Photomultiplier packaging device and method
By designing a multi-stage sealing structure and cooling components for the base, sealed bottom frame, and encapsulation top cover, the problem of photomultiplier tubes being prone to breakage in harsh environments is solved, improving encapsulation stability and cooling effect, and enhancing the vibration resistance and encapsulation versatility of photomultiplier tubes.
Patent Information
- Application Number
- CN202511985731.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-26
- Publication Date
- 2026-05-05
AI Technical Summary
The glass encapsulation structure of traditional photomultiplier tubes is prone to cracking in harsh environments, affecting their normal use.
The system employs a multi-stage sealing structure consisting of a base, a sealed bottom frame, and a top enclosure, combined with internal support components and cooling components, to enhance the stability and cooling effect of the glass cover window. The photomultiplier core component is fixed by vacuum encapsulation and sealant.
This improves the packaging stability and vibration resistance of photomultiplier tubes, reduces damage to the glass cover window, achieves effective cooling of core components, and enhances packaging versatility.
Smart Images
Figure CN121983497A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of photomultiplier tube packaging technology, specifically to a photomultiplier tube packaging device and method. Background Technology
[0002] A photomultiplier tube (PMT) is a highly sensitive photodetector that can convert weak light signals into measurable electrical signals and achieve current gains of up to millions of times. Its core working principle is based on the external photoelectric effect and secondary electron emission. It mainly includes key components such as a photocathode, an electron multiplication system (DMT), and an anode. Because PMTs still have excellent detection capabilities under extremely low light conditions, they are widely used in many cutting-edge scientific and industrial fields such as high-energy physics experiments, nuclear medicine imaging, fluorescence spectroscopy analysis, environmental monitoring, and astronomical observation.
[0003] Traditional photomultiplier tubes are mostly packaged using a glass-metal sealing structure, which has good sealing performance. However, glass is brittle and has weak resistance to vibration and impact, making it prone to breakage in harsh environments such as industrial sites and vehicle-mounted detection, thus affecting the normal use of the photomultiplier tube. To address this issue, we propose a packaging device and method for photomultiplier tubes. Summary of the Invention
[0004] The purpose of this invention is to provide a packaging device and method for a photomultiplier tube to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, the present invention provides the following technical solution: a packaging device for a photomultiplier tube, comprising a base, on which a photomultiplier core component is fixedly mounted, the pins of the photomultiplier core component passing through the base, a glass cover window at the top of the base, the photomultiplier core component being vacuum-sealed between the glass cover window and the base, a sealing bottom frame at the bottom of the base, a packaging top cover at the top of the sealing bottom frame, the glass cover window being located within the packaging top cover, a shielding layer being provided on the inner walls of both the sealing bottom frame and the packaging top cover, a side window being provided on one side of the packaging top cover, a cooling component being provided on the side of the packaging top cover away from the side window, inner supports being provided at the top and bottom of the packaging top cover, an end window tube being fixedly fastened at the middle of the top of the packaging top cover, an end glass window being fixedly mounted on the bottom inner side of the end window tube, a sealing top gasket being fixedly mounted at the bottom of the end window tube, and the lower surface of the sealing top gasket contacting the upper surface of the glass cover window.
[0006] As a preferred embodiment of the present invention, a first sealing groove is provided at the top of the base, a first sealing gasket is movably engaged in the first sealing groove, the bottom of the glass cover window is movably engaged in the first sealing groove, the bottom end of the glass cover window is in contact with the upper surface of the first sealing gasket, a first encapsulation groove is provided on the outer side of the top of the first sealing groove, a first encapsulation adhesive is provided in the first encapsulation groove, and the glass cover window is fixed to the base by the first encapsulation adhesive.
