CN113194688A - Radiation-proof box body system - Google Patents
Radiation-proof box body system Download PDFInfo
- Publication number
- CN113194688A CN113194688A CN202110497327.4A CN202110497327A CN113194688A CN 113194688 A CN113194688 A CN 113194688A CN 202110497327 A CN202110497327 A CN 202110497327A CN 113194688 A CN113194688 A CN 113194688A
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- box body
- shielding box
- radiation
- gas
- power source
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Classifications
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20009—Modifications to facilitate cooling, ventilating, or heating using a gaseous coolant in electronic enclosures
- H05K7/20136—Forced ventilation, e.g. by fans
- H05K7/20145—Means for directing air flow, e.g. ducts, deflectors, plenum or guides
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B21/00—Machines, plants or systems, using electric or magnetic effects
- F25B21/02—Machines, plants or systems, using electric or magnetic effects using Peltier effect; using Nernst-Ettinghausen effect
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20009—Modifications to facilitate cooling, ventilating, or heating using a gaseous coolant in electronic enclosures
- H05K7/20136—Forced ventilation, e.g. by fans
- H05K7/20172—Fan mounting or fan specifications
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
The invention relates to a radiation-proof box body system, comprising: the shielding box body is used for internally arranging electronic elements, isolating the internal gas from the external atmosphere and shielding rays emitted into the box body in the box body; the power source sucks the gas from the gas outlet of the shielding box body and sends the sucked gas into the shielding box body from the gas inlet of the shielding box body, so that the gas in the shielding box body circularly flows in a closed environment; and the refrigerating assembly is arranged between the shielding box body and the power source and used for cooling the gas sucked out of the shielding box body by the power source. The radiation-proof box body system can effectively cool the gas in the radiation-proof box body under the condition of keeping the gas airtight.
Description
Technical Field
The invention relates to the field of security inspection, in particular to a radiation-proof box body system.
Background
Among existing security devices are, for example, DR detector cassettes in X-ray security machines and CT detector cassettes of CT security devices. The detector box of the security inspection equipment generally has the requirements of radiation protection and tightness of internal gas. In addition, there are temperature requirements in the detector box. On one hand, because the detector is composed of electronic components, certain power consumption is achieved, and a large number of detectors are arranged in the closed box body to cause the temperature in the box body to rise. On the other hand, because the box body has the radiation protection requirement, the box body can be wrapped by using shielding materials such as lead sheets and the like, and the heat exchange between the inside of the detector box body and the outside is seriously influenced. The temperature in the closed detector box rises to a certain degree, which will affect the function and service life of the internal electronic components.
The heat dissipation of the conventional probe case includes a direct heat dissipation method, a heat dissipation method using oil cooling or water cooling, a cooling method using an air conditioner, and the like. The direct heat dissipation method is to add a ventilation fan or a shutter on the box body, as shown in fig. 4, so that the air in the box body directly exchanges heat with the ambient air. The direct heat dissipation mode has the problems that the box body is not closed, and the humidity of the air in the box body is greatly influenced by the humidity of the ambient air and is difficult to control. The heat dissipation method adopting oil cooling or water cooling is to arrange an oil cooling or water cooling pipeline on the inner wall of the detector box body, and as shown in fig. 5, heat dissipation is carried out through an external oil cooling machine. The problem of adopting oil cooling or water cooling's radiating mode lies in: firstly, the heat dissipation pipeline in the detector box body can be broken to pollute electronic elements; secondly, the oil-cooling or water-cooling external radiator and the compressor have large size and high noise. In addition, the cooling mode of the air conditioner is used for reducing the ambient temperature of the box body, and the mode has the problems of high power, large size, high noise and high cost.
Disclosure of Invention
The present invention has been made in view of the above problems, and provides a radiation-proof case system capable of effectively cooling gas while sealing the gas. The present invention addresses at least one of the problems described above.
A first aspect of the invention relates to a radiation-resistant cassette system comprising: the shielding box body is used for internally arranging electronic elements, isolating the internal gas from the external atmosphere and shielding rays emitted into the box body in the box body; the power source sucks the gas from the gas outlet of the shielding box body and sends the sucked gas into the shielding box body from the gas inlet of the shielding box body, so that the gas in the shielding box body circularly flows in a closed environment; and the refrigerating assembly is arranged between the shielding box body and the power source and used for cooling the gas sucked out of the shielding box body by the power source.
