioactivity is often unpredictable. Traditional laboratory methods involve artificially creating the source and then transferring it to the detector for measurement. This method has the following two problems:

[0003] (1) If the radiation source is too strong, it will cause strong radiation to the test personnel, and their personal safety cannot be guaranteed;

[0004] (2) If the range of the radioactive source is not suitable for the detector, it is necessary to manually recreate the source or take attenuation measures. The above process is too complicated and time-consuming, which is not conducive to the measurement of nuclides with short half-lives.

[0005] Therefore, there is an urgent need for a gaseous radiation source measuring device and method that can solve the above problems. Summary of the Invention

[0006] To address the technical problems of excessively strong radioactive sources causing severe radiation exposure to test personnel and compromising their safety, or the need for manual re-source generation or attenuation measures when the radioactive source is not suitable for the detector's range, resulting in low work efficiency, this invention provides a remotely controllable automatic gas radioactive source measurement device and method.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] An automatic gas radiation source measuring device capable of remote control is characterized by comprising a first detector, a second detector, a measuring platform, a source box fixing frame, a source box, a gas supply unit, a vacuum unit, a plug-in unit, and a remote control unit.

[0009] The detection ends of the first and second detectors are arranged opposite each other, the detector bodies of the two detectors are located on both sides of the measurement platform, and the detection arms of the two detectors are located above the measurement platform.

[0010] The source box mounting bracket is detachably connected between the detection ends of the first detector and the second detector;

[0011] The source box is installed inside the source box holder, with its two ends corresponding to the detection ends of the first detector and the second detector, respectively, and is used to fill the gas to be tested.

[0012] The gas supply unit is connected to the source box and is used to fill the source box with the gas to be tested.

[0013] The vacuum unit is connected to the source box and is used to evacuate the source box;

[0014] The plug-in unit is installed on the measurement platform, and its functional end can be plugged into the source box fixing frame and is compatible with the source box.

[0015] The remote control unit is connected to the first detector, the second detector, the gas supply unit, the vacuum unit, and the plug-in unit respectively, and is used to control the four to work in a timely manner.

[0016] Furthermore, the source box fixing frame includes a cylindrical fixing frame body and a fixing block;

[0017] The two ends of the fixed frame body are detachably connected to the detection ends of the first detector and the second detector, respectively. A first notch penetrating the inside and outside of the side wall is provided on one side wall, and a support boss is provided on the other side inner wall for supporting one side of the source box.

[0018] One end of the fixing block is detachably connected to the fixing frame body or the support boss, and the other end is suspended and corresponds to the support boss, used to support the other side of the source box, thereby fixing the source box between the support boss and the fixing block.

[0019] Furthermore, the measuring platform is provided with a long strip clearance hole whose length direction is perpendicular to the axis direction of the fixed frame body, and two support rods are provided on both sides of the long clearance hole, which are respectively perpendicularly connected to the measuring platform.

[0020] The plug-in unit includes a plug-in frame and a drive mechanism;

[0021] The connector frame includes a rotating rod, a first connector rod, two second connector rods, and two connector rings;

[0022] The rotating rod is rotatably connected between the two support rods;

[0023] One end of the first plug rod and one end of the two second plug rods are fixedly connected to the side wall of the rotating rod perpendicularly; the two second plug rods are distributed on the same generatrix of the rotating rod; the included angle between the first plug rod and the two second plug rods is greater than or equal to 60°; the other end of the first plug rod corresponds to the elongated clearance hole, so that when the rotating rod rotates, the other end of the first plug rod can be inserted into the elongated clearance hole.

[0024] The two plug-in rings are respectively installed at the other end of the two second plug-in rods. Their sidewalls are perpendicularly connected to the second plug-in rods, and their axes are on the same straight line. The distance between them matches the length between the two ends of the source box, and the distance between them matches the size of the first notch. This allows the two plug-in rings to enter the fixing frame body from the first notch and be located outside the two ends of the source box when the rotating rod rotates. The plug-in rings are used to install the absorption sheet.

[0025] The drive mechanism is mounted on the measuring platform and connected to the remote control unit to drive the rotating rod to rotate.

[0026] Furthermore, the drive mechanism includes a push rod motor and a slider;

[0027] The push rod motor is mounted on the measuring platform, and the axis of its output shaft is aligned with the length direction of the long strip clearance hole; the push rod motor is connected to the remote control unit.

[0028] The slider is slidably sleeved on the first plug rod and hinged to the actuating end of the push rod motor.

