CN107315189A - A kind of gamma ray probe and preparation method - Google Patents
A kind of gamma ray probe and preparation method Download PDFInfo
- Publication number
- CN107315189A CN107315189A CN201710602379.7A CN201710602379A CN107315189A CN 107315189 A CN107315189 A CN 107315189A CN 201710602379 A CN201710602379 A CN 201710602379A CN 107315189 A CN107315189 A CN 107315189A
- Authority
- CN
- China
- Prior art keywords
- sleeve
- scintillation crystal
- photomultiplier
- inside lining
- shell
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T1/00—Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
- G01T1/16—Measuring radiation intensity
- G01T1/20—Measuring radiation intensity with scintillation detectors
- G01T1/202—Measuring radiation intensity with scintillation detectors the detector being a crystal
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/002—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating specially adapted for particular articles or work
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/02—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating by means of a press ; Diffusion bonding
- B23K20/023—Thermo-compression bonding
- B23K20/026—Thermo-compression bonding with diffusion of soldering material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/36—Electric or electronic devices
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- High Energy & Nuclear Physics (AREA)
- Molecular Biology (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Measurement Of Radiation (AREA)
Abstract
The present invention relates to measurement apparatus technical field, propose a kind of gamma ray probe and preparation method, including shell, the scintillation crystal being placed in the shell, photomultiplier and circuit board, the enclosure is provided with inside lining sleeve and sleeve, the inside lining sleeve is the drum of one end open, the depth that is open is more than the crystal height of the scintillation crystal, the scintillation crystal is installed in the inside lining sleeve, the corresponding neck for fixing the photomultiplier and the circuit board is provided with the sleeve, the photomultiplier and circuit board are installed in each self-corresponding neck, the inside lining sleeve is placed in the shell bottom, the inside lining sleeve is in close contact with the sleeve.The position of scintillation crystal, photomultiplier can be relatively fixed by the present invention, it is not mutually collided and crushed photomultiplier, safely realize the assembling of gamma-ray probe, can also be effectively prevented from easy deliquescence scintillation crystal moisture absorption failure.
Description
Technical field
The present invention relates to measurement apparatus technical field, more particularly to a kind of gamma ray probe and preparation method.
Background technology
Gamma-rays has very strong penetrability, and radiographic inspection is exactly the side for obtaining penetrability and linearity using gamma-rays to detect a flaw
Method.Although gamma-rays will not be as visible ray with visually just can directly be appreciated that, it can make photographic negative photosensitive, it is also possible to special
Different receiver is received.When gamma-rays passes through (irradiation) material, the density of the material is bigger, and transmitted intensity, which weakens, to be got over
It is many, i.e., radial energy be perforated through the material intensity just it is smaller.Now, if being received with photographic negative, the sensitive volume of egative film is just small；
If being received with instrument, the signal of acquisition is just weak.
In geological exploration field, different stratum, the content of radioactive element is different with species, is popped one's head in using gamma ray
The intensity of gamma ray can distinguish stratum and determine stratum element in detection stratum, and current gamma ray probe is usually
Be made up of one block of scintillation crystal and matched photomultiplier, by certain method to electric impulse signal carry out processing and
Collection, obtains the information related to stratum and stratum element.Gamma detector is a kind of important Nuclear geophysics method, is solution
Certainly one of Main Means of relevant issues such as geoscience, environmental science.According to the gamma ray spectroscopy surveyed, gamma can be obtained
Radiation amount, the constituent content such as uranium, thorium, potassium and other relevant element and lithological informations, according to these information, can not only enter
Row ore deposit is explored, but also can be applied to geologic mapping, and various metal and nonmetal deposits productions etc. are found in oil gas exploration.Gal
The research of horse power spectrum survey meter is a field of domestic and international awfully hot door, and its wide range of services is in geology industry, health care, environment
Radioactivity monitoring etc..Gamma ray probe is mainly used in oilfield prospecting developing field, and it can take at scene to drilling well in the wild
The core gone out carries out the measurement of quick gamma ray value, and result is printed.Gamma value measurement was so both improved
Accuracy, while also greatly shortening the work period, improves operating efficiency, reduction detection cost.
