CN116507076B - Detector CT guide rail structure and CT scanning equipment - Google Patents
Detector CT guide rail structure and CT scanning equipment Download PDFInfo
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- CN116507076B CN116507076B CN202211527883.2A CN202211527883A CN116507076B CN 116507076 B CN116507076 B CN 116507076B CN 202211527883 A CN202211527883 A CN 202211527883A CN 116507076 B CN116507076 B CN 116507076B
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- 238000002591 computed tomography Methods 0.000 title claims abstract description 8
- 238000009423 ventilation Methods 0.000 claims abstract description 77
- 238000001816 cooling Methods 0.000 claims abstract description 41
- 230000005540 biological transmission Effects 0.000 claims description 12
- 230000007246 mechanism Effects 0.000 claims description 10
- 239000004065 semiconductor Substances 0.000 claims description 9
- 238000012544 monitoring process Methods 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 5
- 238000012423 maintenance Methods 0.000 abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 29
- 230000017525 heat dissipation Effects 0.000 description 7
- 230000009471 action Effects 0.000 description 4
- 239000000110 cooling liquid Substances 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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
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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
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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
Abstract
The application discloses detector CT guide rail structure and CT scanning equipment, this detector CT guide rail structure includes: the detector comprises a guide rail, a detector module and an air cooling system, wherein the detector module and the air cooling system are arranged on the guide rail; the air cooling system comprises a guide rail air inlet pipe, a guide rail air outlet pipe, an air deflector, an air inlet fan and an air outlet fan; the guide rail air inlet pipe and the guide rail air outlet pipe are respectively positioned at two sides of the detector module, and are provided with ventilation windows which correspond to the detector module; the air deflector is arranged on the ventilation window, the air inlet fan is connected with the guide rail air inlet pipe, and the air outlet fan is connected with the guide rail air outlet pipe. The cooling system of the detector in the related art has the advantages that the mechanical structure requirement on the detector is high, the heat conduction efficiency is difficult to guarantee, the temperature control mode of the cooling system is complex, and the use and maintenance cost is high.
Description
Technical Field
The application relates to the technical field of CT equipment, in particular to a detector CT guide rail structure and CT scanning equipment.
Background
In known CT structures, a detector rail is used to fix a plurality of detector modules. The single detector module consists of a data acquisition chip, a scintillator, a data transmission cable, a circuit board and a module support frame. The multi-row detector adopts a water cooling system to control the temperature of the detector module, and the water cooling system comprises: the water pipe, the water pump, the pressure regulating valve, the temperature sensor for measuring the water inlet pipe and the water outlet pipe, the fan and the heating resistor which are inlaid on the guide rail.
However, the use of a water cooling system has the following drawbacks:
the multi-row detector module has compact space structure, more detector chips and large heat productivity, and the mechanical structure requirement of the detector is high by adopting water cooling to conduct heat conduction, so that the heat conduction efficiency is difficult to ensure;
the temperature control mode of the water cooling system is complex and is influenced by a water pipe layout mode, the flow rate of cooling liquid of a water inlet pipe and a water outlet pipe, the rotating speed of a fan, the heating duty ratio and other factors;
the cooling liquid of the water cooling system needs to be replenished regularly, and some electrical components such as a water pipe, a fan, a water pump and the like in the water cooling system and connecting structural members need to be maintained regularly, so that the maintenance cost is high;
the water cooling system relates to more parts, and is complex in structure and high in cost.
Disclosure of Invention
The main aim of the application is to provide a detector CT guide rail structure and CT scanning equipment to solve the cooling system of detector among the correlation technique and to the mechanical structure requirement of detector high, the heat conduction efficiency is difficult to guarantee, cooling system temperature control mode is complicated, problem that use and maintenance cost are high.
To achieve the above object, the present application provides a detector CT rail structure, including: the detector comprises a guide rail, a detector module and an air cooling system, wherein the detector module and the air cooling system are arranged on the guide rail; wherein,
the air cooling system comprises a guide rail air inlet pipe, a guide rail air outlet pipe, an air deflector, an air inlet fan and an air outlet fan;
the guide rail air inlet pipe and the guide rail air outlet pipe are respectively positioned at two sides of the detector module, and are provided with ventilation windows which correspond to the detector module;
the air deflector is arranged on the ventilation window, the air inlet fan is connected with the guide rail air inlet pipe, and the air outlet fan is connected with the guide rail air outlet pipe.
