CN110211862A - The waterproof enclosure and manufacture craft of small size photomultiplier tube - Google Patents
The waterproof enclosure and manufacture craft of small size photomultiplier tube Download PDFInfo
- Publication number
- CN110211862A CN110211862A CN201910507467.8A CN201910507467A CN110211862A CN 110211862 A CN110211862 A CN 110211862A CN 201910507467 A CN201910507467 A CN 201910507467A CN 110211862 A CN110211862 A CN 110211862A
- Authority
- CN
- China
- Prior art keywords
- photomultiplier tube
- small size
- cable
- shell
- fairlead
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J43/00—Secondary-emission tubes; Electron-multiplier tubes
- H01J43/02—Tubes in which one or a few electrodes are secondary-electron emitting electrodes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J43/00—Secondary-emission tubes; Electron-multiplier tubes
- H01J43/04—Electron multipliers
- H01J43/28—Vessels, e.g. wall of the tube; Windows; Screens; Suppressing undesired discharges or currents
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
- H01J9/24—Manufacture or joining of vessels, leading-in conductors or bases
- H01J9/26—Sealing together parts of vessels
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Cable Accessories (AREA)
- Measurement Of Radiation (AREA)
Abstract
The invention discloses a kind of waterproof enclosures of small size photomultiplier tube, including shell and casting glue, the shell includes annular groove and cable fairlead, the cable fairlead protrudes into the annular groove along the axial component of the annular groove, small size photomultiplier tube bottom end is inserted into the shell, and insertion portion periphery wall and the outer casing inner wall are tightly connected；It is filled with the chamber portion that the interior of shell is constituted by the casting glue small size photomultiplier tube bottom end.The shell for accommodating small size photomultiplier tube lower part is arranged in the present invention, and it is filled with casting glues, then coats sealant in outside, the direct effect to small size photomultiplier tube is buffered, is improved service life, while waterproof and isolation effect are good, stable structure, so that properties of product are consolidated.
Description
Technical field
The present invention relates to the encapsulation technology field of photomultiplier tube, especially a kind of anti-water seal of small size photomultiplier tube
Dress and manufacture craft.
Background technique
Photomultiplier tube is the vacuum electron device that faint optical signal is converted into electric signal.Photomultiplier tube is used in optics
In measuring instrument and spectrometric instrument.The stability of photomultiplier tube is by device self character, working condition and environment item
What many factors such as part determined.It is many that pipe exports unstable situation during the work time, mainly has in pipe electrode welding not
Jumping characteristic shakiness phenomenon caused by good, connection loosing, the poor contact of cathode elastic slice, interpolar point discharge, arcing etc., signal are suddenly big
Suddenly small.
Traditional photomultiplier tube is sealed with following defect: the sealing of 1. single layers, failure rate are high；2. the design of encapsulating shell is simple,
It can only be easy to cause in chamber that there are bubbles by outlet encapsulating, this mode exhaust problem, and bubble position can not
Control.3. the cable (such as HDPE, PTFE etc.) of adhesives difficult for crust is without reliable sealing means.In order to guarantee to seal
Reliability, signal outgoing cable crust can only select the material for being easy bonding, such as PVC.PU is very high in compliance
It is not available in experiment.
Summary of the invention
The present invention proposes a kind of waterproof enclosure of small size photomultiplier tube, so that photomultiplier tube packaging effect is good, property
It can stablize.
In order to achieve the above-mentioned object of the invention, the present invention is the following technical schemes are provided: a kind of small size photomultiplier tube is prevented
Water seal dress, including shell and casting glue, the shell include annular groove and cable fairlead, the cable fairlead is along the ring
The axial component of shape slot protrudes into the annular groove, and small size photomultiplier tube bottom end is inserted into the shell, insertion portion
Periphery wall and the outer casing inner wall are tightly connected；The cavity that small size photomultiplier tube bottom end and the interior of shell are constituted
It is filled by the casting glue part.
Preferably, the waterproof enclosure further includes sealant, and shell described in the sealant covered section, part are described small
The junction of sized photo multiplier tube and the two.
Preferably, the sealant includes waterproof layer and separation layer, and the separation layer is coated on outside the waterproof layer.
Preferably, the separation layer is pyrocondensation tube layer.
Preferably, sealant is filled with inside the cable fairlead of the annular groove.
Preferably, the cable fairlead far from the annular groove is coated with molded seals.
Preferably, the casting glue be filled in the cable draw pipe port and small size photomultiplier tube bottom end it
Between.