[0007] As a preferred embodiment of the present invention, a plurality of connecting longitudinal frames arranged in a circular array are fixedly installed at the bottom end of the base, and a bottom support plate is fixedly installed at the bottom end of the plurality of connecting longitudinal frames. The bottom support plate is movably engaged with the sealed bottom frame, and a sealing inner gasket is fixedly installed at the bottom end of the bottom support plate. The pins of the photomultiplier core component are fixedly inserted through the bottom support plate, and the pins of the photomultiplier core component are movably inserted through the sealing inner gasket. The pins of the photomultiplier core component pass through the bottom end of the sealed bottom frame, and the lower surface of the sealing inner gasket contacts the lower inner wall of the sealed bottom frame.
[0008] As a preferred embodiment of the present invention, a second sealing groove is provided on the inner side of the top of the sealing base frame, and a second sealing gasket is movably engaged in the second sealing groove. The bottom of the base is movably engaged in the second sealing groove, and the bottom end of the base is in contact with the upper surface of the second sealing gasket. A second encapsulation groove is provided on the outer side of the top of the second sealing groove, and a second encapsulation adhesive is provided in the second encapsulation groove. The base is fixed to the sealing base frame by the second encapsulation adhesive.
[0009] As a preferred embodiment of the present invention, a third sealing groove is provided on the outer side of the top of the sealing bottom frame, a third sealing gasket is movably engaged in the third sealing groove, the bottom of the encapsulation top cover is threaded into the third sealing groove, the bottom end of the encapsulation top cover is in contact with the upper surface of the third sealing gasket, a third encapsulation adhesive is provided on the top of the third sealing groove, and the encapsulation top cover is fixed to the sealing bottom frame by the third encapsulation adhesive.
[0010] As a preferred embodiment of the present invention, the cooling component includes a cooling outer frame, which is fixedly snapped onto the side of the encapsulation top cover away from the side window. A thermally conductive pad is provided on the inner side of the cooling outer frame, and the inner side of the thermally conductive pad contacts the outer wall of the glass cover window. The position of the thermally conductive pad corresponds to the position of the electron multiplication system in the photomultiplication core component. Liquid guide heads are integrally formed on the top and bottom of the outer side of the cooling outer frame, and connectors are fixedly installed at the ends of the liquid guide heads.
[0011] As a preferred embodiment of the present invention, the inner support component includes an inner support airbag, which is fixedly installed on the inner side of the encapsulation top cover. A connecting tube is integrally formed on the outer side of the inner support airbag, and the connecting tube is fixedly snapped onto the encapsulation top cover. A valve is fixedly installed at the outer end of the connecting tube.
[0012] A packaging method for a photomultiplier tube packaging device includes the following steps: Step 1: First, pre-fix the photomultiplier core component onto the base. Then, in a vacuum environment, movably engage the bottom of the glass cover window into the first sealing slot, so that the bottom of the glass cover window contacts the upper surface of the first sealing gasket. Then, use the first encapsulating adhesive to seal and fix the base and the glass cover window, vacuum-sealing the key components of the photomultiplier core component between the glass cover window and the base. The pins of the photomultiplier core component pass through the base. Step 2: Movably engage the bottom of the base with the second sealing groove, so that the bottom end of the base contacts the upper surface of the second sealing gasket, and use the second sealing adhesive to seal and fix the base and the sealing bottom frame. At this time, the pins of the photomultiplier core component pass through the bottom end of the sealed bottom frame, and the lower surface of the sealed inner pad contacts the lower inner wall of the sealed bottom frame. Step 3: Thread the bottom of the top cover into the third sealing groove so that the bottom of the top cover contacts the upper surface of the third sealing gasket, and fix the top cover with the third sealing adhesive. At this time, the lower surface of the sealing top gasket contacts the upper surface of the glass cover window, and the end window tube with the sealing top gasket abuts against the top of the glass cover window. At the same time, the position of the thermal pad corresponds to the position of the electron multiplication system in the photomultiplication core component, and the inner side of the thermal pad contacts the outer wall of the glass cover window. Then, connect the end of the valve to the external air intake system, open the air intake system and the valve, and the gas slowly enters the inner support airbag. The inner support airbag expands and positions the glass cover window. When using the entire photomultiplier tube for an extended period of time, the ends of the two connectors can be connected to the input and output ports of the external coolant circulation system, respectively. The coolant circulation system can then be turned on to circulate the coolant in the outer frame. Through the heat conduction of the thermal pad, the electron multiplication system in the core photomultiplier component can be cooled.
[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. This photomultiplier tube encapsulates the core photomultiplier component by setting a base, a sealed bottom frame, and a top cover, which can achieve multi-level sealing of the core photomultiplier component, thereby improving the overall encapsulation effect of the photomultiplier tube.
[0014] 2. This photomultiplier tube increases the protective stability of the glass cover window by setting a top enclosure and using an end window tube to hold the top of the glass cover window. It also uses an internal support to further increase the stability of the glass cover window and reduce damage caused by external vibration.
[0015] 3. The photomultiplier tube is equipped with a cooling component and uses an external coolant circulation system to cool the electron multiplication system in the core photomultiplier component, preventing the photomultiplier tube from overheating and affecting the normal operation of surrounding components during prolonged use.
[0016] 4. This photomultiplier tube increases the packaging diversity of the photomultiplier tube by setting a top cover for packaging, opening a side window on one side to package a side-mounted photomultiplier tube, and setting an end window tube to package an end-mounted photomultiplier tube. Attached Figure Description
[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0018] Figure 1 This is a schematic diagram of the structure of the present invention.
[0019] Figure 2 This is a schematic diagram of the structural connections after the present invention has been disassembled.
[0020] Figure 3 This is a schematic diagram showing the structural connection of the base, photomultiplier core component, and glass cover window in this invention.
[0021] Figure 4 For the present invention Figure 3 Enlarged view of point A in the middle.
[0022] Figure 5 This is a schematic diagram showing the structural connection of the base, bottom support plate, and sealing bottom frame in this invention.
[0023] Figure 6 For the present invention Figure 5 Enlarged view of point B in the middle.
[0024] Figure 7 This is a schematic diagram showing the structural connection between the sealing bottom frame and the encapsulation top cover in this invention.
[0025] Figure 8 For the present invention Figure 7 A magnified view of point C in the middle.
[0026] Figure 9This is a schematic diagram of the encapsulation top cover in this invention.
[0027] Figure 10 This is a schematic diagram of the cooling component in this invention.
[0028] Figure 11 This is a schematic diagram of the internal support member in this invention.
[0029] In the diagram: 1. Base; 101. First sealing groove; 11. First sealing gasket; 102. First encapsulation groove; 12. First encapsulating adhesive; 2. Photomultiplier core component; 3. Glass cover window; 4. Sealing bottom frame; 401. Second sealing groove; 41. Second sealing gasket; 402. Second encapsulation groove; 42. Second encapsulating adhesive; 403. Third sealing groove; 43. Third sealing gasket; 44. Third encapsulating adhesive; 5. Encapsulation top cover; 501. Side window; 51. End window tube; 52. End glass window; 53. Sealing top gasket; 6. Cooling component; 61. Cooling outer frame; 611. Liquid guide head; 62. Thermal pad; 63. Connector; 7. Connecting longitudinal frame; 71. Bottom support plate; 72. Sealing inner gasket; 8. Inner support component; 81. Inner support airbag; 811. Connecting pipe; 82. Valve. Detailed Implementation
[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0031] Example: Figure 1-11 As shown, the present invention provides a packaging device for a photomultiplier tube, including a base 1, on which a photomultiplier core component 2 is fixedly mounted. The photomultiplier core component 2 mainly includes key components such as a photocathode, an electron multiplication system, and an anode. The photomultiplier core component 2 is pre-fixed on the base 1 to increase the stability of the subsequent photomultiplier tube packaging. A glass cover window 3 is provided at the top of the base 1. The key components of the photomultiplier core component 2 are vacuum-sealed between the glass cover window 3 and the base 1. The pins of the photomultiplier core component 2 pass through the base 1. A sealing bottom frame 4 is provided at the bottom of the base 1. A packaging top cover 5 is provided at the top of the sealing bottom frame 4. The glass cover window 3 is located in the packaging top cover 5. The inner walls of the sealing bottom frame 4 and the packaging top cover 5 are provided with shielding layers to increase the shielding effect of the entire packaging device and prevent external signal interference. A side window 501 is provided on one side of the top cover 5. By providing a side window 501 on one side of the top cover 5, the side-mounted photomultiplier tube can be packaged. The top center of the encapsulation cover 5 is fixedly provided with an end window tube 51, and an end glass window 52 is fixedly installed on the bottom inner side of the end window tube 51. By setting the end window tube 51 with the end glass window 52, the end window type photomultiplier tube can be encapsulated, thereby increasing the encapsulation diversity of the photomultiplier tube. A sealing top washer 53 is fixedly installed at the bottom end of the end window tube 51. The lower surface of the sealing top washer 53 contacts the upper surface of the glass cover window 3. By setting the end window tube 51 with the sealing top washer 53 to hold against the top of the glass cover window 3, the stability of the glass cover window 3 is increased and the damage caused by external vibration is reduced. A cooling element 6 is provided on the side of the top cover 5 away from the side window 501, and an inner support element 8 is provided on the top and bottom of the top cover 5.
[0032] A first sealing groove 101 is provided at the top of the base 1. A first sealing gasket 11 is movably engaged in the first sealing groove 101. The bottom of the glass cover window 3 is movably engaged in the first sealing groove 101. The bottom end of the glass cover window 3 contacts the upper surface of the first sealing gasket 11 to seal the base 1 and the glass cover window 3, thereby providing a first-level seal for the photomultiplier core component 2. A first encapsulation groove 102 is provided on the outer side of the top of the first sealing groove 101. A first encapsulation adhesive 12 is provided in the first encapsulation groove 102. The glass cover window 3 is fixed to the base 1 by the first encapsulation adhesive 12. The first encapsulation adhesive 12 is used to encapsulate and fix the base 1 and the glass cover window 3.
[0033] A second sealing groove 401 is provided on the inner side of the top of the sealing base frame 4. A second sealing gasket 41 is movably engaged in the second sealing groove 401. The bottom of the base 1 is movably engaged in the second sealing groove 401. The bottom end of the base 1 contacts the upper surface of the second sealing gasket 41 to seal between the base 1 and the sealing base frame 4, thereby providing a secondary seal for the bottom of the photomultiplier core component 2. A second encapsulation groove 402 is provided on the outer side of the top of the second sealing groove 401. A second encapsulation adhesive 42 is provided in the second encapsulation groove 402. The base 1 is fixed to the sealing base frame 4 by the second encapsulation adhesive 42. The base 1 and the sealing base frame 4 are encapsulated and fixed by the second encapsulation adhesive 42.
[0034] Multiple connecting longitudinal frames 7 arranged in a ring array are fixedly installed at the bottom of the base 1. A bottom support plate 71 is fixedly installed at the bottom of the multiple connecting longitudinal frames 7. The bottom support plate 71 is movably engaged in the sealed bottom frame 4. A sealing inner gasket 72 is fixedly installed at the bottom of the bottom support plate 71. The pins of the photomultiplier core component 2 are fixedly inserted through the bottom support plate 71. The pins of the photomultiplier core component 2 are movably inserted through the sealing inner gasket 72. The pins of the photomultiplier core component 2 pass through the bottom of the sealed bottom frame 4. The lower surface of the sealing inner gasket 72 contacts the lower inner wall of the sealed bottom frame 4, sealing the part where the pins of the photomultiplier core component 2 pass through the sealed bottom frame 4, thereby performing a three-level seal on the bottom of the photomultiplier core component 2.
[0035] A third sealing groove 403 is provided on the outer side of the top of the sealing base frame 4. A third sealing gasket 43 is movably engaged in the third sealing groove 403. The bottom of the encapsulation top cover 5 is threaded into the third sealing groove 403. The bottom end of the encapsulation top cover 5 contacts the upper surface of the third sealing gasket 43, and the encapsulation top cover 5 and the sealing base frame 4 are threadedly installed. In this way, the encapsulation top cover 5 protects the outside of the glass cover window 3 and prevents the glass cover window 3 from being damaged by uncontrollable external factors. A third sealing adhesive 44 is provided on the top of the third sealing groove 403. The encapsulation top cover 5 is fixed to the sealing base frame 4 by the third sealing adhesive 44.
[0036] The cooling component 6 includes a cooling frame 61, which is fixedly snapped onto the side of the top cover 5 away from the side window 501. A thermal pad 62 is provided on the inner side of the cooling frame 61, and the inner side of the thermal pad 62 contacts the outer wall of the glass cover window 3. The position of the thermal pad 62 corresponds to the position of the electron multiplication system in the photomultiplier core component 2. The top and bottom of the outer side of the cooling frame 61 are integrally formed with liquid guide heads 611, and the ends of the liquid guide heads 611 are fixedly installed with connectors 63. In specific use, the ends of the two connectors 63 are connected to the inlet and outlet of the external coolant circulation system, respectively. When using the entire photomultiplier tube, the coolant circulation system is turned on to circulate the coolant in the cooling frame 61. Through the heat conduction of the thermal pad 62, the electron multiplication system in the photomultiplier core component 2 is cooled, preventing the photomultiplier tube from increasing heat during long-term use and affecting the normal use of surrounding components.
[0037] The inner support component 8 includes an inner support airbag 81, which is fixedly installed inside the encapsulation top cover 5. A connecting tube 811 is integrally formed on the outer side of the inner support airbag 81, and the connecting tube 811 is fixedly snapped onto the encapsulation top cover 5. A valve 82 is fixedly installed at the outer end of the connecting tube 811. In the initial state, the inner support airbag 81 is in a contracted state, which makes it convenient for the encapsulation top cover 5 to be fitted onto the outside of the glass cover window 3. After the encapsulation top cover 5 is installed, the end of the valve 82 is connected to the external air intake system. The air intake system and the valve 82 are opened, and the gas slowly enters the inner support airbag 81. The inner support airbag 81 expands and positions the glass cover window 3, further increasing the stability of the glass cover window 3 and reducing damage caused by external vibration.
[0038] A packaging method for a photomultiplier tube packaging device includes the following steps: Step 1: First, pre-fix the photomultiplier core component 2 onto the base 1. Then, in a vacuum environment, movably engage the bottom of the glass cover window 3 into the first sealing slot 101, so that the bottom end of the glass cover window 3 contacts the upper surface of the first sealing gasket 11. Then, use the first encapsulating adhesive 12 to encapsulate and fix the base 1 and the glass cover window 3, vacuum encapsulating the key components of the photomultiplier core component 2 between the glass cover window 3 and the base 1. The pins of the photomultiplier core component 2 pass through the base 1. Step 2: Movably engage the bottom of the base 1 with the second sealing groove 401, so that the bottom end of the base 1 contacts the upper surface of the second sealing gasket 41, and use the second encapsulating adhesive 42 to seal and fix the base 1 and the sealing bottom frame 4. At this time, the pins of the photomultiplier core component 2 pass through the bottom end of the sealed bottom frame 4, and the lower surface of the sealed inner pad 72 contacts the lower inner wall of the sealed bottom frame 4. Step 3: Thread the bottom of the top cover 5 into the third sealing groove 403 so that the bottom end of the top cover 5 contacts the upper surface of the third sealing gasket 43, and fix the top cover 5 with the third encapsulating adhesive 44. At this time, the lower surface of the sealing top gasket 53 contacts the upper surface of the glass cover window 3, and the end window tube 51 with the sealing top gasket 53 abuts against the top of the glass cover window 3. At the same time, the position of the heat-conducting pad 62 corresponds to the position of the electron multiplication system in the photomultiplication core component 2, and the inner side of the heat-conducting pad 62 contacts the outer wall of the glass cover window 3. Subsequently, the end of valve 82 is connected to the external air intake system, the air intake system and valve 82 are opened, and the gas slowly enters the inner support airbag 81. The inner support airbag 81 expands and positions the glass cover window 3. When using the entire photomultiplier tube for an extended period of time, the ends of the two connectors 63 can be connected to the input and output ports of the external coolant circulation system, respectively. The coolant circulation system can be turned on to circulate the coolant in the outer frame 61. The heat is conducted and cooled by the thermal pad 62, thereby providing auxiliary cooling for the electron multiplication system in the photomultiplier core component 2.
[0039] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A packaging device for a photomultiplier tube, comprising a base (1), characterized in that: A photomultiplier core component (2) is fixedly mounted on the base (1). The pins of the photomultiplier core component (2) pass through the base (1). A glass cover window (3) is provided at the top of the base (1). The photomultiplier core component (2) is vacuum-sealed between the glass cover window (3) and the base (1). A sealing bottom frame (4) is provided at the bottom of the base (1). A top cover (5) is provided at the top of the sealing bottom frame (4). The glass cover window (3) is located in the top cover (5). The inner walls of the sealing bottom frame (4) and the top cover (5) are both equipped with shielding. The top cover (5) has a side window (501) on one side, and a cooling component (6) is provided on the side of the top cover (5) away from the side window (501). The top and bottom of the top cover (5) are provided with inner support components (8). The top center of the top cover (5) is fixedly fitted with an end window tube (51). An end glass window (52) is fixedly installed on the bottom inner side of the end window tube (51). A sealing top gasket (53) is fixedly installed at the bottom end of the end window tube (51). The lower surface of the sealing top gasket (53) is in contact with the upper surface of the glass cover window (3).
2. The packaging device for a photomultiplier tube according to claim 1, characterized in that: The base (1) has a first sealing groove (101) at its top, and a first sealing gasket (11) is movably engaged in the first sealing groove (101). The bottom of the glass cover window (3) is movably engaged in the first sealing groove (101). The bottom end of the glass cover window (3) is in contact with the upper surface of the first sealing gasket (11). The top outer side of the first sealing groove (101) has a first encapsulation groove (102), and a first encapsulation adhesive (12) is provided in the first encapsulation groove (102). The glass cover window (3) is fixed to the base (1) by the first encapsulation adhesive (12).
3. The packaging device for a photomultiplier tube according to claim 2, characterized in that: The base (1) has multiple connecting longitudinal frames (7) arranged in a ring array fixedly installed at its bottom end. The bottom end of the multiple connecting longitudinal frames (7) is fixedly installed with a bottom support plate (71). The bottom support plate (71) is movably engaged in the sealed bottom frame (4). The bottom end of the bottom support plate (71) is fixedly installed with a sealing inner gasket (72). The pin of the photomultiplier core component (2) is fixedly inserted through the bottom support plate (71). The pin of the photomultiplier core component (2) is movably inserted through the sealing inner gasket (72). The pin of the photomultiplier core component (2) passes through the bottom end of the sealed bottom frame (4). The lower surface of the sealing inner gasket (72) is in contact with the lower inner wall of the sealed bottom frame (4).
4. The packaging device for a photomultiplier tube according to claim 3, characterized in that: The top inner side of the sealing base frame (4) is provided with a second sealing groove (401), and a second sealing gasket (41) is movably locked in the second sealing groove (401). The bottom of the base (1) is movably locked in the second sealing groove (401). The bottom end of the base (1) is in contact with the upper surface of the second sealing gasket (41). The top outer side of the second sealing groove (401) is provided with a second encapsulation groove (402), and a second encapsulation adhesive (42) is provided in the second encapsulation groove (402). The base (1) is fixed on the sealing base frame (4) by the second encapsulation adhesive (42).
5. The packaging device for a photomultiplier tube according to claim 4, characterized in that: A third sealing groove (403) is provided on the outer side of the top of the sealing bottom frame (4). A third sealing gasket (43) is movably installed in the third sealing groove (403). The bottom of the encapsulation top cover (5) is threaded into the third sealing groove (403). The bottom end of the encapsulation top cover (5) is in contact with the upper surface of the third sealing gasket (43). A third encapsulation adhesive (44) is provided on the top of the third sealing groove (403). The encapsulation top cover (5) is fixed to the sealing bottom frame (4) by the third encapsulation adhesive (44).
6. The packaging device for a photomultiplier tube according to claim 5, characterized in that: The cooling component (6) includes a cooling frame (61), which is fixedly snapped onto the side of the top cover (5) away from the side window (501). A heat-conducting pad (62) is provided on the inner side of the cooling frame (61). The inner side of the heat-conducting pad (62) is in contact with the outer wall of the glass cover window (3). The position of the heat-conducting pad (62) corresponds to the position of the electron multiplication system in the photomultiplication core component (2). The top and bottom of the outer side of the cooling frame (61) are integrally formed with liquid guide heads (611), and the ends of the liquid guide heads (611) are fixedly installed with connectors (63).
7. The packaging device for a photomultiplier tube according to claim 6, characterized in that: The inner support component (8) includes an inner support airbag (81), which is fixedly installed on the inner side of the encapsulation top cover (5). A connecting tube (811) is integrally formed on the outer side of the inner support airbag (81), which is fixedly snapped onto the encapsulation top cover (5). A valve (82) is fixedly installed at the outer end of the connecting tube (811).
8. A packaging method for a packaging device using the photomultiplier tube of claim 7, characterized in that, Includes the following steps: Step 1: First, fix the photomultiplier core component (2) on the base (1). Then, in a vacuum environment, movably snap the bottom of the glass cover window (3) into the first sealing slot (101) so that the bottom end of the glass cover window (3) contacts the upper surface of the first sealing gasket (11). Then, use the first encapsulating adhesive (12) to encapsulate and fix the base (1) and the glass cover window (3) to vacuum encapsulate the key components of the photomultiplier core component (2) between the glass cover window (3) and the base (1). The pins of the photomultiplier core component (2) pass through the base (1). Step 2: Movably engage the bottom of the base (1) with the second sealing groove (401) so that the bottom end of the base (1) contacts the upper surface of the second sealing gasket (41), and use the second sealing adhesive (42) to seal and fix the base (1) and the sealing bottom frame (4). At this time, the pins of the photomultiplier core component (2) pass through the bottom end of the sealed bottom frame (4), and the lower surface of the sealed inner pad (72) contacts the lower inner wall of the sealed bottom frame (4); Step 3: Thread the bottom of the top cover (5) into the third sealing groove (403) so that the bottom end of the top cover (5) contacts the upper surface of the third sealing gasket (43), and fix the top cover (5) with the third encapsulating adhesive (44). At this time, the lower surface of the sealing top gasket (53) contacts the upper surface of the glass cover window (3), and the end window tube (51) with the sealing top gasket (53) abuts against the top of the glass cover window (3). At the same time, the position of the heat-conducting pad (62) corresponds to the position of the electron multiplication system in the photomultiplication core component (2), and the inner side of the heat-conducting pad (62) contacts the outer wall of the glass cover window (3). Subsequently, the end of the valve (82) is connected to the external air intake system, the air intake system and the valve (82) are opened, and the gas slowly enters the inner support airbag (81). The inner support airbag (81) expands and positions the glass cover window (3). When using the entire photomultiplier tube for an extended period of time, the ends of the two connectors (63) can be connected to the input and output ports of the external coolant circulation system, respectively. The coolant circulation system can be turned on to circulate the coolant in the outer frame (61) and provide auxiliary cooling to the electron multiplication system in the photomultiplier core component (2) through the heat conduction cooling pad (62).