Search

CN-121983497-A - Packaging device and method for photomultiplier

CN121983497ACN 121983497 ACN121983497 ACN 121983497ACN-121983497-A

Abstract

The invention discloses a packaging device and a packaging method for a photomultiplier, and particularly relates to the technical field of photomultiplier packaging, which comprises a base, wherein a photomultiplier core component is fixedly installed on the base, pins of the photomultiplier core component penetrate through the base, a glass cover window is arranged at the top end of the base, the photomultiplier core component is packaged between the glass cover window and the base in a vacuum manner, a sealing bottom frame is arranged at the bottom end of the base, a packaging top cover is arranged at the top end of the sealing bottom frame, the glass cover window is positioned in the packaging top cover, shielding layers are arranged on the sealing bottom frame and the inner wall of the packaging top cover, a side window is arranged on one side of the packaging top cover, a cooling piece is arranged on one side, far away from the side window, of the packaging top cover, of the photomultiplier core component is packaged by arranging the base, the sealing bottom frame and the packaging top cover, and multistage sealing of the photomultiplier core component can be realized, so that the packaging effect of the whole photomultiplier is improved.

Inventors

  • QUAN JIANYIN

Assignees

  • 南京永纪光电科技有限公司

Dates

Publication Date
20260505
Application Date
20251226

Claims (8)