According to the radiation protection box body system that the first aspect relates to, refrigeration subassembly's input with the shielding box body the airtight intercommunication of gas outlet, the negative pressure end of power supply with the airtight intercommunication of refrigeration subassembly's output, the malleation end of power supply with the shielding box body the airtight intercommunication of air inlet follows the shielding box body the gas of gas outlet suction via after the refrigeration subassembly cooling, via the power supply is followed the air inlet of shielding box body flows into the shielding box body.
A radiation-resistant cassette system according to any of the preceding aspects, further comprising: a first radiation shielding box covering the air inlet and mounted on the shielding box body, and having a first communication hole communicating with the air inlet of the shielding box body; and the air inlet pipe is used for communicating the first radiation shielding box with the positive pressure end of the power source, the first radiation shielding box is also provided with a second communication hole communicated with the air inlet pipe, and the first communication hole and the second communication hole are arranged on the first radiation shielding box in a staggered mode.
A radiation-resistant cassette system according to any of the preceding aspects, further comprising: a second radiation shielding box mounted on the shielding box body to cover the air outlet and having a third communication hole communicating with the air outlet of the shielding box body; and the air suction pipe is used for communicating the second radiation shielding box with the refrigerating assembly, the second radiation shielding box is also provided with a fourth communication hole communicated with the air suction pipe, and the third communication hole and the fourth communication hole are arranged on the box body of the second radiation shielding box in a staggered mode.
According to the radiation protection box body system related to any one of the aspects, the refrigeration assembly comprises a semiconductor refrigeration assembly and a radiating fin, the semiconductor refrigeration assembly cools the radiating fin, the radiating fin is arranged in a space which is insulated from the external atmosphere, and the gas sucked out by the power source passes through the radiating fin.
According to the radiation protection box body system related to any one of the above aspects, the radiating fin comprises a bottom plate and a fin connected with the bottom plate, and the bottom plate of the semiconductor refrigeration assembly is attached to the bottom plate of the radiating fin.
According to the radiation protection box body system related to any one of the aspects, the first radiation shielding box is connected with the air inlet pipe through a flange.
According to the radiation-proof box body system related to any one of the aspects, the second radiation shielding box is connected with the air suction pipe through a flange.
According to the radiation-proof box body system, the gas in the radiation-proof box body can be effectively cooled under the condition that the gas is kept airtight.
Drawings
FIG. 1 is a schematic structural view of a radiation-proof cassette system;
FIG. 2 is a partial cross-sectional view of a refrigeration assembly;
FIG. 3 is a partial cross-sectional view of a radiation shielded box;
FIG. 4 is a front view of a case of a conventional direct heat dissipation structure of a fan;
fig. 5 is a schematic view of a conventional oil cooling heat dissipation method.
Detailed Description
Features and exemplary embodiments of various aspects of the present invention will be described in detail below, and in order to make objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not to be construed as limiting the invention. It will be apparent to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present invention by illustrating examples of the present invention.
The radiation-proof box body system of the invention comprises: the shielding box body is used for internally arranging electronic elements, isolating the internal gas from the external atmosphere and shielding rays emitted into the box body in the box body; the power source sucks the gas from the gas outlet of the shielding box body and sends the sucked gas into the shielding box body from the gas inlet of the shielding box body, so that the gas in the shielding box body circularly flows in a closed environment; and the refrigerating assembly is arranged between the shielding box body and the power source and used for cooling the gas sucked out of the shielding box body by the power source.
The anti-radiation box body system can realize the circulating cooling of the gas in the closed box body and the controllable humidity, so that the temperature, the humidity and other environments in the closed cavity can meet the working environment requirements of electronic components in the box body.
The present invention will be described in detail below with reference to the accompanying drawings.
Fig. 1 is a schematic configuration diagram of a radiation-proof cassette system as one embodiment of the present invention. The radiation-proof box system 100 of fig. 1 comprises a closed box 1, a refrigeration assembly 3 and a fan 5. The closed box body 1, the refrigerating assembly 3 and the fan 5 form a closed gas circulation loop, so that the internal gas cannot be exchanged with the external air.
The closed box body 1 is of an L-shaped structure. The closed box body 1 has a radiation protection requirement, and has a radiation protection function of preventing radiation incident to the inside from being radiated out. For example, a lead layer or the like may be provided on the outside of the case to prevent radiation from being emitted, and here, a radiation-proof material is not particularly limited as long as it is provided. In addition, the term "sealed" herein does not mean that the case itself is completely closed, but means that the gas inside the case cannot be exchanged with the air in the external atmosphere.
