CN103439735A - Pressure-resistant detector preventing loosening - Google Patents
Pressure-resistant detector preventing loosening Download PDFInfo
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- CN103439735A CN103439735A CN2013103330418A CN201310333041A CN103439735A CN 103439735 A CN103439735 A CN 103439735A CN 2013103330418 A CN2013103330418 A CN 2013103330418A CN 201310333041 A CN201310333041 A CN 201310333041A CN 103439735 A CN103439735 A CN 103439735A
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- end cap
- withstand voltage
- detector
- voltage anti
- retaining element
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Abstract
The invention relates to a pressure-resistant detector preventing loosening. The pressure-resistant detector can work reliably under the severe environment with strong vibration shock. The detector comprises a shell, a photomultiplier and a partial pressure module. The shell comprises an end cover and a side cylinder. The detector is characterized by further comprising a fixing element arranged between the photomultiplier and the partial pressure module. The end cover comprises an extension part and a supporting part, and the extension part is arranged between the partial pressure module and the side cylinder and is closely attached to the fixing element. The pressure-resistant detector preventing loosening prevents the shell from loosening by keeping the distance of the photomultiplier relative to the end cover constant, and is capable of well guaranteeing concentricity and tolerance, simple in structure, convenient to assemble and low in cost.
Description
Technical field
The present invention relates to a kind of detector, be specifically related to a kind of withstand voltage anti-loosening detector that can reliably working under the rugged surroundings of high vibratory impulse.
Background technology
Scintillation detector based on photomultiplier generally includes scintillator, photomultiplier and the division module be placed in shell, and scintillator and photomultiplier are coupled by the optical coupled agent, to improve light transmissioning efficiency.In oil well logging etc. relates to the environment of greater impact and vibration, in order to reduce the relative motion of the elements such as scintillator, photomultiplier under vibration and impact condition, prevent that detector from damaging, guarantee the reliability of detector, need to carry out Aseismatic Design to detector.
Detector in use tends to be subject to the effect of the power of different directions, and therefore, the glissando that improves detector vibration resistance impact resistance relates generally to axial damping and damping two aspects radially.Radially damping is mainly in order to prevent that photomultiplier and scintillator from bending or radially relatively moving, and axial damping is mainly in order to guarantee the abundant coupling between photomultiplier and scintillator.
As shown in Figure 1, detector comprises photomultiplier 10, division module 20 and probe body to axial damping commonly used, and probe body comprises side neck 30 and end cap 40, and end cap 40 ends are equipped with damping spring, the power of coming for cushioning the scintillator conduction.But, between photomultiplier 10 in this structure and side neck 30, by fluid sealant, connect, when scintillator conducts when excessive to the power of photomultiplier 10, because end cap 40 directly acts on side neck 30, side neck 30 easily occurs loosening, and then causes can not fully being coupled between photomultiplier 10 and scintillator.
In addition, Chinese patent CN03810983.2 (patent name: instrumentation package and integrated radiation detector) has also put down in writing a kind of axial damping mode, it is the slip that utilizes restrictions of the frictional force photomultiplier and scintillator, section and the flexible metal bearing sleeve is installed in the junction of photomultiplier and scintillator in the enclosure specifically, adopt axle spring simultaneously, make photomultiplier and scintillator be constrained in flexible sleeve insert by contact friction under high shock conditions, and the flexible metal sleeve adopts the high material of axial resonance frequency, make sliding friction can produce high-intensity damping, prevent the vibration amplification that supporting will be responded to.But, in this structure, because enclosure has increased spring and various pad, cause shell to be divided into a lot of parts, under the condition of high vibratory impulse, the case member that several machinery is combined together easily occurs loosening, and assembling product is loaded down with trivial details, the package size tolerance is large, and the consistance of different product is difficult to ensure card.
Summary of the invention
Can not effectively solve probe body for axial damping mode of the prior art loosening problem occurs, the invention provides a kind of withstand voltage anti-loosening detector that is different from the prior art design.
