CN211345921U - Heat radiation structure of photomultiplier detection unit - Google Patents
Heat radiation structure of photomultiplier detection unit Download PDFInfo
- Publication number
- CN211345921U CN211345921U CN201922373158.4U CN201922373158U CN211345921U CN 211345921 U CN211345921 U CN 211345921U CN 201922373158 U CN201922373158 U CN 201922373158U CN 211345921 U CN211345921 U CN 211345921U
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- China
- Prior art keywords
- detection unit
- heat dissipation
- photomultiplier
- semiconductor refrigeration
- refrigeration piece
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- Expired - Fee Related
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- 238000001514 detection method Methods 0.000 title claims abstract description 30
- 230000005855 radiation Effects 0.000 title claims abstract description 10
- 239000004065 semiconductor Substances 0.000 claims abstract description 35
- 230000017525 heat dissipation Effects 0.000 claims abstract description 30
- 238000005057 refrigeration Methods 0.000 claims abstract description 25
- 239000004020 conductor Substances 0.000 claims abstract description 24
- 238000001816 cooling Methods 0.000 claims abstract description 17
- 239000007788 liquid Substances 0.000 claims abstract description 17
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- 230000008859 change Effects 0.000 abstract description 2
- 238000009434 installation Methods 0.000 abstract description 2
- 238000000904 thermoluminescence Methods 0.000 abstract description 2
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000110 cooling liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model discloses a photomultiplier detects heat radiation structure of unit belongs to thermoluminescence measuring equipment technical field. The utility model discloses a semiconductor refrigeration piece, including semiconductor refrigeration piece, photomultiplier detection unit, screw hole, semiconductor refrigeration piece, liquid cooling circulation system, the heat dissipation conductor both sides are provided with the screw hole, and the heat dissipation conductor passes through the screw fixation on photomultiplier detection unit, the front of semiconductor refrigeration piece is hugged closely on the heat dissipation conductor, the back and the liquid cooling circulation system of semiconductor refrigeration piece are connected. The heat radiation structure of the photomultiplier detection unit has the advantages of simple structure, convenience in installation, stable performance and low cost, reduces the experimental error caused by the temperature change of the photomultiplier detection unit, and ensures the accuracy of the experimental result.
Description
Technical Field
The utility model relates to a photomultiplier detects heat radiation structure of unit belongs to thermoluminescence measuring equipment technical field.
Background
At present, similar products at home and abroad generally adopt a mode of a semiconductor refrigeration sheet and a metal radiating block to radiate a photomultiplier tube (PMT) detection unit, the heat conductivity of metal is generally higher, heat can be quickly conducted to a metal radiating sheet, but the heat energy of the metal radiating sheet needs to be radiated by a common small fan; generally, the heat radiating fins are installed inside the pyroelectric reading device, the temperature inside the pyroelectric reading device is high in the working process of the pyroelectric reading device, long time is needed for heat radiation only by a fan, about 1 hour is needed for the temperature required by the normal work of a photomultiplier tube (PMT) detection unit after power-on starting, the starting waiting time is long, and the working efficiency of a pyroelectric reading system is low.
At present, only the company adopts a mode that a semiconductor refrigerating sheet and liquid-adding cooling circulation system is adopted to radiate a photomultiplier tube (PMT) detection unit at home and abroad.
SUMMERY OF THE UTILITY MODEL
To the above problem, the to-be-solved technical problem of the utility model is to provide a photomultiplier detection unit's heat radiation structure.
The utility model discloses a photomultiplier detects heat radiation structure of unit, it contains liquid cooling circulation system, semiconductor refrigeration piece, heat dissipation conductor and photomultiplier detection unit, heat dissipation conductor both sides are provided with the screw hole, and on the heat dissipation conductor passes through the screw fixation in photomultiplier detection unit, the front of semiconductor refrigeration piece is hugged closely on heat dissipation conductor, the back and the liquid cooling circulation system of semiconductor refrigeration piece are connected.
Preferably, the power line of the semiconductor refrigeration piece is connected with the circuit board.
Preferably, the front surface of the semiconductor refrigeration piece is a refrigeration surface, and the back surface of the semiconductor refrigeration piece is a heat dissipation surface.
Preferably, the heat dissipation conductor is made of aluminum.
Preferably, a temperature measuring hole is formed in the heat dissipation conductor, a temperature measuring sensor is mounted on the temperature measuring hole, and the temperature measuring sensor is connected with the control circuit board.
Compared with the prior art, the beneficial effects of the utility model are that: the heat radiation structure of the photomultiplier detection unit has the advantages of simple structure, convenience in installation, stable performance and low cost, reduces the experimental error caused by the temperature change of the photomultiplier detection unit, and ensures the accuracy of the experimental result.
Drawings
Fig. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic structural view of the semiconductor refrigeration sheet of the present invention;
fig. 3 is a schematic structural view of the heat dissipation conductor of the present invention.
