CN112068186A - Beta/internal conversion electronic vacuum measuring device - Google Patents
Beta/internal conversion electronic vacuum measuring device Download PDFInfo
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- CN112068186A CN112068186A CN202010685155.9A CN202010685155A CN112068186A CN 112068186 A CN112068186 A CN 112068186A CN 202010685155 A CN202010685155 A CN 202010685155A CN 112068186 A CN112068186 A CN 112068186A
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- 238000006243 chemical reaction Methods 0.000 title claims abstract description 30
- 238000007789 sealing Methods 0.000 claims abstract description 68
- 239000000523 sample Substances 0.000 claims abstract description 31
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 27
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 27
- 239000010703 silicon Substances 0.000 claims abstract description 27
- 125000006850 spacer group Chemical group 0.000 claims abstract description 19
- 239000004519 grease Substances 0.000 claims description 19
- 229920001296 polysiloxane Polymers 0.000 claims description 19
- 229920001971 elastomer Polymers 0.000 claims description 17
- 239000005060 rubber Substances 0.000 claims description 17
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims description 4
- 239000010935 stainless steel Substances 0.000 claims description 4
- 229920000459 Nitrile rubber Polymers 0.000 claims description 3
- NTXGQCSETZTARF-UHFFFAOYSA-N buta-1,3-diene;prop-2-enenitrile Chemical compound C=CC=C.C=CC#N NTXGQCSETZTARF-UHFFFAOYSA-N 0.000 claims description 3
- 238000005259 measurement Methods 0.000 abstract description 20
- 238000001228 spectrum Methods 0.000 abstract description 9
- 239000002245 particle Substances 0.000 abstract description 8
- 238000013461 design Methods 0.000 abstract description 5
- 238000010521 absorption reaction Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 3
- 230000002285 radioactive effect Effects 0.000 description 3
- 239000000941 radioactive substance Substances 0.000 description 3
- 210000003323 beak Anatomy 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000005062 Polybutadiene Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005255 beta decay Effects 0.000 description 1
- UYUVKZAPFCQDSQ-UHFFFAOYSA-N buta-1,3-diene oxalonitrile Chemical compound C=CC=C.N#CC#N UYUVKZAPFCQDSQ-UHFFFAOYSA-N 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000010835 comparative analysis Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001941 electron spectroscopy Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 229920002857 polybutadiene Polymers 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
- 229920002545 silicone oil Polymers 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T1/00—Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
- G01T1/36—Measuring spectral distribution of X-rays or of nuclear radiation spectrometry
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- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- High Energy & Nuclear Physics (AREA)
- Molecular Biology (AREA)
- Measurement Of Radiation (AREA)
Abstract
The invention discloses a beta/internal conversion electronic vacuum measuring device, which relates to the technical field of energy spectrum measurement and comprises an SDD detector and a tank body, wherein a fastening pressing cap is sleeved on an X-ray silicon drift probe of the SDD detector, a first O-shaped sealing ring and a spacer ring are sleeved on the X-ray silicon drift probe of the SDD detector, a cavity is arranged in the tank body, a through hole is formed in the middle of the top of the tank body, a tubular tank opening which is hermetically communicated with the through hole is fixedly arranged on the through hole, air holes are symmetrically formed in the top of the tank body, a Swagelok quick plug is arranged in each air hole, and a second O-shaped sealing ring is fixedly connected to the outer edge of the bottom of the tank body. The invention realizes the windowless sealing design between the sample to be detected and the SDD detector, avoids the attenuation or absorption of air or other media to beta particles/internal conversion electrons, adopts the mode of pressing a plurality of layers of spacing rings and O-shaped sealing rings by a fastening pressure cap, and obviously improves the vacuum sealing performance of the device.
Description
Technical Field
The invention relates to the technical field of energy spectrum measurement (the field of radioactivity measurement), in particular to a beta/internal conversion electronic vacuum measuring device.