The sealed case 1 contains electronic components such as a detector, and can acquire information from the radiation incident inside. Because the detector is composed of electronic components, the requirements on the temperature and the humidity in the environment are high. It is necessary to operate at a proper temperature and humidity to ensure the accuracy and the service life of the electronic components. Therefore, in order to effectively control the temperature and the humidity in the working environment, the detector is installed in the closed box body, the gas in the box body is isolated from the external atmosphere, and the lower humidity is effectively kept. In addition, through setting up power supply and refrigeration subassembly for gaseous circulation refrigeration in inclosed environment can reduce the temperature in the box body.
Specifically, the fan 5 as a power source provides power for gas flow in a closed environment, and has a negative pressure end and a positive pressure end between which gas can circulate. The closed box 1 has an air outlet and an air inlet (not shown in the figure), which can be disposed at both ends of the closed box 1 in the length direction, as long as the air outlet and the air inlet are disposed at positions favorable for the flow of air in the box, and are not particularly limited. The negative pressure end of the fan 5 can suck out the gas in the closed box body 1 from the gas outlet and refrigerate through the refrigerating assembly 3. The positive pressure end of the fan 5 sends the refrigerated gas back to the closed box body 1 through the air inlet.
As the refrigerating assembly 3, for refrigerating the circulating gas in the closed space. Figure 2 is a partial cross-sectional view of a refrigeration assembly. The refrigeration assembly 3 includes a semiconductor refrigeration assembly 31, a heat sink 32, and a thermal insulating box 33. The heat sink 31 has fins and a base plate connected to the fins, for example, made of aluminum.
The cooling end of the semiconductor cooling module 31 is plate-shaped and attached to the bottom plate of the heat sink 32, and the heat sink 32 is cooled by the heat transfer principle. The fins are placed in a space defined by the bottom plate connected thereto and the box 33 made of a heat insulating material. The space is also sealed from the outside atmosphere. When hot gas from the closed box 1 enters the space, it passes through the cooled fins of the heat sink 32, in which process the hot gas is cooled. The cooled gas is sent back to the closed box 1 by the fan 5. That is, the cooling end of the semiconductor cooling module 31 cools the fin via the bottom plate of the heat sink 32, and the hot gas is cooled in this space. Further, since the space is surrounded by the heat insulating case 33, the temperature of the space is hardly affected by the external temperature, and the gas is efficiently cooled.
The closed box body 1, the semiconductor refrigeration component 3 and the fan 5 can be connected through connecting pipes to be communicated in a closed mode, and a closed gas circulation loop is formed. For example, the input end of the refrigeration component 3 is hermetically communicated with the air outlet of the shielding box body, the negative pressure end of the fan 5 is hermetically communicated with the output end of the refrigeration component 3, and the positive pressure end of the fan 5 is hermetically communicated with the air inlet of the shielding box body 1. The term "hermetically communicated" as used herein means that the internal gas is isolated from the external atmosphere and cannot be exchanged with the external atmosphere, but circulates only in the internal circuit.
Alternatively, referring to fig. 1, a bottom radiation shielding box 7 may be provided at one side of the bottom of the closed box body 1, and mounted on the shielding box body 1 to cover the air inlet. Fig. 3 is a partial cross-sectional view of a bottom radiation shielded box. The bottom radiation shield 7 has a shield lead plate 71, a shield box body 72, a gasket 73, and a flange joint 74. A communication hole through which gas flows is formed in a lower side wall portion of the sealed case 1. The bottom radiation shielding box 7 is also provided with communication holes in its side walls corresponding to the holes in the side walls of the closed box body 1 so that the gas in the bottom radiation shielding box 7 can flow into the closed box body 1.
The wall of the shield case body 72 other than the wall 75 joined to the sealed case body 1 is adhered to the shield case lead plate 71. The wall 75 of the shield case body 72, which is joined to the sealed case body 1, is joined to the sealed case body 1 via the gasket 73. The provision of the gasket 73 effectively isolates the internal gas from the external atmosphere. A threaded hole is provided in the wall 75. The bottom radiation shielding box 7 is connected with the closed box body 1 through screws. Because the screw holes are positioned in the coverage range of the box body shielding lead plate 71, radiation leakage of the screws and the screw holes is effectively shielded.
