Beta radiation monitoring device with anti-interference function

Abstract

The utility model discloses a beta radiation monitoring device with an anti-interference function, and belongs to the technical field of radiation detection. According to the beta radiation monitoring device with the anti-interference function, the inner sleeve is arranged, so that the detection assembly is easy to assemble, and the outer sleeve arranged outside the inner sleeve ensures that when the detection device encounters external impact, the outer sleeve is complete in the circumferential direction, and the inner sleeve in the detection device is not loosened due to the limitation of the outer sleeve; the problem that an existing detection device is unstable due to the fact that the structure is not firm is solved. The first step surface and the second step surface are arranged at the detection port of the gas chamber, the first step surface is used for supporting the first PIPS detector, and the second step surface is used for supporting the protective sleeve, so that the detector assembly can be stably supported by the gas chamber, and the stability of the detection device is further improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the radiation detection technical field, concretely relates to a beta radiation monitoring device with anti -interference function. BACKGROUND

[0002] In the radiation detection technical field, the detection of inert gas mainly concentrates in monitoring beta ray. However, in the process of detecting beta ray, often be interfered with by gamma ray. The interference resistance of the existing detection device to environmental gamma ray is weak, and often bulky, high cost, which limits their application in industrial field or mobile environment. In addition, the installation sleeve design of the existing detection device has the problem: they are single-layer structure, are made of two or more shell pieces and form a cylindrical shell, this design is convenient for assembly, but when being hit, the sleeve connecting place is easy to loosen, thereby making the structure of the detection device not enough stable.

[0003] In summary, the existing detection device has the problems of unstable structure, leading to unstable detection device. UTILITY MODEL CONTENTS

[0004] The utility model solves the technical problems in the prior art, provides a beta radiation monitoring device with anti -interference function, and has stable design structure and good detection performance.

[0005] To solve the above technical problems, the utility model adopts the technical scheme of:

[0006] A beta radiation monitoring device with anti -interference function, comprising a gas chamber and a detection assembly;

[0007] The gas chamber side is provided with an air inlet and an air outlet, and a detection port is formed in the upper cover of the gas chamber, and a first step surface and a second step surface are arranged at the detection port;

[0008] The detection assembly comprises a protective sleeve, a preamplifier plate, a first PIPS detector and a second PIPS detector, the protective sleeve is coaxially provided with the preamplifier plate, the second PIPS detector and the first PIPS detector from top to bottom, and the first PIPS detector partially extends out of the protective sleeve;

[0009] The vertical distance between the first step surface and the second step surface is equal to the length of the first PIPS detector extending out of the protective sleeve, the first step surface is used for supporting the first PIPS detector, and the second step surface is used for supporting the protective sleeve;

[0010] The protective sleeve comprises an inner sleeve and an outer sleeve arranged outside the inner sleeve; an inner wall of the inner sleeve is provided with a first annular mounting groove, a second annular mounting groove and an L-shaped structure mounting groove from top to bottom, respectively used for mounting a preamplifier board, a second PIPS detector and a first PIPS detector; the inner sleeve is composed of two half-cylinder shells; the outer sleeve is provided with a detector upper cover plate at an upper end thereof, and is provided with an annular step surface for supporting the detector upper cover plate at the upper end.

[0011] Further, an installation window is arranged on the inner sleeve for adjusting the installation position of the preamplifier board in the inner sleeve.

[0012] Further, an annular sealing gasket is arranged between the inner sleeve and the outer sleeve.

[0013] Further, a detector end cover is arranged above the detector upper cover plate, and an inner diameter of the detector end cover is equal to an outer diameter of the outer sleeve.

[0014] Further, the gas inlet and the gas outlet are respectively arranged at two sides of the gas chamber.

[0015] Further, an adapter is embedded on the detector upper cover plate, two interfaces of the adapter are respectively arranged above and below the detector upper cover plate, and the interface below is used for connecting with a signal line of the preamplifier board.

[0016] Further, the gas chamber and the detection assembly are arranged in a lead barrel.

[0017] Further, a movable vehicle frame is further included, and the lead barrel is arranged on the vehicle frame.

[0018] Further, a sampling pump is arranged on the vehicle frame and used for communicating with the gas inlet and the gas outlet of the gas chamber.

[0019] Further, an on-site processor is further arranged on the vehicle frame, and an input end of the on-site processor is connected with the interface above the detector upper cover plate.

[0020] Compared with the prior art, the utility model has the following advantages:

[0021] The utility model discloses a beta radiation monitoring device with anti -interference function through setting the inner sleeve makes the detection subassembly easy to assemble, through setting the outer sleeve of inner sleeve outside guarantee detection device when meeting external impact, because the outer sleeve circumferential is complete, the inner sleeve of inside is limited due to the outer sleeve, will not appear the condition of slackening, the problem of the existing detection device not firm structure leads to the detection device unstable is solved. Through being provided with first step surface and second step surface at the detection port of the air chamber, first step surface is used for supporting first PIPS detector, and second step surface is used for supporting protection sleeve, so as to guarantee that the detector subassembly can be stably supported by the air chamber, further improve the stability of detection device. By placing a PIPS detector on the coaxial shaft of the PIPS detector of measuring beta and gamma ray again, and through difference operation, the influence of environmental gamma ray is reduced significantly, and the measurement accuracy is improved.