Background
Beta/internal conversion electron spectroscopy is an important part of nuclear radiation measurement. For the radioactive nuclide with larger internal conversion coefficient or pure beta decay, or when the realization difficulty of measurement by adopting a gamma energy spectrum method is larger (such as field observation), the beta/internal conversion electronic energy spectrum measurement is a good alternative method. The beta/internal conversion electron spectrum measuring method has the advantages that: thick shielding is not needed; the internal conversion electron has obvious characteristic peak; low energy background interference is very small. The beta/internal conversion electrons are charged particles, are easy to interact with air or other media, have short range and obviously reduce the measurement efficiency, so a vacuum measurement environment needs to be constructed between a sample to be measured and a Silicon Drift Detector (SDD/Silicon Drift Detector).
However, the comparative analysis of related documents shows that the device research and the manufacturer with the same structure as the invention have no literature report. In the prior art, most beta/internal conversion electronic measuring devices cannot solve the vacuum measurement problem of beta/internal conversion electrons and cannot realize the windowless sealing design between a sample to be measured and an SDD detector.
Disclosure of Invention
The present invention is directed to a β/inner switching electron vacuum measurement device to solve the above-mentioned problems of the prior art.
In order to achieve the purpose, the invention provides the following technical scheme: a beta/internal conversion electronic vacuum measuring device comprises an SDD detector and a tank body, wherein a fastening pressure cap is sleeved on an X-ray silicon drift probe of the SDD detector, a first O-shaped sealing ring and a spacer ring are sleeved on the X-ray silicon drift probe of the SDD detector, a cavity is arranged in the tank body, a through hole is formed in the middle of the top of the tank body, a tubular tank opening which is communicated with the through hole in a sealing mode is fixedly arranged on the through hole, an air inlet hole and an air outlet hole are symmetrically formed in the top of the tank body relative to the tubular tank opening, Swagelok quick connectors are respectively arranged in the air inlet hole and the air outlet hole, a second O-shaped sealing ring is fixedly connected to the outer edge of the bottom of the tank body, a tank cover is arranged below the tank body, and an annular groove.
As a further scheme of the invention: the outer surface of the lower side of the X-ray silicon drift probe of the SDD detector is provided with threads, the inner wall of the through hole is provided with threads matched with the SDD detector, the SDD detector is matched with the through hole, the bottom of the through hole is communicated with the top of the cavity, and vacuum silicone grease is uniformly coated on the first O-shaped sealing ring.
As a still further scheme of the invention: the outer surface of the Swagelok quick connector is provided with threads, the inner walls of the air inlet hole and the air outlet hole are respectively provided with threads matched with the Swagelok quick connector, the air inlet hole and the air outlet hole are respectively matched with the Swagelok quick connector, a rubber gasket covers the upper end of each thread of the Swagelok quick connector, vacuum silicone grease is coated on the rubber gasket, and the bottoms of the air inlet hole and the air outlet hole are communicated with the top of the cavity.
As a still further scheme of the invention: the second O-shaped sealing ring is matched with the annular groove, and vacuum silicone grease is coated on the second O-shaped sealing ring.
As a still further scheme of the invention: the tank body, the tank cover and the fastening pressing cap are all made of stainless steel.
As a still further scheme of the invention: the spacer ring is made of aluminum, and the first O-shaped sealing ring and the second O-shaped sealing ring are made of cyanogen butadiene rubber.
The invention can construct a beta/internal conversion electronic vacuum measuring device, realize the windowless sealing design between the sample to be measured and the SDD detector, and solve the vacuum measurement problem of charged particles such as beta/internal conversion electrons and the like. The invention is used for measuring the energy spectrum of charged particles such as beta/internal conversion electrons. The SDD Detector 1 is an X-Ray Detector (X-Ray Detector) manufactured by American company of America, and is in a model of XR-100SDD (super Drift Detector) or/XR-FastSDD.
In summary, the technical solution adopted by the present invention to solve the above technical problems is: (1) fastening a pressing cap on an X-ray silicon drift probe sleeve of the SDD detector, sleeving a spacer ring and an O-shaped sealing ring, repeating the steps, and uniformly coating vacuum silicone grease on the O-shaped sealing ring; (2) inserting the assembled SDD detector into a tank body of a measuring chamber, screwing in a fastening pressing cap to apply pressure to the multilayer spacer ring and the O-shaped sealing ring, and realizing windowless sealing between the SDD detector and the measuring chamber; (3) covering a rubber gasket on the upper end pressing surface of the thread of the Swagelok quick plug, smearing vacuum silicone grease, screwing the vacuum silicone grease into the air inlet and outlet holes of the tank body, and sealing the air inlet and outlet holes of the tank body; (4) an O-shaped sealing ring is filled in an annular groove at the bottom of the tank cover, vacuum silicone grease is smeared, and the assembled tank body is buckled on the tank cover from the upper part, so that the sealing between the tank body and the tank cover is realized.