Further, a communication hole is opened in a wall orthogonal to the wall 75, and is connected to the intake pipe 6 through a flange joint 74. The bottom radiation shield 7 can be easily connected to the inlet manifold 6 by virtue of the flange joint 74. The communication hole of the bottom radiation shielding box 7 with the intake duct 6 may be provided at other positions as long as the position does not oppose the communication hole of the bottom radiation shielding box 7 with the sealed case 1. That is, the position may be set so that the radiation in the sealed case 1 does not enter the communication hole with the inlet pipe 6 through the communication hole with the sealed combination 1.
The bottom radiation shielding box 7 is hermetically communicated with the positive pressure end of the fan 5 through an air inlet pipe 6.
Therefore, according to the above, the bottom radiation shielding case 7 includes the communication hole with the sealed case 1 and the communication hole with the intake duct 6, and a misalignment is generated between both the holes, so that an effective radiation shielding effect can be achieved.
Alternatively, referring to fig. 1, a top radiation shielding box 8 may be disposed on the top of the sealed box body 1, and the top radiation shielding box 8 is installed on the shielding box body 1 to cover the air outlet of the sealed box body 1. An air outlet is arranged at the top of the closed box body 1. The top radiation shielding box 8 is provided with a communication hole corresponding to the air outlet of the closed box body 1 at the bottom of the side wall so that the gas in the closed box body 1 flows into the top radiation shielding box 8. A communication hole is provided in a side wall of the top radiation shielding box 8 orthogonal to the side wall communicating with the air outlet, for communicating with the air suction pipe 2. The top radiation shielding box 8 and the semiconductor refrigeration assembly 3 can be hermetically communicated through the air suction pipe 2. The top radiation shield 8 has the same construction and effect as the bottom radiation shield 7 and will not be described in detail here.
Alternatively, as an embodiment, for example, as shown in fig. 1, the following connection structure is specifically adopted. The negative pressure end of the fan 5 is connected with the air outlet of the closed box body 1 through the connecting pipe 4, the semiconductor refrigerating assembly 3, the air suction pipe 2 and the top radiation shielding box 8. The positive pressure end of the fan 5 is connected with the air inlet of the closed box body 1 through an air inlet pipe 6 and a bottom radiation shielding box 7. The top hot air of airtight box body 1 gets into refrigeration subassembly 3 through top radiation shielding box 8, breathing pipe 2, and the hot air is cooled off in refrigeration subassembly 3, gets into the negative pressure end of fan 5 through connecting pipe 4, passes through intake pipe 6, bottom radiation shielding box 7 by the malleation end of fan 5 and sends into the air inlet of airtight box body 1 to realize the circulative cooling of gaseous in the airtight box body.
In the above embodiments, the fan is used as a power source for circulating air, and as an alternative embodiment, other power sources, such as a vacuum pump, may be used, where the air inlet is communicated with the air outlet.
In addition, the refrigerating device adopted in the embodiment increases the temperature difference of the circulating air for heat dissipation, and effectively improves the heat dissipation capacity. As an alternative embodiment, the refrigeration device is not limited to the semiconductor heat dissipation assembly, and an air-pressure refrigerator or the like may be used. The cooling device may be, for example, a cooling device that performs cooling when a preset condition is satisfied, and for example, a temperature sensor may be provided to perform cooling when the temperature is higher than a predetermined value.
In addition, in the embodiment of the present invention, an L-shaped sealed box is adopted, and as an alternative embodiment, the sealed box is not limited to an L-shaped sealed box, and may have any shape according to design requirements.
In addition, in the embodiment of the present invention, the top radiation shielding box and the bottom radiation shielding box are connected to the sealed box body by screws, and as an alternative embodiment, they may be welded to the sealed box body 1.
In addition, in the embodiment of the present invention, the refrigerating assembly is disposed between the negative pressure end of the power source and the air outlet of the hermetic container, but is not limited thereto. As an alternative embodiment, the refrigeration component can also be arranged between the positive pressure end of the power source and the air inlet of the closed box body.
According to the structure of the invention, the air in the closed box body can not be exchanged with the external environment, and the humidity of the air in the box body can be effectively ensured. In addition, according to the present invention, since the heat exchange medium is air, it is possible to prevent contamination and damage of the electric components due to possible leakage of the oil or water cooling, as compared to the oil or water cooling. In addition, according to the present invention, power is small, size is small, and noise is low, compared to an air conditioner.