In order to achieve the above-mentioned object of the invention, the present invention provides another technical solution: a kind of a kind of small size light as described above
The manufacture craft of the waterproof enclosure of electric multiplier tube, comprising:
(1) cable outer end is pierced by cable fairlead, injects casting glue from cable fairlead upper end, completes the sealing of cable；Electricity
The cable other end is soldered at divider pin；
(2) shell aperture is in upright position upward, injects appropriate casting glue inside；The insertion of photomultiplier tube bottom end is outer
In shell, the periphery wall and outer casing inner wall of insertion portion are fitted close；
(3) the total after overturning is fitted close is in handstand position, so that casting glue is flowed toward photomultiplier tube bottom end,
The casting glue of shortcoming, which to be inserted into around encapsulating cavity in cable fairlead, forms gas chamber；
(4) sealant tape is coated in the cylindrical outer side that photomultiplier tube and shell are formed, put on heat-shrink tube, use heat gun
Pyrocondensation is tightly fastened.
Preferably, (1) step, carries out injection molding encapsulation process between cable traversing through end and shell.
Preferably, (2), outer casing inner wall is arranged can shelve the step of photomultiplier transit bottom of the tube to step, outside the photomultiplier tube
Peripheral wall is fitted close with the step.
Compared with prior art, the invention has the following advantages that setting accommodates 5 inches of small size photomultiplier tubes below
The shell of lower part, it is filled with casting glues, then coat sealant in outside, buffer the direct work to small size photomultiplier tube
With improving service life, while waterproof and isolation effect are good, stable structure, so that properties of product are consolidated.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
The structure shown according to these attached drawings obtains other attached drawings.
Fig. 1 is a kind of structural schematic diagram of the waterproof enclosure of small size photomultiplier tube of the invention；
Diagram label:
1-1, annular groove；1-2, conducting wire fairlead；1-3, drainage trough；2-1, casting glue；2-2, casting glue；3, gas chamber；4-
1, butyl rubber；4-2, heat-shrinkable T bush；5, molded seals；6, pin；7, wiring board；8, cable；9, small size photomultiplier transit
Pipe.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiment is only a part of the embodiments of the present invention, instead of all the embodiments.Base
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts it is all its
His embodiment, shall fall within the protection scope of the present invention.
It is to be appreciated that if relating to directionality instruction (such as up, down, left, right, before and after ...) in the embodiment of the present invention,
Then directionality instruction be only used for explain under a certain particular pose (as shown in the picture) between each component relative positional relationship,
Motion conditions etc., if the particular pose changes, directionality instruction is also correspondingly changed correspondingly.
In addition, being somebody's turn to do " first ", " second " etc. if relating to the description of " first ", " second " etc. in the embodiment of the present invention
Description be used for description purposes only, be not understood to indicate or imply its relative importance or implicitly indicate indicated skill
The quantity of art feature." first " is defined as a result, the feature of " second " can explicitly or implicitly include at least one spy
Sign.It in addition, the technical solution between each embodiment can be combined with each other, but must be with those of ordinary skill in the art's energy
It is enough realize based on, will be understood that the knot of this technical solution when conflicting or cannot achieve when occurs in the combination of technical solution
Conjunction is not present, also not the present invention claims protection scope within.
As shown in Figure 1, a kind of waterproof enclosure of small size photomultiplier tube 9, including shell and casting glue, the shell packet
8 fairlead of annular groove 1-1 and cable is included, 8 fairlead of cable protrudes into the annular along the axial component of the annular groove 1-1
Slot 1-1,9 bottom end of small size photomultiplier tube are inserted into the shell, and insertion portion periphery wall and the outer casing inner wall are close
Envelope connection；9 bottom end of small size photomultiplier tube is filled out with the chamber portion that the interior of shell is constituted by the casting glue 2-1
It fills.
Small size photomultiplier tube 9 is erected in shell upper, then fills casting glue 2-1 inside the shell, by small size light
It is sealed up between electric multiplier tube 9 and shell, it is ensured that stability and waterproofness between the two.Especially casting glue 2-1 is filled in
Close to 9 bottom end of small size photomultiplier tube.
It is partially protruded into annular groove 1-1 in 8 fairlead of cable, convenient for the extraction of conducting wire, while convenient for being formed inside the shell
Gas chamber 3 guarantees the space that casting glue 2-1 expands with heat and contract with cold, and makes to coat the glue bubble-free around assist side 7.
Waterproof enclosure further includes sealant, shell described in covered section, the part small size photomultiplier tube 9 and two
The junction of person is set near shell and 9 junction of small size photomultiplier tube, to waterproof seal herein into one
Step is improved.
Specific sealant includes waterproof layer and separation layer, and separation layer is coated on outside waterproof layer, and waterproof layer is directly and shell
It is contacted near 9 junction of small size photomultiplier tube；Wherein separation layer is pyrocondensation tube layer.
The wiring board 7 connecting with the small size photomultiplier tube 9 is embedded in casting glue 2-1.Wiring board 7 is directly fixed
On the bottom face of small size photomultiplier tube 9, by 7 extraction wire of wiring board, conducting wire exports encapsulating structure by 8 fairlead of cable
Outside.
