CN205679770U - Nuclear Instrument sodium iodide crystal and photomultiplier tube flexible connecting device - Google Patents
Nuclear Instrument sodium iodide crystal and photomultiplier tube flexible connecting device Download PDFInfo
- Publication number
- CN205679770U CN205679770U CN201620606273.5U CN201620606273U CN205679770U CN 205679770 U CN205679770 U CN 205679770U CN 201620606273 U CN201620606273 U CN 201620606273U CN 205679770 U CN205679770 U CN 205679770U
- Authority
- CN
- China
- Prior art keywords
- photomultiplier tube
- sodium iodide
- iodide crystal
- connecting device
- crystal
- 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.)
- Expired - Fee Related
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- Measurement Of Radiation (AREA)
Abstract
This utility model relates to Nuclear Instrument technical field, is specifically related to a kind of Nuclear Instrument sodium iodide crystal and photomultiplier tube flexible connecting device.Described flexible connecting device is arranged between the sodium iodide crystal of Nuclear Instrument and photomultiplier tube, it is lamellar and have flexible optical coupling sheet, the both side surface of described optical coupling sheet be plane and respectively end face with described sodium iodide crystal, photomultiplier tube abut against.The design of this utility model structure is simple, and simple installation is quick, and be beneficial to increase NaI crystal and photomultiplier tube couples stability.By using optical coupling sheet, avoid sodium iodide crystal to contact with the direct of photomultiplier tube, make the connection between detector crystal and photomultiplier tube have certain cushion space, decrease the damage that vibrations bring, do not interfere with light transmission between the two simultaneously, be beneficial to increase the service life yet.
Description
Technical field
This utility model relates to Nuclear Instrument technical field, is specifically related to a kind of Nuclear Instrument sodium iodide crystal and photomultiplier tube
Flexible connecting device.
Background technology
More crucial any is transmitted for signal in radioprotective instrument meter, it is simply that between receiving device and amplifying device
Coupling.If the coupling between this is the best, it is fatal for the accuracy measured.
In prior art, part uses the mode smearing silicone oil to realize Nuclear Instrument sodium iodide crystal and photomultiplier tube
Connecting, this connected mode easily causes sodium iodide crystal rupture and connect different because of conditions such as vibrations at the scene that Nuclear Instrument uses
Chang Xianxiang, thus affect coupling stability and instrument service life.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of simple in construction, installs convenient it can be avoided that detect
The Nuclear Instrument sodium iodide crystal of the problems such as the fracture of device crystal and connection exception and photomultiplier tube flexible connecting device.
For solving above-mentioned technical problem, the technical scheme that this utility model employing is following:
Nuclear Instrument sodium iodide crystal and photomultiplier tube flexible connecting device, be arranged at sodium iodide crystal and the light of Nuclear Instrument
Between electricity multiplier tube, described flexible connecting device is lamellar and has flexible optical coupling sheet, the both sides of described optical coupling sheet
Surface be plane and respectively end face with described sodium iodide crystal, photomultiplier tube abut against.
As preferably, described sodium iodide crystal is close with described photomultiplier tube outside the end of described optical coupling sheet
The end outer sheath of described optical coupling sheet is equipped with fairlead.
As preferably, described fairlead uses following structure, comprising:
First annular set, the inner diameter of described first annular set is suitable with the diameter of sodium iodide crystal；
Second annular sleeve, the inner diameter of described second annular sleeve is suitable with the diameter of photomultiplier tube；
Described first annular set is structure as a whole with described second annular sleeve, and described first annular set and described second ring
The axis of shape set coincides.
Wherein, described fairlead is preferably with politef set.
This utility model compared with prior art has the following beneficial effect:
(1) by using optical coupling sheet, it is to avoid sodium iodide crystal directly contacts with photomultiplier tube, makes detector crystalline substance
Connection between body and photomultiplier tube has had certain cushion space, decreases the damage that vibrations bring, simultaneously also will not shadow
Ring light transmission between the two, be beneficial to increase the service life；
(2) the positioning and guiding effect between crystal and photomultiplier tube is facilitated implementation by fairlead, so can be significantly
Increase the stability of its coupling；Fairlead selects material to be politef, has good electrical insulating property, mechanical performance and resistance to
High temperature performance, the design of its structure is simple, and simple installation is quick.
Accompanying drawing explanation
The following drawings is only intended to, in schematically illustrating this utility model and explaining, not limit model of the present utility model
Enclose.Wherein:
Fig. 1 is the assembling structural representation of this utility model embodiment one；
Fig. 2 is the plan structure schematic diagram of optical coupling sheet；
Fig. 3 is the assembling structural representation of this utility model embodiment two；
Fig. 4 is the plan structure schematic diagram of fairlead.
In figure: 1-sodium iodide crystal；2-photomultiplier tube；3-optical coupling sheet；4-fairlead；The first annular set of 41-；42-
Second annular sleeve.
Detailed description of the invention
Below in conjunction with the accompanying drawings and embodiment, this utility model is expanded on further.In the following detailed description, only by saying
Bright mode describes some one exemplary embodiment of the present utility model.Undoubtedly, those of ordinary skill in the art is permissible
Recognize, in the case of without departing from spirit and scope of the present utility model, can be by various different modes to described
Embodiment is modified.Therefore, accompanying drawing and description are inherently protection that is the most illustrative rather than that be used for limiting claim
Scope.