[0022] The technical scheme of the utility model will be described in further detail below with the drawings and examples. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is the structure schematic drawing of air chamber and detection subassembly of the beta radiation monitoring device with anti -interference function of the utility model embodiment;

[0024] Figure 2 It is the protection sleeve structure schematic drawing of not installing front board and PIPS detector of the beta radiation monitoring device with anti -interference function of the utility model embodiment;

[0025] Figure 3 It is the structure schematic drawing of air chamber of the beta radiation monitoring device with anti -interference function of the utility model embodiment;

[0026] Figure 4 It is the whole structure schematic drawing of the beta radiation monitoring device with anti -interference function of the utility model embodiment;

[0027] BRIEF DESCRIPTION OF DRAWINGS

[0028] 1, air chamber;11, inlet;12, outlet;13, detection port;14, first step surface;15, second step surface;

[0029] 2, front board;3, first PIPS detector;4, second PIPS detector;

[0030] 5, protection sleeve;51, inner sleeve;511, first annular mounting groove;512, second annular mounting groove;513, L-shaped structure mounting groove;514, mounting window;

[0031] 52, outer sleeve;521, annular step surface;522, detector upper cover plate;523, conversion head;53, annular sealing gasket;

[0032] 6. Detector end cover; 7. Lead barrel; 8. Frame; 9. Sampling pump; 10. On-site processor. DETAILED DESCRIPTION

[0033] Example of a beta radiation monitoring device with anti-interference function:

[0034] like Figure 1 As shown, the beta radiation monitoring device with anti-interference function includes a gas chamber 1 and a detection component.

[0035] In order to facilitate the air chamber 1 to support the detection assembly, such as Figure 3 As shown, an air inlet 11 and an air outlet 12 are provided on the side of the air chamber 1 , a detection port 13 is provided in the upper cover of the air chamber 1 , and a first step surface 14 and a second step surface 15 are provided at the detection port 13 .

[0036] In order to reduce the impact of environmental γ rays and improve the detection accuracy based on β rays, such as Figure 2 As shown, the detection assembly includes a protective sleeve 5, a front amplifier board 2, a first PIPS detector (passivated ion implanted planar silicon detector) 3, and a second PIPS detector 4. The protective sleeve 5 is coaxially arranged with the front amplifier board 2, the second PIPS detector 4, and the first PIPS detector 3 from top to bottom. The model of the front amplifier board 2 is P0014-E00AA22_CAM-MCA, and the detector model is CAM475.

[0037] To facilitate detection of inert gas within the gas chamber 1 by the first PIPS detector 3, the first PIPS detector 3 partially extends out of the protective sleeve 5. To ensure that the gas chamber 1 can stably support the detection assembly, the vertical distance between the first step surface 14 and the second step surface 15 is equal to the length of the first PIPS detector 3 extending out of the protective sleeve 5. The first step surface 14 supports the first PIPS detector 3, and the second step surface 15 supports the protective sleeve 5.

[0038] In order to improve the stability of the detection component and its ability to resist external forces, such as Figure 2As shown, the protective sleeve 5 includes an inner sleeve 51 and an outer sleeve 52 arranged outside the inner sleeve 51. In order to facilitate the installation of the preamplifier board 2, the second PIPS detector 4 and the first PIPS detector 3, the inner wall of the inner sleeve 51 is provided with a first annular mounting groove 511, a second annular mounting groove 512 and an L-shaped mounting groove 513 from top to bottom, respectively used for mounting the preamplifier board 2, the second PIPS detector 4 and the first PIPS detector 3. The L-shaped mounting groove 513 is arranged to facilitate the extension of the first PIPS detector 3. The inner sleeve 51 is composed of two half-cylindrical shells. The outer sleeve 52 is provided with a detector upper cover plate 522 at the upper end, and an annular stepped surface 521 for supporting the detector upper cover plate 522. By using the second PIPS detector 4 and the first PIPS detector 3, the lower limit of detection for inert gas measurement is reduced, and the detection capability for low-activity gas is improved. The inner sleeve 51 is made of metal, the outer sleeve 52 is made of plastic, and the gas chamber 1 is made of stainless steel.

[0039] In order to improve the stability of the protective sleeve 5, an annular sealing gasket 53 is arranged between the inner sleeve 51 and the outer sleeve 52 to isolate the inner sleeve 51 from the outer sleeve 52 and prevent some substances in the inner sleeve from corroding the outer sleeve 52.

[0040] In order to facilitate observation of the assembly of the detection assembly, the inner sleeve 51 is provided with a mounting window 514 for adjusting the installation position of the preamplifier board 2 in the inner sleeve 51.