Reference numerals: the device comprises a liquid cooling circulation system 1, a semiconductor refrigerating sheet 2, a power line 201, a heat dissipation conductor 3, a temperature measuring hole 301 and a photomultiplier detection unit 4.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
As shown in fig. 1 to fig. 3, the following technical solutions are adopted in the present embodiment: the liquid cooling circulation system comprises a liquid cooling circulation system 1, a semiconductor refrigeration piece 2, a heat dissipation conductor 3 and a photomultiplier detection unit 4, screw holes are formed in two sides of the heat dissipation conductor 3, the heat dissipation conductor 3 is fixed on the photomultiplier detection unit 4 through screws, the front face of the semiconductor refrigeration piece 2 is tightly attached to the heat dissipation conductor 3, and the back face of the semiconductor refrigeration piece 2 is connected with the liquid cooling circulation system 1.
The power cord 201 of the semiconductor refrigeration piece 2 is connected with the circuit board, the high-power CMOS tube on the circuit board provides the required power, after the pyroelectric reader is powered on and started, the semiconductor refrigeration piece 2 is powered on and in a real-time refrigeration state, and when the photomultiplier detection unit 4 reaches the set temperature, the power supply is stopped.
The front surface of the semiconductor refrigerating sheet 2 is a refrigerating surface, and the back surface is a radiating surface.
The heat dissipation conductor 3 is made of aluminum material and has the highest heat conductivity.
The heat dissipation conductor 3 is provided with a temperature measuring hole 301, a temperature measuring sensor is arranged on the temperature measuring hole 301, and the temperature measuring sensor is connected with the control circuit board and transmits the real-time temperature of the photomultiplier detection unit 4 to the display screen.
After the pyroelectric reader is powered on and started, the control circuit board supplies power to the semiconductor refrigerating sheet 2 and the liquid cooling circulating system 1, the semiconductor refrigerating sheet 2 is powered on and then refrigerates in real time, the refrigerating surface of the semiconductor refrigerating sheet 2 is in close contact with the photomultiplier detection unit 4, the photomultiplier detection unit 4 is enabled to be always kept in a set low-temperature state, and the accuracy of an experimental result is ensured.
After the liquid cooling circulation system 1 is electrified, the liquid cooling circulation system is in a state of cooling liquid circulation in real time, and heat generated by the work of the semiconductor refrigerating piece 2 is dissipated at the highest speed through the close contact with the heat dissipation surface of the semiconductor refrigerating piece 2, so that the normal work of the semiconductor refrigerating piece 2 is ensured.
Adopt semiconductor refrigeration and liquid cooling circulation system, because the heat is the direct contact conduction, heat dissipation conductor 3 adopts the aluminum product preparation that the heat conductivity is the highest, photomultiplier detection unit 4's heat can high-efficient conduction to semiconductor refrigeration piece 2, liquid cooling circulation system 1 adopts liquid, heat exchanger and radiator fan triplex, the cooling efficiency of liquid is the highest, generally only need three minutes time with photomultiplier detection unit 4's operating temperature 10 degrees centigrade at room temperature, has improved the radiating efficiency greatly.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. The utility model provides a heat radiation structure of photomultiplier detection unit which characterized in that: it contains liquid cooling circulation system (1), semiconductor refrigeration piece (2), heat dissipation conductor (3) and photomultiplier detection unit (4), heat dissipation conductor (3) both sides are provided with the screw hole, and on heat dissipation conductor (3) passed through the screw fixation in photomultiplier detection unit (4), the front of semiconductor refrigeration piece (2) is hugged closely on heat dissipation conductor (3), the back and the liquid cooling circulation system (1) of semiconductor refrigeration piece (2) are connected.
2. The heat dissipation structure of a photomultiplier tube detection unit according to claim 1, wherein: and a power wire (201) of the semiconductor refrigerating piece (2) is connected with the circuit board.
3. The heat dissipation structure of a photomultiplier tube detection unit according to claim 1, wherein: the front surface of the semiconductor refrigerating sheet (2) is a refrigerating surface, and the back surface of the semiconductor refrigerating sheet is a radiating surface.
4. The heat dissipation structure of a photomultiplier tube detection unit according to claim 1, wherein: the heat dissipation conductor (3) is made of aluminum.
5. The heat dissipation structure of a photomultiplier tube detection unit according to claim 1, wherein: the heat dissipation conductor (3) is provided with a temperature measuring hole (301), a temperature measuring sensor is arranged on the temperature measuring hole (301), and the temperature measuring sensor is connected with the control circuit board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922373158.4U CN211345921U (en) | 2019-12-26 | 2019-12-26 | Heat radiation structure of photomultiplier detection unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922373158.4U CN211345921U (en) | 2019-12-26 | 2019-12-26 | Heat radiation structure of photomultiplier detection unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211345921U true CN211345921U (en) | 2020-08-25 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922373158.4U Expired - Fee Related CN211345921U (en) | 2019-12-26 | 2019-12-26 | Heat radiation structure of photomultiplier detection unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211345921U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114545482A (en) * | 2022-02-22 | 2022-05-27 | 南京永纪光电科技有限公司 | Photomultiplier tube unit and radiation detection device |
-
2019
- 2019-12-26 CN CN201922373158.4U patent/CN211345921U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114545482A (en) * | 2022-02-22 | 2022-05-27 | 南京永纪光电科技有限公司 | Photomultiplier tube unit and radiation detection device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200825 |