[0029] Furthermore, the source box is a hollow cylinder;

[0030] The support boss is an arc-shaped boss arranged circumferentially around the inner wall of the fixed frame body;

[0031] The fixing block is an L-shaped fixing block, one end of which is detachably connected to the arc-shaped end of the supporting boss.

[0032] Furthermore, the gas supply unit includes a gas source connected to the source box via a pipe, and a solenoid valve installed on the pipe;

[0033] The solenoid valve is fixed on the measuring platform and connected to the remote control unit.

[0034] Furthermore, the other end of the arc-shaped support boss is provided with a second notch that penetrates the inside and outside of the arc-shaped boss and the inside and outside of the corresponding fixing frame body sidewall, for accommodating the pipe;

[0035] The angle between the first connector and the two second connectors is 90°.

[0036] Furthermore, there are two plug-in units, located on both sides of the source box fixing frame;

[0037] The vacuum unit is a vacuum pump;

[0038] The gas supply unit and vacuum unit are connected to the source box via a four-way valve.

[0039] The first port of the four-way valve is connected to the source box, the second port is connected to the gas supply unit, the third port is connected to the vacuum pump, and a pressure display is installed at the fourth port.

[0040] Furthermore, the measuring platform is also equipped with at least two arc-shaped support frames;

[0041] At least two arc-shaped support frames are distributed at the bottom of the detection arms of the first and second detectors to support the two detection arms.

[0042] A remotely controllable automatic measurement method for a gas radioactive source, employing the aforementioned remotely controllable automatic measurement device for a gas radioactive source, is characterized by comprising the following steps:

[0043] Step 1: Install two absorber sheets of the same thickness onto the functional end of the plug-in unit;

[0044] Step 2: Control the vacuum unit to evacuate the source box via the remote control unit;

[0045] Step 3: Control the gas supply unit to fill the source box with the gas to be tested via the remote control unit;

[0046] Step 4: Control the plug-in unit to work through the remote control unit, so that its working end is plugged into the source box fixing frame, and the two absorption plates are respectively suspended between the source box and the detection end of the first detector and between the source box and the detection end of the second detector.

[0047] Step 5: Start the first and second detectors through the remote control unit to measure the gas to be measured and obtain the first and second detection information;

[0048] Step 6: Obtain the average of the first and second detection information to get the detection result of the gas to be tested.

[0049] The beneficial effects of this invention are:

[0050] 1. The present invention provides an automatic gas radiation source measurement device and method that can be remotely controlled. By setting up a source box fixing frame, a source box, a plug-in unit and a remote control unit, it realizes remote control measurement of the gas to be tested, reduces the radiation dose received by the test personnel and ensures personal safety.

[0051] 2. The present invention provides an automatic gas radiation source measurement device and method that can be remotely controlled. By driving the plug-in frame through the drive mechanism, the absorption plate installed on the two plug-in rings is suspended between the two detectors, thereby reducing the measurement count rate to reach the measurement range of the detector and ensuring that the detector can successfully obtain the detection results.

[0052] 3. The present invention provides an automatic gas radiation source measuring device and method that can be remotely controlled, which can replace the gas to be measured through a remote control unit, reducing the time cost of intermediate processes and greatly improving work efficiency. Attached Figure Description

[0053] Figure 1 This is one of the structural schematic diagrams of an embodiment of an automatic gas radiation source measuring device capable of remote control according to the present invention;

[0054] Figure 2 This is a second schematic diagram of an embodiment of an automatic gas radiation source measuring device capable of remote control according to the present invention;

[0055] Figure 3 This is a schematic diagram of the source box fixing frame and source box in an embodiment of the present invention;

[0056] Figure 4 This is a schematic diagram of the structure of the fixing frame body in an embodiment of the present invention (not shown);

[0057] Figure 5 This is a schematic diagram of the connection structure of the source box, solenoid valve, four-way valve and pressure display in an embodiment of the present invention;

[0058] Figure 6 This is a schematic diagram of the connection structure between the plug-in unit and other components in an embodiment of the present invention.

[0059] Icon labels:

[0060] 1-First detector, 2-Second detector, 3-Measuring platform, 31-Long strip clearance hole, 32-Support rod, 4-Source box fixing frame, 41-Fixing frame body, 411-First notch, 412-Support boss, 413-Second notch, 42-Fixing block, 5-Source box, 51-Pipe, 52-Solenoid valve, 53-Four-way valve, 531-First port, 532-Second port, 533-Third port, 534-Fourth port, 6-Plug-in unit, 61-Plug-in frame, 611-Rotating rod, 612-First plug-in rod, 613-Second plug-in rod, 614-Plug-in ring, 62-Drive mechanism, 621-Push rod motor, 7-Pressure display. Detailed Implementation

[0061] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings and embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0062] This invention provides an automatic gas radiation source measuring device capable of remote control, combined with... Figure 1 and Figure 2 As shown, it includes a first detector 1, a second detector 2, a measurement platform 3, a source box fixing frame 4, a source box 5, a gas supply unit, a vacuum unit, a plug-in unit 6, and a remote control unit.