  1. 1. A packaging device of a photomultiplier comprises a base (1), and is characterized in that a photomultiplier core assembly (2) is fixedly installed on the base (1), pins of the photomultiplier core assembly (2) penetrate through the base (1), a glass cover window (3) is arranged at the top end of the base (1), the photomultiplier core assembly (2) is vacuum packaged between the glass cover window (3) and the base (1), a sealing bottom frame (4) is arranged at the bottom end of the base (1), a packaging top cover (5) is arranged at the top end of the sealing bottom frame (4), the glass cover window (3) is located in the packaging top cover (5), shielding layers are arranged on the inner walls of the sealing bottom frame (4) and the packaging top cover (5), a side window (501) is arranged on one side of the packaging top cover (5) away from the side window (501), an inner supporting piece (8) is arranged at the top and the bottom of the packaging top cover (5), a sealing bottom end (51) is arranged at the bottom end of the packaging top cover (5), a sealing gasket (51) is arranged at the bottom end of the sealing top end (51), the lower surface of the sealing top gasket (53) is in contact with the upper surface of the glass cover window (3).
  2. 2. The packaging device of the photomultiplier tube according to claim 1, wherein a first sealing clamping groove (101) is formed in the top end of the base (1), a first sealing gasket (11) is movably clamped in the first sealing clamping groove (101), the bottom of the glass cover window (3) is movably clamped in the first sealing clamping groove (101), the bottom end of the glass cover window (3) is in contact with the upper surface of the first sealing gasket (11), a first packaging groove (102) is formed in the outer side of the top of the first sealing clamping groove (101), a first packaging adhesive (12) is arranged in the first packaging groove (102), and the glass cover window (3) is fixed on the base (1) through the first packaging adhesive (12).
  3. 3. The packaging device of the photomultiplier tube according to claim 2, wherein a plurality of connecting longitudinal frames (7) distributed in an annular array are fixedly arranged at the bottom end of the base (1), a bottom support disc (71) is fixedly arranged at the bottom ends of the connecting longitudinal frames (7), the bottom support disc (71) is movably clamped in the sealing bottom frame (4), a sealing inner pad (72) is fixedly arranged at the bottom end of the bottom support disc (71), pins of the photomultiplier core assembly (2) fixedly penetrate through the bottom support disc (71), the pins of the photomultiplier core assembly (2) movably penetrate through the sealing inner pad (72), the pins of the photomultiplier core assembly (2) penetrate through the bottom end of the sealing bottom frame (4), and the lower surface of the sealing inner pad (72) is in contact with the inner lower wall of the sealing bottom frame (4).
  4. 4. The packaging device of the photomultiplier tube according to claim 3, wherein a second sealing clamping groove (401) is formed in the inner side of the top end of the sealing bottom frame (4), a second sealing gasket (41) is movably clamped in the second sealing clamping groove (401), the bottom of the base (1) is movably clamped in the second sealing clamping groove (401), the bottom end of the base (1) is in contact with the upper surface of the second sealing gasket (41), a second packaging groove (402) is formed in the outer side of the top of the second sealing clamping groove (401), a second packaging adhesive (42) is arranged in the second packaging groove (402), and the base (1) is fixed on the sealing bottom frame (4) through the second packaging adhesive (42).
  5. 5. The packaging device of the photomultiplier tube according to claim 4, wherein a third sealing clamping groove (403) is formed in the outer side of the top end of the sealing bottom frame (4), a third sealing gasket (43) is movably clamped in the third sealing clamping groove (403), the bottom thread of the packaging top cover (5) is clamped in the third sealing clamping groove (403), the bottom end of the packaging top cover (5) is in contact with the upper surface of the third sealing gasket (43), a third packaging adhesive (44) is arranged on the top of the third sealing clamping groove (403), and the packaging top cover (5) is fixed on the sealing bottom frame (4) through the third packaging adhesive (44).
  6. 6. The packaging device of the photomultiplier according to claim 5, wherein the cooling piece (6) comprises a cooling outer frame (61), the cooling outer frame (61) is fixedly clamped on one side, far away from the side window (501), of the packaging top cover (5), a heat conducting pad (62) is arranged on the inner side of the cooling outer frame (61), the inner side of the heat conducting pad (62) is in contact with the outer wall of the window (3) of the glass cover, the position of the heat conducting pad (62) corresponds to the position of an electron multiplication system in the photomultiplier core assembly (2), liquid guide heads (611) are uniformly formed at the top and the bottom of the outer side of the cooling outer frame (61), and connectors (63) are fixedly arranged at the end parts of the liquid guide heads (611).
  7. 7. The packaging device of a photomultiplier according to claim 6, wherein the inner supporting member (8) comprises an inner supporting air bag (81), the inner supporting air bag (81) is fixedly arranged on the inner side of the packaging top cover (5), a connecting pipe (811) is integrally formed on the outer side of the inner supporting air bag (81), the connecting pipe (811) is fixedly clamped on the packaging top cover (5), and a valve (82) is fixedly arranged at the outer end of the connecting pipe (811).
  8. 8. A packaging method of a packaging device using the photomultiplier tube according to claim 7, comprising the steps of: Firstly, pre-fixing a photomultiplier core assembly (2) on a base (1), then movably clamping the bottom of a glass cover window (3) in a first sealing clamping groove (101) in a vacuum environment, enabling the bottom end of the glass cover window (3) to be in contact with the upper surface of a first sealing gasket (11), packaging the fixed base (1) and the glass cover window (3) by using a first packaging adhesive (12), vacuum packaging key components of the photomultiplier core assembly (2) between the glass cover window (3) and the base (1), and enabling pins of the photomultiplier core assembly (2) to penetrate through the base (1); step two, movably clamping the bottom of the base (1) in a second sealing clamping groove (401) to enable the bottom end of the base (1) to be in contact with the upper surface of a second sealing gasket (41), and packaging and fixing the base (1) and the sealing bottom frame (4) by using a second packaging adhesive (42); At this time, pins of the photomultiplier core assembly (2) pass through the bottom end of the sealing bottom frame (4), and simultaneously the lower surface of the sealing inner pad (72) is contacted with the inner lower wall of the sealing bottom frame (4); Step three, the bottom thread of the packaging top cover (5) is clamped in a third sealing clamping groove (403), so that the bottom end of the packaging top cover (5) is contacted with the upper surface of a third sealing gasket (43), and the packaging top cover (5) is fixed through a third packaging adhesive (44); At the moment, the lower surface of the sealing top gasket (53) is contacted with the upper surface of the glass cover window (3), the end window tube (51) with the sealing top gasket (53) is propped against the top end of the glass cover window (3), the position of the heat conducting pad (62) corresponds to the position of an electron multiplication system in the photomultiplier core assembly (2), and the inner side of the heat conducting pad (62) is contacted with the outer wall of the glass cover window (3); Then, connecting the end part of the valve (82) with an external air inlet system, opening the air inlet system and the valve (82), slowly feeding air into the inner supporting air bag (81), expanding the inner supporting air bag (81), and positioning the glass cover window (3); When the whole photomultiplier is used for a long time subsequently, the end parts of the two connectors (63) can be respectively connected with an input port and an output port of a peripheral cooling liquid circulation system, the cooling liquid circulation system is started to circulate cooling liquid in the cooling outer frame (61), and the heat conduction and cooling are carried out through the heat conduction pad (62), so that the position of the electron multiplication system in the photomultiplier core assembly (2) is subjected to auxiliary cooling.