For improve 8 fairlead of cable in conducting wire waterproof seal, close to the annular groove 1-1 the cable 8
Sealant is filled with inside fairlead, i.e. conducting wire outer wall and cable 8 draws filling with sealant between inside pipe wall, so that waterproof performance
Enhancing.Molded seals 5 especially are coated in 8 fairlead of the cable far from the annular groove 1-1, more make product
Waterproof seal enhancing.
Wherein the sealant at this is HDPE casting glue 2-2.Shell is made of ABS material.
For interior of shell, casting glue 2-2 is filled in the cable 8 and draws pipe port and the small size photomultiplier tube
Between 9 bottom ends, gas chamber 3 is the groove structure that 8 fairlead of cable protrudes into part surrounding.
The production method of this waterproof enclosure the following steps are included:
1, cable 8 is passed through into 8 fairlead of cable, low-pressure injection molding is done on low-pressure injection molding machine, then infused from fairlead upper end
Enter casting glue 2-2, completes the sealing of cable 8；
2, welding cable 8 is to wiring board 7, then welds at wiring board 7 to pin 6, so that photomultiplier tube has work electricity
Start work after pressure, and obtained electric signal is transmitted to electronics by divider and cable 8；
3, shell is in upright position, injects appropriate casting glue 2-1 inside；
4, when upright position state in photomultiplier tube bottom end insertion shell, at insertion portion periphery wall and outer casing inner wall step
It is fitted close, adhesive tape is wound on the outside of contact surface；
5, overturning total is in handstand position, so that casting glue 2-1 is flowed along drainage trough 1-3 toward photomultiplier tube bottom end
Dynamic, the casting glue 2-1 of shortcoming, which to be inserted into around encapsulating cavity in 8 fairlead of cable, forms gas chamber 3；
6, sealant tape is coated in the cylindrical outer side that photomultiplier tube and shell are formed, puts on heat-shrink tube, uses heat gun
Pyrocondensation is tightly fastened.
The present invention has following advantages:
1. dual-seal improves reliability；
2. interior of shell has drainage trough 1-3, the special designings such as gas chamber 3 are fallen later so that encapsulating mode is changed to big mouth into glue
Vertical mode, making glue, all gas all in gas chamber 3 guarantees that device to be protected is needed tightly to be wrapped up by glue in the curing process.
3. the sealing of cable 8 uses the dedicated epoxy sealing of internal layer HDPE, the dual sealing manner of outer layer low-pressure injection molding sealing is protected
Demonstrate,prove the reliability that HDPE cable 8 seals.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (10)
1. a kind of waterproof enclosure of small size photomultiplier tube (9), it is characterised in that: including shell and casting glue, the shell
Including annular groove (1-1) and cable (8) fairlead, cable (8) fairlead is stretched along the axial component of the annular groove (1-1)
Enter the annular groove (1-1), small size photomultiplier tube (9) bottom end is inserted into the shell, insertion portion periphery wall with
The outer casing inner wall is tightly connected；The chamber portion that small size photomultiplier tube (9) bottom end and the interior of shell are constituted
It is filled by the casting glue.
2. the waterproof enclosure of small size photomultiplier tube (9) according to claim 1, it is characterised in that: the waterproof enclosure
It further include sealant, shell described in the sealant covered section, the part small size photomultiplier tube (9) and the two
Junction.
3. the waterproof enclosure of small size photomultiplier tube (9) according to claim 2, it is characterised in that: the sealant packet
Waterproof layer and separation layer are included, the separation layer is coated on outside the waterproof layer.
4. the waterproof enclosure of small size photomultiplier tube (9) according to claim 3, it is characterised in that: the separation layer is
Pyrocondensation tube layer.
5. the waterproof enclosure of small size photomultiplier tube (9) according to claim 1, it is characterised in that: close to the annular
Sealant is filled with inside the cable (8) fairlead of slot (1-1).
6. the waterproof enclosure of small size photomultiplier tube (9) according to claim 1, it is characterised in that: far from the annular
The cable (8) fairlead of slot (1-1) is coated with molded seals (5).
7. the waterproof enclosure of small size photomultiplier tube (9) according to claim 1, it is characterised in that: the casting glue is filled out
It fills and is drawn between pipe port and the small size photomultiplier tube (9) bottom end in the cable (8).