In process of the present invention is realized, inventor find due to gamma ray probe be usually by one block of scintillation crystal and with
Supporting photomultiplier composition, but photomultiplier is extremely frangible, and this just brings trouble to the assembling of gamma-ray probe.
Therefore, that how safely to realize gamma-ray probe is assembled into current urgent problem to be solved.
The content of the invention
In view of the above problems, the present invention proposes a kind of gamma ray probe and preparation method, can safely realize gal
The assembling of horse probe, can also be effectively prevented from easy deliquescence scintillation crystal moisture absorption failure.
Gamma ray probe provided in an embodiment of the present invention, including shell, the scintillation crystal being placed in the shell, photoelectricity
Multiplier tube and circuit board, the enclosure are provided with inside lining sleeve and sleeve, and the inside lining sleeve is the drum of one end open, and opening is deep
Degree is more than the crystal height of the scintillation crystal, and the scintillation crystal is installed in the inside lining sleeve, is provided with the sleeve
Corresponding neck for fixing the photomultiplier and the circuit board, the photomultiplier and the circuit board are installed on
In each self-corresponding neck, the inside lining sleeve is placed in the shell bottom, and the inside lining sleeve is in close contact with the sleeve.
Wherein, the inside lining sleeve uses anhydrous epoxy glue bonding connection with the sleeve.
Wherein, the scintillation crystal is welded to connect with the internal lining pipe using vacuum tin cold welding.
Wherein, it is provided with cushion rubber bumper between the inside lining sleeve and the shell.
Wherein, the scintillation crystal is lanthanum bromide, lanthanum chloride or sodium iodide.
Wherein, the shell is realized using aluminum pipe.
In addition, the embodiment of the present invention additionally provides a kind of preparation method of gamma ray probe as described above, including：
The scintillation crystal is welded to connect with internal lining pipe using vacuum tin cold welding；
The photomultiplier and the circuit board are fixed according to each self-corresponding neck set in the sleeve and pacified
In the sleeve；
After the scintillation crystal and photomultiplier are installed, the inside lining sleeve and sleeve are used into anhydrous epoxy glue
Bond, and be installed in the shell.
Wherein, it is described to be welded to connect the scintillation crystal using vacuum tin cold welding with internal lining pipe, including：
Tin welding layer is coated with the contact site of the scintillation crystal and internal lining pipe with the mode of thermal evaporation；
Using cold pressing treatment, pressure welding operation is carried out in vacuum environment, scintillation crystal is soldered to shape in the internal lining pipe
Into pre-packaged component, the cold pressing treatment is specially when being welded, and temperature is heated into 45 DEG C, diaphragm and shell contact surface
On pressure be forced into 75MPa, pressurize 15min；
Heat diffusion treatment is carried out to the obtained pre-packaged component under vacuum pressurize environment, cooling is treated after being disposed
With the temperature of the heat diffusion treatment is 120 DEG C, and pressure is 100MPa, and the pressure-maintaining and heat-preservation time is 6 hours.
Gamma ray provided in an embodiment of the present invention probe and preparation method, can be by scintillation crystal, photomultiplier
Position is relatively fixed, and it is not mutually collided and is crushed photomultiplier, safely realizes the assembling of gamma-ray probe, may be used also
To be effectively prevented from easy deliquescence scintillation crystal moisture absorption failure, and it is easy for installation, it is with low cost.
Described above is only the general introduction of technical solution of the present invention, in order to better understand the technological means of the present invention,
And can be practiced according to the content of specification, and in order to allow above and other objects of the present invention, feature and advantage can
Become apparent, below especially exemplified by the embodiment of the present invention.