Compared with the prior art, the invention has the beneficial effects that: the device realizes the construction of a beta/internal conversion electronic vacuum measurement environment, realizes the windowless sealing design between a sample to be measured and the SDD detector, avoids the attenuation or absorption of air or other media to beta particles/internal conversion electrons, adopts a mode of fastening a pressure cap to apply pressure to a plurality of layers of spacing rings and O-shaped sealing rings, and obviously improves the vacuum sealing performance of the device.
After the assembly is finished and the vacuum pumping is carried out, the system leakage rate is less than 5 multiplied by 10 < -8 > Pa.m 3/s, and good vacuum measurement conditions are created for the beta/internal conversion electron energy spectrum measurement of radioactive substances.
Drawings
FIG. 1 is a schematic view of a β/inner switching electron vacuum measurement device.
FIG. 2 is an enlarged schematic view of the structure of A in the β/inner transition electron vacuum measuring apparatus.
FIG. 3 is an enlarged schematic view of the structure of B in the β/inner switching electron vacuum measuring device.
The labels in the figure are: 1. an SDD detector; 2. fastening a pressing cap; 3. swagelok quick connector; 4. a tank body; 5. a first O-ring seal; 6. a space ring; 7. a can lid; 8. a second O-ring seal; 9. a chamber; 10. an annular groove; 11. a rubber gasket; 12. a through hole; 13. a tubular tank opening; 14. x-ray silicon drift probes (long beak part of cylindrical tube); 15. an annular end face; 16. an air inlet; 17. an air outlet; 18. and (6) perforating.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 3, in the embodiment of the present invention, a β/internal conversion electronic vacuum measuring apparatus includes an SDD detector 1 and a tank 4, the SDD detector 1 is in the model of XR-100SDD/XR-FastSDD, and the SDD detector 1 is manufactured by Amptek, an X-ray silicon drift probe 14 of the SDD detector 1 is sleeved with a fastening press cap 2, an X-ray silicon drift probe 14 of the SDD detector 1 is sleeved with a first O-ring 5 and a spacer ring 6, a through hole 18 is formed in the center of the top of the fastening press cap 2, the X-ray silicon drift probe passes through the fastening press cap 2 via the through hole 18, the fastening press cap 2 is correspondingly sleeved on the X-ray silicon drift probe 14 and the tubular tank opening 13, the inner circumferential surface of the fastening press cap 2 is fastened on the outer circumferential surface of the tubular tank opening 13 via a screw thread, the spacer ring 6 is made of an aluminum material, a cavity 9 is disposed in the tank 4, the middle of the top of the tank body 4 is provided with a through hole 12, a tubular tank opening 13 is fixedly arranged on the top of the tank body 4 adjacent to an annular part surrounding the through hole 12, the tubular tank opening 13 and the through hole 12 are mutually sealed and fixedly communicated, the top of the tank body 4 is symmetrically provided with an air hole-air inlet hole 16 and an air outlet hole 17 relative to the tubular tank opening 13, an X-ray silicon drift probe 14 of the SDD detector 1 penetrates into the cavity 9 through the tubular tank opening 13 and the through hole 12, the bottom of the through hole 12 is communicated with the top of the cavity 9, a first O-shaped sealing ring 5 is uniformly coated with vacuum silicone grease, the windowless sealing property between the SDD detector 1 and the tank body 4 is increased through a fastening pressure cap 2, a Swagelok quick plug 3 is respectively arranged on the air inlet holes of the 16 and the air outlet hole 17, the Swagelok quick plug 3 is SS-QC4-D-4PM, and the manufacturer of the Swagelok quick plug 3 is Swagelok company, the outer edge of the bottom of the tank body 4 is fixedly connected with a second O-shaped sealing ring 8, the tank cover 7 is arranged below the tank body 4, the tank cover 7 and the fastening pressing cap 2 are made of stainless steel materials, the outer surface of the Swagelok quick-connection plug 3 is provided with threads, the inner walls of the air inlet hole 16 and the air outlet hole 17 are provided with threads matched with the Swagelok quick-connection plug 3, the air inlet hole 17 and the air outlet hole 17 are matched with the Swagelok quick-connection plug 3, the upper end of the threads of the Swagelok quick-connection plug 3 is covered with a rubber gasket 11, the rubber gasket 11 is coated with vacuum silicone grease, the bottoms of the air inlet hole and the air outlet hole are communicated with the top of the cavity 9, the sealing performance between the Swagelok quick-connection plug 3 and the air inlet hole and the air outlet hole is improved, the air inlet and outlet sealing of the tank body 4 is realized, the outer edge of the top of the tank cover 7 is provided with an annular groove, the second O-shaped sealing, the first O-shaped sealing ring 5 and the second O-shaped sealing ring 8 are both made of a butadiene-acrylonitrile rubber material, so that the sealing between the tank body 4 and the tank cover 7 is realized.
