Membrane window assembly, wrench and alpha and beta ray gas detector

Abstract

The utility model discloses a film window assembly, a wrench and an alpha and beta ray gas detector, and relates to the technical field of alpha and beta ray detection, the film window assembly comprises a film and a main body; the main body is detachably arranged at a window of the gas box, the main body is annular, an inner hole of the main body directly faces the window of the gas box, the thin film is arranged on the main body and seals the inner hole of the main body, and an integral structure formed by the thin film and the main body can seal the window of the gas box. The membrane window assembly is independent of the air box, can be installed at the window of the air box and can also be detached from the window of the air box, so that a plurality of membrane window assemblies can be additionally prepared to serve as spare parts, and when a membrane in the membrane window assembly in use is damaged, the membrane window assembly can be integrally replaced. Therefore, the purpose of quickly replacing the film is achieved, the film replacement time is shortened, the loss of gas in the gas box is reduced, and the detection efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to alpha, beta ray detection technical field, especially a membrane window subassembly, spanner and alpha, beta ray gas detector. BACKGROUND

[0002] Based on the two reasons of the technical requirement of low background alpha, beta ray gas detector and the extremely weak penetration of alpha particles, in order to reduce the energy loss of alpha particles through the airtight shell, the thickness of the film in the membrane window subassembly is required to be about 2-3um, which is extremely fragile, and the distance between the measured sample and the film is not more than 3mm, which leads to a high probability of damage to the film during actual use of the instrument. The existing membrane window subassembly is generally designed in an integrated manner with the airtight gas box, which leads to the need to remove the entire detector module from the airtight shell and open the entire airtight shell cover when the film in the membrane window subassembly is damaged, and then replace the film and reassemble, which takes a very long time. Since the gas detector is very sensitive to gas components, the replacement of the film for too long time leads to the need to reflow the gas for a certain period of time to ensure the gas components after replacement. Thus, the instrument cannot work normally within a certain period of time. SUMMARY

[0003] The utility model discloses a membrane window subassembly, spanner and alpha, beta ray gas detector, to solve the problem of the prior art, improve the detection efficiency.

[0004] To achieve the above object, the utility model provides the following scheme:

[0005] The utility model provides a membrane window subassembly, which comprises a film and a main body, the main body is detachably arranged at the window of a gas box, the main body is annular, the inner hole of the main body is opposite to the window of the gas box, the film is arranged on the main body and closes the inner hole of the main body, and the overall structure formed by the film and the main body can close the window of the gas box.

[0006] Preferably, the utility model further comprises a pressing ring, the pressing ring is annular, the inner hole of the pressing ring is opposite to the inner hole of the main body, the film is arranged between the pressing ring and the main body, the pressing ring is detachably connected to the main body, and the pressing ring can press the film on the main body in the state of being connected to the main body.

[0007] Preferably, the circumferential edge of the film is bonded to the side of the pressing ring facing the main body.

[0008] Preferably, the utility model further comprises a fixing ring, the fixing ring is annular, the fixing ring is detachably connected to the main body, and the fixing ring can press and fix the pressing ring on the main body in the state of being installed on the main body.

[0009] Preferably, the outer wall of the main body is a cylindrical surface, the outer wall of the main body is provided with a thread, and the main body is threadedly connected to the gas cartridge.

[0010] Preferably, in the state that the membrane window assembly is mounted on the gas cartridge, the main body and the fixing ring do not protrude out of the outer surface of the gas cartridge, the front surface of the main body or the fixing ring is provided with a plurality of holes extending along the thickness direction, and the plurality of holes are sequentially arranged along the circumferential direction of the main body or the fixing ring.

[0011] Preferably, three sealing rings are further included, one of the sealing rings is arranged between the main body and the gas cartridge, one of the sealing rings is arranged between the pressing ring and the main body, and one of the sealing rings is arranged between the fixing ring and the main body, and the window is located in the cylindrical surface of each of the sealing rings.

[0012] The utility model also provides a spanner for disassembling the membrane window assembly, which comprises a supporting part and a force transmission column, the force transmission column is fixed to the supporting part, the number of the force transmission column is the same as the number of the holes, the force transmission column is used for being inserted into the hole, and the supporting part is used for transmitting external torque to the force transmission column and rotating the membrane window assembly by the force transmission column.

[0013] Preferably, the supporting part comprises a circular ring supporting piece and a cross-shaped cross rod arranged in the circular ring supporting piece, and four ends of the cross-shaped cross rod are fixedly connected with the inner wall of the circular ring supporting piece.

[0014] The utility model also provides an alpha, beta ray gas detector, which comprises a gas cartridge, a detection module and a plurality of membrane window assemblies.

[0015] Compared with the prior art, the utility model has the following technical effects:

[0016] The membrane window assembly is independent of the gas cartridge and can be mounted on the window of the gas cartridge or dismounted from the window of the gas cartridge, so that a plurality of membrane window assemblies can be prepared as spare parts, the membrane window assembly can be replaced as a whole when the film in the membrane window assembly is damaged, the film can be quickly replaced, the film replacement time is reduced, the gas loss in the gas cartridge is reduced, and the detection efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained by those skilled in the art without creative labor on the basis of the drawings.