The technical scheme that the present invention takes is, a kind of withstand voltage anti-loosening detector is provided, comprise shell, photomultiplier and division module, described shell comprises end cap and side neck, it is characterized in that: described detector also comprises the retaining element between described photomultiplier and described division module, described end cap comprises extension and supporting part, and described retaining element, between described division module and described side neck, and is close in described extension.
Further, an end of described retaining element is the arc be complementary with described photomultiplier end.
Further, described retaining element is shaped as annular.
Further, described retaining element adopts the high insulating material of physical strength.
Further, described retaining element adopts material high temperature resistant and that thermal expansivity is little.
Further, described retaining element adopts POM material or PPS material.
Further, the extension of described end cap meets at right angles and contacts with described retaining element.
Further, the inside of the supporting part of described end cap is horn-like structure, and its thick mouthful of end is connected with the extension of described end cap, and its thin mouthful of end is positioned at the end of described side neck.
Further, described end cap adopts the high material of physical strength.
Further, described end cap adopts stainless steel material.
Further, leave space between the extension of described end cap and described division module.
Further, the mode that described end cap adopts half-thread to be equipped with interference fit is connected with described side neck, and described half-thread refers on the outer wall of described end cap and is processed with screw thread, and undressed screw thread on the correspondence position of the inwall of described side neck.
Further, fill with at the threaded hole place of described end cap fluid sealant.
Further, described fluid sealant is thread locking glue.
Further, the end of described end cap is provided with hasp.
Further, between described end cap, described retaining element and described photomultiplier, directly connect.
Further, the extension of described end cap and supporting part are integral type or independent separately.
Compared with prior art, withstand voltage anti-loosening detector of the present invention occurs to become flexible by the constant shell of avoiding of the distance that keeps the relative end cap of photomultiplier, no longer rely on photomultiplier and/or scintillator to be connected with contact friction or glue between shell, not there will be photomultiplier and/or scintillator and shell to produce the situation of axial relative displacement.And can guarantee well concentric and tolerance, and structure cylinder list, easy to assembly, cost is low.
The accompanying drawing explanation
Fig. 1 is the assembly structure schematic diagram of the detector of prior art.
Fig. 2 is assembly structure schematic diagram of the present invention.
The assembly structure enlarged drawing of Fig. 3 housing end cap of the present invention and side neck.
Embodiment
Technical conceive of the present invention is: by the constant shell of avoiding of the distance that keeps the relative end cap of photomultiplier, occur to become flexible.Specific implementation is: a retaining element is installed between photomultiplier and division module, end cover designs is become to comprise extension and supporting part, retaining element is close in extension, and the conduction orientation of exerting all one's strength, from the end cap to the retaining element, finally arrives photomultiplier.This mode no longer relies on photomultiplier and/or scintillator to be connected with contact friction or glue between shell, not there will be photomultiplier and/or scintillator and shell to produce the situation of axial relative displacement.
Below in conjunction with specific embodiment, describe the present invention.
As shown in Figure 2, withstand voltage anti-loosening detector of the present invention comprises shell, the photomultiplier in shell 1 and division module 2, the retaining element 5 between photomultiplier 1 and division module 2 that is provided with side neck 3 and end cap 4.
One end of retaining element 5 is made the arc be complementary with photomultiplier 1 end, and the contact area for increase with photomultiplier, to reduce local pressure, avoids photomultiplier 1 to damage.The shape of retaining element 5 and photomultiplier 1 and side neck 3 are complementary, when photomultiplier 1 and side neck 3 are when cylindric, retaining element 5 is preferably annular, so not only easily processing, and be located on the same axis by the center of the center by retaining element 5 and photomultiplier 1, and, by the inwall close contact of the outer wall of retaining element 5 and shell side neck 3, the location that can be conducive to photomultiplier 1 is placed in the middle.Retaining element 5 adopts the high insulating material of physical strength, is mainly to consider that retaining element 5 will bear the power from end cap 4 and photomultiplier 1, and will prevent photomultiplier 1 or division module 2 electric discharges.When detector is applied in hot environment, the material of retaining element 5 also needs to have performance high temperature resistant and that thermal expansivity is little, and retaining element 5 is because of thermal expansion extruding photomultiplier 1 when avoiding high temperature.Comprehensive above factor, retaining element 5 can adopt the materials such as POM, PPS.