Further, the detector modules are arranged in a plurality and distributed along the length direction of the guide rail;
the ventilation windows are arranged in a plurality of groups, each group comprises two groups and is respectively arranged on the guide rail air inlet pipe and the guide rail air outlet pipe, and each group of ventilation windows corresponds to one or more detector modules.
Further, a steering mechanism is arranged in the ventilation window and is in transmission connection with the air deflector and used for controlling the rotation angle of the air deflector.
Further, the air deflector is hinged with the ventilation window through a rotating shaft, the rotating shaft is perpendicular to the distribution direction of the detector module, and the steering mechanism is in transmission connection with the rotating shaft.
Further, two ends of the guide rail air inlet pipe are provided with openings, and the two air inlet fans are respectively positioned at the openings at the two ends of the guide rail air inlet pipe;
the two ends of the guide rail air outlet pipe are provided with openings, and the two air outlet fans are respectively positioned at the openings at the two ends of the guide rail air outlet pipe.
Further, the detector module comprises a module support frame, a data acquisition chip, a semiconductor refrigerating sheet, a scintillator, a data transmission cable and a circuit board, wherein the data acquisition chip, the semiconductor refrigerating sheet, the scintillator, the data transmission cable and the circuit board are arranged on the module support frame, and the ventilation window corresponds to the data acquisition chip and the semiconductor refrigerating sheet; and two ends of the module support frame are fixedly connected to the guide rail in a lap joint manner.
Further, the angle of the air deflector in each ventilation windowThe method is determined according to the following formula:
；
；
；
；/>；
wherein k is the kth ventilation window from the air outlet fan or the air inlet fan,for the distance between adjacent ventilation windows located on the same side of the guide rail, < >>For the area of the ventilation window->Is the distance between two inner side walls of the guide rail->For the height of the ventilation window +.>V is the wind speed of the guide rail in the wind pipeline and is the length of the wind deflector>Is the coefficient of friction of the duct, L is the ventilation path, d is the duct diameter, < >>Air density, V is ventilation.
Further, the power P of the air outlet fan and the air inlet fan is determined according to the following formula:
；
where n is the number of ventilation windows,the working efficiency of the air outlet fan and the air inlet fan is the same.
Further, the steering control device also comprises a steering control module and a temperature monitoring module, wherein the steering control module is electrically connected with the steering mechanism;
the temperature monitoring module is used for monitoring the temperature of the detector module, and is electrically connected with the steering control module.
According to another aspect of the present application, there is provided a CT scanning apparatus including the detector CT rail structure described above.
In the embodiment of the application, the guide rail, the detector module arranged on the guide rail and the air cooling system are arranged; the air cooling system comprises a guide rail air inlet pipe, a guide rail air outlet pipe, an air deflector, an air inlet fan and an air outlet fan; the guide rail air inlet pipe and the guide rail air outlet pipe are respectively positioned at two sides of the detector module, and are provided with ventilation windows which correspond to the detector module; the air deflector is arranged on the ventilation window, the air inlet fan is connected with the guide rail air inlet pipe, the air outlet fan is connected with the guide rail air outlet pipe, the effect that the air inlet fan introduces external cold air into the guide rail air inlet pipe, the external cold air is discharged from the ventilation window on the guide rail air inlet pipe, the external cold air takes away the heat of the detector module after passing through the detector module and enters the guide rail air outlet pipe through the window on the guide rail air outlet pipe, and then the internal hot air in the guide rail air outlet pipe is discharged under the action of the air outlet fan to form a circulating air cooling system is achieved, so that the detector module is cooled in an air cooling mode.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, are included to provide a further understanding of the application and to provide a further understanding of the application with regard to the other features, objects and advantages of the application. The drawings of the illustrative embodiments of the present application and their descriptions are for the purpose of illustrating the present application and are not to be construed as unduly limiting the present application. In the drawings:
FIG. 1 is a schematic diagram of a structure according to an embodiment of the present application;
FIG. 2 is a schematic top view of an embodiment of the present application;
the device comprises a guide rail 1, a guide rail air inlet pipe 2, a guide rail air outlet pipe 2, a detector module 4, a data acquisition chip 41, a semiconductor refrigerating sheet 42, a module support frame 43, a ventilation window 5, an air deflector 6, an air inlet fan 7 and an air outlet fan 8.