[0018] Figure 1 A schematic diagram of the structure of the α and β ray gas detector provided in an embodiment of this utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the membrane window assembly provided in an embodiment of the present utility model;

[0020] Figure 3 for Figure 2 Exploded view of the structure excluding the sealing ring;

[0021] Figure 4 for Figure 2 A schematic diagram of the structure of the three sealing rings;

[0022] Figure 5 for Figure 1 Schematic diagram of the middle gas box;

[0023] Figure 6 A schematic diagram of the structure of the wrench provided in the embodiment of this utility model;

[0024] Figure 7 A cross-sectional view of the membrane window assembly provided in an embodiment of this utility model;

[0025] Figure 8 for Figure 7 Enlarged view of the structure at point A in the middle;

[0026] In the diagram: 1-Air box; 2-Membrane window assembly; 3-Main body; 4-Fixing ring; 5-Membrane; 6-Pressure ring; 7-Sealing ring; 8-Window; 9-Circular ring support; 10-Cross rod; 11-Force transmission column; 12-Hole. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0029] The following is combined with Figures 1 to 8 The following describes embodiments of the present invention.

[0030] This utility model provides a membrane window assembly 2, such as Figures 2 to 5 , Figures 7 to 8As shown, it comprises: a film 5 and a main body 3; the main body 3 is detachably arranged at the window 8 of the gas cartridge 1, the main body 3 is annular, the inner hole of the main body 3 is opposite to the window 8 of the gas cartridge 1, the film 5 is arranged on the main body 3 and closes the inner hole of the main body 3, and the whole structure formed by the film 5 and the main body 3 can close the window 8 of the gas cartridge 1.

[0031] The film window assembly 2 provided by the utility model is independent of the gas cartridge 1, can be installed at the window 8 of the gas cartridge 1 and can be detached from the window 8 of the gas cartridge 1, so that a plurality of film window assemblies 2 can be additionally prepared as spare parts, when the film 5 in the film window assembly 2 in use is damaged, the film window assembly 2 can be replaced as a whole, the purpose of quickly replacing the film 5 is achieved, the film 5 replacement time is reduced, the gas loss in the gas cartridge 1 is reduced, and the detection efficiency is improved.

[0032] In some embodiments, the utility model further comprises a pressing ring 6, the pressing ring 6 is annular, the inner hole of the pressing ring 6 is opposite to the inner hole of the main body 3, the film 5 is arranged between the pressing ring 6 and the main body 3, the pressing ring 6 is detachably connected to the main body 3, and the pressing ring 6 can press the film 5 on the main body 3 in the state of being connected to the main body 3.

[0033] The film 5 is pressed and fixed on the main body 3 by the pressing ring 6 in this embodiment.

[0034] In some embodiments, the circumferential edge of the film 5 is bonded to the side of the pressing ring 6 facing the main body 3.

[0035] This embodiment further improves the stability of the film 5 in the fixed state. In addition, the film 5 and the pressing ring 6 are arranged as an independent assembly in the present application, so that a plurality of pressing rings 6 and films 5 can be additionally prepared, and only a small amount of main bodies 3 need to be prepared, for example, three main bodies 3, 10 pressing rings 6 and films 5, so that when a damaged film window assembly 2 is replaced and a new film window assembly 2 is replaced, the film 5 in the damaged film window assembly 2 can be quickly replaced, so that it is not necessary to prepare too many film window assembly 2 whole structures, the cost is saved, and the space occupied by the idle film window assembly 2 is reduced.

[0036] In some embodiments, the utility model further comprises a fixing ring 4; the fixing ring 4 is annular, the fixing ring 4 is detachably connected to the main body 3, specifically, the fixing ring 4 is fixed to the main body 3 through a plurality of bolts, the fixing ring 4 is arranged on the main body 3 and presses and fixes the pressing ring 6 on the main body 3, specifically, the structure close to the inner side of the fixing ring 4 is pressed on the pressing ring 6.

[0037] The pressing ring 6 is detachably connected to the main body 3 in this embodiment.

[0038] In some embodiments, the outer wall of the main body 3 is cylindrical, and the outer wall of the main body 3 is provided with threads, and the main body 3 is threadedly connected to the air box 1. It can be understood that the corresponding part of the air box 1 is provided with internal threads.

[0039] This embodiment facilitates the quick connection of the main body 3 to the main body 3.

[0040] In some embodiments, when the membrane window assembly 2 is installed on the air box 1, the main body 3 and the fixing ring 4 do not protrude from the outer surface of the air box 1. The front of the main body 3 or the fixing ring 4 is provided with a plurality of holes 12 extending along the thickness direction, and the plurality of holes 12 are arranged sequentially along the circumference of the main body 3 or the fixing ring 4.

[0041] This embodiment makes the overall structure of the gas detector neat and without any extra protrusions. The hole 12 is designed to be used with the wrench in the following embodiment. The specific usage process is described in the following wrench embodiment.