Description

Packaging device and method for photomultiplier Technical Field The invention relates to the technical field of photomultiplier tube packaging, in particular to a photomultiplier tube packaging device and method. Background The photomultiplier is a photoelectric detector with extremely high sensitivity, can convert weak light signals into measurable electric signals and realize current gain which is up to millions of times, and the core working principle is based on external photoelectric effect and secondary electron emission and mainly comprises key components such as photocathode, electron multiplication system (dynode), anode and the like. The traditional photomultiplier is packaged by adopting a glass-metal sealing packaging structure, the sealing performance is good, but the glass material is high in brittleness, weak in vibration resistance and impact resistance, and easy to break in severe environments such as industrial field and vehicle-mounted detection, so that the normal use of the photomultiplier is affected. Disclosure of Invention The present invention is directed to a packaging device and method for a photomultiplier tube, which solves the above-mentioned problems in the prior art. In order to achieve the above purpose, the packaging device of the photomultiplier comprises a base, wherein a photomultiplier core assembly is fixedly installed on the base, pins of the photomultiplier core assembly penetrate through the base, a glass cover window is arranged at the top end of the base, the photomultiplier core assembly is packaged between the glass cover window and the base in a vacuum mode, a sealing bottom frame is arranged at the bottom end of the base, a packaging top cover is arranged at the top end of the sealing bottom frame, the glass cover window is arranged in the packaging top cover, shielding layers are arranged on the sealing bottom frame and the inner wall of the packaging top cover, side windows are arranged on one side of the packaging top cover, cooling pieces are arranged on one side, far away from the side windows, of the packaging top cover, inner supporting pieces are arranged on the top and the bottom of the packaging top cover, an end window pipe is fixedly clamped in the middle of the top end of the packaging top cover, an end glass window is fixedly installed at the bottom of the inner side of the end window pipe, a sealing top gasket is fixedly installed at the bottom end of the end window pipe, and the lower surface of the sealing top gasket is in contact with the upper surface of the glass cover window. As a preferable technical scheme of the invention, a first sealing clamping groove is formed in the top end of the base, a first sealing gasket is movably clamped in the first sealing clamping groove, the bottom of the glass cover window is movably clamped in the first sealing clamping groove, the bottom end of the glass cover window is contacted with the upper surface of the first sealing gasket, a first packaging groove is formed in the outer side of the top of the first sealing clamping groove, a first packaging adhesive is arranged in the first packaging groove, and the glass cover window is fixed on the base through the first packaging adhesive. As a preferable technical scheme of the invention, a plurality of connecting longitudinal frames distributed in an annular array are fixedly arranged at the bottom end of the base, a bottom support disc is fixedly arranged at the bottom ends of the connecting longitudinal frames, the bottom support disc is movably clamped in a sealed bottom frame, a sealed inner pad is fixedly arranged at the bottom end of the bottom support disc, pins of the photomultiplier core assembly fixedly penetrate through the bottom support disc, the pins of the photomultiplier core assembly movably penetrate through the sealed inner pad, the pins of the photomultiplier core assembly penetrate through the bottom end of the sealed bottom frame, and the lower surface of the sealed inner pad is contacted with the inner lower wall of the sealed bottom frame. As a preferable technical scheme of the invention, a second sealing clamping groove is formed in the inner side of the top end of the sealing bottom frame, a second sealing gasket is movably clamped in the second sealing clamping groove, the bottom of the base is movably clamped in the second sealing clamping groove, the bottom end of the base is contacted with the upper surface of the second sealing gasket, a second packaging groove is formed in the outer side of the top of the second sealing clamping groove, a second packaging adhesive is arranged in the second packaging groove, and the base is fixed on the sealing bottom frame through the second packaging adhesive. As a preferable technical scheme of the invention, a third sealing clamping groove is formed in the outer side of the top end of the sealing bottom frame, a third sealing gasket is movably clamped in the third sealing clamping groov