Brief description of the drawings
By reading the detailed description of hereafter preferred embodiment, various other advantages and benefit is common for this area
Technical staff will be clear understanding.Accompanying drawing is only used for showing the purpose of preferred embodiment, and is not considered as to the present invention
Limitation.And in whole accompanying drawing, identical part is denoted by the same reference numerals.In the accompanying drawings：
Fig. 1 is the structural representation of the gamma ray probe of the embodiment of the present invention；
In figure：1st, scintillation crystal, 2, inside lining sleeve, 3, photomultiplier, 4, sleeve, 5, circuit board, 6, shell.
Embodiment
The exemplary embodiment of the disclosure is more fully described below with reference to accompanying drawings.Although showing the disclosure in accompanying drawing
Exemplary embodiment, it being understood, however, that may be realized in various forms the disclosure without should be by embodiments set forth here
Limited.On the contrary, these embodiments are provided to facilitate a more thoroughly understanding of the present invention, and can be by the scope of the present disclosure
Complete conveys to those skilled in the art.
Those skilled in the art of the present technique are appreciated that unless otherwise defined, all terms used herein (including technology art
Language and scientific terminology), with the general understanding identical meaning with the those of ordinary skill in art of the present invention.Should also
Understand, those terms defined in such as general dictionary, it should be understood that with the context with prior art
The consistent meaning of meaning, and unless by specific definitions, otherwise will not be explained with idealization or excessively formal implication.
Popped one's head in the embodiments of the invention provide a kind of improved gamma ray, make its installation safer, assembling is more convenient, and
And deliquescent scintillation crystal can be encapsulated.The structure that Fig. 1 diagrammatically illustrates the gamma ray probe of the embodiment of the present invention is shown
It is intended to.Reference picture 1, gamma ray provided in an embodiment of the present invention probe, including shell 6, be placed in being used in the shell 6 and adopt
Collect the scintillation crystal 1 and scintillation crystal 1 supporting photomultiplier 3 and circuit board 5 of gamma ray, the shell 6 is real using aluminum pipe
It is existing.
Wherein, the inside of shell 6 is provided with the inside lining sleeve 2 for protecting scintillation crystal 1 and the set for protecting photomultiplier
Cylinder 4, the inside lining sleeve 2 is the drum of one end open, and opening depth is more than the crystal height of the scintillation crystal 1, the flicker
Crystal 1 is installed in the inside lining sleeve 2, is provided with the sleeve 4 for fixing the photomultiplier 3 and the circuit board
5 corresponding neck, the photomultiplier 3 and the circuit board 5 are installed in each self-corresponding neck, and the inside lining sleeve 2 is put
In the bottom of shell 6, the inside lining sleeve 2 is in close contact with the sleeve 4.Gamma ray provided in an embodiment of the present invention is visited
The position of scintillation crystal, photomultiplier, can be relatively fixed by head, it is not mutually collided and break photomultiplier
It is broken, the assembling of gamma-ray probe is safely realized, easy deliquescence scintillation crystal moisture absorption failure can also be effectively prevented from.
In the present embodiment, shell 6 is realized using aluminum pipe, aluminum pipe one end open, an end closure, for protecting scintillation crystal 1
Inside lining sleeve 2 and sleeve 4 for protecting photomultiplier, be installed on from the openend of aluminum pipe in aluminum pipe shell.
Scintillation crystal in the present embodiment can be realized using lanthanum bromide, lanthanum chloride or sodium iodide etc..
In the embodiment of the present invention, inside lining sleeve 2 can use anhydrous epoxy glue bonding connection with sleeve 4.Nothing in the present embodiment
The features such as water epoxy glue has good adhesion strength, heat resistance, water resistance, inside lining sleeve 2 and set are bonded using anhydrous epoxy glue
Cylinder 4, to realize that inside lining sleeve is in close contact with sleeve, it can be ensured that avoided to the hermetically sealed of inside lining sleeve 2, and then more efficiently
Easy deliquescence scintillation crystal moisture absorption failure.