The working principle of the invention is as follows: an X-ray silicon drift probe 14 of the SDD detector 1 is sleeved with a fastening pressure cap 2, then a spacer ring 6 and a first O-shaped sealing ring 5 are sleeved on the probe, and a plurality of layers are repeated, and vacuum silicone grease is uniformly coated on the first O-shaped sealing ring 5; inserting the SDD detector 1 assembled in the previous step into a chamber 9 for measuring the tank body 4, screwing in a fastening pressing cap 2 to press a space ring 6 and a first O-shaped sealing ring 5, thereby realizing windowless sealing between the SDD detector 1 and the tank body 4; the upper end pressing surface of the thread of the Swagelok quick connector 3 is covered with a rubber gasket 11, vacuum silicone grease is coated on the rubber gasket and correspondingly screwed into an air inlet 16 and an air outlet 17 of the tank body 4, so that the sealing of air inlet and outlet of the tank body 4 is realized; and a second O-shaped sealing ring 8 is filled in the annular groove of the tank cover 7, and vacuum silicone grease is coated on the annular groove. If the object to be measured is a solid source or a liquid source, the source is placed in the center of the tank cover 7, and then the assembled tank body 4 is buckled on the tank cover 7 from the upper part to realize the sealing between the tank body 4 and the tank cover 7; the Swagelok quick-plug connector 3 inserted into the air outlet 17 is connected with the vacuumizing air path, if the measured object is a radioactive gas source, the Swagelok quick-plug connector 3 inserted into the air inlet 16 is connected with the air guide air path, otherwise, the Swagelok quick-plug connector 3 inserted into the air inlet 16 is suspended; and starting the vacuum pump, and starting the SDD detector 1 when the indication number of the vacuum gauge is close to zero (the vacuum gauge is arranged on a vacuum path) and the measuring chamber 9 reaches a vacuum measuring condition, so that the SDD detector 1 can carry out beta particle/internal conversion electronic energy spectrum measurement on the radioactive substance.