Detailed Description
In order to make the present application solution better understood by those skilled in the art, the following description will be made in detail and with reference to the accompanying drawings in the embodiments of the present application, it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, shall fall within the scope of the present application.
It should be noted that the terms "first," "second," and the like in the description and claims of the present application and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate in order to describe the embodiments of the present application described herein.
In the present application, the terms "upper", "lower", "inner", and the like indicate an azimuth or a positional relationship based on the azimuth or the positional relationship shown in the drawings. These terms are used primarily to better describe the present application and its embodiments and are not intended to limit the indicated device, element or component to a particular orientation or to be constructed and operated in a particular orientation.
Also, some of the terms described above may be used to indicate other meanings in addition to orientation or positional relationships, for example, the term "upper" may also be used to indicate some sort of attachment or connection in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.
Furthermore, the terms "disposed," "configured," "connected," "secured," and the like are to be construed broadly. For example, "connected" may be in a fixed connection, a removable connection, or a unitary construction; may be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements, or components. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.
In addition, the term "plurality" shall mean two as well as more than two.
It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. The present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
At present, a water cooling system is adopted for the multi-row detector to control the temperature of the detector module, however, the water cooling system has the following defects: the multi-row detector module has compact space structure, more detector chips and large heat productivity, and the mechanical structure requirement of the detector is high by adopting water cooling to conduct heat conduction, so that the heat conduction efficiency is difficult to ensure; the temperature control mode of the water cooling system is complex and is influenced by a water pipe layout mode, the flow rate of cooling liquid of a water inlet pipe and a water outlet pipe, the rotating speed of a fan, the heating duty ratio and other factors; the cooling liquid of the water cooling system needs to be replenished regularly, and some electrical components such as a water pipe, a fan, a water pump and the like in the water cooling system and connecting structural members need to be maintained regularly, so that the maintenance cost is high; the water cooling system relates to more parts, and is complex in structure and high in cost.
To solve the above-mentioned problems, as shown in fig. 1 to 2, an embodiment of the present application provides a detector CT guide rail 1 structure, where the detector CT guide rail 1 structure includes: the device comprises a guide rail 1, a detector module 4 arranged on the guide rail 1 and an air cooling system; wherein,
the air cooling system comprises a guide rail air inlet pipe 2, a guide rail air outlet pipe 2, an air deflector 6, an air inlet fan 7 and an air outlet fan 8;
the guide rail air inlet pipe 2 and the guide rail air outlet pipe 2 are respectively positioned at two sides of the detector module 4, the guide rail air inlet pipe 2 and the guide rail air outlet pipe 2 are provided with ventilation windows 5, and the ventilation windows 5 correspond to the detector module 4;
the air deflector 6 is arranged at the ventilation window 5, the air inlet fan 7 is connected with the guide rail air inlet pipe 2, and the air outlet fan 8 is connected with the guide rail air outlet pipe 2.
The detector module 4 comprises a module support frame 43, a data acquisition chip 41, a semiconductor refrigeration piece 42, a scintillator, a data transmission cable and a circuit board which are arranged on the module support frame 43, and the ventilation window 5 corresponds to the data acquisition chip 41 and the semiconductor refrigeration piece 42; the two ends of the module support frame 43 are fixedly connected to the guide rail 1 in a lap joint manner.