8. a kind of manufacture craft of the waterproof enclosure of small size photomultiplier tube (9) as described in claim 1-7 is any, feature
It is: includes:
(1) cable (8) outer end is pierced by cable (8) fairlead, injects casting glue (2-2) from cable (8) fairlead upper end, completes electricity
The sealing of cable (8)；Cable (8) other end is soldered at divider pin (6)；
(2) shell aperture is in upright position upward, injects appropriate casting glue (2-1) inside；The insertion of photomultiplier tube bottom end is outer
In shell, the periphery wall and outer casing inner wall of insertion portion are fitted close；
(3) the total after overturning is fitted close is in handstand position, so that casting glue (2-1) is flowed toward photomultiplier tube bottom end,
The casting glue (2-1) of shortcoming, which to be inserted into around encapsulating cavity in cable (8) fairlead, forms gas chamber (3)；
(4) sealant tape is coated in the cylindrical outer side that photomultiplier tube and shell are formed, put on heat-shrink tube, with heat gun pyrocondensation,
It is tightly fastened.
9. manufacture craft according to claim 8, it is characterised in that: step (1), cable (8) between traversing through end and shell into
Row injection molding encapsulation process.
10. manufacture craft according to claim 8, it is characterised in that: (2), outer casing inner wall setting can shelve photoelectricity times to step
Increase the step of bottom of the tube, the photomultiplier tube periphery wall is fitted close with the step.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910507467.8A CN110211862B (en) | 2019-06-12 | 2019-06-12 | Waterproof packaging and manufacturing process of small-size photomultiplier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910507467.8A CN110211862B (en) | 2019-06-12 | 2019-06-12 | Waterproof packaging and manufacturing process of small-size photomultiplier |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110211862A true CN110211862A (en) | 2019-09-06 |
| CN110211862B CN110211862B (en) | 2020-07-17 |
Family
ID=67792274
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910507467.8A Active CN110211862B (en) | 2019-06-12 | 2019-06-12 | Waterproof packaging and manufacturing process of small-size photomultiplier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110211862B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111564359A (en) * | 2020-05-14 | 2020-08-21 | 中国科学院高能物理研究所 | Waterproof packaging device and packaging method |
| CN111968906A (en) * | 2020-09-14 | 2020-11-20 | 中国科学院高能物理研究所 | Oil-proof packaging structure of photomultiplier, photomultiplier and oil-proof packaging method |
| CN113327835A (en) * | 2020-09-29 | 2021-08-31 | 湖南博大光电科技有限公司 | Waterproof device for photomultiplier |
| CN113555271A (en) * | 2021-05-21 | 2021-10-26 | 闫琪明 | Sealing waterproof device for photomultiplier |
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| CN101071705A (en) * | 2007-06-07 | 2007-11-14 | 中国科学院紫金山天文台 | Composite packaging method for photomultiplier tube |
| CN106783501A (en) * | 2016-12-21 | 2017-05-31 | 中国科学院高能物理研究所 | A kind of large scale photomultiplier waterproof encapsulation structure and method for packing |
| US20170276804A1 (en) * | 2016-03-22 | 2017-09-28 | Ge Energy Oilfield Technology, Inc. | Integrated Nuclear Sensor |
| CN209947793U (en) * | 2019-06-12 | 2020-01-14 | 中国科学院高能物理研究所 | Waterproof packaging of small-sized photomultiplier |
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2019
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101071705A (en) * | 2007-06-07 | 2007-11-14 | 中国科学院紫金山天文台 | Composite packaging method for photomultiplier tube |
| US20170276804A1 (en) * | 2016-03-22 | 2017-09-28 | Ge Energy Oilfield Technology, Inc. | Integrated Nuclear Sensor |
| CN106783501A (en) * | 2016-12-21 | 2017-05-31 | 中国科学院高能物理研究所 | A kind of large scale photomultiplier waterproof encapsulation structure and method for packing |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111564359A (en) * | 2020-05-14 | 2020-08-21 | 中国科学院高能物理研究所 | Waterproof packaging device and packaging method |
| CN111564359B (en) * | 2020-05-14 | 2021-11-26 | 中国科学院高能物理研究所 | Waterproof packaging device and packaging method |
| CN111968906A (en) * | 2020-09-14 | 2020-11-20 | 中国科学院高能物理研究所 | Oil-proof packaging structure of photomultiplier, photomultiplier and oil-proof packaging method |
| CN111968906B (en) * | 2020-09-14 | 2021-07-06 | 中国科学院高能物理研究所 | Oil-proof packaging structure of photomultiplier, photomultiplier and oil-proof packaging method |
| CN113327835A (en) * | 2020-09-29 | 2021-08-31 | 湖南博大光电科技有限公司 | Waterproof device for photomultiplier |
| CN113555271A (en) * | 2021-05-21 | 2021-10-26 | 闫琪明 | Sealing waterproof device for photomultiplier |
| CN113555271B (en) * | 2021-05-21 | 2024-04-19 | 闫琪明 | Sealing waterproof device for photomultiplier |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110211862B (en) | 2020-07-17 |
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