[0063] The detection ends of the first detector 1 and the second detector 2 are set opposite each other, and their detector bodies are located on both sides of the measurement platform 3 and fixed to the ground. Their detection arms are located above the measurement platform 3.

[0064] The measurement platform 3 is provided with a long clearance strip hole 31. The length direction of the long clearance strip hole 31 is perpendicular to the axis direction of the fixing frame body 41 of the source box fixing frame 4. Two support rods 32 are provided on both sides of the long clearance strip hole 31, which are perpendicularly connected to the measurement platform 3 respectively. The measurement platform 3 is also provided with two arc-shaped support frames 8. The two arc-shaped support frames 8 are located at the bottom of the detection arms of the first detector 1 and the second detector 2 respectively, and are used to support the two detection arms. The position of the arc-shaped support frames 8 can be adjusted at any time according to the test conditions to prevent the first detector 1 and the second detector 2 from tilting forward.

[0065] Combination Figures 3 to 5 As shown, the source box 5 is a hollow cylinder. The source box 5 is installed inside the source box fixing frame 4, and its two ends correspond to the detection ends of the first detector 1 and the second detector 2, respectively, for filling the gas to be tested. The source box fixing frame 4 includes a cylindrical fixing frame body 41 and a fixing block 42. The two ends of the fixing frame body 41 are nested in the detection ends of the first detector 1 and the second detector 2, respectively, to achieve a detachable connection with the two. A first notch 411 penetrating the inside and outside of the side wall is provided on one side of the fixing frame body 41, and an arc-shaped support boss 412 is provided around its circumference on the other side inner wall for supporting one side of the circumferential side wall of the cylindrical source box 5. The fixing block 42 is an L-shaped fixing block. One end of the fixing block 42 is detachably connected to the fixing frame body 41 or the support boss 412 by screws. The other end of the fixing block 42 is suspended and corresponds to the support boss 412 for supporting the other side of the circumferential side wall of the cylindrical source box 5, thereby fixing the source box 5 between the support boss 412 and the fixing block 42. The other end of the arc-shaped support boss 412 is provided with a second notch 413 that penetrates the inside and outside of the arc-shaped boss and the inside and outside of the corresponding fixing frame body 41 side wall, for accommodating the pipe 51, which is a metal pipe.

[0066] The end of pipe 51 furthest from source box 5 is connected to the first port 531 of four-way 53. The gas supply unit is connected to source box 5 via the second port 532 of four-way 53, used to fill source box 5 with the gas to be tested; the gas supply unit includes a gas source and a solenoid valve 52. The gas source is connected to pipe 51 via the second port 532 of four-way 53, and thus to source box 5. The solenoid valve 52 is mounted on pipe 51 and fixed to the measuring platform 3. The vacuum unit is a vacuum pump, which is connected to source box 5 via the third port 533 of four-way 53, used to evacuate source box 5; a pressure display 7 is installed at the fourth port 534 of four-way 53.

[0067] like Figure 6 As shown, there are two plug-in units 6, located on both sides of the source box fixing frame 4 respectively; the plug-in unit 6 includes a plug-in frame 61 and a drive mechanism 62; the plug-in frame 61 includes a rotating rod 611, a first plug-in rod 612, two second plug-in rods 613 and two plug-in rings 614; the rotating rod 611 is rotatably connected between the two support rods 32; one end of the first plug-in rod 612 and the two second plug-in rods 613 are all vertically fixedly connected to the side wall of the rotating rod 611; the two second plug-in rods 613 are distributed on the same generatrix of the rotating rod 611; the included angle between the first plug-in rod 612 and the two second plug-in rods 613 is greater than or equal to 60°, preferably 90° in this embodiment; the first plug-in rod The other end of the first insertion rod 612 corresponds to the elongated clearance hole 31, so that when the rotating rod 611 rotates, the other end of the first insertion rod 612 can be inserted into the elongated clearance hole 31; two insertion rings 614 are respectively installed on the other ends of the two second insertion rods 613, the sidewalls of which are perpendicularly connected to the second insertion rods 613, and their axes are on the same straight line. The distance between them matches the length between the two ends of the source box 5 and the size of the first notch 411, so that when the rotating rod 611 rotates, it can drive the two insertion rings 614 to enter the fixing frame body 41 from the first notch 411 and be located outside the two ends of the source box 5; the insertion rings 614 are used to install the absorption sheet. The drive mechanism 62 includes a push rod motor 621 and a slider 622; the push rod motor 621 is mounted on the measuring platform 3 by screws, and its output shaft axis is aligned with the length direction of the elongated clearance hole 31.