[0042] In some embodiments, the present invention further includes three sealing rings 7, one between the main body 3 and the air box 1, one between the pressure ring 6 and the main body 3, and one between the fixing ring 4 and the main body 3, with the window 8 located within the cylindrical surface of each sealing ring 7.

[0043] This embodiment ensures the airtightness of the air box 1 and avoids reducing the airtightness of the air box 1 due to the independent setting of the membrane window assembly 2.

[0044] like Figure 6 As shown, this utility model also provides a wrench for disassembling and assembling the membrane window assembly 2 as described above, including: a support part and a force transmission column 11. The force transmission column 11 is fixed on the support part. The number of force transmission columns 11 is the same as the number of holes 12. The force transmission column 11 is used to insert into the hole 12. The support part is used to transmit external torque to the force transmission column 11 and make the force transmission column 11 drive the membrane window assembly 2 to rotate.

[0045] The wrench provided in this embodiment is used to disassemble and install the membrane window assembly 2 as described above. Specifically, when disassembling the damaged membrane window assembly 2, each force transmission column 11 is aligned with each hole 12 and inserted into the hole 12. Then, the wrench is held by hand or mechanically clamped and turned. During the turning process, the wrench drives the membrane window assembly 2 to rotate and achieve disassembly. When installing a new membrane window assembly 2, each force transmission column 11 is aligned with each hole 12 and inserted into the hole 12. Then, the wrench is held by hand or mechanically clamped and turned in the opposite direction. During the turning process, the wrench drives the membrane window assembly 2 to rotate and achieve installation.

[0046] In some embodiments, the support includes a circular support member 9 and a crossbar 10 disposed in the circular support member 9, with all four ends of the crossbar 10 fixedly connected to the inner wall of the circular support member 9.

[0047] The cross-shaped rod 10 in the embodiment is convenient for manual holding.

[0048] As Figure 1 Each Figure 5 As shown in the drawings, the utility model still provides a kind of alpha, beta ray gas detector, it include: gas box 1, detection module and multiple film window assemblies 2 as described above.

[0049] The embodiment has all the advantages of the above-described embodiments, which will not be repeated here, and it should be noted that the detection assembly is arranged in the gas box 1, and the gas box 1 is provided with an inlet for injecting the required gas into the gas box 1.

[0050] The principle and implementation mode of the specific examples are described in the utility model, and the above embodiment is only used to help understand the method and core idea of the utility model; meanwhile, for the general technical personnel in the field, according to the idea of the utility model, the specific implementation mode and application range will be changed. In conclusion, the content of the specification should not be understood as a limitation of the utility model.

Claims

1. A fenestration assembly, characterized by: The film and the main body; the main body is detachably arranged at the window of the gas cartridge, the main body is annular, the inner hole of the main body is opposite to the window of the gas cartridge, the film is arranged on the main body and closes the inner hole of the main body, and the whole structure formed by the film and the main body can close the window of the gas cartridge. Further comprising a pressing ring, the pressing ring is annular, the inner hole of the pressing ring is opposite to the inner hole of the main body, the film is arranged between the pressing ring and the main body, the pressing ring is detachably connected to the main body, and the pressing ring can press the film on the main body in the state of being connected to the main body.

2. The fenestration assembly of claim 1, wherein: The circumferential edge of the film is bonded to the side of the pressing ring facing the main body.

3. The fenestration assembly of claim 2, wherein: Further comprising a fixing ring; the fixing ring is annular, the fixing ring is detachably connected to the main body, and the fixing ring can press and fix the pressing ring on the main body in the state of being installed on the main body.

4. The fenestration assembly of claim 2, wherein: The outer wall of the main body is a cylindrical surface, the outer wall of the main body is provided with threads, and the main body is screw-connected to the gas cartridge.

5. The fenestration assembly of claim 1, wherein: In the state that the film window assembly is installed on the gas cartridge, the main body and the fixing ring do not protrude out of the outer surface of the gas cartridge, the front surface of the main body or the fixing ring is provided with a plurality of holes extending along the thickness direction, and the plurality of holes are sequentially arranged along the circumference of the main body or the fixing ring.

6. The fenestration assembly of claim 4, wherein: Further comprising three sealing rings, one of the sealing rings is arranged between the main body and the gas cartridge, between the pressing ring and the main body, and between the fixing ring and the main body, and the window is located in the cylindrical surface of each sealing ring.

7. The fenestration assembly of claim 4, wherein: The support part and the force transmission column, the force transmission column is fixed on the support part, the number of the force transmission column is the same as the number of the hole, the force transmission column is used for inserting into the hole, and the support part is used for transmitting external torque to the force transmission column and making the force transmission column drive the film window assembly to rotate.

8. A spanner for disassembling the membrane window assembly of claim 6, characterized in that: The support part comprises a circular ring support and a cross-shaped cross rod arranged in the circular ring support, and four ends of the cross-shaped cross rod are fixedly connected with the inner wall of the circular ring support. The gas cartridge, the detection module and a plurality of film window assemblies according to any one of claims 1-7.

9. The wrench of claim 8, wherein: ​ 10. An α, β-ray gas detector, characterized by: ​ ​

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