End cap 4 comprises extension 41 and supporting part 42.Retaining element 5, between division module 2 and side neck 3, and is close in extension 41, and supporting part 42 is for supporting extension 41, and the conduction orientation of exerting all one's strength by such design from end cap 4 to retaining element 5, finally arrives photomultiplier 1.Extension 41 meets at right angles and contacts with retaining element 5, to increase lifting surface area.The inside of supporting part 42 is horn-like structure, and its thick mouthful of end is connected with extension 41, and its thin mouthful of end is positioned at the end of side neck 3.When the assembling detector, fluid sealant pours into and flows to thick mouthful of end from thin mouthful of end of supporting part 42, is conducive to gas and discharges, and reduces bubble, makes division module stressed more even.End cap 4 adopts the high material of physical strength, is preferably stainless steel material, is mainly to consider that stainless steel material hardness is high, easily processing, and highly versatile, cost is low.When the extension 41 of end cap 4 adopts stainless steel material, in order to prevent the voltage divider electric discharge, between extension 41 and division module 2, leave space.In addition, the extension of end cap 4 and supporting part can be integral type, also can be independent separately.When the size of detector photomultiplier used is different, can realize by the mode of changing the integral type end cap or the mode of only changing the extension of end cap.
For make between end cap 4 and side neck 3 be connected more solid and reliable, the mode that end cap 4 adopts half-thread to be equipped with interference fit is connected with side neck 3, described half-thread refers on the outer wall of end cap 4 and is processed with screw thread, and undressed screw thread on the correspondence position of the inwall of side neck 3.Adopting the connected mode of half-thread, is mainly because the field of detector size being had relatively high expectations in well logging while drilling etc. adopts the permalloy that physical strength is high to make probe body usually, causes shell thinner and can't machining screw.For further improving end cap 4 and the firm degree of side neck 3 in the half-thread junction, fill with at the threaded hole place of end cap 4 fluid sealant, is preferably thread locking glue.The end of end cap 4 is provided with hasp 43, in order to fully be connected with side neck 3.
In the present invention, owing to directly connecting between end cap 4, retaining element 5 and photomultiplier 1, thereby can guarantee well concentric and tolerance, and simple in structure, easy to assembly, and cost is low.
In addition, the present invention avoids probe body that loosening technical conceive occurs being applicable to scintillation detector, also being applicable to the photometry module without scintillator by the relative distance that keeps photomultiplier and end cap is constant.
Claims (17)
1. a withstand voltage anti-loosening detector, comprise shell, photomultiplier and division module, described shell comprises end cap and side neck, it is characterized in that: described detector also comprises the retaining element between described photomultiplier and described division module, described end cap comprises extension and supporting part, described retaining element, between described division module and described side neck, and is close in described extension.
2. withstand voltage anti-loosening detector as claimed in claim 1 is characterized in that: the arc of an end of described retaining element for being complementary with described photomultiplier end.
3. withstand voltage anti-loosening detector as claimed in claim 2 is characterized in that: described retaining element be shaped as annular.
4. withstand voltage anti-loosening detector as claimed in claim 3, it is characterized in that: described retaining element adopts the high insulating material of physical strength.
5. withstand voltage anti-loosening detector as claimed in claim 4, it is characterized in that: described retaining element adopts material high temperature resistant and that thermal expansivity is little.
6. withstand voltage anti-loosening detector as claimed in claim 5, it is characterized in that: described retaining element adopts POM material or PPS material.
7. withstand voltage anti-loosening detector as claimed in claim 1, it is characterized in that: the extension of described end cap meets at right angles and contacts with described retaining element.