[0068] The slider 622 is slidably sleeved on the first plug rod 612 and hinged to the working end of the push rod motor 621.

[0069] The remote control unit is connected to the first detector 1, the second detector 2, the solenoid valve 52, the gas source, the vacuum pump, and the two push rod motors 621 respectively, and is used to remotely control the corresponding components to work in a timely manner.

[0070] The specific usage process of this device is as follows:

[0071] Step 1: Install two absorber sheets of the same thickness on the working end of the same plug-in unit 6; for two different plug-in units 6, absorber sheets of different thicknesses can be selected according to different measurement requirements.

[0072] Step 2: Control the solenoid valve 52 and vacuum pump to evacuate the source box 5 through the remote control unit until the preset vacuum level is reached, then close the solenoid valve 52 and vacuum pump.

[0073] Step 3: Control the gas source and solenoid valve 52 to fill the source box 5 with the gas to be tested through the remote control unit, and judge the pressure of the gas to be tested to reach the preset value through the pressure display 7.

[0074] Step 4: Control the push rod motor 621 to work through the remote control unit, so that it pushes the rotating rod 611 to select the position, and drives the two plug rings 614 to be plugged into the source box fixing frame 4. The two absorption sheets of different thicknesses on the two plug rings 614 are respectively suspended between the source box 5 and the detection end of the first detector 1 and between the source box 5 and the detection end of the second detector 2.

[0075] Step 5: Start the first detector 1 and the second detector 2 through the remote control unit to measure the gas to be measured and obtain the first detection information and the second detection information;

[0076] Step 6: Obtain the average of the first and second detection information to get the detection result of the gas to be tested.

[0077] After the measurement is completed, turn on the push rod motor 621 switch, rotate the two plug rings 614 out of the source box fixing bracket 4, and at the same time turn on the vacuum pump switch and the solenoid valve switch to evacuate the source box 5, and repeat the new round of testing.

[0078] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions within the technical scope disclosed in the present invention should be covered within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. An automatic measuring device for a gas radiation source that can be remotely controlled, characterized in that: It includes a first detector (1), a second detector (2), a measurement platform (3), a source box mounting bracket (4), a source box (5), a gas supply unit, a vacuum unit, a plug-in unit (6), and a remote control unit; The detection ends of the first detector (1) and the second detector (2) are arranged opposite each other, the detector bodies of the two are located on both sides of the measurement platform (3), and the detection arms of the two are located above the measurement platform (3). The source box mounting bracket (4) is detachably connected between the detection ends of the first detector (1) and the second detector (2); The source box (5) is installed inside the source box fixing frame (4), and its two ends correspond to the detection ends of the first detector (1) and the second detector (2) respectively, and are used to fill the gas to be tested; The gas supply unit is connected to the source box (5) and is used to fill the source box (5) with the gas to be tested; The vacuum unit is connected to the source box (5) and is used to evacuate the source box (5); The plug-in unit (6) is installed on the measurement platform (3), and its working end can be plugged into the source box fixing frame (4) and adapted to the source box (5); The remote control unit is connected to the first detector (1), the second detector (2), the gas supply unit, the vacuum unit, and the plug-in unit (6) respectively, and is used to control the four to work in a timely manner.

2. The remotely controllable automatic gas radiation source measuring device according to claim 1, characterized in that: The source box fixing frame (4) includes a cylindrical fixing frame body (41) and a fixing block (42); The two ends of the fixed frame body (41) are detachably connected to the detection ends of the first detector (1) and the second detector (2), respectively. A first notch (411) penetrating the inside and outside of the side wall is provided on one side wall, and a support boss (412) is provided on the other side inner wall for supporting one side of the source box (5). One end of the fixing block (42) is detachably connected to the fixing frame body (41) or the support boss (412), and the other end is suspended and corresponds to the support boss (412) to support the other side of the source box (5), thereby fixing the source box (5) between the support boss (412) and the fixing block (42).

