Waterproof packaging structure of dynode photomultiplier

A technology of photomultiplier tubes and dynodes, which is applied in the direction of electron multiplier tubes, discharge tubes, electron tubes of secondary electron emitters, etc., and can solve the problems of unable to protect the signal leading out of the glass core column, poor sealing, and formation of bubbles, etc. , to achieve good waterproof effect, prevent crushing glass, and stable performance

Active Publication Date: 2019-10-08
INST OF HIGH ENERGY PHYSICS CHINESE ACADEMY OF SCI
View PDF6 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its disadvantages are: the glue will form bubbles in the cavity, and the seal is not tight;
At the same time, this structure is not under pressure and cannot protect the fragile signal lead-out glass core column, and there is a risk of fracturing the glass when used in deep water

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Waterproof packaging structure of dynode photomultiplier

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Apparently, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0022] It should be noted that if there is a directional indication (such as up, down, left, right, front, back...) in the embodiment of the present invention, the directional indication is only used to explain the position in a certain posture (as shown in the accompanying drawing). If the specific posture changes, the directional indication will also change accordingly.

[0023] In addition, if there are descriptions involving "first", "second" and so on ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a waterproof packaging structure of a dynode photomultiplier. The waterproof packaging structure includes a metal casing, a glue pouring casing, a first plug block, a second plug block and casting glue, wherein the metal casing is a bottomed straight tube structure with a big end up diameter, the glue pouring casing is erected in the metal casing, a lower end of the first plug block is erected on a step of the metal casing through structural glue, an upper end is in soft connection with the bottom of the dynode photomultiplier, and the metal casing is divided into upperand lower chambers. The waterproof packaging structure is advantaged in that the metal casing for accommodating the bottom of the dynode photomultiplier is arranged and is internally provided with the casting glue in soft contact with a dynode lead-out portion, the casting glue is cast in an open environment to prevent bubble generation, a sealing layer is wrapped outside, direct action of the water pressure on the bottom lead-out portion of the dynode photomultiplier can be avoided, glass crushing is prevented, the waterproof effect is good, the structure is stable, and products can operateunder the water for a long time.

Description

technical field [0001] The invention relates to the technical field of packaging of photomultiplier tubes, in particular to a waterproof package of dynode photomultiplier tubes. Background technique [0002] A photomultiplier tube is a vacuum electronic device that converts weak light signals into electrical signals. Photomultiplier tubes are used in optical measuring instruments and spectroscopic analysis instruments. A voltage divider needs to be connected to the bottom of the photomultiplier tube to work properly. The function of the voltage divider is to supply power to the photomultiplier tube on the one hand, and to extract the electrical signal from the photomultiplier tube on the other hand, and send it to the readout electronics through the cable for measurement. When the photomultiplier tube is used in water, the tail of the photomultiplier tube (including the voltage divider part) needs to be waterproofed to ensure that the photomultiplier tube with the voltage ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): H01J43/28H01J43/02
CPCH01J43/02H01J43/28
Inventor 秦中华徐美杭魏赛琦谢万杨艺
Owner INST OF HIGH ENERGY PHYSICS CHINESE ACADEMY OF SCI
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap