Single-photon detector fixing device

Abstract

The invention relates to the technical field of communication, and particularly discloses a single photon detector fixing device which comprises a heat sink and an installation mechanism, the installation mechanism comprises a first clamping ring, a second clamping ring, a limiting ring, a locking assembly and a rubber ring, the first clamping ring is fixedly connected with the heat sink and located at the upper end of the heat sink, and the limiting ring is fixedly connected with the first clamping ring and located at the lower end of the heat sink. The first clamping ring is fixedly connected with the rubber ring and is embedded in the inner side of the first clamping ring, the second clamping ring is embedded in the first clamping ring, the rubber ring is fixedly connected with the second clamping ring and is embedded in one side of the second clamping ring, the number of the locking assemblies is multiple, and the locking assemblies are embedded in the second clamping ring. The locking assembly performs large-range size adjustment, can be suitable for installation of single-photon detectors in various shapes or other detectors, is not limited to installation of detectors of cylindrical structures, and improves the application range and practicability of the fixing equipment.

Description

Technical Field

[0001] The present invention relates to the field of communication technology, and in particular to a single-photon detector fixing device. Background Art

[0002] At present, in quantum communication technology, single-photon detectors are usually used to detect or detect quantum light, so as to obtain the information expressed or transmitted by the quantum state. The performance of single-photon detectors has a direct impact on the coding rate of the communication system. The performance of single-photon detectors is mainly related to the installation environment temperature and position stability. When the box where the single-photon detector is located is moved, there is a situation where the single-photon detector is not in close contact with the heat sink, which can easily cause the single-photon detector to shake, resulting in unstable performance of the single-photon detector and a low coding rate of the communication system.

[0003] The prior art CN217306519U provides a single-photon detector fixing device, including a first clamping structure, a first through hole is arranged inside and one side is cut to form a first opening, which is used to place and fix the single-photon detector through the first through hole. By setting the first opening on one side of the first clamping structure and using the first opening to lock the single-photon detector, the position of the single-photon detector is more stable and the performance of the single-photon detector is improved. By setting the second opening on one side of the second clamping structure and using the second opening to lock the first clamping structure, the first clamping structure and the single-photon detector are facilitated to be loaded and unloaded, and the detachability of the first clamping structure and the single-photon detector is improved.

[0004] However, in the prior art, the installation size range is small and only fine-tuning can be performed, and single-photon detectors of other shapes or sizes cannot be stably fixed and installed. Summary of the invention

[0005] The purpose of the present invention is to provide a single-photon detector fixing device, aiming to solve the technical problem in the prior art that the installation size range is small, only fine-tuning can be performed, and single-photon detectors of other shapes or sizes cannot be stably fixed and installed.

[0006] To achieve the above-mentioned purpose, the present invention adopts a single-photon detector fixing device, including a heat sink and a mounting mechanism, the mounting mechanism including a first clamping ring, a second clamping ring, a limiting ring, a locking assembly and a rubber ring, the first clamping ring is fixedly connected to the heat sink and is located at the upper end of the heat sink, the limiting ring is fixedly connected to the first clamping ring and embedded in the inner side of the first clamping ring, the second clamping ring is embedded in the interior of the first clamping ring, the rubber ring is fixedly connected to the second clamping ring and embedded in one side of the second clamping ring, the number of the locking assemblies is multiple groups, and the locking assemblies are respectively embedded in the interior of the second clamping ring.

[0007] The first clamping ring has an opening, and two sides of the opening have through holes and threaded holes.

[0008] The second clamping ring has a plurality of locking holes, the plurality of locking holes are evenly arranged inside the second clamping ring, and each group of locking components is respectively embedded inside the corresponding locking holes.

[0009] Among them, each group of the locking assembly includes a spring, a locking shaft and an adjusting shaft, the spring is embedded in the locking hole, the locking shaft is embedded in the locking hole, and one end of the locking shaft passes through the spring and the locking hole, one end of the adjusting shaft is rotatably connected to the locking shaft and is located on one side of the locking shaft, and the other end of the adjusting shaft is threadedly connected to the locking hole.

[0010] Among them, the locking shaft includes a shaft column, a rubber sleeve, a limit plate and a bearing. The rubber sleeve is bonded to the shaft column and sleeved on one end of the shaft column. The shaft column is fixedly connected to the limit plate and is located on one side of the limit plate. The bearing is fixedly connected to the limit plate and embedded in one side of the limit plate.

[0011] Among them, the adjustment shaft includes an optical axis and a threaded shaft, the optical axis is fixedly connected to the threaded shaft and is located at one end of the threaded shaft, and the end of the optical axis away from the threaded shaft is embedded in the inner side of the bearing, and the diameter of the optical axis is smaller than the diameter of the threaded shaft.

[0012] Wherein, the single-photon detector fixing device further includes a heat dissipation unit, and the number of the heat dissipation units is multiple groups, and each group of the heat dissipation units is respectively arranged on the outer wall of the first clamping ring.

[0013] Among them, each group of the heat dissipation units includes a heat dissipation frame, adjustable fins and a clamping assembly. The heat dissipation frame is fixedly connected to the first clamping ring and is located on the outer wall of the first clamping ring. The number of the adjustable fins is multiple, and each of the adjustable fins is respectively embedded in the interior of the heat dissipation frame. The number of the clamping assemblies is multiple groups, and each group of the clamping assemblies is respectively fixedly connected to the heat dissipation frame and is respectively located at the upper end of the heat dissipation frame, and each group of the clamping assemblies is respectively located on both sides of the corresponding adjustable fins.

[0014] Among them, the heat dissipation frame includes a frame body and guide columns, the frame body is fixedly connected to the first clamping ring and is located on the outer wall of the first clamping ring, and the frame body has a guide opening. The number of the guide columns is multiple groups, and each group of guide columns is fixedly connected to the frame body and embedded in the guide openings respectively.

[0015] Among them, each group of the clamping components includes a clamping base, a clamping screw and a clamping plate, the clamping base is fixedly connected to the frame and is located at the upper end of the frame, the clamping stud is threadedly connected to the clamping base, and the clamping screw passes through the clamping base, and the clamping plate is fixedly connected to the clamping screw and is located at one end of the clamping screw.

[0016] A single-photon detector fixing device of the present invention places the clamping part of the single-photon detector inside the second clamping ring, and rotates each group of the locking components so that each group of the locking components gathers inward in the second clamping ring until the end of each group of the locking components contacts the outer surface of the single-photon detector, thereby achieving the locking of the single-photon detector, placing the second clamping ring inside the first clamping ring, limiting the second clamping ring by the limit ring, locking the first clamping ring to achieve the fixation of the single-photon detector, and finally installing it on the TEC refrigerator through the heat sink, the rubber ring can avoid the hard contact between the single-photon detector and the second clamping ring, and play a role in protecting the single-photon detector. The above structure can be set to a wide range of sizes through the locking component, and can be applicable to the installation of single-photon detectors or other detectors of various shapes, not only limited to the installation of cylindrical detectors, thereby improving the scope of application and practicality of the fixing equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a schematic structural diagram of the first embodiment of the present invention.

[0019] Figure 2 It is a cross-sectional view of the internal structure of the first embodiment of the present invention.

[0020] Figure 3 The present invention Figure 2 A magnified view of the local structure at A.

[0021] Figure 4 It is a schematic structural diagram of the second embodiment of the present invention.

[0022] Figure 5 The present invention Figure 4 Enlarged view of the local structure at point B.

[0023] Figure 6It is a structural schematic diagram of the frame of the present invention.

[0024] Figure 7 It is a schematic structural diagram of the third embodiment of the present invention.

[0025] Figure 8 The present invention Figure 7 Enlarged view of the local structure at location C.

[0026] 101-heat sink, 102-first clamping ring, 103-second clamping ring, 104-limiting ring, 105-locking assembly, 106-rubber ring, 107-opening, 108-through hole, 109-threaded hole, 110-locking hole, 111-spring, 112-axis column, 113-rubber sleeve, 114-limiting plate, 115-bearing, 116-optical axis, 117-threaded shaft, 201-frame, 202-guide column, 203-adjustable fin, 204-clamping base, 205-clamping screw, 206-clamping plate, 301-cooling fan, 302-mounting buckle, 303-matching buckle, 304-mounting rod. DETAILED DESCRIPTION

[0027] The first embodiment of the present application is:

[0028] See also Figures 1 to 3 ,in Figure 1 is a schematic structural diagram of a first embodiment of the present invention, Figure 2 is a cross-sectional view of the internal structure of the first embodiment of the present invention, Figure 3 The present invention Figure 2 A magnified view of the local structure at A.

[0029] The present invention provides a single-photon detector fixing device: it includes a heat sink 101 and a mounting mechanism, the mounting mechanism includes a first clamping ring 102, a second clamping ring 103, a limit ring 104, a locking assembly 105 and a rubber ring 106, the locking assembly 105 includes a spring 111, a locking shaft and an adjusting shaft, the locking shaft includes a shaft column 112, a rubber sleeve 113, a limit plate 114 and a bearing 115, and the adjusting shaft includes an optical axis 116 and a threaded shaft 117.

[0030] According to this specific embodiment, the single-photon detector is clamped and fixed by the second clamping ring 103 and the locking assembly 105, the first clamping ring 102 is used to mount the second clamping ring 103, and the second clamping ring 103 is limited by the limiting ring 104, and finally installed on the TEC cooler through the heat sink 101.

[0031] The first clamping ring 102 is fixedly connected to the heat sink 101 and is located at the upper end of the heat sink 101. The limiting ring 104 is fixedly connected to the first clamping ring 102 and embedded in the inner side of the first clamping ring 102. The second clamping ring 103 is embedded in the first clamping ring 102. The rubber ring 106 is fixedly connected to the second clamping ring 103 and embedded in one side of the second clamping ring 103. There are multiple groups of locking components 105, which are respectively embedded in the second clamping ring 103. The clamping part of the single-photon detector is placed in the second clamping ring 103, and each group of the locking components is rotated. Part 105, so that each group of the locking components 105 gathers inward in the second clamping ring 103 until the end of each group of the locking components 105 contacts the outer surface of the single-photon detector, so as to achieve the locking of the single-photon detector, the second clamping ring 103 is placed inside the first clamping ring 102, the second clamping ring 103 is limited by the limiting ring 104, the first clamping ring 102 is locked to achieve the fixation of the single-photon detector, and finally it is installed on the TEC cooler through the heat sink 101, the glue ring 106 can avoid the hard contact between the single-photon detector and the second clamping ring 103, so as to protect the single-photon detector.

[0032] Secondly, the first clamping ring 102 has an opening 107, and the two sides of the opening 107 have through holes 108 and threaded holes 109. The setting of the opening 107 facilitates the embedding of the second clamping ring 103 into the interior of the first clamping ring 102, and uses a locking bolt to penetrate the through hole 108 and threadedly connect with the threaded hole 109, so as to achieve the squeezing of the opening 107 and the clamping and fixing of the second clamping ring 103 by the first clamping ring 102.

[0033] Again, the second clamping ring 103 has multiple groups of locking holes 110, and the multiple locking holes 110 are evenly arranged inside the second clamping ring 103, and each group of locking components 105 are respectively embedded in the corresponding locking holes 110. The single-photon detector clamping part is placed inside the second clamping ring 103, and the single-photon detector is locked and fixed by the locking components 105 inside the locking holes 110.

[0034] At the same time, the spring 111 is embedded in the locking hole 110, the locking shaft is embedded in the locking hole 110, and one end of the locking shaft passes through the spring 111 and the locking hole 110, one end of the adjusting shaft is rotatably connected to the locking shaft and is located on one side of the locking shaft, and the other end of the adjusting shaft is threadedly connected to the locking hole 110, and the locking assembly 105 is turned clockwise to move the adjusting shaft and the locking shaft toward the inside of the second clamping ring 103 through the threaded knob, and the locking shaft squeezes the spring 111, and the locking shaft clamps and locks the single-photon detector at the same time. When the adjusting shaft is turned counterclockwise, the adjusting shaft and the locking shaft move to the outside of the second clamping ring 103, and are assisted in resetting by the spring 111, and the spring 111 can effectively prevent loosening.

[0035] In addition, the rubber sleeve 113 is bonded to the shaft column 112 and sleeved on one end of the shaft column 112. The shaft column 112 is fixedly connected to the limit plate 114 and is located on one side of the limit plate 114. The bearing 115 is fixedly connected to the limit plate 114 and is embedded in one side of the limit plate 114. The rubber sleeve 113 contacts the single-photon detector to avoid damage to the outer surface of the single-photon detector caused by hard contact. The rubber sleeve 113 is sleeved on the outer wall of the shaft column 112. The limit plate 114 limits and squeezes the spring 111. At the same time, the bearing 115 is arranged on one side of the limit plate 114. The adjusting shaft is embedded in the bearing 115 and rotates, so that the locking shaft is pushed to move by the rotation of the adjusting shaft until the locking shaft clamps the single-photon detector.

[0036] Furthermore, the optical axis 116 is fixedly connected to the threaded shaft 117 and is located at one end of the threaded shaft 117, and the end of the optical axis 116 away from the threaded shaft 117 is embedded in the inner side of the bearing 115, the diameter of the optical axis 116 is smaller than the diameter of the threaded shaft 117, the threaded shaft 117 is threadedly connected to the locking hole 110, and the optical axis 116 can be rotated by screwing the threaded shaft 117, and the optical axis 116 is convenient to be connected to the bearing 115, so as to push the locking shaft and realize the clamping and locking of the single-photon detector.

[0037] When using a single-photon detector fixing device of the present embodiment, the clamping part of the single-photon detector is placed inside the second clamping ring 103, and each group of the locking components 105 is rotated so that each group of the locking components 105 gathers inward in the second clamping ring 103 until the end of each group of the locking components 105 contacts the outer surface of the single-photon detector, thereby locking the single-photon detector, placing the second clamping ring 103 inside the first clamping ring 102, limiting the second clamping ring 103 by the limiting ring 104, locking the first clamping ring 102 to fix the single-photon detector, and finally through the heat sink 101 When installed on the TEC cooler, the rubber ring 106 can avoid hard contact between the single-photon detector and the second clamping ring 103, thereby protecting the single-photon detector. The setting of the opening 107 facilitates the embedding of the second clamping ring 103 into the interior of the first clamping ring 102, and a locking bolt is used to penetrate the through hole 108 and be threadedly connected to the threaded hole 109, so as to achieve the squeezing of the opening 107, and the clamping and fixing of the second clamping ring 103 by the first clamping ring 102, and the clamping part of the single-photon detector is placed inside the second clamping ring 103, and the single-photon detector is fixed by the locking assembly 105 in the locking hole 110. The locking assembly 105 is locked and fixed, and the adjusting shaft is turned clockwise to move the adjusting shaft and the locking shaft to the inside of the second clamping ring 103 through the threaded knob, and the spring 111 is squeezed by the locking shaft. At the same time, the single-photon detector is clamped and locked by the locking shaft. When the adjusting shaft is turned counterclockwise, the adjusting shaft and the locking shaft move to the outside of the second clamping ring 103 and are assisted in resetting by the spring 111. At the same time, the spring 111 can effectively prevent loosening. The rubber sleeve 113 contacts the single-photon detector to avoid damage to the outer surface of the single-photon detector caused by hard contact. The sleeve 113 is sleeved on the outer wall of the shaft column 112, and the limit plate 114 limits and squeezes the spring 111. At the same time, the bearing 115 is arranged on one side of the limit plate 114, and the adjusting shaft is embedded in the bearing 115 for rotation, so that the locking shaft is pushed to move by the rotation of the adjusting shaft until the locking shaft clamps the single-photon detector. The threaded shaft 117 is threadedly connected to the locking hole 110, and the optical axis 116 can be rotated by screwing the threaded shaft 117. The optical axis 116 is easily connected to the bearing 115, so as to push the locking shaft and clamp and lock the single-photon detector.

[0038] The second embodiment of the present application is:

[0039] Based on the first embodiment, please refer to Figures 4 to 6 ,in Figure 4 is a schematic structural diagram of a second embodiment of the present invention, Figure 5 The present invention Figure 4 The enlarged view of the local structure at B, Figure 6 It is a structural schematic diagram of the frame of the present invention.

[0040] The present invention provides a single-photon detector fixing device: it also includes a heat dissipation unit, the heat dissipation unit includes a heat dissipation frame, an adjustable fin 203 and a clamping assembly, the heat dissipation frame includes a frame body 201 and a guide column 202, and the clamping assembly includes a clamping base 204, a clamping screw 205 and a clamping plate 206.

[0041] According to this specific embodiment, the heat dissipation unit contacts the outer wall of the single-photon detector, and the heat of the outer shell of the single-photon detector is transferred to the adjustable fins 203. The adjustable fins 203 increase the contact area with the air, thereby improving the overall heat dissipation capacity.

[0042] There are multiple groups of heat dissipation units, and each group of heat dissipation units is respectively arranged on the outer wall of the first clamping ring 102. The heat dissipation unit can improve the heat dissipation effect of the single photon detector.

[0043] Secondly, the heat sink is fixedly connected to the first clamping ring 102 and is located on the outer wall of the first clamping ring 102. There are multiple adjustable fins 203, and each adjustable fin 203 is respectively embedded in the interior of the heat sink. There are multiple groups of clamping components, and each group of clamping components is respectively fixedly connected to the heat sink and is respectively located at the upper end of the heat sink, and each group of clamping components is respectively located on both sides of the corresponding adjustable fins 203. The heat sink is installed to the outer wall of the first clamping ring 102, and the heat sink is installed and fixed by the first clamping ring 102, and the adjustable fins 203 are limited and supported by the heat sink, and the adjustable fins 203 are clamped and locked by the clamping components to improve the stability of the adjustable fins 203.

[0044] At the same time, the frame body 201 is fixedly connected to the first clamping ring 102 and is located on the outer wall of the first clamping ring 102, and the frame body 201 has a guide opening, and the number of the guide columns 202 is multiple groups, and each group of the guide columns 202 is respectively fixedly connected to the frame body 201 and respectively embedded in the inside of the guide openings. The frame body 201 is connected to the first clamping ring 102, and the guide columns 202 are embedded in the inside of the frame body 201, and the guide columns 202 limit the adjustable fins 203 to ensure the stable up and down movement of the adjustable fins 203 without angular deviation during the adjustment process.

[0045] In addition, the clamping base 204 is fixedly connected to the frame 201 and is located at the upper end of the frame 201, the clamping stud is threadedly connected to the clamping base 204, and the clamping screw 205 passes through the clamping base 204, the clamping plate 206 is fixedly connected to the clamping screw 205 and is located at one end of the clamping screw 205, the clamping screw 205 passes through the clamping base 204 and is fixedly connected to the clamping plate 206, and the clamping screw 205 is threadedly connected to the clamping base 204, and the clamping screw 205 is turned by the knob so that the two groups of clamping plates 206 clamp and lock the two sides of the adjustable fin 203.

[0046] When using a single-photon detector fixing device of the present embodiment, the heat dissipation effect of the single-photon detector can be improved by the heat dissipation unit, the heat dissipation frame is installed to the outer wall of the first clamping ring 102, the first clamping ring 102 is used to install and fix the heat dissipation frame, and the heat dissipation frame is used to limit and support the adjustable fin 203, and the clamping and locking of the adjustable fin 203 is achieved by the clamping assembly, thereby improving the stability of the adjustable fin 203, the frame body 201 is connected to the first clamping ring 102, The guide column 202 is embedded in the frame 201, and the guide column 202 limits the adjustable fin 203 to ensure the stable up and down movement of the adjustable fin 203 without angular deviation during the adjustment process. The clamping screw 205 passes through the clamping base 204 and is fixedly connected to the clamping plate 206. The clamping screw 205 is threadedly connected to the clamping base 204. By turning the clamping screw 205, the two groups of clamping plates 206 clamp and lock the two sides of the adjustable fin 203.

[0047] The third embodiment of the present application is:

[0048] Based on the second embodiment, please refer to Figure 7 and Figure 8 ,in Figure 7 is a schematic structural diagram of a third embodiment of the present invention, Figure 8 The present invention Figure 7 Enlarged view of the local structure at location C.

[0049] The present invention provides a single-photon detector fixing device, which also includes a heat dissipation mechanism, wherein the heat dissipation mechanism includes a heat dissipation fan 301 , a mounting buckle 302 , a matching buckle 303 and a mounting rod 304 .

[0050] According to this specific implementation, the active heat dissipation of the single photon detector is achieved through the heat dissipation mechanism, while the heat dissipation efficiency of the single photon detector is improved, and the temperature is reduced to ensure the operating stability of the single photon detector.

[0051] Among them, the number of the mating buckles 303 is multiple groups, and each group of the mating buckles 303 is fixedly connected to the corresponding frame 201 and is respectively located at the end of the corresponding frame 201. The number of the mounting buckles 302 is multiple groups, and each group of the mounting buckles 302 is fixedly connected to the heat dissipation fan 301 and is respectively located on one side of the heat dissipation fan 301. The number of the mounting rods 304 is multiple, and each mounting rod 304 passes through the corresponding mating buckle 303 and is threadedly connected with the corresponding mounting buckle 302. The mating buckles 303 and the mounting buckles 302 are connected and installed by the mounting rods 304, so as to realize the installation and fixation of the heat dissipation fan 301. The heat dissipation fan 301 actively dissipates the single-photon detector, and cooperates with the adjustable fins 203 to effectively improve the heat dissipation efficiency.

[0052] When using a single-photon detector fixing device of this embodiment, the mating buckle 303 is installed to the upper end of the corresponding frame 201, and the mounting buckle 302 is installed to one side of the heat dissipation fan 301. The mounting rod 304 penetrates the mating buckle 303 and is threadedly connected to the mounting buckle 302 to achieve installation locking of the heat dissipation fan 301. The heat dissipation fan 301 is started to run and the gaps between the multiple adjustable fins 203 are cooled. The blowing of the heat dissipation fan 301 and the contact area of ​​the adjustable fins 203 can quickly dissipate the heat of the single-photon detector.

[0053] What is disclosed above is only a preferred embodiment of the present invention, and it certainly cannot be used to limit the scope of rights of the present invention. Ordinary technicians in this field can understand that all or part of the processes of the above embodiment and equivalent changes made according to the claims of the present invention still fall within the scope of the invention.

Claims

1. A single photon detector fixing device, comprising a heat sink, characterized in that: Also included is a mounting mechanism; The mounting mechanism includes a first clamping ring, a second clamping ring, a limiting ring, a locking assembly and a rubber ring. The first clamping ring is fixedly connected to the heat sink and is located at the upper end of the heat sink. The limiting ring is fixedly connected to the first clamping ring and embedded in the inner side of the first clamping ring. The second clamping ring is embedded in the interior of the first clamping ring. The rubber ring is fixedly connected to the second clamping ring and embedded in one side of the second clamping ring. There are multiple groups of locking assemblies, and the locking assemblies are respectively embedded in the interior of the second clamping ring.

2. A single photon detector fixing device as claimed in claim 1, characterized in that: The first clamping ring has an opening, and two sides of the opening have through holes and threaded holes.

3. A single-photon detector fixing device as claimed in claim 2, characterized in that: The second clamping ring has a plurality of locking holes, and the plurality of locking holes are evenly arranged inside the second clamping ring, and each group of locking components is respectively embedded inside the corresponding locking hole.

4. A single-photon detector fixing device as claimed in claim 3, characterized in that: Each group of the locking components includes a spring, a locking shaft and an adjusting shaft. The spring is embedded in the locking hole, the locking shaft is embedded in the locking hole, and one end of the locking shaft passes through the spring and the locking hole, one end of the adjusting shaft is rotatably connected to the locking shaft and is located on one side of the locking shaft, and the other end of the adjusting shaft is threadedly connected to the locking hole.

5. A single photon detector fixing device as claimed in claim 4, characterized in that: The locking shaft includes a shaft column, a rubber sleeve, a limit plate and a bearing. The rubber sleeve is bonded to the shaft column and sleeved on one end of the shaft column. The shaft column is fixedly connected to the limit plate and is located on one side of the limit plate. The bearing is fixedly connected to the limit plate and is embedded in one side of the limit plate.

6. A single photon detector fixing device as claimed in claim 5, characterized in that: The adjusting shaft comprises an optical axis and a threaded shaft, wherein the optical axis is fixedly connected to the threaded shaft and is located at one end of the threaded shaft, and the end of the optical axis away from the threaded shaft is embedded in the inner side of the bearing, and the diameter of the optical axis is smaller than the diameter of the threaded shaft.

7. A single-photon detector fixing device as claimed in claim 6, characterized in that: The single-photon detector fixing device further includes a heat dissipation unit, and the heat dissipation units are provided in a plurality of groups, and each group of the heat dissipation units is respectively arranged on the outer wall of the first clamping ring.

8. A single-photon detector fixing device as claimed in claim 7, characterized in that: Each group of the heat dissipation units includes a heat dissipation frame, adjustable fins and a clamping assembly. The heat dissipation frame is fixedly connected to the first clamping ring and is located on the outer wall of the first clamping ring. There are multiple adjustable fins, and each of the adjustable fins is respectively embedded in the interior of the heat dissipation frame. There are multiple groups of clamping assemblies, and each group of the clamping assemblies is respectively fixedly connected to the heat dissipation frame and is respectively located at the upper end of the heat dissipation frame, and each group of the clamping assemblies is respectively located on both sides of the corresponding adjustable fins.

9. A single-photon detector fixing device as claimed in claim 8, characterized in that: The heat dissipation frame includes a frame body and guide columns. The frame body is fixedly connected to the first clamping ring and is located on the outer wall of the first clamping ring. The frame body has a guide opening. The guide columns are in multiple groups. Each group of guide columns is fixedly connected to the frame body and embedded in the guide openings.

10. A single photon detector fixing device as claimed in claim 9, characterized in that: Each group of the clamping components includes a clamping base, a clamping screw and a clamping plate. The clamping base is fixedly connected to the frame and is located at the upper end of the frame. The clamping stud is threadedly connected to the clamping base, and the clamping screw passes through the clamping base. The clamping plate is fixedly connected to the clamping screw and is located at one end of the clamping screw.

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