Although the embodiments and specific examples of the present invention have been described above with reference to the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations fall within the scope defined by the appended claims.
Claims (8)
1. A radiation-resistant cassette system, comprising:
the shielding box body is used for internally arranging electronic elements, isolating the internal gas from the external atmosphere and shielding rays emitted into the box body in the box body;
the power source sucks the gas from the gas outlet of the shielding box body and sends the sucked gas into the shielding box body from the gas inlet of the shielding box body, so that the gas in the shielding box body circularly flows in a closed environment; and
and the refrigerating assembly is arranged between the shielding box body and the power source and used for cooling the gas sucked out of the shielding box body by the power source.
2. The radiation-resistant cassette system of claim 1,
the input end of the refrigeration component is hermetically communicated with the air outlet of the shielding box body,
the negative pressure end of the power source is hermetically communicated with the output end of the refrigeration assembly,
the positive pressure end of the power source is hermetically communicated with the air inlet of the shielding box body,
and after the gas sucked out from the gas outlet of the shielding box body is cooled by the refrigerating assembly, the gas flows into the shielding box body from the gas inlet of the shielding box body through the power source.
3. The radiation-resistant cassette system of claim 1 or 2,
further comprising:
a first radiation shielding box covering the air inlet and mounted on the shielding box body, and having a first communication hole communicating with the air inlet of the shielding box body; and
an air inlet pipe which communicates the first radiation shielding box with a positive pressure end of the power source,
the first radiation shielding box further has a second communication hole communicating with the intake pipe,
the first communication hole and the second communication hole are arranged on the first radiation shielding box in a staggered manner.
4. The radiation-resistant cassette system of any one of claims 1 to 3,
further comprising:
a second radiation shielding box mounted on the shielding box body to cover the air outlet and having a third communication hole communicating with the air outlet of the shielding box body; and
a suction duct communicating the second radiation shielded box with the refrigeration assembly,
the second radiation shielding box further has a fourth communication hole communicating with the suction duct,
the third communication hole and the fourth communication hole are arranged on the box body of the second radiation shielding box in a staggered mode.
5. The radiation-resistant cassette system of claim 1 or 2,
the refrigeration component comprises a semiconductor refrigeration component and a heat sink, the semiconductor refrigeration component cools the heat sink,
the heat sink is placed in a space insulated from the outside atmosphere,
the gas sucked out by the power source passes through the heat sink.
6. The radiation-resistant cassette system of claim 5,
the heat sink comprises a base plate and a fin connected with the base plate,
and the bottom plate of the semiconductor refrigeration assembly is attached to the bottom plate of the radiating fin.
7. The radiation-resistant cassette system of claim 3,
the first radiation shielding box is connected with the air inlet pipe through a flange.
8. The radiation-resistant cassette system of claim 4,
the second radiation shielding box is connected with the air suction pipe through a flange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110497327.4A CN113194688A (en) | 2021-05-07 | 2021-05-07 | Radiation-proof box body system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110497327.4A CN113194688A (en) | 2021-05-07 | 2021-05-07 | Radiation-proof box body system |
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| CN113194688A true CN113194688A (en) | 2021-07-30 |
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| CN202110497327.4A Pending CN113194688A (en) | 2021-05-07 | 2021-05-07 | Radiation-proof box body system |
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| KR20180000085A (en) * | 2016-06-22 | 2018-01-02 | 주식회사 엠아이서진 | Cooling system for shield box and the shield box |
| JP2018033483A (en) * | 2016-08-29 | 2018-03-08 | 清水建設株式会社 | Radiation shielding structure |
| JP2018179851A (en) * | 2017-04-18 | 2018-11-15 | 清水建設株式会社 | Radiation shielding structure |
| CN207604139U (en) * | 2017-11-30 | 2018-07-10 | 东莞信太精密电子有限公司 | A radio frequency shielding device inside a mobile phone |
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| CN209435687U (en) * | 2018-09-25 | 2019-09-24 | 江苏伦肯智能科技有限公司 | A kind of filter |
| CN210202302U (en) * | 2019-01-21 | 2020-03-27 | 上海云飏建设发展有限公司 | Magnetic adsorption type temperature and humidity detection device for server cabinet |
| KR20210013808A (en) * | 2019-07-29 | 2021-02-08 | 정도규 | Evaporator for heat pipe system and method for manufacturing the same |
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