In the embodiment of the present invention, scintillation crystal 1 is welded to connect with internal lining pipe 2 using vacuum tin cold welding.Specifically, vacuum
Tin cold welding process is as follows：Step 1：With the mode of thermal evaporation tin welding is coated with the contact portion of scintillation crystal and internal lining pipe
Layer.Step 2：Using cold pressing treatment, pressure welding operation is carried out in vacuum environment, scintillation crystal is soldered to internal lining pipe and forms pre- envelope
Arrangement, the cold pressing treatment is specially that when being welded, temperature is heated into the pressure on 45 DEG C, diaphragm and shell contact surface
Force and be depressed into 75MPa, pressurize 15min；Step 3：Heat diffusion treatment, processing are carried out to pre-packaged component under vacuum pressurize environment
Cool down stand-by after finishing, the temperature of the heat diffusion treatment is 120 DEG C, and pressure is 100MPa, and the pressure-maintaining and heat-preservation time is 6 hours.
In the present embodiment, scintillation crystal is welded with internal lining pipe using the cold welding of vacuum tin, and inoxidizability and air-tightness are good, can be effective
Ground avoids the easy deliquescence scintillation crystal moisture absorption from failing.
In one alternate embodiment, can be with order to further improve the shock-proof and anti-collision performance of gamma ray probe
Padded coaming is set between inside lining sleeve 2 and shell 6, for example：Cushion rubber bumper etc..
In addition, another embodiment of the present invention additionally provides a kind of making side of the gamma ray probe shown in above-described embodiment
Method, specifically includes following Making programme：
S11, the scintillation crystal and internal lining pipe be welded to connect using vacuum tin cold welding.Wherein, vacuum tin cold welding
Process is specific as follows：Tin welding layer is coated with the contact site of the scintillation crystal and internal lining pipe with the mode of thermal evaporation；Using
Cold pressing treatment, pressure welding operation is carried out in vacuum environment, scintillation crystal is soldered in the internal lining pipe and forms pre-packaged component,
The cold pressing treatment is specially when being welded, temperature to be heated into 45 DEG C, diaphragm pressurizes with the pressure on shell contact surface
To 75MPa, pressurize 15min；Heat diffusion treatment is carried out to the obtained pre-packaged component under vacuum pressurize environment, handled
Cool down stand-by after finishing, the temperature of the heat diffusion treatment is 120 DEG C, and pressure is 100MPa, and the pressure-maintaining and heat-preservation time is 6 hours.
S12, the photomultiplier and the circuit board consolidated according to each self-corresponding neck set in the sleeve
Dingan County is mounted in the sleeve；
S13, after the scintillation crystal and photomultiplier are installed, the inside lining sleeve and sleeve are used without water ring
The gluing knot of oxygen, and be installed in the shell.
Specific measures for implementation are as follows：
First by scintillation crystal and internal lining pipe by the way of vacuum tin cold welding welding thermal evaporation in scintillation crystal and interior
The contact portion of bushing pipe is coated with tin welding layer, and using cold pressing treatment, temperature 45 C carries out pressure welding operation, window in vacuum environment
Mouth piece is forced into 75MPa, pressurize 15min with the pressure on shell contact surface, and scintillation crystal is soldered into internal lining pipe forms pre- envelope
Arrangement.Under vacuum pressurize environment, heat diffusion treatment is carried out to pre-packaged component, temperature is 120 DEG C, and pressure is 100MPa,
The pressure-maintaining and heat-preservation time is 6 hours, is cooled down after being disposed stand-by.By packaged easy deliquescence scintillation crystal and photomultiplier point
The two ends of aluminum shell are not put into, inside lining sleeve is inserted in photomultiplier, and circuit board is fitted into the circuit board slot of sleeve, are compressed
The two ends of aluminum shell.
To sum up, gamma ray probe provided in an embodiment of the present invention and preparation method, can be by scintillation crystal, photomultiplier transit
The position of pipe is relatively fixed, and it is not mutually collided and is crushed photomultiplier, safely realizes the assembling of gamma-ray probe,
Easy deliquescence scintillation crystal moisture absorption failure can also be effectively prevented from, and it is easy for installation, it is with low cost.