8. withstand voltage anti-loosening detector as claimed in claim 1, it is characterized in that: the inside of the supporting part of described end cap is horn-like structure, and its thick mouthful of end is connected with the extension of described end cap, and its thin mouth is held the end that is positioned at described side neck.
9. as withstand voltage anti-loosening detector as described in claim 7 or 8, it is characterized in that: described end cap adopts the high material of physical strength.
10. withstand voltage anti-loosening detector as claimed in claim 9, it is characterized in that: described end cap adopts stainless steel material.
11. withstand voltage anti-loosening detector, is characterized in that: between the extension of described end cap and described division module, leave space as claimed in claim 10.
12. withstand voltage anti-loosening detector as claimed in claim 1, it is characterized in that: the mode that described end cap adopts half-thread to be equipped with interference fit is connected with described side neck, described half-thread refers on the outer wall of described end cap and is processed with screw thread, and undressed screw thread on the correspondence position of the inwall of described side neck.
13. withstand voltage anti-loosening detector as claimed in claim 12 is characterized in that: fill with at the threaded hole place of described end cap fluid sealant.
14. withstand voltage anti-loosening detector as claimed in claim 13, it is characterized in that: described fluid sealant is thread locking glue.
15. withstand voltage anti-loosening detector as claimed in claim 13, it is characterized in that: the end of described end cap is provided with hasp.
16. withstand voltage anti-loosening detector, is characterized in that: directly connect between described end cap, described retaining element and described photomultiplier as claimed in claim 1.
17. withstand voltage anti-loosening detector as claimed in claim 1 is characterized in that: the extension of described end cap and supporting part are integral type or independent separately.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103330418A CN103439735A (en) | 2013-08-02 | 2013-08-02 | Pressure-resistant detector preventing loosening |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103330418A CN103439735A (en) | 2013-08-02 | 2013-08-02 | Pressure-resistant detector preventing loosening |
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| CN103439735A true CN103439735A (en) | 2013-12-11 |
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| CN2013103330418A Withdrawn CN103439735A (en) | 2013-08-02 | 2013-08-02 | Pressure-resistant detector preventing loosening |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105915897A (en) * | 2016-05-30 | 2016-08-31 | 浙江宇视科技有限公司 | Method and device for detecting whether outer cover of camera loosens, and camera |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1355438A (en) * | 2000-11-23 | 2002-06-26 | 中国科学院高能物理研究所 | Vibration damper for space sodium iodide crystal detector |
| US6545256B1 (en) * | 2000-04-20 | 2003-04-08 | Hamamatsu Photonics K.K. | Light receiving module and radiation detecting apparatus equipped with the same |
| CN1632539A (en) * | 2004-12-24 | 2005-06-29 | 北京源德生物医学工程有限公司 | Photoelectric detection device for single photon counter |
| CN201096508Y (en) * | 2007-11-02 | 2008-08-06 | 黑龙江省中贝技术有限公司 | Flash detector for material level detection |
-
2013
- 2013-08-02 CN CN2013103330418A patent/CN103439735A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6545256B1 (en) * | 2000-04-20 | 2003-04-08 | Hamamatsu Photonics K.K. | Light receiving module and radiation detecting apparatus equipped with the same |
| CN1355438A (en) * | 2000-11-23 | 2002-06-26 | 中国科学院高能物理研究所 | Vibration damper for space sodium iodide crystal detector |
| CN1632539A (en) * | 2004-12-24 | 2005-06-29 | 北京源德生物医学工程有限公司 | Photoelectric detection device for single photon counter |
| CN201096508Y (en) * | 2007-11-02 | 2008-08-06 | 黑龙江省中贝技术有限公司 | Flash detector for material level detection |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105915897A (en) * | 2016-05-30 | 2016-08-31 | 浙江宇视科技有限公司 | Method and device for detecting whether outer cover of camera loosens, and camera |
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Application publication date: 20131211 |