The assembly structure of the invention is shown in figure 1: a pressing cap 2 is fastened on an X-ray silicon drift probe 14 of an SDD detector 1 in a sleeved mode, then a spacer ring 6 and a first O-shaped sealing ring 5 are sleeved on the X-ray silicon drift probe 14, a plurality of layers of first O-shaped sealing rings 5 and spacer rings 6 are sleeved on the X-ray silicon drift probe 14 repeatedly and alternately in a sleeved mode, the first O-shaped sealing rings 5 and the spacer rings 6 are sleeved on the X-ray silicon drift probe in an alternating mode at intervals, and vacuum silicone grease is evenly smeared on the first O-shaped sealing rings 5 and the spacer rings 6; inserting an X-ray silicon drift probe 14 (a long beak part in a cylindrical pipe shape) of the SDD detector 1 assembled in the previous step into a tubular tank opening 13 arranged at the top end of a tank body 4 with a measurement cavity/tank cavity, wherein the foremost end of the X-ray silicon drift probe 14 slightly extends into the tank cavity, a fastening press cap 2 is additionally arranged on the tubular tank opening 13, the X-ray silicon drift probe passes through the fastening press cap 2 through a through hole 18 arranged at the top of the fastening press cap 2, the fastening press cap 2 is sleeved outside the tubular tank opening 13 through threads, the fastening press cap 2 is screwed in by means of thread meshing, a spacing extrusion restraining spacer ring 6 and a first O-shaped sealing ring 5 on the inner wall of the tubular tank opening 13 are used for forcibly applying a fastening force to the spacer ring 6 and the first O-shaped sealing ring 5, and the X-ray silicon drift probe 14 is inserted and fixed with the tubular tank opening 13 by means of the spacer ring 6, the first O-shaped sealing ring 5, and the extrusion force and the static friction force between the inner circumferential, thereby realizing the windowless sealing between the SDD detector 1 and the tank body 4; the outer diameter of the rear part of the Swagelok quick-plug connector 3 is larger than that of the front part thereof, so that an annular end face 15 which is protruded along the radial direction relative to the front part is formed at the rear part of the Swagelok quick-plug connector 3 in the circumferential direction, vacuum silicone grease is coated on the outer surface of the rubber gasket 11, then the rubber gasket 11 is sleeved on the portion, between the annular end face 15 and the annular portion, which is adjacent to the upper end face of the tank body 4 and surrounds the Swagelok quick-plug connector, of the Swagelok quick-plug connector 3, namely the rubber gasket 11 is sleeved between the annular end face 15 and the annular portion, which is adjacent to the upper end face of the tank body 4 and surrounds the Swagelok quick-plug connector, an air inlet hole 16 and an air outlet hole 17 which are provided with internal threads and communicated with a tank cavity are formed in the tank wall at the top end of the tank body 4, the front end head of the Swagelok quick-plug connector 3 is provided with internal threads, the vacuum silicone grease is correspondingly and tightly sealed with the rubber gasket 11, the Swagelok quick connector 3 and the annular end face 15 to realize the sealing of the air inlet and outlet holes 17 of the tank body 4; after the second O-shaped sealing ring 8 is coated with vacuum silicone grease, the second O-shaped sealing ring 8 is filled into the annular groove formed on the bottom surface of the tank cover 7, the second O-shaped sealing ring 8 is clamped in the annular groove due to the elastic restoring force of the second O-shaped sealing ring, and cannot fall out of the annular groove due to the gravity when the bottom surface of the tank cover 7 faces downwards, if the object to be measured is a solid source or a liquid source, the source (object to be measured) is placed in the center of the inner wall surface of the tank cover 7, then the assembled can body 4 is aligned and matched with the can cover 7 from the right upper part of the can cover 7, the sealing between the can body 4 and the can cover 7 is realized by vacuum silicone oil and a second O-shaped sealing ring 8, the Swagelok quick-connection plug 3 inserted into the air outlet 17 is connected with a vacuum-pumping air path, if the measuring object is a radioactive gas source, the rear end of the Swagelok quick connector 3 inserted into the gas inlet 16 is connected with the gas guide gas circuit, otherwise, the Swagelok quick connector 3 inserted into the gas inlet 16 is suspended; and starting the vacuum pump, and starting the SDD detector 1 when the indication number of the vacuum gauge is close to zero (the vacuum gauge is arranged on a vacuum path) and the measurement chamber reaches a vacuum measurement condition, so that the SDD detector 1 can carry out beta particle/internal conversion electronic energy spectrum measurement on the radioactive substance.
The invention comprises an SDD detector 1 (silicon drift detector), a fastening pressing cap 2, a Swagelok quick-connection plug 3, a tank body 4, an O-shaped sealing ring, a spacer ring 6, a tank cover 7 and the like. The fastening pressing cap 2, the tank body 4 and the tank cover 7 are processed by stainless steel; the SDD detector 1 is an Amptek model XR-100SDD/XR-FastSDD standard detector (an X-ray detector); the quick connector 3 is a Swagelok model SS-QC4-D-4PM or SS-QC4-D-2PM quick connector; the space ring 6 is processed by aluminum; the O-shaped sealing ring is made of a butadiene-acrylonitrile rubber product.