Although it will be appreciated by those of skill in the art that some embodiments in this are included included by other embodiments
Some features rather than further feature, but the combination of the feature of be the same as Example does not mean to be within the scope of the present invention simultaneously
And form different embodiments.For example, in the following claims, the one of any of embodiment claimed all may be used
Used in mode in any combination.
Finally it should be noted that：The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
The present invention is described in detail with reference to the foregoing embodiments, it will be understood by those within the art that：It still may be used
To be modified to the technical scheme described in foregoing embodiments, or equivalent substitution is carried out to which part technical characteristic；
And these modification or replace, do not make appropriate technical solution essence depart from various embodiments of the present invention technical scheme spirit and
Scope.
Claims (8)
1. a kind of gamma ray probe, including shell, the scintillation crystal being placed in the shell, photomultiplier and circuit board,
Characterized in that, the enclosure is provided with inside lining sleeve and sleeve, the inside lining sleeve is the drum of one end open, and opening depth is big
In the crystal height of the scintillation crystal, the scintillation crystal is installed in the inside lining sleeve, and being provided with the sleeve is used for
The corresponding neck of the fixed photomultiplier and the circuit board, the photomultiplier and the circuit board are installed on each
In corresponding neck, the inside lining sleeve is placed in the shell bottom, and the inside lining sleeve is in close contact with the sleeve.
2. gamma ray probe according to claim 1, it is characterised in that the inside lining sleeve is with the sleeve using anhydrous
Epoxy glue bonding connection.
3. gamma ray probe according to claim 1, it is characterised in that the scintillation crystal is used with the internal lining pipe
Vacuum tin cold welding is welded to connect.
4. gamma ray probe according to claim 1, it is characterised in that set between the inside lining sleeve and the shell
There is cushion rubber bumper.
5. the gamma ray probe according to claim any one of 1-4, it is characterised in that the scintillation crystal is bromination
Lanthanum, lanthanum chloride or sodium iodide.
6. the gamma ray probe according to claim any one of 1-4, it is characterised in that the shell is real using aluminum pipe
It is existing.
7. a kind of preparation method of gamma ray probe as described in claim any one of 1-6, it is characterised in that including：
The scintillation crystal is welded to connect with internal lining pipe using vacuum tin cold welding；
The photomultiplier and the circuit board are fixedly mounted on according to each self-corresponding neck set in the sleeve
In the sleeve；
After the scintillation crystal and photomultiplier are installed, the inside lining sleeve and sleeve are used into anhydrous Wear Characteristics of Epoxy Adhesive
Knot, and be installed in the shell.
8. method according to claim 7, it is characterised in that described that the scintillation crystal and internal lining pipe are used into vacuum tin
Cold welding is welded to connect, including：
Tin welding layer is coated with the contact site of the scintillation crystal and internal lining pipe with the mode of thermal evaporation；
Using cold pressing treatment, pressure welding operation is carried out in vacuum environment, scintillation crystal is soldered in the internal lining pipe and forms pre-
Package assembling, the cold pressing treatment is specially that when being welded, temperature is heated on 45 DEG C, diaphragm and shell contact surface
Pressure is forced into 75MPa, pressurize 15min；
Heat diffusion treatment is carried out to the obtained pre-packaged component under vacuum pressurize environment, cooled down after being disposed it is stand-by,
The temperature of the heat diffusion treatment is 120 DEG C, and pressure is 100MPa, and the pressure-maintaining and heat-preservation time is 6 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201710602379.7A CN107315189A (en) | 2017-07-21 | 2017-07-21 | A kind of gamma ray probe and preparation method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710602379.7A CN107315189A (en) | 2017-07-21 | 2017-07-21 | A kind of gamma ray probe and preparation method |
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| CN107315189A true CN107315189A (en) | 2017-11-03 |
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| CN201710602379.7A Pending CN107315189A (en) | 2017-07-21 | 2017-07-21 | A kind of gamma ray probe and preparation method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110888153A (en) * | 2018-09-10 | 2020-03-17 | 同方威视技术股份有限公司 | Dose rate detection system |
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Application publication date: 20171103 |