In this embodiment, the structure of the guide rail 1 with air cooling mainly comprises three parts, namely the guide rail 1, the detector module 4 and an air cooling system. The guide rail 1 and the detector module 4 are of a CT structure in the related art, the middle part of the guide rail 1 is provided with a mounting cavity, and the detector module 4 is mounted in the mounting cavity. A plurality of detector modules 4 may be mounted on one rail 1, and the plurality of detector modules 4 may be distributed along the length direction of the rail 1. The air cooling system consists of a guide rail air inlet pipe 2, a guide rail air outlet pipe 2, an air deflector 6, an air inlet fan 7 and an air outlet fan 8. The guide rail air inlet pipe 2 and the guide rail air outlet pipe 2 are respectively responsible for air inlet and air outlet, and the air cooling system has a heat dissipation mode that external cold air is introduced and discharged after heat exchange of the detector module 4. Therefore, in this embodiment, the guide rail air inlet pipe 2 and the guide rail air outlet pipe 2 are respectively used as air inlet and outlet channels and are installed on two sides of the detector module 4. Because the detector module 4 is an integrated structure of a plurality of electronic components, the guide rail air inlet pipe 2 and the guide rail air outlet pipe 2 are fixedly installed at two inner sides of the guide rail 1 in the embodiment, so that interference to the body structure of the detector module 4 is avoided.
In order to cool the detector module 4 in a targeted manner, ventilation windows 5 are formed in the guide rail air inlet pipe 2 and the guide rail air outlet pipe 2, and the ventilation windows 5 are formed in positions corresponding to elements with larger heating values on the detector module, such as data chips on the detector module 4. The ventilation windows 5 on the guide rail air inlet pipe 2 and the guide rail air outlet pipe 2 are symmetrically distributed, so that the heat dissipation efficiency of the detector module 4 is improved. The guide rail air inlet pipe 2 and the guide rail air outlet pipe 2 are respectively provided with an air inlet fan 7 and an air outlet fan 8, external cold air can be sucked into the guide rail air inlet pipe 2 under the action of the air inlet fan 7, and internal hot air in the guide rail air outlet pipe 2 can be better discharged under the action of the air outlet fan 8.
Because a plurality of detector modules 4 can be installed on the guide rail 1, a plurality of ventilation windows 5 can be formed on the corresponding guide rail air inlet pipe 2 and guide rail air outlet pipe 2, and because the installation positions of the air outlet fan 8 and the air inlet fan 7 are fixed, the wind speed and the ventilation quantity of the ventilation windows 5 at different positions are different in work, and the wind speed and the ventilation quantity of the ventilation windows 5 close to the fan position can be larger than those of the ventilation windows 5 far away from the fan position, so that the air inlet and the air outlet of each ventilation window 5 can meet the heat dissipation of the corresponding detector module 4, in this embodiment, the air deflector 6 is installed in each ventilation window 5, and the air deflector 6 can form a certain angle with the vertical surface of the ventilation window 5. The inclination angles of the air deflectors 6 in the ventilation windows 5 on the guide rail air inlet pipe 2 have certain differences, and the inclination angles of the air deflectors 6 in the ventilation windows 5 on the guide rail air outlet pipe 2 are also different to a certain extent, so that the heat dissipation requirements of the detector modules 4 at different positions are met. The installation angle of the air deflector 6 in each ventilation window 5 can be designed based on the position of the ventilation window 5, the wind speed, the wind quantity, the distance between the guide rails 1, and the like.
According to the embodiment, the purposes that the air inlet fan 7 introduces external cold air into the guide rail air inlet pipe 2, the external cold air is discharged through the ventilation window 5 on the guide rail air inlet pipe 2, the external cold air takes away the heat of the detector module 4 after passing through the detector module 4 and enters the guide rail air outlet pipe 2 through the window on the guide rail air outlet pipe 2, and then internal hot air in the guide rail air outlet pipe 2 is discharged under the action of the air outlet fan 8 to form a circulating air cooling system are achieved, so that the detector module 4 is cooled in an air cooling mode.
As shown in fig. 2, the detector modules 4 are provided in plurality and distributed along the length direction of the guide rail 1; the ventilation windows 5 are arranged in a plurality of groups, each group comprises two groups and is respectively arranged on the guide rail air inlet pipe 2 and the guide rail air outlet pipe 2, each group of ventilation windows 5 corresponds to one or more detector modules 4, and each group of ventilation windows 5 corresponds to one detector module 4 for improving efficiency and saving cost.