The invention has the following advantages: 1. the device realizes the windowless sealing design between the sample source to be detected and the SDD detector, and avoids the attenuation or absorption of air or other media to beta particles/internal conversion electrons. 2. The mode of pressing the multilayer spacer ring and the O-shaped sealing ring by the fastening pressing cap is adopted, so that the vacuum sealing performance of the device is obviously improved.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.
Claims (6)
1. A beta/internal conversion electronic vacuum measuring device comprises an SDD detector (1) and a tank body (4), and is characterized in that: an X-ray silicon drift probe (14) of the SDD detector (1) is sleeved with a fastening pressure cap (2), and an X-ray silicon drift probe (14) of the SDD detector (1) is sleeved with a first O-shaped sealing ring (5) and a spacer ring (6), a cavity (9) is arranged in the tank body (4), a through hole (12) is arranged in the middle of the top of the tank body (4), a tubular tank opening (13) which is hermetically communicated with the through hole (12) is fixedly arranged on the through hole, and the top of the tank body (4) is symmetrically provided with an air inlet (16) and an air outlet (17) relative to the tubular tank opening (13), the inside of the air inlet hole (16) and the air outlet hole (17) is respectively provided with a Swagelok quick-plug connector (3), a second O-shaped sealing ring (8) is fixedly connected at the outer edge of the bottom of the tank body (4), and a tank cover (7) is arranged below the tank body (4), and an annular groove (11) is arranged at the outer edge of the top of the tank cover (7).
2. The β/intra-conversion electronic vacuum measuring device according to claim 1, wherein: the outer surface of the lower side of the X-ray silicon drift probe (14) of the SDD detector (1) is provided with threads, the inner wall of the through hole (12) is provided with threads matched with the SDD detector (1), the SDD detector (1) is matched with the through hole (12), the bottom of the through hole (12) is communicated with the top of the cavity (9), and vacuum silicone grease is uniformly coated on the first O-shaped sealing ring (5).
3. The β/intra-conversion electronic vacuum measuring device according to claim 1, wherein: the outer surface of the Swagelok quick connector (3) is provided with threads, the inner walls of the air inlet hole (16) and the air outlet hole (17) are respectively provided with threads matched with the Swagelok quick connector (3), the air inlet hole (16) and the air outlet hole (17) are respectively matched with the Swagelok quick connector (3), a rubber gasket covers the upper end of the threads of the Swagelok quick connector (3) in a pressing mode, vacuum silicone grease is smeared on the rubber gasket, and the bottoms of the air inlet hole (16) and the air outlet hole (17) are communicated with the top of the cavity (9).
4. The β/intra-conversion electronic vacuum measuring device according to claim 1, wherein: the second O-shaped sealing ring (8) is matched with the annular groove (11), and vacuum silicone grease is coated on the second O-shaped sealing ring (8).
5. The β/intra-conversion electronic vacuum measuring device according to claim 1, wherein: the tank body (4), the tank cover (7) and the fastening pressing cap (2) are all made of stainless steel materials.
6. The β/intra-conversion electronic vacuum measuring device according to claim 1, wherein: the spacer ring (6) is made of aluminum, and the first O-shaped sealing ring (5) and the second O-shaped sealing ring (8) are made of butadiene-acrylonitrile rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010685155.9A CN112068186A (en) | 2020-07-16 | 2020-07-16 | Beta/internal conversion electronic vacuum measuring device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010685155.9A CN112068186A (en) | 2020-07-16 | 2020-07-16 | Beta/internal conversion electronic vacuum measuring device |
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| CN112068186A true CN112068186A (en) | 2020-12-11 |
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| CN202010685155.9A Pending CN112068186A (en) | 2020-07-16 | 2020-07-16 | Beta/internal conversion electronic vacuum measuring device |
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| CN114486969A (en) * | 2022-01-14 | 2022-05-13 | 中国科学院上海高等研究院 | System and method for testing soft X-ray fluorescence absorption spectrum of in-situ battery interface |
| CN114486969B (en) * | 2022-01-14 | 2023-11-24 | 中国科学院上海高等研究院 | Soft X-ray fluorescence absorption spectrum test system and method for in-situ battery interface |
| CN115390124A (en) * | 2022-08-19 | 2022-11-25 | 中国船舶重工集团公司第七一九研究所 | A radioactive gas detection device based on a silicon drift detector |
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