[0041] In order to better realize the packaging of the inside of the protective sleeve 5, a detector end cover 6 is arranged above the detector upper cover plate 522. The inner diameter of the detector end cover 6 is equal to the outer diameter of the outer sleeve 52, that is, the detector end cover 6 can just cover the upper end of the outer sleeve 52, covering the gap between the detector upper cover plate 522 and the outer sleeve 52.

[0042] In order to improve the flow capacity of the gas in the gas chamber 1, the gas inlet 11 and the gas outlet 12 are respectively located on both sides of the gas chamber 1.

[0043] In order to facilitate the extension of the signal line of the preamplifier board 2, a connector is embedded in the detector upper cover plate 522. The two interfaces of the connector are respectively located above and below the detector upper cover plate 522. The lower interface is used for connecting with the signal line of the preamplifier board 2.

[0044] As shown in Figure 4 In order to reduce interference, the gas chamber 1 and the detection assembly are arranged in a lead barrel 7.

[0045] In order to enhance portability, a movable frame 8 is further included. The lead barrel 7 is arranged on the frame 8, facilitating the rapid deployment of the detection device in different environments.

[0046] Convenience of operation: the sampling pump 9 and the on-site processor 10 are integrated in the device, which makes the gas sampling and data processing more convenient and improves the efficiency of the whole detection process. The sampling pump 9 is arranged on the frame 8 and is in communication with the gas inlet 11 and the gas outlet 12 of the gas chamber 1. The on-site processor 10 is also arranged on the frame 8, and the input end of the on-site processor 10 is connected with the interface above the cover plate 522 of the detector. The model of the on-site processor 10 is M-2066.

[0047] The above is only a preferred embodiment of the present application, and does not limit the present application. Any simple modification, change and equivalent structure change of the above embodiment according to the technical essence of the present application still belongs to the protection scope of the technical scheme of the present application.

Claims

1. A beta radiation monitoring device with anti-interference function, characterized in that: The utility model relates to a kind of gas chamber and detection assembly. Gas chamber (1) is provided with air inlet (11) and air outlet (12) on side, and detection port (13) is provided in the upper cover of gas chamber (1), and first step surface (14) and second step surface (15) are arranged at detection port (13). Detection assembly includes protective sleeve (5), front board (2), first PIPS detector (3), second PIPS detector (4), and protective sleeve (5) is coaxially provided with front board (2), second PIPS detector (4) and first PIPS detector (3) from top to bottom, and first PIPS detector (3) partially extends protective sleeve (5). The vertical distance between first step surface (14) and second step surface (15) is equal to the length of first PIPS detector (3) extending protective sleeve (5), and first step surface (14) is used to support first PIPS detector (3), and second step surface (15) is used to support protective sleeve (5). Protective sleeve (5) includes inner sleeve (51) and outer sleeve (52) arranged outside inner sleeve (51), and the inner wall of inner sleeve (51) is provided with first annular mounting groove (511), second annular mounting groove (512) and L-shaped structure mounting groove (513) from top to bottom, respectively used for mounting front board (2), second PIPS detector (4) and first PIPS detector (3), and inner sleeve (51) is composed of two half-cylinder shells, and the upper end of outer sleeve (52) is provided with detector upper cover plate (522), and the upper end of outer sleeve (52) is provided with annular step surface (521) used for supporting detector upper cover plate (522).

2. The beta radiation monitoring device with anti-interference function according to claim 1, characterized in that: Mounting window (514) is provided on inner sleeve (51) for adjusting the mounting position of front board (2) in inner sleeve (51).

3. The beta radiation monitoring device with anti-interference function according to claim 1, characterized in that: Annular sealing gasket (523) is arranged between inner sleeve (51) and outer sleeve (52).

4. The β radiation monitoring device having an anti-interference function according to claim 1, characterized in that: The upper side of detector upper cover plate (522) is provided with detector end cover (6), and the inner diameter of detector end cover (6) is equal to the outer diameter of outer sleeve (52).

5. The β radiation monitoring device having an anti-interference function according to claim 1, characterized in that: Air inlet (11) and air outlet (12) are respectively located on both sides of gas chamber (1).

6. The β radiation monitoring device having an anti-interference function according to claim 1, characterized in that: Adapter is embedded on detector upper cover plate (522), and two interfaces of adapter are respectively located above and below detector upper cover plate (522), and the lower interface is used for connecting with signal line of front board (2).

7. A beta radiation monitoring device with anti-interference function according to claim 6, characterized in that: Gas chamber (1) and detection assembly are arranged in lead barrel (7).

8. A beta radiation monitoring device with anti-interference function according to claim 7, characterized in that: Movable vehicle frame (8) is further included, and lead barrel (7) is arranged on vehicle frame (8).

9. A beta radiation monitoring device having an anti-interference function according to claim 8, characterized in that: Sampling pump (9) is arranged on vehicle frame (8) for communicating with air inlet (11) and air outlet (12) of gas chamber (1).

10. The beta radiation monitoring device having an anti-interference function according to claim 8, characterized in that: In-situ processor (10) is further arranged on vehicle frame (8), and the input end of in-situ processor (10) is connected with the interface above detector upper cover plate (522).

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