Embodiment one
As depicted in figs. 1 and 2, Nuclear Instrument sodium iodide crystal and photomultiplier tube flexible connecting device, it is arranged at Nuclear Instrument
Sodium iodide crystal 1 and photomultiplier tube 2 between, described flexible connecting device is lamellar and has flexible optical coupling sheet 3,
The both side surface of described optical coupling sheet 3 is plane and offsets with described sodium iodide crystal 1, the end face of photomultiplier tube 2 respectively
Connect.
Sodium iodide crystal 1 and photomultiplier tube 2 are the vitals above Nuclear Instrument level-sensing device, are to receive and conversion ray
Device.Wherein, sodium iodide crystal 1 and photomultiplier tube 2 are to be wrapped up by the lighttight sealing device of black, are used for stopping
Available light is on detector crystal and the impact of photomultiplier tube and damage.
When on roentgenization to detector crystal, detector crystal can send the light quilt that can make photomultiplier tube identification
Photomultiplier tube identification is also converted into the signal of telecommunication to make instrument show.Owing to optical coupling sheet 3 is soft, there is again good printing opacity
Property, make the connection between detector crystal and photomultiplier tube have certain cushion space, decrease the damage that vibrations bring,
Do not interfere with light transmission between the two simultaneously yet.
Embodiment two
With reference to Fig. 3 and Fig. 4, the present embodiment is with unique difference of embodiment one: described sodium iodide crystal 1 is near described
Outside the end of optical coupling sheet 3 with described photomultiplier tube 2 near the end outer sheath of described optical coupling sheet 3 equipped with fairlead 4.
Wherein, described fairlead 4 includes first annular set 41 and the second annular sleeve 42, the inwall of described first annular set 41
Diameter is suitable with the diameter of sodium iodide crystal 1；The inner diameter of described second annular sleeve 42 and the diameter phase of photomultiplier tube 2
Adaptive；Described first annular set 41 is structure as a whole with described second annular sleeve 42, and described first annular set 41 and described the
The axis of second ring set 42 coincides.
Facilitate implementation the positioning and guiding effect between sodium iodide crystal 1 and photomultiplier tube 2 by fairlead 4, so may be used
To be greatly increased the stability of its coupling；The material of fairlead preferably with politef, its have good electrical insulating property,
Mechanical performance and high and low temperature resistance.
The foregoing is only the schematic detailed description of the invention of this utility model, be not limited to model of the present utility model
Enclose.Any those skilled in the art, equivalent done on the premise of without departing from design of the present utility model and principle
Change and amendment, all should belong to the scope of this utility model protection.
Claims (4)
1. Nuclear Instrument sodium iodide crystal and photomultiplier tube flexible connecting device, be arranged at the sodium iodide crystal (1) of Nuclear Instrument with
Between photomultiplier tube (2), it is characterised in that: described flexible connecting device is lamellar and has flexible optical coupling sheet (3),
The both side surface of described optical coupling sheet (3) be plane and respectively with described sodium iodide crystal (1), the end of photomultiplier tube (2)
Face abuts against.
2. Nuclear Instrument sodium iodide crystal as claimed in claim 1 and photomultiplier tube flexible connecting device, it is characterised in that: institute
State sodium iodide crystal (1) described optical coupling close with described photomultiplier tube (2) outside the end of described optical coupling sheet (3)
The end outer sheath of sheet (3) is equipped with fairlead (4).
3. Nuclear Instrument sodium iodide crystal as claimed in claim 2 and photomultiplier tube flexible connecting device, it is characterised in that institute
State fairlead (4) to include:
First annular set (41), the inner diameter of described first annular set (41) is suitable with the diameter of sodium iodide crystal (1)；
Second annular sleeve (42), the inner diameter of described second annular sleeve (42) is suitable with the diameter of photomultiplier tube (2)；
Described first annular set (41) is structure as a whole with described second annular sleeve (42), and described first annular set (41) and institute
The axis stating the second annular sleeve (42) coincides.
4. Nuclear Instrument sodium iodide crystal as claimed in claim 2 or claim 3 and photomultiplier tube flexible connecting device, its feature exists
In: described fairlead (4) is politef set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620606273.5U CN205679770U (en) | 2016-06-20 | 2016-06-20 | Nuclear Instrument sodium iodide crystal and photomultiplier tube flexible connecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620606273.5U CN205679770U (en) | 2016-06-20 | 2016-06-20 | Nuclear Instrument sodium iodide crystal and photomultiplier tube flexible connecting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205679770U true CN205679770U (en) | 2016-11-09 |
Family
ID=57429952
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620606273.5U Expired - Fee Related CN205679770U (en) | 2016-06-20 | 2016-06-20 | Nuclear Instrument sodium iodide crystal and photomultiplier tube flexible connecting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205679770U (en) |
-
2016
- 2016-06-20 CN CN201620606273.5U patent/CN205679770U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161109 Termination date: 20200620 |