3. The remotely controllable automatic gas radiation source measuring device according to claim 2, characterized in that: The measuring platform (3) is provided with a long strip clearance hole (31) whose length direction is perpendicular to the axis of the fixed frame body (41). Two support rods (32) are provided on both sides of the long strip clearance hole (31) and are perpendicularly connected to the measuring platform (3). The plug-in unit (6) includes a plug-in bracket (61) and a drive mechanism (62); The connector frame (61) includes a rotating rod (611), a first connector rod (612), two second connector rods (613), and two connector rings (614); The rotating rod (611) is rotatably connected between two support rods (32); One end of the first plug rod (612) and the two second plug rods (613) are fixedly connected vertically to the side wall of the rotating rod (611); the two second plug rods (613) are distributed on the same generatrix of the rotating rod (611); the included angle between the first plug rod (612) and the two second plug rods (613) is greater than or equal to 60°; the other end of the first plug rod (612) corresponds to the elongated clearance hole (31), so that when the rotating rod (611) rotates, the other end of the first plug rod (612) can be inserted into the elongated clearance hole (31); The two insertion rings (614) are respectively installed at the other end of the two second insertion rods (613). The sidewalls of the two are perpendicularly connected to the second insertion rods (613), and their axes are on the same straight line. The distance between the two matches the length between the two ends of the source box (5) and matches the size of the first notch (411), so that when the rotating rod (611) rotates, it can drive the two insertion rings (614) to enter the fixing frame body (41) from the first notch (411) and be located outside the two ends of the source box (5); the insertion rings (614) are used to install the absorption sheet; The drive mechanism (62) is mounted on the measuring platform (3) and connected to the remote control unit to drive the rotating rod (611) to rotate.

4. The remotely controllable automatic gas radiation source measuring device according to claim 3, characterized in that: The drive mechanism (62) includes a push rod motor (621) and a slider (622); The push rod motor (621) is mounted on the measuring platform (3), and the direction of its output shaft axis is consistent with the length direction of the long strip clearance hole (31); the push rod motor (621) is connected to the remote control unit; The slider (622) is slidably sleeved on the first plug rod (612) and hinged to the working end of the push rod motor (621).

5. The remotely controllable automatic gas radiation source measuring device according to claim 4, characterized in that: The source box (5) is a hollow cylinder; The support boss (412) is an arc-shaped boss arranged circumferentially around the inner wall of the fixing frame body (41); The fixing block (42) is an L-shaped fixing block, one end of which is detachably connected to the arc-shaped end of the supporting boss (412).

6. The remotely controllable automatic gas radiation source measuring device according to claim 5, characterized in that: The gas supply unit includes a gas source connected to the source box (5) via a pipe (51), and a solenoid valve (52) installed on the pipe (51); The solenoid valve (52) is fixed on the measuring platform (3) and connected to the remote control unit.

7. The remotely controllable automatic gas radiation source measuring device according to claim 6, characterized in that: The other end of the arc of the support boss (412) is provided with a second notch (413) that penetrates the inside and outside of the arc-shaped boss and the inside and outside of the side wall of the corresponding fixing frame body (41) for accommodating the pipe (51); The angle between the first connector (612) and the two second connectors (613) is 90°.

8. The remotely controllable automatic gas radiation source measuring device according to any one of claims 1-7, characterized in that: There are two plug-in units (6), which are located on both sides of the source box fixing frame (4); The vacuum unit is a vacuum pump; The gas supply unit and vacuum unit are connected to the source box (5) via a four-way connector (53); The first port (531) of the four-way connector (53) is connected to the source box (5), its second port (532) is connected to the gas supply unit, its third port (533) is connected to the vacuum pump, and a pressure display (7) is provided at its fourth port (534).

9. The remotely controllable automatic gas radiation source measuring device according to claim 8, characterized in that: The measuring platform (3) is also equipped with at least two arc-shaped support frames (8); At least two arc-shaped support frames (8) are distributed at the bottom of the detection arms of the first detector (1) and the second detector (2) to support the two detection arms.

10. A remotely controllable automatic measurement method for a gaseous radioactive source, employing the remotely controllable automatic measurement device for a gaseous radioactive source as described in any one of claims 1-9, characterized in that, Includes the following steps: Step 1: Install two absorbent sheets of the same thickness onto the working end of the plug-in unit (6); Step 2: Control the vacuum unit to evacuate the source box (5) via the remote control unit; Step 3: Control the gas supply unit to fill the source box (5) with the gas to be tested via the remote control unit; Step 4: Control the plug-in unit (6) to work through the remote control unit, so that its working end is plugged into the source box fixing frame (4), and the two absorption plates are respectively suspended between the source box (5) and the detection end of the first detector (1) and between the source box (5) and the detection end of the second detector (2). Step 5: Start the first detector (1) and the second detector (2) through the remote control unit to measure the gas to be measured and obtain the first detection information and the second detection information; Step 6: Obtain the average of the first and second detection information to get the detection result of the gas to be tested.

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