In order to facilitate the adjustment of the air deflectors 6 in each ventilation window 5, a steering mechanism is arranged in each ventilation window 5 and is in transmission connection with the air deflectors 6 for controlling the rotation angle of the air deflectors 6. Specifically, the air deflector 6 is hinged with the ventilation window 5 through a rotating shaft, the rotating shaft is perpendicular to the distribution direction of the detector module 4, and the steering mechanism is in transmission connection with the rotating shaft.
Because the guide rail 1 has a certain length, in order to enable the detector modules 4 arranged at all positions of the guide rail 1 to effectively dissipate heat, in the embodiment, two ends of the guide rail air inlet pipe 2 are provided with openings, and the air inlet fans 7 are provided with two openings respectively positioned at the two ends of the guide rail air inlet pipe 2; the air inlet fans 7 at the two ends can suck external cold air at the two ends of the guide rail 1 into the guide rail air inlet pipe 2 when rotating, so that the detector modules 4 at the two ends and the middle part of the guide rail 1 can be well cooled;
similarly, in order to facilitate the discharge of hot air in the guide rail air outlet pipe 2, in this embodiment, openings are formed at two ends of the guide rail air outlet pipe 2, and two air outlet fans 8 are disposed and located at the openings at two ends of the guide rail air outlet pipe 2 respectively. In the heat dissipation structure of this embodiment, the ventilation path includes at least two, wherein one of the ventilation paths is that the external cold air at the left end of the guide rail 1 is sucked through the air inlet fan 7 at the left end, flows into the guide rail air outlet pipe 2 after passing through the ventilation window 5 at the left end, and is discharged through the air outlet fan 8 at the left end of the guide rail air outlet pipe 2. The other is that the external cold air at the right end of the guide rail 1 is sucked in through the air inlet fan 7 at the right end, flows into the guide rail air outlet pipe 2 after passing through the ventilation window 5 at the right end, and is discharged through the air outlet fan 8 at the right end of the guide rail air outlet pipe 2.
Because the inclination angles of the air deflectors 6 in the ventilation windows 5 at different positions are different, in order to enable the detector module 4 at each position to achieve a good heat dissipation effect, the inclination angle of each air deflector 6 needs to be designed. Specifically, in the present embodiment, the angle of the air deflector 6 in each ventilation window 5The method is determined according to the following formula:
；
；
；
；/>；
where k is the kth ventilation window 5 from the air outlet fan 8 or the air inlet fan,for the distance between adjacent ventilation windows 5 located on the same side of the guide rail 1 +.>For the area of the ventilation window 5 +.>Is the distance between the two inner side walls of the guide rail 1 +.>For the height of the ventilation window 5, L is the length of the air deflector 6, V is the wind speed of the guide rail entering the air duct 2, λ is the friction coefficient of the duct, L is the ventilation path (i.e. the flow path of external cold air, the opening of the guide rail entering the air duct closest to the detector module-the ventilation window-the opening of the guide rail exiting the air duct closest to the detector module), d is the diameter of the duct, ρ is the air density, and V is the ventilation quantity.
The power of the air outlet fan 8 and the power of the air inlet fan need to meet the use requirement of the air cooling system, and in this embodiment, the power P of the air outlet fan 8 and the power P of the air inlet fan are determined according to the following formula:
；
where n is the number of ventilation windows 5 and η is the working efficiency of the air outlet fan 8 and the air inlet fan.
The temperature of the detector module 4 can change in the use process, so that the required air quantity also changes along with the change of the temperature from the aspects of heat dissipation efficiency and energy saving, and the embodiment also comprises a steering control module and a temperature monitoring module, wherein the steering control module is electrically connected with a steering mechanism, and the steering mechanism can be set as a steering engine or a servo motor; the temperature monitoring module is used for monitoring the temperature of the detector module 4, and is electrically connected with the steering control module.
According to another aspect of the present application, a CT scanning apparatus is provided, which includes the detector CT rail 1 structure described above.
The foregoing description is only of the preferred embodiments of the present application and is not intended to limit the same, but rather, various modifications and variations may be made by those skilled in the art. Any modifications, equivalent substitutions, improvements, or the like, which are within the spirit and principles of the present application, are intended to be included within the scope of the present application.
Claims (8)
1. A detector CT guide rail structure comprising: the detector comprises a guide rail, a detector module and an air cooling system, wherein the detector module and the air cooling system are arranged on the guide rail; wherein,
the air cooling system comprises a guide rail air inlet pipe, a guide rail air outlet pipe, an air deflector, an air inlet fan and an air outlet fan;
the guide rail air inlet pipe and the guide rail air outlet pipe are respectively positioned at two sides of the detector module, and are provided with ventilation windows which correspond to the detector module;
the air deflector is arranged on the ventilation window, the air inlet fan is connected with the guide rail air inlet pipe, and the air outlet fan is connected with the guide rail air outlet pipe;
a steering mechanism is arranged in the ventilation window and is in transmission connection with the air deflector and used for controlling the rotation angle of the air deflector;
the angle theta of the air deflector in each ventilation window k The method is determined according to the following formula:
F c ＝d c +d s /d t ；
P f ＝Δp*L；Δp＝(λ/d)*(ν 2 *ρ*L/2)；
wherein k is the kth ventilation window from the air outlet fan or the air inlet fan, d c D is the distance between adjacent ventilation windows positioned on the same side of the guide rail s For the area of the ventilation window d t Is the distance between two inner side walls of the guide rail, d h The height of the ventilation window is L, the length of the air deflector, V the wind speed of the guide rail in the wind inlet pipeline, lambda the friction coefficient of the pipeline, L the ventilation path, d the diameter of the pipeline, rho the air density and V the ventilation quantity.
2. The detector CT rail structure of claim 1 wherein: the detector modules are arranged in a plurality and distributed along the length direction of the guide rail;
the ventilation windows are arranged in a plurality of groups, each group comprises two groups and is respectively arranged on the guide rail air inlet pipe and the guide rail air outlet pipe, and each group of ventilation windows corresponds to one or more detector modules.
3. The detector CT rail structure of claim 2 wherein: the air deflector is hinged with the ventilation window through a rotating shaft, the rotating shaft is perpendicular to the distribution direction of the detector module, and the steering mechanism is in transmission connection with the rotating shaft.
4. A detector CT guide rail structure according to any one of claims 1 to 3, wherein: the two ends of the guide rail air inlet pipe are provided with openings, and the two air inlet fans are respectively positioned at the openings at the two ends of the guide rail air inlet pipe;
the two ends of the guide rail air outlet pipe are provided with openings, and the two air outlet fans are respectively positioned at the openings at the two ends of the guide rail air outlet pipe.
5. The detector CT rail structure of claim 4 wherein: the detector module comprises a module support frame, a data acquisition chip, a semiconductor refrigerating sheet, a scintillator, a data transmission cable and a circuit board, wherein the data acquisition chip, the semiconductor refrigerating sheet, the scintillator, the data transmission cable and the circuit board are arranged on the module support frame, and the ventilation window corresponds to the data acquisition chip and the semiconductor refrigerating sheet; and two ends of the module support frame are fixedly connected to the guide rail in a lap joint manner.
6. The detector CT rail structure of claim 1 wherein: the power P of the air outlet fan and the air inlet fan is determined according to the following formula:
P＝n*V*ρ/(3600*η*1000*β)；
wherein n is the number of ventilation windows, and eta is the working efficiency of the air outlet fan and the air inlet fan.
7. A detector CT guide rail structure according to claim 2 or 3, characterized in that: the steering control module is electrically connected with the steering mechanism;
the temperature monitoring module is used for monitoring the temperature of the detector module, and is electrically connected with the steering control module.
8. A CT scanning apparatus comprising a detector CT rail structure as claimed in any one of claims 1 to 7.
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| CN202211527883.2A CN116507076B (en) | 2022-11-29 | 2022-11-29 | Detector CT guide rail structure and CT scanning equipment |
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| CN202211527883.2A CN116507076B (en) | 2022-11-29 | 2022-11-29 | Detector CT guide rail structure and CT scanning equipment |
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| CN117017332B (en) * | 2023-10-09 | 2023-12-26 | 赛诺威盛科技(北京)股份有限公司 | Detector module and medical imaging equipment |
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